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    41 

    42 #ifndef QPIXMAPDATA_GL_P_H

    43 #define QPIXMAPDATA_GL_P_H

    44 

    45 //

    46 //  W A R N I N G

    47 //  -------------

    48 //

    49 // This file is not part of the Qt API.  It exists purely as an

    50 // implementation detail.  This header file may change from version to

    51 // version without notice, or even be removed.

    52 //

    53 // We mean it.

    54 //

    55 

    56 #include "qgl_p.h"

    57 #include "qgl.h"

    58 

    59 #include "private/qpixmapdata_p.h"

    60 #include "private/qglpaintdevice_p.h"

    61 

    62 QT_BEGIN_NAMESPACE

    63 

    64 class QPaintEngine;

    65 class QGLFramebufferObject;

    66 class QGLFramebufferObjectFormat;

    67 class QGLPixmapData;

    68 

    69 class QGLFramebufferObjectPool

    70 {

    71 public:

    72     QGLFramebufferObject *acquire(const QSize &size, const QGLFramebufferObjectFormat &format);

    73     void release(QGLFramebufferObject *fbo);

    74 

    75 private:

    76     QList<QGLFramebufferObject *> m_fbos;

    77 };

    78 

    79 QGLFramebufferObjectPool* qgl_fbo_pool();

    80 

    81 

    82 class QGLPixmapGLPaintDevice : public QGLPaintDevice

    83 {

    84 public:

    85     QPaintEngine* paintEngine() const;

    86 

    87     void beginPaint();

    88     void endPaint();

    89     QGLContext* context() const;

    90     QSize size() const;

    91 

    92     void setPixmapData(QGLPixmapData*);

    93 private:

    94     QGLPixmapData *data;

    95 };

    96 

    97 

    98 class QGLPixmapData : public QPixmapData

    99 {

   100 public:

   101     QGLPixmapData(PixelType type);

   102     ~QGLPixmapData();

   103 

   104     QPixmapData *createCompatiblePixmapData() const;

   105 

   106     // Re-implemented from QPixmapData:

   107     void resize(int width, int height);

   108     void fromImage(const QImage &image, Qt::ImageConversionFlags flags);

   109     void copy(const QPixmapData *data, const QRect &rect);

   110     bool scroll(int dx, int dy, const QRect &rect);

   111     void fill(const QColor &color);

   112     bool hasAlphaChannel() const;

   113     QImage toImage() const;

   114     QPaintEngine *paintEngine() const;

   115     int metric(QPaintDevice::PaintDeviceMetric metric) const;

   116 

   117     // For accessing as a target:

   118     QGLPaintDevice *glDevice() const;

   119 

   120     // For accessing as a source:

   121     bool isValidContext(const QGLContext *ctx) const;

   122     GLuint bind(bool copyBack = true) const;

   123     QGLTexture *texture() const;

   124 

   125 private:

   126     bool isValid() const;

   127 

   128     void ensureCreated() const;

   129 

   130     bool isUninitialized() const { return m_dirty && m_source.isNull(); }

   131 

   132     bool needsFill() const { return m_hasFillColor; }

   133     QColor fillColor() const { return m_fillColor; }

   134 

   135 

   136 

   137     QGLPixmapData(const QGLPixmapData &other);

   138     QGLPixmapData &operator=(const QGLPixmapData &other);

   139 

   140     void copyBackFromRenderFbo(bool keepCurrentFboBound) const;

   141     QSize size() const { return QSize(w, h); }

   142 

   143     static bool useFramebufferObjects();

   144 

   145     QImage fillImage(const QColor &color) const;

   146 

   147     mutable QGLFramebufferObject *m_renderFbo;

   148     mutable QPaintEngine *m_engine;

   149     mutable QGLContext *m_ctx;

   150     mutable QImage m_source;

   151     mutable QGLTexture m_texture;

   152 

   153     // the texture is not in sync with the source image

   154     mutable bool m_dirty;

   155 

   156     // fill has been called and no painting has been done, so the pixmap is

   157     // represented by a single fill color

   158     mutable QColor m_fillColor;

   159     mutable bool m_hasFillColor;

   160 

   161     mutable bool m_hasAlpha;

   162 

   163     mutable QGLPixmapGLPaintDevice m_glDevice;

   164 

   165     friend class QGLPixmapGLPaintDevice;

   166 };

   167 

   168 QT_END_NAMESPACE

   169 

   170 #endif // QPIXMAPDATA_GL_P_H

   171 

   172