Docking: move DockTabItemStatusFlags stuff next to its peers in DC structure.

Author: ocornut

imgui.cpp

@@ -4816,7 +4816,7 @@ static void ImGui::SetLastItemDataForWindow(ImGuiWindow* window, const ImRect& r
 {
     ImGuiContext& g = *GImGui;
     if (window->DockIsActive)
-        SetLastItemData(window->MoveId, g.CurrentItemFlags, window->DockTabItemStatusFlags, window->DockTabItemRect);
+        SetLastItemData(window->MoveId, g.CurrentItemFlags, window->DC.DockTabItemStatusFlags, window->DC.DockTabItemRect);
     else
         SetLastItemData(window->MoveId, g.CurrentItemFlags, window->DC.WindowItemStatusFlags, rect);
 }
@@ -18537,8 +18537,8 @@ static void ImGui::DockNodeUpdateTabBar(ImGuiDockNode* node, ImGuiWindow* host_w
                 node->VisibleWindow = window;
 
             // Store last item data so it can be queried with IsItemXXX functions after the user Begin() call
-            window->DockTabItemStatusFlags = g.LastItemData.StatusFlags;
-            window->DockTabItemRect = g.LastItemData.Rect;
+            window->DC.DockTabItemStatusFlags = g.LastItemData.StatusFlags;
+            window->DC.DockTabItemRect = g.LastItemData.Rect;
 
             // Update navigation ID on menu layer
             if (g.NavWindow && g.NavWindow->RootWindow == window && (window->DC.NavLayersActiveMask & (1 << ImGuiNavLayer_Menu)) == 0)

imgui_internal.h

@@ -2668,8 +2668,12 @@ struct IMGUI_API ImGuiWindowTempData
     ImGuiLayoutType         LayoutType;
     ImGuiLayoutType         ParentLayoutType;       // Layout type of parent window at the time of Begin()
     ImU32                   ModalDimBgColor;
+
+    // Status flags
     ImGuiItemStatusFlags    WindowItemStatusFlags;
     ImGuiItemStatusFlags    ChildItemStatusFlags;
+    ImGuiItemStatusFlags    DockTabItemStatusFlags;
+    ImRect                  DockTabItemRect;
 
     // Local parameters stacks
     // We store the current settings outside of the vectors to increase memory locality (reduce cache misses). The vectors are rarely modified. Also it allows us to not heap allocate for short-lived windows which are not using those settings.
@@ -2809,8 +2813,6 @@ struct IMGUI_API ImGuiWindow
     ImGuiDockNode*          DockNode;                           // Which node are we docked into. Important: Prefer testing DockIsActive in many cases as this will still be set when the dock node is hidden.
     ImGuiDockNode*          DockNodeAsHost;                     // Which node are we owning (for parent windows)
     ImGuiID                 DockId;                             // Backup of last valid DockNode->ID, so single window remember their dock node id even when they are not bound any more
-    ImGuiItemStatusFlags    DockTabItemStatusFlags;
-    ImRect                  DockTabItemRect;
 
 public:
     ImGuiWindow(ImGuiContext* context, const char* name);