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Clipper: use line size instead of cursor comparaison when range are large. (#3609, #3962 + https://github.com/ocornut/imgui_club/issues/20)

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ocornut 2021-12-06 16:20:53 +01:00
parent a76bc52da5
commit 027a7ba3eb
3 changed files with 8 additions and 1 deletions
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6
imgui.cpp
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@ -2471,17 +2471,23 @@ bool ImGuiListClipper::Step()
if (ItemsHeight <= 0.0f)
{
IM_ASSERT(data->StepNo == 1);
bool affected_by_floating_point_precision = false;
if (table)
{
const float pos_y1 = table->RowPosY1; // Using RowPosY1 instead of StartPosY to handle clipper straddling the frozen row
const float pos_y2 = table->RowPosY2; // Using RowPosY2 instead of CursorPos.y to take account of tallest cell.
ItemsHeight = pos_y2 - pos_y1;
window->DC.CursorPos.y = pos_y2;
affected_by_floating_point_precision = ImIsFloatAboveGuaranteedIntegerPrecision(pos_y1) || ImIsFloatAboveGuaranteedIntegerPrecision(pos_y2);
}
else
{
ItemsHeight = (window->DC.CursorPos.y - StartPosY) / (float)(DisplayEnd - DisplayStart);
affected_by_floating_point_precision = ImIsFloatAboveGuaranteedIntegerPrecision(StartPosY) || ImIsFloatAboveGuaranteedIntegerPrecision(window->DC.CursorPos.y);
}
if (affected_by_floating_point_precision)
ItemsHeight = window->DC.PrevLineSize.y + g.Style.ItemSpacing.y; // FIXME: Technically wouldn't allow multi-line entries.
IM_ASSERT(ItemsHeight > 0.0f && "Unable to calculate item height! First item hasn't moved the cursor vertically!");
calc_clipping = true; // If item height had to be calculated, calculate clipping afterwards.
}

2
imgui.h
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@ -64,7 +64,7 @@ Index of this file:
// Version
// (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY99 then bounce up to XYY00, XYY01 etc. when release tagging happens)
#define IMGUI_VERSION "1.86 WIP"
#define IMGUI_VERSION_NUM 18515
#define IMGUI_VERSION_NUM 18516
#define IMGUI_CHECKVERSION() ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert), sizeof(ImDrawIdx))
#define IMGUI_HAS_TABLE

1
imgui_internal.h
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@ -448,6 +448,7 @@ static inline float ImDot(const ImVec2& a, const ImVec2& b)
static inline ImVec2 ImRotate(const ImVec2& v, float cos_a, float sin_a) { return ImVec2(v.x * cos_a - v.y * sin_a, v.x * sin_a + v.y * cos_a); }
static inline float ImLinearSweep(float current, float target, float speed) { if (current < target) return ImMin(current + speed, target); if (current > target) return ImMax(current - speed, target); return current; }
static inline ImVec2 ImMul(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(lhs.x * rhs.x, lhs.y * rhs.y); }
static inline bool ImIsFloatAboveGuaranteedIntegerPrecision(float f) { return f <= -16777216 || f >= 16777216; }
IM_MSVC_RUNTIME_CHECKS_RESTORE
// Helpers: Geometry