qcontext2dcanvas.cpp Example File

script/context2d/qcontext2dcanvas.cpp
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#include "qcontext2dcanvas.h" #include "context2d.h" #include "environment.h" #include "domimage.h" #include <QPainter> #include <QPaintEvent> 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); } QContext2DCanvas::~QContext2DCanvas() { } Context2D *QContext2DCanvas::context() const { return m_context; } QScriptValue QContext2DCanvas::getContext(const QString &str) { if (str != "2d") return QScriptValue(); return m_env->toWrapper(m_context); } 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); } 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); } 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); } }