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/* This file is part of the KDE project
   Copyright (C) 2001, 2002, 2003 The Karbon Developers

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/

#ifndef __VPATTERNTOOL_H__
#define __VPATTERNTOOL_H__

#include <kdialogbase.h>

#include "vtool.h"
#include "vpattern.h"
#include "KoRect.h"

class TQHButtonGroup;
class TQToolButton;
class KoIconChooser;

class VPatternWidget : public KDialogBase
{
Q_OBJECT
  TQ_OBJECT

public:
	VPatternWidget( TQPtrList<KoIconItem>* patterns, VTool* tool, TQWidget* parent = 0L );
	~VPatternWidget();

	VPattern* selectedPattern();

public slots:
	void importPattern();
	void deletePattern();

	void slotButtonClicked( int id );
	void patternSelected( KoIconItem* );

private:
	KoIconChooser*        m_patternChooser;
	TQHButtonGroup*        m_buttonGroup;
	TQToolButton*          m_importPatternButton;
	TQToolButton*          m_deletePatternButton;
	VTool*                m_tool;
	VPattern*             m_pattern;
}; // VPatternWidget


class VPatternTool : public VTool
{
	Q_OBJECT
  TQ_OBJECT

public:
	VPatternTool( KarbonView *view );
	virtual ~VPatternTool();

	virtual void activate();
	virtual void deactivate();

	virtual void setup(KActionCollection *collection);
	virtual TQString uiname() { return i18n( "Pattern Tool" ); }
	virtual TQString contextHelp();
	virtual bool showDialog() const;

	virtual void draw( VPainter* painter );

protected:
	virtual void draw();

	virtual void mouseButtonRelease();
	virtual void mouseButtonPress();
	virtual void mouseDragRelease();
	virtual void mouseDrag();
	/*virtual void mouseDragShiftPressed(); // To use to scale the pattern.
	virtual void mouseDragShiftReleased(); */
	virtual void cancel();
	virtual void setCursor() const;
	virtual bool keyReleased( TQt::Key key );

	/**
	 * Determines the actual pattern to be edited.
	 *
	 * @param pattern the found pattern
	 * @return true if pattern was found, else false
	 */
	bool getPattern( VPattern &pattern );

protected slots:
	void targetChanged();

private:
	enum { normal, moveOrigin, moveVector, createNew } m_state;

	VPattern             m_pattern;
	KoPoint              m_current;  /**< the current position when dragging */
	KoPoint              m_fixed;    /**< the fixed point when only dragging one point of the gradient vector */
	VPatternWidget*	m_optionsWidget; /**< the options dialog, for selecting patterns */
	KoRect               m_origin;   /**< the handle of the pattern origin */
	KoRect               m_vector;   /**< the handle of the pattern vector */
	int                  m_handleSize; /**< the handle's size */
	bool                 m_active;   /**< holds active state of the tool, which is used for drawing of the pattern vector */
}; // VPatternTool

#endif /* __VPATTERNTOOL_H__ */