QEglFSScreen Class Reference

#include <qeglfsscreen.h>

Inheritance diagram for QEglFSScreen:

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...
QPlatformGLContext *	platformContext () const
	QEglFSScreen (EGLNativeDisplayType display)
	~QEglFSScreen ()
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 QSize	physicalSize () const
	Reimplement this function in subclass to return the physical size of the screen. 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...

Private Functions
void	createAndSetPlatformContext () const
void	createAndSetPlatformContext ()

Properties
int	m_depth
EGLDisplay	m_dpy
QImage::Format	m_format
QRect	m_geometry
QPlatformGLContext *	m_platformContext
EGLSurface	m_surface

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 55 of file qeglfsscreen.h.

Constructors and Destructors

QEglFSScreen()

QEglFSScreen::QEglFSScreen

(

EGLNativeDisplayType

display

)

Definition at line 89 of file qeglfsscreen.cpp.

    : m_depth(32)
    , m_format(QImage::Format_Invalid)
    , m_platformContext(0)
    , m_surface(0)
{
#ifdef QEGL_EXTRA_DEBUG
    qWarning("QEglScreen %p\n", this);
#endif

    EGLint major, minor;
#ifdef QEGL_EXTRA_DEBUG
    EGLint index;
#endif
    if (!eglBindAPI(EGL_OPENGL_ES_API)) {
        qWarning("Could not bind GL_ES API\n");
        qFatal("EGL error");
    }

    m_dpy = eglGetDisplay(display);
    if (m_dpy == EGL_NO_DISPLAY) {
        qWarning("Could not open egl display\n");
        qFatal("EGL error");
    }
    qWarning("Opened display %p\n", m_dpy);

    if (!eglInitialize(m_dpy, &major, &minor)) {
        qWarning("Could not initialize egl display\n");
        qFatal("EGL error");
    }

    qWarning("Initialized display %d %d\n", major, minor);

    int swapInterval = 1;
    QByteArray swapIntervalString = qgetenv("QT_QPA_EGLFS_SWAPINTERVAL");
    if (!swapIntervalString.isEmpty()) {
        bool ok;
        swapInterval = swapIntervalString.toInt(&ok);
        if (!ok)
            swapInterval = 1;
    }
    eglSwapInterval(m_dpy, swapInterval);
}

~QEglFSScreen()

QEglFSScreen::~QEglFSScreen ( )

inline

Definition at line 59 of file qeglfsscreen.h.

{}

Functions

createAndSetPlatformContext() [1/2]

void QEglFSScreen::createAndSetPlatformContext ( ) const

private

Definition at line 133 of file qeglfsscreen.cpp.

Referenced by format(), geometry(), platformContext(), and ~QEglFSScreen().

                                                     {
    const_cast<QEglFSScreen *>(this)->createAndSetPlatformContext();
}

createAndSetPlatformContext() [2/2]

void QEglFSScreen::createAndSetPlatformContext ( )

private

Definition at line 137 of file qeglfsscreen.cpp.

{
    QPlatformWindowFormat platformFormat = QPlatformWindowFormat::defaultFormat();

    platformFormat.setWindowApi(QPlatformWindowFormat::OpenGL);

    QByteArray depthString = qgetenv("QT_QPA_EGLFS_DEPTH");
    if (depthString.toInt() == 16) {
        platformFormat.setDepth(16);
        platformFormat.setRedBufferSize(5);
        platformFormat.setGreenBufferSize(6);
        platformFormat.setBlueBufferSize(5);
        m_depth = 16;
        m_format = QImage::Format_RGB16;
    } else {
        platformFormat.setDepth(32);
        platformFormat.setRedBufferSize(8);
        platformFormat.setGreenBufferSize(8);
        platformFormat.setBlueBufferSize(8);
        m_depth = 32;
        m_format = QImage::Format_RGB32;
    }
    if (!qgetenv("QT_QPA_EGLFS_MULTISAMPLE").isEmpty()) {
        platformFormat.setSampleBuffers(true);
    }


    EGLConfig config = q_configFromQPlatformWindowFormat(m_dpy, platformFormat);

    EGLNativeWindowType eglWindow = 0;
#ifdef Q_OPENKODE
    if (kdInitializeNV() == KD_ENOTINITIALIZED) {
        qFatal("Did not manage to initialize openkode");
    }
    KDWindow *window = kdCreateWindow(m_dpy,config,0);

    kdRealizeWindow(window,&eglWindow);
#endif

    m_surface = eglCreateWindowSurface(m_dpy, config, eglWindow, NULL);
    if (m_surface == EGL_NO_SURFACE) {
        qWarning("Could not create the egl surface: error = 0x%x\n", eglGetError());
        eglTerminate(m_dpy);
        qFatal("EGL error");
    }
    //    qWarning("Created surface %dx%d\n", w, h);

#ifdef QEGL_EXTRA_DEBUG
    qWarning("Configuration %d matches requirements\n", (int)config);

    for (index = 0; attrs[index].attr != -1; ++index) {
        EGLint value;
        if (eglGetConfigAttrib(m_dpy, config, attrs[index].attr, &value)) {
            qWarning("\t%s: %d\n", attrs[index].name, (int)value);
        }
    }
    qWarning("\n");
#endif

    EGLint temp;
    EGLint attribList[32];

    temp = 0;

    attribList[temp++] = EGL_CONTEXT_CLIENT_VERSION;
    attribList[temp++] = 2; // GLES version 2
    attribList[temp++] = EGL_NONE;

    QEGLPlatformContext *platformContext = new QEGLPlatformContext(m_dpy,config,attribList,m_surface,EGL_OPENGL_ES_API);
    m_platformContext = platformContext;

    EGLint w,h;                    // screen size detection
    eglQuerySurface(m_dpy, m_surface, EGL_WIDTH, &w);
    eglQuerySurface(m_dpy, m_surface, EGL_HEIGHT, &h);

    m_geometry = QRect(0,0,w,h);

}

depth()

int QEglFSScreen::depth ( ) const

virtual

Reimplement in subclass to return current depth of the screen.

Implements QPlatformScreen.

Definition at line 224 of file qeglfsscreen.cpp.

Referenced by ~QEglFSScreen().

{
    return m_depth;
}

format()

QImage::Format QEglFSScreen::format ( ) const

virtual

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

Implements QPlatformScreen.

Definition at line 229 of file qeglfsscreen.cpp.

Referenced by ~QEglFSScreen().

{
    if (m_format == QImage::Format_Invalid)
        createAndSetPlatformContext();
    return m_format;
}

geometry()

QRect QEglFSScreen::geometry ( ) const

virtual

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

Implements QPlatformScreen.

Definition at line 216 of file qeglfsscreen.cpp.

Referenced by QEglFSPaintDevice::size(), and ~QEglFSScreen().

{
    if (m_geometry.isNull()) {
        createAndSetPlatformContext();
    }
    return m_geometry;
}

platformContext()

QPlatformGLContext * QEglFSScreen::platformContext

(

)

const

Definition at line 235 of file qeglfsscreen.cpp.

Referenced by QEglFSPaintDevice::context(), createAndSetPlatformContext(), QEglFSWindow::glContext(), and ~QEglFSScreen().

{
    if (!m_platformContext) {
        QEglFSScreen *that = const_cast<QEglFSScreen *>(this);
        that->createAndSetPlatformContext();
    }
    return m_platformContext;
}

Properties

m_depth

int QEglFSScreen::m_depth

private

Definition at line 72 of file qeglfsscreen.h.

Referenced by createAndSetPlatformContext(), and depth().

m_dpy

EGLDisplay QEglFSScreen::m_dpy

private

Definition at line 75 of file qeglfsscreen.h.

Referenced by createAndSetPlatformContext(), and QEglFSScreen().

m_format

QImage::Format QEglFSScreen::m_format

private

Definition at line 73 of file qeglfsscreen.h.

Referenced by createAndSetPlatformContext(), and format().

m_geometry

QRect QEglFSScreen::m_geometry

private

Definition at line 71 of file qeglfsscreen.h.

Referenced by createAndSetPlatformContext(), and geometry().

m_platformContext

QPlatformGLContext* QEglFSScreen::m_platformContext

private

Definition at line 74 of file qeglfsscreen.h.

Referenced by createAndSetPlatformContext(), and platformContext().

m_surface

EGLSurface QEglFSScreen::m_surface

private

Definition at line 76 of file qeglfsscreen.h.

Referenced by createAndSetPlatformContext().

---

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

• /src/plugins/platforms/eglfs/qeglfsscreen.h
• /src/plugins/platforms/eglfs/qeglfsscreen.cpp