domimage.cpp Example File | Qt Script

Qt 5.6 | Qt Script | Context2D Example | domimage.cpp Example File

Qt 5.6.2 Reference Documentation

# domimage.cpp Example File

script/context2d/domimage.cpp

      /****************************************************************************
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      ** This file is part of the examples of the Qt Toolkit.
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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);
      }