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Current File : //usr/include/GNUstep/AppKit/NSParagraphStyle.h
/*
NSParagraphStyle.h
NSParagraphStyle and NSMutableParagraphStyle hold paragraph style
information NSTextTab holds information about a single tab stop
Copyright (C) 1996,1999 Free Software Foundation, Inc.
Author: Daniel Böhringer <boehring@biomed.ruhr-uni-bochum.de>
Date: August 1998
Update: Richard Frith-Macdonald <richard@brainstorm.co.uk> March 1999
This file is part of the GNUstep GUI Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; see the file COPYING.LIB.
If not, see <http://www.gnu.org/licenses/> or write to the
Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef _GNUstep_H_NSParagraphStyle
#define _GNUstep_H_NSParagraphStyle
#import <GNUstepBase/GSVersionMacros.h>
#import <Foundation/NSObject.h>
#import <AppKit/NSText.h>
typedef enum _NSTextTabType {
NSLeftTabStopType = 0,
NSRightTabStopType,
NSCenterTabStopType,
NSDecimalTabStopType
} NSTextTabType;
enum _NSLineBreakMode { /* What to do with long lines */
NSLineBreakByWordWrapping = 0, /* Wrap at word boundaries, default */
NSLineBreakByCharWrapping, /* Wrap at character boundaries */
NSLineBreakByClipping, /* Simply clip */
NSLineBreakByTruncatingHead, /* Truncate at head of line: "...wxyz" */
NSLineBreakByTruncatingTail, /* Truncate at tail of line: "abcd..." */
NSLineBreakByTruncatingMiddle /* Truncate middle of line: "ab...yz" */
};
typedef NSUInteger NSLineBreakMode;
enum _NSWritingDirection {
NSWritingDirectionNaturalDirection,
NSWritingDirectionLeftToRight,
NSWritingDirectionRightToLeft
};
enum {
NSWritingDirectionNatural = NSWritingDirectionNaturalDirection
};
typedef NSInteger NSWritingDirection;
#if OS_API_VERSION(MAC_OS_X_VERSION_10_3, GS_API_LATEST)
APPKIT_EXPORT NSString *NSTabColumnTerminatorsAttributeName;
#endif
@interface NSTextTab : NSObject <NSCopying, NSCoding>
{
NSTextTabType _tabStopType;
NSDictionary *_options;
NSTextAlignment _alignment;
float _location;
}
- (id) initWithType: (NSTextTabType)type location: (CGFloat)loc;
- (CGFloat) location;
- (NSTextTabType) tabStopType;
#if OS_API_VERSION(MAC_OS_X_VERSION_10_3, GS_API_LATEST)
- (id) initWithTextAlignment: (NSTextAlignment)align
location: (CGFloat)loc
options: (NSDictionary *)options;
- (NSTextAlignment) alignment;
- (NSDictionary *) options;
#endif
@end
@interface NSParagraphStyle : NSObject <NSCopying, NSMutableCopying, NSCoding>
{
NSMutableArray *_tabStops;
NSArray *_textBlocks;
NSArray *_textLists;
float _lineSpacing;
float _paragraphSpacing;
float _headIndent;
float _tailIndent;
float _firstLineHeadIndent;
float _minimumLineHeight;
float _maximumLineHeight;
float _paragraphSpacingBefore;
float _defaultTabInterval;
float _hyphenationFactor;
float _lineHeightMultiple;
float _tighteningFactorForTruncation;
NSTextAlignment _alignment;
NSLineBreakMode _lineBreakMode;
NSWritingDirection _baseDirection;
int _headerLevel;
}
+ (NSParagraphStyle*) defaultParagraphStyle;
/*
* "Leading": distance between the bottom of one line fragment and top
* of next (applied between lines in the same container).
* Can't be negative. This value is included in the line fragment
* heights in layout manager.
*/
- (CGFloat) lineSpacing;
/*
* Distance between the bottom of this paragraph and top of next.
*/
- (CGFloat) paragraphSpacing;
- (NSTextAlignment) alignment;
/*
* The following values are relative to the appropriate margin
* (depending on the paragraph direction)
*/
/*
* Distance from margin to front edge of paragraph
*/
- (CGFloat) headIndent;
/*
* Distance from margin to back edge of paragraph; if negative or 0,
* from other margin
*/
- (CGFloat) tailIndent;
/*
* Distance from margin to edge appropriate for text direction
*/
- (CGFloat) firstLineHeadIndent;
/*
* Distance from margin to tab stops
*/
- (NSArray *)tabStops;
/*
* Line height is the distance from bottom of descenders to to
* of ascenders; basically the line fragment height. Does not include
* lineSpacing (which is added after this computation).
*/
- (CGFloat) minimumLineHeight;
/*
* 0 implies no maximum.
*/
- (CGFloat) maximumLineHeight;
- (NSLineBreakMode) lineBreakMode;
#if OS_API_VERSION(MAC_OS_X_VERSION_10_2, GS_API_LATEST)
/*
* Returns the writing direction of "language", which is an ISO 639
* two- or three letter code, e.g. "en", or an ISO language-region
* format, e.g. "en_GB"
*/
+ (NSWritingDirection) defaultWritingDirectionForLanguage: (NSString*) language;
- (NSWritingDirection) baseWritingDirection;
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_3, GS_API_LATEST)
- (CGFloat) defaultTabInterval;
- (CGFloat) lineHeightMultiple;
- (CGFloat) paragraphSpacingBefore;
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_4, GS_API_LATEST)
- (NSInteger) headerLevel;
- (float) hyphenationFactor;
- (NSArray *) textBlocks;
- (NSArray *) textLists;
- (float) tighteningFactorForTruncation;
#endif
@end
@interface NSMutableParagraphStyle : NSParagraphStyle
{
}
- (void) setLineSpacing: (CGFloat)aFloat;
- (void) setParagraphSpacing: (CGFloat)aFloat;
- (void) setAlignment: (NSTextAlignment)newAlignment;
- (void) setFirstLineHeadIndent: (CGFloat)aFloat;
- (void) setHeadIndent: (CGFloat)aFloat;
- (void) setTailIndent: (CGFloat)aFloat;
- (void) setLineBreakMode: (NSLineBreakMode)mode;
- (void) setMinimumLineHeight: (CGFloat)aFloat;
- (void) setMaximumLineHeight: (CGFloat)aFloat;
- (void) addTabStop: (NSTextTab*)anObject;
- (void) removeTabStop: (NSTextTab*)anObject;
- (void) setTabStops: (NSArray*)array;
- (void) setParagraphStyle: (NSParagraphStyle*)obj;
#if OS_API_VERSION(MAC_OS_X_VERSION_10_2, GS_API_LATEST)
- (void) setBaseWritingDirection: (NSWritingDirection)direction;
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_3, GS_API_LATEST)
- (void) setDefaultTabInterval: (CGFloat)interval;
- (void) setLineHeightMultiple: (CGFloat)factor;
- (void) setParagraphSpacingBefore: (CGFloat)spacing;
#endif
#if OS_API_VERSION(MAC_OS_X_VERSION_10_4, GS_API_LATEST)
- (void) setHeaderLevel: (NSInteger)level;
- (void) setHyphenationFactor: (float)factor;
- (void) setTextBlocks: (NSArray *)blocks;
- (void) setTextLists: (NSArray *)lists;
- (void) setTighteningFactorForTruncation: (float)factor;
#endif
@end
#endif // _GNUstep_H_NSParagraphStyle
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