QGLPixmapGLPaintDevice Class Reference

#include <qpixmapdata_gl_p.h>

Inheritance diagram for QGLPixmapGLPaintDevice:

Public Functions
bool	alphaRequested () const
void	beginPaint ()
QGLContext *	context () const
void	endPaint ()
QPaintEngine *	paintEngine () const
void	setPixmapData (QGLPixmapData *)
QSize	size () const
Public Functions inherited from QGLPaintDevice
int	devType () const
virtual void	ensureActiveTarget ()
virtual QGLFormat	format () const
virtual bool	isFlipped () const
	QGLPaintDevice ()
virtual	~QGLPaintDevice ()
Public Functions inherited from QPaintDevice
int	colorCount () const
int	depth () const
virtual HDC	getDC () const
int	height () const
int	heightMM () const
int	logicalDpiX () const
int	logicalDpiY () const
QT_DEPRECATED int	numColors () const
bool	paintingActive () const
int	physicalDpiX () const
int	physicalDpiY () const
virtual void	releaseDC (HDC hdc) const
int	width () const
int	widthMM () const
virtual	~QPaintDevice ()

Properties
QGLPixmapData *	data

Additional Inherited Members
Public Types inherited from QPaintDevice
enum	PaintDeviceMetric {   PdmWidth = 1, PdmHeight, PdmWidthMM, PdmHeightMM,   PdmNumColors, PdmDepth, PdmDpiX, PdmDpiY,   PdmPhysicalDpiX, PdmPhysicalDpiY }
Static Public Functions inherited from QGLPaintDevice
static QGLPaintDevice *	getDevice (QPaintDevice *)
Static Public Functions inherited from QPaintDevice
static QWSDisplay *	qwsDisplay ()
Protected Functions inherited from QGLPaintDevice
int	metric (QPaintDevice::PaintDeviceMetric metric) const
Protected Functions inherited from QPaintDevice
	QPaintDevice ()
Protected Variables inherited from QGLPaintDevice
GLuint	m_previousFBO
GLuint	m_thisFBO
Protected Variables inherited from QPaintDevice
ushort	painters
Related Functions inherited from QPaintDevice
const Q_GUI_EXPORT QX11Info *	qt_x11Info (const QPaintDevice *pd)
	Returns the QX11Info structure for the pd paint device. More...

Detailed Description

Definition at line 92 of file qpixmapdata_gl_p.h.

Functions

alphaRequested()

bool QGLPixmapGLPaintDevice::alphaRequested ( ) const

virtual

Reimplemented from QGLPaintDevice.

Definition at line 242 of file qpixmapdata_gl.cpp.

{
    return data->m_hasAlpha;
}

beginPaint()

void QGLPixmapGLPaintDevice::beginPaint ( )

virtual

Reimplemented from QGLPaintDevice.

Definition at line 172 of file qpixmapdata_gl.cpp.

{
    if (!data->isValid())
        return;

    // QGLPaintDevice::beginPaint will store the current binding and replace
    // it with m_thisFBO:
    m_thisFBO = data->m_renderFbo->handle();
    QGLPaintDevice::beginPaint();

    Q_ASSERT(data->paintEngine()->type() == QPaintEngine::OpenGL2);

    // QPixmap::fill() is deferred until now, where we actually need to do the fill:
    if (data->needsFill()) {
        const QColor &c = data->fillColor();
        float alpha = c.alphaF();
        glDisable(GL_SCISSOR_TEST);
        glClearColor(c.redF() * alpha, c.greenF() * alpha, c.blueF() * alpha, alpha);
        glClear(GL_COLOR_BUFFER_BIT);
    }
    else if (!data->isUninitialized()) {
        // If the pixmap (GL Texture) has valid content (it has been
        // uploaded from an image or rendered into before), we need to
        // copy it from the texture to the render FBO.

        glDisable(GL_DEPTH_TEST);
        glDisable(GL_SCISSOR_TEST);
        glDisable(GL_BLEND);

#if !defined(QT_OPENGL_ES_2)
        glMatrixMode(GL_MODELVIEW);
        glLoadIdentity();

        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
        glOrtho(0, data->width(), data->height(), 0, -999999, 999999);
#endif

        glViewport(0, 0, data->width(), data->height());

        // Pass false to bind so it doesn't copy the FBO into the texture!
        context()->drawTexture(QRect(0, 0, data->width(), data->height()), data->bind(false));
    }
}

context()

QGLContext * QGLPixmapGLPaintDevice::context ( ) const

virtual

Implements QGLPaintDevice.

Definition at line 231 of file qpixmapdata_gl.cpp.

{
    data->ensureCreated();
    return data->m_ctx;
}

endPaint()

void QGLPixmapGLPaintDevice::endPaint ( )

virtual

Reimplemented from QGLPaintDevice.

Definition at line 217 of file qpixmapdata_gl.cpp.

{
    if (!data->isValid())
        return;

    data->copyBackFromRenderFbo(false);

    // Base's endPaint will restore the previous FBO binding
    QGLPaintDevice::endPaint();

    qgl_fbo_pool()->release(data->m_renderFbo);
    data->m_renderFbo = 0;
}

paintEngine()

QPaintEngine * QGLPixmapGLPaintDevice::paintEngine ( ) const

virtual

Implements QPaintDevice.

Definition at line 167 of file qpixmapdata_gl.cpp.

{
    return data->paintEngine();
}

setPixmapData()

void QGLPixmapGLPaintDevice::setPixmapData

(

QGLPixmapData *

d

)

Definition at line 247 of file qpixmapdata_gl.cpp.

Referenced by QGLPixmapData::QGLPixmapData().

{
    data = d;
}

size()

QSize QGLPixmapGLPaintDevice::size ( ) const

virtual

Implements QGLPaintDevice.

Definition at line 237 of file qpixmapdata_gl.cpp.

{
    return data->size();
}

Properties

data

QGLPixmapData* QGLPixmapGLPaintDevice::data

private

Definition at line 105 of file qpixmapdata_gl_p.h.

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

• /src/opengl/qpixmapdata_gl_p.h
• /src/opengl/qpixmapdata_gl.cpp