Updated ImGui.

3rdparty/ocornut-imgui/imgui.cpp

@@ -1805,6 +1805,7 @@ ImGuiWindow::ImGuiWindow(const char* name)
     Collapsed = false;
     SkipItems = false;
     Appearing = false;
+    CloseButton = false;
     BeginCount = 0;
     PopupId = 0;
     AutoFitFramesX = AutoFitFramesY = -1;
@@ -3922,6 +3923,13 @@ static ImVec2 FindBestPopupWindowPos(const ImVec2& base_pos, const ImVec2& size,
     return pos;
 }
 
+static void SetWindowConditionAllowFlags(ImGuiWindow* window, ImGuiCond flags, bool enabled)
+{
+    window->SetWindowPosAllowFlags       = enabled ? (window->SetWindowPosAllowFlags       | flags) : (window->SetWindowPosAllowFlags       & ~flags);
+    window->SetWindowSizeAllowFlags      = enabled ? (window->SetWindowSizeAllowFlags      | flags) : (window->SetWindowSizeAllowFlags      & ~flags);
+    window->SetWindowCollapsedAllowFlags = enabled ? (window->SetWindowCollapsedAllowFlags | flags) : (window->SetWindowCollapsedAllowFlags & ~flags);
+}
+
 ImGuiWindow* ImGui::FindWindowByName(const char* name)
 {
     ImGuiContext& g = *GImGui;
@@ -3953,15 +3961,9 @@ static ImGuiWindow* CreateNewWindow(const char* name, ImVec2 size, ImGuiWindowFl
 
         ImGuiIniData* settings = FindWindowSettings(name);
         if (!settings)
-        {
             settings = AddWindowSettings(name);
-        }
         else
-        {
-            window->SetWindowPosAllowFlags &= ~ImGuiCond_FirstUseEver;
-            window->SetWindowSizeAllowFlags &= ~ImGuiCond_FirstUseEver;
-            window->SetWindowCollapsedAllowFlags &= ~ImGuiCond_FirstUseEver;
-        }
+            SetWindowConditionAllowFlags(window, ImGuiCond_FirstUseEver, false);
 
         if (settings->Pos.x != FLT_MAX)
         {
@@ -4135,13 +4137,14 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
 
     const bool window_just_appearing_after_hidden_for_resize = (window->HiddenFrames == 1);
     window->Appearing = (window_just_activated_by_user || window_just_appearing_after_hidden_for_resize);
+    window->CloseButton = (p_open != NULL);
 
     // Process SetNextWindow***() calls
+    if (window->Appearing)
+        SetWindowConditionAllowFlags(window, ImGuiCond_Appearing, true);
     bool window_pos_set_by_api = false, window_size_set_by_api = false;
     if (g.SetNextWindowPosCond)
     {
-        if (window->Appearing) 
-            window->SetWindowPosAllowFlags |= ImGuiCond_Appearing;
         window_pos_set_by_api = (window->SetWindowPosAllowFlags & g.SetNextWindowPosCond) != 0;
         if (window_pos_set_by_api && ImLengthSqr(g.SetNextWindowPosPivot) > 0.00001f)
         {
@@ -4159,8 +4162,6 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
     }
     if (g.SetNextWindowSizeCond)
     {
-        if (window->Appearing) 
-            window->SetWindowSizeAllowFlags |= ImGuiCond_Appearing;
         window_size_set_by_api = (window->SetWindowSizeAllowFlags & g.SetNextWindowSizeCond) != 0;
         SetWindowSize(window, g.SetNextWindowSizeVal, g.SetNextWindowSizeCond);
         g.SetNextWindowSizeCond = 0;
@@ -4176,8 +4177,6 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
     }
     if (g.SetNextWindowCollapsedCond)
     {
-        if (window->Appearing)
-            window->SetWindowCollapsedAllowFlags |= ImGuiCond_Appearing;
         SetWindowCollapsed(window, g.SetNextWindowCollapsedVal, g.SetNextWindowCollapsedCond);
         g.SetNextWindowCollapsedCond = 0;
     }
@@ -4186,6 +4185,8 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
         SetWindowFocus();
         g.SetNextWindowFocus = false;
     }
+    if (window->Appearing)
+        SetWindowConditionAllowFlags(window, ImGuiCond_Appearing, false);
 
     // When reusing window again multiple times a frame, just append content (don't need to setup again)
     if (first_begin_of_the_frame)
@@ -4798,7 +4799,35 @@ void ImGui::Scrollbar(ImGuiLayoutType direction)
     window->DrawList->AddRectFilled(grab_rect.Min, grab_rect.Max, grab_col, style.ScrollbarRounding);
 }
 
-// Moving window to front of display (which happens to be back of our sorted list)
+void ImGui::BringWindowToFront(ImGuiWindow* window)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.Windows.back() == window)
+        return;
+    for (int i = 0; i < g.Windows.Size; i++)
+        if (g.Windows[i] == window)
+        {
+            g.Windows.erase(g.Windows.begin() + i);
+            g.Windows.push_back(window);
+            break;
+        }
+}
+
+void ImGui::BringWindowToBack(ImGuiWindow* window)
+{
+    ImGuiContext& g = *GImGui;
+    if (g.Windows[0] == window)
+        return;
+    for (int i = 0; i < g.Windows.Size; i++)
+        if (g.Windows[i] == window)
+        {
+            memmove(&g.Windows[1], &g.Windows[0], (size_t)i * sizeof(ImGuiWindow*));
+            g.Windows[0] = window;
+            break;
+        }
+}
+
+// Moving window to front of display and set focus (which happens to be back of our sorted list)
 void ImGui::FocusWindow(ImGuiWindow* window)
 {
     ImGuiContext& g = *GImGui;
@@ -4810,7 +4839,7 @@ void ImGui::FocusWindow(ImGuiWindow* window)
     if (!window)
         return;
 
-    // And move its root window to the top of the pile
+    // Move the root window to the top of the pile
     if (window->RootWindow)
         window = window->RootWindow;
 
@@ -4820,15 +4849,8 @@ void ImGui::FocusWindow(ImGuiWindow* window)
             ClearActiveID();
 
     // Bring to front
-    if ((window->Flags & ImGuiWindowFlags_NoBringToFrontOnFocus) || g.Windows.back() == window)
-        return;
-    for (int i = 0; i < g.Windows.Size; i++)
-        if (g.Windows[i] == window)
-        {
-            g.Windows.erase(g.Windows.begin() + i);
-            break;
-        }
-    g.Windows.push_back(window);
+    if (!(window->Flags & ImGuiWindowFlags_NoBringToFrontOnFocus))
+        BringWindowToFront(window);
 }
 
 void ImGui::FocusPreviousWindow()
@@ -10499,7 +10521,8 @@ void ImGui::EndColumns()
 
     window->DC.ColumnsCellMaxY = ImMax(window->DC.ColumnsCellMaxY, window->DC.CursorPos.y);
     window->DC.CursorPos.y = window->DC.ColumnsCellMaxY;
-    window->DC.CursorMaxPos.x = ImMax(window->DC.ColumnsStartMaxPosX, window->DC.ColumnsMaxX);  // Columns don't grow parent
+    if (!(window->DC.ColumnsFlags & ImGuiColumnsFlags_GrowParentContentsSize))
+        window->DC.CursorMaxPos.x = ImMax(window->DC.ColumnsStartMaxPosX, window->DC.ColumnsMaxX);  // Restore cursor max pos, as columns don't grow parent
 
     // Draw columns borders and handle resize
     if (!(window->DC.ColumnsFlags & ImGuiColumnsFlags_NoBorder) && !window->SkipItems)

3rdparty/ocornut-imgui/imgui_internal.h

@@ -194,7 +194,8 @@ enum ImGuiColumnsFlags_
     ImGuiColumnsFlags_NoBorder              = 1 << 0,   // Disable column dividers
     ImGuiColumnsFlags_NoResize              = 1 << 1,   // Disable resizing columns when clicking on the dividers
     ImGuiColumnsFlags_NoPreserveWidths      = 1 << 2,   // Disable column width preservation when adjusting columns
-    ImGuiColumnsFlags_NoForceWithinWindow   = 1 << 3    // Disable forcing columns to fit within window
+    ImGuiColumnsFlags_NoForceWithinWindow   = 1 << 3,   // Disable forcing columns to fit within window
+    ImGuiColumnsFlags_GrowParentContentsSize= 1 << 4,   // (WIP) Restore pre-1.51 behavior of extending the parent window contents size but _without affecting the columns width at all_. Will eventually remove.
 };
 
 enum ImGuiSelectableFlagsPrivate_
@@ -700,6 +701,7 @@ struct IMGUI_API ImGuiWindow
     bool                    Collapsed;                          // Set when collapsing window to become only title-bar
     bool                    SkipItems;                          // Set when items can safely be all clipped (e.g. window not visible or collapsed)
     bool                    Appearing;                          // Set during the frame where the window is appearing (or re-appearing)
+    bool                    CloseButton;                        // Set when the window has a close button (p_open != NULL)
     int                     BeginCount;                         // Number of Begin() during the current frame (generally 0 or 1, 1+ if appending via multiple Begin/End pairs)
     ImGuiID                 PopupId;                            // ID in the popup stack when this window is used as a popup/menu (because we use generic Name/ID for recycling)
     int                     AutoFitFramesX, AutoFitFramesY;
@@ -779,6 +781,8 @@ namespace ImGui
     IMGUI_API ImGuiWindow*  GetParentWindow();
     IMGUI_API ImGuiWindow*  FindWindowByName(const char* name);
     IMGUI_API void          FocusWindow(ImGuiWindow* window);
+    IMGUI_API void          BringWindowToFront(ImGuiWindow* window);
+    IMGUI_API void          BringWindowToBack(ImGuiWindow* window);
 
     IMGUI_API void          Initialize();
     IMGUI_API void          EndFrame();                 // Ends the ImGui frame. Automatically called by Render()! you most likely don't need to ever call that yourself directly. If you don't need to render you can call EndFrame() but you'll have wasted CPU already. If you don't need to render, don't create any windows instead!