mirror of https://github.com/qt/qtbase.git
110 lines
3.3 KiB
C++
110 lines
3.3 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL21$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QPLATFORMGRAPHICSBUFFER_H
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#define QPLATFORMGRAPHICSBUFFER_H
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//
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// W A R N I N G
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// -------------
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//
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// This file is part of the QPA API and is not meant to be used
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// in applications. Usage of this API may make your code
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// source and binary incompatible with future versions of Qt.
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//
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#include <QtCore/QSize>
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#include <QtCore/QRect>
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#include <QtGui/QPixelFormat>
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#include <QtCore/qflags.h>
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#include <QtCore/QObject>
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QT_BEGIN_NAMESPACE
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class Q_GUI_EXPORT QPlatformGraphicsBuffer : public QObject
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{
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Q_OBJECT
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public:
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enum AccessType
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{
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None = 0x00,
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SWReadAccess = 0x01,
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SWWriteAccess = 0x02,
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TextureAccess = 0x04,
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HWCompositor = 0x08
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};
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Q_DECLARE_FLAGS(AccessTypes, AccessType);
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enum Origin {
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OriginBottomLeft,
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OriginTopLeft
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};
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virtual ~QPlatformGraphicsBuffer();
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AccessTypes isLocked() const { return m_lock_access; }
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bool lock(AccessTypes access, const QRect &rect = QRect());
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void unlock();
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virtual bool bindToTexture(const QRect &rect = QRect()) const;
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virtual const uchar *data() const;
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virtual uchar *data();
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virtual int bytesPerLine() const;
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int byteCount() const;
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virtual Origin origin() const;
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QSize size() const { return m_size; }
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QPixelFormat format() const { return m_format; }
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Q_SIGNALS:
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void unlocked(AccessTypes previousAccessTypes);
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protected:
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QPlatformGraphicsBuffer(const QSize &size, const QPixelFormat &format);
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virtual bool doLock(AccessTypes access, const QRect &rect = QRect()) = 0;
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virtual void doUnlock() = 0;
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private:
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QSize m_size;
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QPixelFormat m_format;
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AccessTypes m_lock_access;
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};
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QT_END_NAMESPACE
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#endif //QPLATFORMGRAPHICSBUFFER_H
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