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Windows: separating WindowItemStatusFlags from ChildItemStatusFlag, because IsItemXXX _after_ BeginChild()>Begin() shouldn't return last status emitted by e.g. EndChild()

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As IsItemXXX() after is specced as returning title bar data we don't want to lock ourselves up from adding them to child window (e.g. MDI idea using windows to host child windows).
This commit is contained in:
ocornut 2025-01-27 14:39:26 +01:00
parent 134fbe1245
commit a05d547ae8
2 changed files with 3 additions and 2 deletions
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4
imgui.cpp
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@ -4714,7 +4714,7 @@ static void ImGui::SetLastItemDataForWindow(ImGuiWindow* window, const ImRect& r
static void ImGui::SetLastItemDataForChildWindowItem(ImGuiWindow* window, const ImRect& rect)
{
ImGuiContext& g = *GImGui;
SetLastItemData(window->ChildId, g.CurrentItemFlags, window->DC.WindowItemStatusFlags, rect);
SetLastItemData(window->ChildId, g.CurrentItemFlags, window->DC.ChildItemStatusFlags, rect);
}
float ImGui::CalcWrapWidthForPos(const ImVec2& pos, float wrap_pos_x)
@ -6170,7 +6170,7 @@ void ImGui::EndChild()
}
if (g.HoveredWindow == child_window)
g.LastItemData.StatusFlags |= ImGuiItemStatusFlags_HoveredWindow;
child_window->DC.WindowItemStatusFlags = g.LastItemData.StatusFlags;
child_window->DC.ChildItemStatusFlags = g.LastItemData.StatusFlags;
//SetLastItemDataForChildWindowItem(child_window, child_window->Rect()); // Not needed, effectively done by ItemAdd()
}
else

1
imgui_internal.h
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@ -2457,6 +2457,7 @@ struct IMGUI_API ImGuiWindowTempData
ImGuiLayoutType ParentLayoutType; // Layout type of parent window at the time of Begin()
ImU32 ModalDimBgColor;
ImGuiItemStatusFlags WindowItemStatusFlags;
ImGuiItemStatusFlags ChildItemStatusFlags;
// Local parameters stacks
// We store the current settings outside of the vectors to increase memory locality (reduce cache misses). The vectors are rarely modified. Also it allows us to not heap allocate for short-lived windows which are not using those settings.