Linux: Fixed an issue in LinuxComponentPeer::getScreenPosition() with embedded windows

modules/juce_gui_basics/native/juce_linux_X11_Windowing.cpp

@@ -1261,10 +1261,13 @@ public:
 
     Point<int> getScreenPosition (bool physical) const
     {
+        auto screenBounds = (parentWindow == 0 ? bounds
+                                               : bounds.translated (parentScreenPosition.x, parentScreenPosition.y));
+
         if (physical)
-            return Desktop::getInstance().getDisplays().logicalToPhysical (bounds.getTopLeft());
+            return Desktop::getInstance().getDisplays().logicalToPhysical (screenBounds.getTopLeft());
 
-        return bounds.getTopLeft();
+        return screenBounds.getTopLeft();
     }
 
     Rectangle<int> getBounds() const override                            { return bounds; }
@@ -2399,6 +2402,7 @@ private:
     friend class LinuxRepaintManager;
     Window windowH = {}, parentWindow = {}, keyProxy = {};
     Rectangle<int> bounds;
+    Point<int> parentScreenPosition;
     Image taskbarImage;
     bool fullScreen = false, mapped = false, focused = false;
     Visual* visual = {};
@@ -2855,9 +2859,23 @@ private:
 
             ScopedXLock xlock (display);
 
-            if (XGetGeometry (display, (::Drawable) windowH, &root, &wx, &wy, &ww, &wh, &bw, &bitDepth) && parentWindow == 0)
-                if (! XTranslateCoordinates (display, windowH, root, 0, 0, &wx, &wy, &child))
-                    wx = wy = 0;
+            if (XGetGeometry (display, (::Drawable) windowH, &root, &wx, &wy, &ww, &wh, &bw, &bitDepth))
+            {
+                int rootX = 0, rootY = 0;
+
+                if (! XTranslateCoordinates (display, windowH, root, 0, 0, &rootX, &rootY, &child))
+                    rootX = rootY = 0;
+
+                if (parentWindow == 0)
+                {
+                    wx = rootX;
+                    wy = rootY;
+                }
+                else
+                {
+                    parentScreenPosition = Desktop::getInstance().getDisplays().physicalToLogical (Point<int> (rootX, rootY));
+                }
+            }
 
             Rectangle<int> physicalBounds (wx, wy, (int) ww, (int) wh);