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Internal/Contributor docs for the Qt SDK. Note: These are NOT official API docs; those are found at https://doc.qt.io/
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Public Member Functions | List of all members
QIOSScreen Class Reference

#include <qiosscreen.h>

+ Inheritance diagram for QIOSScreen:
+ Collaboration diagram for QIOSScreen:

Public Member Functions

 QIOSScreen (UIScreen *screen)
 
 ~QIOSScreen ()
 
QString name () const override
 
QRect geometry () const override
 Reimplement in subclass to return the pixel geometry of the screen.
 
QRect availableGeometry () const override
 Reimplement in subclass to return the pixel geometry of the available space This normally is the desktop screen minus the task manager, global menubar etc.
 
int depth () const override
 Reimplement in subclass to return current depth of the screen.
 
QImage::Format format () const override
 Reimplement in subclass to return the image format which corresponds to the screen format.
 
QSizeF physicalSize () const override
 Reimplement this function in subclass to return the physical size of the screen, in millimeters.
 
QDpi logicalBaseDpi () const override
 Reimplement to return the base logical DPI for the platform.
 
qreal devicePixelRatio () const override
 Reimplement this function in subclass to return the device pixel ratio for the screen.
 
qreal refreshRate () const override
 Reimplement this function in subclass to return the vertical refresh rate of the screen, in Hz.
 
Qt::ScreenOrientation nativeOrientation () const override
 Reimplement this function in subclass to return the native orientation of the screen, e.g.
 
Qt::ScreenOrientation orientation () const override
 Reimplement this function in subclass to return the current orientation of the screen, for example based on accelerometer data to determine the device orientation.
 
QPixmap grabWindow (WId window, int x, int y, int width, int height) const override
 This function is called when Qt needs to be able to grab the content of a window.
 
UIScreen * uiScreen () const
 
void setUpdatesPaused (bool)
 
void updateProperties ()
 
- Public Member Functions inherited from QObject
Q_INVOKABLE QObject (QObject *parent=nullptr)
 Constructs an object with parent object parent.
 
virtual ~QObject ()
 Destroys the object, deleting all its child objects.
 
virtual bool event (QEvent *event)
 This virtual function receives events to an object and should return true if the event e was recognized and processed.
 
virtual bool eventFilter (QObject *watched, QEvent *event)
 Filters events if this object has been installed as an event filter for the watched object.
 
QString objectName () const
 
Q_WEAK_OVERLOAD void setObjectName (const QString &name)
 Sets the object's name to name.
 
void setObjectName (QAnyStringView name)
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
 
QBindable< QString > bindableObjectName ()
 
bool isWidgetType () const
 Returns true if the object is a widget; otherwise returns false.
 
bool isWindowType () const
 Returns true if the object is a window; otherwise returns false.
 
bool isQuickItemType () const
 Returns true if the object is a QQuickItem; otherwise returns false.
 
bool signalsBlocked () const noexcept
 Returns true if signals are blocked; otherwise returns false.
 
bool blockSignals (bool b) noexcept
 If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it).
 
QThread * thread () const
 Returns the thread in which the object lives.
 
bool moveToThread (QThread *thread QT6_DECL_NEW_OVERLOAD_TAIL)
 Changes the thread affinity for this object and its children and returns true on success.
 
int startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)
 This is an overloaded function that will start a timer of type timerType and a timeout of interval milliseconds.
 
int startTimer (std::chrono::nanoseconds time, Qt::TimerType timerType=Qt::CoarseTimer)
 
void killTimer (int id)
 Kills the timer with timer identifier, id.
 
void killTimer (Qt::TimerId id)
 
template<typename T >
T findChild (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 Returns the child of this object that can be cast into type T and that is called name, or \nullptr if there is no such object.
 
template<typename T >
QList< T > findChildren (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects.
 
template<typename T >
T findChild (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
 
template<typename T >
QList< T > findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
 
const QObjectList & children () const
 Returns a list of child objects.
 
void setParent (QObject *parent)
 Makes the object a child of parent.
 
void installEventFilter (QObject *filterObj)
 Installs an event filter filterObj on this object.
 
void removeEventFilter (QObject *obj)
 Removes an event filter object obj from this object.
 
QMetaObject::Connection connect (const QObject *sender, const char *signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const
 
bool disconnect (const char *signal=nullptr, const QObject *receiver=nullptr, const char *member=nullptr) const
 
bool disconnect (const QObject *receiver, const char *member=nullptr) const
 
void dumpObjectTree () const
 Dumps a tree of children to the debug output.
 
void dumpObjectInfo () const
 Dumps information about signal connections, etc.
 
bool setProperty (const char *name, const QVariant &value)
 Sets the value of the object's name property to value.
 
bool setProperty (const char *name, QVariant &&value)
 
QVariant property (const char *name) const
 Returns the value of the object's name property.
 
QList< QByteArray > dynamicPropertyNames () const
 
QBindingStorage * bindingStorage ()
 
const QBindingStorage * bindingStorage () const
 
QObject * parent () const
 Returns a pointer to the parent object.
 
bool inherits (const char *classname) const
 Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false.
 
- Public Member Functions inherited from QPlatformScreen
 QPlatformScreen ()
 
virtual ~QPlatformScreen ()
 
virtual bool isPlaceholder () const
 
virtual QColorSpace colorSpace () const
 
virtual QDpi logicalDpi () const
 Reimplement this function in subclass to return the logical horizontal and vertical dots per inch metrics of the screen.
 
virtual QWindow * topLevelAt (const QPoint &point) const
 Return the given top level window for a given position.
 
QWindowList windows () const
 Return all windows residing on this screen.
 
virtual QList< QPlatformScreen * > virtualSiblings () const
 Returns a list of all the platform screens that are part of the same virtual desktop.
 
const QPlatformScreen * screenForPosition (const QPoint &point) const
 Find the sibling screen corresponding to globalPos.
 
QScreen * screen () const
 
virtual QString manufacturer () const
 Reimplement this function in subclass to return the manufacturer of this screen.
 
virtual QString model () const
 Reimplement this function in subclass to return the model of this screen.
 
virtual QString serialNumber () const
 Reimplement this function in subclass to return the serial number of this screen.
 
virtual QPlatformCursor * cursor () const
 Reimplement this function in subclass to return the cursor of the screen.
 
virtual SubpixelAntialiasingType subpixelAntialiasingTypeHint () const
 Returns a hint about this screen's subpixel layout structure.
 
virtual PowerState powerState () const
 Returns the current power state.
 
virtual void setPowerState (PowerState state)
 Sets the power state for this screen.
 
virtual QList< Mode > modes () const
 Reimplement this function in subclass to return the list of modes for this screen.
 
virtual int currentMode () const
 Reimplement this function in subclass to return the index of the current mode from the modes list.
 
virtual int preferredMode () const
 Reimplement this function in subclass to return the preferred mode index from the modes list.
 

Additional Inherited Members

- Public Types inherited from QPlatformScreen
enum  SubpixelAntialiasingType {
  Subpixel_None , Subpixel_RGB , Subpixel_BGR , Subpixel_VRGB ,
  Subpixel_VBGR
}
 
enum  PowerState { PowerStateOn , PowerStateStandby , PowerStateSuspend , PowerStateOff }
 
- Public Slots inherited from QObject
void deleteLater ()
 \threadsafe
 
- Signals inherited from QObject
void destroyed (QObject *=nullptr)
 This signal is emitted immediately before the object obj is destroyed, after any instances of QPointer have been notified, and cannot be blocked.
 
void objectNameChanged (const QString &objectName, QPrivateSignal)
 This signal is emitted after the object's name has been changed.
 
- Static Public Member Functions inherited from QObject
static QMetaObject::Connection connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection)
 \threadsafe
 
static QMetaObject::Connection connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)
 
template<typename Func1 , typename Func2 >
static QMetaObject::Connection connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::ContextTypeForFunctor< Func2 >::ContextType *context, Func2 &&slot, Qt::ConnectionType type=Qt::AutoConnection)
 
template<typename Func1 , typename Func2 >
static QMetaObject::Connection connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 &&slot)
 
static bool disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *member)
 \threadsafe
 
static bool disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &member)
 
static bool disconnect (const QMetaObject::Connection &)
 Disconnect a connection.
 
template<typename Func1 , typename Func2 >
static bool disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object *receiver, Func2 slot)
 
template<typename Func1 >
static bool disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const QObject *receiver, void **zero)
 
- Static Public Member Functions inherited from QPlatformScreen
static QPlatformScreen * platformScreenForWindow (const QWindow *window)
 
static int angleBetween (Qt::ScreenOrientation a, Qt::ScreenOrientation b)
 
static QTransform transformBetween (Qt::ScreenOrientation a, Qt::ScreenOrientation b, const QRect &target)
 
static QRect mapBetween (Qt::ScreenOrientation a, Qt::ScreenOrientation b, const QRect &rect)
 
static QDpi overrideDpi (const QDpi &in)
 
- Protected Member Functions inherited from QObject
QObject * sender () const
 Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns \nullptr.
 
int senderSignalIndex () const
 
int receivers (const char *signal) const
 Returns the number of receivers connected to the signal.
 
bool isSignalConnected (const QMetaMethod &signal) const
 
virtual void timerEvent (QTimerEvent *event)
 This event handler can be reimplemented in a subclass to receive timer events for the object.
 
virtual void childEvent (QChildEvent *event)
 This event handler can be reimplemented in a subclass to receive child events.
 
virtual void customEvent (QEvent *event)
 This event handler can be reimplemented in a subclass to receive custom events.
 
virtual void connectNotify (const QMetaMethod &signal)
 
virtual void disconnectNotify (const QMetaMethod &signal)
 
 QObject (QObjectPrivate &dd, QObject *parent=nullptr)
 
- Protected Member Functions inherited from QPlatformScreen
void resizeMaximizedWindows ()
 Convenience method to resize all the maximized and fullscreen windows of this platform screen.
 
- Protected Attributes inherited from QObject
QScopedPointer< QObjectData > d_ptr
 
- Protected Attributes inherited from QPlatformScreen
QScopedPointer< QPlatformScreenPrivate > d_ptr
 
- Properties inherited from QObject
QString objectName
 the name of this object
 
- Related Symbols inherited from QObject
 Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.
 
 
 
 \macro Q_CLASSINFO(Name, Value)
 

Detailed Description

Definition at line 15 of file qiosscreen.h.

Constructor & Destructor Documentation

◆ QIOSScreen()

QIOSScreen::QIOSScreen ( UIScreen * screen)

Definition at line 144 of file qiosscreen.mm.

◆ ~QIOSScreen()

QIOSScreen::~QIOSScreen ( )

Definition at line 188 of file qiosscreen.mm.

Member Function Documentation

◆ availableGeometry()

QRect QIOSScreen::availableGeometry ( ) const
overridevirtual

Reimplement in subclass to return the pixel geometry of the available space This normally is the desktop screen minus the task manager, global menubar etc.

Reimplemented from QPlatformScreen.

Definition at line 297 of file qiosscreen.mm.

◆ depth()

int QIOSScreen::depth ( ) const
overridevirtual

Reimplement in subclass to return current depth of the screen.

Implements QPlatformScreen.

Definition at line 302 of file qiosscreen.mm.

◆ devicePixelRatio()

qreal QIOSScreen::devicePixelRatio ( ) const
overridevirtual

Reimplement this function in subclass to return the device pixel ratio for the screen.

This is the ratio between physical pixels and the device-independent pixels of the windowing system. The default implementation returns 1.0.

See also
QPlatformWindow::devicePixelRatio()

Reimplemented from QPlatformScreen.

Definition at line 322 of file qiosscreen.mm.

◆ format()

QImage::Format QIOSScreen::format ( ) const
overridevirtual

Reimplement in subclass to return the image format which corresponds to the screen format.

Implements QPlatformScreen.

Definition at line 307 of file qiosscreen.mm.

◆ geometry()

QRect QIOSScreen::geometry ( ) const
overridevirtual

Reimplement in subclass to return the pixel geometry of the screen.

Implements QPlatformScreen.

Definition at line 292 of file qiosscreen.mm.

◆ grabWindow()

QPixmap QIOSScreen::grabWindow ( WId window,
int x,
int y,
int width,
int height ) const
overridevirtual

This function is called when Qt needs to be able to grab the content of a window.

Returns the content of the window specified with the WId handle within the boundaries of QRect(x,y,width,height).

Reimplemented from QPlatformScreen.

Definition at line 374 of file qiosscreen.mm.

◆ logicalBaseDpi()

QDpi QIOSScreen::logicalBaseDpi ( ) const
overridevirtual

Reimplement to return the base logical DPI for the platform.

This DPI value should correspond to a standard-DPI (1x) display. The default implementation returns 96.

QtGui will use this value (together with logicalDpi) to compute the scale factor when high-DPI scaling is enabled, as follows: factor = logicalDPI / baseDPI

Reimplemented from QPlatformScreen.

Definition at line 317 of file qiosscreen.mm.

◆ name()

QString QIOSScreen::name ( ) const
overridevirtual

Reimplemented from QPlatformScreen.

Definition at line 193 of file qiosscreen.mm.

Referenced by testing.tools.encode_pdf_filter._PdfStream::RegisterByName().

+ Here is the caller graph for this function:

◆ nativeOrientation()

Qt::ScreenOrientation QIOSScreen::nativeOrientation ( ) const
overridevirtual

Reimplement this function in subclass to return the native orientation of the screen, e.g.

the orientation where the logo sticker of the device appears the right way up.

The default implementation returns Qt::PrimaryOrientation.

Reimplemented from QPlatformScreen.

Definition at line 343 of file qiosscreen.mm.

◆ orientation()

Qt::ScreenOrientation QIOSScreen::orientation ( ) const
overridevirtual

Reimplement this function in subclass to return the current orientation of the screen, for example based on accelerometer data to determine the device orientation.

The default implementation returns Qt::PrimaryOrientation.

Reimplemented from QPlatformScreen.

Definition at line 363 of file qiosscreen.mm.

◆ physicalSize()

QSizeF QIOSScreen::physicalSize ( ) const
overridevirtual

Reimplement this function in subclass to return the physical size of the screen, in millimeters.

The physical size represents the actual physical dimensions of the display.

The default implementation takes the pixel size of the screen, considers a resolution of 100 dots per inch, and returns the calculated physical size. A device with a screen that has different resolutions will need to be supported by a suitable reimplementation of this function.

See also
logcalDpi

Reimplemented from QPlatformScreen.

Definition at line 312 of file qiosscreen.mm.

◆ refreshRate()

qreal QIOSScreen::refreshRate ( ) const
overridevirtual

Reimplement this function in subclass to return the vertical refresh rate of the screen, in Hz.

The default returns 60, a sensible default for modern displays.

Reimplemented from QPlatformScreen.

Definition at line 334 of file qiosscreen.mm.

◆ setUpdatesPaused()

void QIOSScreen::setUpdatesPaused ( bool paused)

Definition at line 259 of file qiosscreen.mm.

◆ uiScreen()

UIScreen * QIOSScreen::uiScreen ( ) const

Definition at line 408 of file qiosscreen.mm.

◆ updateProperties()

void QIOSScreen::updateProperties ( )

Definition at line 205 of file qiosscreen.mm.

The documentation for this class was generated from the following files: