diff options
Diffstat (limited to 'src/gui/painting/qpaintdevice.cpp')
| -rw-r--r-- | src/gui/painting/qpaintdevice.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/gui/painting/qpaintdevice.cpp b/src/gui/painting/qpaintdevice.cpp index bbf8e8f170..27d4bbcfd7 100644 --- a/src/gui/painting/qpaintdevice.cpp +++ b/src/gui/painting/qpaintdevice.cpp @@ -41,6 +41,8 @@ QPaintDevice::QPaintDevice() Q_DECL_NOEXCEPT painters = 0; } +qreal QPaintDevice::devicePixelRatioFScale = 10000000.0; + QPaintDevice::~QPaintDevice() { if (paintingActive()) @@ -79,7 +81,13 @@ 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) { @@ -95,4 +103,5 @@ int QPaintDevice::metric(PaintDeviceMetric m) const } } + QT_END_NAMESPACE |