qglpixmapfilter_p.h

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#ifndef QGLPIXMAPFILTER_P_H
#define QGLPIXMAPFILTER_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <private/qpixmapfilter_p.h>

#include <QtOpenGL/qgl.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

class QGLPixelBuffer;

QT_MODULE(OpenGL)

class QGLPixmapFilterBase
{
public:
    virtual ~QGLPixmapFilterBase() {}
protected:
    void bindTexture(const QPixmap &src) const;
    void drawImpl(QPainter *painter, const QPointF &pos, const QPixmap &src, const QRectF &srcRect = QRectF()) const;

    virtual bool processGL(QPainter *painter, const QPointF &pos, const QPixmap &src, const QRectF &srcRect) const = 0;
};

template <typename Filter>
class QGLPixmapFilter : public Filter, public QGLPixmapFilterBase
{
public:
    void draw(QPainter *painter, const QPointF &pos, const QPixmap &src, const QRectF &srcRect = QRectF())  const {
        const QRectF source = srcRect.isNull() ? QRectF(src.rect()) : srcRect;
        if (painter)
           drawImpl(painter, pos, src, source);
    }
};

QT_END_NAMESPACE

QT_END_HEADER

#endif // QGLPIXMAPFILTER_P_H