qcontext2dcanvas.h Example Filescript/context2d/qcontext2dcanvas.h/**************************************************************************** ** ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** You may use this file under the terms of the BSD license as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor ** the names of its contributors may be used to endorse or promote ** products derived from this software without specific prior written ** permission. ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #ifndef QCONTEXT2DCANVAS_H #define QCONTEXT2DCANVAS_H #include <qscriptengine.h> #include <qscriptcontext.h> #include <qscriptvalue.h> #include <QWidget> class QPaintEvent; class QResizeEvent; class QMouseEvent; class QKeyEvent; class Environment; class Context2D; class QContext2DCanvas : public QWidget { Q_OBJECT public: QContext2DCanvas(Context2D *context, Environment *env, QWidget *parent = 0); ~QContext2DCanvas(); Context2D *context() const; void reset(); public slots: QScriptValue getContext(const QString &str); void resize(int width, int height); // EventTarget void addEventListener(const QString &type, const QScriptValue &listener, bool useCapture); protected: virtual void paintEvent(QPaintEvent *e); virtual void mouseMoveEvent(QMouseEvent *e); virtual void mousePressEvent(QMouseEvent *e); virtual void mouseReleaseEvent(QMouseEvent *e); virtual void keyPressEvent(QKeyEvent *e); virtual void keyReleaseEvent(QKeyEvent *e); virtual void resizeEvent(QResizeEvent *e); private slots: void contentsChanged(const QImage &image); private: Context2D *m_context; Environment *m_env; QImage m_image; }; #endif |