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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:significant reason:default
#include <QtQuick/private/qquickscreen_p.h>
#include <QtQuick/qquickwindow.h>
#include <QtQuick/private/qquickitem_p.h>
#include <QtGui/qguiapplication.h>
#include <QtGui/qscreen.h>
QT_BEGIN_NAMESPACE
/*!
\qmltype Screen
\nativetype QQuickScreenAttached
\inqmlmodule QtQuick
\ingroup qtquick-visual-utility
\brief The Screen attached object provides information about the Screen an Item or Window is displayed on.
The Screen attached object is valid inside Item or Item derived types,
after component completion. Inside these items it refers to the screen that
the item is currently being displayed on.
The attached object is also valid inside Window or Window derived types,
after component completion. In that case it refers to the screen where the
Window was created. It is generally better to access the Screen from the
relevant Item instead, because on a multi-screen desktop computer, the user
can drag a Window into a position where it spans across multiple screens.
In that case some Items will be on one screen, and others on a different
screen.
To use this type, you will need to import the module with the following line:
\code
import QtQuick.Window 2.2
\endcode
It is a separate import in order to allow you to have a QML environment
without access to window system features.
Note that the Screen type is not valid at Component.onCompleted, because
the Item or Window has not been displayed on a screen by this time.
\sa {Qt Quick Examples - Window and Screen}
*/
/*!
\qmlattachedproperty string Screen::name
\readonly
\since 5.1
The name of the screen.
*/
/*!
\qmlattachedproperty int Screen::virtualX
\readonly
\since 5.9
The x coordinate of the screen within the virtual desktop.
*/
/*!
\qmlattachedproperty int Screen::virtualY
\readonly
\since 5.9
The y coordinate of the screen within the virtual desktop.
*/
/*!
\qmlattachedproperty string Screen::manufacturer
\readonly
\since 5.10
The manufacturer of the screen.
*/
/*!
\qmlattachedproperty string Screen::model
\readonly
\since 5.10
The model of the screen.
*/
/*!
\qmlattachedproperty string Screen::serialNumber
\readonly
\since 5.10
The serial number of the screen.
*/
/*!
\qmlattachedproperty int Screen::width
\readonly
This contains the width of the screen in pixels.
*/
/*!
\qmlattachedproperty int Screen::height
\readonly
This contains the height of the screen in pixels.
*/
/*!
\qmlattachedproperty int Screen::desktopAvailableWidth
\readonly
\since 5.1
This contains the available width of the collection of screens which make
up the virtual desktop, in pixels, excluding window manager reserved areas
such as task bars and system menus. If you want to position a Window at
the right of the desktop, you can bind to it like this:
\code
x: Screen.desktopAvailableWidth - width
\endcode
*/
/*!
\qmlattachedproperty int Screen::desktopAvailableHeight
\readonly
\since 5.1
This contains the available height of the collection of screens which make
up the virtual desktop, in pixels, excluding window manager reserved areas
such as task bars and system menus. If you want to position a Window at
the bottom of the desktop, you can bind to it like this:
\code
y: Screen.desktopAvailableHeight - height
\endcode
*/
/*!
\qmlattachedproperty real Screen::logicalPixelDensity
\readonly
\since 5.1
\deprecated
The number of logical pixels per millimeter. This is the effective pixel
density provided by the platform to use in image scaling calculations.
Due to inconsistencies in how logical pixel density is handled across
the various platforms Qt supports, it is recommended to
use physical pixels instead (via the \c pixelDensity property) for
portability.
\sa pixelDensity
*/
/*!
\qmlattachedproperty real Screen::pixelDensity
\readonly
\since 5.2
The number of physical pixels per millimeter.
*/
/*!
\qmlattachedproperty real Screen::devicePixelRatio
\readonly
\since 5.4
The ratio between physical pixels and device-independent pixels for the screen.
Common values are 1.0 on normal displays and 2.0 on Apple "retina" displays.
*/
/*!
\qmlattachedproperty Qt::ScreenOrientation Screen::primaryOrientation
\readonly
This contains the primary orientation of the screen. If the
screen's height is greater than its width, then the orientation is
Qt.PortraitOrientation; otherwise it is Qt.LandscapeOrientation.
If you are designing an application which changes its layout depending on
device orientation, you probably want to use primaryOrientation to
determine the layout. That is because on a desktop computer, you can expect
primaryOrientation to change when the user rotates the screen via the
operating system's control panel, even if the computer does not contain an
accelerometer. Likewise on most handheld computers which do have
accelerometers, the operating system will rotate the whole screen
automatically, so again you will see the primaryOrientation change.
*/
/*!
\qmlattachedproperty Qt::ScreenOrientation Screen::orientation
\readonly
This contains the current orientation of the screen from the
window system perspective.
Most mobile devices and tablet computers contain accelerometer sensors.
The windowing system may rotate the entire screen automatically
based on how it is being held, or manually via settings to rotate a desktop
monitor; in that case, this \c orientation property will change.
\sa primaryOrientation, QWindow::contentOrientation()
*/
/*!
\qmlattachedproperty rect Screen::geometry
\readonly
\since 6.13
This property holds the screen's geometry in pixels.
*/
/*!
\qmlattachedproperty rect Screen::availableGeometry
\readonly
\since 6.13
This property holds the screen's available geometry in pixels, excluding
window manager reserved areas such as task bars and system menus.
*/
/*!
\qmlattachedproperty rect Screen::desktopGeometry
\readonly
\since 6.13
This property holds the geometry of the virtual desktop in pixels.
*/
/*!
\qmlattachedproperty rect Screen::availableDesktopGeometry
\readonly
\since 6.13
This property holds the available geometry of the virtual desktop in
pixels, excluding window manager reserved areas such as task bars and
system menus.
*/
/*!
\qmlattachedmethod int Screen::angleBetween(Qt::ScreenOrientation a, Qt::ScreenOrientation b)
Returns the rotation angle, in degrees, between the specified screen
orientations \a a and \a b.
*/
QQuickScreenInfo::QQuickScreenInfo(QObject *parent, QScreen *wrappedScreen)
: QObject(parent)
{
setWrappedScreen(wrappedScreen);
}
QString QQuickScreenInfo::name() const
{
if (!m_screen)
return QString();
return m_screen->name();
}
QString QQuickScreenInfo::manufacturer() const
{
if (!m_screen)
return QString();
return m_screen->manufacturer();
}
QString QQuickScreenInfo::model() const
{
if (!m_screen)
return QString();
return m_screen->model();
}
QString QQuickScreenInfo::serialNumber() const
{
if (!m_screen)
return QString();
return m_screen->serialNumber();
}
int QQuickScreenInfo::width() const
{
if (!m_screen)
return 0;
return m_screen->size().width();
}
int QQuickScreenInfo::height() const
{
if (!m_screen)
return 0;
return m_screen->size().height();
}
int QQuickScreenInfo::desktopAvailableWidth() const
{
if (!m_screen)
return 0;
return m_screen->availableVirtualSize().width();
}
int QQuickScreenInfo::desktopAvailableHeight() const
{
if (!m_screen)
return 0;
return m_screen->availableVirtualSize().height();
}
qreal QQuickScreenInfo::logicalPixelDensity() const
{
if (!m_screen)
return 0.0;
return m_screen->logicalDotsPerInch() / 25.4;
}
qreal QQuickScreenInfo::pixelDensity() const
{
if (!m_screen)
return 0.0;
return m_screen->physicalDotsPerInch() / 25.4;
}
qreal QQuickScreenInfo::devicePixelRatio() const
{
if (!m_screen)
return 1.0;
return m_screen->devicePixelRatio();
}
Qt::ScreenOrientation QQuickScreenInfo::primaryOrientation() const
{
if (!m_screen)
return Qt::PrimaryOrientation;
return m_screen->primaryOrientation();
}
Qt::ScreenOrientation QQuickScreenInfo::orientation() const
{
if (!m_screen)
return Qt::PrimaryOrientation;
return m_screen->orientation();
}
int QQuickScreenInfo::virtualX() const
{
if (!m_screen)
return 0;
return m_screen->geometry().topLeft().x();
}
int QQuickScreenInfo::virtualY() const
{
if (!m_screen)
return 0;
return m_screen->geometry().topLeft().y();
}
QRect QQuickScreenInfo::geometry() const
{
if (!m_screen)
return {};
return m_screen->geometry();
}
QRect QQuickScreenInfo::availableGeometry() const
{
if (!m_screen)
return {};
return m_screen->availableGeometry();
}
QRect QQuickScreenInfo::desktopGeometry() const
{
if (!m_screen)
return {};
return m_screen->virtualGeometry();
}
QRect QQuickScreenInfo::availableDesktopGeometry() const
{
if (!m_screen)
return {};
return m_screen->availableVirtualGeometry();
}
void QQuickScreenInfo::setWrappedScreen(QScreen *screen)
{
if (screen == m_screen)
return;
QScreen *oldScreen = m_screen;
m_screen = screen;
if (oldScreen)
oldScreen->disconnect(this);
if (!screen) //Don't bother emitting signals, because the new values are garbage anyways
return;
if (!oldScreen || screen->geometry() != oldScreen->geometry()) {
emit virtualXChanged();
emit virtualYChanged();
emit geometryChanged();
}
if (!oldScreen || screen->size() != oldScreen->size()) {
emit widthChanged();
emit heightChanged();
}
if (!oldScreen || screen->name() != oldScreen->name())
emit nameChanged();
if (!oldScreen || screen->manufacturer() != oldScreen->manufacturer())
emit manufacturerChanged();
if (!oldScreen || screen->model() != oldScreen->model())
emit modelChanged();
if (!oldScreen || screen->serialNumber() != oldScreen->serialNumber())
emit serialNumberChanged();
if (!oldScreen || screen->orientation() != oldScreen->orientation())
emit orientationChanged();
if (!oldScreen || screen->primaryOrientation() != oldScreen->primaryOrientation())
emit primaryOrientationChanged();
if (!oldScreen || screen->availableGeometry() != oldScreen->availableGeometry())
emit availableGeometryChanged();
if (!oldScreen
|| screen->virtualGeometry() != oldScreen->virtualGeometry()
|| screen->availableVirtualGeometry() != oldScreen->availableVirtualGeometry()) {
emit desktopGeometryChanged();
}
if (!oldScreen || screen->availableVirtualGeometry() != oldScreen->availableVirtualGeometry())
emit availableDesktopGeometryChanged();
if (!oldScreen || screen->logicalDotsPerInch() != oldScreen->logicalDotsPerInch())
emit logicalPixelDensityChanged();
if (!oldScreen || screen->physicalDotsPerInch() != oldScreen->physicalDotsPerInch())
emit pixelDensityChanged();
if (!oldScreen || screen->devicePixelRatio() != oldScreen->devicePixelRatio())
emit devicePixelRatioChanged();
qmlobject_connect(screen, QScreen, SIGNAL(geometryChanged(QRect)),
this, QQuickScreenInfo, SIGNAL(widthChanged()));
qmlobject_connect(screen, QScreen, SIGNAL(geometryChanged(QRect)),
this, QQuickScreenInfo, SIGNAL(heightChanged()));
qmlobject_connect(screen, QScreen, SIGNAL(geometryChanged(QRect)),
this, QQuickScreenInfo, SIGNAL(virtualXChanged()));
qmlobject_connect(screen, QScreen, SIGNAL(geometryChanged(QRect)),
this, QQuickScreenInfo, SIGNAL(virtualYChanged()));
qmlobject_connect(screen, QScreen, SIGNAL(geometryChanged(QRect)),
this, QQuickScreenInfo, SIGNAL(geometryChanged()));
qmlobject_connect(screen, QScreen, SIGNAL(orientationChanged(Qt::ScreenOrientation)),
this, QQuickScreenInfo, SIGNAL(orientationChanged()));
qmlobject_connect(screen, QScreen, SIGNAL(primaryOrientationChanged(Qt::ScreenOrientation)),
this, QQuickScreenInfo, SIGNAL(primaryOrientationChanged()));
qmlobject_connect(screen, QScreen, SIGNAL(virtualGeometryChanged(QRect)),
this, QQuickScreenInfo, SIGNAL(desktopGeometryChanged()));
qmlobject_connect(screen, QScreen, SIGNAL(virtualGeometryChanged(QRect)),
this, QQuickScreenInfo, SIGNAL(availableDesktopGeometryChanged()));
qmlobject_connect(screen, QScreen, SIGNAL(logicalDotsPerInchChanged(qreal)),
this, QQuickScreenInfo, SIGNAL(logicalPixelDensityChanged()));
qmlobject_connect(screen, QScreen, SIGNAL(physicalDotsPerInchChanged(qreal)),
this, QQuickScreenInfo, SIGNAL(pixelDensityChanged()));
qmlobject_connect(screen, QScreen, SIGNAL(availableGeometryChanged(QRect)),
this, QQuickScreenInfo, SIGNAL(availableGeometryChanged()));
}
QScreen *QQuickScreenInfo::wrappedScreen() const
{
return m_screen;
}
QQuickScreenAttached::QQuickScreenAttached(QObject* attachee)
: QQuickScreenInfo(attachee)
{
m_attachee = qobject_cast<QQuickItem*>(attachee);
if (m_attachee) {
QQuickItemPrivate::get(m_attachee)->extra.value().screenAttached = this;
if (m_attachee->window()) //It might not be assigned to a window yet
windowChanged(m_attachee->window());
} else {
QQuickWindow *window = qobject_cast<QQuickWindow*>(attachee);
if (window)
windowChanged(window);
}
if (!m_screen)
screenChanged(QGuiApplication::primaryScreen());
}
int QQuickScreenAttached::angleBetween(int a, int b)
{
if (!m_screen)
return Qt::PrimaryOrientation;
return m_screen->angleBetween((Qt::ScreenOrientation)a,(Qt::ScreenOrientation)b);
}
void QQuickScreenAttached::windowChanged(QQuickWindow* c)
{
if (m_window)
qmlobject_disconnect(m_window, QQuickWindow, SIGNAL(screenChanged(QScreen*)), this, QQuickScreenAttached, SLOT(screenChanged(QScreen*)));
m_window = c;
screenChanged(c ? c->screen() : nullptr);
if (c)
qmlobject_connect(c, QQuickWindow, SIGNAL(screenChanged(QScreen*)), this, QQuickScreenAttached, SLOT(screenChanged(QScreen*)));
}
void QQuickScreenAttached::screenChanged(QScreen *screen)
{
//qDebug() << "QQuickScreenAttached::screenChanged" << (screen ? screen->name() : QString::fromLatin1("null"));
if (screen != m_screen)
setWrappedScreen(screen);
}
QT_END_NAMESPACE
#include "moc_qquickscreen_p.cpp"