1 | /**************************************************************************** |
2 | ** |
3 | ** Copyright (C) 2018 The Qt Company Ltd. |
4 | ** Contact: https://www.qt.io/licensing/ |
5 | ** |
6 | ** This file is part of the QML preview debug service. |
7 | ** |
8 | ** $QT_BEGIN_LICENSE:LGPL$ |
9 | ** Commercial License Usage |
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16 | ** |
17 | ** GNU Lesser General Public License Usage |
18 | ** Alternatively, this file may be used under the terms of the GNU Lesser |
19 | ** General Public License version 3 as published by the Free Software |
20 | ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
21 | ** packaging of this file. Please review the following information to |
22 | ** ensure the GNU Lesser General Public License version 3 requirements |
23 | ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
24 | ** |
25 | ** GNU General Public License Usage |
26 | ** Alternatively, this file may be used under the terms of the GNU |
27 | ** General Public License version 2.0 or (at your option) the GNU General |
28 | ** Public license version 3 or any later version approved by the KDE Free |
29 | ** Qt Foundation. The licenses are as published by the Free Software |
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31 | ** included in the packaging of this file. Please review the following |
32 | ** information to ensure the GNU General Public License requirements will |
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35 | ** |
36 | ** $QT_END_LICENSE$ |
37 | ** |
38 | ****************************************************************************/ |
39 | |
40 | #ifndef QQMLPREVIEWHANDLER_H |
41 | #define QQMLPREVIEWHANDLER_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 "qqmlpreviewposition.h" |
55 | |
56 | #include <QtCore/qobject.h> |
57 | #include <QtCore/qvector.h> |
58 | #include <QtCore/qrect.h> |
59 | #include <QtCore/qpointer.h> |
60 | #include <QtCore/qelapsedtimer.h> |
61 | #include <QtQml/qqmlengine.h> |
62 | |
63 | QT_BEGIN_NAMESPACE |
64 | |
65 | class QQmlEngine; |
66 | class QQuickItem; |
67 | class QQmlPreviewUrlInterceptor; |
68 | class QQuickWindow; |
69 | class QTranslator; |
70 | |
71 | class QQmlPreviewHandler : public QObject |
72 | { |
73 | Q_OBJECT |
74 | public: |
75 | explicit QQmlPreviewHandler(QObject *parent = nullptr); |
76 | ~QQmlPreviewHandler(); |
77 | |
78 | void addEngine(QQmlEngine *engine); |
79 | void removeEngine(QQmlEngine *engine); |
80 | |
81 | void loadUrl(const QUrl &url); |
82 | void rerun(); |
83 | void zoom(qreal newFactor); |
84 | #if QT_CONFIG(translation) |
85 | void language(const QUrl &context, const QLocale &locale); |
86 | #endif |
87 | |
88 | void clear(); |
89 | |
90 | struct FpsInfo { |
91 | quint16 numSyncs; |
92 | quint16 minSync; |
93 | quint16 maxSync; |
94 | quint16 totalSync; |
95 | |
96 | quint16 numRenders; |
97 | quint16 minRender; |
98 | quint16 maxRender; |
99 | quint16 totalRender; |
100 | }; |
101 | |
102 | signals: |
103 | void error(const QString &message); |
104 | void fps(const FpsInfo &info); |
105 | |
106 | protected: |
107 | bool eventFilter(QObject *obj, QEvent *event); |
108 | private: |
109 | void doZoom(); |
110 | void tryCreateObject(); |
111 | void showObject(QObject *object); |
112 | void setCurrentWindow(QQuickWindow *window); |
113 | |
114 | void beforeSynchronizing(); |
115 | void afterSynchronizing(); |
116 | void beforeRendering(); |
117 | void frameSwapped(); |
118 | |
119 | void fpsTimerHit(); |
120 | #if QT_CONFIG(translation) |
121 | void removeTranslators(); |
122 | #endif |
123 | |
124 | QScopedPointer<QQuickItem> m_dummyItem; |
125 | QList<QQmlEngine *> m_engines; |
126 | QVector<QPointer<QObject>> m_createdObjects; |
127 | QScopedPointer<QQmlComponent> m_component; |
128 | QPointer<QQuickWindow> m_currentWindow; |
129 | qreal m_zoomFactor = 1.0; |
130 | bool m_supportsMultipleWindows; |
131 | QQmlPreviewPosition m_lastPosition; |
132 | |
133 | QTimer m_fpsTimer; |
134 | |
135 | struct FrameTime { |
136 | void beginFrame(); |
137 | void recordFrame(); |
138 | void endFrame(); |
139 | void reset(); |
140 | |
141 | QElapsedTimer timer; |
142 | qint64 elapsed = -1; |
143 | quint16 min = std::numeric_limits<quint16>::max(); |
144 | quint16 max = 0; |
145 | quint16 total = 0; |
146 | quint16 number = 0; |
147 | }; |
148 | |
149 | FrameTime m_rendering; |
150 | FrameTime m_synchronizing; |
151 | |
152 | #if QT_CONFIG(translation) |
153 | QScopedPointer<QTranslator> m_qtTranslator; |
154 | QScopedPointer<QTranslator> m_qmlTranslator; |
155 | #endif |
156 | }; |
157 | |
158 | QT_END_NAMESPACE |
159 | |
160 | Q_DECLARE_METATYPE(QQmlPreviewHandler::FpsInfo) |
161 | |
162 | #endif // QQMLPREVIEWHANDLER_H |
163 | |