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39
40#ifndef QXCBBACKINGSTORE_H
41#define QXCBBACKINGSTORE_H
42
43#include <qpa/qplatformbackingstore.h>
44#include <QtCore/QStack>
45
46#include <xcb/xcb.h>
47
48#include "qxcbobject.h"
49
50QT_BEGIN_NAMESPACE
51
52class QXcbBackingStoreImage;
53
54class QXcbBackingStore : public QXcbObject, public QPlatformBackingStore
55{
56public:
57 QXcbBackingStore(QWindow *window);
58 ~QXcbBackingStore();
59
60 QPaintDevice *paintDevice() override;
61 void flush(QWindow *window, const QRegion &region, const QPoint &offset) override;
62#ifndef QT_NO_OPENGL
63 void composeAndFlush(QWindow *window, const QRegion &region, const QPoint &offset,
64 QPlatformTextureList *textures,
65 bool translucentBackground) override;
66#endif
67 QImage toImage() const override;
68
69 QPlatformGraphicsBuffer *graphicsBuffer() const override;
70
71 void resize(const QSize &size, const QRegion &staticContents) override;
72 bool scroll(const QRegion &area, int dx, int dy) override;
73
74 void beginPaint(const QRegion &) override;
75 void endPaint() override;
76
77 static bool createSystemVShmSegment(xcb_connection_t *c, size_t segmentSize = 1,
78 void *shmInfo = nullptr);
79
80protected:
81 virtual void render(xcb_window_t window, const QRegion &region, const QPoint &offset);
82 virtual void recreateImage(QXcbWindow *win, const QSize &size);
83
84 QXcbBackingStoreImage *m_image = nullptr;
85 QStack<QRegion> m_paintRegions;
86 QImage m_rgbImage;
87};
88
89class QXcbSystemTrayBackingStore : public QXcbBackingStore
90{
91public:
92 QXcbSystemTrayBackingStore(QWindow *window);
93 ~QXcbSystemTrayBackingStore();
94
95 void beginPaint(const QRegion &) override;
96
97protected:
98 void render(xcb_window_t window, const QRegion &region, const QPoint &offset) override;
99 void recreateImage(QXcbWindow *win, const QSize &size) override;
100
101private:
102 void initXRenderMode();
103
104 xcb_pixmap_t m_xrenderPixmap = XCB_NONE;
105 xcb_render_picture_t m_xrenderPicture = XCB_NONE;
106 xcb_render_pictformat_t m_xrenderPictFormat = XCB_NONE;
107 xcb_render_picture_t m_windowPicture = XCB_NONE;
108
109 bool m_usingXRenderMode = false;
110 bool m_useGrabbedBackgound = false;
111 QPixmap m_grabbedBackground;
112};
113
114QT_END_NAMESPACE
115
116#endif
117

source code of qtbase/src/plugins/platforms/xcb/qxcbbackingstore.h