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TabBar: Recover if SelectedTabId doesn't exist anymore.

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This commit is contained in:
omar
2018-09-21 11:02:03 +02:00
parent 3e47978a80
commit 599d5f185c
2 changed files with 6 additions and 2 deletions
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7
imgui_widgets.cpp
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@ -5966,6 +5966,7 @@ static void ImGui::TabBarLayout(ImGuiTabBar* tab_bar)
// Compute ideal widths
float width_total_contents = 0.0f;
ImGuiTabItem* most_recently_selected_tab = NULL;
bool found_selected_tab_id = false;
for (int tab_n = 0; tab_n < tab_bar->Tabs.Size; tab_n++)
{
ImGuiTabItem* tab = &tab_bar->Tabs[tab_n];
@ -5973,6 +5974,8 @@ static void ImGui::TabBarLayout(ImGuiTabBar* tab_bar)
if (most_recently_selected_tab == NULL || most_recently_selected_tab->LastFrameSelected < tab->LastFrameSelected)
most_recently_selected_tab = tab;
if (tab->ID == tab_bar->SelectedTabId)
found_selected_tab_id = true;
// Refresh tab width immediately if we can (for manual tab bar, WidthContent will lag by one frame which is mostly noticeable when changing style.FramePadding.x)
// Additionally, when using TabBarAddTab() to manipulate tab bar order we occasionally insert new tabs that don't have a width yet,
@ -6043,7 +6046,9 @@ static void ImGui::TabBarLayout(ImGuiTabBar* tab_bar)
if (ImGuiTabItem* tab_to_select = TabBarScrollingButtons(tab_bar)) // NB: Will alter BarRect.Max.x!
scroll_track_selected_tab_id = tab_bar->SelectedTabId = tab_to_select->ID;
// If we have lost the selected tab, select the next most recently active one.
// If we have lost the selected tab, select the next most recently active one
if (found_selected_tab_id == false)
tab_bar->SelectedTabId = 0;
if (tab_bar->SelectedTabId == 0 && tab_bar->NextSelectedTabId == 0 && most_recently_selected_tab != NULL)
scroll_track_selected_tab_id = tab_bar->SelectedTabId = most_recently_selected_tab->ID;