Method ShrinkWidths

KBotExt/imgui/imgui_widgets.cpp:1610–1649

Shrink excess width from a set of item, by removing width from the larger items first. Set items Width to -1.0f to disable shrinking this item.

// Shrink excess width from a set of item, by removing width from the larger items first.
// Set items Width to -1.0f to disable shrinking this item.
void ImGui::ShrinkWidths(ImGuiShrinkWidthItem* items, int count, float width_excess)
{
	if (count == 1)
	{
		if (items[0].Width >= 0.0f)
			items[0].Width = ImMax(items[0].Width - width_excess, 1.0f);
		return;
	}
	ImQsort(items, (size_t)count, sizeof(ImGuiShrinkWidthItem), ShrinkWidthItemComparer);
	int count_same_width = 1;
	while (width_excess > 0.0f && count_same_width < count)
	{
		while (count_same_width < count && items[0].Width <= items[count_same_width].Width)
			count_same_width++;
		float max_width_to_remove_per_item = (count_same_width < count && items[count_same_width].Width >= 0.0f) ? (items[0].Width - items[count_same_width].Width) : (items[0].Width - 1.0f);
		if (max_width_to_remove_per_item <= 0.0f)
			break;
		float width_to_remove_per_item = ImMin(width_excess / count_same_width, max_width_to_remove_per_item);
		for (int item_n = 0; item_n < count_same_width; item_n++)
			items[item_n].Width -= width_to_remove_per_item;
		width_excess -= width_to_remove_per_item * count_same_width;
	}

	// Round width and redistribute remainder
	// Ensure that e.g. the right-most tab of a shrunk tab-bar always reaches exactly at the same distance from the right-most edge of the tab bar separator.
	width_excess = 0.0f;
	for (int n = 0; n < count; n++)
	{
		float width_rounded = ImFloor(items[n].Width);
		width_excess += items[n].Width - width_rounded;
		items[n].Width = width_rounded;
	}
	while (width_excess > 0.0f)
		for (int n = 0; n < count && width_excess > 0.0f; n++)
		{
			float width_to_add = ImMin(items[n].InitialWidth - items[n].Width, 1.0f);
			items[n].Width += width_to_add;
			width_excess -= width_to_add;
		}
}

//-------------------------------------------------------------------------
// [SECTION] Widgets: ComboBox