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TabBar: Improved scroll target when clicking a Tab that is larger than the scrolling region width.

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The margin that is useful to indicate other tabs being available gets in the way of visibility in this case.
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ocornut 2026-09-14 19:04:23 +02:00
parent ea60e7b748
commit c8b9f0d6be
3 changed files with 7 additions and 2 deletions
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4
imgui_widgets.cpp
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@ -10460,8 +10460,10 @@ static void ImGui::TabBarScrollToTab(ImGuiTabBar* tab_bar, ImGuiID tab_id, ImGui
if (tab->Flags & ImGuiTabItemFlags_SectionMask_)
return;
// When scrolling to make Tab N+1 visible always make a bit of N visible to suggest more scrolling area (since we don't have a scrollbar)
// Disable the margin if the scrolling section is too small for the target tab: prefer displaying a maximum of the label.
ImGuiContext& g = *GImGui;
float margin = g.FontSize * 1.0f; // When to scroll to make Tab N+1 visible always make a bit of N visible to suggest more scrolling area (since we don't have a scrollbar)
float margin = ImClamp(tab_bar->ScrollingRectMaxX - tab_bar->ScrollingRectMinX - tab->Width, g.Style.ItemInnerSpacing.x, g.FontSize * 1.0f);
int order = TabBarGetTabOrder(tab_bar, tab);
// Scrolling happens only in the central section (leading/trailing sections are not scrolling)