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Tabs: when scrolling is enabled, track selected tabs when resizing down parent container. (#3421, #8800)

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ocornut
2025-07-31 23:39:44 +09:00
parent 3ef6c8410a
commit 320c94bfaa
3 changed files with 10 additions and 0 deletions
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6
imgui_widgets.cpp
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@@ -9555,6 +9555,10 @@ static void ImGui::TabBarLayout(ImGuiTabBar* tab_bar)
ImGuiContext& g = *GImGui;
tab_bar->WantLayout = false;
// Track selected tab when resizing our parent down
const bool scroll_to_selected_tab = (tab_bar->BarRectPrevWidth > tab_bar->BarRect.GetWidth());
tab_bar->BarRectPrevWidth = tab_bar->BarRect.GetWidth();
// Garbage collect by compacting list
// Detect if we need to sort out tab list (e.g. in rare case where a tab changed section)
int tab_dst_n = 0;
@@ -9693,6 +9697,8 @@ static void ImGui::TabBarLayout(ImGuiTabBar* tab_bar)
if ((scroll_and_select_tab->Flags & ImGuiTabItemFlags_Button) == 0)
tab_bar->SelectedTabId = scroll_to_tab_id;
}
if (scroll_to_tab_id == 0 && scroll_to_selected_tab)
scroll_to_tab_id = tab_bar->SelectedTabId;
// Shrink widths if full tabs don't fit in their allocated space
float section_0_w = sections[0].Width + sections[0].Spacing;