domimage.cpp Example File | Qt Script

- Qt 5.5
- Qt Script
- Context2D Example
- domimage.cpp Example File
- Qt 5.5.1 Reference Documentation

# domimage.cpp Example File

script/context2d/domimage.cpp

    /****************************************************************************
    **
    ** 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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    ** modification, are permitted provided that the following conditions are
    ** met:
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    **     distribution.
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    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
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    #include "domimage.h"

    #include <QVariant>

    #include <qscriptcontext.h>

    QScriptValue DomImage::s_self;

    DomImage::DomImage()
    {
    }

    int DomImage::width() const
    {
        return m_image.width();
    }

    int DomImage::height() const
    {
        return m_image.height();
    }

    QString DomImage::src() const
    {
        return m_src;
    }

    void DomImage::setSrc(const QString &src)
    {
        m_src = src;
        m_image = QImage(m_src);
    }

    QString DomImage::name() const
    {
        return m_src;
    }

    static QScriptValue Image(QScriptContext *context, QScriptEngine *env)
    {
        QScriptValue val = context->thisObject();
        DomImage *image = new DomImage();
        QScriptValue klass = env->newVariant(QVariant::fromValue(image));
        klass.setPrototype(DomImage::s_self);
        return klass;
    }

    static QScriptValue width(QScriptContext *context, QScriptEngine *)
    {
        QScriptValue val = context->thisObject();

        DomImage *image = qvariant_cast<DomImage*> (val.toVariant());
        if (image)
            return image->width();

        return 0;
    }

    static QScriptValue height(QScriptContext *context, QScriptEngine *)
    {
        QScriptValue val = context->thisObject();

        DomImage *image = qvariant_cast<DomImage*> (val.toVariant());
        if (image)
            return image->height();

        return 0;
    }

    static QScriptValue setSrc(QScriptContext *context, QScriptEngine *env)
    {
        QScriptValue val = context->thisObject();
        QString src  = context->argument(0).toString();

        DomImage *image = qvariant_cast<DomImage*> (val.toVariant());
        if (image)
            image->setSrc(src);

        return env->undefinedValue();
    }

    static QScriptValue name(QScriptContext *context, QScriptEngine *)
    {
        QScriptValue val = context->thisObject();

        DomImage *image = qvariant_cast<DomImage*> (val.toVariant());
        if (image)
            return image->name();

        return QString();
    }

    void DomImage::setup(QScriptEngine *e)
    {
        qRegisterMetaType<DomImage>();

        e->globalObject().setProperty("Image",
                                      e->newFunction(::Image, 0));

        s_self = e->newObject();
        s_self.setProperty("setSrc", e->newFunction(&::setSrc, 1));
        s_self.setProperty("width", e->newFunction(&::width));
        s_self.setProperty("height", e->newFunction(&::height));
        s_self.setProperty("name", e->newFunction(&::name));

        e->setDefaultPrototype(qMetaTypeId<DomImage>(), s_self);
    }