qcontext2dcanvas.h Example File | Qt Script

- Qt 5.5
- Qt Script
- Context2D Example
- qcontext2dcanvas.h Example File
- Qt 5.5.1 Reference Documentation

# qcontext2dcanvas.h Example File

script/context2d/qcontext2dcanvas.h

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** 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:
    **
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    #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