1// Copyright (C) 2016 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#ifndef QQUICKWIDGET_P_H
5#define QQUICKWIDGET_P_H
6
7//
8// W A R N I N G
9// -------------
10//
11// This file is not part of the Qt API. It exists purely as an
12// implementation detail. This header file may change from version to
13// version without notice, or even be removed.
14//
15// We mean it.
16//
17
18#include "qquickwidget.h"
19#include <private/qwidget_p.h>
20#include <rhi/qrhi.h>
21#include <private/qbackingstorerhisupport_p.h>
22
23#include <QtCore/qurl.h>
24#include <QtCore/qelapsedtimer.h>
25#include <QtCore/qtimer.h>
26#include <QtCore/qpointer.h>
27#include <QtCore/QWeakPointer>
28
29#include <QtQml/qqmlengine.h>
30
31#include "private/qquickitemchangelistener_p.h"
32
33QT_BEGIN_NAMESPACE
34
35class QQmlContext;
36class QQmlError;
37class QQuickItem;
38class QQmlComponent;
39class QQuickRenderControl;
40
41class QQuickWidgetPrivate
42 : public QWidgetPrivate,
43 public QQuickItemChangeListener
44{
45 Q_DECLARE_PUBLIC(QQuickWidget)
46public:
47 static QQuickWidgetPrivate* get(QQuickWidget *view) { return view->d_func(); }
48 static const QQuickWidgetPrivate* get(const QQuickWidget *view) { return view->d_func(); }
49
50 QQuickWidgetPrivate();
51
52 void destroy();
53 void execute();
54 void itemGeometryChanged(QQuickItem *item, QQuickGeometryChange change, const QRectF &oldGeometry) override;
55 void initResize();
56 void updateSize();
57 void updatePosition();
58 void updateFrambufferObjectSize();
59 void setRootObject(QObject *);
60 void render(bool needsSync);
61 void renderSceneGraph();
62 void initializeWithRhi();
63 void handleContextCreationFailure(const QSurfaceFormat &format);
64
65 QPlatformBackingStoreRhiConfig rhiConfig() const override;
66 TextureData texture() const override;
67 QPlatformTextureList::Flags textureListFlags() override;
68 QImage grabFramebuffer() override;
69
70 void init(QQmlEngine* e = nullptr);
71 void ensureBackingScene();
72 void initOffscreenWindow();
73 void ensureEngine() const;
74 void handleWindowChange();
75 void invalidateRenderControl();
76
77 QSize rootObjectSize() const;
78
79 QPointer<QQuickItem> root;
80
81 QUrl source;
82
83 mutable QPointer<QQmlEngine> engine;
84 QQmlComponent *component;
85 QBasicTimer resizetimer;
86 QQuickWindow *offscreenWindow;
87 QQuickRenderControl *renderControl;
88
89 QRhi *rhi;
90 QRhiTexture *outputTexture;
91 QRhiRenderBuffer *depthStencil;
92 QRhiRenderBuffer *msaaBuffer;
93 QRhiTextureRenderTarget *rt;
94 QRhiRenderPassDescriptor *rtRp;
95
96 QQuickWidget::ResizeMode resizeMode;
97 QSize initialSize;
98 QElapsedTimer frameTimer;
99
100 QBasicTimer updateTimer;
101 bool eventPending;
102 bool updatePending;
103 bool fakeHidden;
104
105 int requestedSamples;
106
107 bool useSoftwareRenderer;
108 QImage softwareImage;
109 QRegion updateRegion;
110 bool forceFullUpdate;
111 bool deviceLost;
112
113 QBackingStoreRhiSupport offscreenRenderer;
114};
115
116class QQuickWidgetOffscreenWindow: public QQuickWindow
117{
118 Q_OBJECT
119
120public:
121 QQuickWidgetOffscreenWindow(QQuickWindowPrivate &dd, QQuickRenderControl *control);
122};
123
124QT_END_NAMESPACE
125
126#endif // QQuickWidget_P_H
127

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