Method BeginTabBarEx

KBotExt/imgui/imgui_widgets.cpp:7552–7609

}

bool    ImGui::BeginTabBarEx(ImGuiTabBar* tab_bar, const ImRect& tab_bar_bb, ImGuiTabBarFlags flags)
{
	ImGuiContext& g = *GImGui;
	ImGuiWindow* window = g.CurrentWindow;
	if (window->SkipItems)
		return false;

	if ((flags & ImGuiTabBarFlags_DockNode) == 0)
		PushOverrideID(tab_bar->ID);

	// Add to stack
	g.CurrentTabBarStack.push_back(GetTabBarRefFromTabBar(tab_bar));
	g.CurrentTabBar = tab_bar;

	// Append with multiple BeginTabBar()/EndTabBar() pairs.
	tab_bar->BackupCursorPos = window->DC.CursorPos;
	if (tab_bar->CurrFrameVisible == g.FrameCount)
	{
		window->DC.CursorPos = ImVec2(tab_bar->BarRect.Min.x, tab_bar->BarRect.Max.y + tab_bar->ItemSpacingY);
		tab_bar->BeginCount++;
		return true;
	}

	// Ensure correct ordering when toggling ImGuiTabBarFlags_Reorderable flag, or when a new tab was added while being not reorderable
	if ((flags & ImGuiTabBarFlags_Reorderable) != (tab_bar->Flags & ImGuiTabBarFlags_Reorderable) || (tab_bar->TabsAddedNew && !(flags & ImGuiTabBarFlags_Reorderable)))
		ImQsort(tab_bar->Tabs.Data, tab_bar->Tabs.Size, sizeof(ImGuiTabItem), TabItemComparerByBeginOrder);
	tab_bar->TabsAddedNew = false;

	// Flags
	if ((flags & ImGuiTabBarFlags_FittingPolicyMask_) == 0)
		flags |= ImGuiTabBarFlags_FittingPolicyDefault_;

	tab_bar->Flags = flags;
	tab_bar->BarRect = tab_bar_bb;
	tab_bar->WantLayout = true; // Layout will be done on the first call to ItemTab()
	tab_bar->PrevFrameVisible = tab_bar->CurrFrameVisible;
	tab_bar->CurrFrameVisible = g.FrameCount;
	tab_bar->PrevTabsContentsHeight = tab_bar->CurrTabsContentsHeight;
	tab_bar->CurrTabsContentsHeight = 0.0f;
	tab_bar->ItemSpacingY = g.Style.ItemSpacing.y;
	tab_bar->FramePadding = g.Style.FramePadding;
	tab_bar->TabsActiveCount = 0;
	tab_bar->LastTabItemIdx = -1;
	tab_bar->BeginCount = 1;

	// Set cursor pos in a way which only be used in the off-chance the user erroneously submits item before BeginTabItem(): items will overlap
	window->DC.CursorPos = ImVec2(tab_bar->BarRect.Min.x, tab_bar->BarRect.Max.y + tab_bar->ItemSpacingY);

	// Draw separator
	const ImU32 col = GetColorU32((flags & ImGuiTabBarFlags_IsFocused) ? ImGuiCol_TabActive : ImGuiCol_TabUnfocusedActive);
	const float y = tab_bar->BarRect.Max.y - 1.0f;
	{
		const float separator_min_x = tab_bar->BarRect.Min.x - IM_FLOOR(window->WindowPadding.x * 0.5f);
		const float separator_max_x = tab_bar->BarRect.Max.x + IM_FLOOR(window->WindowPadding.x * 0.5f);
		window->DrawList->AddLine(ImVec2(separator_min_x, y), ImVec2(separator_max_x, y), col, 1.0f);
	}
	return true;
}