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domimage.cpp Example File
script/context2d/domimage.cpp

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 ** This file is part of the documentation of the Qt Toolkit.
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 ** contact [email protected] if any conditions of this licensing
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 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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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(qVariantFromValue(image));
     klass.setPrototype(DomImage::s_self);
     return klass;
 }

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

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

     return QScriptValue(env, 0);
 }

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

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

     return QScriptValue(env, 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 *env)
 {
     QScriptValue val = context->thisObject();

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

     return QScriptValue(env, 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);
 }