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Diffstat (limited to 'src/gui/painting/qpaintdevice.cpp')
| -rw-r--r-- | src/gui/painting/qpaintdevice.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/gui/painting/qpaintdevice.cpp b/src/gui/painting/qpaintdevice.cpp index bbf8e8f170..2332d11a03 100644 --- a/src/gui/painting/qpaintdevice.cpp +++ b/src/gui/painting/qpaintdevice.cpp @@ -79,7 +79,13 @@ Q_GUI_EXPORT int qt_paint_device_metric(const QPaintDevice *device, QPaintDevice int QPaintDevice::metric(PaintDeviceMetric m) const { + // Fallback: A subclass has not implemented PdmDevicePixelRatioScaled but might + // have implemented PdmDevicePixelRatio. + if (m == PdmDevicePixelRatioScaled) + return this->metric(PdmDevicePixelRatio) * devicePixelRatioFScale(); + qWarning("QPaintDevice::metrics: Device has no metric information"); + if (m == PdmDpiX) { return 72; } else if (m == PdmDpiY) { |