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TabBar: Internals: add GetCurrentTabBar(), TabBarFindTabByOrder(), TabBarGetCurrentTab(), TabBarGetTabOrder(), TabBarGetTabName(), TabBarQueueFocus() + clear LastTabItemIdx on EndTabBar(). (#5853, #5997)

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ImGuiTabBar::GetTabOrder() -> TabBarGetTabOrder().
ImGuiTabBar::GetTabName() -> TabBarGetTabName()
This commit is contained in:
ocornut
2023-01-24 19:16:12 +01:00
parent 739a79b1e9
commit 3d8885cbbd
3 changed files with 61 additions and 28 deletions
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65
imgui_widgets.cpp
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@ -7282,11 +7282,17 @@ bool ImGui::MenuItem(const char* label, const char* shortcut, bool* p_selected,
// - TabBarCalcTabID() [Internal]
// - TabBarCalcMaxTabWidth() [Internal]
// - TabBarFindTabById() [Internal]
// - TabBarFindTabByOrder() [Internal]
// - TabBarGetCurrentTab() [Internal]
// - TabBarGetTabName() [Internal]
// - TabBarRemoveTab() [Internal]
// - TabBarCloseTab() [Internal]
// - TabBarScrollClamp() [Internal]
// - TabBarScrollToTab() [Internal]
// - TabBarQueueChangeTabOrder() [Internal]
// - TabBarQueueFocus() [Internal]
// - TabBarQueueReorder() [Internal]
// - TabBarProcessReorderFromMousePos() [Internal]
// - TabBarProcessReorder() [Internal]
// - TabBarScrollingButtons() [Internal]
// - TabBarTabListPopupButton() [Internal]
//-------------------------------------------------------------------------
@ -7411,6 +7417,7 @@ bool ImGui::BeginTabBarEx(ImGuiTabBar* tab_bar, const ImRect& tab_bar_bb, ImG
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
@ -7459,6 +7466,7 @@ void ImGui::EndTabBar()
if (tab_bar->BeginCount > 1)
window->DC.CursorPos = tab_bar->BackupCursorPos;
tab_bar->LastTabItemIdx = -1;
if ((tab_bar->Flags & ImGuiTabBarFlags_DockNode) == 0)
PopID();
@ -7568,7 +7576,7 @@ static void ImGui::TabBarLayout(ImGuiTabBar* tab_bar)
// Refresh tab width immediately, otherwise changes of style e.g. style.FramePadding.x would noticeably lag in the tab bar.
// Additionally, when using TabBarAddTab() to manipulate tab bar order we occasionally insert new tabs that don't have a width yet,
// and we cannot wait for the next BeginTabItem() call. We cannot compute this width within TabBarAddTab() because font size depends on the active window.
const char* tab_name = tab_bar->GetTabName(tab);
const char* tab_name = TabBarGetTabName(tab_bar, tab);
const bool has_close_button_or_unsaved_marker = (tab->Flags & ImGuiTabItemFlags_NoCloseButton) == 0 || (tab->Flags & ImGuiTabItemFlags_UnsavedDocument);
tab->ContentWidth = (tab->RequestedWidth >= 0.0f) ? tab->RequestedWidth : TabItemCalcSize(tab_name, has_close_button_or_unsaved_marker).x;
@ -7729,7 +7737,28 @@ ImGuiTabItem* ImGui::TabBarFindTabByID(ImGuiTabBar* tab_bar, ImGuiID tab_id)
return NULL;
}
// The *TabId fields be already set by the docking system _before_ the actual TabItem was created, so we clear them regardless.
// Order = visible order, not submission order! (which is tab->BeginOrder)
ImGuiTabItem* ImGui::TabBarFindTabByOrder(ImGuiTabBar* tab_bar, int order)
{
if (order < 0 || order >= tab_bar->Tabs.Size)
return NULL;
return &tab_bar->Tabs[order];
}
ImGuiTabItem* ImGui::TabBarGetCurrentTab(ImGuiTabBar* tab_bar)
{
if (tab_bar->LastTabItemIdx <= 0 || tab_bar->LastTabItemIdx >= tab_bar->Tabs.Size)
return NULL;
return &tab_bar->Tabs[tab_bar->LastTabItemIdx];
}
const char* ImGui::TabBarGetTabName(ImGuiTabBar* tab_bar, ImGuiTabItem* tab)
{
IM_ASSERT(tab->NameOffset != -1 && tab->NameOffset < tab_bar->TabsNames.Buf.Size);
return tab_bar->TabsNames.Buf.Data + tab->NameOffset;
}
// The *TabId fields are already set by the docking system _before_ the actual TabItem was created, so we clear them regardless.
void ImGui::TabBarRemoveTab(ImGuiTabBar* tab_bar, ImGuiID tab_id)
{
if (ImGuiTabItem* tab = TabBarFindTabByID(tab_bar, tab_id))
@ -7760,7 +7789,7 @@ void ImGui::TabBarCloseTab(ImGuiTabBar* tab_bar, ImGuiTabItem* tab)
{
// Actually select before expecting closure attempt (on an UnsavedDocument tab user is expect to e.g. show a popup)
if (tab_bar->VisibleTabId != tab->ID)
tab_bar->NextSelectedTabId = tab->ID;
TabBarQueueFocus(tab_bar, tab);
}
}
@ -7781,7 +7810,7 @@ static void ImGui::TabBarScrollToTab(ImGuiTabBar* tab_bar, ImGuiID tab_id, ImGui
ImGuiContext& g = *GImGui;
float margin = g.FontSize * 1.0f; // When to scroll to make Tab N+1 visible always make a bit of N visible to suggest more scrolling area (since we don't have a scrollbar)
int order = tab_bar->GetTabOrder(tab);
int order = TabBarGetTabOrder(tab_bar, tab);
// Scrolling happens only in the central section (leading/trailing sections are not scrolling)
// FIXME: This is all confusing.
@ -7805,7 +7834,12 @@ static void ImGui::TabBarScrollToTab(ImGuiTabBar* tab_bar, ImGuiID tab_id, ImGui
}
}
void ImGui::TabBarQueueReorder(ImGuiTabBar* tab_bar, const ImGuiTabItem* tab, int offset)
void ImGui::TabBarQueueFocus(ImGuiTabBar* tab_bar, ImGuiTabItem* tab)
{
tab_bar->NextSelectedTabId = tab->ID;
}
void ImGui::TabBarQueueReorder(ImGuiTabBar* tab_bar, ImGuiTabItem* tab, int offset)
{
IM_ASSERT(offset != 0);
IM_ASSERT(tab_bar->ReorderRequestTabId == 0);
@ -7813,7 +7847,7 @@ void ImGui::TabBarQueueReorder(ImGuiTabBar* tab_bar, const ImGuiTabItem* tab, in
tab_bar->ReorderRequestOffset = (ImS16)offset;
}
void ImGui::TabBarQueueReorderFromMousePos(ImGuiTabBar* tab_bar, const ImGuiTabItem* src_tab, ImVec2 mouse_pos)
void ImGui::TabBarQueueReorderFromMousePos(ImGuiTabBar* tab_bar, ImGuiTabItem* src_tab, ImVec2 mouse_pos)
{
ImGuiContext& g = *GImGui;
IM_ASSERT(tab_bar->ReorderRequestTabId == 0);
@ -7856,7 +7890,7 @@ bool ImGui::TabBarProcessReorder(ImGuiTabBar* tab_bar)
return false;
//IM_ASSERT(tab_bar->Flags & ImGuiTabBarFlags_Reorderable); // <- this may happen when using debug tools
int tab2_order = tab_bar->GetTabOrder(tab1) + tab_bar->ReorderRequestOffset;
int tab2_order = TabBarGetTabOrder(tab_bar, tab1) + tab_bar->ReorderRequestOffset;
if (tab2_order < 0 || tab2_order >= tab_bar->Tabs.Size)
return false;
@ -7916,7 +7950,7 @@ static ImGuiTabItem* ImGui::TabBarScrollingButtons(ImGuiTabBar* tab_bar)
if (select_dir != 0)
if (ImGuiTabItem* tab_item = TabBarFindTabByID(tab_bar, tab_bar->SelectedTabId))
{
int selected_order = tab_bar->GetTabOrder(tab_item);
int selected_order = TabBarGetTabOrder(tab_bar, tab_item);
int target_order = selected_order + select_dir;
// Skip tab item buttons until another tab item is found or end is reached
@ -7968,7 +8002,7 @@ static ImGuiTabItem* ImGui::TabBarTabListPopupButton(ImGuiTabBar* tab_bar)
if (tab->Flags & ImGuiTabItemFlags_Button)
continue;
const char* tab_name = tab_bar->GetTabName(tab);
const char* tab_name = TabBarGetTabName(tab_bar, tab);
if (Selectable(tab_name, tab_bar->SelectedTabId == tab->ID))
tab_to_select = tab;
}
@ -8132,9 +8166,9 @@ bool ImGui::TabItemEx(ImGuiTabBar* tab_bar, const char* label, bool* p_open,
{
if (tab_appearing && (tab_bar->Flags & ImGuiTabBarFlags_AutoSelectNewTabs) && tab_bar->NextSelectedTabId == 0)
if (!tab_bar_appearing || tab_bar->SelectedTabId == 0)
tab_bar->NextSelectedTabId = id; // New tabs gets activated
TabBarQueueFocus(tab_bar, tab); // New tabs gets activated
if ((flags & ImGuiTabItemFlags_SetSelected) && (tab_bar->SelectedTabId != id)) // _SetSelected can only be passed on explicit tab bar
tab_bar->NextSelectedTabId = id;
TabBarQueueFocus(tab_bar, tab);
}
// Lock visibility
@ -8198,7 +8232,7 @@ bool ImGui::TabItemEx(ImGuiTabBar* tab_bar, const char* label, bool* p_open,
bool hovered, held;
bool pressed = ButtonBehavior(bb, id, &hovered, &held, button_flags);
if (pressed && !is_tab_button)
tab_bar->NextSelectedTabId = id;
TabBarQueueFocus(tab_bar, tab);
// Allow the close button to overlap unless we are dragging (in which case we don't want any overlapping tabs to be hovered)
if (g.ActiveId != id)
@ -8239,9 +8273,8 @@ bool ImGui::TabItemEx(ImGuiTabBar* tab_bar, const char* label, bool* p_open,
// Select with right mouse button. This is so the common idiom for context menu automatically highlight the current widget.
const bool hovered_unblocked = IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup);
if (hovered_unblocked && (IsMouseClicked(1) || IsMouseReleased(1)))
if (!is_tab_button)
tab_bar->NextSelectedTabId = id;
if (hovered_unblocked && (IsMouseClicked(1) || IsMouseReleased(1)) && !is_tab_button)
TabBarQueueFocus(tab_bar, tab);
if (tab_bar->Flags & ImGuiTabBarFlags_NoCloseWithMiddleMouseButton)
flags |= ImGuiTabItemFlags_NoCloseWithMiddleMouseButton;