mirror/imgui
1
0
Fork 0
mirror of https://github.com/ocornut/imgui.git synced 2024-11-27 16:29:02 +08:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

InputTextMultiline() WIP - still gazillion problems with selection visualisation & scrolling

Browse Source
This commit is contained in:
ocornut 2015-06-16 15:46:45 -06:00
parent 6eb1fec7a9
commit 0df7b472c2
2 changed files with 155 additions and 97 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

242
imgui.cpp
View File

@ -495,6 +495,7 @@ namespace IMGUI_STB_NAMESPACE
#undef STB_TEXTEDIT_CHARTYPE
#define STB_TEXTEDIT_STRING ImGuiTextEditState
#define STB_TEXTEDIT_CHARTYPE ImWchar
#define STB_TEXTEDIT_GETWIDTH_NEWLINE -1.0f
#include "stb_textedit.h"
#ifdef __clang__
@ -1187,7 +1188,7 @@ struct ImGuiTextEditState
char InitialText[1024*3+1]; // backup of end-user buffer at the time of focus (in UTF-8, unaltered)
size_t CurLenA, CurLenW; // we need to maintain our buffer length in both UTF-8 and wchar format.
size_t BufSizeA; // end-user buffer size, <= 1024 (or increase above)
float Width; // widget width
ImVec2 Size; // widget width/height
float ScrollX;
STB_TexteditState StbState;
float CursorAnim;
@ -1201,7 +1202,7 @@ struct ImGuiTextEditState
void CursorAnimReset() { CursorAnim = -0.30f; } // After a user-input the cursor stays on for a while without blinking
bool CursorIsVisible() const { return CursorAnim <= 0.0f || fmodf(CursorAnim, 1.20f) <= 0.80f; } // Blinking
bool HasSelection() const { return StbState.select_start != StbState.select_end; }
void SelectAll() { StbState.select_start = 0; StbState.select_end = (int)ImStrlenW(Text); StbState.cursor = StbState.select_end; StbState.has_preferred_x = false; }
void SelectAll() { StbState.select_start = 0; StbState.select_end = (int)CurLenW; StbState.cursor = StbState.select_end; StbState.has_preferred_x = false; }
void OnKeyPressed(int key);
void UpdateScrollOffset();
@ -1209,8 +1210,8 @@ struct ImGuiTextEditState
// Static functions because they are used to render non-focused instances of a text input box
static const char* GetTextPointerClippedA(ImFont* font, float font_size, const char* text, float width, ImVec2* out_text_size = NULL);
static const ImWchar* GetTextPointerClippedW(ImFont* font, float font_size, const ImWchar* text, float width, ImVec2* out_text_size = NULL);
static void RenderTextScrolledClipped(ImFont* font, float font_size, const char* text, ImVec2 pos_base, float width, float scroll_x);
static const ImWchar* GetTextPointerClippedW(ImFont* font, float font_size, const ImWchar* text, const ImWchar* text_end, float width, ImVec2* out_text_size = NULL);
static void RenderTextScrolledClipped(ImFont* font, float font_size, const char* text, const ImVec2& pos, const ImVec2& size, float scroll_x);
};
// Data saved in imgui.ini file
@ -6511,16 +6512,71 @@ bool ImGui::RadioButton(const char* label, int* v, int v_button)
return pressed;
}
static ImVec2 CalcTextSizeW(ImFont* font, float font_size, float max_width, const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL, ImVec2* out_offset = NULL, bool stop_on_new_line = false)
{
IM_ASSERT(text_end);
const float scale = font_size / font->FontSize;
const float line_height = font->FontSize * scale;
ImVec2 text_size = ImVec2(0,0);
float line_width = 0.0f;
const ImWchar* s = text_begin;
while (s < text_end)
{
const unsigned int c = (unsigned int)(*s++);
if (c < 32)
{
if (c == '\n')
{
text_size.x = ImMax(text_size.x, line_width);
text_size.y += line_height;
line_width = 0.0f;
if (stop_on_new_line)
break;
continue;
}
if (c == '\r')
continue;
}
const float char_width = font->GetCharAdvance((unsigned short)c);
if (line_width + char_width >= max_width)
{
s--;
break;
}
line_width += char_width;
}
if (text_size.x < line_width)
text_size.x = line_width;
if (out_offset)
*out_offset = ImVec2(line_width, text_size.y + line_height); // offset allow for the possibility of sitting after a trailing \n
if (line_width > 0 || text_size.y == 0.0f) // whereas size.y will ignore the trailing \n
text_size.y += line_height;
if (remaining)
*remaining = s;
return text_size;
}
// Wrapper for stb_textedit.h to edit text (our wrapper is for: statically sized buffer, single-line, wchar characters. InputText converts between UTF-8 and wchar)
static int STB_TEXTEDIT_STRINGLEN(const STB_TEXTEDIT_STRING* obj) { return (int)ImStrlenW(obj->Text); }
static int STB_TEXTEDIT_STRINGLEN(const STB_TEXTEDIT_STRING* obj) { return (int)obj->CurLenW; }
static ImWchar STB_TEXTEDIT_GETCHAR(const STB_TEXTEDIT_STRING* obj, int idx) { return obj->Text[idx]; }
static float STB_TEXTEDIT_GETWIDTH(STB_TEXTEDIT_STRING* obj, int line_start_idx, int char_idx) { (void)line_start_idx; return obj->Font->CalcTextSizeW(obj->FontSize, FLT_MAX, &obj->Text[char_idx], &obj->Text[char_idx]+1, NULL).x; }
static float STB_TEXTEDIT_GETWIDTH(STB_TEXTEDIT_STRING* obj, int line_start_idx, int char_idx) { ImWchar* s = &obj->Text[line_start_idx+char_idx]; if (*s == '\n') return STB_TEXTEDIT_GETWIDTH_NEWLINE; return CalcTextSizeW(obj->Font, obj->FontSize, FLT_MAX, s, s+1, NULL).x; }
static int STB_TEXTEDIT_KEYTOTEXT(int key) { return key >= 0x10000 ? 0 : key; }
static ImWchar STB_TEXTEDIT_NEWLINE = '\n';
static void STB_TEXTEDIT_LAYOUTROW(StbTexteditRow* r, STB_TEXTEDIT_STRING* obj, int line_start_idx)
{
const ImWchar* text_remaining = NULL;
const ImVec2 size = obj->Font->CalcTextSizeW(obj->FontSize, FLT_MAX, obj->Text + line_start_idx, NULL, &text_remaining);
const ImVec2 size = CalcTextSizeW(obj->Font, obj->FontSize, FLT_MAX, obj->Text + line_start_idx, obj->Text + obj->CurLenW, &text_remaining, NULL, true);
r->x0 = 0.0f;
r->x1 = size.x;
r->baseline_y_delta = size.y;
@ -6603,14 +6659,14 @@ void ImGuiTextEditState::OnKeyPressed(int key)
void ImGuiTextEditState::UpdateScrollOffset()
{
// Scroll in chunks of quarter width
const float scroll_x_increment = Width * 0.25f;
const float cursor_offset_x = Font->CalcTextSizeW(FontSize, FLT_MAX, Text, Text+StbState.cursor, NULL).x;
const float scroll_x_increment = Size.x * 0.25f;
const float cursor_offset_x = CalcTextSizeW(Font, FontSize, FLT_MAX, Text, Text+StbState.cursor, NULL).x;
// If widget became bigger than text (because of a resize), reset horizontal scrolling
if (ScrollX > 0.0f)
{
const float text_width = cursor_offset_x + Font->CalcTextSizeW(FontSize, FLT_MAX, Text+StbState.cursor, NULL, NULL).x;
if (text_width < Width)
const float text_width = cursor_offset_x + CalcTextSizeW(Font, FontSize, FLT_MAX, Text+StbState.cursor, NULL, NULL).x;
if (text_width < Size.x)
{
ScrollX = 0.0f;
return;
@ -6619,17 +6675,19 @@ void ImGuiTextEditState::UpdateScrollOffset()
if (cursor_offset_x < ScrollX)
ScrollX = ImMax(0.0f, cursor_offset_x - scroll_x_increment);
else if (cursor_offset_x - Width >= ScrollX)
ScrollX = cursor_offset_x - Width + scroll_x_increment;
else if (cursor_offset_x - Size.x >= ScrollX)
ScrollX = cursor_offset_x - Size.x + scroll_x_increment;
}
ImVec2 ImGuiTextEditState::CalcDisplayOffsetFromCharIdx(int i) const
{
const ImWchar* text_start = GetTextPointerClippedW(Font, FontSize, Text, ScrollX, NULL);
const ImWchar* text_start = GetTextPointerClippedW(Font, FontSize, Text, Text+CurLenW, ScrollX, NULL);
const ImWchar* text_end = (Text+i >= text_start) ? Text+i : text_start; // Clip if requested character is outside of display
IM_ASSERT(text_end >= text_start);
const ImVec2 offset = Font->CalcTextSizeW(FontSize, Width+1, text_start, text_end, NULL);
// FIXME-WIP-MULTILINE
ImVec2 offset;
CalcTextSizeW(Font, FontSize, Size.x+1, text_start, text_end, NULL, &offset);
return offset;
}
@ -6647,20 +6705,20 @@ const char* ImGuiTextEditState::GetTextPointerClippedA(ImFont* font, float font_
}
// [Static]
const ImWchar* ImGuiTextEditState::GetTextPointerClippedW(ImFont* font, float font_size, const ImWchar* text, float width, ImVec2* out_text_size)
const ImWchar* ImGuiTextEditState::GetTextPointerClippedW(ImFont* font, float font_size, const ImWchar* text, const ImWchar* text_end, float width, ImVec2* out_text_size)
{
if (width <= 0.0f)
return text;
const ImWchar* text_clipped_end = NULL;
const ImVec2 text_size = font->CalcTextSizeW(font_size, width, text, NULL, &text_clipped_end);
const ImVec2 text_size = CalcTextSizeW(font, font_size, width, text, text_end, &text_clipped_end);
if (out_text_size)
*out_text_size = text_size;
return text_clipped_end;
}
// [Static]
void ImGuiTextEditState::RenderTextScrolledClipped(ImFont* font, float font_size, const char* buf, ImVec2 pos, float width, float scroll_x)
void ImGuiTextEditState::RenderTextScrolledClipped(ImFont* font, float font_size, const char* buf, const ImVec2& pos, const ImVec2& size, float scroll_x)
{
ImGuiWindow* window = GetCurrentWindow();
const ImU32 font_color = window->Color(ImGuiCol_Text);
@ -6669,7 +6727,7 @@ void ImGuiTextEditState::RenderTextScrolledClipped(ImFont* font, float font_size
// Determine start and end of visible string
// FIXME-OPT: This is pretty slow for what it does.
const char* text_start = scroll_x <= 0.0f ? buf : GetTextPointerClippedA(font, font_size, buf, scroll_x, NULL);
const char* text_end = GetTextPointerClippedA(font, font_size, text_start, width + 1, NULL); // +1 to allow character spacing to fit outside the allowed width
const char* text_end = GetTextPointerClippedA(font, font_size, text_start, size.x + 1, NULL); // +1 to allow character spacing to fit outside the allowed width
window->DrawList->AddText(font, font_size, pos, font_color, text_start, text_end);
// Log as text
@ -6793,7 +6851,13 @@ static bool InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags f
unsigned int c = *p_char;
if (c < 128 && c != ' ' && !isprint((int)(c & 0xFF)))
return false;
{
bool pass = false;
pass |= (c == '\n' && (flags & ImGuiInputTextFlags_Multiline));
pass |= (c == '\t' && (flags & ImGuiInputTextFlags_AllowTabInput));
if (!pass)
return false;
}
if (c >= 0xE000 && c <= 0xF8FF) // Filter private Unicode range. I don't imagine anybody would want to input them. GLFW on OSX seems to send private characters for special keys like arrow keys.
return false;
@ -6836,21 +6900,30 @@ static bool InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags f
}
// Edit a string of text
bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputTextFlags flags, ImGuiTextEditCallback callback, void* user_data)
static bool InputTextEx(const char* label, char* buf, size_t buf_size, const ImVec2& size_arg, ImGuiInputTextFlags flags, ImGuiTextEditCallback callback, void* user_data)
{
ImGuiWindow* window = GetCurrentWindow();
if (window->SkipItems)
return false;
IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackHistory) && (flags & ImGuiInputTextFlags_Multiline))); // Can't use both together (they both use up/down keys)
IM_ASSERT(!((flags & ImGuiInputTextFlags_CallbackCompletion) && (flags & ImGuiInputTextFlags_AllowTabInput))); // Can't use both together (they both use tab key)
ImGuiState& g = *GImGui;
const ImGuiIO& io = g.IO;
const ImGuiStyle& style = g.Style;
const ImGuiID id = window->GetID(label);
const float w = ImGui::CalcItemWidth();
const bool is_multiline = (flags & ImGuiInputTextFlags_Multiline) != 0;
const ImVec2 label_size = CalcTextSize(label, NULL, true);
const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y) + style.FramePadding*2.0f);
ImVec2 label_size = ImGui::CalcTextSize(label, NULL, true);
ImVec2 size = size_arg;
if (size.x == 0.0f)
size.x = ImGui::CalcItemWidth();
if (size.y == 0.0f)
size.y = is_multiline ? label_size.y * 8.0f : label_size.y; // Arbitrary default
const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size + style.FramePadding*2.0f);
const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? (style.ItemInnerSpacing.x + label_size.x) : 0.0f, 0.0f));
ItemSize(total_bb, style.FramePadding.y);
if (!ItemAdd(total_bb, &id))
@ -6862,7 +6935,7 @@ bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputT
const bool is_ctrl_down = io.KeyCtrl;
const bool is_shift_down = io.KeyShift;
const bool is_alt_down = io.KeyAlt;
const bool focus_requested = window->FocusItemRegister(g.ActiveId == id, (flags & ImGuiInputTextFlags_CallbackCompletion) == 0); // Using completion callback disable keyboard tabbing
const bool focus_requested = window->FocusItemRegister(g.ActiveId == id, (flags & (ImGuiInputTextFlags_CallbackCompletion|ImGuiInputTextFlags_AllowTabInput)) == 0); // Using completion callback disable keyboard tabbing
const bool focus_requested_by_code = focus_requested && (window->FocusIdxAllCounter == window->FocusIdxAllRequestCurrent);
const bool focus_requested_by_tab = focus_requested && !focus_requested_by_code;
@ -6886,7 +6959,7 @@ bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputT
const char* buf_end = NULL;
edit_state.CurLenW = ImTextStrFromUtf8(edit_state.Text, IM_ARRAYSIZE(edit_state.Text), buf, NULL, &buf_end);
edit_state.CurLenA = buf_end - buf; // We can't get the result from ImFormatString() above because it is not UTF-8 aware. Here we'll cut off malformed UTF-8.
edit_state.Width = w + style.FramePadding.x;
edit_state.Size = size + style.FramePadding;
edit_state.InputCursorScreenPos = ImVec2(-1.f,-1.f);
edit_state.CursorAnimReset();
@ -6894,7 +6967,7 @@ bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputT
{
edit_state.Id = id;
edit_state.ScrollX = 0.0f;
stb_textedit_initialize_state(&edit_state.StbState, true);
stb_textedit_initialize_state(&edit_state.StbState, !is_multiline);
if (focus_requested_by_code)
select_all = true;
}
@ -6931,7 +7004,7 @@ bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputT
//if (edit_state.Id == id) // Works, but double-click to select-all sets cursors to end which in turn tends to scroll toward the right when shrinking widget.
{
// Update some data if we are active or last active
edit_state.Width = w + style.FramePadding.x;
edit_state.Size = size + style.FramePadding;
edit_state.BufSizeA = buf_size;
edit_state.Font = g.Font;
edit_state.FontSize = g.FontSize;
@ -6941,7 +7014,7 @@ bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputT
{
// Edit in progress
const float mx = g.IO.MousePos.x - frame_bb.Min.x - style.FramePadding.x;
const float my = g.FontSize*0.5f; // Flatten mouse because we are doing a single-line edit
const float my = is_multiline ? (g.IO.MousePos.y - frame_bb.Min.y - style.FramePadding.y) : g.FontSize*0.5f;
if (select_all || (hovered && io.MouseDoubleClicked[0]))
{
@ -6966,8 +7039,7 @@ bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputT
// Process text input (before we check for Return because using some IME will effectively send a Return?)
for (int n = 0; n < IM_ARRAYSIZE(g.IO.InputCharacters) && g.IO.InputCharacters[n]; n++)
{
unsigned int c = (unsigned int)g.IO.InputCharacters[n];
if (c)
if (unsigned int c = (unsigned int)g.IO.InputCharacters[n])
{
// Insert character if they pass filtering
if (!InputTextFilterCharacter(&c, flags, callback, user_data))
@ -6982,13 +7054,35 @@ bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputT
const int k_mask = (is_shift_down ? STB_TEXTEDIT_K_SHIFT : 0);
const bool is_ctrl_only = is_ctrl_down && !is_alt_down && !is_shift_down;
if (IsKeyPressedMap(ImGuiKey_LeftArrow)) { edit_state.OnKeyPressed(is_ctrl_down ? STB_TEXTEDIT_K_WORDLEFT | k_mask : STB_TEXTEDIT_K_LEFT | k_mask); }
else if (IsKeyPressedMap(ImGuiKey_RightArrow)) { edit_state.OnKeyPressed(is_ctrl_down ? STB_TEXTEDIT_K_WORDRIGHT | k_mask : STB_TEXTEDIT_K_RIGHT | k_mask); }
else if (IsKeyPressedMap(ImGuiKey_Home)) { edit_state.OnKeyPressed(is_ctrl_down ? STB_TEXTEDIT_K_TEXTSTART | k_mask : STB_TEXTEDIT_K_LINESTART | k_mask); }
else if (IsKeyPressedMap(ImGuiKey_End)) { edit_state.OnKeyPressed(is_ctrl_down ? STB_TEXTEDIT_K_TEXTEND | k_mask : STB_TEXTEDIT_K_LINEEND | k_mask); }
else if (IsKeyPressedMap(ImGuiKey_Delete)) { edit_state.OnKeyPressed(STB_TEXTEDIT_K_DELETE | k_mask); }
else if (IsKeyPressedMap(ImGuiKey_Backspace)) { edit_state.OnKeyPressed(STB_TEXTEDIT_K_BACKSPACE | k_mask); }
else if (IsKeyPressedMap(ImGuiKey_Enter)) { SetActiveId(0); enter_pressed = true; }
if (IsKeyPressedMap(ImGuiKey_LeftArrow)) { edit_state.OnKeyPressed(is_ctrl_down ? STB_TEXTEDIT_K_WORDLEFT | k_mask : STB_TEXTEDIT_K_LEFT | k_mask); }
else if (IsKeyPressedMap(ImGuiKey_RightArrow)) { edit_state.OnKeyPressed(is_ctrl_down ? STB_TEXTEDIT_K_WORDRIGHT | k_mask : STB_TEXTEDIT_K_RIGHT | k_mask); }
else if (is_multiline && IsKeyPressedMap(ImGuiKey_UpArrow)) { edit_state.OnKeyPressed(STB_TEXTEDIT_K_UP | k_mask); }
else if (is_multiline && IsKeyPressedMap(ImGuiKey_DownArrow)) { edit_state.OnKeyPressed(STB_TEXTEDIT_K_DOWN| k_mask); }
else if (IsKeyPressedMap(ImGuiKey_Home)) { edit_state.OnKeyPressed(is_ctrl_down ? STB_TEXTEDIT_K_TEXTSTART | k_mask : STB_TEXTEDIT_K_LINESTART | k_mask); }
else if (IsKeyPressedMap(ImGuiKey_End)) { edit_state.OnKeyPressed(is_ctrl_down ? STB_TEXTEDIT_K_TEXTEND | k_mask : STB_TEXTEDIT_K_LINEEND | k_mask); }
else if (IsKeyPressedMap(ImGuiKey_Delete)) { edit_state.OnKeyPressed(STB_TEXTEDIT_K_DELETE | k_mask); }
else if (IsKeyPressedMap(ImGuiKey_Backspace)) { edit_state.OnKeyPressed(STB_TEXTEDIT_K_BACKSPACE | k_mask); }
else if (IsKeyPressedMap(ImGuiKey_Enter))
{
bool ctrl_enter_for_new_line = (flags & ImGuiInputTextFlags_CtrlEnterForNewLine) != 0;
if (!is_multiline || (ctrl_enter_for_new_line && !is_ctrl_down) || (!ctrl_enter_for_new_line && is_ctrl_down))
{
SetActiveId(0);
enter_pressed = true;
}
else // New line
{
unsigned int c = '\n';
if (InputTextFilterCharacter(&c, flags, callback, user_data))
edit_state.OnKeyPressed((int)c);
}
}
else if ((flags & ImGuiInputTextFlags_AllowTabInput) && IsKeyPressedMap(ImGuiKey_Tab))
{
unsigned int c = '\t';
if (InputTextFilterCharacter(&c, flags, callback, user_data))
edit_state.OnKeyPressed((int)c);
}
else if (IsKeyPressedMap(ImGuiKey_Escape)) { SetActiveId(0); cancel_edit = true; }
else if (is_ctrl_only && IsKeyPressedMap(ImGuiKey_Z)) { edit_state.OnKeyPressed(STB_TEXTEDIT_K_UNDO); }
else if (is_ctrl_only && IsKeyPressedMap(ImGuiKey_Y)) { edit_state.OnKeyPressed(STB_TEXTEDIT_K_REDO); }
@ -7146,7 +7240,7 @@ bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputT
//const float render_scroll_x = (g.ActiveId == id) ? edit_state.ScrollX : 0.0f;
const float render_scroll_x = (edit_state.Id == id) ? edit_state.ScrollX : 0.0f;
ImGuiTextEditState::RenderTextScrolledClipped(g.Font, g.FontSize, buf, frame_bb.Min + style.FramePadding, w + style.FramePadding.x, render_scroll_x);
ImGuiTextEditState::RenderTextScrolledClipped(g.Font, g.FontSize, buf, frame_bb.Min + style.FramePadding, size + style.FramePadding, render_scroll_x);
if (g.ActiveId == id)
{
@ -7172,6 +7266,19 @@ bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputT
return value_changed;
}
bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputTextFlags flags, ImGuiTextEditCallback callback, void* user_data)
{
IM_ASSERT(!(flags & ImGuiInputTextFlags_Multiline)); // call InputTextMultiline()
bool ret = InputTextEx(label, buf, buf_size, ImVec2(0,0), flags, callback, user_data);
return ret;
}
bool ImGui::InputTextMultiline(const char* label, char* buf, size_t buf_size, const ImVec2& size, ImGuiInputTextFlags flags, ImGuiTextEditCallback callback, void* user_data)
{
bool ret = InputTextEx(label, buf, buf_size, size, flags | ImGuiInputTextFlags_Multiline, callback, user_data);
return ret;
}
static bool InputFloatN(const char* label, float* v, int components, int decimal_precision, ImGuiInputTextFlags extra_flags)
{
ImGuiState& g = *GImGui;
@ -9874,64 +9981,11 @@ ImVec2 ImFont::CalcTextSizeA(float size, float max_width, float wrap_width, cons
line_width += char_width;
}
if (line_width > 0 || text_size.y == 0.0f)
{
if (text_size.x < line_width)
text_size.x = line_width;
text_size.y += line_height;
}
if (remaining)
*remaining = s;
return text_size;
}
ImVec2 ImFont::CalcTextSizeW(float size, float max_width, const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining) const
{
if (!text_end)
text_end = text_begin + ImStrlenW(text_begin);
const float scale = size / FontSize;
const float line_height = FontSize * scale;
ImVec2 text_size = ImVec2(0,0);
float line_width = 0.0f;
const ImWchar* s = text_begin;
while (s < text_end)
{
const unsigned int c = (unsigned int)(*s++);
if (c < 32)
{
if (c == '\n')
{
text_size.x = ImMax(text_size.x, line_width);
text_size.y += line_height;
line_width = 0.0f;
continue;
}
if (c == '\r')
continue;
}
const float char_width = ((size_t)c < IndexXAdvance.size()) ? IndexXAdvance[(size_t)c] * scale : FallbackXAdvance;
if (line_width + char_width >= max_width)
{
s--;
break;
}
line_width += char_width;
}
if (text_size.x < line_width)
text_size.x = line_width;
if (line_width > 0 || text_size.y == 0.0f)
{
if (text_size.x < line_width)
text_size.x = line_width;
text_size.y += line_height;
}
if (remaining)
*remaining = s;

10
imgui.h
View File

@ -267,6 +267,7 @@ namespace ImGui
// Widgets: Input
IMGUI_API bool InputText(const char* label, char* buf, size_t buf_size, ImGuiInputTextFlags flags = 0, ImGuiTextEditCallback callback = NULL, void* user_data = NULL);
IMGUI_API bool InputTextMultiline(const char* label, char* buf, size_t buf_size, const ImVec2& size = ImVec2(0,0), ImGuiInputTextFlags flags = 0, ImGuiTextEditCallback callback = NULL, void* user_data = NULL);
IMGUI_API bool InputFloat(const char* label, float* v, float step = 0.0f, float step_fast = 0.0f, int decimal_precision = -1, ImGuiInputTextFlags extra_flags = 0);
IMGUI_API bool InputFloat2(const char* label, float v[2], int decimal_precision = -1, ImGuiInputTextFlags extra_flags = 0);
IMGUI_API bool InputFloat3(const char* label, float v[3], int decimal_precision = -1, ImGuiInputTextFlags extra_flags = 0);
@ -441,7 +442,11 @@ enum ImGuiInputTextFlags_
ImGuiInputTextFlags_CallbackCompletion = 1 << 6, // Call user function on pressing TAB (for completion handling)
ImGuiInputTextFlags_CallbackHistory = 1 << 7, // Call user function on pressing Up/Down arrows (for history handling)
ImGuiInputTextFlags_CallbackAlways = 1 << 8, // Call user function every time
ImGuiInputTextFlags_CallbackCharFilter = 1 << 9 // Call user function to filter character. Modify data->EventChar to replace/filter input, or return 1 to discard character.
ImGuiInputTextFlags_CallbackCharFilter = 1 << 9, // Call user function to filter character. Modify data->EventChar to replace/filter input, or return 1 to discard character.
ImGuiInputTextFlags_AllowTabInput = 1 << 10, // Pressing TAB input a '\t' character into the text field
ImGuiInputTextFlags_CtrlEnterForNewLine = 1 << 11, // In multi-line mode, allow exiting edition by pressing Enter. Ctrl+Enter to add new line.
// [Internal]
ImGuiInputTextFlags_Multiline = 1 << 20 // For internal use by InputTextMultiline()
};
// Flags for ImGui::Selectable()
@ -1135,8 +1140,7 @@ struct ImFont
// 'max_width' stops rendering after a certain width (could be turned into a 2d size). FLT_MAX to disable.
// 'wrap_width' enable automatic word-wrapping across multiple lines to fit into given width. 0.0f to disable.
IMGUI_API ImVec2 CalcTextSizeA(float size, float max_width, float wrap_width, const char* text_begin, const char* text_end = NULL, const char** remaining = NULL) const; // utf8
IMGUI_API ImVec2 CalcTextSizeW(float size, float max_width, const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL) const; // wchar
IMGUI_API ImVec2 CalcTextSizeA(float size, float max_width, float wrap_width, const char* text_begin, const char* text_end = NULL, const char** remaining = NULL) const; // utf8
IMGUI_API void RenderText(float size, ImVec2 pos, ImU32 col, const ImVec4& clip_rect, const char* text_begin, const char* text_end, ImDrawList* draw_list, float wrap_width = 0.0f, const ImVec2* cpu_clip_max = NULL) const;
IMGUI_API const char* CalcWordWrapPositionA(float scale, const char* text, const char* text_end, float wrap_width) const;
};