TechDraw - Balloon updates - improve hospot calculation

src/Mod/TechDraw/Gui/QGVPage.cpp

@@ -1262,6 +1262,7 @@ double QGVPage::getDevicePixelRatio() const {
 
 QPixmap QGVPage::prepareCursorPixmap(const char *iconName, QPoint &hotspot) {
 
+    QPointF floatHotspot(hotspot);
     double pixelRatio = getDevicePixelRatio();
 
     // Due to impossibility to query cursor size via Qt API, we stick to (32x32)*device_pixel_ratio
@@ -1273,17 +1274,18 @@ QPixmap QGVPage::prepareCursorPixmap(const char *iconName, QPoint &hotspot) {
 
     // The default (and here expected) SVG cursor graphics size is 64x64 pixels, thus we must adjust
     // the 64x64 based hotspot position for our 32x32 based cursor pixmaps accordingly
-    hotspot /= 2;
+    floatHotspot *= 0.5;
 
 #if !defined(Q_OS_WIN32) && !defined(Q_OS_MAC)
     // On XCB platform, the pixmap device pixel ratio is not taken into account for cursor hot spot,
     // therefore we must take care of the transformation ourselves...
     // Refer to QTBUG-68571 - https://bugreports.qt.io/browse/QTBUG-68571
     if (qGuiApp->platformName() == QLatin1String("xcb")) {
-        hotspot *= pixelRatio;
+        floatHotspot *= pixelRatio;
     }
 #endif
 
+    hotspot = floatHotspot.toPoint();
     return pixmap;
 }