QWaylandShmWindowSurface Class Reference

#include <qwaylandshmsurface.h>

Inheritance diagram for QWaylandShmWindowSurface:

Public Functions
void	beginPaint (const QRegion &)
	This function is called before painting onto the surface begins, with the region in which the painting will occur. More...
void	flush (QWidget *widget, const QRegion &region, const QPoint &offset)
	Flushes the given region from the specified widget onto the screen. More...
QPaintDevice *	paintDevice ()
	Implement this function to return the appropriate paint device. More...
	QWaylandShmWindowSurface (QWidget *window)
void	resize (const QSize &size)
	~QWaylandShmWindowSurface ()
Public Functions inherited from QWindowSurface
virtual QImage *	buffer (const QWidget *widget)
	Returns a QImage pointer which represents the actual buffer the widget is drawn into or 0 if this is unavailable. More...
virtual void	endPaint (const QRegion &)
	This function is called after painting onto the surface has ended, with the region in which the painting was performed. More...
virtual WindowSurfaceFeatures	features () const
QRect	geometry () const
	Returns the currently allocated area on the screen. More...
virtual QPixmap	grabWidget (const QWidget *widget, const QRect &rectangle=QRect()) const
	Returns a QPixmap generated from the part of the backing store corresponding to widget. More...
bool	hasFeature (WindowSurfaceFeature feature) const
virtual QPoint	offset (const QWidget *widget) const
	Returns the offset of widget in the coordinates of this window surface. More...
	QWindowSurface (QWidget *window, bool setDefaultSurface=true)
	Constructs an empty surface for the given top-level window. More...
QRect	rect (const QWidget *widget) const
	Returns the rectangle for widget in the coordinates of this window surface. More...
virtual bool	scroll (const QRegion &area, int dx, int dy)
	Scrolls the given area dx pixels to the right and dy downward; both dx and dy may be negative. More...
virtual void	setGeometry (const QRect &rect)
	Sets the currently allocated area to be the given rect. More...
void	setStaticContents (const QRegion &region)
QRegion	staticContents () const
QWidget *	window () const
	Returns a pointer to the top-level window associated with this surface. More...
virtual	~QWindowSurface ()
	Destroys this surface. More...

Properties
QWaylandShmBuffer *	mBuffer
QWaylandDisplay *	mDisplay

Additional Inherited Members
Public Types inherited from QWindowSurface
enum	WindowSurfaceFeature { PartialUpdates = 0x00000001, PreservedContents = 0x00000002, StaticContents = 0x00000004, AllFeatures = 0xffffffff }
Protected Functions inherited from QWindowSurface
bool	hasStaticContents () const

Detailed Description

Definition at line 65 of file qwaylandshmsurface.h.

Constructors and Destructors

QWaylandShmWindowSurface()

QWaylandShmWindowSurface::QWaylandShmWindowSurface

(

QWidget *

window

)

Definition at line 94 of file qwaylandshmsurface.cpp.

    : QWindowSurface(window)
    , mBuffer(0)
    , mDisplay(QWaylandScreen::waylandScreenFromWidget(window)->display())
{
}

~QWaylandShmWindowSurface()

QWaylandShmWindowSurface::~QWaylandShmWindowSurface

(

)

Definition at line 101 of file qwaylandshmsurface.cpp.

{
}

Functions

beginPaint()

void QWaylandShmWindowSurface::beginPaint ( const QRegion &  region )

virtual

This function is called before painting onto the surface begins, with the region in which the painting will occur.

See also

endPaint(), paintDevice()

Reimplemented from QWindowSurface.

Definition at line 110 of file qwaylandshmsurface.cpp.

{
    QWaylandShmWindow *waylandWindow = static_cast<QWaylandShmWindow *>(window()->platformWindow());
    Q_ASSERT(waylandWindow->windowType() == QWaylandWindow::Shm);
    waylandWindow->waitForFrameSync();
}

flush()

void QWaylandShmWindowSurface::flush ( QWidget *  widget, const QRegion &  region, const QPoint &  offset  )

virtual

Flushes the given region from the specified widget onto the screen.

Note that the offset parameter is currently unused.

Implements QWindowSurface.

Definition at line 117 of file qwaylandshmsurface.cpp.

{
    Q_UNUSED(widget);
    Q_UNUSED(offset);
    QWaylandShmWindow *waylandWindow = static_cast<QWaylandShmWindow *>(window()->platformWindow());
    Q_ASSERT(waylandWindow->windowType() == QWaylandWindow::Shm);
    QVector<QRect> rects = region.rects();
    for (int i = 0; i < rects.size(); i++) {
        const QRect rect = rects.at(i);
        wl_buffer_damage(mBuffer->buffer(),rect.x(),rect.y(),rect.width(),rect.height());
        waylandWindow->damage(rect);
    }
}

paintDevice()

QPaintDevice * QWaylandShmWindowSurface::paintDevice ( )

virtual

Implement this function to return the appropriate paint device.

Implements QWindowSurface.

Definition at line 105 of file qwaylandshmsurface.cpp.

{
    return mBuffer->image();
}

resize()

void QWaylandShmWindowSurface::resize

(

const QSize &

size

)

Definition at line 131 of file qwaylandshmsurface.cpp.

{
    QWaylandShmWindow *waylandWindow = static_cast<QWaylandShmWindow *>(window()->platformWindow());
    Q_ASSERT(waylandWindow->windowType() == QWaylandWindow::Shm);

    QWindowSurface::resize(size);
    QImage::Format format = QPlatformScreen::platformScreenForWidget(window())->format();

    if (mBuffer != NULL && mBuffer->size() == size)
    return;

    if (mBuffer != NULL)
    delete mBuffer;

    mBuffer = new QWaylandShmBuffer(mDisplay, size, format);

    waylandWindow->attach(mBuffer);
}

Properties

mBuffer

QWaylandShmBuffer* QWaylandShmWindowSurface::mBuffer

private

Definition at line 77 of file qwaylandshmsurface.h.

Referenced by flush(), paintDevice(), and resize().

mDisplay

QWaylandDisplay* QWaylandShmWindowSurface::mDisplay

private

Definition at line 78 of file qwaylandshmsurface.h.

Referenced by resize().

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

• /src/plugins/platforms/wayland/qwaylandshmsurface.h
• /src/plugins/platforms/wayland/qwaylandshmsurface.cpp