1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtGui module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QPLATFORMSHAREDGRAPHICSCACHE_H 41 #define QPLATFORMSHAREDGRAPHICSCACHE_H 42 43 // 44 // W A R N I N G 45 // ------------- 46 // 47 // This file is part of the QPA API and is not meant to be used 48 // in applications. Usage of this API may make your code 49 // source and binary incompatible with future versions of Qt. 50 // 51 52 #include <QtGui/qtguiglobal.h> 53 #include <QtCore/qobject.h> 54 #include <QtGui/qimage.h> 55 56 QT_BEGIN_NAMESPACE 57 58 class Q_GUI_EXPORT QPlatformSharedGraphicsCache: public QObject 59 { 60 Q_OBJECT 61 public: 62 enum PixelFormat 63 { 64 Alpha8 65 }; 66 67 enum BufferType 68 { 69 OpenGLTexture 70 }; 71 QObject(parent)72 explicit QPlatformSharedGraphicsCache(QObject *parent = nullptr) : QObject(parent) {} 73 74 virtual void beginRequestBatch() = 0; 75 virtual void ensureCacheInitialized(const QByteArray &cacheId, BufferType bufferType, 76 PixelFormat pixelFormat) = 0; 77 virtual void requestItems(const QByteArray &cacheId, const QVector<quint32> &itemIds) = 0; 78 virtual void insertItems(const QByteArray &cacheId, 79 const QVector<quint32> &itemIds, 80 const QVector<QImage> &items) = 0; 81 virtual void releaseItems(const QByteArray &cacheId, const QVector<quint32> &itemIds) = 0; 82 virtual void endRequestBatch() = 0; 83 84 virtual bool requestBatchStarted() const = 0; 85 86 virtual uint textureIdForBuffer(void *bufferId) = 0; 87 virtual void referenceBuffer(void *bufferId) = 0; 88 virtual bool dereferenceBuffer(void *bufferId) = 0; 89 virtual QSize sizeOfBuffer(void *bufferId) = 0; 90 virtual void *eglImageForBuffer(void *bufferId) = 0; 91 92 Q_SIGNALS: 93 void itemsMissing(const QByteArray &cacheId, const QVector<quint32> &itemIds); 94 void itemsAvailable(const QByteArray &cacheId, void *bufferId, 95 const QVector<quint32> &itemIds, const QVector<QPoint> &positionsInBuffer); 96 void itemsInvalidated(const QByteArray &cacheId, const QVector<quint32> &itemIds); 97 void itemsUpdated(const QByteArray &cacheId, void *bufferId, 98 const QVector<quint32> &itemIds, const QVector<QPoint> &positionsInBuffer); 99 }; 100 101 QT_END_NAMESPACE 102 103 #endif // QPLATFORMSHAREDGRAPHICSCACHE_H 104