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#ifndef QTEXTUREGLYPHCACHE_GL_P_H | |
#define QTEXTUREGLYPHCACHE_GL_P_H | |
// | |
// W A R N I N G | |
// ------------- | |
// | |
// This file is not part of the Qt API. It exists for the convenience | |
// of the QLibrary class. This header file may change from | |
// version to version without notice, or even be removed. | |
// | |
// We mean it. | |
// | |
#include <private/qtextureglyphcache_p.h> | |
#include <private/qgl_p.h> | |
#include <qglshaderprogram.h> | |
QT_BEGIN_NAMESPACE | |
class QGL2PaintEngineExPrivate; | |
class Q_OPENGL_EXPORT QGLTextureGlyphCache : public QObject, public QImageTextureGlyphCache | |
{ | |
Q_OBJECT | |
public: | |
QGLTextureGlyphCache(QGLContext *context, QFontEngineGlyphCache::Type type, const QTransform &matrix); | |
~QGLTextureGlyphCache(); | |
virtual void createTextureData(int width, int height); | |
virtual void resizeTextureData(int width, int height); | |
virtual void fillTexture(const Coord &c, glyph_t glyph); | |
virtual int glyphPadding() const; | |
virtual int maxTextureWidth() const; | |
virtual int maxTextureHeight() const; | |
inline GLuint texture() const { return m_texture; } | |
inline int width() const { return m_width; } | |
inline int height() const { return m_height; } | |
inline void setPaintEnginePrivate(QGL2PaintEngineExPrivate *p) { pex = p; } | |
inline int serialNumber() const { return m_serialNumber; } | |
enum FilterMode { | |
Nearest, | |
Linear | |
}; | |
FilterMode filterMode() const { return m_filterMode; } | |
void setFilterMode(FilterMode m) { m_filterMode = m; } | |
void setContext(QGLContext *context); | |
QGLContext *context() const { return ctx; } | |
public Q_SLOTS: | |
void contextDestroyed(const QGLContext *context) { | |
if (context == ctx) { | |
const QGLContext *nextCtx = qt_gl_transfer_context(ctx); | |
if (!nextCtx) { | |
// the context may not be current, so we cannot directly | |
// destroy the fbo and texture here, but since the context | |
// is about to be destroyed, the GL server will do the | |
// clean up for us anyway. We reset everything, so that the | |
// glyph cache object can be reused later by setting a new | |
// context on it. | |
m_fbo = 0; | |
m_texture = 0; | |
ctx = 0; | |
m_width = 0; | |
m_height = 0; | |
m_w = 0; | |
m_h = 0; | |
m_cx = 0; | |
m_cy = 0; | |
m_currentRowHeight = 0; | |
coords.clear(); | |
} else { | |
// since the context holding the texture is shared, and | |
// about to be destroyed, we have to transfer ownership | |
// of the texture to one of the share contexts | |
ctx = const_cast<QGLContext *>(nextCtx); | |
} | |
} | |
} | |
void clear(); | |
private: | |
QGLContext *ctx; | |
QGL2PaintEngineExPrivate *pex; | |
GLuint m_texture; | |
GLuint m_fbo; | |
int m_width; | |
int m_height; | |
QGLShaderProgram *m_program; | |
FilterMode m_filterMode; | |
int m_serialNumber; | |
}; | |
QT_END_NAMESPACE | |
#endif | |