#include <qxcbscreen.h>

Inheritance diagram for QXcbScreen:

Public Functions
int	depth () const
	Reimplement in subclass to return current depth of the screen. More...

QImage::Format	format () const
	Reimplement in subclass to return the image format which corresponds to the screen format. More...

QRect	geometry () const
	Reimplement in subclass to return the pixel geometry of the screen. More...

QSize	physicalSize () const
	Reimplement this function in subclass to return the physical size of the screen. More...

	QXcbScreen (QXcbConnection connection, xcb_screen_t screen, int number)

xcb_window_t	root () const

xcb_screen_t *	screen () const

int	screenNumber () const

bool	syncRequestSupported () const

QString	windowManagerName () const

	~QXcbScreen ()

Public Functions inherited from QXcbObject
xcb_atom_t	atom (QXcbAtom::Atom atom) const

QXcbConnection *	connection () const

	QXcbObject (QXcbConnection *connection=0)

void	setConnection (QXcbConnection *connection)

xcb_connection_t *	xcb_connection () const

Public Functions inherited from QPlatformScreen
virtual QRect	availableGeometry () const
	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. More...

virtual void	setDirty (const QRect &)

virtual QWidget *	topLevelAt (const QPoint &point) const
	Return the given top level widget for a given position. More...

virtual	~QPlatformScreen ()

Public Functions inherited from QObject
bool	blockSignals (bool b)
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). More...

const QObjectList &	children () const
	Returns a list of child objects. More...

bool	connect (const QObject sender, const char signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const

bool	disconnect (const char signal=0, const QObject receiver=0, const char *member=0)

bool	disconnect (const QObject receiver, const char member=0)

void	dumpObjectInfo ()
	Dumps information about signal connections, etc. More...

void	dumpObjectTree ()
	Dumps a tree of children to the debug output. More...

QList< QByteArray >	dynamicPropertyNames () const
	Returns the names of all properties that were dynamically added to the object using setProperty(). More...

virtual bool	event (QEvent *)
	This virtual function receives events to an object and should return true if the event e was recognized and processed. More...

virtual bool	eventFilter (QObject , QEvent )
	Filters events if this object has been installed as an event filter for the watched object. More...

template<typename T >
T	findChild (const QString &aName=QString()) const
	Returns the child of this object that can be cast into type T and that is called name, or 0 if there is no such object. More...

template<typename T >
QList< T >	findChildren (const QString &aName=QString()) 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. More...

template<typename T >
QList< T >	findChildren (const QRegExp &re) const

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. More...

void	installEventFilter (QObject *)
	Installs an event filter filterObj on this object. More...

bool	isWidgetType () const
	Returns true if the object is a widget; otherwise returns false. More...

void	killTimer (int id)
	Kills the timer with timer identifier, id. More...

virtual const QMetaObject *	metaObject () const
	Returns a pointer to the meta-object of this object. More...

void	moveToThread (QThread *thread)
	Changes the thread affinity for this object and its children. More...

QString	objectName () const

QObject *	parent () const
	Returns a pointer to the parent object. More...

QVariant	property (const char *name) const
	Returns the value of the object's name property. More...

Q_INVOKABLE	QObject (QObject *parent=0)
	Constructs an object with parent object parent. More...

void	removeEventFilter (QObject *)
	Removes an event filter object obj from this object. More...

void	setObjectName (const QString &name)

void	setParent (QObject *)
	Makes the object a child of parent. More...

bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value. More...

void	setUserData (uint id, QObjectUserData *data)

bool	signalsBlocked () const
	Returns true if signals are blocked; otherwise returns false. More...

int	startTimer (int interval)
	Starts a timer and returns a timer identifier, or returns zero if it could not start a timer. More...

QThread *	thread () const
	Returns the thread in which the object lives. More...

QObjectUserData *	userData (uint id) const

virtual	~QObject ()
	Destroys the object, deleting all its child objects. More...

Properties
int	m_number

xcb_screen_t *	m_screen

bool	m_syncRequestSupported

QString	m_windowManagerName

Additional Inherited Members
Public Slots inherited from QObject
void	deleteLater ()
	Schedules this object for deletion. More...

Signals inherited from QObject
void	destroyed (QObject *=0)
	This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More...

Static Public Functions inherited from QPlatformScreen
static QPlatformScreen *	platformScreenForWidget (const QWidget *widget)

Static Public Functions inherited from QObject
static bool	connect (const QObject sender, const char signal, const QObject receiver, const char member, Qt::ConnectionType=Qt::AutoConnection)
	Creates a connection of the given type from the signal in the sender object to the method in the receiver object. More...

static bool	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)

static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)
	Disconnects signal in object sender from method in object receiver. More...

static bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &member)

static uint	registerUserData ()

static QString	tr (const char sourceText, const char comment=0, int n=-1)

static QString	trUtf8 (const char sourceText, const char comment=0, int n=-1)

Static Public Variables inherited from QObject
static const QMetaObject	staticMetaObject
	This variable stores the meta-object for the class. More...

Protected Functions inherited from QObject
virtual void	childEvent (QChildEvent *)
	This event handler can be reimplemented in a subclass to receive child events. More...

virtual void	connectNotify (const char *signal)
	This virtual function is called when something has been connected to signal in this object. More...

virtual void	customEvent (QEvent *)
	This event handler can be reimplemented in a subclass to receive custom events. More...

virtual void	disconnectNotify (const char *signal)
	This virtual function is called when something has been disconnected from signal in this object. More...

	QObject (QObjectPrivate &dd, QObject *parent=0)

int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal. More...

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 0. More...

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *)
	This event handler can be reimplemented in a subclass to receive timer events for the object. More...

Protected Variables inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Static Protected Variables inherited from QObject
static const QMetaObject	staticQtMetaObject

Related Functions inherited from QObject
T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()

QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QRegExp &regExp)()

T *	qobject_cast (QObject *object)

	QObjectList

void *	qt_find_obj_child (QObject parent, const char type, const QString &name)
	Returns a pointer to the object named name that inherits type and with a given parent. More...

Detailed Description

Definition at line 54 of file qxcbscreen.h.

Constructors and Destructors

◆ QXcbScreen()

QXcbScreen::QXcbScreen	(	QXcbConnection *	connection,
		xcb_screen_t *	screen,
		int	number
	)

Definition at line 46 of file qxcbscreen.cpp.

     : QXcbObject(connection)
     , m_screen(screen)
     , m_number(number)
 {
     printf ("\n");
     printf ("Information of screen %d:\n", screen->root);
     printf ("  width.........: %d\n", screen->width_in_pixels);
     printf ("  height........: %d\n", screen->height_in_pixels);
     printf ("  depth.........: %d\n", screen->root_depth);
     printf ("  white pixel...: %x\n", screen->white_pixel);
     printf ("  black pixel...: %x\n", screen->black_pixel);
     printf ("\n");
 
     const quint32 mask = XCB_CW_EVENT_MASK;
     const quint32 values[] = {
         // XCB_CW_EVENT_MASK
         XCB_EVENT_MASK_ENTER_WINDOW
         | XCB_EVENT_MASK_LEAVE_WINDOW
         | XCB_EVENT_MASK_PROPERTY_CHANGE
     };
 
     xcb_change_window_attributes(xcb_connection(), screen->root, mask, values);
 
     xcb_generic_error_t *error;
 
     xcb_get_property_reply_t *reply =
         xcb_get_property_reply(xcb_connection(),
             xcb_get_property(xcb_connection(), false, screen->root,
                              atom(QXcbAtom::_NET_SUPPORTING_WM_CHECK),
                              XCB_ATOM_WINDOW, 0, 1024), &error);
 
     if (reply && reply->format == 32 && reply->type == XCB_ATOM_WINDOW) {
         xcb_window_t windowManager = *((xcb_window_t *)xcb_get_property_value(reply));
 
         if (windowManager != XCB_WINDOW_NONE) {
             xcb_get_property_reply_t *windowManagerReply =
                 xcb_get_property_reply(xcb_connection(),
                     xcb_get_property(xcb_connection(), false, windowManager,
                                      atom(QXcbAtom::_NET_WM_NAME),
                                      atom(QXcbAtom::UTF8_STRING), 0, 1024), &error);
             if (windowManagerReply && windowManagerReply->format == 8 && windowManagerReply->type == atom(QXcbAtom::UTF8_STRING)) {
                 m_windowManagerName = QString::fromUtf8((const char *)xcb_get_property_value(windowManagerReply), xcb_get_property_value_length(windowManagerReply));
                 printf("Running window manager: %s\n", qPrintable(m_windowManagerName));
             } else if (error) {
                 connection->handleXcbError(error);
                 free(error);
             }
 
             free(windowManagerReply);
         }
     } else if (error) {
         connection->handleXcbError(error);
         free(error);
     }
 
     free(reply);
 
     m_syncRequestSupported = m_windowManagerName != QLatin1String("KWin");
 }

◆ ~QXcbScreen()

QXcbScreen::~QXcbScreen ( )

Definition at line 107 of file qxcbscreen.cpp.

108 {

109 }

Functions

◆ depth()

int QXcbScreen::depth ( ) const

virtual

Reimplement in subclass to return current depth of the screen.

Implements QPlatformScreen.

Definition at line 116 of file qxcbscreen.cpp.

 {
     return m_screen->root_depth;
 }

◆ format()

QImage::Format QXcbScreen::format ( ) const

virtual

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

Implements QPlatformScreen.

Definition at line 121 of file qxcbscreen.cpp.

 {
     return QImage::Format_RGB32;
 }

◆ geometry()

QRect QXcbScreen::geometry ( ) const

virtual

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

Implements QPlatformScreen.

Definition at line 111 of file qxcbscreen.cpp.

 {
     return QRect(0, 0, m_screen->width_in_pixels, m_screen->height_in_pixels);
 }

◆ physicalSize()

QSize QXcbScreen::physicalSize ( ) const

virtual

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

This function is used by QFont to convert point sizes to pixel sizes.

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.

Reimplemented from QPlatformScreen.

Definition at line 126 of file qxcbscreen.cpp.

 {
     return QSize(m_screen->width_in_millimeters, m_screen->height_in_millimeters);
 }

◆ root()

xcb_window_t QXcbScreen::root ( ) const

inline

Definition at line 68 of file qxcbscreen.h.

Referenced by QXcbWindow::handleClientMessageEvent(), QXcbWindow::QXcbWindow(), and QXcbWindow::setVisible().

68 { return m_screen->root; }

QXcbScreen::m_screen

xcb_screen_t * m_screen

Definition: qxcbscreen.h:74

◆ screen()

xcb_screen_t* QXcbScreen::screen ( ) const

inline

Definition at line 67 of file qxcbscreen.h.

Referenced by QXcbWindow::QXcbWindow(), and QXcbNativeInterface::screenForWidget().

67 { return m_screen; }

QXcbScreen::m_screen

xcb_screen_t * m_screen

Definition: qxcbscreen.h:74

◆ screenNumber()

int QXcbScreen::screenNumber ( ) const

Definition at line 131 of file qxcbscreen.cpp.

Referenced by QGLXContext::QGLXContext(), and QXcbWindow::QXcbWindow().

 {
     return m_number;
 }

◆ syncRequestSupported()

bool QXcbScreen::syncRequestSupported ( ) const

inline

Definition at line 71 of file qxcbscreen.h.

Referenced by QXcbWindow::QXcbWindow(), QXcbWindow::updateSyncRequestCounter(), and QXcbWindow::~QXcbWindow().

71 { return m_syncRequestSupported; }

QXcbScreen::m_syncRequestSupported

bool m_syncRequestSupported

Definition: qxcbscreen.h:77

◆ windowManagerName()

QString QXcbScreen::windowManagerName ( ) const

inline

Definition at line 70 of file qxcbscreen.h.

70 { return m_windowManagerName; }

QXcbScreen::m_windowManagerName

QString m_windowManagerName

Definition: qxcbscreen.h:76

Properties

◆ m_number

int QXcbScreen::m_number

private

Definition at line 75 of file qxcbscreen.h.

Referenced by screenNumber().

◆ m_screen

xcb_screen_t* QXcbScreen::m_screen

private

Definition at line 74 of file qxcbscreen.h.

Referenced by depth(), geometry(), physicalSize(), root(), and screen().

◆ m_syncRequestSupported

bool QXcbScreen::m_syncRequestSupported

private

Definition at line 77 of file qxcbscreen.h.

Referenced by QXcbScreen(), and syncRequestSupported().

◆ m_windowManagerName

QString QXcbScreen::m_windowManagerName

private

Definition at line 76 of file qxcbscreen.h.

Referenced by QXcbScreen(), and windowManagerName().

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

/src/plugins/platforms/xcb/qxcbscreen.h
/src/plugins/platforms/xcb/qxcbscreen.cpp

Public Functions

Properties

Additional Inherited Members

Detailed Description

Constructors and Destructors

◆ QXcbScreen()

◆ ~QXcbScreen()

Functions

◆ depth()

◆ format()

◆ geometry()

◆ physicalSize()

◆ root()

◆ screen()

◆ screenNumber()

◆ syncRequestSupported()

◆ windowManagerName()

Properties

◆ m_number

◆ m_screen

◆ m_syncRequestSupported

◆ m_windowManagerName