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Misc: Fixed PushItemWidth(-width) (for right-side alignment) laying out certain items (button, listbox, etc.) with negative sizes if the 'width' argument was smaller than the available width at the time of item submission,

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This commit is contained in:
omar 2019-04-18 15:35:20 +02:00
parent a1cf7d636d
commit 0e46d65b03
2 changed files with 5 additions and 2 deletions
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2
docs/CHANGELOG.txt
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@ -53,6 +53,8 @@ Other Changes:
- Window: Window close button is horizontally aligned with style.FramePadding.x.
- Columns: Fixed boundary of clipping being off by 1 pixel within the left column.
- Combo, Slider, Scrollbar: Improve rendering in situation when there's only a few pixels available (<3 pixels).
- Misc: Fixed PushItemWidth(-width) (for right-side alignment) laying out certain items (button, listbox, etc.)
with negative sizes if the 'width' argument was smaller than the available width at the time of item submission,
- Misc: Added IM_MALLOC/IM_FREE macros mimicking IM_NEW/IM_DELETE so user doesn't need to revert
to using the ImGui::MemAlloc()/MemFree() calls directly.
- Metrics: Added "Show windows rectangles" tool to visualize the different rectangles.

5
imgui.cpp
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@ -5789,6 +5789,7 @@ float ImGui::CalcItemWidth()
// [Internal] Calculate full item size given user provided 'size' parameter and default width/height. Default width is often == CalcItemWidth().
// Those two functions CalcItemWidth vs CalcItemSize are awkwardly named because they are not fully symmetrical.
// Note that only CalcItemWidth() is publicly exposed.
// The 4.0f here may be changed to match CalcItemWidth() and/or BeginChild() (right now we have a mismatch which is harmless but undesirable)
ImVec2 ImGui::CalcItemSize(ImVec2 size, float default_w, float default_h)
{
ImGuiWindow* window = GImGui->CurrentWindow;
@ -5800,12 +5801,12 @@ ImVec2 ImGui::CalcItemSize(ImVec2 size, float default_w, float default_h)
if (size.x == 0.0f)
size.x = default_w;
else if (size.x < 0.0f)
size.x = ImMax(4.0f, region_max.x - window->DC.CursorPos.x) + size.x;
size.x = ImMax(4.0f, region_max.x - window->DC.CursorPos.x + size.x);
if (size.y == 0.0f)
size.y = default_h;
else if (size.y < 0.0f)
size.y = ImMax(4.0f, region_max.y - window->DC.CursorPos.y) + size.y;
size.y = ImMax(4.0f, region_max.y - window->DC.CursorPos.y + size.y);
return size;
}