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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qcontext2dcanvas.h"
#include "context2d.h"
#include "environment.h"
#include "domimage.h"
#include <QPainter>
#include <QPaintEvent>
//! [3]
QContext2DCanvas::QContext2DCanvas(Context2D *context, Environment *env, QWidget *parent)
: QWidget(parent), m_context(context), m_env(env)
{
QObject::connect(context, SIGNAL(changed(QImage)), this, SLOT(contentsChanged(QImage)));
setMouseTracking(true);
}
//! [3]
QContext2DCanvas::~QContext2DCanvas()
{
}
Context2D *QContext2DCanvas::context() const
{
return m_context;
}
//! [0]
QScriptValue QContext2DCanvas::getContext(const QString &str)
{
if (str != "2d")
return QScriptValue();
return m_env->toWrapper(m_context);
}
//! [0]
//! [1]
void QContext2DCanvas::contentsChanged(const QImage &image)
{
m_image = image;
update();
}
void QContext2DCanvas::paintEvent(QPaintEvent *e)
{
QPainter p(this);
#ifdef Q_WS_S60
// Draw white rect first since in with some themes the js-file content will produce black-on-black.
QBrush whiteBgBrush(Qt::white);
p.fillRect(e->rect(), whiteBgBrush);
#endif
p.setClipRect(e->rect());
p.drawImage(0, 0, m_image);
}
//! [1]
//! [2]
void QContext2DCanvas::mouseMoveEvent(QMouseEvent *e)
{
m_env->handleEvent(this, e);
}
void QContext2DCanvas::mousePressEvent(QMouseEvent *e)
{
m_env->handleEvent(this, e);
}
void QContext2DCanvas::mouseReleaseEvent(QMouseEvent *e)
{
m_env->handleEvent(this, e);
}
void QContext2DCanvas::keyPressEvent(QKeyEvent *e)
{
m_env->handleEvent(this, e);
}
void QContext2DCanvas::keyReleaseEvent(QKeyEvent *e)
{
m_env->handleEvent(this, e);
}
//! [2]
void QContext2DCanvas::resizeEvent(QResizeEvent *e)
{
m_context->setSize(e->size().width(), e->size().height());
}
void QContext2DCanvas::resize(int width, int height)
{
QWidget::resize(width, height);
}
void QContext2DCanvas::reset()
{
m_context->reset();
}
void QContext2DCanvas::addEventListener(const QString &type, const QScriptValue &listener,
bool useCapture)
{
Q_UNUSED(useCapture);
if (listener.isFunction()) {
QScriptValue self = m_env->toWrapper(this);
self.setProperty("on" + type, listener);
}
}
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