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50
51#ifndef ENVIRONMENT_H
52#define ENVIRONMENT_H
53
54#include <qobject.h>
55#include <qlist.h>
56#include <qhash.h>
57#include <QTimerEvent>
58#include <QMouseEvent>
59#include <QKeyEvent>
60#include <QScriptEngine>
61#include <QScriptable>
62class QContext2DCanvas;
63
64//! [0]
65class Environment : public QObject
66{
67 Q_OBJECT
68 Q_PROPERTY(QScriptValue document READ document)
69public:
70 Environment(QObject *parent = 0);
71 ~Environment();
72
73 QScriptValue document() const;
74
75 void addCanvas(QContext2DCanvas *canvas);
76 QContext2DCanvas *canvasByName(const QString &name) const;
77 QList<QContext2DCanvas*> canvases() const;
78
79 QScriptValue evaluate(const QString &code,
80 const QString &fileName = QString());
81
82 QScriptValue toWrapper(QObject *object);
83
84 void handleEvent(QContext2DCanvas *canvas, QMouseEvent *e);
85 void handleEvent(QContext2DCanvas *canvas, QKeyEvent *e);
86
87 void reset();
88//! [0]
89
90 QScriptEngine *engine() const;
91 bool hasIntervalTimers() const;
92 void triggerTimers();
93
94//! [1]
95public slots:
96 int setInterval(const QScriptValue &expression, int delay);
97 void clearInterval(int timerId);
98
99 int setTimeout(const QScriptValue &expression, int delay);
100 void clearTimeout(int timerId);
101//! [1]
102
103//! [2]
104signals:
105 void scriptError(const QScriptValue &error);
106//! [2]
107
108protected:
109 void timerEvent(QTimerEvent *event);
110
111private:
112 QScriptValue eventHandler(QContext2DCanvas *canvas,
113 const QString &type, QScriptValue *who);
114 QScriptValue newFakeDomEvent(const QString &type,
115 const QScriptValue &target);
116 void maybeEmitScriptError();
117
118 QScriptEngine *m_engine;
119 QScriptValue m_originalGlobalObject;
120 QScriptValue m_document;
121 QList<QContext2DCanvas*> m_canvases;
122 QHash<int, QScriptValue> m_intervalHash;
123 QHash<int, QScriptValue> m_timeoutHash;
124};
125
126//! [3]
127class Document : public QObject
128{
129 Q_OBJECT
130public:
131 Document(Environment *env);
132 ~Document();
133
134public slots:
135 QScriptValue getElementById(const QString &id) const;
136 QScriptValue getElementsByTagName(const QString &name) const;
137
138 // EventTarget
139 void addEventListener(const QString &type, const QScriptValue &listener,
140 bool useCapture);
141};
142//! [3]
143
144class CanvasGradientPrototype : public QObject, public QScriptable
145{
146 Q_OBJECT
147protected:
148 CanvasGradientPrototype(QObject *parent = 0);
149public:
150 static void setup(QScriptEngine *engine);
151
152public slots:
153 void addColorStop(qreal offset, const QString &color);
154};
155
156#endif
157

source code of qtscript/examples/script/context2d/environment.h