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/* -*-objc-*-
GSAutoLayoutManagerPrivate.h
Copyright (C) 2002 Free Software Foundation, Inc.
Author: Nicola Pero <n.pero@mi.flashnet.it>
Date: April 2002
This file is part of GNUstep Renaissance
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,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _GNUstep_H_GSAutoLayoutManagerPrivate
#define _GNUstep_H_GSAutoLayoutManagerPrivate
/* This is a separate header file than GSAutoLayoutManager because
* these classes are to be used by GSAutoLayoutManager and its
* subclasses, but not by end-user applications. */
#include "GSAutoLayoutManager.h"
/* The ivars in these classes are public, because subclasses of
* GSAutoLayoutManager need to access them. The classes are trivial -
* they contain nearly no code and we access all instance variables
* directly from the GSAutoLayoutManager for performance reasons.
* They are basically structs which can be stored in ObjC arrays
* :-) */
@interface GSAutoLayoutManagerSegment : NSObject
{
/* All the ivars are public, we set/read them directly. */
@public
/* The minimum length of the segment contents. */
float _minimumContentsLength;
/* The min border of the segment. */
float _minBorder;
/* The max border of the segment. */
float _maxBorder;
/* 0 if the segment should be expanded when possible, because that
* would show additional information; > 0 if there is no additional
* information to show, and so the segment looks only uglier when
* expanded, and it's better not to expand it; in case > 0, then the
* value can be 1, 2, 3, 4 meaning if in case the segment really
* must be expanded, to expand it, or how to align the segment
* contents inside the segment, if left, center, or right. Because
* 0 is determined by a functional reason, while > 0 by an
* aesthetical reason, 0 should be strictly honoured, at the expense
* of not always honouring > 0.
*/
GSAutoLayoutAlignment _alignment;
/* This number holds either the number of columns in the line
* that the segment takes up (for standard layout managers),
* or the number of grid units that the segment takes up (for
* proportioned layout managers). Typically used to interact
* with other segments and lines. */
float _span;
/* The layout of the segment once minimum layout is done. */
GSAutoLayoutSegmentLayout _minimumLayout;
/* The layout of the segment once layout is done. */
GSAutoLayoutSegmentLayout _layout;
/* The layout of the segment contents once layout is done. This is
* the final computation result which we serve to clients. */
GSAutoLayoutSegmentLayout _contentsLayout;
}
@end
@class NSMutableArray;
@interface GSAutoLayoutManagerLine : NSObject
{
@public
/* The forced length of the line, or < 0 if none. */
float _forcedLength;
/* An array of GSAutoLayoutManagerSegment (or a subclass) objects.
* Created/destroyed when the object is created/destroyed, but for
* the rest managed directly by the GSAutoLayoutManager. */
NSMutableArray *_segments;
}
@end
#endif
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