/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the examples of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include "qcontext2dcanvas.h"+
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+
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#include "context2d.h"+
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#include "environment.h"+
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#include "domimage.h"+
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+
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#include <QPainter>+
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#include <QPaintEvent>+
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+
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//! [3]+
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QContext2DCanvas::QContext2DCanvas(Context2D *context, Environment *env, QWidget *parent)+
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    : QWidget(parent), m_context(context), m_env(env)+
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{+
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    QObject::connect(context, SIGNAL(changed(QImage)), this, SLOT(contentsChanged(QImage)));+
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    setMouseTracking(true);+
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}+
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//! [3]+
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+
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QContext2DCanvas::~QContext2DCanvas()+
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{+
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}+
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+
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Context2D *QContext2DCanvas::context() const+
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{+
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    return m_context;+
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}+
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+
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//! [0]+
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QScriptValue QContext2DCanvas::getContext(const QString &str)+
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{+
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    if (str != "2d")+
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        return QScriptValue();+
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    return m_env->toWrapper(m_context);+
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}+
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//! [0]+
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+
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//! [1]+
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void QContext2DCanvas::contentsChanged(const QImage &image)+
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{+
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    m_image = image;+
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    update();+
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}+
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+
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void QContext2DCanvas::paintEvent(QPaintEvent *e)+
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{+
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    QPainter p(this);+
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#ifdef Q_WS_S60+
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// Draw white rect first since in with some themes the js-file content will produce black-on-black.+
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    QBrush whiteBgBrush(Qt::white);+
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    p.fillRect(e->rect(), whiteBgBrush);+
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#endif+
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    p.setClipRect(e->rect());+
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    p.drawImage(0, 0, m_image);+
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}+
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//! [1]+
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+
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//! [2]+
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void QContext2DCanvas::mouseMoveEvent(QMouseEvent *e)+
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{+
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    m_env->handleEvent(this, e);+
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}+
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+
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void QContext2DCanvas::mousePressEvent(QMouseEvent *e)+
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{+
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    m_env->handleEvent(this, e);+
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}+
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+
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void QContext2DCanvas::mouseReleaseEvent(QMouseEvent *e)+
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{+
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    m_env->handleEvent(this, e);+
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}+
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+
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void QContext2DCanvas::keyPressEvent(QKeyEvent *e)+
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{+
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    m_env->handleEvent(this, e);+
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}+
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+
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void QContext2DCanvas::keyReleaseEvent(QKeyEvent *e)+
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{+
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    m_env->handleEvent(this, e);+
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}+
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//! [2]+
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+
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void QContext2DCanvas::resizeEvent(QResizeEvent *e)+
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{+
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    m_context->setSize(e->size().width(), e->size().height());+
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}+
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+
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void QContext2DCanvas::resize(int width, int height)+
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{+
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    QWidget::resize(width, height);+
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}+
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+
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void QContext2DCanvas::reset()+
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{+
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    m_context->reset();+
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}+
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+
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void QContext2DCanvas::addEventListener(const QString &type, const QScriptValue &listener,+
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                                        bool useCapture)+
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{+
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    Q_UNUSED(useCapture);+
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    if (listener.isFunction()) {+
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        QScriptValue self = m_env->toWrapper(this);+
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        self.setProperty("on" + type, listener);+
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    }+
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}+
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