QMinimalWindowSurface Class Reference

#include <qminimalwindowsurface.h>

Inheritance diagram for QMinimalWindowSurface:

Public Functions
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...
	QMinimalWindowSurface (QWidget *window)
void	resize (const QSize &size)
	~QMinimalWindowSurface ()
Public Functions inherited from QWindowSurface
virtual void	beginPaint (const QRegion &)
	This function is called before painting onto the surface begins, with the region in which the painting will occur. More...
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
QImage	mImage

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 51 of file qminimalwindowsurface.h.

Constructors and Destructors

QMinimalWindowSurface()

QMinimalWindowSurface::QMinimalWindowSurface

(

QWidget *

window

)

Definition at line 49 of file qminimalwindowsurface.cpp.

    : QWindowSurface(window)
{
    //qDebug() << "QMinimalWindowSurface::QMinimalWindowSurface:" << (long)this;
}

~QMinimalWindowSurface()

QMinimalWindowSurface::~QMinimalWindowSurface

(

)

Definition at line 55 of file qminimalwindowsurface.cpp.

{
}

Functions

flush()

void QMinimalWindowSurface::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 65 of file qminimalwindowsurface.cpp.

{
    Q_UNUSED(widget);
    Q_UNUSED(region);
    Q_UNUSED(offset);

    static int c = 0;
    QString filename = QString("output%1.png").arg(c++, 4, 10, QLatin1Char('0'));
    qDebug() << "QMinimalWindowSurface::flush() saving contents to" << filename.toLocal8Bit().constData();
    mImage.save(filename);
}

paintDevice()

QPaintDevice * QMinimalWindowSurface::paintDevice ( )

virtual

Implement this function to return the appropriate paint device.

Implements QWindowSurface.

Definition at line 59 of file qminimalwindowsurface.cpp.

{
    //qDebug() << "QMinimalWindowSurface::paintDevice";
    return &mImage;
}

resize()

void QMinimalWindowSurface::resize

(

const QSize &

size

)

Definition at line 77 of file qminimalwindowsurface.cpp.

{
    //qDebug() << "QMinimalWindowSurface::setGeometry:" << (long)this << rect;
    QWindowSurface::resize(size);
    QImage::Format format = QApplicationPrivate::platformIntegration()->screens().first()->format();
    if (mImage.size() != size)
        mImage = QImage(size, format);
}

Properties

mImage

QImage QMinimalWindowSurface::mImage

private

Definition at line 62 of file qminimalwindowsurface.h.

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

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

• /src/plugins/platforms/minimal/qminimalwindowsurface.h
• /src/plugins/platforms/minimal/qminimalwindowsurface.cpp