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# plugin.cpp Example File
demos/arthurplugin/plugin.cpp

        #include <QtDesigner/QDesignerContainerExtension>
        #include <QtDesigner/QDesignerCustomWidgetInterface>

        #include <QtCore/qplugin.h>
        #include <QtGui/QIcon>
        #include <QtGui/QLineEdit>

        #include "xform.h"
        #include "pathdeform.h"
        #include "gradients.h"
        #include "pathstroke.h"
        #include "hoverpoints.h"
        #include "composition.h"

        class QDesignerFormEditorInterface;

        class PathDeformRendererEx : public PathDeformRenderer
        {
            Q_OBJECT
        public:
            PathDeformRendererEx(QWidget *parent) : PathDeformRenderer(parent) { }
            QSize sizeHint() const { return QSize(300, 200); }
        };

        class DemoPlugin : public QDesignerCustomWidgetInterface
        {
            Q_INTERFACES(QDesignerCustomWidgetInterface)
                public:
            DemoPlugin() : m_initialized(false) { }
            bool isContainer() const { return false; }
            bool isInitialized() const { return m_initialized; }
            QIcon icon() const { return QIcon(); }
            QString codeTemplate() const { return QString(); }
            QString whatsThis() const { return QString(); }
            QString toolTip() const { return QString(); }
            QString group() const { return "Arthur Widgets [Demo]"; }
            void initialize(QDesignerFormEditorInterface *)
            {
                if (m_initialized)
                    return;
                m_initialized = true;
            }
        private:
            bool m_initialized;
        };

        class DeformPlugin : public QObject, public DemoPlugin
        {
            Q_OBJECT
        public:
            DeformPlugin(QObject *parent = 0) : QObject(parent) { }

            QString includeFile() const { return "deform.h"; }
            QString name() const { return "PathDeformRendererEx"; }

            QWidget *createWidget(QWidget *parent)
            {
                PathDeformRenderer *deform = new PathDeformRendererEx(parent);
                deform->setRadius(70);
                deform->setAnimated(false);
                deform->setFontSize(20);
                deform->setText("Arthur Widgets Demo");

                return deform;
            }

        };

        class XFormRendererEx : public XFormView
        {
            Q_OBJECT
        public:
            XFormRendererEx(QWidget *parent) : XFormView(parent) { textEditor = new QLineEdit; }
            QSize sizeHint() const { return QSize(300, 200); }

        public slots:
        void setText(const QString &text) { textEditor->setText(text); }
        };

        class XFormPlugin : public QObject, public DemoPlugin
        {
            Q_OBJECT
        public:
            XFormPlugin(QObject *parent = 0) : QObject(parent) { }
            QString includeFile() const { return "xform.h"; }
            QString name() const { return "XFormRendererEx"; }

            QWidget *createWidget(QWidget *parent)
            {
                XFormRendererEx *xform = new XFormRendererEx(parent);
                xform->setText("Qt - Hello World!!");
                return xform;
            }
        };

        class GradientEditorPlugin : public QObject, public DemoPlugin
        {
            Q_OBJECT
        public:
            GradientEditorPlugin(QObject *parent = 0) : QObject(parent) { }
            QString includeFile() const { return "gradients.h"; }
            QString name() const { return "GradientEditor"; }

            QWidget *createWidget(QWidget *parent)
            {
                GradientEditor *editor = new GradientEditor(parent);
                return editor;
            }
        };

        class GradientRendererEx : public GradientRenderer
        {
            Q_OBJECT
        public:
            GradientRendererEx(QWidget *p) : GradientRenderer(p) { }
            QSize sizeHint() const { return QSize(300, 200); }
        };

        class GradientRendererPlugin : public QObject, public DemoPlugin
        {
            Q_OBJECT
        public:
            GradientRendererPlugin(QObject *parent = 0) : QObject(parent) { }
            QString includeFile() const { return "gradients.h"; }
            QString name() const { return "GradientRendererEx"; }

            QWidget *createWidget(QWidget *parent)
            {
                GradientRenderer *renderer = new GradientRendererEx(parent);
                renderer->setConicalGradient();
                return renderer;
            }
        };

        class PathStrokeRendererEx : public PathStrokeRenderer
        {
            Q_OBJECT
        public:
            PathStrokeRendererEx(QWidget *p) : PathStrokeRenderer(p) { }
            QSize sizeHint() const { return QSize(300, 200); }
        };

        class StrokeRenderPlugin : public QObject, public DemoPlugin
        {
            Q_OBJECT
        public:
            StrokeRenderPlugin(QObject *parent = 0) : QObject(parent) { }
            QString includeFile() const { return "pathstroke.h"; }
            QString name() const { return "PathStrokeRendererEx"; }

            QWidget *createWidget(QWidget *parent)
            {
                PathStrokeRenderer *stroke = new PathStrokeRendererEx(parent);
                return stroke;
            }
        };

        class CompositionModePlugin : public QObject, public DemoPlugin
        {
            Q_OBJECT
        public:
            CompositionModePlugin(QObject *parent = 0) : QObject(parent) { }
            QString includeFile() const { return "composition.h"; }
            QString name() const { return "CompositionRenderer"; }

            QWidget *createWidget(QWidget *parent)
            {
                CompositionRenderer *renderer = new CompositionRenderer(parent);
                renderer->setAnimationEnabled(false);
                return renderer;
            }
        };

        class ArthurPlugins : public QObject, public QDesignerCustomWidgetCollectionInterface
        {
            Q_OBJECT
            Q_INTERFACES(QDesignerCustomWidgetCollectionInterface)
                public:
            QList<QDesignerCustomWidgetInterface*> customWidgets() const
            {
                QList<QDesignerCustomWidgetInterface *> plugins;
                plugins
                    << new DeformPlugin
                    << new XFormPlugin
                    << new GradientEditorPlugin
                    << new GradientRendererPlugin
                    << new StrokeRenderPlugin
                    << new CompositionModePlugin;
                return plugins;
            }
        };

        #include "plugin.moc"

        Q_EXPORT_PLUGIN(ArthurPlugins)