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TabBar: Tweak shrinking policy so that while resizing tabs that don't need shrinking keep their initial width more precisely.
Has been the case before but adding support for SetNextItemWidth() #5262 made this more noticeable.
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@ -106,6 +106,8 @@ Other Changes:
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- Inputs: Fixed IsMouseClicked() repeat mode rate being half of keyboard repeat rate.
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- ColorEdit: Fixed text baseline alignment after a SameLine() after a ColorEdit() with visible label.
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- TabBar: TabItem() now reacts to SetNextItemWidth() and SetNextItemOpen(true). (#5262)
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- TabBar: Tweak shrinking policy so that while resizing tabs that don't need shrinking keep their
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initial width more precisely (without the occasional +1 worth of width).
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- Menus: Adjusted BeginMenu() closing logic so hovering void or non-MenuItem() in parent window
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always lead to menu closure. Fixes using items that are not MenuItem() or BeginItem() at the root
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level of a popup with a child menu opened.
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@ -1150,6 +1150,7 @@ struct ImGuiShrinkWidthItem
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{
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int Index;
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float Width;
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float InitialWidth;
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};
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struct ImGuiPtrOrIndex
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@ -1540,7 +1540,7 @@ void ImGui::ShrinkWidths(ImGuiShrinkWidthItem* items, int count, float width_exc
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width_excess -= width_to_remove_per_item * count_same_width;
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}
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// Round width and redistribute remainder left-to-right (could make it an option of the function?)
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// Round width and redistribute remainder
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// Ensure that e.g. the right-most tab of a shrunk tab-bar always reaches exactly at the same distance from the right-most edge of the tab bar separator.
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width_excess = 0.0f;
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for (int n = 0; n < count; n++)
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@ -1549,10 +1549,13 @@ void ImGui::ShrinkWidths(ImGuiShrinkWidthItem* items, int count, float width_exc
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width_excess += items[n].Width - width_rounded;
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items[n].Width = width_rounded;
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}
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if (width_excess > 0.0f)
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while (width_excess > 0.0f)
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for (int n = 0; n < count; n++)
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if (items[n].Index < (int)(width_excess + 0.01f))
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if (items[n].Width + 1.0f <= items[n].InitialWidth)
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{
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items[n].Width += 1.0f;
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width_excess -= 1.0f;
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}
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}
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//-------------------------------------------------------------------------
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@ -7557,9 +7560,9 @@ static void ImGui::TabBarLayout(ImGuiTabBar* tab_bar)
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// Store data so we can build an array sorted by width if we need to shrink tabs down
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IM_MSVC_WARNING_SUPPRESS(6385);
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int shrink_buffer_index = shrink_buffer_indexes[section_n]++;
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g.ShrinkWidthBuffer[shrink_buffer_index].Index = tab_n;
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g.ShrinkWidthBuffer[shrink_buffer_index].Width = tab->ContentWidth;
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ImGuiShrinkWidthItem* shrink_width_item = &g.ShrinkWidthBuffer[shrink_buffer_indexes[section_n]++];
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shrink_width_item->Index = tab_n;
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shrink_width_item->Width = shrink_width_item->InitialWidth = tab->ContentWidth;
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IM_ASSERT(tab->ContentWidth > 0.0f);
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tab->Width = tab->ContentWidth;
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