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141 lines
3.9 KiB
141 lines
3.9 KiB
/**
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This file is part of Kig, a KDE program for Interactive Geometry...
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Copyright (C) 2002 Dominique Devriese <devriese@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
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USA
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**/
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#ifndef RECT_H
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#define RECT_H
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#include "coordinate.h"
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#include <tqrect.h>
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#include <kdebug.h>
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/**
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* like Coordinate is a TQPoint replacement with doubles, this is a
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* TQRect replacement with doubles...
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*/
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class Rect
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{
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public:
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/**
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* constructors...
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*/
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Rect( const Coordinate bottomLeft, const Coordinate topRight );
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Rect( const Coordinate bottomLeft, const double width, const double height );
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Rect( double xa, double ya, double width, double height );
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Rect( const Rect& r );
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Rect();
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static Rect invalidRect();
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bool valid();
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void setBottomLeft( const Coordinate p );
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void setTopLeft( const Coordinate p );
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void setTopRight( const Coordinate p );
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void setBottomRight( const Coordinate p );
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void setCenter( const Coordinate p );
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void setLeft( const double p);
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void setRight( const double p);
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void setTop( const double p );
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void setBottom( const double p );
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void setWidth( const double w );
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void setHeight( const double h );
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/**
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* this makes sure width and height are > 0 ...
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*/
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void normalize();
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/**
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* this makes sure p is in the rect, extending it if necessary...
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*/
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void setContains( Coordinate p );
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/**
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* moves the rect while keeping the size constant...
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*/
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void moveBy( const Coordinate p );
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/**
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* synonym for moveBy...
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*/
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Rect& operator+=( const Coordinate p ) { moveBy(p); return *this; }
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/**
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* scale: only the size changes, topLeft is kept where it is...
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*/
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void scale( const double r );
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/**
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* synonym for scale...
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*/
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Rect& operator*=( const double r ) { scale(r); return *this; }
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Rect& operator/=( const double r ) { scale(1/r); return *this; }
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/**
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* This expands the rect so that it contains r. It has friends
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* '|=' and '|' below...
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*/
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void eat( const Rect& r );
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/**
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* synonym for eat..
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*/
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Rect& operator|=( const Rect& rhs ) { eat( rhs ); return *this; }
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/**
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* return a rect which is a copy of this rect, but has an aspect
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* ratio equal to rhs's one.. if \p shrink is true, the rect will be
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* shrunk, otherwise extended.. The center of the new rect is the
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* same as this rect's center..
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*/
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Rect matchShape( const Rect& rhs, bool shrink = false ) const;
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TQRect toTQRect() const;
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Coordinate bottomLeft() const;
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Coordinate bottomRight() const;
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Coordinate topLeft() const;
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Coordinate topRight() const;
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Coordinate center() const;
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double left() const;
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double right() const;
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double bottom() const;
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double top() const;
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double width() const;
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double height() const;
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bool contains( const Coordinate& p ) const;
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bool contains( const Coordinate& p, double allowed_miss ) const;
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bool intersects( const Rect& p ) const;
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Rect normalized() const;
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friend kdbgstream& operator<<( kdbgstream& s, const Rect& t );
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static Rect fromTQRect( const TQRect& );
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protected:
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Coordinate mBottomLeft;
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double mwidth;
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double mheight;
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};
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bool operator==( const Rect& r, const Rect& s );
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kdbgstream& operator<<( kdbgstream& s, const Rect& t );
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/**
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* this operator returns a Rect that contains both the given
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* rects..
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*/
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Rect operator|( const Rect& lhs, const Rect& rhs );
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#endif
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