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diff --git a/src/canvasitemparts.h b/src/canvasitemparts.h
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+/***************************************************************************
+ *   Copyright (C) 2003-2005 by David Saxton                               *
+ *   [email protected]                                                    *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ ***************************************************************************/
+
+#ifndef CANVASITEMPARTS_H
+#define CANVASITEMPARTS_H
+
+#include <qcanvas.h>
+#include <qguardedptr.h>
+#include <qslider.h>
+#include <qtoolbutton.h>
+
+class Cells;
+class CIWidgetMgr;
+class CNItem;
+class SliderWidget;
+class ToolButton;
+class QString;
+
+class GuiPart : public QObject, public QCanvasRectangle
+{
+	Q_OBJECT
+	public:
+		/**
+		 * Create a GuiPart. Control the position using setGuiPartSize, instead
+		 * of calling QCanvasRectangle::setSize. This allows GuiPart to know
+		 * when its size has been changed
+		 */
+		GuiPart( CNItem *parent, const QRect & r, QCanvas * canvas );
+		virtual ~GuiPart();
+		
+		virtual QRect recommendedRect() const { return m_originalRect; }
+		void setOriginalRect( const QRect & r ) { m_originalRect = r; }
+		
+		virtual void updateConnectorPoints( bool add );
+		
+		/**
+		 * Set the angle that the GuiPart draws itself (if the GuiPart chooses
+		 * to use it by calling initPainter and deinitPainter from drawShape).
+		 * Note that this doesn't affect the rectangle position that the
+		 * GuiPart is in. The rotation is taken to be about the center of the
+		 * rectangle.
+		 */
+		void setAngleDegrees( int angleDegrees );
+		/**
+		 * Control the size. Call this instead of QCanvasRectangle::setSize. In
+		 * turn, this function will notify subclasses via posChanged();
+		 */
+		void setGuiPartSize( int width, int height );
+		/**
+		 * Returns the rectangle to draw in to compensate for rotation of
+		 * the QPainter
+		 */
+		QRect drawRect();
+		
+		int angleDegrees() const { return m_angleDegrees; }
+		CNItem *parent() const { return p_parent; }
+	
+	protected:
+		/**
+		 * Called when the size or angle changes
+		 */
+		virtual void posChanged() {;}
+		/**
+		 * Rotate / etc the painter. You must call deinitPainter after
+		 * calling this function.
+		 */
+		void initPainter( QPainter & p );
+		/**
+		 * Complement function to initPainter - restores painter to normal
+		 * transform
+		 */
+		void deinitPainter( QPainter & p );
+		int m_angleDegrees;
+		CNItem *p_parent;
+		bool b_pointsAdded;
+		QRect m_originalRect;
+		
+	private slots:
+		void slotMoveBy( double dx, double dy );
+};
+
+
+/**
+@short Stores internal information about text associated with CNItem
+@author David Saxton
+*/
+class Text : public GuiPart
+{
+	Q_OBJECT
+	public:
+		Text( const QString &text, CNItem *parent, const QRect & r, QCanvas * canvas, int flags = Qt::AlignHCenter | Qt::AlignVCenter );
+		~Text();
+		
+		/**
+		 * Set the text, returning true if the size of this Text on the canvas
+		 * has changed.
+		 */
+		bool setText( const QString & text );
+		virtual QRect recommendedRect() const;
+		virtual void drawShape ( QPainter & p );
+		/**
+		 * The text flags (see QPainter::drawText) - Qt::AlignmentFlags and
+		 * Qt::TextFlags OR'd together.
+		 */
+		int flags() const { return m_flags; }
+		/**
+		 * @see flags
+		 */
+		void setFlags( int flags );
+		
+	protected:
+		QString m_text;
+		int m_flags;
+};
+typedef QMap<QString, QGuardedPtr<Text> > TextMap;
+
+
+/**
+@short Base class for embedding Qt Widgets into the canvas
+@author David Saxton
+*/
+class Widget : public GuiPart
+{
+	public:
+		Widget( const QString & id, CNItem *parent, const QRect & r, QCanvas * canvas );
+		~Widget();
+		
+		virtual int rtti() const;
+		
+		virtual QWidget *widget() const = 0;
+		QString id() const { return m_id; }
+		
+		/**
+		 * Set the widget enabled/disabled
+		 */
+		void setEnabled( bool enabled );
+		
+		virtual void enterEvent() {};
+		virtual void leaveEvent() {};
+		
+		/**
+		 * Mouse was pressed. pos is given relative to CNItem position.
+		 */
+		virtual void mousePressEvent( QMouseEvent *e ) { Q_UNUSED(e); }
+		/**
+		 * Mouse was released. pos is given relative to CNItem position.
+		 */
+		virtual void mouseReleaseEvent( QMouseEvent *e ) { Q_UNUSED(e); }
+		/**
+		 * Mouse was double clicked. pos is given relative to CNItem position.
+		 */
+		virtual void mouseDoubleClickEvent( QMouseEvent *e ) { Q_UNUSED(e); }
+		/**
+		 * Mouse was moved. pos is given relative to CNItem position.
+		 */
+		virtual void mouseMoveEvent( QMouseEvent *e ) { Q_UNUSED(e); }
+		/**
+		 * Mouse was scrolled. pos is given relative to CNItem position.
+		 */
+		virtual void wheelEvent( QWheelEvent *e ) { Q_UNUSED(e); }
+		
+		virtual void drawShape( QPainter &p );
+	
+	protected:
+		virtual void posChanged();
+		QString m_id;
+};
+
+
+class ToolButton : public QToolButton
+{
+	public:
+		ToolButton( QWidget* parent );
+		
+		virtual void mousePressEvent( QMouseEvent *e ) { QToolButton::mousePressEvent(e); }
+		virtual void mouseReleaseEvent( QMouseEvent *e ) { QToolButton::mouseReleaseEvent(e); }
+		virtual void mouseDoubleClickEvent ( QMouseEvent *e ) { QToolButton::mouseDoubleClickEvent(e); }
+		virtual void mouseMoveEvent( QMouseEvent *e ) { QToolButton::mouseMoveEvent(e); }
+		virtual void wheelEvent( QWheelEvent *e ) { QToolButton::wheelEvent(e); }
+		virtual void enterEvent() { QToolButton::enterEvent(0l); }
+		virtual void leaveEvent() { QToolButton::leaveEvent(0l); }
+		
+		void setAngleDegrees( int angleDegrees ) { m_angleDegrees = angleDegrees; }
+		
+	protected:
+		virtual void drawButtonLabel( QPainter * p );
+		
+		int m_angleDegrees;
+		QFont m_font;
+};
+
+
+/**
+@short Stores internal information about button associated with CNItem
+@author David Saxton
+*/
+class Button : public Widget
+{
+	Q_OBJECT
+	public:
+		Button( const QString & id, CNItem *parent, bool isToggle, const QRect & r, QCanvas * canvas );
+		~Button();
+		
+		virtual void mousePressEvent( QMouseEvent *e );
+		virtual void mouseReleaseEvent( QMouseEvent *e );
+		virtual void enterEvent();
+		virtual void leaveEvent();
+		
+		/**
+		 * Set the text displayed inside the button
+		 */
+		void setText( const QString &text );
+		void setToggle( bool toggle );
+		bool isToggle() const { return b_isToggle; }
+		virtual QWidget *widget() const;
+		bool state() const;
+		void setPixmap( const QPixmap & );
+		void setState( bool state );
+		virtual QRect recommendedRect() const;
+		
+	protected:
+		virtual void posChanged();
+		
+	private slots:
+		void slotStateChanged();
+		
+	private:
+		bool b_isToggle; // i.e. whether it should be depressed when the mouse is released
+		ToolButton *m_button;
+};
+	
+	
+class SliderWidget : public QSlider
+{
+	public:
+		SliderWidget( QWidget* parent );
+	
+		virtual void mousePressEvent( QMouseEvent *e ) { QSlider::mousePressEvent(e); }
+		virtual void mouseReleaseEvent( QMouseEvent *e ) { QSlider::mouseReleaseEvent(e); }
+		virtual void mouseDoubleClickEvent ( QMouseEvent *e ) { QSlider::mouseDoubleClickEvent(e); }
+		virtual void mouseMoveEvent( QMouseEvent *e ) { QSlider::mouseMoveEvent(e); }
+		virtual void wheelEvent( QWheelEvent *e ) { QSlider::wheelEvent(e); }
+		virtual void enterEvent() { QSlider::enterEvent(0l); }
+		virtual void leaveEvent() { QSlider::leaveEvent(0l); }
+};
+	
+	
+/**
+@short Stores internal information about a QSlider associated with CNItem
+@author David Saxton
+*/
+class Slider : public Widget
+{
+	Q_OBJECT
+	public:
+		Slider( const QString & id, CNItem *parent, const QRect & r, QCanvas * canvas );
+		~Slider();
+		
+		virtual void mousePressEvent( QMouseEvent *e );
+		virtual void mouseReleaseEvent( QMouseEvent *e );
+		virtual void mouseDoubleClickEvent ( QMouseEvent *e );
+		virtual void mouseMoveEvent( QMouseEvent *e );
+		virtual void wheelEvent( QWheelEvent *e );
+		virtual void enterEvent();
+		virtual void leaveEvent();
+		
+		virtual QWidget *widget() const;
+		int value() const;
+		void setValue( int value );
+		void setOrientation( Qt::Orientation o );
+		
+	protected:
+		virtual void posChanged();
+		
+	private slots:
+		void slotValueChanged( int value );
+		
+	private:
+		SliderWidget *m_slider;
+		Orientation m_orientation;
+};
+	
+#endif
+