/*!
Returns the bit depth of the display.
\sa screenHeight(), screenWidth()
*/
int QDirectPainter::screenDepth()
{
QScreen *screen = getPrimaryScreen();
if (!screen)
return 0;
return screen->depth();
}
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;
}
bool QMultiScreen::connect(const QString &displaySpec)
{
QString dSpec = displaySpec;
if (dSpec.startsWith(QLatin1String("Multi:"), Qt::CaseInsensitive))
dSpec = dSpec.mid(QString::fromLatin1("Multi:").size());
const QString displayIdSpec = QString::fromLatin1(" :%1").arg(displayId);
if (dSpec.endsWith(displayIdSpec))
dSpec = dSpec.left(dSpec.size() - displayIdSpec.size());
QStringList specs = dSpec.split(QLatin1Char(' '), QString::SkipEmptyParts);
foreach (QString spec, specs) {
const int id = getDisplayId(spec);
if (spec.startsWith("vnc:", Qt::CaseInsensitive)) {
spec.append(":noDisablePainting");
}
const QPoint offset = filterDisplayOffset(spec);
QScreen *s = qt_get_screen(id, spec.toLatin1().constData());
s->setOffset(offset);
addSubScreen(s);
}
QScreen *firstScreen = d_ptr->screens.at(0);
Q_ASSERT(firstScreen);
// XXX
QScreen::d = firstScreen->depth();
QScreen::lstep = 0;
QScreen::data = 0;
QScreen::size = 0;
QScreen::w = d_ptr->region.boundingRect().width();
QScreen::h = d_ptr->region.boundingRect().height();
QScreen::dw = QScreen::w;
QScreen::dh = QScreen::h;
// XXX - Extend the physical size based on the first screen
// to encompass all screens, so that code that uses the multi
// screen to calculate dpi values will get the right numbers.
QScreen::physWidth = firstScreen->physicalWidth() * w / firstScreen->width();
QScreen::physHeight = firstScreen->physicalHeight() * h / firstScreen->height();
// XXXXX
qt_screen = this;
return true;
}
void GetScreenInfoFromNativeWindow(QWindow* window, blink::WebScreenInfo* results)
{
QScreen* screen = window->screen();
blink::WebScreenInfo r;
r.deviceScaleFactor = screen->devicePixelRatio();
r.depthPerComponent = 8;
r.depth = screen->depth();
r.isMonochrome = (r.depth == 1);
QRect screenGeometry = screen->geometry();
r.rect = blink::WebRect(screenGeometry.x(), screenGeometry.y(), screenGeometry.width(), screenGeometry.height());
QRect available = screen->availableGeometry();
r.availableRect = blink::WebRect(available.x(), available.y(), available.width(), available.height());
*results = r;
}
QImage::Format
QWSMemorySurface::preferredImageFormat(const QWidget *widget) const
{
QScreen *screen = getScreen(widget);
const int depth = screen->depth();
const bool opaque = isWidgetOpaque(widget);
if (!opaque) {
if (depth <= 12)
return QImage::Format_ARGB4444_Premultiplied;
else if (depth <= 15)
return QImage::Format_ARGB8555_Premultiplied;
else if (depth <= 16)
return QImage::Format_ARGB8565_Premultiplied;
else if (depth <= 18)
return QImage::Format_ARGB6666_Premultiplied;
else
return QImage::Format_ARGB32_Premultiplied;
}
QImage::Format format = screen->pixelFormat();
if (format > QImage::Format_Indexed8) // ### assumes all new image formats supports a QPainter
return format;
if (depth <= 12)
return QImage::Format_RGB444;
else if (depth <= 15)
return QImage::Format_RGB555;
else if (depth <= 16)
return QImage::Format_RGB16;
else if (depth <= 18)
return QImage::Format_RGB666;
else if (depth <= 24)
return QImage::Format_RGB888;
else
return QImage::Format_ARGB32_Premultiplied;
}