/*
 * Kivio - Visual Modelling and Flowcharting
 * Copyright (C) 2000-2001 theKompany.com & Dave Marotti
 * Copyright (C) 2002 Patrick Julien <freak@codepimps.org>
 *
 * 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.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
#ifndef KIS_RULER_H_
#define KIS_RULER_H_

#include <qframe.h>
#include <qpixmap.h>
#include <koUnit.h>

// XXX: Make this look more like the KOffice ruler -- the KOffice
// ruler is not quite suited to Krita. Also: start units with 0,
// print every 100 units.

class QPainter;

class KisRuler : public QFrame {
	Q_OBJECT
	typedef QFrame super;

public:
	KisRuler(Qt::Orientation, QWidget *parent = 0, const char *name = 0);
	virtual ~KisRuler();

public:
	KoUnit::Unit unit() const;

public slots:
	void setZoom(double zoom);
	void updatePointer(Q_INT32 x, Q_INT32 y);
	void updateVisibleArea(Q_INT32 xpos, Q_INT32 ypos);
	void setUnit(KoUnit::Unit u);
	void hide();
	void show();

public:
	virtual void paintEvent(QPaintEvent *e);
	virtual void resizeEvent(QResizeEvent *e);

protected:
	void recalculateSize();
	void drawRuler();
	void initMarker(Q_INT32 w, Q_INT32 h);
	void drawNums(QPainter *gc, Q_INT32 x, Q_INT32 y, QString& num, bool orientationHoriz);

private:
	KoUnit::Unit m_unit;
	Qt::Orientation m_orientation;
	Q_INT32 m_firstVisible;
	Q_INT32 m_currentPosition;
	QPixmap *m_pixmapBuffer;
	QPixmap m_pixmapMarker;
	QPixmap m_pixmapNums;
	double m_zoom;

private:
	static const char *m_nums[];
};

#endif // KIS_RULER_H_

