[Bundle]: added ImGuiContextHookType_Begin/EndWindow

cf thedmd/imgui-node-editor#242 (comment)

This helps fixing issues in popup positionning inside the node editor

Author: pthom

imgui.cpp

@@ -7513,6 +7513,12 @@ static void SetWindowActiveForSkipRefresh(ImGuiWindow* window)
 bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
 {
     ImGuiContext& g = *GImGui;
+
+    {
+        // [ADAPT_IMGUI_BUNDLE]: added ImGuiContextHookType_BeginWindow, ImGuiContextHookType_EndWindow, cf https://github.com/thedmd/imgui-node-editor/issues/242#issuecomment-1681806764
+        CallContextHooks(&g, ImGuiContextHookType_BeginWindow);
+    }
+
     const ImGuiStyle& style = g.Style;
     IM_ASSERT(name != NULL && name[0] != '\0');     // Window name required
     IM_ASSERT(g.WithinFrameScope);                  // Forgot to call ImGui::NewFrame()
@@ -8523,6 +8529,11 @@ void ImGui::End()
     SetCurrentWindow(g.CurrentWindowStack.Size == 0 ? NULL : g.CurrentWindowStack.back().Window);
     if (g.CurrentWindow)
         SetCurrentViewport(g.CurrentWindow, g.CurrentWindow->Viewport);
+
+    {
+        // [ADAPT_IMGUI_BUNDLE]: added ImGuiContextHookType_BeginWindow, ImGuiContextHookType_EndWindow, cf https://github.com/thedmd/imgui-node-editor/issues/242#issuecomment-1681806764
+        CallContextHooks(&g, ImGuiContextHookType_EndWindow);
+    }
 }
 
 // Use ImDrawList::_SetTextureRef(), making our shared g.FontStack[] authorative against window-local ImDrawList.

imgui_internal.h

@@ -2331,7 +2331,9 @@ struct ImGuiIDStackTool
 //-----------------------------------------------------------------------------
 
 typedef void (*ImGuiContextHookCallback)(ImGuiContext* ctx, ImGuiContextHook* hook);
-enum ImGuiContextHookType { ImGuiContextHookType_NewFramePre, ImGuiContextHookType_NewFramePost, ImGuiContextHookType_EndFramePre, ImGuiContextHookType_EndFramePost, ImGuiContextHookType_RenderPre, ImGuiContextHookType_RenderPost, ImGuiContextHookType_Shutdown, ImGuiContextHookType_PendingRemoval_ };
+
+// [ADAPT_IMGUI_BUNDLE]: added ImGuiContextHookType_BeginWindow, ImGuiContextHookType_EndWindow, cf https://github.com/thedmd/imgui-node-editor/issues/242#issuecomment-1681806764
+enum ImGuiContextHookType { ImGuiContextHookType_NewFramePre, ImGuiContextHookType_NewFramePost, ImGuiContextHookType_EndFramePre, ImGuiContextHookType_EndFramePost, ImGuiContextHookType_RenderPre, ImGuiContextHookType_RenderPost, ImGuiContextHookType_Shutdown, ImGuiContextHookType_PendingRemoval_, ImGuiContextHookType_BeginWindow, ImGuiContextHookType_EndWindow };
 
 struct ImGuiContextHook
 {