Windows QPA: Scale hotspot of custom cursors correctly.

Separate factors in QWindowsCursor::createPixmapCursor()
and apply factor to the hotspot.

Task-number: QTBUG-52276
Change-Id: Ia5a5db39ddc2bc4215a23ff8625431af9b4a76d8
Reviewed-by: Adam Light <aclight@gmail.com>
Reviewed-by: Oliver Wolff <oliver.wolff@theqtcompany.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/src/plugins/platforms/windows/qwindowscursor.cpp b/src/plugins/platforms/windows/qwindowscursor.cpp
index cda741c226..844fe23517 100644
--- a/src/plugins/platforms/windows/qwindowscursor.cpp
+++ b/src/plugins/platforms/windows/qwindowscursor.cpp
@@ -97,9 +97,9 @@ QWindowsPixmapCursorCacheKey::QWindowsPixmapCursorCacheKey(const QCursor &c)
 HCURSOR QWindowsCursor::createPixmapCursor(QPixmap pixmap, const QPoint &hotSpot, qreal scaleFactor)
 {
     HCURSOR cur = 0;
-    scaleFactor /= pixmap.devicePixelRatioF();
-    if (!qFuzzyCompare(scaleFactor, 1)) {
-        pixmap = pixmap.scaled((scaleFactor * QSizeF(pixmap.size())).toSize(),
+    const qreal pixmapScaleFactor = scaleFactor / pixmap.devicePixelRatioF();
+    if (!qFuzzyCompare(pixmapScaleFactor, 1)) {
+        pixmap = pixmap.scaled((pixmapScaleFactor * QSizeF(pixmap.size())).toSize(),
                                Qt::KeepAspectRatio, Qt::SmoothTransformation);
     }
     QBitmap mask = pixmap.mask();
@@ -113,8 +113,8 @@ HCURSOR QWindowsCursor::createPixmapCursor(QPixmap pixmap, const QPoint &hotSpot
 
     ICONINFO ii;
     ii.fIcon     = 0;
-    ii.xHotspot  = DWORD(hotSpot.x());
-    ii.yHotspot  = DWORD(hotSpot.y());
+    ii.xHotspot  = DWORD(qRound(hotSpot.x() * scaleFactor));
+    ii.yHotspot  = DWORD(qRound(hotSpot.y() * scaleFactor));
     ii.hbmMask   = im;
     ii.hbmColor  = ic;