Qt 4.8
qwindowsurface_vgegl_p.h
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41 
42 #ifndef QWINDOWSURFACE_VGEGL_P_H
43 #define QWINDOWSURFACE_VGEGL_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 the QLibrary class. This header file may change from
51 // version to version without notice, or even be removed.
52 //
53 // We mean it.
54 //
55 
56 #include <QtGui/private/qwindowsurface_p.h>
57 #include "qvg_p.h"
58 
59 #if !defined(QT_NO_EGL)
60 
61 #include <QtGui/private/qeglcontext_p.h>
62 
64 
65 class QWindowSurface;
66 
68 {
69 public:
71  virtual ~QVGEGLWindowSurfacePrivate();
72 
73  QVGPaintEngine *paintEngine();
74  virtual QEglContext *ensureContext(QWidget *widget) = 0;
75  virtual void beginPaint(QWidget *widget) = 0;
76  virtual void endPaint
77  (QWidget *widget, const QRegion& region, QImage *image = 0) = 0;
78  virtual VGImage surfaceImage() const;
79  virtual QSize surfaceSize() const = 0;
80  virtual bool supportsStaticContents() const { return false; }
81  virtual bool scroll(QWidget *, const QRegion&, int, int) { return false; }
82 
83 protected:
86 
87  void destroyPaintEngine();
88  QSize windowSurfaceSize(QWidget *widget) const;
89 };
90 
91 #if defined(EGL_OPENVG_IMAGE) && !defined(QVG_NO_SINGLE_CONTEXT)
92 
93 #define QVG_VGIMAGE_BACKBUFFERS 1
94 
95 class Q_OPENVG_EXPORT QVGEGLWindowSurfaceVGImage : public QVGEGLWindowSurfacePrivate
96 {
97 public:
98  QVGEGLWindowSurfaceVGImage(QWindowSurface *win);
99  virtual ~QVGEGLWindowSurfaceVGImage();
100 
102  void beginPaint(QWidget *widget);
103  void endPaint(QWidget *widget, const QRegion& region, QImage *image);
104  VGImage surfaceImage() const;
105  QSize surfaceSize() const { return size; }
106 
107 protected:
108  QEglContext *context;
109  VGImage backBuffer;
110  EGLSurface backBufferSurface;
111  bool recreateBackBuffer;
112  bool isPaintingActive;
113  QSize size;
114  EGLSurface windowSurface;
115 
116  EGLSurface mainSurface() const;
117 };
118 
119 #endif // EGL_OPENVG_IMAGE
120 
122 {
123 public:
125  virtual ~QVGEGLWindowSurfaceDirect();
126 
128  void beginPaint(QWidget *widget);
129  void endPaint(QWidget *widget, const QRegion& region, QImage *image);
130  QSize surfaceSize() const { return size; }
131  bool supportsStaticContents() const;
132  bool scroll(QWidget *widget, const QRegion& area, int dx, int dy);
133 
134 protected:
139  EGLSurface windowSurface;
140 };
141 
143 
144 #endif // !QT_NO_EGL
145 
146 #endif // QWINDOWSURFACE_VGEGL_P_H
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
QPointer< QWidget > widget
virtual bool scroll(QWidget *, const QRegion &, int, int)
virtual QSize surfaceSize() const =0
virtual QEglContext * ensureContext(QWidget *widget)=0
The QWidget class is the base class of all user interface objects.
Definition: qwidget.h:150
virtual void endPaint(QWidget *widget, const QRegion &region, QImage *image=0)=0
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
virtual VGImage surfaceImage() const
The QImage class provides a hardware-independent image representation that allows direct access to th...
Definition: qimage.h:87
The QRegion class specifies a clip region for a painter.
Definition: qregion.h:68
The QWindowSurface class provides the drawing area for top-level windows.
The QSize class defines the size of a two-dimensional object using integer point precision.
Definition: qsize.h:53
virtual void beginPaint(QWidget *widget)=0
virtual bool supportsStaticContents() const
#define Q_OPENVG_EXPORT
Definition: qglobal.h:1457
static int area(const QSize &s)
Definition: qicon.cpp:155