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39
40#ifndef QQUICKWIDGET_P_H
41#define QQUICKWIDGET_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include "qquickwidget.h"
55#include <private/qwidget_p.h>
56
57#include <QtCore/qurl.h>
58#include <QtCore/qelapsedtimer.h>
59#include <QtCore/qtimer.h>
60#include <QtCore/qpointer.h>
61#include <QtCore/QWeakPointer>
62
63#include <QtQml/qqmlengine.h>
64
65#include "private/qquickitemchangelistener_p.h"
66
67QT_BEGIN_NAMESPACE
68
69class QQmlContext;
70class QQmlError;
71class QQuickItem;
72class QQmlComponent;
73class QQuickRenderControl;
74class QOpenGLContext;
75class QOffscreenSurface;
76
77class QQuickWidgetPrivate
78 : public QWidgetPrivate,
79 public QQuickItemChangeListener
80{
81 Q_DECLARE_PUBLIC(QQuickWidget)
82public:
83 static QQuickWidgetPrivate* get(QQuickWidget *view) { return view->d_func(); }
84 static const QQuickWidgetPrivate* get(const QQuickWidget *view) { return view->d_func(); }
85
86 QQuickWidgetPrivate();
87 ~QQuickWidgetPrivate();
88
89 void execute();
90 void itemGeometryChanged(QQuickItem *item, QQuickGeometryChange change, const QRectF &oldGeometry) override;
91 void initResize();
92 void updateSize();
93 void updatePosition();
94 void updateFrambufferObjectSize();
95 void setRootObject(QObject *);
96 void render(bool needsSync);
97 void renderSceneGraph();
98 void createContext();
99 void destroyContext();
100 void handleContextCreationFailure(const QSurfaceFormat &format);
101
102#if QT_CONFIG(opengl)
103 GLuint textureId() const override;
104 QPlatformTextureList::Flags textureListFlags() override;
105 QImage grabFramebuffer() override;
106#else
107 QImage grabFramebuffer();
108#endif
109
110 void init(QQmlEngine* e = 0);
111 void ensureEngine() const;
112 void handleWindowChange();
113 void invalidateRenderControl();
114
115 QSize rootObjectSize() const;
116
117 QPointer<QQuickItem> root;
118
119 QUrl source;
120
121 mutable QPointer<QQmlEngine> engine;
122 QQmlComponent *component;
123 QBasicTimer resizetimer;
124 QQuickWindow *offscreenWindow;
125 QOffscreenSurface *offscreenSurface;
126 QQuickRenderControl *renderControl;
127
128#if QT_CONFIG(opengl)
129 QOpenGLFramebufferObject *fbo;
130 QOpenGLFramebufferObject *resolvedFbo;
131 QOpenGLContext *context;
132#endif
133
134 QQuickWidget::ResizeMode resizeMode;
135 QSize initialSize;
136 QElapsedTimer frameTimer;
137
138 QBasicTimer updateTimer;
139 bool eventPending;
140 bool updatePending;
141 bool fakeHidden;
142
143 int requestedSamples;
144
145 bool useSoftwareRenderer;
146 QImage softwareImage;
147 QRegion updateRegion;
148 bool forceFullUpdate;
149};
150
151QT_END_NAMESPACE
152
153#endif // QQuickWidget_P_H
154

source code of qtdeclarative/src/quickwidgets/qquickwidget_p.h