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Diffstat (limited to 'src/gui/kernel/qplatformgraphicsbuffer.h')
-rw-r--r-- | src/gui/kernel/qplatformgraphicsbuffer.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/gui/kernel/qplatformgraphicsbuffer.h b/src/gui/kernel/qplatformgraphicsbuffer.h new file mode 100644 index 0000000000..62e06bceeb --- /dev/null +++ b/src/gui/kernel/qplatformgraphicsbuffer.h @@ -0,0 +1,117 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the QtGui 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 QPLATFORMGRAPHICSBUFFER_H +#define QPLATFORMGRAPHICSBUFFER_H + +// +// W A R N I N G +// ------------- +// +// This file is part of the QPA API and is not meant to be used +// in applications. Usage of this API may make your code +// source and binary incompatible with future versions of Qt. +// + + +#include <QtCore/QSize> +#include <QtCore/QRect> +#include <QtGui/QPixelFormat> +#include <QtCore/qflags.h> +#include <QtCore/QObject> + +QT_BEGIN_NAMESPACE + +class Q_GUI_EXPORT QPlatformGraphicsBuffer : public QObject +{ +Q_OBJECT +public: + enum AccessType + { + None = 0x00, + SWReadAccess = 0x01, + SWWriteAccess = 0x02, + TextureAccess = 0x04, + HWCompositor = 0x08 + }; + Q_DECLARE_FLAGS(AccessTypes, AccessType); + + enum Origin { + OriginBottomLeft, + OriginTopLeft + }; + + virtual ~QPlatformGraphicsBuffer(); + + AccessTypes isLocked() const { return m_lock_access; } + bool lock(AccessTypes access, const QRect &rect = QRect()); + void unlock(); + + virtual bool bindToTexture(const QRect &rect = QRect()) const; + + virtual const uchar *data() const; + virtual uchar *data(); + virtual int bytesPerLine() const; + int byteCount() const; + + virtual Origin origin() const; + + QSize size() const { return m_size; } + QPixelFormat format() const { return m_format; } + +Q_SIGNALS: + void unlocked(AccessTypes previousAccessTypes); + +protected: + QPlatformGraphicsBuffer(const QSize &size, const QPixelFormat &format); + + virtual bool doLock(AccessTypes access, const QRect &rect = QRect()) = 0; + virtual void doUnlock() = 0; + +private: + QSize m_size; + QPixelFormat m_format; + AccessTypes m_lock_access; +}; + +QT_END_NAMESPACE + +#endif //QPLATFORMGRAPHICSBUFFER_H |