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ListBoxHeader: In version taking height in number of items, made vertical padding consistent regardless of if (items_count <= height_in_items) or not.

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Demo: Tweaks.
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ocornut
2021-02-03 14:55:17 +01:00
parent e5cbf60def
commit 6f6d4e0b70
3 changed files with 12 additions and 15 deletions
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10
imgui_widgets.cpp
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@ -6177,15 +6177,9 @@ bool ImGui::ListBoxHeader(const char* label, const ImVec2& size_arg)
// FIXME: In principle this function should be called BeginListBox(). We should rename it after re-evaluating if we want to keep the same signature.
bool ImGui::ListBoxHeader(const char* label, int items_count, int height_in_items)
{
// Size default to hold ~7.25 items.
// We add +25% worth of item height to allow the user to see at a glance if there are more items up/down, without looking at the scrollbar.
// We don't add this extra bit if items_count <= height_in_items. It is slightly dodgy, because it means a dynamic list of items will make the widget resize occasionally when it crosses that size.
// I am expecting that someone will come and complain about this behavior in a remote future, then we can advise on a better solution.
// If height_in_items == -1, default height is maximum 7.
ImGuiContext& g = *GImGui;
if (height_in_items < 0)
height_in_items = ImMin(items_count, 7);
float height_in_items_f = (height_in_items < items_count) ? (height_in_items + 0.25f) : (height_in_items + 0.00f);
float height_in_items_f = (height_in_items < 0 ? ImMin(items_count, 7) : height_in_items) + 0.25f;
ImVec2 size;
size.x = 0.0f;
size.y = GetTextLineHeightWithSpacing() * height_in_items_f + g.Style.FramePadding.y * 2.0f;