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| author | Tor Arne Vestbø <tor.arne.vestbo@qt.io> | 2019-03-21 15:26:45 +0100 |
|---|---|---|
| committer | Tor Arne Vestbø <tor.arne.vestbo@qt.io> | 2019-04-19 15:34:39 +0000 |
| commit | 2b2133f85362325dbb7c0a8e73b8a4697128b5c4 (patch) | |
| tree | 3a75e9976fdc610204943f985b306edbf2cc94da /src/plugins/platforms/cocoa/qcocoabackingstore.h | |
| parent | 585150e3d947d0ee30489f275e7fc39bce4fe059 (diff) | |
macOS: Gracefully handle devicePixelRatio mismatch in QCALayerBackingStore
If the client of the backingstore fails to pick up dpr changes, and
tries to flush the backingstore without a repaint, we will end up
flushing a back-buffer with a stale dpr. Detect when this happens,
warn the user, and smooth out the situation by adjusting the layer
accordingly.
Change-Id: If4596a8976a3902252c81d8e28c7aeb9fdd908bf
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
Diffstat (limited to 'src/plugins/platforms/cocoa/qcocoabackingstore.h')
| -rw-r--r-- | src/plugins/platforms/cocoa/qcocoabackingstore.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/plugins/platforms/cocoa/qcocoabackingstore.h b/src/plugins/platforms/cocoa/qcocoabackingstore.h index 508f24d578..6f24598250 100644 --- a/src/plugins/platforms/cocoa/qcocoabackingstore.h +++ b/src/plugins/platforms/cocoa/qcocoabackingstore.h @@ -93,6 +93,7 @@ private: QRegion dirtyRegion; // In unscaled coordinates QImage *asImage(); + qreal devicePixelRatio() const { return m_devicePixelRatio; } private: qreal m_devicePixelRatio; |