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41 | |
42 | #ifndef QWINDOWSURFACE_P_H |
43 | #define QWINDOWSURFACE_P_H |
44 | |
45 | // |
46 | // W A R N I N G |
47 | // ------------- |
48 | // |
49 | // This file is not part of the Qt API. It exists for the convenience |
50 | // of other Qt classes. This header file may change from version to |
51 | // version without notice, or even be removed. |
52 | // |
53 | // We mean it. |
54 | // |
55 | |
56 | #include <QtGui/qwidget.h> |
57 | |
58 | QT_BEGIN_NAMESPACE |
59 | |
60 | class QPaintDevice; |
61 | class QRegion; |
62 | class QRect; |
63 | class QPoint; |
64 | class QImage; |
65 | class QWindowSurfacePrivate; |
66 | class QPlatformWindow; |
67 | |
68 | class Q_GUI_EXPORT QWindowSurface |
69 | { |
70 | public: |
71 | enum WindowSurfaceFeature { |
72 | PartialUpdates = 0x00000001, // Supports doing partial updates. |
73 | PreservedContents = 0x00000002, // Supports doing flush without first doing a repaint. |
74 | StaticContents = 0x00000004, // Supports having static content regions when being resized. |
75 | AllFeatures = 0xffffffff // For convenience |
76 | }; |
77 | Q_DECLARE_FLAGS(WindowSurfaceFeatures, WindowSurfaceFeature) |
78 | |
79 | QWindowSurface(QWidget *window, bool setDefaultSurface = true); |
80 | virtual ~QWindowSurface(); |
81 | |
82 | QWidget *window() const; |
83 | |
84 | virtual QPaintDevice *paintDevice() = 0; |
85 | |
86 | // 'widget' can be a child widget, in which case 'region' is in child widget coordinates and |
87 | // offset is the (child) widget's offset in relation to the window surface. On QWS, 'offset' |
88 | // can be larger than just the offset from the top-level widget as there may also be window |
89 | // decorations which are painted into the window surface. |
90 | virtual void flush(QWidget *widget, const QRegion ®ion, const QPoint &offset) = 0; |
91 | #if !defined(Q_WS_QPA) |
92 | virtual void setGeometry(const QRect &rect); |
93 | QRect geometry() const; |
94 | #else |
95 | virtual void resize(const QSize &size); |
96 | QSize size() const; |
97 | inline QRect geometry() const { return QRect(QPoint(), size()); } //### cleanup before Qt 5 |
98 | #endif |
99 | |
100 | virtual bool scroll(const QRegion &area, int dx, int dy); |
101 | |
102 | virtual void beginPaint(const QRegion &); |
103 | virtual void endPaint(const QRegion &); |
104 | |
105 | virtual QImage* buffer(const QWidget *widget); |
106 | virtual QPixmap grabWidget(const QWidget *widget, const QRect& rectangle = QRect()) const; |
107 | |
108 | virtual QPoint offset(const QWidget *widget) const; |
109 | inline QRect rect(const QWidget *widget) const; |
110 | |
111 | bool hasFeature(WindowSurfaceFeature feature) const; |
112 | virtual WindowSurfaceFeatures features() const; |
113 | |
114 | void setStaticContents(const QRegion ®ion); |
115 | QRegion staticContents() const; |
116 | |
117 | protected: |
118 | bool hasStaticContents() const; |
119 | |
120 | private: |
121 | QWindowSurfacePrivate *d_ptr; |
122 | }; |
123 | |
124 | Q_DECLARE_OPERATORS_FOR_FLAGS(QWindowSurface::WindowSurfaceFeatures) |
125 | |
126 | inline QRect QWindowSurface::rect(const QWidget *widget) const |
127 | { |
128 | return widget->rect().translated(offset(widget)); |
129 | } |
130 | |
131 | inline bool QWindowSurface::hasFeature(WindowSurfaceFeature feature) const |
132 | { |
133 | return (features() & feature) != 0; |
134 | } |
135 | |
136 | QT_END_NAMESPACE |
137 | |
138 | #endif // QWINDOWSURFACE_P_H |
139 | |