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Tables: fixed an issue reporting ideal size to parent window/container when both scrollbars are visible but only one of ScrollX/ScrollY was explicitly requested. (#9352, #7651)

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Since ScrollX de-facto also enables ScrollY we can't gate accounting for ScrollbarSizes.x based on explicit ScrollY.
Amend a31aa683f
This commit is contained in:
ocornut
2026-04-08 15:07:11 +02:00
parent c0e6580b62
commit 4d38508c6b
2 changed files with 7 additions and 5 deletions
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3
docs/CHANGELOG.txt
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@@ -46,6 +46,9 @@ Other Changes:
- InputText:
- InputTextMultiline: fixed an issue processing deactivation logic when an active
multi-line edit is clipped due to being out of view.
- Tables:
- Fixed an issue reporting ideal size to parent window/container when both scrollbars
are visible but only one of ScrollX/ScrollY was explicitly requested. (#9352, #7651)
- Fonts:
- imgui_freetype: add FreeType headers & compiled version in 'About Dear ImGui' details.
- Clipper:

9
imgui_tables.cpp
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@@ -1565,11 +1565,10 @@ void ImGui::EndTable()
}
else if (temp_data->UserOuterSize.x <= 0.0f)
{
// Some references for this: #7651 + tests "table_reported_size", "table_reported_size_outer" equivalent Y block
// - Checking for ImGuiTableFlags_ScrollX/ScrollY flag makes us a frame ahead when disabling those flags.
// - FIXME-TABLE: Would make sense to pre-compute expected scrollbar visibility/sizes to generally save a frame of feedback.
// Some references for this: #7651 + tests "table_reported_size", "table_reported_size_outer" equivalent Y block, #9352
// - FIXME-TABLE: Would make sense to pre-compute expected scrollbar visibility/sizes to generally save a frame of feedback?
const float inner_content_max_x = table->OuterRect.Min.x + table->ColumnsAutoFitWidth; // Slightly misleading name but used for code symmetry with inner_content_max_y
const float decoration_size = table->TempData->AngledHeadersExtraWidth + ((table->Flags & ImGuiTableFlags_ScrollY) ? inner_window->ScrollbarSizes.x : 0.0f);
const float decoration_size = table->TempData->AngledHeadersExtraWidth + ((inner_window != outer_window) ? inner_window->ScrollbarSizes.x : 0.0f);
outer_window->DC.IdealMaxPos.x = ImMax(outer_window->DC.IdealMaxPos.x, inner_content_max_x + decoration_size - temp_data->UserOuterSize.x);
outer_window->DC.CursorMaxPos.x = ImMax(backup_outer_max_pos.x, ImMin(table->OuterRect.Max.x, inner_content_max_x + decoration_size));
}
@@ -1579,7 +1578,7 @@ void ImGui::EndTable()
}
if (temp_data->UserOuterSize.y <= 0.0f)
{
const float decoration_size = (table->Flags & ImGuiTableFlags_ScrollX) ? inner_window->ScrollbarSizes.y : 0.0f;
const float decoration_size = (inner_window != outer_window ? inner_window->ScrollbarSizes.y : 0.0f);
outer_window->DC.IdealMaxPos.y = ImMax(outer_window->DC.IdealMaxPos.y, inner_content_max_y + decoration_size - temp_data->UserOuterSize.y);
outer_window->DC.CursorMaxPos.y = ImMax(backup_outer_max_pos.y, ImMin(table->OuterRect.Max.y, inner_content_max_y + decoration_size));
}