int QWidget::metric(PaintDeviceMetric m) const
{
Q_D(const QWidget);
QScreen *screen = 0;
if (QWidget *topLevel = window())
if (QWindow *topLevelWindow = topLevel->windowHandle()) {
QPlatformScreen *platformScreen = QPlatformScreen::platformScreenForWindow(topLevelWindow);
if (platformScreen)
screen = platformScreen->screen();
}
if (!screen && QGuiApplication::primaryScreen())
screen = QGuiApplication::primaryScreen();
if (!screen) {
if (m == PdmDpiX || m == PdmDpiY)
return 72;
return QPaintDevice::metric(m);
}
int val;
if (m == PdmWidth) {
val = data->crect.width();
} else if (m == PdmWidthMM) {
val = data->crect.width() * screen->physicalSize().width() / screen->geometry().width();
} else if (m == PdmHeight) {
val = data->crect.height();
} else if (m == PdmHeightMM) {
val = data->crect.height() * screen->physicalSize().height() / screen->geometry().height();
} else if (m == PdmDepth) {
return screen->depth();
} else if (m == PdmDpiX) {
if (d->extra && d->extra->customDpiX)
return d->extra->customDpiX;
else if (d->parent)
return static_cast<QWidget *>(d->parent)->metric(m);
return qRound(screen->logicalDotsPerInchX());
} else if (m == PdmDpiY) {
if (d->extra && d->extra->customDpiY)
return d->extra->customDpiY;
else if (d->parent)
return static_cast<QWidget *>(d->parent)->metric(m);
return qRound(screen->logicalDotsPerInchY());
} else if (m == PdmPhysicalDpiX) {
return qRound(screen->physicalDotsPerInchX());
} else if (m == PdmPhysicalDpiY) {
return qRound(screen->physicalDotsPerInchY());
} else if (m == PdmDevicePixelRatio) {
return screen->devicePixelRatio();
} else {
val = QPaintDevice::metric(m);// XXX
}
return val;
}
/*!
\internal
*/
int QPaintDeviceWindow::metric(PaintDeviceMetric metric) const
{
QScreen *screen = this->screen();
if (!screen && QGuiApplication::primaryScreen())
screen = QGuiApplication::primaryScreen();
switch (metric) {
case PdmWidth:
return width();
case PdmWidthMM:
if (screen)
return width() * screen->physicalSize().width() / screen->geometry().width();
break;
case PdmHeight:
return height();
case PdmHeightMM:
if (screen)
return height() * screen->physicalSize().height() / screen->geometry().height();
break;
case PdmDpiX:
if (screen)
return qRound(screen->logicalDotsPerInchX());
break;
case PdmDpiY:
if (screen)
return qRound(screen->logicalDotsPerInchY());
break;
case PdmPhysicalDpiX:
if (screen)
return qRound(screen->physicalDotsPerInchX());
break;
case PdmPhysicalDpiY:
if (screen)
return qRound(screen->physicalDotsPerInchY());
break;
case PdmDevicePixelRatio:
if (screen)
return screen->devicePixelRatio();
break;
default:
break;
}
return QPaintDevice::metric(metric);
}