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| ** |
| ** Copyright (C) 2015 The Qt Company Ltd. |
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| ** |
| ** This file is part of the QtGui module of the Qt Toolkit. |
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| ****************************************************************************/ |
| |
| #ifndef QPLATFORMBACKINGSTORE_H |
| #define QPLATFORMBACKINGSTORE_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/qrect.h> |
| #include <QtCore/qobject.h> |
| |
| #include <QtGui/qwindow.h> |
| #include <QtGui/qregion.h> |
| #include <QtGui/qopengl.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| |
| class QRegion; |
| class QRect; |
| class QPoint; |
| class QImage; |
| class QPlatformBackingStorePrivate; |
| class QPlatformWindow; |
| class QPlatformTextureList; |
| class QPlatformTextureListPrivate; |
| class QOpenGLContext; |
| class QPlatformGraphicsBuffer; |
| |
| #ifndef QT_NO_OPENGL |
| class Q_GUI_EXPORT QPlatformTextureList : public QObject |
| { |
| Q_OBJECT |
| Q_DECLARE_PRIVATE(QPlatformTextureList) |
| public: |
| enum Flag { |
| StacksOnTop = 0x01 |
| }; |
| Q_DECLARE_FLAGS(Flags, Flag) |
| |
| explicit QPlatformTextureList(QObject *parent = 0); |
| ~QPlatformTextureList(); |
| |
| int count() const; |
| bool isEmpty() const { return count() == 0; } |
| GLuint textureId(int index) const; |
| QRect geometry(int index) const; |
| QRect clipRect(int index) const; |
| void *source(int index); |
| Flags flags(int index) const; |
| void lock(bool on); |
| bool isLocked() const; |
| |
| void appendTexture(void *source, GLuint textureId, const QRect &geometry, |
| const QRect &clipRect = QRect(), Flags flags = 0); |
| void clear(); |
| |
| Q_SIGNALS: |
| void locked(bool); |
| }; |
| Q_DECLARE_OPERATORS_FOR_FLAGS(QPlatformTextureList::Flags) |
| #endif |
| |
| class Q_GUI_EXPORT QPlatformBackingStore |
| { |
| public: |
| explicit QPlatformBackingStore(QWindow *window); |
| virtual ~QPlatformBackingStore(); |
| |
| QWindow *window() const; |
| |
| virtual QPaintDevice *paintDevice() = 0; |
| |
| // 'window' can be a child window, in which case 'region' is in child window coordinates and |
| // offset is the (child) window's offset in relation to the window surface. |
| virtual void flush(QWindow *window, const QRegion ®ion, const QPoint &offset) = 0; |
| #ifndef QT_NO_OPENGL |
| virtual void composeAndFlush(QWindow *window, const QRegion ®ion, const QPoint &offset, |
| QPlatformTextureList *textures, QOpenGLContext *context, |
| bool translucentBackground); |
| virtual QImage toImage() const; |
| enum TextureFlag { |
| TextureSwizzle = 0x01, |
| TextureFlip = 0x02 |
| }; |
| Q_DECLARE_FLAGS(TextureFlags, TextureFlag) |
| virtual GLuint toTexture(const QRegion &dirtyRegion, QSize *textureSize, TextureFlags *flags) const; |
| #endif |
| |
| virtual QPlatformGraphicsBuffer *graphicsBuffer() const; |
| |
| virtual void resize(const QSize &size, const QRegion &staticContents) = 0; |
| |
| virtual bool scroll(const QRegion &area, int dx, int dy); |
| |
| virtual void beginPaint(const QRegion &); |
| virtual void endPaint(); |
| |
| private: |
| QPlatformBackingStorePrivate *d_ptr; |
| }; |
| |
| #ifndef QT_NO_OPENGL |
| Q_DECLARE_OPERATORS_FOR_FLAGS(QPlatformBackingStore::TextureFlags) |
| #endif |
| |
| QT_END_NAMESPACE |
| |
| #endif // QPLATFORMBACKINGSTORE_H |