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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtOpenGL module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QPIXMAPDATA_GL_P_H
#define QPIXMAPDATA_GL_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 "qgl_p.h"
#include "qgl.h"
#include "private/qpixmapdata_p.h"
#include "private/qglpaintdevice_p.h"
QT_BEGIN_NAMESPACE
class QPaintEngine;
class QGLFramebufferObject;
class QGLFramebufferObjectFormat;
class QGLPixmapData;
class QGLFramebufferObjectPool
{
public:
QGLFramebufferObject *acquire(const QSize &size, const QGLFramebufferObjectFormat &format, bool strictSize = false);
void release(QGLFramebufferObject *fbo);
private:
QList<QGLFramebufferObject *> m_fbos;
};
QGLFramebufferObjectPool* qgl_fbo_pool();
class QGLPixmapGLPaintDevice : public QGLPaintDevice
{
public:
QPaintEngine* paintEngine() const;
void beginPaint();
void endPaint();
QGLContext* context() const;
QSize size() const;
bool alphaRequested() const;
void setPixmapData(QGLPixmapData*);
private:
QGLPixmapData *data;
};
class QGLPixmapData : public QPixmapData
{
public:
QGLPixmapData(PixelType type);
~QGLPixmapData();
QPixmapData *createCompatiblePixmapData() const;
// Re-implemented from QPixmapData:
void resize(int width, int height);
void fromImage(const QImage &image, Qt::ImageConversionFlags flags);
bool fromFile(const QString &filename, const char *format,
Qt::ImageConversionFlags flags);
bool fromData(const uchar *buffer, uint len, const char *format,
Qt::ImageConversionFlags flags);
void copy(const QPixmapData *data, const QRect &rect);
bool scroll(int dx, int dy, const QRect &rect);
void fill(const QColor &color);
bool hasAlphaChannel() const;
QImage toImage() const;
QPaintEngine *paintEngine() const;
int metric(QPaintDevice::PaintDeviceMetric metric) const;
// For accessing as a target:
QGLPaintDevice *glDevice() const;
// For accessing as a source:
bool isValidContext(const QGLContext *ctx) const;
GLuint bind(bool copyBack = true) const;
QGLTexture *texture() const;
private:
bool isValid() const;
void ensureCreated() const;
bool isUninitialized() const { return m_dirty && m_source.isNull(); }
bool needsFill() const { return m_hasFillColor; }
QColor fillColor() const { return m_fillColor; }
QGLPixmapData(const QGLPixmapData &other);
QGLPixmapData &operator=(const QGLPixmapData &other);
void copyBackFromRenderFbo(bool keepCurrentFboBound) const;
QSize size() const { return QSize(w, h); }
static bool useFramebufferObjects();
QImage fillImage(const QColor &color) const;
mutable QGLFramebufferObject *m_renderFbo;
mutable QPaintEngine *m_engine;
mutable QGLContext *m_ctx;
mutable QImage m_source;
mutable QGLTexture m_texture;
// the texture is not in sync with the source image
mutable bool m_dirty;
// fill has been called and no painting has been done, so the pixmap is
// represented by a single fill color
mutable QColor m_fillColor;
mutable bool m_hasFillColor;
mutable bool m_hasAlpha;
mutable QGLPixmapGLPaintDevice m_glDevice;
friend class QGLPixmapGLPaintDevice;
};
QT_END_NAMESPACE
#endif // QPIXMAPDATA_GL_P_H
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