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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the examples of the Qt Toolkit.

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     9 ** $QT_BEGIN_LICENSE:LGPL$

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    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

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    24 ** In addition, as a special exception, Nokia gives you certain additional

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    38 ** $QT_END_LICENSE$

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    40 ****************************************************************************/

    41 

    42 #include "qcontext2dcanvas.h"

    43 

    44 #include "context2d.h"

    45 #include "environment.h"

    46 #include "domimage.h"

    47 

    48 #include <QPainter>

    49 #include <QPaintEvent>

    50 

    51 //! [3]

    52 QContext2DCanvas::QContext2DCanvas(Context2D *context, Environment *env, QWidget *parent)

    53     : QWidget(parent), m_context(context), m_env(env)

    54 {

    55     QObject::connect(context, SIGNAL(changed(QImage)), this, SLOT(contentsChanged(QImage)));

    56     setMouseTracking(true);

    57 }

    58 //! [3]

    59 

    60 QContext2DCanvas::~QContext2DCanvas()

    61 {

    62 }

    63 

    64 Context2D *QContext2DCanvas::context() const

    65 {

    66     return m_context;

    67 }

    68 

    69 //! [0]

    70 QScriptValue QContext2DCanvas::getContext(const QString &str)

    71 {

    72     if (str != "2d")

    73         return QScriptValue();

    74     return m_env->toWrapper(m_context);

    75 }

    76 //! [0]

    77 

    78 //! [1]

    79 void QContext2DCanvas::contentsChanged(const QImage &image)

    80 {

    81     m_image = image;

    82     update();

    83 }

    84 

    85 void QContext2DCanvas::paintEvent(QPaintEvent *e)

    86 {

    87     QPainter p(this);

    88 #ifdef Q_WS_S60

    89 // Draw white rect first since in with some themes the js-file content will produce black-on-black.

    90     QBrush whiteBgBrush(Qt::white);

    91     p.fillRect(e->rect(), whiteBgBrush);

    92 #endif

    93     p.setClipRect(e->rect());

    94     p.drawImage(0, 0, m_image);

    95 }

    96 //! [1]

    97 

    98 //! [2]

    99 void QContext2DCanvas::mouseMoveEvent(QMouseEvent *e)

   100 {

   101     m_env->handleEvent(this, e);

   102 }

   103 

   104 void QContext2DCanvas::mousePressEvent(QMouseEvent *e)

   105 {

   106     m_env->handleEvent(this, e);

   107 }

   108 

   109 void QContext2DCanvas::mouseReleaseEvent(QMouseEvent *e)

   110 {

   111     m_env->handleEvent(this, e);

   112 }

   113 

   114 void QContext2DCanvas::keyPressEvent(QKeyEvent *e)

   115 {

   116     m_env->handleEvent(this, e);

   117 }

   118 

   119 void QContext2DCanvas::keyReleaseEvent(QKeyEvent *e)

   120 {

   121     m_env->handleEvent(this, e);

   122 }

   123 //! [2]

   124 

   125 void QContext2DCanvas::resizeEvent(QResizeEvent *e)

   126 {

   127     m_context->setSize(e->size().width(), e->size().height());

   128 }

   129 

   130 void QContext2DCanvas::resize(int width, int height)

   131 {

   132     QWidget::resize(width, height);

   133 }

   134 

   135 void QContext2DCanvas::reset()

   136 {

   137     m_context->reset();

   138 }

   139 

   140 void QContext2DCanvas::addEventListener(const QString &type, const QScriptValue &listener,

   141                                         bool useCapture)

   142 {

   143     Q_UNUSED(useCapture);

   144     if (listener.isFunction()) {

   145         QScriptValue self = m_env->toWrapper(this);

   146         self.setProperty("on" + type, listener);

   147     }

   148 }