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MultiSelect: Box-Select + Clipper: extend UnclipRect by ItemSpacing. (#7994, #8250, #7821, #7850, #7970)

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Amend 1ac469b50f
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ocornut
2026-04-16 23:32:34 +02:00
parent 2cbdb7a337
commit a2916923a1
3 changed files with 9 additions and 5 deletions
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imgui.cpp
+5 -3
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@@ -3454,12 +3454,14 @@ static bool ImGuiListClipper_StepInternal(ImGuiListClipper* clipper)
// FIXME: Selectable() use of half-ItemSpacing isn't consistent in matter of layout, as ItemAdd(bb) stray above ItemSize()'s CursorPos.
// RangeSelect's BoxSelect relies on comparing overlap of previous and current rectangle and is sensitive to that.
// As a workaround we currently half ItemSpacing worth on each side.
min_y -= g.Style.ItemSpacing.y;
max_y += g.Style.ItemSpacing.y;
float pad_y = g.Style.ItemSpacing.y;
min_y -= pad_y;
max_y += pad_y;
// Box-select on 2D area requires different clipping.
// (best adding pad_y here than in BeginBoxSelect() as we are closer to current state)
if (bs->UnclipMode)
data->Ranges.push_back(ImGuiListClipperRange::FromPositions(bs->UnclipRect.Min.y, bs->UnclipRect.Max.y, 0, 0));
data->Ranges.push_back(ImGuiListClipperRange::FromPositions(bs->UnclipRect.Min.y - pad_y, bs->UnclipRect.Max.y + pad_y, 0, 0));
}
// Add main visible range