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| ** This file is part of the examples of the Qt Toolkit. |
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| |
| #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); |
| 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); |
| } |
| } |