mirror/imgui
1
0
Fork 0
mirror of https://github.com/ocornut/imgui.git synced 2026-02-06 04:20:08 +00:00
Code Activity

Merge branch 'master' into docking

Browse source 
# Conflicts:
#	backends/imgui_impl_glfw.cpp
#	backends/imgui_impl_osx.mm
#	backends/imgui_impl_sdl.cpp
#	backends/imgui_impl_win32.cpp
#	imgui.cpp
#	imgui.h
#	imgui_internal.h
#	imgui_widgets.cpp
This commit is contained in:
ocornut 2023-02-01 22:18:57 +01:00
commit 887abe9578
30 changed files with 676 additions and 180 deletions
Download patch file Download diff file Expand all files Collapse all files

121
imgui_widgets.cpp
View file

@ -274,7 +274,6 @@ void ImGui::TextV(const char* fmt, va_list args)
if (window->SkipItems)
return;
// FIXME-OPT: Handle the %s shortcut?
const char* text, *text_end;
ImFormatStringToTempBufferV(&text, &text_end, fmt, args);
TextEx(text, text_end, ImGuiTextFlags_NoWidthForLargeClippedText);
@ -291,10 +290,7 @@ void ImGui::TextColored(const ImVec4& col, const char* fmt, ...)
void ImGui::TextColoredV(const ImVec4& col, const char* fmt, va_list args)
{
PushStyleColor(ImGuiCol_Text, col);
if (fmt[0] == '%' && fmt[1] == 's' && fmt[2] == 0)
TextEx(va_arg(args, const char*), NULL, ImGuiTextFlags_NoWidthForLargeClippedText); // Skip formatting
else
TextV(fmt, args);
TextV(fmt, args);
PopStyleColor();
}
@ -310,10 +306,7 @@ void ImGui::TextDisabledV(const char* fmt, va_list args)
{
ImGuiContext& g = *GImGui;
PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
if (fmt[0] == '%' && fmt[1] == 's' && fmt[2] == 0)
TextEx(va_arg(args, const char*), NULL, ImGuiTextFlags_NoWidthForLargeClippedText); // Skip formatting
else
TextV(fmt, args);
TextV(fmt, args);
PopStyleColor();
}
@ -328,13 +321,10 @@ void ImGui::TextWrapped(const char* fmt, ...)
void ImGui::TextWrappedV(const char* fmt, va_list args)
{
ImGuiContext& g = *GImGui;
bool need_backup = (g.CurrentWindow->DC.TextWrapPos < 0.0f); // Keep existing wrap position if one is already set
const bool need_backup = (g.CurrentWindow->DC.TextWrapPos < 0.0f); // Keep existing wrap position if one is already set
if (need_backup)
PushTextWrapPos(0.0f);
if (fmt[0] == '%' && fmt[1] == 's' && fmt[2] == 0)
TextEx(va_arg(args, const char*), NULL, ImGuiTextFlags_NoWidthForLargeClippedText); // Skip formatting
else
TextV(fmt, args);
TextV(fmt, args);
if (need_backup)
PopTextWrapPos();
}
@ -1048,7 +1038,7 @@ void ImGui::Image(ImTextureID user_texture_id, const ImVec2& size, const ImVec2&
// ImageButton() is flawed as 'id' is always derived from 'texture_id' (see #2464 #1390)
// We provide this internal helper to write your own variant while we figure out how to redesign the public ImageButton() API.
bool ImGui::ImageButtonEx(ImGuiID id, ImTextureID texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, const ImVec4& bg_col, const ImVec4& tint_col)
bool ImGui::ImageButtonEx(ImGuiID id, ImTextureID texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, const ImVec4& bg_col, const ImVec4& tint_col, ImGuiButtonFlags flags)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = GetCurrentWindow();
@ -1062,7 +1052,7 @@ bool ImGui::ImageButtonEx(ImGuiID id, ImTextureID texture_id, const ImVec2& size
return false;
bool hovered, held;
bool pressed = ButtonBehavior(bb, id, &hovered, &held);
bool pressed = ButtonBehavior(bb, id, &hovered, &held, flags);
// Render
const ImU32 col = GetColorU32((held && hovered) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button);
@ -1711,7 +1701,12 @@ bool ImGui::BeginComboPopup(ImGuiID popup_id, const ImRect& bb, ImGuiComboFlags
if (flags & ImGuiComboFlags_HeightRegular) popup_max_height_in_items = 8;
else if (flags & ImGuiComboFlags_HeightSmall) popup_max_height_in_items = 4;
else if (flags & ImGuiComboFlags_HeightLarge) popup_max_height_in_items = 20;
SetNextWindowSizeConstraints(ImVec2(w, 0.0f), ImVec2(FLT_MAX, CalcMaxPopupHeightFromItemCount(popup_max_height_in_items)));
ImVec2 constraint_min(0.0f, 0.0f), constraint_max(FLT_MAX, FLT_MAX);
if ((g.NextWindowData.Flags & ImGuiNextWindowDataFlags_HasSize) == 0 || g.NextWindowData.SizeVal.x <= 0.0f) // Don't apply constraints if user specified a size
constraint_min.x = w;
if ((g.NextWindowData.Flags & ImGuiNextWindowDataFlags_HasSize) == 0 || g.NextWindowData.SizeVal.y <= 0.0f)
constraint_max.y = CalcMaxPopupHeightFromItemCount(popup_max_height_in_items);
SetNextWindowSizeConstraints(constraint_min, constraint_max);
}
// This is essentially a specialized version of BeginPopupEx()
@ -4102,6 +4097,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
state->Stb.insert_mode = 1; // stb field name is indeed incorrect (see #2863)
}
const bool is_osx = io.ConfigMacOSXBehaviors;
if (g.ActiveId != id && init_make_active)
{
IM_ASSERT(state && state->ID == id);
@ -4124,6 +4120,8 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
SetKeyOwner(ImGuiKey_PageUp, id);
SetKeyOwner(ImGuiKey_PageDown, id);
}
if (is_osx)
SetKeyOwner(ImGuiMod_Alt, id);
if (flags & (ImGuiInputTextFlags_CallbackCompletion | ImGuiInputTextFlags_AllowTabInput)) // Disable keyboard tabbing out as we will use the \t character.
SetKeyOwner(ImGuiKey_Tab, id);
}
@ -4193,7 +4191,6 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
const float mouse_x = (io.MousePos.x - frame_bb.Min.x - style.FramePadding.x) + state->ScrollX;
const float mouse_y = (is_multiline ? (io.MousePos.y - draw_window->DC.CursorPos.y) : (g.FontSize * 0.5f));
const bool is_osx = io.ConfigMacOSXBehaviors;
if (select_all)
{
state->SelectAll();
@ -4294,7 +4291,6 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
state->Stb.row_count_per_page = row_count_per_page;
const int k_mask = (io.KeyShift ? STB_TEXTEDIT_K_SHIFT : 0);
const bool is_osx = io.ConfigMacOSXBehaviors;
const bool is_wordmove_key_down = is_osx ? io.KeyAlt : io.KeyCtrl; // OS X style: Text editing cursor movement using Alt instead of Ctrl
const bool is_startend_key_down = is_osx && io.KeySuper && !io.KeyCtrl && !io.KeyAlt; // OS X style: Line/Text Start and End using Cmd+Arrows instead of Home/End
@ -4323,7 +4319,16 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
else if (IsKeyPressed(ImGuiKey_PageDown) && is_multiline) { state->OnKeyPressed(STB_TEXTEDIT_K_PGDOWN | k_mask); scroll_y += row_count_per_page * g.FontSize; }
else if (IsKeyPressed(ImGuiKey_Home)) { state->OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTSTART | k_mask : STB_TEXTEDIT_K_LINESTART | k_mask); }
else if (IsKeyPressed(ImGuiKey_End)) { state->OnKeyPressed(io.KeyCtrl ? STB_TEXTEDIT_K_TEXTEND | k_mask : STB_TEXTEDIT_K_LINEEND | k_mask); }
else if (IsKeyPressed(ImGuiKey_Delete) && !is_readonly && !is_cut) { state->OnKeyPressed(STB_TEXTEDIT_K_DELETE | k_mask); }
else if (IsKeyPressed(ImGuiKey_Delete) && !is_readonly && !is_cut)
{
if (!state->HasSelection())
{
// OSX doesn't seem to have Super+Delete to delete until end-of-line, so we don't emulate that (as opposed to Super+Backspace)
if (is_wordmove_key_down)
state->OnKeyPressed(STB_TEXTEDIT_K_WORDRIGHT | STB_TEXTEDIT_K_SHIFT);
}
state->OnKeyPressed(STB_TEXTEDIT_K_DELETE | k_mask);
}
else if (IsKeyPressed(ImGuiKey_Backspace) && !is_readonly)
{
if (!state->HasSelection())
@ -7033,7 +7038,7 @@ bool ImGui::BeginMenuEx(const char* label, const char* icon, bool enabled)
PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(style.ItemSpacing.x * 2.0f, style.ItemSpacing.y));
float w = label_size.x;
ImVec2 text_pos(window->DC.CursorPos.x + offsets->OffsetLabel, window->DC.CursorPos.y + window->DC.CurrLineTextBaseOffset);
pressed = Selectable("", menu_is_open, selectable_flags, ImVec2(w, 0.0f));
pressed = Selectable("", menu_is_open, selectable_flags, ImVec2(w, label_size.y));
RenderText(text_pos, label);
PopStyleVar();
window->DC.CursorPos.x += IM_FLOOR(style.ItemSpacing.x * (-1.0f + 0.5f)); // -1 spacing to compensate the spacing added when Selectable() did a SameLine(). It would also work to call SameLine() ourselves after the PopStyleVar().
@ -7049,7 +7054,7 @@ bool ImGui::BeginMenuEx(const char* label, const char* icon, bool enabled)
float min_w = window->DC.MenuColumns.DeclColumns(icon_w, label_size.x, 0.0f, checkmark_w); // Feedback to next frame
float extra_w = ImMax(0.0f, GetContentRegionAvail().x - min_w);
ImVec2 text_pos(window->DC.CursorPos.x + offsets->OffsetLabel, window->DC.CursorPos.y + window->DC.CurrLineTextBaseOffset);
pressed = Selectable("", menu_is_open, selectable_flags | ImGuiSelectableFlags_SpanAvailWidth, ImVec2(min_w, 0.0f));
pressed = Selectable("", menu_is_open, selectable_flags | ImGuiSelectableFlags_SpanAvailWidth, ImVec2(min_w, label_size.y));
RenderText(text_pos, label);
if (icon_w > 0.0f)
RenderText(pos + ImVec2(offsets->OffsetIcon, 0.0f), icon);
@ -7241,7 +7246,7 @@ bool ImGui::MenuItemEx(const char* label, const char* icon, const char* shortcut
float checkmark_w = IM_FLOOR(g.FontSize * 1.20f);
float min_w = window->DC.MenuColumns.DeclColumns(icon_w, label_size.x, shortcut_w, checkmark_w); // Feedback for next frame
float stretch_w = ImMax(0.0f, GetContentRegionAvail().x - min_w);
pressed = Selectable("", false, selectable_flags | ImGuiSelectableFlags_SpanAvailWidth, ImVec2(min_w, 0.0f));
pressed = Selectable("", false, selectable_flags | ImGuiSelectableFlags_SpanAvailWidth, ImVec2(min_w, label_size.y));
if (g.LastItemData.StatusFlags & ImGuiItemStatusFlags_Visible)
{
RenderText(pos + ImVec2(offsets->OffsetLabel, 0.0f), label);
@ -7293,12 +7298,19 @@ bool ImGui::MenuItem(const char* label, const char* shortcut, bool* p_selected,
// - TabBarCalcTabID() [Internal]
// - TabBarCalcMaxTabWidth() [Internal]
// - TabBarFindTabById() [Internal]
// - TabBarFindTabByOrder() [Internal]
// - TabBarFindMostRecentlySelectedTabForActiveWindow() [Internal]
// - TabBarGetCurrentTab() [Internal]
// - TabBarGetTabName() [Internal]
// - TabBarAddTab() [Internal]
// - TabBarRemoveTab() [Internal]
// - TabBarCloseTab() [Internal]
// - TabBarScrollClamp() [Internal]
// - TabBarScrollToTab() [Internal]
// - TabBarQueueChangeTabOrder() [Internal]
// - TabBarQueueFocus() [Internal]
// - TabBarQueueReorder() [Internal]
// - TabBarProcessReorderFromMousePos() [Internal]
// - TabBarProcessReorder() [Internal]
// - TabBarScrollingButtons() [Internal]
// - TabBarTabListPopupButton() [Internal]
//-------------------------------------------------------------------------
@ -7424,6 +7436,7 @@ 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
@ -7479,6 +7492,7 @@ 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();
@ -7588,7 +7602,7 @@ 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;
@ -7753,6 +7767,14 @@ ImGuiTabItem* ImGui::TabBarFindTabByID(ImGuiTabBar* tab_bar, ImGuiID tab_id)
return NULL;
}
// 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];
}
// FIXME: See references to #2304 in TODO.txt
ImGuiTabItem* ImGui::TabBarFindMostRecentlySelectedTabForActiveWindow(ImGuiTabBar* tab_bar)
{
@ -7767,6 +7789,21 @@ ImGuiTabItem* ImGui::TabBarFindMostRecentlySelectedTabForActiveWindow(ImGuiTabBa
return most_recently_selected_tab;
}
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)
{
if (tab->Window)
return tab->Window->Name;
IM_ASSERT(tab->NameOffset != -1 && tab->NameOffset < tab_bar->TabsNames.Buf.Size);
return tab_bar->TabsNames.Buf.Data + tab->NameOffset;
}
// The purpose of this call is to register tab in advance so we can control their order at the time they appear.
// Otherwise calling this is unnecessary as tabs are appending as needed by the BeginTabItem() function.
void ImGui::TabBarAddTab(ImGuiTabBar* tab_bar, ImGuiTabItemFlags tab_flags, ImGuiWindow* window)
@ -7788,7 +7825,7 @@ void ImGui::TabBarAddTab(ImGuiTabBar* tab_bar, ImGuiTabItemFlags tab_flags, ImGu
tab_bar->Tabs.push_back(new_tab);
}
// The *TabId fields be already set by the docking system _before_ the actual TabItem was created, so we clear them regardless.
// 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))
@ -7819,7 +7856,7 @@ 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);
}
}
@ -7840,7 +7877,7 @@ 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.
@ -7864,7 +7901,12 @@ 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);
@ -7872,7 +7914,7 @@ 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);
@ -7915,7 +7957,7 @@ 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;
@ -7975,7 +8017,7 @@ 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
@ -8027,7 +8069,7 @@ 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;
}
@ -8194,9 +8236,9 @@ 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
@ -8260,7 +8302,7 @@ 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);
// Transfer active id window so the active id is not owned by the dock host (as StartMouseMovingWindow()
// will only do it on the drag). This allows FocusWindow() to be more conservative in how it clears active id.
@ -8317,7 +8359,7 @@ bool ImGui::TabItemEx(ImGuiTabBar* tab_bar, const char* label, bool* p_open,
if (distance_from_edge_y >= threshold_y)
undocking_tab = true;
if (drag_distance_from_edge_x > threshold_x)
if ((drag_dir < 0 && tab_bar->GetTabOrder(tab) == 0) || (drag_dir > 0 && tab_bar->GetTabOrder(tab) == tab_bar->Tabs.Size - 1))
if ((drag_dir < 0 && TabBarGetTabOrder(tab_bar, tab) == 0) || (drag_dir > 0 && TabBarGetTabOrder(tab_bar, tab) == tab_bar->Tabs.Size - 1))
undocking_tab = true;
}
@ -8353,9 +8395,8 @@ 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;