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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef ENVIRONMENT_H
#define ENVIRONMENT_H
#include <qobject.h>
#include <qlist.h>
#include <qhash.h>
#include <QTimerEvent>
#include <QMouseEvent>
#include <QKeyEvent>
#include <QScriptEngine>
#include <QScriptable>
class QContext2DCanvas;
//! [0]
class Environment : public QObject
{
Q_OBJECT
Q_PROPERTY(QScriptValue document READ document)
public:
Environment(QObject *parent = 0);
~Environment();
QScriptValue document() const;
void addCanvas(QContext2DCanvas *canvas);
QContext2DCanvas *canvasByName(const QString &name) const;
QList<QContext2DCanvas*> canvases() const;
QScriptValue evaluate(const QString &code,
const QString &fileName = QString());
QScriptValue toWrapper(QObject *object);
void handleEvent(QContext2DCanvas *canvas, QMouseEvent *e);
void handleEvent(QContext2DCanvas *canvas, QKeyEvent *e);
void reset();
//! [0]
QScriptEngine *engine() const;
bool hasIntervalTimers() const;
void triggerTimers();
//! [1]
public slots:
int setInterval(const QScriptValue &expression, int delay);
void clearInterval(int timerId);
int setTimeout(const QScriptValue &expression, int delay);
void clearTimeout(int timerId);
//! [1]
//! [2]
signals:
void scriptError(const QScriptValue &error);
//! [2]
protected:
void timerEvent(QTimerEvent *event);
private:
QScriptValue eventHandler(QContext2DCanvas *canvas,
const QString &type, QScriptValue *who);
QScriptValue newFakeDomEvent(const QString &type,
const QScriptValue &target);
void maybeEmitScriptError();
QScriptEngine *m_engine;
QScriptValue m_originalGlobalObject;
QScriptValue m_document;
QList<QContext2DCanvas*> m_canvases;
QHash<int, QScriptValue> m_intervalHash;
QHash<int, QScriptValue> m_timeoutHash;
};
//! [3]
class Document : public QObject
{
Q_OBJECT
public:
Document(Environment *env);
~Document();
public slots:
QScriptValue getElementById(const QString &id) const;
QScriptValue getElementsByTagName(const QString &name) const;
// EventTarget
void addEventListener(const QString &type, const QScriptValue &listener,
bool useCapture);
};
//! [3]
class CanvasGradientPrototype : public QObject, public QScriptable
{
Q_OBJECT
protected:
CanvasGradientPrototype(QObject *parent = 0);
public:
static void setup(QScriptEngine *engine);
public slots:
void addColorStop(qreal offset, const QString &color);
};
#endif
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