Popups: popups can be closed with a right-click anywhere, without alt…

…ering focus under the popup.(~#439)

imgui.cpp

@@ -643,7 +643,7 @@ static void             MarkIniSettingsDirty(ImGuiWindow* window);
 
 static ImRect           GetVisibleRect();
 
-static void             CloseInactivePopups();
+static void             CloseInactivePopups(ImGuiWindow* ref_window);
 static void             ClosePopupToLevel(int remaining);
 static ImGuiWindow*     GetFrontMostModalRootWindow();
 static ImVec2           FindBestPopupWindowPos(const ImVec2& base_pos, const ImVec2& size, int* last_dir, const ImRect& rect_to_avoid);
@@ -2441,7 +2441,7 @@ void ImGui::NewFrame()
     // But in order to allow the user to call NewFrame() multiple times without calling Render(), we are doing an explicit clear.
     g.CurrentWindowStack.resize(0);
     g.CurrentPopupStack.resize(0);
-    CloseInactivePopups();
+    CloseInactivePopups(g.NavWindow);
 
     // Create implicit window - we will only render it if the user has added something to it.
     // We don't use "Debug" to avoid colliding with user trying to create a "Debug" window with custom flags.
@@ -2773,7 +2773,7 @@ void ImGui::EndFrame()
 
     if (g.ActiveId == 0 && g.HoveredId == 0)
     {
-        if (!g.NavWindow || g.NavWindow->WasActive || !g.NavWindow->Active) // Unless we just made a popup appear
+        if (!g.NavWindow || !g.NavWindow->Appearing) // Unless we just made a window/popup appear
         {
             // Click to focus window and start moving (after we're done with all our widgets)
             if (g.IO.MouseClicked[0])
@@ -2794,6 +2794,13 @@ void ImGui::EndFrame()
                     FocusWindow(NULL);
                 }
             }
+
+            // With right mouse button we close popups without changing focus
+            // (The left mouse button path calls FocusWindow which will lead NewFrame->CloseInactivePopups to trigger)
+            if (g.IO.MouseClicked[1])
+            {
+                CloseInactivePopups(g.HoveredWindow);
+            }
         }
     }
 
@@ -3567,7 +3574,7 @@ void ImGui::OpenPopup(const char* str_id)
     OpenPopupEx(g.CurrentWindow->GetID(str_id), false);
 }
 
-static void CloseInactivePopups()
+static void CloseInactivePopups(ImGuiWindow* ref_window)
 {
     ImGuiContext& g = *GImGui;
     if (g.OpenPopupStack.empty())
@@ -3576,7 +3583,7 @@ static void CloseInactivePopups()
     // When popups are stacked, clicking on a lower level popups puts focus back to it and close popups above it.
     // Don't close our own child popup windows
     int n = 0;
-    if (g.NavWindow)
+    if (ref_window)
     {
         for (n = 0; n < g.OpenPopupStack.Size; n++)
         {
@@ -3589,7 +3596,7 @@ static void CloseInactivePopups()
 
             bool has_focus = false;
             for (int m = n; m < g.OpenPopupStack.Size && !has_focus; m++)
-                has_focus = (g.OpenPopupStack[m].Window && g.OpenPopupStack[m].Window->RootWindow == g.NavWindow->RootWindow);
+                has_focus = (g.OpenPopupStack[m].Window && g.OpenPopupStack[m].Window->RootWindow == ref_window->RootWindow);
             if (!has_focus)
                 break;
         }