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/**********************************************************************
** Copyright (C) 2000 Trolltech AS. All rights reserved.
**
** This file is part of Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#ifndef QIMPENSTROKE_H_
#define QIMPENSTROKE_H_
#include <qobject.h>
#include <qarray.h>
#include <qlist.h>
struct Q_PACKED QIMPenGlyphLink
{
signed char dx;
signed char dy;
};
class QIMPenStroke
{
public:
QIMPenStroke();
QIMPenStroke( const QIMPenStroke & );
void clear();
bool isEmpty() const { return links.isEmpty(); }
unsigned int length() const { return links.count(); }
unsigned int match( QIMPenStroke *st );
const QArray<QIMPenGlyphLink> &chain() const { return links; }
QPoint startingPoint() const { return startPoint; }
void setStartingPoint( const QPoint &p ) { startPoint = p; }
QRect boundingRect();
QIMPenStroke &operator=( const QIMPenStroke &s );
void beginInput( QPoint p );
bool addPoint( QPoint p );
void endInput();
QArray<int> sig() { createTanSignature(); return tsig; } // for debugging
protected:
void createSignatures();
void createTanSignature();
void createAngleSignature();
void createDistSignature();
int calcError( const QArray<int> &base, const QArray<int> &win,
int off, bool t );
QArray<int> scale( const QArray<int> &s, unsigned count, bool t = FALSE );
void internalAddPoint( QPoint p );
QPoint calcCenter();
int arcTan( int dy, int dx );
QArray<int> createBase( const QArray<int> a, int e );
void smooth( QArray<int> &);
protected:
QPoint startPoint;
QPoint lastPoint;
QArray<QIMPenGlyphLink> links;
QArray<int> tsig;
QArray<int> asig;
QArray<int> dsig;
QRect bounding;
friend QDataStream &operator<< (QDataStream &, const QIMPenStroke &);
friend QDataStream &operator>> (QDataStream &, QIMPenStroke &);
};
typedef QList<QIMPenStroke> QIMPenStrokeList;
typedef QListIterator<QIMPenStroke> QIMPenStrokeIterator;
QDataStream & operator<< (QDataStream & s, const QIMPenStroke &ws);
QDataStream & operator>> (QDataStream & s, const QIMPenStroke &ws);
#endif
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