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imgui/imgui_tables.cpp

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// dear imgui, v1.80 WIP
// (tables and columns code)
/*
Index of this file:
// [SECTION] Tables: Main code
// [SECTION] Tables: Row changes
// [SECTION] Tables: Columns changes
// [SECTION] Tables: Columns width management
// [SECTION] Tables: Drawing
// [SECTION] Tables: Sorting
// [SECTION] Tables: Headers
// [SECTION] Tables: Context Menu
// [SECTION] Tables: Settings (.ini data)
// [SECTION] Tables: Garbage Collection
// [SECTION] Tables: Debugging
// [SECTION] Columns, BeginColumns, EndColumns, etc.
*/
// Navigating this file:
// - In Visual Studio IDE: CTRL+comma ("Edit.NavigateTo") can follow symbols in comments, whereas CTRL+F12 ("Edit.GoToImplementation") cannot.
// - With Visual Assist installed: ALT+G ("VAssistX.GoToImplementation") can also follow symbols in comments.
//-----------------------------------------------------------------------------
// Typical tables call flow: (root level is generally public API):
//-----------------------------------------------------------------------------
// - BeginTable() user begin into a table
// | BeginChild() - (if ScrollX/ScrollY is set)
// | TableBeginInitMemory() - first time table is used
// | TableResetSettings() - on settings reset
// | TableLoadSettings() - on settings load
// | TableBeginApplyRequests() - apply queued resizing/reordering/hiding requests
// | - TableSetColumnWidth() - apply resizing width (for mouse resize, often requested by previous frame)
// | - TableUpdateColumnsWeightFromWidth()- recompute columns weights (of stretch columns) from their respective width
// - TableSetupColumn() user submit columns details (optional)
// - TableSetupScrollFreeze() user submit scroll freeze information (optional)
//-----------------------------------------------------------------------------
// - TableUpdateLayout() [Internal] followup to BeginTable(): setup everything: widths, columns positions, clipping rectangles. Automatically called by the FIRST call to TableNextRow() or TableHeadersRow().
// | TableSetupDrawChannels() - setup ImDrawList channels
// | TableUpdateBorders() - detect hovering columns for resize, ahead of contents submission
// | TableDrawContextMenu() - draw right-click context menu
//-----------------------------------------------------------------------------
// - TableHeadersRow() or TableHeader() user submit a headers row (optional)
// | TableSortSpecsClickColumn() - when left-clicked: alter sort order and sort direction
// | TableOpenContextMenu() - when right-clicked: trigger opening of the default context menu
// - TableGetSortSpecs() user queries updated sort specs (optional, generally after submitting headers)
// - TableNextRow() user begin into a new row (also automatically called by TableHeadersRow())
// | TableEndRow() - finish existing row
// | TableBeginRow() - add a new row
// - TableSetColumnIndex() / TableNextColumn() user begin into a cell
// | TableEndCell() - close existing column/cell
// | TableBeginCell() - enter into current column/cell
// - [...] user emit contents
//-----------------------------------------------------------------------------
// - EndTable() user ends the table
// | TableDrawBorders() - draw outer borders, inner vertical borders
// | TableMergeDrawChannels() - merge draw channels if clipping isn't required
// | EndChild() - (if ScrollX/ScrollY is set)
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// TABLE SIZING
//-----------------------------------------------------------------------------
// (Read carefully because this is subtle but it does make sense!)
//-----------------------------------------------------------------------------
// About 'outer_size':
// Its meaning needs to differ slightly depending of if we are using ScrollX/ScrollY flags.
// Default value is ImVec2(-FLT_MIN, 0.0f). When binding this in a scripting language please follow this default value.
// X
// - outer_size.x < 0.0f -> Right-align from window/work-rect right-most edge. With -FLT_MIN will right-align exactly on right-most edge. With -1.0f will right-align one pixel away from right-most edge.
// - outer_size.x = 0.0f -> Auto width. Generally use all available width. When NOT using scrolling and NOT using any Stretch column, use only necessary width, otherwise same as -FLT_MIN.
// - outer_size.x > 0.0f -> Fixed width.
// Y with ScrollX/ScrollY disabled: we output table directly in current window
// - outer_size.y < 0.0f -> Bottom-align (but will auto extend, unless NoHostExtendV is set)
// - outer_size.y = 0.0f -> No minimum height (but will auto extend, unless NoHostExtendV is set)
// - outer_size.y > 0.0f -> Set Minimum height (but will auto extend, unless NoHostExtendV is set)
// Y with ScrollX/ScrollY enabled: using a child window for scrolling
// - outer_size.y < 0.0f -> Bottom-align
// - outer_size.y = 0.0f -> Bottom-align, consistent with BeginChild(). Not recommended unless table is last item in parent window.
// - outer_size.y > 0.0f -> Set Exact height. Recommended when using Scrolling on any axis.
//-----------------------------------------------------------------------------
// About 'inner_width':
// With ScrollX disabled:
// - inner_width -> *ignored*
// With ScrollX enable:
// - inner_width < 0.0f -> *illegal* fit in known width (right align from outer_size.x) <-- weird
// - inner_width = 0.0f -> fit in outer_width: Fixed size columns will take space they need (if avail, otherwise shrink down), Stretch columns becomes Fixed columns.
// - inner_width > 0.0f -> override scrolling width, generally to be larger than outer_size.x. Fixed column take space they need (if avail, otherwise shrink down), Stretch columns share remaining space!
//-----------------------------------------------------------------------------
// Details:
// - If you want to use Stretch columns with ScrollX, you generally need to specify 'inner_width' otherwise the concept
// of "available space" doesn't make sense.
// - Even if not really useful, we allow 'inner_width < outer_size.x' for consistency and to facilitate understanding
// of what the value does.
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// TABLES CULLING
//-----------------------------------------------------------------------------
// About clipping/culling of Rows in Tables:
// - For large numbers of rows, it is recommended you use ImGuiListClipper to only submit visible rows.
// ImGuiListClipper is reliant on the fact that rows are of equal height.
// See 'Demo->Tables->Vertical Scrolling' or 'Demo->Tables->Advanced' for a demo of using the clipper.
//-----------------------------------------------------------------------------
// About clipping/culling of Columns in Tables:
// - Case A: column is not hidden by user, and at least partially in sight (most common case).
// - Case B: column is clipped / out of sight (because of scrolling or parent ClipRect): TableNextColumn() return false as a hint but we still allow layout output.
// - Case C: column is hidden explicitly by the user (e.g. via the context menu, or _DefaultHide column flag, etc.).
//
// [A] [B] [C]
// TableNextColumn(): true false false -> [userland] when TableNextColumn() / TableSetColumnIndex() return false, user can skip submitting items but only if the column doesn't contribute to row height.
// SkipItems: false false true -> [internal] when SkipItems is true, most widgets will early out if submitted, resulting is no layout output.
// ClipRect: normal zero-width zero-width -> [internal] when ClipRect is zero, ItemAdd() will return false and most widgets will early out mid-way.
// ImDrawList output: normal dummy dummy -> [internal] when using the dummy channel, ImDrawList submissions (if any) will be wasted (because cliprect is zero-width anyway).
//
// - We need distinguish those cases because non-hidden columns that are clipped outside of scrolling bounds should still contribute their height to the row.
// However, in the majority of cases, the contribution to row height is the same for all columns, or the tallest cells are known by the programmer.
//-----------------------------------------------------------------------------
// About clipping/culling of whole Tables:
// - Scrolling tables with a known outer size can be clipped earlier as BeginTable() will return false.
//-----------------------------------------------------------------------------
#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
#define _CRT_SECURE_NO_WARNINGS
#endif
#include "imgui.h"
#ifndef IMGUI_DISABLE
#ifndef IMGUI_DEFINE_MATH_OPERATORS
#define IMGUI_DEFINE_MATH_OPERATORS
#endif
#include "imgui_internal.h"
// System includes
#if defined(_MSC_VER) && _MSC_VER <= 1500 // MSVC 2008 or earlier
#include <stddef.h> // intptr_t
#else
#include <stdint.h> // intptr_t
#endif
//-------------------------------------------------------------------------
// Warnings
//-------------------------------------------------------------------------
// Visual Studio warnings
#ifdef _MSC_VER
#pragma warning (disable: 4127) // condition expression is constant
#pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
#if defined(_MSC_VER) && _MSC_VER >= 1922 // MSVC 2019 16.2 or later
#pragma warning (disable: 5054) // operator '|': deprecated between enumerations of different types
#endif
#endif
// Clang/GCC warnings with -Weverything
#if defined(__clang__)
#if __has_warning("-Wunknown-warning-option")
#pragma clang diagnostic ignored "-Wunknown-warning-option" // warning: unknown warning group 'xxx' // not all warnings are known by all Clang versions and they tend to be rename-happy.. so ignoring warnings triggers new warnings on some configuration. Great!
#endif
#pragma clang diagnostic ignored "-Wunknown-pragmas" // warning: unknown warning group 'xxx'
#pragma clang diagnostic ignored "-Wold-style-cast" // warning: use of old-style cast // yes, they are more terse.
#pragma clang diagnostic ignored "-Wfloat-equal" // warning: comparing floating point with == or != is unsafe // storing and comparing against same constants (typically 0.0f) is ok.
#pragma clang diagnostic ignored "-Wformat-nonliteral" // warning: format string is not a string literal // passing non-literal to vsnformat(). yes, user passing incorrect format strings can crash the code.
#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness
#pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant" // warning: zero as null pointer constant // some standard header variations use #define NULL 0
#pragma clang diagnostic ignored "-Wdouble-promotion" // warning: implicit conversion from 'float' to 'double' when passing argument to function // using printf() is a misery with this as C++ va_arg ellipsis changes float to double.
#pragma clang diagnostic ignored "-Wenum-enum-conversion" // warning: bitwise operation between different enumeration types ('XXXFlags_' and 'XXXFlagsPrivate_')
#pragma clang diagnostic ignored "-Wdeprecated-enum-enum-conversion"// warning: bitwise operation between different enumeration types ('XXXFlags_' and 'XXXFlagsPrivate_') is deprecated
#pragma clang diagnostic ignored "-Wimplicit-int-float-conversion" // warning: implicit conversion from 'xxx' to 'float' may lose precision
#elif defined(__GNUC__)
#pragma GCC diagnostic ignored "-Wpragmas" // warning: unknown option after '#pragma GCC diagnostic' kind
#pragma GCC diagnostic ignored "-Wformat-nonliteral" // warning: format not a string literal, format string not checked
#pragma GCC diagnostic ignored "-Wclass-memaccess" // [__GNUC__ >= 8] warning: 'memset/memcpy' clearing/writing an object of type 'xxxx' with no trivial copy-assignment; use assignment or value-initialization instead
#endif
//-----------------------------------------------------------------------------
// [SECTION] Tables: Main code
//-----------------------------------------------------------------------------
// Configuration
static const int TABLE_DRAW_CHANNEL_BG0 = 0;
static const int TABLE_DRAW_CHANNEL_BG2_FROZEN = 1;
static const int TABLE_DRAW_CHANNEL_NOCLIP = 2; // When using ImGuiTableFlags_NoClip (this becomes the last visible channel)
static const float TABLE_BORDER_SIZE = 1.0f; // FIXME-TABLE: Currently hard-coded because of clipping assumptions with outer borders rendering.
static const float TABLE_RESIZE_SEPARATOR_HALF_THICKNESS = 4.0f; // Extend outside inner borders.
static const float TABLE_RESIZE_SEPARATOR_FEEDBACK_TIMER = 0.06f; // Delay/timer before making the hover feedback (color+cursor) visible because tables/columns tends to be more cramped.
// Helper
inline ImGuiTableFlags TableFixFlags(ImGuiTableFlags flags, ImGuiWindow* outer_window)
{
// Adjust flags: set default sizing policy
if ((flags & (ImGuiTableFlags_ColumnsWidthStretch | ImGuiTableFlags_ColumnsWidthFixed)) == 0)
flags |= (flags & ImGuiTableFlags_ScrollX) ? ImGuiTableFlags_ColumnsWidthFixed : ImGuiTableFlags_ColumnsWidthStretch;
// Adjust flags: disable Resizable when using SameWidths (done above enforcing BordersInnerV)
if (flags & ImGuiTableFlags_SameWidths)
flags = (flags & ~ImGuiTableFlags_Resizable) | ImGuiTableFlags_NoKeepColumnsVisible;
// Adjust flags: enforce borders when resizable
if (flags & ImGuiTableFlags_Resizable)
flags |= ImGuiTableFlags_BordersInnerV;
// Adjust flags: disable NoHostExtendY if we have any scrolling going on
if ((flags & ImGuiTableFlags_NoHostExtendY) && (flags & (ImGuiTableFlags_ScrollX | ImGuiTableFlags_ScrollY)) != 0)
flags &= ~ImGuiTableFlags_NoHostExtendY;
// Adjust flags: NoBordersInBodyUntilResize takes priority over NoBordersInBody
if (flags & ImGuiTableFlags_NoBordersInBodyUntilResize)
flags &= ~ImGuiTableFlags_NoBordersInBody;
// Adjust flags: disable saved settings if there's nothing to save
if ((flags & (ImGuiTableFlags_Resizable | ImGuiTableFlags_Hideable | ImGuiTableFlags_Reorderable | ImGuiTableFlags_Sortable)) == 0)
flags |= ImGuiTableFlags_NoSavedSettings;
// Inherit _NoSavedSettings from top-level window (child windows always have _NoSavedSettings set)
#ifdef IMGUI_HAS_DOCK
ImGuiWindow* window_for_settings = outer_window->RootWindowDockStop;
#else
ImGuiWindow* window_for_settings = outer_window->RootWindow;
#endif
if (window_for_settings->Flags & ImGuiWindowFlags_NoSavedSettings)
flags |= ImGuiTableFlags_NoSavedSettings;
return flags;
}
ImGuiTable* ImGui::TableFindByID(ImGuiID id)
{
ImGuiContext& g = *GImGui;
return g.Tables.GetByKey(id);
}
// Read about "TABLE SIZING" at the top of this file.
bool ImGui::BeginTable(const char* str_id, int columns_count, ImGuiTableFlags flags, const ImVec2& outer_size, float inner_width)
{
ImGuiID id = GetID(str_id);
return BeginTableEx(str_id, id, columns_count, flags, outer_size, inner_width);
}
bool ImGui::BeginTableEx(const char* name, ImGuiID id, int columns_count, ImGuiTableFlags flags, const ImVec2& outer_size, float inner_width)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* outer_window = GetCurrentWindow();
if (outer_window->SkipItems) // Consistent with other tables + beneficial side effect that assert on miscalling EndTable() will be more visible.
return false;
// Sanity checks
IM_ASSERT(columns_count > 0 && columns_count <= IMGUI_TABLE_MAX_COLUMNS && "Only 1..64 columns allowed!");
if (flags & ImGuiTableFlags_ScrollX)
IM_ASSERT(inner_width >= 0.0f);
// If an outer size is specified ahead we will be able to early out when not visible. Exact clipping rules may evolve.
const bool use_child_window = (flags & (ImGuiTableFlags_ScrollX | ImGuiTableFlags_ScrollY)) != 0;
const ImVec2 avail_size = GetContentRegionAvail();
ImVec2 actual_outer_size = CalcItemSize(outer_size, ImMax(avail_size.x, 1.0f), use_child_window ? ImMax(avail_size.y, 1.0f) : 0.0f);
ImRect outer_rect(outer_window->DC.CursorPos, outer_window->DC.CursorPos + actual_outer_size);
if (use_child_window && IsClippedEx(outer_rect, 0, false))
{
ItemSize(outer_rect);
return false;
}
// Acquire storage for the table
ImGuiTable* table = g.Tables.GetOrAddByKey(id);
const int instance_no = (table->LastFrameActive != g.FrameCount) ? 0 : table->InstanceCurrent + 1;
const ImGuiID instance_id = id + instance_no;
const ImGuiTableFlags table_last_flags = table->Flags;
if (instance_no > 0)
IM_ASSERT(table->ColumnsCount == columns_count && "BeginTable(): Cannot change columns count mid-frame while preserving same ID");
// Fix flags
flags = TableFixFlags(flags, outer_window);
// Initialize
table->ID = id;
table->Flags = flags;
table->InstanceCurrent = (ImS16)instance_no;
table->LastFrameActive = g.FrameCount;
table->OuterWindow = table->InnerWindow = outer_window;
table->ColumnsCount = columns_count;
table->IsLayoutLocked = false;
table->InnerWidth = inner_width;
table->IsOuterRectAutoFitX = (outer_size.x == 0.0f) && (use_child_window == false);
// When not using a child window, WorkRect.Max will grow as we append contents.
if (use_child_window)
{
// Ensure no vertical scrollbar appears if we only want horizontal one, to make flag consistent
// (we have no other way to disable vertical scrollbar of a window while keeping the horizontal one showing)
ImVec2 override_content_size(FLT_MAX, FLT_MAX);
if ((flags & ImGuiTableFlags_ScrollX) && !(flags & ImGuiTableFlags_ScrollY))
override_content_size.y = FLT_MIN;
// Ensure specified width (when not specified, Stretched columns will act as if the width == OuterWidth and
// never lead to any scrolling). We don't handle inner_width < 0.0f, we could potentially use it to right-align
// based on the right side of the child window work rect, which would require knowing ahead if we are going to
// have decoration taking horizontal spaces (typically a vertical scrollbar).
if ((flags & ImGuiTableFlags_ScrollX) && inner_width > 0.0f)
override_content_size.x = inner_width;
if (override_content_size.x != FLT_MAX || override_content_size.y != FLT_MAX)
SetNextWindowContentSize(ImVec2(override_content_size.x != FLT_MAX ? override_content_size.x : 0.0f, override_content_size.y != FLT_MAX ? override_content_size.y : 0.0f));
// Create scrolling region (without border and zero window padding)
ImGuiWindowFlags child_flags = (flags & ImGuiTableFlags_ScrollX) ? ImGuiWindowFlags_HorizontalScrollbar : ImGuiWindowFlags_None;
BeginChildEx(name, instance_id, outer_rect.GetSize(), false, child_flags);
table->InnerWindow = g.CurrentWindow;
table->WorkRect = table->InnerWindow->WorkRect;
table->OuterRect = table->InnerWindow->Rect();
table->InnerRect = table->InnerWindow->InnerRect;
IM_ASSERT(table->InnerWindow->WindowPadding.x == 0.0f && table->InnerWindow->WindowPadding.y == 0.0f && table->InnerWindow->WindowBorderSize == 0.0f);
}
else
{
// For non-scrolling tables, WorkRect == OuterRect == InnerRect.
// But at this point we do NOT have a correct value for .Max.y (unless a height has been explicitly passed in). It will only be updated in EndTable().
table->WorkRect = table->OuterRect = table->InnerRect = outer_rect;
}
// Push a standardized ID for both child-using and not-child-using tables
PushOverrideID(instance_id);
// Backup a copy of host window members we will modify
ImGuiWindow* inner_window = table->InnerWindow;
table->HostIndentX = inner_window->DC.Indent.x;
table->HostClipRect = inner_window->ClipRect;
table->HostSkipItems = inner_window->SkipItems;
table->HostBackupWorkRect = inner_window->WorkRect;
table->HostBackupParentWorkRect = inner_window->ParentWorkRect;
table->HostBackupColumnsOffset = outer_window->DC.ColumnsOffset;
table->HostBackupPrevLineSize = inner_window->DC.PrevLineSize;
table->HostBackupCurrLineSize = inner_window->DC.CurrLineSize;
table->HostBackupCursorMaxPos = inner_window->DC.CursorMaxPos;
table->HostBackupItemWidth = outer_window->DC.ItemWidth;
table->HostBackupItemWidthStackSize = outer_window->DC.ItemWidthStack.Size;
inner_window->DC.PrevLineSize = inner_window->DC.CurrLineSize = ImVec2(0.0f, 0.0f);
// Padding and Spacing
// - None ........Content..... Pad .....Content........
// - PadOuter | Pad ..Content..... Pad .....Content.. Pad |
// - PadInner ........Content.. Pad | Pad ..Content........
// - PadOuter+PadInner | Pad ..Content.. Pad | Pad ..Content.. Pad |
const bool pad_outer_x = (flags & ImGuiTableFlags_NoPadOuterX) ? false : (flags & ImGuiTableFlags_PadOuterX) ? true : (flags & ImGuiTableFlags_BordersOuterV) != 0;
const bool pad_inner_x = (flags & ImGuiTableFlags_NoPadInnerX) ? false : true;
const float inner_spacing_for_border = (flags & ImGuiTableFlags_BordersInnerV) ? TABLE_BORDER_SIZE : 0.0f;
const float inner_spacing_explicit = (pad_inner_x && (flags & ImGuiTableFlags_BordersInnerV) == 0) ? g.Style.CellPadding.x : 0.0f;
const float inner_padding_explicit = (pad_inner_x && (flags & ImGuiTableFlags_BordersInnerV) != 0) ? g.Style.CellPadding.x : 0.0f;
table->CellSpacingX1 = inner_spacing_explicit + inner_spacing_for_border;
table->CellSpacingX2 = inner_spacing_explicit;
table->CellPaddingX = inner_padding_explicit;
table->CellPaddingY = g.Style.CellPadding.y;
const float outer_padding_for_border = (flags & ImGuiTableFlags_BordersOuterV) ? TABLE_BORDER_SIZE : 0.0f;
const float outer_padding_explicit = pad_outer_x ? g.Style.CellPadding.x : 0.0f;
table->OuterPaddingX = (outer_padding_for_border + outer_padding_explicit) - table->CellPaddingX;
table->CurrentColumn = -1;
table->CurrentRow = -1;
table->RowBgColorCounter = 0;
table->LastRowFlags = ImGuiTableRowFlags_None;
table->InnerClipRect = (inner_window == outer_window) ? table->WorkRect : inner_window->ClipRect;
table->InnerClipRect.ClipWith(table->WorkRect); // We need this to honor inner_width
table->InnerClipRect.ClipWithFull(table->HostClipRect);
table->InnerClipRect.Max.y = (flags & ImGuiTableFlags_NoHostExtendY) ? ImMin(table->InnerClipRect.Max.y, inner_window->WorkRect.Max.y) : inner_window->ClipRect.Max.y;
table->RowPosY1 = table->RowPosY2 = table->WorkRect.Min.y; // This is needed somehow
table->RowTextBaseline = 0.0f; // This will be cleared again by TableBeginRow()
table->FreezeRowsRequest = table->FreezeRowsCount = 0; // This will be setup by TableSetupScrollFreeze(), if any
table->FreezeColumnsRequest = table->FreezeColumnsCount = 0;
table->IsUnfrozen = true;
table->DeclColumnsCount = 0;
// Using opaque colors facilitate overlapping elements of the grid
table->BorderColorStrong = GetColorU32(ImGuiCol_TableBorderStrong);
table->BorderColorLight = GetColorU32(ImGuiCol_TableBorderLight);
// Make table current
const int table_idx = g.Tables.GetIndex(table);
g.CurrentTableStack.push_back(ImGuiPtrOrIndex(table_idx));
g.CurrentTable = table;
outer_window->DC.CurrentTableIdx = table_idx;
if (inner_window != outer_window) // So EndChild() within the inner window can restore the table properly.
inner_window->DC.CurrentTableIdx = table_idx;
if ((table_last_flags & ImGuiTableFlags_Reorderable) && (flags & ImGuiTableFlags_Reorderable) == 0)
table->IsResetDisplayOrderRequest = true;
// Mark as used
if (table_idx >= g.TablesLastTimeActive.Size)
g.TablesLastTimeActive.resize(table_idx + 1, -1.0f);
g.TablesLastTimeActive[table_idx] = (float)g.Time;
table->MemoryCompacted = false;
// Setup memory buffer (clear data if columns count changed)
const int stored_size = table->Columns.size();
if (stored_size != 0 && stored_size != columns_count)
{
IM_FREE(table->RawData);
table->RawData = NULL;
}
if (table->RawData == NULL)
{
TableBeginInitMemory(table, columns_count);
table->IsInitializing = table->IsSettingsRequestLoad = true;
}
if (table->IsResetAllRequest)
TableResetSettings(table);
if (table->IsInitializing)
{
// Initialize
table->SettingsOffset = -1;
table->IsSortSpecsDirty = true;
table->InstanceInteracted = -1;
table->ContextPopupColumn = -1;
table->ReorderColumn = table->ResizedColumn = table->LastResizedColumn = -1;
table->AutoFitSingleStretchColumn = -1;
table->HoveredColumnBody = table->HoveredColumnBorder = -1;
for (int n = 0; n < columns_count; n++)
{
ImGuiTableColumn* column = &table->Columns[n];
float width_auto = column->WidthAuto;
*column = ImGuiTableColumn();
column->WidthAuto = width_auto;
column->IsPreserveWidthAuto = true; // Preserve WidthAuto when reinitializing a live table: not technically necessary but remove a visible flicker
column->DisplayOrder = table->DisplayOrderToIndex[n] = (ImGuiTableColumnIdx)n;
column->IsEnabled = column->IsEnabledNextFrame = true;
}
}
// Load settings
if (table->IsSettingsRequestLoad)
TableLoadSettings(table);
// Handle DPI/font resize
// This is designed to facilitate DPI changes with the assumption that e.g. style.CellPadding has been scaled as well.
// It will also react to changing fonts with mixed results. It doesn't need to be perfect but merely provide a decent transition.
// FIXME-DPI: Provide consistent standards for reference size. Perhaps using g.CurrentDpiScale would be more self explanatory.
// This is will lead us to non-rounded WidthRequest in columns, which should work but is a poorly tested path.
const float new_ref_scale_unit = g.FontSize; // g.Font->GetCharAdvance('A') ?
if (table->RefScale != 0.0f && table->RefScale != new_ref_scale_unit)
{
const float scale_factor = new_ref_scale_unit / table->RefScale;
//IMGUI_DEBUG_LOG("[table] %08X RefScaleUnit %.3f -> %.3f, scaling width by %.3f\n", table->ID, table->RefScaleUnit, new_ref_scale_unit, scale_factor);
for (int n = 0; n < columns_count; n++)
table->Columns[n].WidthRequest = table->Columns[n].WidthRequest * scale_factor;
}
table->RefScale = new_ref_scale_unit;
// Disable output until user calls TableNextRow() or TableNextColumn() leading to the TableUpdateLayout() call..
// This is not strictly necessary but will reduce cases were "out of table" output will be misleading to the user.
// Because we cannot safely assert in EndTable() when no rows have been created, this seems like our best option.
inner_window->SkipItems = true;
// Clear names
// At this point the ->NameOffset field of each column will be invalid until TableUpdateLayout() or the first call to TableSetupColumn()
if (table->ColumnsNames.Buf.Size > 0)
table->ColumnsNames.Buf.resize(0);
// Apply queued resizing/reordering/hiding requests
TableBeginApplyRequests(table);
return true;
}
// For reference, the average total _allocation count_ for a table is:
// + 0 (for ImGuiTable instance, we are pooling allocations in g.Tables)
// + 1 (for table->RawData allocated below)
// + 1 (for table->ColumnsNames, if names are used)
// + 1 (for table->Splitter._Channels)
// + 2 * active_channels_count (for ImDrawCmd and ImDrawIdx buffers inside channels)
// Where active_channels_count is variable but often == columns_count or columns_count + 1, see TableSetupDrawChannels() for details.
// Unused channels don't perform their +2 allocations.
void ImGui::TableBeginInitMemory(ImGuiTable* table, int columns_count)
{
// Allocate single buffer for our arrays
ImSpanAllocator<3> span_allocator;
span_allocator.ReserveBytes(0, columns_count * sizeof(ImGuiTableColumn));
span_allocator.ReserveBytes(1, columns_count * sizeof(ImGuiTableColumnIdx));
span_allocator.ReserveBytes(2, columns_count * sizeof(ImGuiTableCellData));
table->RawData = IM_ALLOC(span_allocator.GetArenaSizeInBytes());
memset(table->RawData, 0, span_allocator.GetArenaSizeInBytes());
span_allocator.SetArenaBasePtr(table->RawData);
span_allocator.GetSpan(0, &table->Columns);
span_allocator.GetSpan(1, &table->DisplayOrderToIndex);
span_allocator.GetSpan(2, &table->RowCellData);
}
// Apply queued resizing/reordering/hiding requests
void ImGui::TableBeginApplyRequests(ImGuiTable* table)
{
// Handle resizing request
// (We process this at the first TableBegin of the frame)
// FIXME-TABLE: Contains columns if our work area doesn't allow for scrolling?
if (table->InstanceCurrent == 0)
{
if (table->ResizedColumn != -1 && table->ResizedColumnNextWidth != FLT_MAX)
TableSetColumnWidth(table->ResizedColumn, table->ResizedColumnNextWidth);
table->LastResizedColumn = table->ResizedColumn;
table->ResizedColumnNextWidth = FLT_MAX;
table->ResizedColumn = -1;
// Process auto-fit for single stretch column, which is a special case
// FIXME-TABLE: Would be nice to redistribute available stretch space accordingly to other weights, instead of giving it all to siblings.
if (table->AutoFitSingleStretchColumn != -1)
{
TableSetColumnWidth(table->AutoFitSingleStretchColumn, table->Columns[table->AutoFitSingleStretchColumn].WidthAuto);
table->AutoFitSingleStretchColumn = -1;
}
}
// Handle reordering request
// Note: we don't clear ReorderColumn after handling the request.
if (table->InstanceCurrent == 0)
{
if (table->HeldHeaderColumn == -1 && table->ReorderColumn != -1)
table->ReorderColumn = -1;
table->HeldHeaderColumn = -1;
if (table->ReorderColumn != -1 && table->ReorderColumnDir != 0)
{
// We need to handle reordering across hidden columns.
// In the configuration below, moving C to the right of E will lead to:
// ... C [D] E ---> ... [D] E C (Column name/index)
// ... 2 3 4 ... 2 3 4 (Display order)
const int reorder_dir = table->ReorderColumnDir;
IM_ASSERT(reorder_dir == -1 || reorder_dir == +1);
IM_ASSERT(table->Flags & ImGuiTableFlags_Reorderable);
ImGuiTableColumn* src_column = &table->Columns[table->ReorderColumn];
ImGuiTableColumn* dst_column = &table->Columns[(reorder_dir == -1) ? src_column->PrevEnabledColumn : src_column->NextEnabledColumn];
IM_UNUSED(dst_column);
const int src_order = src_column->DisplayOrder;
const int dst_order = dst_column->DisplayOrder;
src_column->DisplayOrder = (ImGuiTableColumnIdx)dst_order;
for (int order_n = src_order + reorder_dir; order_n != dst_order + reorder_dir; order_n += reorder_dir)
table->Columns[table->DisplayOrderToIndex[order_n]].DisplayOrder -= (ImGuiTableColumnIdx)reorder_dir;
IM_ASSERT(dst_column->DisplayOrder == dst_order - reorder_dir);
// Display order is stored in both columns->IndexDisplayOrder and table->DisplayOrder[],
// rebuild the later from the former.
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
table->DisplayOrderToIndex[table->Columns[column_n].DisplayOrder] = (ImGuiTableColumnIdx)column_n;
table->ReorderColumnDir = 0;
table->IsSettingsDirty = true;
}
}
// Handle display order reset request
if (table->IsResetDisplayOrderRequest)
{
for (int n = 0; n < table->ColumnsCount; n++)
table->DisplayOrderToIndex[n] = table->Columns[n].DisplayOrder = (ImGuiTableColumnIdx)n;
table->IsResetDisplayOrderRequest = false;
table->IsSettingsDirty = true;
}
}
// Adjust flags: default width mode + stretch columns are not allowed when auto extending
static void TableSetupColumnFlags(ImGuiTable* table, ImGuiTableColumn* column, ImGuiTableColumnFlags flags_in)
{
ImGuiTableColumnFlags flags = flags_in;
// Sizing Policy
if ((flags & ImGuiTableColumnFlags_WidthMask_) == 0)
{
// FIXME-TABLE: Inconsistent to promote columns to WidthAutoResize
if (table->Flags & ImGuiTableFlags_ColumnsWidthFixed)
flags |= ((table->Flags & ImGuiTableFlags_Resizable) && !(flags & ImGuiTableColumnFlags_NoResize)) ? ImGuiTableColumnFlags_WidthFixed : ImGuiTableColumnFlags_WidthAutoResize;
else
flags |= ImGuiTableColumnFlags_WidthStretch;
}
IM_ASSERT(ImIsPowerOfTwo(flags & ImGuiTableColumnFlags_WidthMask_)); // Check that only 1 of each set is used.
if (flags & ImGuiTableColumnFlags_WidthAutoResize)
flags |= ImGuiTableColumnFlags_NoResize;
// Sorting
if ((flags & ImGuiTableColumnFlags_NoSortAscending) && (flags & ImGuiTableColumnFlags_NoSortDescending))
flags |= ImGuiTableColumnFlags_NoSort;
// Indentation
if ((flags & ImGuiTableColumnFlags_IndentMask_) == 0)
flags |= (table->Columns.index_from_ptr(column) == 0) ? ImGuiTableColumnFlags_IndentEnable : ImGuiTableColumnFlags_IndentDisable;
// Alignment
//if ((flags & ImGuiTableColumnFlags_AlignMask_) == 0)
// flags |= ImGuiTableColumnFlags_AlignCenter;
//IM_ASSERT(ImIsPowerOfTwo(flags & ImGuiTableColumnFlags_AlignMask_)); // Check that only 1 of each set is used.
// Preserve status flags
column->Flags = flags | (column->Flags & ImGuiTableColumnFlags_StatusMask_);
// Build an ordered list of available sort directions
column->SortDirectionsAvailCount = column->SortDirectionsAvailMask = column->SortDirectionsAvailList = 0;
if (table->Flags & ImGuiTableFlags_Sortable)
{
int count = 0, mask = 0, list = 0;
if ((flags & ImGuiTableColumnFlags_PreferSortAscending) != 0 && (flags & ImGuiTableColumnFlags_NoSortAscending) == 0) { mask |= 1 << ImGuiSortDirection_Ascending; list |= ImGuiSortDirection_Ascending << (count << 1); count++; }
if ((flags & ImGuiTableColumnFlags_PreferSortDescending) != 0 && (flags & ImGuiTableColumnFlags_NoSortDescending) == 0) { mask |= 1 << ImGuiSortDirection_Descending; list |= ImGuiSortDirection_Descending << (count << 1); count++; }
if ((flags & ImGuiTableColumnFlags_PreferSortAscending) == 0 && (flags & ImGuiTableColumnFlags_NoSortAscending) == 0) { mask |= 1 << ImGuiSortDirection_Ascending; list |= ImGuiSortDirection_Ascending << (count << 1); count++; }
if ((flags & ImGuiTableColumnFlags_PreferSortDescending) == 0 && (flags & ImGuiTableColumnFlags_NoSortDescending) == 0) { mask |= 1 << ImGuiSortDirection_Descending; list |= ImGuiSortDirection_Descending << (count << 1); count++; }
if ((table->Flags & ImGuiTableFlags_SortTristate) || count == 0) { mask |= 1 << ImGuiSortDirection_None; count++; }
column->SortDirectionsAvailList = (ImU8)list;
column->SortDirectionsAvailMask = (ImU8)mask;
column->SortDirectionsAvailCount = (ImU8)count;
ImGui::TableFixColumnSortDirection(table, column);
}
}
// Layout columns for the frame. This is in essence the followup to BeginTable().
// Runs on the first call to TableNextRow(), to give a chance for TableSetupColumn() to be called first.
// FIXME-TABLE: Our width (and therefore our WorkRect) will be minimal in the first frame for WidthAutoResize
// columns, increase feedback side-effect with widgets relying on WorkRect.Max.x. Maybe provide a default distribution
// for WidthAutoResize columns?
void ImGui::TableUpdateLayout(ImGuiTable* table)
{
ImGuiContext& g = *GImGui;
IM_ASSERT(table->IsLayoutLocked == false);
// [Part 1] Apply/lock Enabled and Order states.
// Process columns in their visible orders as we are building the Prev/Next indices.
int last_visible_column_idx = -1;
bool want_column_auto_fit = false;
table->IsDefaultDisplayOrder = true;
table->ColumnsEnabledCount = 0;
table->EnabledMaskByIndex = 0x00;
table->EnabledMaskByDisplayOrder = 0x00;
for (int order_n = 0; order_n < table->ColumnsCount; order_n++)
{
const int column_n = table->DisplayOrderToIndex[order_n];
if (column_n != order_n)
table->IsDefaultDisplayOrder = false;
ImGuiTableColumn* column = &table->Columns[column_n];
// Clear column settings if not submitted by user.
// Currently we make it mandatory to call TableSetupColumn() every frame.
// It would easily work without but we're ready to guarantee it since e.g. names need resubmission anyway.
// In theory we could be calling TableSetupColumn() here with dummy values it should yield the same effect.
if (column_n >= table->DeclColumnsCount)
{
TableSetupColumnFlags(table, column, ImGuiTableColumnFlags_None);
column->NameOffset = -1;
column->UserID = 0;
column->InitStretchWeightOrWidth = -1.0f;
}
if (!(table->Flags & ImGuiTableFlags_Hideable) || (column->Flags & ImGuiTableColumnFlags_NoHide))
column->IsEnabledNextFrame = true;
if (column->IsEnabled != column->IsEnabledNextFrame)
{
column->IsEnabled = column->IsEnabledNextFrame;
table->IsSettingsDirty = true;
if (!column->IsEnabled && column->SortOrder != -1)
table->IsSortSpecsDirty = true;
}
if (column->SortOrder > 0 && !(table->Flags & ImGuiTableFlags_SortMulti))
table->IsSortSpecsDirty = true;
bool start_auto_fit = false;
if (column->Flags & (ImGuiTableColumnFlags_WidthFixed | ImGuiTableColumnFlags_WidthAutoResize))
start_auto_fit = column->WidthRequest < 0.0f;
else
start_auto_fit = column->StretchWeight < 0.0f;
if (start_auto_fit)
column->AutoFitQueue = column->CannotSkipItemsQueue = (1 << 3) - 1; // Fit for three frames
if (column->AutoFitQueue != 0x00)
want_column_auto_fit = true;
ImU64 index_mask = (ImU64)1 << column_n;
ImU64 display_order_mask = (ImU64)1 << column->DisplayOrder;
if (column->IsEnabled)
{
// Mark as enabled and link to previous/next enabled column
column->PrevEnabledColumn = (ImGuiTableColumnIdx)last_visible_column_idx;
column->NextEnabledColumn = -1;
if (last_visible_column_idx != -1)
table->Columns[last_visible_column_idx].NextEnabledColumn = (ImGuiTableColumnIdx)column_n;
column->IndexWithinEnabledSet = table->ColumnsEnabledCount;
table->ColumnsEnabledCount++;
table->EnabledMaskByIndex |= index_mask;
table->EnabledMaskByDisplayOrder |= display_order_mask;
last_visible_column_idx = column_n;
}
else
{
column->IndexWithinEnabledSet = -1;
}
IM_ASSERT(column->IndexWithinEnabledSet <= column->DisplayOrder);
}
if ((table->Flags & ImGuiTableFlags_Sortable) && table->SortSpecsCount == 0 && !(table->Flags & ImGuiTableFlags_SortTristate))
table->IsSortSpecsDirty = true;
table->RightMostEnabledColumn = (ImGuiTableColumnIdx)last_visible_column_idx;
IM_ASSERT(table->RightMostEnabledColumn >= 0);
// [Part 2] Disable child window clipping while fitting columns. This is not strictly necessary but makes it possible
// to avoid the column fitting to wait until the first visible frame of the child container (may or not be a good thing).
// FIXME-TABLE: for always auto-resizing columns may not want to do that all the time.
if (want_column_auto_fit && table->OuterWindow != table->InnerWindow)
table->InnerWindow->SkipItems = false;
if (want_column_auto_fit)
table->IsSettingsDirty = true;
// [Part 3] Fix column flags. Calculate ideal width for columns. Count how many fixed/stretch columns we have and sum of weights.
const float min_column_width = TableGetMinColumnWidth();
int count_fixed = 0; // Number of columns that have fixed sizing policy (not stretched sizing policy) (this is NOT the opposite of count_resizable!)
int count_resizable = 0; // Number of columns the user can resize (this is NOT the opposite of count_fixed!)
float sum_weights_stretched = 0.0f; // Sum of all weights for weighted columns.
float sum_width_fixed_requests = 0.0f; // Sum of all width for fixed and auto-resize columns, excluding width contributed by Stretch columns.
float max_width_auto = 0.0f; // Largest auto-width (used for SameWidths feature)
table->LeftMostStretchedColumn = table->RightMostStretchedColumn = -1;
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
{
if (!(table->EnabledMaskByIndex & ((ImU64)1 << column_n)))
continue;
ImGuiTableColumn* column = &table->Columns[column_n];
// Count resizable columns
if ((column->Flags & ImGuiTableColumnFlags_NoResize) == 0)
count_resizable++;
// Calculate ideal/auto column width (that's the width required for all contents to be visible without clipping)
// Combine width from regular rows + width from headers unless requested not to.
if (!column->IsPreserveWidthAuto)
{
const float content_width_body = ImMax(column->ContentMaxXFrozen, column->ContentMaxXUnfrozen) - column->WorkMinX;
const float content_width_headers = column->ContentMaxXHeadersIdeal - column->WorkMinX;
float width_auto = content_width_body;
if (!(column->Flags & ImGuiTableColumnFlags_NoHeaderWidth))
width_auto = ImMax(width_auto, content_width_headers);
width_auto = ImMax(width_auto, min_column_width);
// Non-resizable columns also submit their requested width
if ((column->Flags & ImGuiTableColumnFlags_WidthFixed) && column->InitStretchWeightOrWidth > 0.0f)
if (!(table->Flags & ImGuiTableFlags_Resizable) || (column->Flags & ImGuiTableColumnFlags_NoResize))
width_auto = ImMax(width_auto, column->InitStretchWeightOrWidth);
column->WidthAuto = width_auto;
}
column->IsPreserveWidthAuto = false;
if (column->Flags & (ImGuiTableColumnFlags_WidthFixed | ImGuiTableColumnFlags_WidthAutoResize))
{
// Process auto-fit for non-stretched columns
// Latch initial size for fixed columns and update it constantly for auto-resizing column (unless clipped!)
if ((column->AutoFitQueue != 0x00) || ((column->Flags & ImGuiTableColumnFlags_WidthAutoResize) && column->IsVisibleX))
column->WidthRequest = column->WidthAuto;
// FIXME-TABLE: Increase minimum size during init frame to avoid biasing auto-fitting widgets
// (e.g. TextWrapped) too much. Otherwise what tends to happen is that TextWrapped would output a very
// large height (= first frame scrollbar display very off + clipper would skip lots of items).
// This is merely making the side-effect less extreme, but doesn't properly fixes it.
// FIXME: Move this to ->WidthGiven to avoid temporary lossyless?
if (column->AutoFitQueue > 0x01 && table->IsInitializing)
column->WidthRequest = ImMax(column->WidthRequest, min_column_width * 4.0f); // FIXME-TABLE: Another constant/scale?
count_fixed += 1;
sum_width_fixed_requests += column->WidthRequest;
}
else
{
IM_ASSERT(column->Flags & ImGuiTableColumnFlags_WidthStretch);
// Revert or initialize weight (when column->StretchWeight < 0.0f normally it means there has been no init value so it'll always default to 1.0f)
if (column->AutoFitQueue != 0x00 || column->StretchWeight < 0.0f)
column->StretchWeight = (column->InitStretchWeightOrWidth > 0.0f) ? column->InitStretchWeightOrWidth : 1.0f;
sum_weights_stretched += column->StretchWeight;
if (table->LeftMostStretchedColumn == -1 || table->Columns[table->LeftMostStretchedColumn].DisplayOrder > column->DisplayOrder)
table->LeftMostStretchedColumn = (ImGuiTableColumnIdx)column_n;
if (table->RightMostStretchedColumn == -1 || table->Columns[table->RightMostStretchedColumn].DisplayOrder < column->DisplayOrder)
table->RightMostStretchedColumn = (ImGuiTableColumnIdx)column_n;
}
max_width_auto = ImMax(max_width_auto, column->WidthAuto);
sum_width_fixed_requests += table->CellPaddingX * 2.0f;
}
table->ColumnsEnabledFixedCount = (ImGuiTableColumnIdx)count_fixed;
// [Part 4] Apply "same widths" feature.
// - When all columns are fixed or columns are of mixed type: use the maximum auto width.
// - When all columns are stretch: use same weight.
const bool mixed_same_widths = (table->Flags & ImGuiTableFlags_SameWidths) && count_fixed > 0;
if (table->Flags & ImGuiTableFlags_SameWidths)
{
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
{
if (!(table->EnabledMaskByIndex & ((ImU64)1 << column_n)))
continue;
ImGuiTableColumn* column = &table->Columns[column_n];
if (column->Flags & (ImGuiTableColumnFlags_WidthFixed | ImGuiTableColumnFlags_WidthAutoResize))
{
sum_width_fixed_requests += max_width_auto - column->WidthRequest; // Update old sum
column->WidthRequest = max_width_auto;
}
else
{
sum_weights_stretched += 1.0f - column->StretchWeight; // Update old sum
column->StretchWeight = 1.0f;
if (mixed_same_widths)
column->WidthRequest = max_width_auto;
}
}
}
// [Part 5] Apply final widths based on requested widths
const ImRect work_rect = table->WorkRect;
const float width_spacings = (table->OuterPaddingX * 2.0f) + (table->CellSpacingX1 + table->CellSpacingX2) * (table->ColumnsEnabledCount - 1);
const float width_avail = ((table->Flags & ImGuiTableFlags_ScrollX) && table->InnerWidth == 0.0f) ? table->InnerClipRect.GetWidth() : work_rect.GetWidth();
const float width_avail_for_stretched_columns = mixed_same_widths ? 0.0f : width_avail - width_spacings - sum_width_fixed_requests;
float width_remaining_for_stretched_columns = width_avail_for_stretched_columns;
table->ColumnsTotalWidth = width_spacings;
table->ColumnsAutoFitWidth = width_spacings;
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
{
if (!(table->EnabledMaskByIndex & ((ImU64)1 << column_n)))
continue;
ImGuiTableColumn* column = &table->Columns[column_n];
// Allocate width for stretched/weighted columns (StretchWeight gets converted into WidthRequest)
if ((column->Flags & ImGuiTableColumnFlags_WidthStretch) && !mixed_same_widths)
{
float weight_ratio = column->StretchWeight / sum_weights_stretched;
column->WidthRequest = IM_FLOOR(ImMax(width_avail_for_stretched_columns * weight_ratio, min_column_width) + 0.01f);
width_remaining_for_stretched_columns -= column->WidthRequest;
}
// [Resize Rule 1] The right-most Visible column is not resizable if there is at least one Stretch column
// See additional comments in TableSetColumnWidth().
if (column->NextEnabledColumn == -1 && table->LeftMostStretchedColumn != -1)
column->Flags |= ImGuiTableColumnFlags_NoDirectResize_;
// Assign final width, record width in case we will need to shrink
column->WidthGiven = ImFloor(ImMax(column->WidthRequest, min_column_width));
table->ColumnsTotalWidth += column->WidthGiven + table->CellPaddingX * 2.0f;
table->ColumnsAutoFitWidth += column->WidthAuto + table->CellPaddingX * 2.0f;
}
// [Part 6] Redistribute stretch remainder width due to rounding (remainder width is < 1.0f * number of Stretch column).
// Using right-to-left distribution (more likely to match resizing cursor).
if (width_remaining_for_stretched_columns >= 1.0f && !(table->Flags & ImGuiTableFlags_PreciseWidths))
for (int order_n = table->ColumnsCount - 1; sum_weights_stretched > 0.0f && width_remaining_for_stretched_columns >= 1.0f && order_n >= 0; order_n--)
{
if (!(table->EnabledMaskByDisplayOrder & ((ImU64)1 << order_n)))
continue;
ImGuiTableColumn* column = &table->Columns[table->DisplayOrderToIndex[order_n]];
if (!(column->Flags & ImGuiTableColumnFlags_WidthStretch))
continue;
column->WidthRequest += 1.0f;
column->WidthGiven += 1.0f;
width_remaining_for_stretched_columns -= 1.0f;
}
table->HoveredColumnBody = -1;
table->HoveredColumnBorder = -1;
const ImRect mouse_hit_rect(table->OuterRect.Min.x, table->OuterRect.Min.y, table->OuterRect.Max.x, ImMax(table->OuterRect.Max.y, table->OuterRect.Min.y + table->LastOuterHeight));
const bool is_hovering_table = ItemHoverable(mouse_hit_rect, 0);
// [Part 7] Setup final position, offset, skip/clip states and clipping rectangles, detect hovered column
// Process columns in their visible orders as we are comparing the visible order and adjusting host_clip_rect while looping.
int visible_n = 0;
float offset_x = ((table->FreezeColumnsCount > 0) ? table->OuterRect.Min.x : work_rect.Min.x) + table->OuterPaddingX - table->CellSpacingX1;
ImRect host_clip_rect = table->InnerClipRect;
//host_clip_rect.Max.x += table->CellPaddingX + table->CellSpacingX2;
table->VisibleMaskByIndex = 0x00;
table->RequestOutputMaskByIndex = 0x00;
for (int order_n = 0; order_n < table->ColumnsCount; order_n++)
{
const int column_n = table->DisplayOrderToIndex[order_n];
ImGuiTableColumn* column = &table->Columns[column_n];
column->NavLayerCurrent = (ImS8)((table->FreezeRowsCount > 0 || column_n < table->FreezeColumnsCount) ? ImGuiNavLayer_Menu : ImGuiNavLayer_Main);
if (table->FreezeColumnsCount > 0 && table->FreezeColumnsCount == visible_n)
offset_x += work_rect.Min.x - table->OuterRect.Min.x;
// Clear status flags
column->Flags &= ~ImGuiTableColumnFlags_StatusMask_;
if ((table->EnabledMaskByDisplayOrder & ((ImU64)1 << order_n)) == 0)
{
// Hidden column: clear a few fields and we are done with it for the remainder of the function.
// We set a zero-width clip rect but set Min.y/Max.y properly to not interfere with the clipper.
column->MinX = column->MaxX = column->WorkMinX = column->ClipRect.Min.x = column->ClipRect.Max.x = offset_x;
column->WidthGiven = 0.0f;
column->ClipRect.Min.y = work_rect.Min.y;
column->ClipRect.Max.y = FLT_MAX;
column->ClipRect.ClipWithFull(host_clip_rect);
column->IsVisibleX = column->IsVisibleY = column->IsRequestOutput = false;
column->IsSkipItems = true;
column->ItemWidth = 1.0f;
continue;
}
// Detect hovered column
if (is_hovering_table && g.IO.MousePos.x >= column->ClipRect.Min.x && g.IO.MousePos.x < column->ClipRect.Max.x)
table->HoveredColumnBody = (ImGuiTableColumnIdx)column_n;
// Lock start position
column->MinX = offset_x;
// Lock width based on start position and minimum/maximum width for this position
float max_width = TableGetMaxColumnWidth(table, column_n);
column->WidthGiven = ImMin(column->WidthGiven, max_width);
column->WidthGiven = ImMax(column->WidthGiven, ImMin(column->WidthRequest, min_column_width));
column->MaxX = offset_x + column->WidthGiven + table->CellSpacingX1 + table->CellSpacingX2 + table->CellPaddingX * 2.0f;
// Lock other positions
// - ClipRect.Min.x: Because merging draw commands doesn't compare min boundaries, we make ClipRect.Min.x match left bounds to be consistent regardless of merging.
// - ClipRect.Max.x: using WorkMaxX instead of MaxX (aka including padding) makes things more consistent when resizing down, tho slightly detrimental to visibility in very-small column.
// - ClipRect.Max.x: using MaxX makes it easier for header to receive hover highlight with no discontinuity and display sorting arrow.
// - FIXME-TABLE: We want equal width columns to have equal (ClipRect.Max.x - WorkMinX) width, which means ClipRect.max.x cannot stray off host_clip_rect.Max.x else right-most column may appear shorter.
column->WorkMinX = column->MinX + table->CellPaddingX + table->CellSpacingX1;
column->WorkMaxX = column->MaxX - table->CellPaddingX - table->CellSpacingX2; // Expected max
column->ItemWidth = ImFloor(column->WidthGiven * 0.65f);
column->ClipRect.Min.x = column->MinX;
column->ClipRect.Min.y = work_rect.Min.y;
column->ClipRect.Max.x = column->MaxX; //column->WorkMaxX;
column->ClipRect.Max.y = FLT_MAX;
column->ClipRect.ClipWithFull(host_clip_rect);
// Mark column as Clipped (not in sight)
// Note that scrolling tables (where inner_window != outer_window) handle Y clipped earlier in BeginTable() so IsVisibleY really only applies to non-scrolling tables.
// FIXME-TABLE: Because InnerClipRect.Max.y is conservatively ==outer_window->ClipRect.Max.y, we never can mark columns _Above_ the scroll line as not IsVisibleY.
// Taking advantage of LastOuterHeight would yield good results there...
// FIXME-TABLE: Y clipping is disabled because it effectively means not submitting will reduce contents width which is fed to outer_window->DC.CursorMaxPos.x,
// and this may be used (e.g. typically by outer_window using AlwaysAutoResize or outer_window's horizontal scrollbar, but could be something else).
// Possible solution to preserve last known content width for clipped column. Test 'table_reported_size' fails when enabling Y clipping and window is resized small.
column->IsVisibleX = (column->ClipRect.Max.x > column->ClipRect.Min.x);
column->IsVisibleY = true; // (column->ClipRect.Max.y > column->ClipRect.Min.y);
const bool is_visible = column->IsVisibleX; //&& column->IsVisibleY;
if (is_visible)
table->VisibleMaskByIndex |= ((ImU64)1 << column_n);
// Mark column as requesting output from user. Note that fixed + non-resizable sets are auto-fitting at all times and therefore always request output.
column->IsRequestOutput = is_visible || column->AutoFitQueue != 0 || column->CannotSkipItemsQueue != 0;
if (column->IsRequestOutput)
table->RequestOutputMaskByIndex |= ((ImU64)1 << column_n);
// Mark column as SkipItems (ignoring all items/layout)
column->IsSkipItems = !column->IsEnabled || table->HostSkipItems;
if (column->IsSkipItems)
IM_ASSERT(!is_visible);
// Update status flags
column->Flags |= ImGuiTableColumnFlags_IsEnabled;
if (is_visible)
column->Flags |= ImGuiTableColumnFlags_IsVisible;
if (column->SortOrder != -1)
column->Flags |= ImGuiTableColumnFlags_IsSorted;
if (table->HoveredColumnBody == column_n)
column->Flags |= ImGuiTableColumnFlags_IsHovered;
// Alignment
// FIXME-TABLE: This align based on the whole column width, not per-cell, and therefore isn't useful in
// many cases (to be able to honor this we might be able to store a log of cells width, per row, for
// visible rows, but nav/programmatic scroll would have visible artifacts.)
//if (column->Flags & ImGuiTableColumnFlags_AlignRight)
// column->WorkMinX = ImMax(column->WorkMinX, column->MaxX - column->ContentWidthRowsUnfrozen);
//else if (column->Flags & ImGuiTableColumnFlags_AlignCenter)
// column->WorkMinX = ImLerp(column->WorkMinX, ImMax(column->StartX, column->MaxX - column->ContentWidthRowsUnfrozen), 0.5f);
// Reset content width variables
column->ContentMaxXFrozen = column->ContentMaxXUnfrozen = column->WorkMinX;
column->ContentMaxXHeadersUsed = column->ContentMaxXHeadersIdeal = column->WorkMinX;
// Don't decrement auto-fit counters until container window got a chance to submit its items
if (table->HostSkipItems == false)
{
column->AutoFitQueue >>= 1;
column->CannotSkipItemsQueue >>= 1;
}
if (visible_n < table->FreezeColumnsCount)
host_clip_rect.Min.x = ImMax(host_clip_rect.Min.x, column->MaxX + TABLE_BORDER_SIZE);
offset_x += column->WidthGiven + table->CellSpacingX1 + table->CellSpacingX2 + table->CellPaddingX * 2.0f;
visible_n++;
}
// [Part 8] Detect/store when we are hovering the unused space after the right-most column (so e.g. context menus can react on it)
// Clear Resizable flag if none of our column are actually resizable (either via an explicit _NoResize flag, either
// because of using _WidthAutoResize/_WidthStretch). This will hide the resizing option from the context menu.
const float unused_x1 = ImMax(table->WorkRect.Min.x, table->Columns[table->RightMostEnabledColumn].ClipRect.Max.x);
if (is_hovering_table && table->HoveredColumnBody == -1)
{
if (g.IO.MousePos.x >= unused_x1)
table->HoveredColumnBody = (ImGuiTableColumnIdx)table->ColumnsCount;
}
if (count_resizable == 0 && (table->Flags & ImGuiTableFlags_Resizable))
table->Flags &= ~ImGuiTableFlags_Resizable;
// [Part 9] Lock actual OuterRect/WorkRect right-most position.
// This is done late to handle the case of fixed-columns tables not claiming more widths that they need.
// Because of this we are careful with uses of WorkRect and InnerClipRect before this point.
if (table->RightMostStretchedColumn != -1)
table->IsOuterRectAutoFitX = false;
if (table->IsOuterRectAutoFitX)
{
table->OuterRect.Max.x = table->WorkRect.Max.x = unused_x1;
table->InnerClipRect.Max.x = ImMin(table->InnerClipRect.Max.x, unused_x1);
}
table->InnerWindow->ParentWorkRect = table->WorkRect;
table->BorderX1 = table->InnerClipRect.Min.x;// +((table->Flags & ImGuiTableFlags_BordersOuter) ? 0.0f : -1.0f);
table->BorderX2 = table->InnerClipRect.Max.x;// +((table->Flags & ImGuiTableFlags_BordersOuter) ? 0.0f : +1.0f);
// [Part 10] Allocate draw channels and setup background cliprect
TableSetupDrawChannels(table);
// [Part 11] Hit testing on borders
if (table->Flags & ImGuiTableFlags_Resizable)
TableUpdateBorders(table);
table->LastFirstRowHeight = 0.0f;
table->IsLayoutLocked = true;
table->IsUsingHeaders = false;
// [Part 12] Context menu
if (table->IsContextPopupOpen && table->InstanceCurrent == table->InstanceInteracted)
{
const ImGuiID context_menu_id = ImHashStr("##ContextMenu", 0, table->ID);
if (BeginPopupEx(context_menu_id, ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoSavedSettings))
{
TableDrawContextMenu(table);
EndPopup();
}
else
{
table->IsContextPopupOpen = false;
}
}
// [Part 13] Sanitize and build sort specs before we have a change to use them for display.
// This path will only be exercised when sort specs are modified before header rows (e.g. init or visibility change)
if (table->IsSortSpecsDirty && (table->Flags & ImGuiTableFlags_Sortable))
TableSortSpecsBuild(table);
// Initial state
ImGuiWindow* inner_window = table->InnerWindow;
if (table->Flags & ImGuiTableFlags_NoClip)
table->DrawSplitter.SetCurrentChannel(inner_window->DrawList, TABLE_DRAW_CHANNEL_NOCLIP);
else
inner_window->DrawList->PushClipRect(inner_window->ClipRect.Min, inner_window->ClipRect.Max, false);
}
// Process hit-testing on resizing borders. Actual size change will be applied in EndTable()
// - Set table->HoveredColumnBorder with a short delay/timer to reduce feedback noise
// - Submit ahead of table contents and header, use ImGuiButtonFlags_AllowItemOverlap to prioritize widgets
// overlapping the same area.
void ImGui::TableUpdateBorders(ImGuiTable* table)
{
ImGuiContext& g = *GImGui;
IM_ASSERT(table->Flags & ImGuiTableFlags_Resizable);
// At this point OuterRect height may be zero or under actual final height, so we rely on temporal coherency and
// use the final height from last frame. Because this is only affecting _interaction_ with columns, it is not
// really problematic (whereas the actual visual will be displayed in EndTable() and using the current frame height).
// Actual columns highlight/render will be performed in EndTable() and not be affected.
const float hit_half_width = TABLE_RESIZE_SEPARATOR_HALF_THICKNESS;
const float hit_y1 = table->OuterRect.Min.y;
const float hit_y2_body = ImMax(table->OuterRect.Max.y, hit_y1 + table->LastOuterHeight);
const float hit_y2_head = hit_y1 + table->LastFirstRowHeight;
for (int order_n = 0; order_n < table->ColumnsCount; order_n++)
{
if (!(table->EnabledMaskByDisplayOrder & ((ImU64)1 << order_n)))
continue;
const int column_n = table->DisplayOrderToIndex[order_n];
ImGuiTableColumn* column = &table->Columns[column_n];
if (column->Flags & (ImGuiTableColumnFlags_NoResize | ImGuiTableColumnFlags_NoDirectResize_))
continue;
// ImGuiTableFlags_NoBordersInBodyUntilResize will be honored in TableDrawBorders()
const float border_y2_hit = (table->Flags & ImGuiTableFlags_NoBordersInBody) ? hit_y2_head : hit_y2_body;
if ((table->Flags & ImGuiTableFlags_NoBordersInBody) && table->IsUsingHeaders == false)
continue;
ImGuiID column_id = TableGetColumnResizeID(table, column_n, table->InstanceCurrent);
ImRect hit_rect(column->MaxX - hit_half_width, hit_y1, column->MaxX + hit_half_width, border_y2_hit);
//GetForegroundDrawList()->AddRect(hit_rect.Min, hit_rect.Max, IM_COL32(255, 0, 0, 100));
KeepAliveID(column_id);
bool hovered = false, held = false;
bool pressed = ButtonBehavior(hit_rect, column_id, &hovered, &held, ImGuiButtonFlags_FlattenChildren | ImGuiButtonFlags_AllowItemOverlap | ImGuiButtonFlags_PressedOnClick | ImGuiButtonFlags_PressedOnDoubleClick);
if (pressed && IsMouseDoubleClicked(0))
{
TableSetColumnWidthAutoSingle(table, column_n);
ClearActiveID();
held = hovered = false;
}
if (held)
{
if (table->LastResizedColumn == -1)
table->ResizeLockMinContentsX2 = table->RightMostEnabledColumn != -1 ? table->Columns[table->RightMostEnabledColumn].MaxX : -FLT_MAX;
table->ResizedColumn = (ImGuiTableColumnIdx)column_n;
table->InstanceInteracted = table->InstanceCurrent;
}
if ((hovered && g.HoveredIdTimer > TABLE_RESIZE_SEPARATOR_FEEDBACK_TIMER) || held)
{
table->HoveredColumnBorder = (ImGuiTableColumnIdx)column_n;
SetMouseCursor(ImGuiMouseCursor_ResizeEW);
}
}
}
void ImGui::EndTable()
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
IM_ASSERT(table != NULL && "Only call EndTable() if BeginTable() returns true!");
// This assert would be very useful to catch a common error... unfortunately it would probably trigger in some
// cases, and for consistency user may sometimes output empty tables (and still benefit from e.g. outer border)
//IM_ASSERT(table->IsLayoutLocked && "Table unused: never called TableNextRow(), is that the intent?");
// If the user never got to call TableNextRow() or TableNextColumn(), we call layout ourselves to ensure all our
// code paths are consistent (instead of just hoping that TableBegin/TableEnd will work), get borders drawn, etc.
if (!table->IsLayoutLocked)
TableUpdateLayout(table);
const ImGuiTableFlags flags = table->Flags;
ImGuiWindow* inner_window = table->InnerWindow;
ImGuiWindow* outer_window = table->OuterWindow;
IM_ASSERT(inner_window == g.CurrentWindow);
IM_ASSERT(outer_window == inner_window || outer_window == inner_window->ParentWindow);
if (table->IsInsideRow)
TableEndRow(table);
// Context menu in columns body
if (flags & ImGuiTableFlags_ContextMenuInBody)
if (table->HoveredColumnBody != -1 && !ImGui::IsAnyItemHovered() && ImGui::IsMouseReleased(ImGuiMouseButton_Right))
TableOpenContextMenu((int)table->HoveredColumnBody);
// Finalize table height
inner_window->DC.PrevLineSize = table->HostBackupPrevLineSize;
inner_window->DC.CurrLineSize = table->HostBackupCurrLineSize;
inner_window->DC.CursorMaxPos = table->HostBackupCursorMaxPos;
if (inner_window != outer_window)
{
// Both OuterRect/InnerRect are valid from BeginTable
inner_window->DC.CursorMaxPos.y = table->RowPosY2;
}
else if (!(flags & ImGuiTableFlags_NoHostExtendY))
{
// Patch OuterRect/InnerRect height
table->OuterRect.Max.y = table->InnerRect.Max.y = ImMax(table->OuterRect.Max.y, inner_window->DC.CursorPos.y);
inner_window->DC.CursorMaxPos.y = table->RowPosY2;
}
table->WorkRect.Max.y = ImMax(table->WorkRect.Max.y, table->OuterRect.Max.y);
table->LastOuterHeight = table->OuterRect.GetHeight();
if (!(flags & ImGuiTableFlags_NoClip))
inner_window->DrawList->PopClipRect();
inner_window->ClipRect = inner_window->DrawList->_ClipRectStack.back();
// Draw borders
if ((flags & ImGuiTableFlags_Borders) != 0)
TableDrawBorders(table);
// Store content width reference for each column (before attempting to merge draw calls)
const float backup_outer_cursor_pos_x = outer_window->DC.CursorPos.x;
const float backup_outer_max_pos_x = outer_window->DC.CursorMaxPos.x;
const float backup_inner_max_pos_x = inner_window->DC.CursorMaxPos.x;
float max_pos_x = backup_inner_max_pos_x;
if (table->RightMostEnabledColumn != -1)
max_pos_x = ImMax(max_pos_x, table->Columns[table->RightMostEnabledColumn].MaxX);
if (table->ResizedColumn != -1)
max_pos_x = ImMax(max_pos_x, table->ResizeLockMinContentsX2);
#if 0
// Strip out dummy channel draw calls
// We have no way to prevent user submitting direct ImDrawList calls into a hidden column (but ImGui:: calls will be clipped out)
// Pros: remove draw calls which will have no effect. since they'll have zero-size cliprect they may be early out anyway.
// Cons: making it harder for users watching metrics/debugger to spot the wasted vertices.
if (table->DummyDrawChannel != (ImGuiTableColumnIdx)-1)
{
ImDrawChannel* dummy_channel = &table->DrawSplitter._Channels[table->DummyDrawChannel];
dummy_channel->_CmdBuffer.resize(0);
dummy_channel->_IdxBuffer.resize(0);
}
#endif
// Flatten channels and merge draw calls
table->DrawSplitter.SetCurrentChannel(inner_window->DrawList, 0);
if ((table->Flags & ImGuiTableFlags_NoClip) == 0)
TableMergeDrawChannels(table);
table->DrawSplitter.Merge(inner_window->DrawList);
if (!(table->Flags & ImGuiTableFlags_ScrollX) && inner_window != outer_window)
{
inner_window->Scroll.x = 0.0f;
}
else if (table->LastResizedColumn != -1 && table->ResizedColumn == -1 && inner_window->ScrollbarX && table->InstanceInteracted == table->InstanceCurrent)
{
// When releasing a column being resized, scroll to keep the resulting column in sight
const float neighbor_width_to_keep_visible = TableGetMinColumnWidth() + table->CellPaddingX * 2.0f;
ImGuiTableColumn* column = &table->Columns[table->LastResizedColumn];
if (column->MaxX < table->InnerClipRect.Min.x)
SetScrollFromPosX(inner_window, column->MaxX - inner_window->Pos.x - neighbor_width_to_keep_visible, 1.0f);
else if (column->MaxX > table->InnerClipRect.Max.x)
SetScrollFromPosX(inner_window, column->MaxX - inner_window->Pos.x + neighbor_width_to_keep_visible, 1.0f);
}
// Apply resizing/dragging at the end of the frame
if (table->ResizedColumn != -1 && table->InstanceCurrent == table->InstanceInteracted)
{
ImGuiTableColumn* column = &table->Columns[table->ResizedColumn];
const float new_x2 = (g.IO.MousePos.x - g.ActiveIdClickOffset.x + TABLE_RESIZE_SEPARATOR_HALF_THICKNESS);
const float new_width = ImFloor(new_x2 - column->MinX - table->CellSpacingX1 - table->CellPaddingX * 2.0f);
table->ResizedColumnNextWidth = new_width;
}
// Layout in outer window
IM_ASSERT_USER_ERROR(inner_window->IDStack.back() == table->ID + table->InstanceCurrent, "Mismatching PushID/PopID!");
IM_ASSERT_USER_ERROR(outer_window->DC.ItemWidthStack.Size >= table->HostBackupItemWidthStackSize, "Too many PopItemWidth!");
PopID();
inner_window->WorkRect = table->HostBackupWorkRect;
inner_window->ParentWorkRect = table->HostBackupParentWorkRect;
inner_window->SkipItems = table->HostSkipItems;
outer_window->DC.CursorPos = table->OuterRect.Min;
outer_window->DC.ItemWidth = table->HostBackupItemWidth;
outer_window->DC.ItemWidthStack.Size = table->HostBackupItemWidthStackSize;
outer_window->DC.ColumnsOffset = table->HostBackupColumnsOffset;
const float outer_width = table->IsOuterRectAutoFitX ? table->WorkRect.GetWidth() : table->ColumnsAutoFitWidth;
if (inner_window != outer_window)
{
EndChild();
}
else
{
ImVec2 item_size(outer_width, table->OuterRect.GetHeight());
ItemSize(item_size);
}
// Override EndChild/ItemSize max extent with our own to enable auto-resize on the X axis when possible
// FIXME-TABLE: This can be improved (e.g. for Fixed columns we don't want to auto AutoFitWidth? or propagate window auto-fit to table?)
if (table->Flags & ImGuiTableFlags_ScrollX)
{
inner_window->DC.CursorMaxPos.x = max_pos_x; // Set contents width for scrolling
outer_window->DC.CursorMaxPos.x = ImMax(backup_outer_max_pos_x, backup_outer_cursor_pos_x + table->ColumnsTotalWidth + inner_window->ScrollbarSizes.x); // For auto-fit
}
else
{
outer_window->DC.CursorMaxPos.x = ImMax(backup_outer_max_pos_x, table->WorkRect.Min.x + outer_width); // For auto-fit
outer_window->DC.CursorPosPrevLine.x = table->WorkRect.Max.x; // For consistent reaction to SameLine() // FIXME: Should be a feature of layout/ItemAdd
}
// Save settings
if (table->IsSettingsDirty)
TableSaveSettings(table);
table->IsInitializing = false;
// Clear or restore current table, if any
IM_ASSERT(g.CurrentWindow == outer_window && g.CurrentTable == table);
g.CurrentTableStack.pop_back();
g.CurrentTable = g.CurrentTableStack.Size ? g.Tables.GetByIndex(g.CurrentTableStack.back().Index) : NULL;
outer_window->DC.CurrentTableIdx = g.CurrentTable ? g.Tables.GetIndex(g.CurrentTable) : -1;
}
// We use a default parameter of 'init_width_or_weight == -1',
// - with ImGuiTableColumnFlags_WidthFixed, width <= 0 --> init width == auto
// - with ImGuiTableColumnFlags_WidthFixed, width > 0 --> init width == manual
// - with ImGuiTableColumnFlags_WidthStretch, weight < 0 --> init weight == 1.0f
// - with ImGuiTableColumnFlags_WidthStretch, weight >= 0 --> init weight == custom
// Widths are specified _without_ CellPadding. So if you specify a width of 100.0f the column will be 100.0f+Padding*2.0f and you can fit a 100.0-wide item in it.
void ImGui::TableSetupColumn(const char* label, ImGuiTableColumnFlags flags, float init_width_or_weight, ImGuiID user_id)
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
IM_ASSERT(table != NULL && "Need to call TableSetupColumn() after BeginTable()!");
IM_ASSERT(table->IsLayoutLocked == false && "Need to call call TableSetupColumn() before first row!");
IM_ASSERT((flags & ImGuiTableColumnFlags_StatusMask_) == 0 && "Illegal to pass StatusMask values to TableSetupColumn()");
if (table->DeclColumnsCount >= table->ColumnsCount)
{
IM_ASSERT_USER_ERROR(table->DeclColumnsCount < table->ColumnsCount, "Called TableSetupColumn() too many times!");
return;
}
ImGuiTableColumn* column = &table->Columns[table->DeclColumnsCount];
table->DeclColumnsCount++;
// When passing a width automatically enforce WidthFixed policy
// (whereas TableSetupColumnFlags would default to WidthAutoResize)
if ((flags & ImGuiTableColumnFlags_WidthMask_) == 0)
if ((table->Flags & ImGuiTableFlags_ColumnsWidthFixed) && (init_width_or_weight > 0.0f))
flags |= ImGuiTableColumnFlags_WidthFixed;
TableSetupColumnFlags(table, column, flags);
column->UserID = user_id;
flags = column->Flags;
// Initialize defaults
if (flags & ImGuiTableColumnFlags_WidthStretch)
IM_ASSERT(init_width_or_weight != 0.0f && "Need to provide a valid weight!");
column->InitStretchWeightOrWidth = init_width_or_weight;
if (table->IsInitializing && column->WidthRequest < 0.0f && column->StretchWeight < 0.0f)
{
// Init width or weight
if ((flags & ImGuiTableColumnFlags_WidthFixed) && init_width_or_weight > 0.0f)
column->WidthRequest = init_width_or_weight;
if (flags & ImGuiTableColumnFlags_WidthStretch)
column->StretchWeight = (init_width_or_weight > 0.0f) ? init_width_or_weight : 1.0f;
// Disable auto-fit if an explicit width/weight has been specified
if (init_width_or_weight > 0.0f)
column->AutoFitQueue = 0x00;
}
if (table->IsInitializing)
{
// Init default visibility/sort state
if ((flags & ImGuiTableColumnFlags_DefaultHide) && (table->SettingsLoadedFlags & ImGuiTableFlags_Hideable) == 0)
column->IsEnabled = column->IsEnabledNextFrame = false;
if (flags & ImGuiTableColumnFlags_DefaultSort && (table->SettingsLoadedFlags & ImGuiTableFlags_Sortable) == 0)
{
column->SortOrder = 0; // Multiple columns using _DefaultSort will be reassigned unique SortOrder values when building the sort specs.
column->SortDirection = (column->Flags & ImGuiTableColumnFlags_PreferSortDescending) ? (ImS8)ImGuiSortDirection_Descending : (ImU8)(ImGuiSortDirection_Ascending);
}
}
// Store name (append with zero-terminator in contiguous buffer)
column->NameOffset = -1;
if (label != NULL && label[0] != 0)
{
column->NameOffset = (ImS16)table->ColumnsNames.size();
table->ColumnsNames.append(label, label + strlen(label) + 1);
}
}
// [Public]
void ImGui::TableSetupScrollFreeze(int columns, int rows)
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
IM_ASSERT(table != NULL && "Need to call TableSetupColumn() after BeginTable()!");
IM_ASSERT(table->IsLayoutLocked == false && "Need to call TableSetupColumn() before first row!");
IM_ASSERT(columns >= 0 && columns < IMGUI_TABLE_MAX_COLUMNS);
IM_ASSERT(rows >= 0 && rows < 128); // Arbitrary limit
table->FreezeColumnsRequest = (table->Flags & ImGuiTableFlags_ScrollX) ? (ImGuiTableColumnIdx)columns : 0;
table->FreezeColumnsCount = (table->InnerWindow->Scroll.x != 0.0f) ? table->FreezeColumnsRequest : 0;
table->FreezeRowsRequest = (table->Flags & ImGuiTableFlags_ScrollY) ? (ImGuiTableColumnIdx)rows : 0;
table->FreezeRowsCount = (table->InnerWindow->Scroll.y != 0.0f) ? table->FreezeRowsRequest : 0;
table->IsUnfrozen = (table->FreezeRowsCount == 0); // Make sure this is set before TableUpdateLayout() so ImGuiListClipper can benefit from it.b
}
int ImGui::TableGetColumnCount()
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
return table ? table->ColumnsCount : 0;
}
const char* ImGui::TableGetColumnName(int column_n)
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
if (!table)
return NULL;
if (column_n < 0)
column_n = table->CurrentColumn;
return TableGetColumnName(table, column_n);
}
const char* ImGui::TableGetColumnName(const ImGuiTable* table, int column_n)
{
if (table->IsLayoutLocked == false && column_n >= table->DeclColumnsCount)
return ""; // NameOffset is invalid at this point
const ImGuiTableColumn* column = &table->Columns[column_n];
if (column->NameOffset == -1)
return "";
return &table->ColumnsNames.Buf[column->NameOffset];
}
// We allow querying for an extra column in order to poll the IsHovered state of the right-most section
ImGuiTableColumnFlags ImGui::TableGetColumnFlags(int column_n)
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
if (!table)
return ImGuiTableColumnFlags_None;
if (column_n < 0)
column_n = table->CurrentColumn;
if (column_n == table->ColumnsCount)
return (table->HoveredColumnBody == column_n) ? ImGuiTableColumnFlags_IsHovered : ImGuiTableColumnFlags_None;
return table->Columns[column_n].Flags;
}
// Return the cell rectangle based on currently known height.
// - Important: we generally don't know our row height until the end of the row, so Max.y will be incorrect in many situations.
// The only case where this is correct is if we provided a min_row_height to TableNextRow() and don't go below it.
// - Important: if ImGuiTableFlags_PadOuterX is set but ImGuiTableFlags_PadInnerX is not set, the outer-most left and right
// columns report a small offset so their CellBgRect can extend up to the outer border.
ImRect ImGui::TableGetCellBgRect(const ImGuiTable* table, int column_n)
{
const ImGuiTableColumn* column = &table->Columns[column_n];
float x1 = column->MinX;
float x2 = column->MaxX;
if (column->PrevEnabledColumn == -1)
x1 -= table->CellSpacingX1;
if (column->NextEnabledColumn == -1)
x2 += table->CellSpacingX2;
return ImRect(x1, table->RowPosY1, x2, table->RowPosY2);
}
// Return the resizing ID for the right-side of the given column.
ImGuiID ImGui::TableGetColumnResizeID(const ImGuiTable* table, int column_n, int instance_no)
{
IM_ASSERT(column_n < table->ColumnsCount);
ImGuiID id = table->ID + 1 + (instance_no * table->ColumnsCount) + column_n;
return id;
}
// Return -1 when table is not hovered. return columns_count if the unused space at the right of visible columns is hovered.
int ImGui::TableGetHoveredColumn()
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
if (!table)
return -1;
return (int)table->HoveredColumnBody;
}
void ImGui::TableSetBgColor(ImGuiTableBgTarget bg_target, ImU32 color, int column_n)
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
IM_ASSERT(bg_target != ImGuiTableBgTarget_None);
if (color == IM_COL32_DISABLE)
color = 0;
// We cannot draw neither the cell or row background immediately as we don't know the row height at this point in time.
switch (bg_target)
{
case ImGuiTableBgTarget_CellBg:
{
if (table->RowPosY1 > table->InnerClipRect.Max.y) // Discard
return;
if (column_n == -1)
column_n = table->CurrentColumn;
if ((table->VisibleMaskByIndex & ((ImU64)1 << column_n)) == 0)
return;
if (table->RowCellDataCurrent < 0 || table->RowCellData[table->RowCellDataCurrent].Column != column_n)
table->RowCellDataCurrent++;
ImGuiTableCellData* cell_data = &table->RowCellData[table->RowCellDataCurrent];
cell_data->BgColor = color;
cell_data->Column = (ImGuiTableColumnIdx)column_n;
break;
}
case ImGuiTableBgTarget_RowBg0:
case ImGuiTableBgTarget_RowBg1:
{
if (table->RowPosY1 > table->InnerClipRect.Max.y) // Discard
return;
IM_ASSERT(column_n == -1);
int bg_idx = (bg_target == ImGuiTableBgTarget_RowBg1) ? 1 : 0;
table->RowBgColor[bg_idx] = color;
break;
}
default:
IM_ASSERT(0);
}
}
//-------------------------------------------------------------------------
// [SECTION] Tables: Row changes
//-------------------------------------------------------------------------
// - TableGetRowIndex()
// - TableNextRow()
// - TableBeginRow() [Internal]
// - TableEndRow() [Internal]
//-------------------------------------------------------------------------
// [Public] Note: for row coloring we use ->RowBgColorCounter which is the same value without counting header rows
int ImGui::TableGetRowIndex()
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
if (!table)
return 0;
return table->CurrentRow;
}
// [Public] Starts into the first cell of a new row
void ImGui::TableNextRow(ImGuiTableRowFlags row_flags, float row_min_height)
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
if (!table->IsLayoutLocked)
TableUpdateLayout(table);
if (table->IsInsideRow)
TableEndRow(table);
table->LastRowFlags = table->RowFlags;
table->RowFlags = row_flags;
table->RowMinHeight = row_min_height;
TableBeginRow(table);
// We honor min_row_height requested by user, but cannot guarantee per-row maximum height,
// because that would essentially require a unique clipping rectangle per-cell.
table->RowPosY2 += table->CellPaddingY * 2.0f;
table->RowPosY2 = ImMax(table->RowPosY2, table->RowPosY1 + row_min_height);
// Disable output until user calls TableNextColumn()
table->InnerWindow->SkipItems = true;
}
// [Internal] Called by TableNextRow()
void ImGui::TableBeginRow(ImGuiTable* table)
{
ImGuiWindow* window = table->InnerWindow;
IM_ASSERT(!table->IsInsideRow);
// New row
table->CurrentRow++;
table->CurrentColumn = -1;
table->RowBgColor[0] = table->RowBgColor[1] = IM_COL32_DISABLE;
table->RowCellDataCurrent = -1;
table->IsInsideRow = true;
// Begin frozen rows
float next_y1 = table->RowPosY2;
if (table->CurrentRow == 0 && table->FreezeRowsCount > 0)
next_y1 = window->DC.CursorPos.y = table->OuterRect.Min.y;
table->RowPosY1 = table->RowPosY2 = next_y1;
table->RowTextBaseline = 0.0f;
table->RowIndentOffsetX = window->DC.Indent.x - table->HostIndentX; // Lock indent
window->DC.PrevLineTextBaseOffset = 0.0f;
window->DC.CursorMaxPos.y = next_y1;
// Making the header BG color non-transparent will allow us to overlay it multiple times when handling smooth dragging.
if (table->RowFlags & ImGuiTableRowFlags_Headers)
{
TableSetBgColor(ImGuiTableBgTarget_RowBg0, GetColorU32(ImGuiCol_TableHeaderBg));
if (table->CurrentRow == 0)
table->IsUsingHeaders = true;
}
}
// [Internal] Called by TableNextRow()
void ImGui::TableEndRow(ImGuiTable* table)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
IM_ASSERT(window == table->InnerWindow);
IM_ASSERT(table->IsInsideRow);
if (table->CurrentColumn != -1)
TableEndCell(table);
// Position cursor at the bottom of our row so it can be used for e.g. clipping calculation. However it is
// likely that the next call to TableBeginCell() will reposition the cursor to take account of vertical padding.
window->DC.CursorPos.y = table->RowPosY2;
// Row background fill
const float bg_y1 = table->RowPosY1;
const float bg_y2 = table->RowPosY2;
const bool unfreeze_rows_actual = (table->CurrentRow + 1 == table->FreezeRowsCount);
const bool unfreeze_rows_request = (table->CurrentRow + 1 == table->FreezeRowsRequest);
if (table->CurrentRow == 0)
table->LastFirstRowHeight = bg_y2 - bg_y1;
const bool is_visible = (bg_y2 >= table->InnerClipRect.Min.y && bg_y1 <= table->InnerClipRect.Max.y);
if (is_visible)
{
// Decide of background color for the row
ImU32 bg_col0 = 0;
ImU32 bg_col1 = 0;
if (table->RowBgColor[0] != IM_COL32_DISABLE)
bg_col0 = table->RowBgColor[0];
else if (table->Flags & ImGuiTableFlags_RowBg)
bg_col0 = GetColorU32((table->RowBgColorCounter & 1) ? ImGuiCol_TableRowBgAlt : ImGuiCol_TableRowBg);
if (table->RowBgColor[1] != IM_COL32_DISABLE)
bg_col1 = table->RowBgColor[1];
// Decide of top border color
ImU32 border_col = 0;
const float border_size = TABLE_BORDER_SIZE;
if (table->CurrentRow > 0 || table->InnerWindow == table->OuterWindow)
if (table->Flags & ImGuiTableFlags_BordersInnerH)
border_col = (table->LastRowFlags & ImGuiTableRowFlags_Headers) ? table->BorderColorStrong : table->BorderColorLight;
const bool draw_cell_bg_color = table->RowCellDataCurrent >= 0;
const bool draw_strong_bottom_border = unfreeze_rows_actual;
if ((bg_col0 | bg_col1 | border_col) != 0 || draw_strong_bottom_border || draw_cell_bg_color)
{
// In theory we could call SetWindowClipRectBeforeSetChannel() but since we know TableEndRow() is
// always followed by a change of clipping rectangle we perform the smallest overwrite possible here.
if ((table->Flags & ImGuiTableFlags_NoClip) == 0)
window->DrawList->_CmdHeader.ClipRect = table->Bg0ClipRectForDrawCmd.ToVec4();
table->DrawSplitter.SetCurrentChannel(window->DrawList, TABLE_DRAW_CHANNEL_BG0);
}
// Draw row background
// We soft/cpu clip this so all backgrounds and borders can share the same clipping rectangle
if (bg_col0 || bg_col1)
{
ImRect row_rect(table->WorkRect.Min.x, bg_y1, table->WorkRect.Max.x, bg_y2);
row_rect.ClipWith(table->BgClipRect);
if (bg_col0 != 0 && row_rect.Min.y < row_rect.Max.y)
window->DrawList->AddRectFilled(row_rect.Min, row_rect.Max, bg_col0);
if (bg_col1 != 0 && row_rect.Min.y < row_rect.Max.y)
window->DrawList->AddRectFilled(row_rect.Min, row_rect.Max, bg_col1);
}
// Draw cell background color
if (draw_cell_bg_color)
{
ImGuiTableCellData* cell_data_end = &table->RowCellData[table->RowCellDataCurrent];
for (ImGuiTableCellData* cell_data = &table->RowCellData[0]; cell_data <= cell_data_end; cell_data++)
{
const ImGuiTableColumn* column = &table->Columns[cell_data->Column];
ImRect cell_bg_rect = TableGetCellBgRect(table, cell_data->Column);
cell_bg_rect.ClipWith(table->BgClipRect);
cell_bg_rect.Min.x = ImMax(cell_bg_rect.Min.x, column->ClipRect.Min.x); // So that first column after frozen one gets clipped
cell_bg_rect.Max.x = ImMin(cell_bg_rect.Max.x, column->MaxX);
window->DrawList->AddRectFilled(cell_bg_rect.Min, cell_bg_rect.Max, cell_data->BgColor);
}
}
// Draw top border
if (border_col && bg_y1 >= table->BgClipRect.Min.y && bg_y1 < table->BgClipRect.Max.y)
window->DrawList->AddLine(ImVec2(table->BorderX1, bg_y1), ImVec2(table->BorderX2, bg_y1), border_col, border_size);
// Draw bottom border at the row unfreezing mark (always strong)
if (draw_strong_bottom_border && bg_y2 >= table->BgClipRect.Min.y && bg_y2 < table->BgClipRect.Max.y)
window->DrawList->AddLine(ImVec2(table->BorderX1, bg_y2), ImVec2(table->BorderX2, bg_y2), table->BorderColorStrong, border_size);
}
// End frozen rows (when we are past the last frozen row line, teleport cursor and alter clipping rectangle)
// We need to do that in TableEndRow() instead of TableBeginRow() so the list clipper can mark end of row and
// get the new cursor position.
if (unfreeze_rows_request)
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
{
ImGuiTableColumn* column = &table->Columns[column_n];
column->NavLayerCurrent = (ImS8)((column_n < table->FreezeColumnsCount) ? ImGuiNavLayer_Menu : ImGuiNavLayer_Main);
}
if (unfreeze_rows_actual)
{
IM_ASSERT(table->IsUnfrozen == false);
table->IsUnfrozen = true;
// BgClipRect starts as table->InnerClipRect, reduce it now and make BgClipRectForDrawCmd == BgClipRect
float y0 = ImMax(table->RowPosY2 + 1, window->InnerClipRect.Min.y);
table->BgClipRect.Min.y = table->Bg2ClipRectForDrawCmd.Min.y = ImMin(y0, window->InnerClipRect.Max.y);
table->BgClipRect.Max.y = table->Bg2ClipRectForDrawCmd.Max.y = window->InnerClipRect.Max.y;
table->Bg2DrawChannelCurrent = table->Bg2DrawChannelUnfrozen;
IM_ASSERT(table->Bg2ClipRectForDrawCmd.Min.y <= table->Bg2ClipRectForDrawCmd.Max.y);
float row_height = table->RowPosY2 - table->RowPosY1;
table->RowPosY2 = window->DC.CursorPos.y = table->WorkRect.Min.y + table->RowPosY2 - table->OuterRect.Min.y;
table->RowPosY1 = table->RowPosY2 - row_height;
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
{
ImGuiTableColumn* column = &table->Columns[column_n];
column->DrawChannelCurrent = column->DrawChannelUnfrozen;
column->ClipRect.Min.y = table->Bg2ClipRectForDrawCmd.Min.y;
}
// Update cliprect ahead of TableBeginCell() so clipper can access to new ClipRect->Min.y
SetWindowClipRectBeforeSetChannel(window, table->Columns[0].ClipRect);
table->DrawSplitter.SetCurrentChannel(window->DrawList, table->Columns[0].DrawChannelCurrent);
}
if (!(table->RowFlags & ImGuiTableRowFlags_Headers))
table->RowBgColorCounter++;
table->IsInsideRow = false;
}
//-------------------------------------------------------------------------
// [SECTION] Tables: Columns changes
//-------------------------------------------------------------------------
// - TableGetColumnIndex()
// - TableSetColumnIndex()
// - TableNextColumn()
// - TableBeginCell() [Internal]
// - TableEndCell() [Internal]
//-------------------------------------------------------------------------
int ImGui::TableGetColumnIndex()
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
if (!table)
return 0;
return table->CurrentColumn;
}
// [Public] Append into a specific column
bool ImGui::TableSetColumnIndex(int column_n)
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
if (!table)
return false;
if (table->CurrentColumn != column_n)
{
if (table->CurrentColumn != -1)
TableEndCell(table);
IM_ASSERT(column_n >= 0 && table->ColumnsCount);
TableBeginCell(table, column_n);
}
// Return whether the column is visible. User may choose to skip submitting items based on this return value,
// however they shouldn't skip submitting for columns that may have the tallest contribution to row height.
return (table->RequestOutputMaskByIndex & ((ImU64)1 << column_n)) != 0;
}
// [Public] Append into the next column, wrap and create a new row when already on last column
bool ImGui::TableNextColumn()
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
if (!table)
return false;
if (table->IsInsideRow && table->CurrentColumn + 1 < table->ColumnsCount)
{
if (table->CurrentColumn != -1)
TableEndCell(table);
TableBeginCell(table, table->CurrentColumn + 1);
}
else
{
TableNextRow();
TableBeginCell(table, 0);
}
// Return whether the column is visible. User may choose to skip submitting items based on this return value,
// however they shouldn't skip submitting for columns that may have the tallest contribution to row height.
int column_n = table->CurrentColumn;
return (table->RequestOutputMaskByIndex & ((ImU64)1 << column_n)) != 0;
}
// [Internal] Called by TableSetColumnIndex()/TableNextColumn()
// This is called very frequently, so we need to be mindful of unnecessary overhead.
// FIXME-TABLE FIXME-OPT: Could probably shortcut some things for non-active or clipped columns.
void ImGui::TableBeginCell(ImGuiTable* table, int column_n)
{
ImGuiTableColumn* column = &table->Columns[column_n];
ImGuiWindow* window = table->InnerWindow;
table->CurrentColumn = column_n;
// Start position is roughly ~~ CellRect.Min + CellPadding + Indent
float start_x = column->WorkMinX;
if (column->Flags & ImGuiTableColumnFlags_IndentEnable)
start_x += table->RowIndentOffsetX; // ~~ += window.DC.Indent.x - table->HostIndentX, except we locked it for the row.
window->DC.CursorPos.x = start_x;
window->DC.CursorPos.y = table->RowPosY1 + table->CellPaddingY;
window->DC.CursorMaxPos.x = window->DC.CursorPos.x;
window->DC.ColumnsOffset.x = start_x - window->Pos.x - window->DC.Indent.x; // FIXME-WORKRECT
window->DC.CurrLineTextBaseOffset = table->RowTextBaseline;
window->DC.NavLayerCurrent = (ImGuiNavLayer)column->NavLayerCurrent;
window->WorkRect.Min.y = window->DC.CursorPos.y;
window->WorkRect.Min.x = column->WorkMinX;
window->WorkRect.Max.x = column->WorkMaxX;
window->DC.ItemWidth = column->ItemWidth;
// To allow ImGuiListClipper to function we propagate our row height
if (!column->IsEnabled)
window->DC.CursorPos.y = ImMax(window->DC.CursorPos.y, table->RowPosY2);
window->SkipItems = column->IsSkipItems;
if (column->IsSkipItems)
{
window->DC.LastItemId = 0;
window->DC.LastItemStatusFlags = 0;
}
if (table->Flags & ImGuiTableFlags_NoClip)
{
// FIXME: if we end up drawing all borders/bg in EndTable, could remove this and just assert that channel hasn't changed.
table->DrawSplitter.SetCurrentChannel(window->DrawList, TABLE_DRAW_CHANNEL_NOCLIP);
//IM_ASSERT(table->DrawSplitter._Current == TABLE_DRAW_CHANNEL_NOCLIP);
}
else
{
// FIXME-TABLE: Could avoid this if draw channel is dummy channel?
SetWindowClipRectBeforeSetChannel(window, column->ClipRect);
table->DrawSplitter.SetCurrentChannel(window->DrawList, column->DrawChannelCurrent);
}
}
// [Internal] Called by TableNextRow()/TableSetColumnIndex()/TableNextColumn()
void ImGui::TableEndCell(ImGuiTable* table)
{
ImGuiTableColumn* column = &table->Columns[table->CurrentColumn];
ImGuiWindow* window = table->InnerWindow;
// Report maximum position so we can infer content size per column.
float* p_max_pos_x;
if (table->RowFlags & ImGuiTableRowFlags_Headers)
p_max_pos_x = &column->ContentMaxXHeadersUsed; // Useful in case user submit contents in header row that is not a TableHeader() call
else
p_max_pos_x = table->IsUnfrozen ? &column->ContentMaxXUnfrozen : &column->ContentMaxXFrozen;
*p_max_pos_x = ImMax(*p_max_pos_x, window->DC.CursorMaxPos.x);
table->RowPosY2 = ImMax(table->RowPosY2, window->DC.CursorMaxPos.y + table->CellPaddingY);
column->ItemWidth = window->DC.ItemWidth;
// Propagate text baseline for the entire row
// FIXME-TABLE: Here we propagate text baseline from the last line of the cell.. instead of the first one.
table->RowTextBaseline = ImMax(table->RowTextBaseline, window->DC.PrevLineTextBaseOffset);
}
//-------------------------------------------------------------------------
// [SECTION] Tables: Columns width management
//-------------------------------------------------------------------------
// - TableGetMinColumnWidth() [Internal]
// - TableGetMaxColumnWidth() [Internal]
// - TableSetColumnWidth()
// - TableSetColumnWidthAutoSingle() [Internal]
// - TableSetColumnWidthAutoAll() [Internal]
// - TableUpdateColumnsWeightFromWidth() [Internal]
//-------------------------------------------------------------------------
// Minimum column content width (without padding)
float ImGui::TableGetMinColumnWidth()
{
ImGuiContext& g = *GImGui;
//return g.Style.ColumnsMinSpacing; // FIXME-TABLE
return g.Style.FramePadding.x * 1.0f;
}
// Maximum column content width given current layout. Use column->MinX so this value on a per-column basis.
float ImGui::TableGetMaxColumnWidth(const ImGuiTable* table, int column_n)
{
const ImGuiTableColumn* column = &table->Columns[column_n];
float max_width = FLT_MAX;
const float min_column_distance = TableGetMinColumnWidth() + table->CellPaddingX * 2.0f + table->CellSpacingX1 + table->CellSpacingX2;
if (table->Flags & ImGuiTableFlags_ScrollX)
{
// Frozen columns can't reach beyond visible width else scrolling will naturally break.
if (column->DisplayOrder < table->FreezeColumnsRequest)
{
max_width = (table->InnerClipRect.Max.x - (table->FreezeColumnsRequest - column->DisplayOrder) * min_column_distance) - column->MinX;
max_width = max_width - table->OuterPaddingX - table->CellPaddingX - table->CellSpacingX2;
}
}
else if ((table->Flags & ImGuiTableFlags_NoKeepColumnsVisible) == 0)
{
// If horizontal scrolling if disabled, we apply a final lossless shrinking of columns in order to make
// sure they are all visible. Because of this we also know that all of the columns will always fit in
// table->WorkRect and therefore in table->InnerRect (because ScrollX is off)
// FIXME-TABLE: This is solved incorrectly but also quite a difficult problem to fix as we also want ClipRect width to match.
// See "table_width_distrib" and "table_width_keep_visible" tests
max_width = table->WorkRect.Max.x - (table->ColumnsEnabledCount - column->IndexWithinEnabledSet - 1) * min_column_distance - column->MinX;
//max_width -= table->CellSpacingX1;
max_width -= table->CellSpacingX2;
max_width -= table->CellPaddingX * 2.0f;
max_width -= table->OuterPaddingX;
}
return max_width;
}
// 'width' = inner column width, without padding
void ImGui::TableSetColumnWidth(int column_n, float width)
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
IM_ASSERT(table != NULL && table->IsLayoutLocked == false);
IM_ASSERT(column_n >= 0 && column_n < table->ColumnsCount);
ImGuiTableColumn* column_0 = &table->Columns[column_n];
float column_0_width = width;
// Apply constraints early
// Compare both requested and actual given width to avoid overwriting requested width when column is stuck (minimum size, bounded)
const float min_width = TableGetMinColumnWidth();
const float max_width = TableGetMaxColumnWidth(table, column_n);
column_0_width = ImClamp(column_0_width, min_width, max_width);
if (column_0->WidthGiven == column_0_width || column_0->WidthRequest == column_0_width)
return;
//IMGUI_DEBUG_LOG("TableSetColumnWidth(%d, %.1f->%.1f)\n", column_0_idx, column_0->WidthGiven, column_0_width);
ImGuiTableColumn* column_1 = (column_0->NextEnabledColumn != -1) ? &table->Columns[column_0->NextEnabledColumn] : NULL;
// In this surprisingly not simple because of how we support mixing Fixed and multiple Stretch columns.
// - All fixed: easy.
// - All stretch: easy.
// - One or more fixed + one stretch: easy.
// - One or more fixed + more than one stretch: tricky.
// Qt when manual resize is enabled only support a single _trailing_ stretch column.
// When forwarding resize from Wn| to Fn+1| we need to be considerate of the _NoResize flag on Fn+1.
// FIXME-TABLE: Find a way to rewrite all of this so interactions feel more consistent for the user.
// Scenarios:
// - F1 F2 F3 resize from F1| or F2| --> ok: alter ->WidthRequested of Fixed column. Subsequent columns will be offset.
// - F1 F2 F3 resize from F3| --> ok: alter ->WidthRequested of Fixed column. If active, ScrollX extent can be altered.
// - F1 F2 W3 resize from F1| or F2| --> ok: alter ->WidthRequested of Fixed column. If active, ScrollX extent can be altered, but it doesn't make much sense as the Stretch column will always be minimal size.
// - F1 F2 W3 resize from W3| --> ok: no-op (disabled by Resize Rule 1)
// - W1 W2 W3 resize from W1| or W2| --> ok
// - W1 W2 W3 resize from W3| --> ok: no-op (disabled by Resize Rule 1)
// - W1 F2 F3 resize from F3| --> ok: no-op (disabled by Resize Rule 1)
// - W1 F2 resize from F2| --> ok: no-op (disabled by Resize Rule 1)
// - W1 W2 F3 resize from W1| or W2| --> ok
// - W1 F2 W3 resize from W1| or F2| --> ok
// - F1 W2 F3 resize from W2| --> ok
// - F1 W3 F2 resize from W3| --> ok
// - W1 F2 F3 resize from W1| --> ok: equivalent to resizing |F2. F3 will not move.
// - W1 F2 F3 resize from F2| --> ok
// All resizes from a Wx columns are locking other columns.
// Possible improvements:
// - W1 W2 W3 resize W1| --> to not be stuck, both W2 and W3 would stretch down. Seems possible to fix. Would be most beneficial to simplify resize of all-weighted columns.
// - W3 F1 F2 resize W3| --> to not be stuck past F1|, both F1 and F2 would need to stretch down, which would be lossy or ambiguous. Seems hard to fix.
// [Resize Rule 1] Can't resize from right of right-most visible column if there is any Stretch column. Implemented in TableUpdateLayout().
// If we have all Fixed columns OR resizing a Fixed column that doesn't come after a Stretch one, we can do an offsetting resize.
// This is the preferred resize path
if (column_0->Flags & ImGuiTableColumnFlags_WidthFixed)
if (!column_1 || table->LeftMostStretchedColumn == -1 || table->Columns[table->LeftMostStretchedColumn].DisplayOrder >= column_0->DisplayOrder)
{
column_0->WidthRequest = column_0_width;
table->IsSettingsDirty = true;
return;
}
// We can also use previous column if there's no next one (this is used when doing an auto-fit on the right-most stretch column)
if (column_1 == NULL)
column_1 = (column_0->PrevEnabledColumn != -1) ? &table->Columns[column_0->PrevEnabledColumn] : NULL;
if (column_1 == NULL)
return;
// Resizing from right-side of a Stretch column before a Fixed column forward sizing to left-side of fixed column.
// (old_a + old_b == new_a + new_b) --> (new_a == old_a + old_b - new_b)
float column_1_width = ImMax(column_1->WidthRequest - (column_0_width - column_0->WidthRequest), min_width);
column_0_width = column_0->WidthRequest + column_1->WidthRequest - column_1_width;
column_0->WidthRequest = column_0_width;
column_1->WidthRequest = column_1_width;
if ((column_0->Flags | column_1->Flags) & ImGuiTableColumnFlags_WidthStretch)
TableUpdateColumnsWeightFromWidth(table);
table->IsSettingsDirty = true;
}
// Disable clipping then auto-fit, will take 2 frames
// (we don't take a shortcut for unclipped columns to reduce inconsistencies when e.g. resizing multiple columns)
void ImGui::TableSetColumnWidthAutoSingle(ImGuiTable* table, int column_n)
{
// Single auto width uses auto-fit
ImGuiTableColumn* column = &table->Columns[column_n];
if (!column->IsEnabled)
return;
column->CannotSkipItemsQueue = (1 << 0);
if (column->Flags & ImGuiTableColumnFlags_WidthStretch)
table->AutoFitSingleStretchColumn = (ImGuiTableColumnIdx)column_n;
else
column->AutoFitQueue = (1 << 1);
}
void ImGui::TableSetColumnWidthAutoAll(ImGuiTable* table)
{
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
{
ImGuiTableColumn* column = &table->Columns[column_n];
if (!column->IsEnabled && !(column->Flags & ImGuiTableColumnFlags_WidthStretch)) // Can reset weight of hidden stretch column
continue;
column->CannotSkipItemsQueue = (1 << 0);
column->AutoFitQueue = (1 << 1);
}
}
void ImGui::TableUpdateColumnsWeightFromWidth(ImGuiTable* table)
{
IM_ASSERT(table->LeftMostStretchedColumn != -1 && table->RightMostStretchedColumn != -1);
// Measure existing quantity
float visible_weight = 0.0f;
float visible_width = 0.0f;
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
{
ImGuiTableColumn* column = &table->Columns[column_n];
if (!column->IsEnabled || !(column->Flags & ImGuiTableColumnFlags_WidthStretch))
continue;
IM_ASSERT(column->StretchWeight > 0.0f);
visible_weight += column->StretchWeight;
visible_width += column->WidthRequest;
}
IM_ASSERT(visible_weight > 0.0f && visible_width > 0.0f);
// Apply new weights
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
{
ImGuiTableColumn* column = &table->Columns[column_n];
if (!column->IsEnabled || !(column->Flags & ImGuiTableColumnFlags_WidthStretch))
continue;
column->StretchWeight = (column->WidthRequest / visible_width) * visible_weight;
IM_ASSERT(column->StretchWeight > 0.0f);
}
}
//-------------------------------------------------------------------------
// [SECTION] Tables: Drawing
//-------------------------------------------------------------------------
// - TablePushBackgroundChannel() [Internal]
// - TablePopBackgroundChannel() [Internal]
// - TableSetupDrawChannels() [Internal]
// - TableMergeDrawChannels() [Internal]
// - TableDrawBorders() [Internal]
//-------------------------------------------------------------------------
// Bg2 is used by Selectable (and possibly other widgets) to render to the background.
// Unlike our Bg0/1 channel which we uses for RowBg/CellBg/Borders and where we guarantee all shapes to be CPU-clipped, the Bg2 channel being widgets-facing will rely on regular ClipRect.
void ImGui::TablePushBackgroundChannel()
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
ImGuiTable* table = g.CurrentTable;
// Optimization: avoid SetCurrentChannel() + PushClipRect()
table->HostBackupInnerClipRect = window->ClipRect;
SetWindowClipRectBeforeSetChannel(window, table->Bg2ClipRectForDrawCmd);
table->DrawSplitter.SetCurrentChannel(window->DrawList, table->Bg2DrawChannelCurrent);
}
void ImGui::TablePopBackgroundChannel()
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
ImGuiTable* table = g.CurrentTable;
ImGuiTableColumn* column = &table->Columns[table->CurrentColumn];
// Optimization: avoid PopClipRect() + SetCurrentChannel()
SetWindowClipRectBeforeSetChannel(window, table->HostBackupInnerClipRect);
table->DrawSplitter.SetCurrentChannel(window->DrawList, column->DrawChannelCurrent);
}
// Allocate draw channels. Called by TableUpdateLayout()
// - We allocate them following storage order instead of display order so reordering columns won't needlessly
// increase overall dormant memory cost.
// - We isolate headers draw commands in their own channels instead of just altering clip rects.
// This is in order to facilitate merging of draw commands.
// - After crossing FreezeRowsCount, all columns see their current draw channel changed to a second set of channels.
// - We only use the dummy draw channel so we can push a null clipping rectangle into it without affecting other
// channels, while simplifying per-row/per-cell overhead. It will be empty and discarded when merged.
// - We allocate 1 or 2 background draw channels. This is because we know TablePushBackgroundChannel() is only used for
// horizontal spanning. If we allowed vertical spanning we'd need one background draw channel per merge group (1-4).
// Draw channel allocation (before merging):
// - NoClip --> 2+D+1 channels: bg0/1 + bg2 + foreground (same clip rect == always 1 draw call)
// - Clip --> 2+D+N channels
// - FreezeRows --> 2+D+N*2 (unless scrolling value is zero)
// - FreezeRows || FreezeColunns --> 3+D+N*2 (unless scrolling value is zero)
// Where D is 1 if any column is clipped or hidden (dummy channel) otherwise 0.
void ImGui::TableSetupDrawChannels(ImGuiTable* table)
{
const int freeze_row_multiplier = (table->FreezeRowsCount > 0) ? 2 : 1;
const int channels_for_row = (table->Flags & ImGuiTableFlags_NoClip) ? 1 : table->ColumnsEnabledCount;
const int channels_for_bg = 1 + 1 * freeze_row_multiplier;
const int channels_for_dummy = (table->ColumnsEnabledCount < table->ColumnsCount || table->VisibleMaskByIndex != table->EnabledMaskByIndex) ? +1 : 0;
const int channels_total = channels_for_bg + (channels_for_row * freeze_row_multiplier) + channels_for_dummy;
table->DrawSplitter.Split(table->InnerWindow->DrawList, channels_total);
table->DummyDrawChannel = (ImGuiTableDrawChannelIdx)((channels_for_dummy > 0) ? channels_total - 1 : -1);
table->Bg2DrawChannelCurrent = TABLE_DRAW_CHANNEL_BG2_FROZEN;
table->Bg2DrawChannelUnfrozen = (ImGuiTableDrawChannelIdx)((table->FreezeRowsCount > 0) ? 2 + channels_for_row : TABLE_DRAW_CHANNEL_BG2_FROZEN);
int draw_channel_current = 2;
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
{
ImGuiTableColumn* column = &table->Columns[column_n];
if (column->IsVisibleX && column->IsVisibleY)
{
column->DrawChannelFrozen = (ImGuiTableDrawChannelIdx)(draw_channel_current);
column->DrawChannelUnfrozen = (ImGuiTableDrawChannelIdx)(draw_channel_current + (table->FreezeRowsCount > 0 ? channels_for_row + 1 : 0));
if (!(table->Flags & ImGuiTableFlags_NoClip))
draw_channel_current++;
}
else
{
column->DrawChannelFrozen = column->DrawChannelUnfrozen = table->DummyDrawChannel;
}
column->DrawChannelCurrent = column->DrawChannelFrozen;
}
// Initial draw cmd starts with a BgClipRect that matches the one of its host, to facilitate merge draw commands by default.
// All our cell highlight are manually clipped with BgClipRect. When unfreezing it will be made smaller to fit scrolling rect.
// (This technically isn't part of setting up draw channels, but is reasonably related to be done here)
table->BgClipRect = table->InnerClipRect;
table->Bg0ClipRectForDrawCmd = table->OuterWindow->ClipRect;
table->Bg2ClipRectForDrawCmd = table->HostClipRect;
IM_ASSERT(table->BgClipRect.Min.y <= table->BgClipRect.Max.y);
}
// This function reorder draw channels based on matching clip rectangle, to facilitate merging them. Called by EndTable().
// For simplicity we call it TableMergeDrawChannels() but in fact it only reorder channels + overwrite ClipRect,
// actual merging is done by table->DrawSplitter.Merge() which is called right after TableMergeDrawChannels().
//
// Columns where the contents didn't stray off their local clip rectangle can be merged. To achieve
// this we merge their clip rect and make them contiguous in the channel list, so they can be merged
// by the call to DrawSplitter.Merge() following to the call to this function.
// We reorder draw commands by arranging them into a maximum of 4 distinct groups:
//
// 1 group: 2 groups: 2 groups: 4 groups:
// [ 0. ] no freeze [ 0. ] row freeze [ 01 ] col freeze [ 01 ] row+col freeze
// [ .. ] or no scroll [ 2. ] and v-scroll [ .. ] and h-scroll [ 23 ] and v+h-scroll
//
// Each column itself can use 1 channel (row freeze disabled) or 2 channels (row freeze enabled).
// When the contents of a column didn't stray off its limit, we move its channels into the corresponding group
// based on its position (within frozen rows/columns groups or not).
// At the end of the operation our 1-4 groups will each have a ImDrawCmd using the same ClipRect.
// This function assume that each column are pointing to a distinct draw channel,
// otherwise merge_group->ChannelsCount will not match set bit count of merge_group->ChannelsMask.
//
// Column channels will not be merged into one of the 1-4 groups in the following cases:
// - The contents stray off its clipping rectangle (we only compare the MaxX value, not the MinX value).
// Direct ImDrawList calls won't be taken into account by default, if you use them make sure the ImGui:: bounds
// matches, by e.g. calling SetCursorScreenPos().
// - The channel uses more than one draw command itself. We drop all our attempt at merging stuff here..
// we could do better but it's going to be rare and probably not worth the hassle.
// Columns for which the draw channel(s) haven't been merged with other will use their own ImDrawCmd.
//
// This function is particularly tricky to understand.. take a breath.
void ImGui::TableMergeDrawChannels(ImGuiTable* table)
{
ImGuiContext& g = *GImGui;
ImDrawListSplitter* splitter = &table->DrawSplitter;
const bool has_freeze_v = (table->FreezeRowsCount > 0);
const bool has_freeze_h = (table->FreezeColumnsCount > 0);
IM_ASSERT(splitter->_Current == 0);
// Track which groups we are going to attempt to merge, and which channels goes into each group.
struct MergeGroup
{
ImRect ClipRect;
int ChannelsCount;
ImBitArray<IMGUI_TABLE_MAX_DRAW_CHANNELS> ChannelsMask;
};
int merge_group_mask = 0x00;
MergeGroup merge_groups[4];
memset(merge_groups, 0, sizeof(merge_groups));
// 1. Scan channels and take note of those which can be merged
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
{
if ((table->VisibleMaskByIndex & ((ImU64)1 << column_n)) == 0)
continue;
ImGuiTableColumn* column = &table->Columns[column_n];
const int merge_group_sub_count = has_freeze_v ? 2 : 1;
for (int merge_group_sub_n = 0; merge_group_sub_n < merge_group_sub_count; merge_group_sub_n++)
{
const int channel_no = (merge_group_sub_n == 0) ? column->DrawChannelFrozen : column->DrawChannelUnfrozen;
// Don't attempt to merge if there are multiple draw calls within the column
ImDrawChannel* src_channel = &splitter->_Channels[channel_no];
if (src_channel->_CmdBuffer.Size > 0 && src_channel->_CmdBuffer.back().ElemCount == 0)
src_channel->_CmdBuffer.pop_back();
if (src_channel->_CmdBuffer.Size != 1)
continue;
// Find out the width of this merge group and check if it will fit in our column
// (note that we assume that rendering didn't stray on the left direction. we should need a CursorMinPos to detect it)
if (!(column->Flags & ImGuiTableColumnFlags_NoClip))
{
float content_max_x;
if (!has_freeze_v)
content_max_x = ImMax(column->ContentMaxXUnfrozen, column->ContentMaxXHeadersUsed); // No row freeze
else if (merge_group_sub_n == 0)
content_max_x = ImMax(column->ContentMaxXFrozen, column->ContentMaxXHeadersUsed); // Row freeze: use width before freeze
else
content_max_x = column->ContentMaxXUnfrozen; // Row freeze: use width after freeze
if (content_max_x > column->ClipRect.Max.x)
continue;
}
const int merge_group_n = (has_freeze_h && column_n < table->FreezeColumnsCount ? 0 : 1) + (has_freeze_v && merge_group_sub_n == 0 ? 0 : 2);
IM_ASSERT(channel_no < IMGUI_TABLE_MAX_DRAW_CHANNELS);
MergeGroup* merge_group = &merge_groups[merge_group_n];
if (merge_group->ChannelsCount == 0)
merge_group->ClipRect = ImRect(+FLT_MAX, +FLT_MAX, -FLT_MAX, -FLT_MAX);
merge_group->ChannelsMask.SetBit(channel_no);
merge_group->ChannelsCount++;
merge_group->ClipRect.Add(src_channel->_CmdBuffer[0].ClipRect);
merge_group_mask |= (1 << merge_group_n);
}
// Invalidate current draw channel
// (we don't clear DrawChannelFrozen/DrawChannelUnfrozen solely to facilitate debugging/later inspection of data)
column->DrawChannelCurrent = (ImGuiTableDrawChannelIdx)-1;
}
// [DEBUG] Display merge groups
#if 0
if (g.IO.KeyShift)
for (int merge_group_n = 0; merge_group_n < IM_ARRAYSIZE(merge_groups); merge_group_n++)
{
MergeGroup* merge_group = &merge_groups[merge_group_n];
if (merge_group->ChannelsCount == 0)
continue;
char buf[32];
ImFormatString(buf, 32, "MG%d:%d", merge_group_n, merge_group->ChannelsCount);
ImVec2 text_pos = merge_group->ClipRect.Min + ImVec2(4, 4);
ImVec2 text_size = CalcTextSize(buf, NULL);
GetForegroundDrawList()->AddRectFilled(text_pos, text_pos + text_size, IM_COL32(0, 0, 0, 255));
GetForegroundDrawList()->AddText(text_pos, IM_COL32(255, 255, 0, 255), buf, NULL);
GetForegroundDrawList()->AddRect(merge_group->ClipRect.Min, merge_group->ClipRect.Max, IM_COL32(255, 255, 0, 255));
}
#endif
// 2. Rewrite channel list in our preferred order
if (merge_group_mask != 0)
{
// We skip channel 0 (Bg0/Bg1) and 1 (Bg2 frozen) from the shuffling since they won't move - see channels allocation in TableSetupDrawChannels().
const int LEADING_DRAW_CHANNELS = 2;
g.DrawChannelsTempMergeBuffer.resize(splitter->_Count - LEADING_DRAW_CHANNELS); // Use shared temporary storage so the allocation gets amortized
ImDrawChannel* dst_tmp = g.DrawChannelsTempMergeBuffer.Data;
ImBitArray<IMGUI_TABLE_MAX_DRAW_CHANNELS> remaining_mask; // We need 132-bit of storage
remaining_mask.ClearBits();
remaining_mask.SetBitRange(LEADING_DRAW_CHANNELS, splitter->_Count - 1);
remaining_mask.ClearBit(table->Bg2DrawChannelUnfrozen);
IM_ASSERT(has_freeze_v == false || table->Bg2DrawChannelUnfrozen != TABLE_DRAW_CHANNEL_BG2_FROZEN);
int remaining_count = splitter->_Count - (has_freeze_v ? LEADING_DRAW_CHANNELS + 1 : LEADING_DRAW_CHANNELS);
//ImRect host_rect = (table->InnerWindow == table->OuterWindow) ? table->InnerClipRect : table->HostClipRect;
ImRect host_rect = table->HostClipRect;
for (int merge_group_n = 0; merge_group_n < IM_ARRAYSIZE(merge_groups); merge_group_n++)
{
if (int merge_channels_count = merge_groups[merge_group_n].ChannelsCount)
{
MergeGroup* merge_group = &merge_groups[merge_group_n];
ImRect merge_clip_rect = merge_group->ClipRect;
// Extend outer-most clip limits to match those of host, so draw calls can be merged even if
// outer-most columns have some outer padding offsetting them from their parent ClipRect.
// The principal cases this is dealing with are:
// - On a same-window table (not scrolling = single group), all fitting columns ClipRect -> will extend and match host ClipRect -> will merge
// - Columns can use padding and have left-most ClipRect.Min.x and right-most ClipRect.Max.x != from host ClipRect -> will extend and match host ClipRect -> will merge
// FIXME-TABLE FIXME-WORKRECT: We are wasting a merge opportunity on tables without scrolling if column doesn't fit
// within host clip rect, solely because of the half-padding difference between window->WorkRect and window->InnerClipRect.
if ((merge_group_n & 1) == 0 || !has_freeze_h)
merge_clip_rect.Min.x = ImMin(merge_clip_rect.Min.x, host_rect.Min.x);
if ((merge_group_n & 2) == 0 || !has_freeze_v)
merge_clip_rect.Min.y = ImMin(merge_clip_rect.Min.y, host_rect.Min.y);
if ((merge_group_n & 1) != 0)
merge_clip_rect.Max.x = ImMax(merge_clip_rect.Max.x, host_rect.Max.x);
if ((merge_group_n & 2) != 0 && (table->Flags & ImGuiTableFlags_NoHostExtendY) == 0)
merge_clip_rect.Max.y = ImMax(merge_clip_rect.Max.y, host_rect.Max.y);
#if 0
GetOverlayDrawList()->AddRect(merge_group->ClipRect.Min, merge_group->ClipRect.Max, IM_COL32(255, 0, 0, 200), 0.0f, ~0, 1.0f);
GetOverlayDrawList()->AddLine(merge_group->ClipRect.Min, merge_clip_rect.Min, IM_COL32(255, 100, 0, 200));
GetOverlayDrawList()->AddLine(merge_group->ClipRect.Max, merge_clip_rect.Max, IM_COL32(255, 100, 0, 200));
#endif
remaining_count -= merge_group->ChannelsCount;
for (int n = 0; n < IM_ARRAYSIZE(remaining_mask.Storage); n++)
remaining_mask.Storage[n] &= ~merge_group->ChannelsMask.Storage[n];
for (int n = 0; n < splitter->_Count && merge_channels_count != 0; n++)
{
// Copy + overwrite new clip rect
if (!merge_group->ChannelsMask.TestBit(n))
continue;
merge_group->ChannelsMask.ClearBit(n);
merge_channels_count--;
ImDrawChannel* channel = &splitter->_Channels[n];
IM_ASSERT(channel->_CmdBuffer.Size == 1 && merge_clip_rect.Contains(ImRect(channel->_CmdBuffer[0].ClipRect)));
channel->_CmdBuffer[0].ClipRect = merge_clip_rect.ToVec4();
memcpy(dst_tmp++, channel, sizeof(ImDrawChannel));
}
}
// Make sure Bg2DrawChannelUnfrozen appears in the middle of our groups (whereas Bg0/Bg1 and Bg2 frozen are fixed to 0 and 1)
if (merge_group_n == 1 && has_freeze_v)
memcpy(dst_tmp++, &splitter->_Channels[table->Bg2DrawChannelUnfrozen], sizeof(ImDrawChannel));
}
// Append unmergeable channels that we didn't reorder at the end of the list
for (int n = 0; n < splitter->_Count && remaining_count != 0; n++)
{
if (!remaining_mask.TestBit(n))
continue;
ImDrawChannel* channel = &splitter->_Channels[n];
memcpy(dst_tmp++, channel, sizeof(ImDrawChannel));
remaining_count--;
}
IM_ASSERT(dst_tmp == g.DrawChannelsTempMergeBuffer.Data + g.DrawChannelsTempMergeBuffer.Size);
memcpy(splitter->_Channels.Data + LEADING_DRAW_CHANNELS, g.DrawChannelsTempMergeBuffer.Data, (splitter->_Count - LEADING_DRAW_CHANNELS) * sizeof(ImDrawChannel));
}
}
// FIXME-TABLE: This is a mess, need to redesign how we render borders (as some are also done in TableEndRow)
void ImGui::TableDrawBorders(ImGuiTable* table)
{
ImGuiWindow* inner_window = table->InnerWindow;
if (inner_window->Hidden || !table->HostClipRect.Overlaps(table->InnerClipRect))
return;
ImDrawList* inner_drawlist = inner_window->DrawList;
table->DrawSplitter.SetCurrentChannel(inner_drawlist, TABLE_DRAW_CHANNEL_BG0);
inner_drawlist->PushClipRect(table->Bg0ClipRectForDrawCmd.Min, table->Bg0ClipRectForDrawCmd.Max, false);
// Draw inner border and resizing feedback
const float border_size = TABLE_BORDER_SIZE;
const float draw_y1 = table->InnerRect.Min.y;
const float draw_y2_body = table->InnerRect.Max.y;
const float draw_y2_head = table->IsUsingHeaders ? ((table->FreezeRowsCount >= 1 ? table->OuterRect.Min.y : table->WorkRect.Min.y) + table->LastFirstRowHeight) : draw_y1;
if (table->Flags & ImGuiTableFlags_BordersInnerV)
{
for (int order_n = 0; order_n < table->ColumnsCount; order_n++)
{
if (!(table->EnabledMaskByDisplayOrder & ((ImU64)1 << order_n)))
continue;
const int column_n = table->DisplayOrderToIndex[order_n];
ImGuiTableColumn* column = &table->Columns[column_n];
const bool is_hovered = (table->HoveredColumnBorder == column_n);
const bool is_resized = (table->ResizedColumn == column_n) && (table->InstanceInteracted == table->InstanceCurrent);
const bool is_resizable = (column->Flags & (ImGuiTableColumnFlags_NoResize | ImGuiTableColumnFlags_NoDirectResize_)) == 0;
const bool is_frozen_separator = (table->FreezeColumnsCount != -1 && table->FreezeColumnsCount == order_n + 1);
if (column->MaxX > table->InnerClipRect.Max.x && !is_resized)// && is_hovered)
continue;
if (column->NextEnabledColumn == -1 && !is_resizable && (table->Flags & ImGuiTableFlags_SameWidths) == 0)
continue;
if (column->MaxX <= column->ClipRect.Min.x) // FIXME-TABLE FIXME-STYLE: Assume BorderSize==1, this is problematic if we want to increase the border size..
continue;
// Draw in outer window so right-most column won't be clipped
// Always draw full height border when being resized/hovered, or on the delimitation of frozen column scrolling.
ImU32 col;
float draw_y2;
if (is_hovered || is_resized || is_frozen_separator)
{
draw_y2 = draw_y2_body;
col = is_resized ? GetColorU32(ImGuiCol_SeparatorActive) : is_hovered ? GetColorU32(ImGuiCol_SeparatorHovered) : table->BorderColorStrong;
}
else
{
draw_y2 = (table->Flags & (ImGuiTableFlags_NoBordersInBody | ImGuiTableFlags_NoBordersInBodyUntilResize)) ? draw_y2_head : draw_y2_body;
col = (table->Flags & (ImGuiTableFlags_NoBordersInBody | ImGuiTableFlags_NoBordersInBodyUntilResize)) ? table->BorderColorStrong : table->BorderColorLight;
}
if (draw_y2 > draw_y1)
inner_drawlist->AddLine(ImVec2(column->MaxX, draw_y1), ImVec2(column->MaxX, draw_y2), col, border_size);
}
}
// Draw outer border
// FIXME: could use AddRect or explicit VLine/HLine helper?
if (table->Flags & ImGuiTableFlags_BordersOuter)
{
// Display outer border offset by 1 which is a simple way to display it without adding an extra draw call
// (Without the offset, in outer_window it would be rendered behind cells, because child windows are above their
// parent. In inner_window, it won't reach out over scrollbars. Another weird solution would be to display part
// of it in inner window, and the part that's over scrollbars in the outer window..)
// Either solution currently won't allow us to use a larger border size: the border would clipped.
const ImRect outer_border = table->OuterRect;
const ImU32 outer_col = table->BorderColorStrong;
if ((table->Flags & ImGuiTableFlags_BordersOuter) == ImGuiTableFlags_BordersOuter)
{
inner_drawlist->AddRect(outer_border.Min, outer_border.Max, outer_col, 0.0f, ~0, border_size);
}
else if (table->Flags & ImGuiTableFlags_BordersOuterV)
{
inner_drawlist->AddLine(outer_border.Min, ImVec2(outer_border.Min.x, outer_border.Max.y), outer_col, border_size);
inner_drawlist->AddLine(ImVec2(outer_border.Max.x, outer_border.Min.y), outer_border.Max, outer_col, border_size);
}
else if (table->Flags & ImGuiTableFlags_BordersOuterH)
{
inner_drawlist->AddLine(outer_border.Min, ImVec2(outer_border.Max.x, outer_border.Min.y), outer_col, border_size);
inner_drawlist->AddLine(ImVec2(outer_border.Min.x, outer_border.Max.y), outer_border.Max, outer_col, border_size);
}
}
if ((table->Flags & ImGuiTableFlags_BordersInnerH) && table->RowPosY2 < table->OuterRect.Max.y)
{
// Draw bottom-most row border
const float border_y = table->RowPosY2;
if (border_y >= table->BgClipRect.Min.y && border_y < table->BgClipRect.Max.y)
inner_drawlist->AddLine(ImVec2(table->BorderX1, border_y), ImVec2(table->BorderX2, border_y), table->BorderColorLight, border_size);
}
inner_drawlist->PopClipRect();
}
//-------------------------------------------------------------------------
// [SECTION] Tables: Sorting
//-------------------------------------------------------------------------
// - TableGetSortSpecs()
// - TableFixColumnSortDirection() [Internal]
// - TableGetColumnNextSortDirection() [Internal]
// - TableSetColumnSortDirection() [Internal]
// - TableSortSpecsSanitize() [Internal]
// - TableSortSpecsBuild() [Internal]
//-------------------------------------------------------------------------
// Return NULL if no sort specs (most often when ImGuiTableFlags_Sortable is not set)
// You can sort your data again when 'SpecsChanged == true'. It will be true with sorting specs have changed since
// last call, or the first time.
// Lifetime: don't hold on this pointer over multiple frames or past any subsequent call to BeginTable()!
ImGuiTableSortSpecs* ImGui::TableGetSortSpecs()
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
IM_ASSERT(table != NULL);
if (!(table->Flags & ImGuiTableFlags_Sortable))
return NULL;
// Require layout (in case TableHeadersRow() hasn't been called) as it may alter IsSortSpecsDirty in some paths.
if (!table->IsLayoutLocked)
TableUpdateLayout(table);
if (table->IsSortSpecsDirty)
TableSortSpecsBuild(table);
return &table->SortSpecs;
}
static inline ImGuiSortDirection TableGetColumnAvailSortDirection(ImGuiTableColumn* column, int n)
{
IM_ASSERT(n < column->SortDirectionsAvailCount);
return (column->SortDirectionsAvailList >> (n << 1)) & 0x03;
}
// Fix sort direction if currently set on a value which is unavailable (e.g. activating NoSortAscending/NoSortDescending)
void ImGui::TableFixColumnSortDirection(ImGuiTable* table, ImGuiTableColumn* column)
{
if (column->SortOrder == -1 || (column->SortDirectionsAvailMask & (1 << column->SortDirection)) != 0)
return;
column->SortDirection = (ImU8)TableGetColumnAvailSortDirection(column, 0);
table->IsSortSpecsDirty = true;
}
// Calculate next sort direction that would be set after clicking the column
// - If the PreferSortDescending flag is set, we will default to a Descending direction on the first click.
// - Note that the PreferSortAscending flag is never checked, it is essentially the default and therefore a no-op.
IM_STATIC_ASSERT(ImGuiSortDirection_None == 0 && ImGuiSortDirection_Ascending == 1 && ImGuiSortDirection_Descending == 2);
ImGuiSortDirection ImGui::TableGetColumnNextSortDirection(ImGuiTableColumn* column)
{
IM_ASSERT(column->SortDirectionsAvailCount > 0);
if (column->SortOrder == -1)
return TableGetColumnAvailSortDirection(column, 0);
for (int n = 0; n < 3; n++)
if (column->SortDirection == TableGetColumnAvailSortDirection(column, n))
return TableGetColumnAvailSortDirection(column, (n + 1) % column->SortDirectionsAvailCount);
IM_ASSERT(0);
return ImGuiSortDirection_None;
}
// Note that the NoSortAscending/NoSortDescending flags are processed in TableSortSpecsSanitize(), and they may change/revert
// the value of SortDirection. We could technically also do it here but it would be unnecessary and duplicate code.
void ImGui::TableSetColumnSortDirection(int column_n, ImGuiSortDirection sort_direction, bool append_to_sort_specs)
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
if (!(table->Flags & ImGuiTableFlags_SortMulti))
append_to_sort_specs = false;
if (!(table->Flags & ImGuiTableFlags_SortTristate))
IM_ASSERT(sort_direction != ImGuiSortDirection_None);
ImGuiTableColumnIdx sort_order_max = 0;
if (append_to_sort_specs)
for (int other_column_n = 0; other_column_n < table->ColumnsCount; other_column_n++)
sort_order_max = ImMax(sort_order_max, table->Columns[other_column_n].SortOrder);
ImGuiTableColumn* column = &table->Columns[column_n];
column->SortDirection = (ImU8)sort_direction;
if (column->SortDirection == ImGuiSortDirection_None)
column->SortOrder = -1;
else if (column->SortOrder == -1 || !append_to_sort_specs)
column->SortOrder = append_to_sort_specs ? sort_order_max + 1 : 0;
for (int other_column_n = 0; other_column_n < table->ColumnsCount; other_column_n++)
{
ImGuiTableColumn* other_column = &table->Columns[other_column_n];
if (other_column != column && !append_to_sort_specs)
other_column->SortOrder = -1;
TableFixColumnSortDirection(table, other_column);
}
table->IsSettingsDirty = true;
table->IsSortSpecsDirty = true;
}
void ImGui::TableSortSpecsSanitize(ImGuiTable* table)
{
IM_ASSERT(table->Flags & ImGuiTableFlags_Sortable);
// Clear SortOrder from hidden column and verify that there's no gap or duplicate.
int sort_order_count = 0;
ImU64 sort_order_mask = 0x00;
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
{
ImGuiTableColumn* column = &table->Columns[column_n];
if (column->SortOrder != -1 && !column->IsEnabled)
column->SortOrder = -1;
if (column->SortOrder == -1)
continue;
sort_order_count++;
sort_order_mask |= ((ImU64)1 << column->SortOrder);
IM_ASSERT(sort_order_count < (int)sizeof(sort_order_mask) * 8);
}
const bool need_fix_linearize = ((ImU64)1 << sort_order_count) != (sort_order_mask + 1);
const bool need_fix_single_sort_order = (sort_order_count > 1) && !(table->Flags & ImGuiTableFlags_SortMulti);
if (need_fix_linearize || need_fix_single_sort_order)
{
ImU64 fixed_mask = 0x00;
for (int sort_n = 0; sort_n < sort_order_count; sort_n++)
{
// Fix: Rewrite sort order fields if needed so they have no gap or duplicate.
// (e.g. SortOrder 0 disappeared, SortOrder 1..2 exists --> rewrite then as SortOrder 0..1)
int column_with_smallest_sort_order = -1;
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
if ((fixed_mask & ((ImU64)1 << (ImU64)column_n)) == 0 && table->Columns[column_n].SortOrder != -1)
if (column_with_smallest_sort_order == -1 || table->Columns[column_n].SortOrder < table->Columns[column_with_smallest_sort_order].SortOrder)
column_with_smallest_sort_order = column_n;
IM_ASSERT(column_with_smallest_sort_order != -1);
fixed_mask |= ((ImU64)1 << column_with_smallest_sort_order);
table->Columns[column_with_smallest_sort_order].SortOrder = (ImGuiTableColumnIdx)sort_n;
// Fix: Make sure only one column has a SortOrder if ImGuiTableFlags_MultiSortable is not set.
if (need_fix_single_sort_order)
{
sort_order_count = 1;
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
if (column_n != column_with_smallest_sort_order)
table->Columns[column_n].SortOrder = -1;
break;
}
}
}
// Fallback default sort order (if no column had the ImGuiTableColumnFlags_DefaultSort flag)
if (sort_order_count == 0 && !(table->Flags & ImGuiTableFlags_SortTristate))
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
{
ImGuiTableColumn* column = &table->Columns[column_n];
if (column->IsEnabled && !(column->Flags & ImGuiTableColumnFlags_NoSort))
{
sort_order_count = 1;
column->SortOrder = 0;
column->SortDirection = (ImU8)TableGetColumnAvailSortDirection(column, 0);
break;
}
}
table->SortSpecsCount = (ImGuiTableColumnIdx)sort_order_count;
}
void ImGui::TableSortSpecsBuild(ImGuiTable* table)
{
IM_ASSERT(table->IsSortSpecsDirty);
TableSortSpecsSanitize(table);
// Write output
table->SortSpecsMulti.resize(table->SortSpecsCount <= 1 ? 0 : table->SortSpecsCount);
ImGuiTableColumnSortSpecs* sort_specs = (table->SortSpecsCount == 0) ? NULL : (table->SortSpecsCount == 1) ? &table->SortSpecsSingle : table->SortSpecsMulti.Data;
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
{
ImGuiTableColumn* column = &table->Columns[column_n];
if (column->SortOrder == -1)
continue;
IM_ASSERT(column->SortOrder < table->SortSpecsCount);
ImGuiTableColumnSortSpecs* sort_spec = &sort_specs[column->SortOrder];
sort_spec->ColumnUserID = column->UserID;
sort_spec->ColumnIndex = (ImGuiTableColumnIdx)column_n;
sort_spec->SortOrder = (ImGuiTableColumnIdx)column->SortOrder;
sort_spec->SortDirection = column->SortDirection;
}
table->SortSpecs.Specs = sort_specs;
table->SortSpecs.SpecsCount = table->SortSpecsCount;
table->SortSpecs.SpecsDirty = true; // Mark as dirty for user
table->IsSortSpecsDirty = false; // Mark as not dirty for us
}
//-------------------------------------------------------------------------
// [SECTION] Tables: Headers
//-------------------------------------------------------------------------
// - TableGetHeaderRowHeight() [Internal]
// - TableHeadersRow()
// - TableHeader()
//-------------------------------------------------------------------------
float ImGui::TableGetHeaderRowHeight()
{
// Caring for a minor edge case:
// Calculate row height, for the unlikely case that some labels may be taller than others.
// If we didn't do that, uneven header height would highlight but smaller one before the tallest wouldn't catch input for all height.
// In your custom header row you may omit this all together and just call TableNextRow() without a height...
float row_height = GetTextLineHeight();
int columns_count = TableGetColumnCount();
for (int column_n = 0; column_n < columns_count; column_n++)
if (TableGetColumnFlags(column_n) & ImGuiTableColumnFlags_IsEnabled)
row_height = ImMax(row_height, CalcTextSize(TableGetColumnName(column_n)).y);
row_height += GetStyle().CellPadding.y * 2.0f;
return row_height;
}
// [Public] This is a helper to output TableHeader() calls based on the column names declared in TableSetupColumn().
// The intent is that advanced users willing to create customized headers would not need to use this helper
// and can create their own! For example: TableHeader() may be preceeded by Checkbox() or other custom widgets.
// See 'Demo->Tables->Custom headers' for a demonstration of implementing a custom version of this.
// This code is constructed to not make much use of internal functions, as it is intended to be a template to copy.
// FIXME-TABLE: TableOpenContextMenu() and TableGetHeaderRowHeight() are not public.
void ImGui::TableHeadersRow()
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
IM_ASSERT(table != NULL && "Need to call TableHeadersRow() after BeginTable()!");
// Open row
const float row_y1 = GetCursorScreenPos().y;
const float row_height = TableGetHeaderRowHeight();
TableNextRow(ImGuiTableRowFlags_Headers, row_height);
if (table->HostSkipItems) // Merely an optimization, you may skip in your own code.
return;
const int columns_count = TableGetColumnCount();
for (int column_n = 0; column_n < columns_count; column_n++)
{
if (!TableSetColumnIndex(column_n))
continue;
// Push an id to allow unnamed labels (generally accidental, but let's behave nicely with them)
// - in your own code you may omit the PushID/PopID all-together, provided you know they won't collide
// - table->InstanceCurrent is only >0 when we use multiple BeginTable/EndTable calls with same identifier.
const char* name = TableGetColumnName(column_n);
PushID(table->InstanceCurrent * table->ColumnsCount + column_n);
TableHeader(name);
PopID();
}
// Allow opening popup from the right-most section after the last column.
ImVec2 mouse_pos = ImGui::GetMousePos();
if (IsMouseReleased(1) && TableGetHoveredColumn() == columns_count)
if (mouse_pos.y >= row_y1 && mouse_pos.y < row_y1 + row_height)
TableOpenContextMenu(-1); // Will open a non-column-specific popup.
}
// Emit a column header (text + optional sort order)
// We cpu-clip text here so that all columns headers can be merged into a same draw call.
// Note that because of how we cpu-clip and display sorting indicators, you _cannot_ use SameLine() after a TableHeader()
void ImGui::TableHeader(const char* label)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
if (window->SkipItems)
return;
ImGuiTable* table = g.CurrentTable;
IM_ASSERT(table != NULL && "Need to call TableHeader() after BeginTable()!");
IM_ASSERT(table->CurrentColumn != -1);
const int column_n = table->CurrentColumn;
ImGuiTableColumn* column = &table->Columns[column_n];
// Label
if (label == NULL)
label = "";
const char* label_end = FindRenderedTextEnd(label);
ImVec2 label_size = CalcTextSize(label, label_end, true);
ImVec2 label_pos = window->DC.CursorPos;
// If we already got a row height, there's use that.
// FIXME-TABLE: Padding problem if the correct outer-padding CellBgRect strays off our ClipRect?
ImRect cell_r = TableGetCellBgRect(table, column_n);
float label_height = ImMax(label_size.y, table->RowMinHeight - table->CellPaddingY * 2.0f);
// Calculate ideal size for sort order arrow
float w_arrow = 0.0f;
float w_sort_text = 0.0f;
char sort_order_suf[4] = "";
const float ARROW_SCALE = 0.65f;
if ((table->Flags & ImGuiTableFlags_Sortable) && !(column->Flags & ImGuiTableColumnFlags_NoSort))
{
w_arrow = ImFloor(g.FontSize * ARROW_SCALE + g.Style.FramePadding.x);
if (column->SortOrder > 0)
{
ImFormatString(sort_order_suf, IM_ARRAYSIZE(sort_order_suf), "%d", column->SortOrder + 1);
w_sort_text = g.Style.ItemInnerSpacing.x + CalcTextSize(sort_order_suf).x;
}
}
// We feed our unclipped width to the column without writing on CursorMaxPos, so that column is still considering for merging.
float max_pos_x = label_pos.x + label_size.x + w_sort_text + w_arrow;
column->ContentMaxXHeadersUsed = ImMax(column->ContentMaxXHeadersUsed, column->WorkMaxX);
column->ContentMaxXHeadersIdeal = ImMax(column->ContentMaxXHeadersIdeal, max_pos_x);
// Keep header highlighted when context menu is open.
const bool selected = (table->IsContextPopupOpen && table->ContextPopupColumn == column_n && table->InstanceInteracted == table->InstanceCurrent);
ImGuiID id = window->GetID(label);
ImRect bb(cell_r.Min.x, cell_r.Min.y, cell_r.Max.x, ImMax(cell_r.Max.y, cell_r.Min.y + label_height + g.Style.CellPadding.y * 2.0f));
ItemSize(ImVec2(0.0f, label_height)); // Don't declare unclipped width, it'll be fed ContentMaxPosHeadersIdeal
if (!ItemAdd(bb, id))
return;
//GetForegroundDrawList()->AddRect(cell_r.Min, cell_r.Max, IM_COL32(255, 0, 0, 255)); // [DEBUG]
//GetForegroundDrawList()->AddRect(bb.Min, bb.Max, IM_COL32(255, 0, 0, 255)); // [DEBUG]
// Using AllowItemOverlap mode because we cover the whole cell, and we want user to be able to submit subsequent items.
bool hovered, held;
bool pressed = ButtonBehavior(bb, id, &hovered, &held, ImGuiButtonFlags_AllowItemOverlap);
if (g.ActiveId != id)
SetItemAllowOverlap();
if (held || hovered || selected)
{
const ImU32 col = GetColorU32(held ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
//RenderFrame(bb.Min, bb.Max, col, false, 0.0f);
TableSetBgColor(ImGuiTableBgTarget_CellBg, col, table->CurrentColumn);
RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_TypeThin | ImGuiNavHighlightFlags_NoRounding);
}
else
{
// Submit single cell bg color in the case we didn't submit a full header row
if ((table->RowFlags & ImGuiTableRowFlags_Headers) == 0)
TableSetBgColor(ImGuiTableBgTarget_CellBg, GetColorU32(ImGuiCol_TableHeaderBg), table->CurrentColumn);
}
if (held)
table->HeldHeaderColumn = (ImGuiTableColumnIdx)column_n;
window->DC.CursorPos.y -= g.Style.ItemSpacing.y * 0.5f;
// Drag and drop to re-order columns.
// FIXME-TABLE: Scroll request while reordering a column and it lands out of the scrolling zone.
if (held && (table->Flags & ImGuiTableFlags_Reorderable) && IsMouseDragging(0) && !g.DragDropActive)
{
// While moving a column it will jump on the other side of the mouse, so we also test for MouseDelta.x
table->ReorderColumn = (ImGuiTableColumnIdx)column_n;
table->InstanceInteracted = table->InstanceCurrent;
// We don't reorder: through the frozen<>unfrozen line, or through a column that is marked with ImGuiTableColumnFlags_NoReorder.
if (g.IO.MouseDelta.x < 0.0f && g.IO.MousePos.x < cell_r.Min.x)
if (ImGuiTableColumn* prev_column = (column->PrevEnabledColumn != -1) ? &table->Columns[column->PrevEnabledColumn] : NULL)
if (!((column->Flags | prev_column->Flags) & ImGuiTableColumnFlags_NoReorder))
if ((column->IndexWithinEnabledSet < table->FreezeColumnsRequest) == (prev_column->IndexWithinEnabledSet < table->FreezeColumnsRequest))
table->ReorderColumnDir = -1;
if (g.IO.MouseDelta.x > 0.0f && g.IO.MousePos.x > cell_r.Max.x)
if (ImGuiTableColumn* next_column = (column->NextEnabledColumn != -1) ? &table->Columns[column->NextEnabledColumn] : NULL)
if (!((column->Flags | next_column->Flags) & ImGuiTableColumnFlags_NoReorder))
if ((column->IndexWithinEnabledSet < table->FreezeColumnsRequest) == (next_column->IndexWithinEnabledSet < table->FreezeColumnsRequest))
table->ReorderColumnDir = +1;
}
// Sort order arrow
const float ellipsis_max = cell_r.Max.x - w_arrow - w_sort_text;
if ((table->Flags & ImGuiTableFlags_Sortable) && !(column->Flags & ImGuiTableColumnFlags_NoSort))
{
if (column->SortOrder != -1)
{
float x = ImMax(cell_r.Min.x, cell_r.Max.x - w_arrow - w_sort_text);
float y = label_pos.y;
if (column->SortOrder > 0)
{
PushStyleColor(ImGuiCol_Text, GetColorU32(ImGuiCol_Text, 0.70f));
RenderText(ImVec2(x + g.Style.ItemInnerSpacing.x, y), sort_order_suf);
PopStyleColor();
x += w_sort_text;
}
RenderArrow(window->DrawList, ImVec2(x, y), GetColorU32(ImGuiCol_Text), column->SortDirection == ImGuiSortDirection_Ascending ? ImGuiDir_Up : ImGuiDir_Down, ARROW_SCALE);
}
// Handle clicking on column header to adjust Sort Order
if (pressed && table->ReorderColumn != column_n)
{
ImGuiSortDirection sort_direction = TableGetColumnNextSortDirection(column);
TableSetColumnSortDirection(column_n, sort_direction, g.IO.KeyShift);
}
}
// Render clipped label. Clipping here ensure that in the majority of situations, all our header cells will
// be merged into a single draw call.
//window->DrawList->AddCircleFilled(ImVec2(ellipsis_max, label_pos.y), 40, IM_COL32_WHITE);
RenderTextEllipsis(window->DrawList, label_pos, ImVec2(ellipsis_max, label_pos.y + label_height + g.Style.FramePadding.y), ellipsis_max, ellipsis_max, label, label_end, &label_size);
const bool text_clipped = label_size.x > (ellipsis_max - label_pos.x);
if (text_clipped && hovered && g.HoveredIdNotActiveTimer > g.TooltipSlowDelay)
SetTooltip("%.*s", (int)(label_end - label), label);
// We don't use BeginPopupContextItem() because we want the popup to stay up even after the column is hidden
if (IsMouseReleased(1) && IsItemHovered())
TableOpenContextMenu(column_n);
}
//-------------------------------------------------------------------------
// [SECTION] Tables: Context Menu
//-------------------------------------------------------------------------
// - TableOpenContextMenu() [Internal]
// - TableDrawContextMenu() [Internal]
//-------------------------------------------------------------------------
// Use -1 to open menu not specific to a given column.
void ImGui::TableOpenContextMenu(int column_n)
{
ImGuiContext& g = *GImGui;
ImGuiTable* table = g.CurrentTable;
if (column_n == -1 && table->CurrentColumn != -1) // When called within a column automatically use this one (for consistency)
column_n = table->CurrentColumn;
if (column_n == table->ColumnsCount) // To facilitate using with TableGetHoveredColumn()
column_n = -1;
IM_ASSERT(column_n >= -1 && column_n < table->ColumnsCount);
if (table->Flags & (ImGuiTableFlags_Resizable | ImGuiTableFlags_Reorderable | ImGuiTableFlags_Hideable))
{
table->IsContextPopupOpen = true;
table->ContextPopupColumn = (ImGuiTableColumnIdx)column_n;
table->InstanceInteracted = table->InstanceCurrent;
const ImGuiID context_menu_id = ImHashStr("##ContextMenu", 0, table->ID);
OpenPopupEx(context_menu_id, ImGuiPopupFlags_None);
}
}
// Output context menu into current window (generally a popup)
// FIXME-TABLE: Ideally this should be writable by the user. Full programmatic access to that data?
void ImGui::TableDrawContextMenu(ImGuiTable* table)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
if (window->SkipItems)
return;
bool want_separator = false;
const int column_n = (table->ContextPopupColumn >= 0 && table->ContextPopupColumn < table->ColumnsCount) ? table->ContextPopupColumn : -1;
ImGuiTableColumn* column = (column_n != -1) ? &table->Columns[column_n] : NULL;
// Sizing
if (table->Flags & ImGuiTableFlags_Resizable)
{
if (column != NULL)
{
const bool can_resize = !(column->Flags & ImGuiTableColumnFlags_NoResize) && column->IsEnabled;
if (MenuItem("Size column to fit###SizeOne", NULL, false, can_resize))
TableSetColumnWidthAutoSingle(table, column_n);
}
const char* size_all_desc;
if (table->ColumnsEnabledFixedCount == table->ColumnsEnabledCount)
size_all_desc = "Size all columns to fit###SizeAll"; // All fixed
else if (table->ColumnsEnabledFixedCount == 0)
size_all_desc = "Size all columns to default###SizeAll"; // All stretch
else
size_all_desc = "Size all columns to fit/default###SizeAll";// Mixed
if (MenuItem(size_all_desc, NULL))
TableSetColumnWidthAutoAll(table);
want_separator = true;
}
// Ordering
if (table->Flags & ImGuiTableFlags_Reorderable)
{
if (MenuItem("Reset order", NULL, false, !table->IsDefaultDisplayOrder))
table->IsResetDisplayOrderRequest = true;
want_separator = true;
}
// Reset all (should work but seems unnecessary/noisy to expose?)
//if (MenuItem("Reset all"))
// table->IsResetAllRequest = true;
// Sorting
// (modify TableOpenContextMenu() to add _Sortable flag if enabling this)
#if 0
if ((table->Flags & ImGuiTableFlags_Sortable) && column != NULL && (column->Flags & ImGuiTableColumnFlags_NoSort) == 0)
{
if (want_separator)
Separator();
want_separator = true;
bool append_to_sort_specs = g.IO.KeyShift;
if (MenuItem("Sort in Ascending Order", NULL, column->SortOrder != -1 && column->SortDirection == ImGuiSortDirection_Ascending, (column->Flags & ImGuiTableColumnFlags_NoSortAscending) == 0))
TableSetColumnSortDirection(table, column_n, ImGuiSortDirection_Ascending, append_to_sort_specs);
if (MenuItem("Sort in Descending Order", NULL, column->SortOrder != -1 && column->SortDirection == ImGuiSortDirection_Descending, (column->Flags & ImGuiTableColumnFlags_NoSortDescending) == 0))
TableSetColumnSortDirection(table, column_n, ImGuiSortDirection_Descending, append_to_sort_specs);
}
#endif
// Hiding / Visibility
if (table->Flags & ImGuiTableFlags_Hideable)
{
if (want_separator)
Separator();
want_separator = true;
PushItemFlag(ImGuiItemFlags_SelectableDontClosePopup, true);
for (int other_column_n = 0; other_column_n < table->ColumnsCount; other_column_n++)
{
ImGuiTableColumn* other_column = &table->Columns[other_column_n];
const char* name = TableGetColumnName(table, other_column_n);
if (name == NULL || name[0] == 0)
name = "<Unknown>";
// Make sure we can't hide the last active column
bool menu_item_active = (other_column->Flags & ImGuiTableColumnFlags_NoHide) ? false : true;
if (other_column->IsEnabled && table->ColumnsEnabledCount <= 1)
menu_item_active = false;
if (MenuItem(name, NULL, other_column->IsEnabled, menu_item_active))
other_column->IsEnabledNextFrame = !other_column->IsEnabled;
}
PopItemFlag();
}
}
//-------------------------------------------------------------------------
// [SECTION] Tables: Settings (.ini data)
//-------------------------------------------------------------------------
// FIXME: The binding/finding/creating flow are too confusing.
//-------------------------------------------------------------------------
// - TableSettingsInit() [Internal]
// - TableSettingsCalcChunkSize() [Internal]
// - TableSettingsCreate() [Internal]
// - TableSettingsFindByID() [Internal]
// - TableGetBoundSettings() [Internal]
// - TableResetSettings()
// - TableSaveSettings() [Internal]
// - TableLoadSettings() [Internal]
// - TableSettingsHandler_ClearAll() [Internal]
// - TableSettingsHandler_ApplyAll() [Internal]
// - TableSettingsHandler_ReadOpen() [Internal]
// - TableSettingsHandler_ReadLine() [Internal]
// - TableSettingsHandler_WriteAll() [Internal]
// - TableSettingsInstallHandler() [Internal]
//-------------------------------------------------------------------------
// [Init] 1: TableSettingsHandler_ReadXXXX() Load and parse .ini file into TableSettings.
// [Main] 2: TableLoadSettings() When table is created, bind Table to TableSettings, serialize TableSettings data into Table.
// [Main] 3: TableSaveSettings() When table properties are modified, serialize Table data into bound or new TableSettings, mark .ini as dirty.
// [Main] 4: TableSettingsHandler_WriteAll() When .ini file is dirty (which can come from other source), save TableSettings into .ini file.
//-------------------------------------------------------------------------
// Clear and initialize empty settings instance
static void TableSettingsInit(ImGuiTableSettings* settings, ImGuiID id, int columns_count, int columns_count_max)
{
IM_PLACEMENT_NEW(settings) ImGuiTableSettings();
ImGuiTableColumnSettings* settings_column = settings->GetColumnSettings();
for (int n = 0; n < columns_count_max; n++, settings_column++)
IM_PLACEMENT_NEW(settings_column) ImGuiTableColumnSettings();
settings->ID = id;
settings->ColumnsCount = (ImGuiTableColumnIdx)columns_count;
settings->ColumnsCountMax = (ImGuiTableColumnIdx)columns_count_max;
settings->WantApply = true;
}
static size_t TableSettingsCalcChunkSize(int columns_count)
{
return sizeof(ImGuiTableSettings) + (size_t)columns_count * sizeof(ImGuiTableColumnSettings);
}
ImGuiTableSettings* ImGui::TableSettingsCreate(ImGuiID id, int columns_count)
{
ImGuiContext& g = *GImGui;
ImGuiTableSettings* settings = g.SettingsTables.alloc_chunk(TableSettingsCalcChunkSize(columns_count));
TableSettingsInit(settings, id, columns_count, columns_count);
return settings;
}
// Find existing settings
ImGuiTableSettings* ImGui::TableSettingsFindByID(ImGuiID id)
{
// FIXME-OPT: Might want to store a lookup map for this?
ImGuiContext& g = *GImGui;
for (ImGuiTableSettings* settings = g.SettingsTables.begin(); settings != NULL; settings = g.SettingsTables.next_chunk(settings))
if (settings->ID == id)
return settings;
return NULL;
}
// Get settings for a given table, NULL if none
ImGuiTableSettings* ImGui::TableGetBoundSettings(ImGuiTable* table)
{
if (table->SettingsOffset != -1)
{
ImGuiContext& g = *GImGui;
ImGuiTableSettings* settings = g.SettingsTables.ptr_from_offset(table->SettingsOffset);
IM_ASSERT(settings->ID == table->ID);
if (settings->ColumnsCountMax >= table->ColumnsCount)
return settings; // OK
settings->ID = 0; // Invalidate storage, we won't fit because of a count change
}
return NULL;
}
// Restore initial state of table (with or without saved settings)
void ImGui::TableResetSettings(ImGuiTable* table)
{
table->IsInitializing = table->IsSettingsDirty = true;
table->IsResetAllRequest = false;
table->IsSettingsRequestLoad = false; // Don't reload from ini
table->SettingsLoadedFlags = ImGuiTableFlags_None; // Mark as nothing loaded so our initialized data becomes authoritative
}
void ImGui::TableSaveSettings(ImGuiTable* table)
{
table->IsSettingsDirty = false;
if (table->Flags & ImGuiTableFlags_NoSavedSettings)
return;
// Bind or create settings data
ImGuiContext& g = *GImGui;
ImGuiTableSettings* settings = TableGetBoundSettings(table);
if (settings == NULL)
{
settings = TableSettingsCreate(table->ID, table->ColumnsCount);
table->SettingsOffset = g.SettingsTables.offset_from_ptr(settings);
}
settings->ColumnsCount = (ImGuiTableColumnIdx)table->ColumnsCount;
// Serialize ImGuiTable/ImGuiTableColumn into ImGuiTableSettings/ImGuiTableColumnSettings
IM_ASSERT(settings->ID == table->ID);
IM_ASSERT(settings->ColumnsCount == table->ColumnsCount && settings->ColumnsCountMax >= settings->ColumnsCount);
ImGuiTableColumn* column = table->Columns.Data;
ImGuiTableColumnSettings* column_settings = settings->GetColumnSettings();
bool save_ref_scale = false;
settings->SaveFlags = ImGuiTableFlags_None;
for (int n = 0; n < table->ColumnsCount; n++, column++, column_settings++)
{
const float width_or_weight = (column->Flags & ImGuiTableColumnFlags_WidthStretch) ? column->StretchWeight : column->WidthRequest;
column_settings->WidthOrWeight = width_or_weight;
column_settings->Index = (ImGuiTableColumnIdx)n;
column_settings->DisplayOrder = column->DisplayOrder;
column_settings->SortOrder = column->SortOrder;
column_settings->SortDirection = column->SortDirection;
column_settings->IsEnabled = column->IsEnabled;
column_settings->IsStretch = (column->Flags & ImGuiTableColumnFlags_WidthStretch) ? 1 : 0;
if ((column->Flags & ImGuiTableColumnFlags_WidthStretch) == 0)
save_ref_scale = true;
// We skip saving some data in the .ini file when they are unnecessary to restore our state.
// Note that fixed width where initial width was derived from auto-fit will always be saved as InitStretchWeightOrWidth will be 0.0f.
// FIXME-TABLE: We don't have logic to easily compare SortOrder to DefaultSortOrder yet so it's always saved when present.
if (width_or_weight != column->InitStretchWeightOrWidth)
settings->SaveFlags |= ImGuiTableFlags_Resizable;
if (column->DisplayOrder != n)
settings->SaveFlags |= ImGuiTableFlags_Reorderable;
if (column->SortOrder != -1)
settings->SaveFlags |= ImGuiTableFlags_Sortable;
if (column->IsEnabled != ((column->Flags & ImGuiTableColumnFlags_DefaultHide) == 0))
settings->SaveFlags |= ImGuiTableFlags_Hideable;
}
settings->SaveFlags &= table->Flags;
settings->RefScale = save_ref_scale ? table->RefScale : 0.0f;
MarkIniSettingsDirty();
}
void ImGui::TableLoadSettings(ImGuiTable* table)
{
ImGuiContext& g = *GImGui;
table->IsSettingsRequestLoad = false;
if (table->Flags & ImGuiTableFlags_NoSavedSettings)
return;
// Bind settings
ImGuiTableSettings* settings;
if (table->SettingsOffset == -1)
{
settings = TableSettingsFindByID(table->ID);
if (settings == NULL)
return;
if (settings->ColumnsCount != table->ColumnsCount) // Allow settings if columns count changed. We could otherwise decide to return...
table->IsSettingsDirty = true;
table->SettingsOffset = g.SettingsTables.offset_from_ptr(settings);
}
else
{
settings = TableGetBoundSettings(table);
}
table->SettingsLoadedFlags = settings->SaveFlags;
table->RefScale = settings->RefScale;
// Serialize ImGuiTableSettings/ImGuiTableColumnSettings into ImGuiTable/ImGuiTableColumn
ImGuiTableColumnSettings* column_settings = settings->GetColumnSettings();
ImU64 display_order_mask = 0;
for (int data_n = 0; data_n < settings->ColumnsCount; data_n++, column_settings++)
{
int column_n = column_settings->Index;
if (column_n < 0 || column_n >= table->ColumnsCount)
continue;
ImGuiTableColumn* column = &table->Columns[column_n];
if (settings->SaveFlags & ImGuiTableFlags_Resizable)
{
if (column_settings->IsStretch)
column->StretchWeight = column_settings->WidthOrWeight;
else
column->WidthRequest = column_settings->WidthOrWeight;
column->AutoFitQueue = 0x00;
}
if (settings->SaveFlags & ImGuiTableFlags_Reorderable)
column->DisplayOrder = column_settings->DisplayOrder;
else
column->DisplayOrder = (ImGuiTableColumnIdx)column_n;
display_order_mask |= (ImU64)1 << column->DisplayOrder;
column->IsEnabled = column->IsEnabledNextFrame = column_settings->IsEnabled;
column->SortOrder = column_settings->SortOrder;
column->SortDirection = column_settings->SortDirection;
}
// Validate and fix invalid display order data
const ImU64 expected_display_order_mask = (settings->ColumnsCount == 64) ? ~0 : ((ImU64)1 << settings->ColumnsCount) - 1;
if (display_order_mask != expected_display_order_mask)
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
table->Columns[column_n].DisplayOrder = (ImGuiTableColumnIdx)column_n;
// Rebuild index
for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
table->DisplayOrderToIndex[table->Columns[column_n].DisplayOrder] = (ImGuiTableColumnIdx)column_n;
}
static void TableSettingsHandler_ClearAll(ImGuiContext* ctx, ImGuiSettingsHandler*)
{
ImGuiContext& g = *ctx;
for (int i = 0; i != g.Tables.GetSize(); i++)
g.Tables.GetByIndex(i)->SettingsOffset = -1;
g.SettingsTables.clear();
}
// Apply to existing windows (if any)
static void TableSettingsHandler_ApplyAll(ImGuiContext* ctx, ImGuiSettingsHandler*)
{
ImGuiContext& g = *ctx;
for (int i = 0; i != g.Tables.GetSize(); i++)
{
ImGuiTable* table = g.Tables.GetByIndex(i);
table->IsSettingsRequestLoad = true;
table->SettingsOffset = -1;
}
}
static void* TableSettingsHandler_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name)
{
ImGuiID id = 0;
int columns_count = 0;
if (sscanf(name, "0x%08X,%d", &id, &columns_count) < 2)
return NULL;
if (ImGuiTableSettings* settings = ImGui::TableSettingsFindByID(id))
{
if (settings->ColumnsCountMax >= columns_count)
{
TableSettingsInit(settings, id, columns_count, settings->ColumnsCountMax); // Recycle
return settings;
}
settings->ID = 0; // Invalidate storage, we won't fit because of a count change
}
return ImGui::TableSettingsCreate(id, columns_count);
}
static void TableSettingsHandler_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line)
{
// "Column 0 UserID=0x42AD2D21 Width=100 Visible=1 Order=0 Sort=0v"
ImGuiTableSettings* settings = (ImGuiTableSettings*)entry;
float f = 0.0f;
int column_n = 0, r = 0, n = 0;
if (sscanf(line, "RefScale=%f", &f) == 1) { settings->RefScale = f; return; }
if (sscanf(line, "Column %d%n", &column_n, &r) == 1)
{
if (column_n < 0 || column_n >= settings->ColumnsCount)
return;
line = ImStrSkipBlank(line + r);
char c = 0;
ImGuiTableColumnSettings* column = settings->GetColumnSettings() + column_n;
column->Index = (ImGuiTableColumnIdx)column_n;
if (sscanf(line, "UserID=0x%08X%n", (ImU32*)&n, &r)==1) { line = ImStrSkipBlank(line + r); column->UserID = (ImGuiID)n; }
if (sscanf(line, "Width=%d%n", &n, &r) == 1) { line = ImStrSkipBlank(line + r); column->WidthOrWeight = (float)n; column->IsStretch = 0; settings->SaveFlags |= ImGuiTableFlags_Resizable; }
if (sscanf(line, "Weight=%f%n", &f, &r) == 1) { line = ImStrSkipBlank(line + r); column->WidthOrWeight = f; column->IsStretch = 1; settings->SaveFlags |= ImGuiTableFlags_Resizable; }
if (sscanf(line, "Visible=%d%n", &n, &r) == 1) { line = ImStrSkipBlank(line + r); column->IsEnabled = (ImU8)n; settings->SaveFlags |= ImGuiTableFlags_Hideable; }
if (sscanf(line, "Order=%d%n", &n, &r) == 1) { line = ImStrSkipBlank(line + r); column->DisplayOrder = (ImGuiTableColumnIdx)n; settings->SaveFlags |= ImGuiTableFlags_Reorderable; }
if (sscanf(line, "Sort=%d%c%n", &n, &c, &r) == 2) { line = ImStrSkipBlank(line + r); column->SortOrder = (ImGuiTableColumnIdx)n; column->SortDirection = (c == '^') ? ImGuiSortDirection_Descending : ImGuiSortDirection_Ascending; settings->SaveFlags |= ImGuiTableFlags_Sortable; }
}
}
static void TableSettingsHandler_WriteAll(ImGuiContext* ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf)
{
ImGuiContext& g = *ctx;
for (ImGuiTableSettings* settings = g.SettingsTables.begin(); settings != NULL; settings = g.SettingsTables.next_chunk(settings))
{
if (settings->ID == 0) // Skip ditched settings
continue;
// TableSaveSettings() may clear some of those flags when we establish that the data can be stripped
// (e.g. Order was unchanged)
const bool save_size = (settings->SaveFlags & ImGuiTableFlags_Resizable) != 0;
const bool save_visible = (settings->SaveFlags & ImGuiTableFlags_Hideable) != 0;
const bool save_order = (settings->SaveFlags & ImGuiTableFlags_Reorderable) != 0;
const bool save_sort = (settings->SaveFlags & ImGuiTableFlags_Sortable) != 0;
if (!save_size && !save_visible && !save_order && !save_sort)
continue;
buf->reserve(buf->size() + 30 + settings->ColumnsCount * 50); // ballpark reserve
buf->appendf("[%s][0x%08X,%d]\n", handler->TypeName, settings->ID, settings->ColumnsCount);
if (settings->RefScale != 0.0f)
buf->appendf("RefScale=%g\n", settings->RefScale);
ImGuiTableColumnSettings* column = settings->GetColumnSettings();
for (int column_n = 0; column_n < settings->ColumnsCount; column_n++, column++)
{
// "Column 0 UserID=0x42AD2D21 Width=100 Visible=1 Order=0 Sort=0v"
buf->appendf("Column %-2d", column_n);
if (column->UserID != 0) buf->appendf(" UserID=%08X", column->UserID);
if (save_size && column->IsStretch) buf->appendf(" Weight=%.4f", column->WidthOrWeight);
if (save_size && !column->IsStretch) buf->appendf(" Width=%d", (int)column->WidthOrWeight);
if (save_visible) buf->appendf(" Visible=%d", column->IsEnabled);
if (save_order) buf->appendf(" Order=%d", column->DisplayOrder);
if (save_sort && column->SortOrder != -1) buf->appendf(" Sort=%d%c", column->SortOrder, (column->SortDirection == ImGuiSortDirection_Ascending) ? 'v' : '^');
buf->append("\n");
}
buf->append("\n");
}
}
void ImGui::TableSettingsInstallHandler(ImGuiContext* context)
{
ImGuiContext& g = *context;
ImGuiSettingsHandler ini_handler;
ini_handler.TypeName = "Table";
ini_handler.TypeHash = ImHashStr("Table");
ini_handler.ClearAllFn = TableSettingsHandler_ClearAll;
ini_handler.ReadOpenFn = TableSettingsHandler_ReadOpen;
ini_handler.ReadLineFn = TableSettingsHandler_ReadLine;
ini_handler.ApplyAllFn = TableSettingsHandler_ApplyAll;
ini_handler.WriteAllFn = TableSettingsHandler_WriteAll;
g.SettingsHandlers.push_back(ini_handler);
}
//-------------------------------------------------------------------------
// [SECTION] Tables: Garbage Collection
//-------------------------------------------------------------------------
// - TableRemove() [Internal]
// - TableGcCompactTransientBuffers() [Internal]
// - TableGcCompactSettings() [Internal]
//-------------------------------------------------------------------------
// Remove Table (currently only used by TestEngine)
void ImGui::TableRemove(ImGuiTable* table)
{
//IMGUI_DEBUG_LOG("TableRemove() id=0x%08X\n", table->ID);
ImGuiContext& g = *GImGui;
int table_idx = g.Tables.GetIndex(table);
//memset(table->RawData.Data, 0, table->RawData.size_in_bytes());
//memset(table, 0, sizeof(ImGuiTable));
g.Tables.Remove(table->ID, table);
g.TablesLastTimeActive[table_idx] = -1.0f;
}
// Free up/compact internal Table buffers for when it gets unused
void ImGui::TableGcCompactTransientBuffers(ImGuiTable* table)
{
//IMGUI_DEBUG_LOG("TableGcCompactTransientBuffers() id=0x%08X\n", table->ID);
ImGuiContext& g = *GImGui;
IM_ASSERT(table->MemoryCompacted == false);
table->DrawSplitter.ClearFreeMemory();
table->SortSpecsMulti.clear();
table->SortSpecs.Specs = NULL;
table->IsSortSpecsDirty = true;
table->ColumnsNames.clear();
table->MemoryCompacted = true;
for (int n = 0; n < table->ColumnsCount; n++)
table->Columns[n].NameOffset = -1;
g.TablesLastTimeActive[g.Tables.GetIndex(table)] = -1.0f;
}
// Compact and remove unused settings data (currently only used by TestEngine)
void ImGui::TableGcCompactSettings()
{
ImGuiContext& g = *GImGui;
int required_memory = 0;
for (ImGuiTableSettings* settings = g.SettingsTables.begin(); settings != NULL; settings = g.SettingsTables.next_chunk(settings))
if (settings->ID != 0)
required_memory += (int)TableSettingsCalcChunkSize(settings->ColumnsCount);
if (required_memory == g.SettingsTables.Buf.Size)
return;
ImChunkStream<ImGuiTableSettings> new_chunk_stream;
new_chunk_stream.Buf.reserve(required_memory);
for (ImGuiTableSettings* settings = g.SettingsTables.begin(); settings != NULL; settings = g.SettingsTables.next_chunk(settings))
if (settings->ID != 0)
memcpy(new_chunk_stream.alloc_chunk(TableSettingsCalcChunkSize(settings->ColumnsCount)), settings, TableSettingsCalcChunkSize(settings->ColumnsCount));
g.SettingsTables.swap(new_chunk_stream);
}
//-------------------------------------------------------------------------
// [SECTION] Tables: Debugging
//-------------------------------------------------------------------------
// - DebugNodeTable() [Internal]
//-------------------------------------------------------------------------
#ifndef IMGUI_DISABLE_METRICS_WINDOW
void ImGui::DebugNodeTable(ImGuiTable* table)
{
char buf[512];
char* p = buf;
const char* buf_end = buf + IM_ARRAYSIZE(buf);
const bool is_active = (table->LastFrameActive >= ImGui::GetFrameCount() - 2); // Note that fully clipped early out scrolling tables will appear as inactive here.
ImFormatString(p, buf_end - p, "Table 0x%08X (%d columns, in '%s')%s", table->ID, table->ColumnsCount, table->OuterWindow->Name, is_active ? "" : " *Inactive*");
if (!is_active) { PushStyleColor(ImGuiCol_Text, GetStyleColorVec4(ImGuiCol_TextDisabled)); }
bool open = TreeNode(table, "%s", buf);
if (!is_active) { PopStyleColor(); }
if (IsItemHovered())
GetForegroundDrawList()->AddRect(table->OuterRect.Min, table->OuterRect.Max, IM_COL32(255, 255, 0, 255));
if (!open)
return;
bool clear_settings = SmallButton("Clear settings");
BulletText("OuterRect: Pos: (%.1f,%.1f) Size: (%.1f,%.1f)", table->OuterRect.Min.x, table->OuterRect.Min.y, table->OuterRect.GetWidth(), table->OuterRect.GetHeight());
BulletText("ColumnsWidth: %.1f, AutoFitWidth: %.1f, InnerWidth: %.1f%s", table->ColumnsTotalWidth, table->ColumnsAutoFitWidth, table->InnerWidth, table->InnerWidth == 0.0f ? " (auto)" : "");
BulletText("CellPaddingX: %.1f, CellSpacingX: %.1f/%.1f, OuterPaddingX: %.1f", table->CellPaddingX, table->CellSpacingX1, table->CellSpacingX2, table->OuterPaddingX);
BulletText("HoveredColumnBody: %d, HoveredColumnBorder: %d", table->HoveredColumnBody, table->HoveredColumnBorder);
BulletText("ResizedColumn: %d, ReorderColumn: %d, HeldHeaderColumn: %d", table->ResizedColumn, table->ReorderColumn, table->HeldHeaderColumn);
//BulletText("BgDrawChannels: %d/%d", 0, table->BgDrawChannelUnfrozen);
float sum_weights = 0.0f;
for (int n = 0; n < table->ColumnsCount; n++)
if (table->Columns[n].Flags & ImGuiTableColumnFlags_WidthStretch)
sum_weights += table->Columns[n].StretchWeight;
for (int n = 0; n < table->ColumnsCount; n++)
{
ImGuiTableColumn* column = &table->Columns[n];
const char* name = TableGetColumnName(table, n);
ImFormatString(buf, IM_ARRAYSIZE(buf),
"Column %d order %d name '%s': offset %+.2f to %+.2f\n"
"Enabled: %d, VisibleX/Y: %d/%d, RequestOutput: %d, SkipItems: %d, DrawChannels: %d,%d\n"
"WidthGiven: %.1f, Request/Auto: %.1f/%.1f, StretchWeight: %.3f (%.1f%%)\n"
"MinX: %.1f, MaxX: %.1f (%+.1f), ClipRect: %.1f to %.1f (+%.1f)\n"
"ContentWidth: %.1f,%.1f, HeadersUsed/Ideal %.1f/%.1f\n"
"Sort: %d%s, UserID: 0x%08X, Flags: 0x%04X: %s%s%s%s..",
n, column->DisplayOrder, name, column->MinX - table->WorkRect.Min.x, column->MaxX - table->WorkRect.Min.x,
column->IsEnabled, column->IsVisibleX, column->IsVisibleY, column->IsRequestOutput, column->IsSkipItems, column->DrawChannelFrozen, column->DrawChannelUnfrozen,
column->WidthGiven, column->WidthRequest, column->WidthAuto, column->StretchWeight, (column->StretchWeight / sum_weights) * 100.0f,
column->MinX, column->MaxX, column->MaxX - column->MinX, column->ClipRect.Min.x, column->ClipRect.Max.x, column->ClipRect.Max.x - column->ClipRect.Min.x,
column->ContentMaxXFrozen - column->WorkMinX, column->ContentMaxXUnfrozen - column->WorkMinX, column->ContentMaxXHeadersUsed - column->WorkMinX, column->ContentMaxXHeadersIdeal - column->WorkMinX,
column->SortOrder, (column->SortDirection == ImGuiSortDirection_Ascending) ? " (Asc)" : (column->SortDirection == ImGuiSortDirection_Descending) ? " (Des)" : "", column->UserID, column->Flags,
(column->Flags & ImGuiTableColumnFlags_WidthStretch) ? "WidthStretch " : "",
(column->Flags & ImGuiTableColumnFlags_WidthFixed) ? "WidthFixed " : "",
(column->Flags & ImGuiTableColumnFlags_WidthAutoResize) ? "WidthAutoResize " : "",
(column->Flags & ImGuiTableColumnFlags_NoResize) ? "NoResize " : "");
Bullet();
Selectable(buf);
if (IsItemHovered())
{
ImRect r(column->MinX, table->OuterRect.Min.y, column->MaxX, table->OuterRect.Max.y);
GetForegroundDrawList()->AddRect(r.Min, r.Max, IM_COL32(255, 255, 0, 255));
}
}
if (ImGuiTableSettings* settings = TableGetBoundSettings(table))
DebugNodeTableSettings(settings);
if (clear_settings)
table->IsResetAllRequest = true;
TreePop();
}
void ImGui::DebugNodeTableSettings(ImGuiTableSettings* settings)
{
if (!TreeNode((void*)(intptr_t)settings->ID, "Settings 0x%08X (%d columns)", settings->ID, settings->ColumnsCount))
return;
BulletText("SaveFlags: 0x%08X", settings->SaveFlags);
BulletText("ColumnsCount: %d (max %d)", settings->ColumnsCount, settings->ColumnsCountMax);
for (int n = 0; n < settings->ColumnsCount; n++)
{
ImGuiTableColumnSettings* column_settings = &settings->GetColumnSettings()[n];
ImGuiSortDirection sort_dir = (column_settings->SortOrder != -1) ? (ImGuiSortDirection)column_settings->SortDirection : ImGuiSortDirection_None;
BulletText("Column %d Order %d SortOrder %d %s Vis %d %s %7.3f UserID 0x%08X",
n, column_settings->DisplayOrder, column_settings->SortOrder,
(sort_dir == ImGuiSortDirection_Ascending) ? "Asc" : (sort_dir == ImGuiSortDirection_Descending) ? "Des" : "---",
column_settings->IsEnabled, column_settings->IsStretch ? "Weight" : "Width ", column_settings->WidthOrWeight, column_settings->UserID);
}
TreePop();
}
#else // #ifndef IMGUI_DISABLE_METRICS_WINDOW
void ImGui::DebugNodeTable(ImGuiTable*) {}
void ImGui::DebugNodeTableSettings(ImGuiTableSettings*) {}
#endif
//-------------------------------------------------------------------------
// [SECTION] Columns, BeginColumns, EndColumns, etc.
// (This is a legacy API, prefer using BeginTable/EndTable!)
//-------------------------------------------------------------------------
// FIXME: sizing is lossy when columns width is very small (default width may turn negative etc.)
//-------------------------------------------------------------------------
// - SetWindowClipRectBeforeSetChannel() [Internal]
// - GetColumnIndex()
// - GetColumnsCount()
// - GetColumnOffset()
// - GetColumnWidth()
// - SetColumnOffset()
// - SetColumnWidth()
// - PushColumnClipRect() [Internal]
// - PushColumnsBackground() [Internal]
// - PopColumnsBackground() [Internal]
// - FindOrCreateColumns() [Internal]
// - GetColumnsID() [Internal]
// - BeginColumns()
// - NextColumn()
// - EndColumns()
// - Columns()
//-------------------------------------------------------------------------
// [Internal] Small optimization to avoid calls to PopClipRect/SetCurrentChannel/PushClipRect in sequences,
// they would meddle many times with the underlying ImDrawCmd.
// Instead, we do a preemptive overwrite of clipping rectangle _without_ altering the command-buffer and let
// the subsequent single call to SetCurrentChannel() does it things once.
void ImGui::SetWindowClipRectBeforeSetChannel(ImGuiWindow* window, const ImRect& clip_rect)
{
ImVec4 clip_rect_vec4 = clip_rect.ToVec4();
window->ClipRect = clip_rect;
window->DrawList->_CmdHeader.ClipRect = clip_rect_vec4;
window->DrawList->_ClipRectStack.Data[window->DrawList->_ClipRectStack.Size - 1] = clip_rect_vec4;
}
int ImGui::GetColumnIndex()
{
ImGuiWindow* window = GetCurrentWindowRead();
return window->DC.CurrentColumns ? window->DC.CurrentColumns->Current : 0;
}
int ImGui::GetColumnsCount()
{
ImGuiWindow* window = GetCurrentWindowRead();
return window->DC.CurrentColumns ? window->DC.CurrentColumns->Count : 1;
}
float ImGui::GetColumnOffsetFromNorm(const ImGuiOldColumns* columns, float offset_norm)
{
return offset_norm * (columns->OffMaxX - columns->OffMinX);
}
float ImGui::GetColumnNormFromOffset(const ImGuiOldColumns* columns, float offset)
{
return offset / (columns->OffMaxX - columns->OffMinX);
}
static const float COLUMNS_HIT_RECT_HALF_WIDTH = 4.0f;
static float GetDraggedColumnOffset(ImGuiOldColumns* columns, int column_index)
{
// Active (dragged) column always follow mouse. The reason we need this is that dragging a column to the right edge of an auto-resizing
// window creates a feedback loop because we store normalized positions. So while dragging we enforce absolute positioning.
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
IM_ASSERT(column_index > 0); // We are not supposed to drag column 0.
IM_ASSERT(g.ActiveId == columns->ID + ImGuiID(column_index));
float x = g.IO.MousePos.x - g.ActiveIdClickOffset.x + COLUMNS_HIT_RECT_HALF_WIDTH - window->Pos.x;
x = ImMax(x, ImGui::GetColumnOffset(column_index - 1) + g.Style.ColumnsMinSpacing);
if ((columns->Flags & ImGuiOldColumnFlags_NoPreserveWidths))
x = ImMin(x, ImGui::GetColumnOffset(column_index + 1) - g.Style.ColumnsMinSpacing);
return x;
}
float ImGui::GetColumnOffset(int column_index)
{
ImGuiWindow* window = GetCurrentWindowRead();
ImGuiOldColumns* columns = window->DC.CurrentColumns;
if (columns == NULL)
return 0.0f;
if (column_index < 0)
column_index = columns->Current;
IM_ASSERT(column_index < columns->Columns.Size);
const float t = columns->Columns[column_index].OffsetNorm;
const float x_offset = ImLerp(columns->OffMinX, columns->OffMaxX, t);
return x_offset;
}
static float GetColumnWidthEx(ImGuiOldColumns* columns, int column_index, bool before_resize = false)
{
if (column_index < 0)
column_index = columns->Current;
float offset_norm;
if (before_resize)
offset_norm = columns->Columns[column_index + 1].OffsetNormBeforeResize - columns->Columns[column_index].OffsetNormBeforeResize;
else
offset_norm = columns->Columns[column_index + 1].OffsetNorm - columns->Columns[column_index].OffsetNorm;
return ImGui::GetColumnOffsetFromNorm(columns, offset_norm);
}
float ImGui::GetColumnWidth(int column_index)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
ImGuiOldColumns* columns = window->DC.CurrentColumns;
if (columns == NULL)
return GetContentRegionAvail().x;
if (column_index < 0)
column_index = columns->Current;
return GetColumnOffsetFromNorm(columns, columns->Columns[column_index + 1].OffsetNorm - columns->Columns[column_index].OffsetNorm);
}
void ImGui::SetColumnOffset(int column_index, float offset)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
ImGuiOldColumns* columns = window->DC.CurrentColumns;
IM_ASSERT(columns != NULL);
if (column_index < 0)
column_index = columns->Current;
IM_ASSERT(column_index < columns->Columns.Size);
const bool preserve_width = !(columns->Flags & ImGuiOldColumnFlags_NoPreserveWidths) && (column_index < columns->Count - 1);
const float width = preserve_width ? GetColumnWidthEx(columns, column_index, columns->IsBeingResized) : 0.0f;
if (!(columns->Flags & ImGuiOldColumnFlags_NoForceWithinWindow))
offset = ImMin(offset, columns->OffMaxX - g.Style.ColumnsMinSpacing * (columns->Count - column_index));
columns->Columns[column_index].OffsetNorm = GetColumnNormFromOffset(columns, offset - columns->OffMinX);
if (preserve_width)
SetColumnOffset(column_index + 1, offset + ImMax(g.Style.ColumnsMinSpacing, width));
}
void ImGui::SetColumnWidth(int column_index, float width)
{
ImGuiWindow* window = GetCurrentWindowRead();
ImGuiOldColumns* columns = window->DC.CurrentColumns;
IM_ASSERT(columns != NULL);
if (column_index < 0)
column_index = columns->Current;
SetColumnOffset(column_index + 1, GetColumnOffset(column_index) + width);
}
void ImGui::PushColumnClipRect(int column_index)
{
ImGuiWindow* window = GetCurrentWindowRead();
ImGuiOldColumns* columns = window->DC.CurrentColumns;
if (column_index < 0)
column_index = columns->Current;
ImGuiOldColumnData* column = &columns->Columns[column_index];
PushClipRect(column->ClipRect.Min, column->ClipRect.Max, false);
}
// Get into the columns background draw command (which is generally the same draw command as before we called BeginColumns)
void ImGui::PushColumnsBackground()
{
ImGuiWindow* window = GetCurrentWindowRead();
ImGuiOldColumns* columns = window->DC.CurrentColumns;
if (columns->Count == 1)
return;
// Optimization: avoid SetCurrentChannel() + PushClipRect()
columns->HostBackupClipRect = window->ClipRect;
SetWindowClipRectBeforeSetChannel(window, columns->HostInitialClipRect);
columns->Splitter.SetCurrentChannel(window->DrawList, 0);
}
void ImGui::PopColumnsBackground()
{
ImGuiWindow* window = GetCurrentWindowRead();
ImGuiOldColumns* columns = window->DC.CurrentColumns;
if (columns->Count == 1)
return;
// Optimization: avoid PopClipRect() + SetCurrentChannel()
SetWindowClipRectBeforeSetChannel(window, columns->HostBackupClipRect);
columns->Splitter.SetCurrentChannel(window->DrawList, columns->Current + 1);
}
ImGuiOldColumns* ImGui::FindOrCreateColumns(ImGuiWindow* window, ImGuiID id)
{
// We have few columns per window so for now we don't need bother much with turning this into a faster lookup.
for (int n = 0; n < window->ColumnsStorage.Size; n++)
if (window->ColumnsStorage[n].ID == id)
return &window->ColumnsStorage[n];
window->ColumnsStorage.push_back(ImGuiOldColumns());
ImGuiOldColumns* columns = &window->ColumnsStorage.back();
columns->ID = id;
return columns;
}
ImGuiID ImGui::GetColumnsID(const char* str_id, int columns_count)
{
ImGuiWindow* window = GetCurrentWindow();
// Differentiate column ID with an arbitrary prefix for cases where users name their columns set the same as another widget.
// In addition, when an identifier isn't explicitly provided we include the number of columns in the hash to make it uniquer.
PushID(0x11223347 + (str_id ? 0 : columns_count));
ImGuiID id = window->GetID(str_id ? str_id : "columns");
PopID();
return id;
}
void ImGui::BeginColumns(const char* str_id, int columns_count, ImGuiOldColumnFlags flags)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = GetCurrentWindow();
IM_ASSERT(columns_count >= 1);
IM_ASSERT(window->DC.CurrentColumns == NULL); // Nested columns are currently not supported
// Acquire storage for the columns set
ImGuiID id = GetColumnsID(str_id, columns_count);
ImGuiOldColumns* columns = FindOrCreateColumns(window, id);
IM_ASSERT(columns->ID == id);
columns->Current = 0;
columns->Count = columns_count;
columns->Flags = flags;
window->DC.CurrentColumns = columns;
columns->HostCursorPosY = window->DC.CursorPos.y;
columns->HostCursorMaxPosX = window->DC.CursorMaxPos.x;
columns->HostInitialClipRect = window->ClipRect;
columns->HostBackupParentWorkRect = window->ParentWorkRect;
window->ParentWorkRect = window->WorkRect;
// Set state for first column
// We aim so that the right-most column will have the same clipping width as other after being clipped by parent ClipRect
const float column_padding = g.Style.ItemSpacing.x;
const float half_clip_extend_x = ImFloor(ImMax(window->WindowPadding.x * 0.5f, window->WindowBorderSize));
const float max_1 = window->WorkRect.Max.x + column_padding - ImMax(column_padding - window->WindowPadding.x, 0.0f);
const float max_2 = window->WorkRect.Max.x + half_clip_extend_x;
columns->OffMinX = window->DC.Indent.x - column_padding + ImMax(column_padding - window->WindowPadding.x, 0.0f);
columns->OffMaxX = ImMax(ImMin(max_1, max_2) - window->Pos.x, columns->OffMinX + 1.0f);
columns->LineMinY = columns->LineMaxY = window->DC.CursorPos.y;
// Clear data if columns count changed
if (columns->Columns.Size != 0 && columns->Columns.Size != columns_count + 1)
columns->Columns.resize(0);
// Initialize default widths
columns->IsFirstFrame = (columns->Columns.Size == 0);
if (columns->Columns.Size == 0)
{
columns->Columns.reserve(columns_count + 1);
for (int n = 0; n < columns_count + 1; n++)
{
ImGuiOldColumnData column;
column.OffsetNorm = n / (float)columns_count;
columns->Columns.push_back(column);
}
}
for (int n = 0; n < columns_count; n++)
{
// Compute clipping rectangle
ImGuiOldColumnData* column = &columns->Columns[n];
float clip_x1 = IM_ROUND(window->Pos.x + GetColumnOffset(n));
float clip_x2 = IM_ROUND(window->Pos.x + GetColumnOffset(n + 1) - 1.0f);
column->ClipRect = ImRect(clip_x1, -FLT_MAX, clip_x2, +FLT_MAX);
column->ClipRect.ClipWithFull(window->ClipRect);
}
if (columns->Count > 1)
{
columns->Splitter.Split(window->DrawList, 1 + columns->Count);
columns->Splitter.SetCurrentChannel(window->DrawList, 1);
PushColumnClipRect(0);
}
// We don't generally store Indent.x inside ColumnsOffset because it may be manipulated by the user.
float offset_0 = GetColumnOffset(columns->Current);
float offset_1 = GetColumnOffset(columns->Current + 1);
float width = offset_1 - offset_0;
PushItemWidth(width * 0.65f);
window->DC.ColumnsOffset.x = ImMax(column_padding - window->WindowPadding.x, 0.0f);
window->DC.CursorPos.x = IM_FLOOR(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);
window->WorkRect.Max.x = window->Pos.x + offset_1 - column_padding;
}
void ImGui::NextColumn()
{
ImGuiWindow* window = GetCurrentWindow();
if (window->SkipItems || window->DC.CurrentColumns == NULL)
return;
ImGuiContext& g = *GImGui;
ImGuiOldColumns* columns = window->DC.CurrentColumns;
if (columns->Count == 1)
{
window->DC.CursorPos.x = IM_FLOOR(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);
IM_ASSERT(columns->Current == 0);
return;
}
// Next column
if (++columns->Current == columns->Count)
columns->Current = 0;
PopItemWidth();
// Optimization: avoid PopClipRect() + SetCurrentChannel() + PushClipRect()
// (which would needlessly attempt to update commands in the wrong channel, then pop or overwrite them),
ImGuiOldColumnData* column = &columns->Columns[columns->Current];
SetWindowClipRectBeforeSetChannel(window, column->ClipRect);
columns->Splitter.SetCurrentChannel(window->DrawList, columns->Current + 1);
const float column_padding = g.Style.ItemSpacing.x;
columns->LineMaxY = ImMax(columns->LineMaxY, window->DC.CursorPos.y);
if (columns->Current > 0)
{
// Columns 1+ ignore IndentX (by canceling it out)
// FIXME-COLUMNS: Unnecessary, could be locked?
window->DC.ColumnsOffset.x = GetColumnOffset(columns->Current) - window->DC.Indent.x + column_padding;
}
else
{
// New row/line: column 0 honor IndentX.
window->DC.ColumnsOffset.x = ImMax(column_padding - window->WindowPadding.x, 0.0f);
columns->LineMinY = columns->LineMaxY;
}
window->DC.CursorPos.x = IM_FLOOR(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);
window->DC.CursorPos.y = columns->LineMinY;
window->DC.CurrLineSize = ImVec2(0.0f, 0.0f);
window->DC.CurrLineTextBaseOffset = 0.0f;
// FIXME-COLUMNS: Share code with BeginColumns() - move code on columns setup.
float offset_0 = GetColumnOffset(columns->Current);
float offset_1 = GetColumnOffset(columns->Current + 1);
float width = offset_1 - offset_0;
PushItemWidth(width * 0.65f);
window->WorkRect.Max.x = window->Pos.x + offset_1 - column_padding;
}
void ImGui::EndColumns()
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = GetCurrentWindow();
ImGuiOldColumns* columns = window->DC.CurrentColumns;
IM_ASSERT(columns != NULL);
PopItemWidth();
if (columns->Count > 1)
{
PopClipRect();
columns->Splitter.Merge(window->DrawList);
}
const ImGuiOldColumnFlags flags = columns->Flags;
columns->LineMaxY = ImMax(columns->LineMaxY, window->DC.CursorPos.y);
window->DC.CursorPos.y = columns->LineMaxY;
if (!(flags & ImGuiOldColumnFlags_GrowParentContentsSize))
window->DC.CursorMaxPos.x = columns->HostCursorMaxPosX; // Restore cursor max pos, as columns don't grow parent
// Draw columns borders and handle resize
// The IsBeingResized flag ensure we preserve pre-resize columns width so back-and-forth are not lossy
bool is_being_resized = false;
if (!(flags & ImGuiOldColumnFlags_NoBorder) && !window->SkipItems)
{
// We clip Y boundaries CPU side because very long triangles are mishandled by some GPU drivers.
const float y1 = ImMax(columns->HostCursorPosY, window->ClipRect.Min.y);
const float y2 = ImMin(window->DC.CursorPos.y, window->ClipRect.Max.y);
int dragging_column = -1;
for (int n = 1; n < columns->Count; n++)
{
ImGuiOldColumnData* column = &columns->Columns[n];
float x = window->Pos.x + GetColumnOffset(n);
const ImGuiID column_id = columns->ID + ImGuiID(n);
const float column_hit_hw = COLUMNS_HIT_RECT_HALF_WIDTH;
const ImRect column_hit_rect(ImVec2(x - column_hit_hw, y1), ImVec2(x + column_hit_hw, y2));
KeepAliveID(column_id);
if (IsClippedEx(column_hit_rect, column_id, false))
continue;
bool hovered = false, held = false;
if (!(flags & ImGuiOldColumnFlags_NoResize))
{
ButtonBehavior(column_hit_rect, column_id, &hovered, &held);
if (hovered || held)
g.MouseCursor = ImGuiMouseCursor_ResizeEW;
if (held && !(column->Flags & ImGuiOldColumnFlags_NoResize))
dragging_column = n;
}
// Draw column
const ImU32 col = GetColorU32(held ? ImGuiCol_SeparatorActive : hovered ? ImGuiCol_SeparatorHovered : ImGuiCol_Separator);
const float xi = IM_FLOOR(x);
window->DrawList->AddLine(ImVec2(xi, y1 + 1.0f), ImVec2(xi, y2), col);
}
// Apply dragging after drawing the column lines, so our rendered lines are in sync with how items were displayed during the frame.
if (dragging_column != -1)
{
if (!columns->IsBeingResized)
for (int n = 0; n < columns->Count + 1; n++)
columns->Columns[n].OffsetNormBeforeResize = columns->Columns[n].OffsetNorm;
columns->IsBeingResized = is_being_resized = true;
float x = GetDraggedColumnOffset(columns, dragging_column);
SetColumnOffset(dragging_column, x);
}
}
columns->IsBeingResized = is_being_resized;
window->WorkRect = window->ParentWorkRect;
window->ParentWorkRect = columns->HostBackupParentWorkRect;
window->DC.CurrentColumns = NULL;
window->DC.ColumnsOffset.x = 0.0f;
window->DC.CursorPos.x = IM_FLOOR(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);
}
void ImGui::Columns(int columns_count, const char* id, bool border)
{
ImGuiWindow* window = GetCurrentWindow();
IM_ASSERT(columns_count >= 1);
ImGuiOldColumnFlags flags = (border ? 0 : ImGuiOldColumnFlags_NoBorder);
//flags |= ImGuiOldColumnFlags_NoPreserveWidths; // NB: Legacy behavior
ImGuiOldColumns* columns = window->DC.CurrentColumns;
if (columns != NULL && columns->Count == columns_count && columns->Flags == flags)
return;
if (columns != NULL)
EndColumns();
if (columns_count != 1)
BeginColumns(id, columns_count, flags);
}
//-------------------------------------------------------------------------
#endif // #ifndef IMGUI_DISABLE
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