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325 lines
13 KiB
Plaintext
325 lines
13 KiB
Plaintext
/*
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* CPParagraphStyle.j
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* AppKit
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*
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* Created by Daniel Boehringer on 11/01/2014
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* Copyright Daniel Boehringer 2014.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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@import <Foundation/CPObject.j>
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@import <Foundation/CPArray.j>
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@import <Foundation/CPDictionary.j>
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var CPParagraphStyleAttributeName = @"CPParagraphStyleAttributeName";
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// Standard Tab Interval (28pts is roughly 4 spaces in standard fonts)
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var kDefaultTabInterval = 28.0;
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// MARK: - CPTextTab Implementation
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@implementation CPTextTab : CPObject
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{
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CPTextAlignment _alignment @accessors(readonly, property=alignment);
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float _location @accessors(readonly, property=location);
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CPDictionary _options @accessors(readonly, property=options);
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}
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- (id)initWithTextAlignment:(CPTextAlignment)anAlignment location:(float)aLocation options:(CPDictionary)options
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{
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if (self = [super init])
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{
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_alignment = anAlignment;
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_location = aLocation;
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_options = [options copy];
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}
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return self;
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}
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// Convenience initializer matching AppKit behavior
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- (id)initWithType:(CPTabStopType)aType location:(float)aLocation
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{
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// Map old TabStopType to TextAlignment for modern compatibility
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return [self initWithTextAlignment:aType location:aLocation options:nil];
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}
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- (BOOL)isEqual:(id)other
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{
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if (self === other) return YES;
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if (![other isKindOfClass:[CPTextTab class]]) return NO;
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return _location === [other location] &&
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_alignment === [other alignment] &&
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((_options == nil && [other options] == nil) || [_options isEqualToDictionary:[other options]]);
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}
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- (id)copy
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{
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return [[CPTextTab alloc] initWithTextAlignment:_alignment location:_location options:_options];
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}
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- (id)initWithCoder:(CPCoder)aCoder
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{
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if (self = [super init])
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{
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_alignment = [aCoder decodeIntForKey:@"CPTextTabAlignment"];
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_location = [aCoder decodeFloatForKey:@"CPTextTabLocation"];
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_options = [aCoder decodeObjectForKey:@"CPTextTabOptions"];
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}
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return self;
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}
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- (void)encodeWithCoder:(CPCoder)aCoder
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{
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[aCoder encodeInt:_alignment forKey:@"CPTextTabAlignment"];
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[aCoder encodeFloat:_location forKey:@"CPTextTabLocation"];
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[aCoder encodeObject:_options forKey:@"CPTextTabOptions"];
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}
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@end
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// MARK: - CPParagraphStyle Implementation
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var _sharedDefaultParagraphStyle = nil;
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@implementation CPParagraphStyle : CPObject
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{
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float _lineSpacing @accessors(readonly, property=lineSpacing);
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float _paragraphSpacing @accessors(readonly, property=paragraphSpacing);
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CPTextAlignment _alignment @accessors(readonly, property=alignment);
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float _headIndent @accessors(readonly, property=headIndent);
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float _tailIndent @accessors(readonly, property=tailIndent);
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float _firstLineHeadIndent @accessors(readonly, property=firstLineHeadIndent);
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float _minimumLineHeight @accessors(readonly, property=minimumLineHeight);
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float _maximumLineHeight @accessors(readonly, property=maximumLineHeight);
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CPLineBreakMode _lineBreakMode @accessors(readonly, property=lineBreakMode);
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CPWritingDirection _baseWritingDirection @accessors(readonly, property=baseWritingDirection);
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float _lineHeightMultiple @accessors(readonly, property=lineHeightMultiple);
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float _paragraphSpacingBefore @accessors(readonly, property=paragraphSpacingBefore);
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float _defaultTabInterval @accessors(readonly, property=defaultTabInterval);
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CPArray _tabStops @accessors(readonly, property=tabStops);
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}
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+ (CPParagraphStyle)defaultParagraphStyle
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{
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if (!_sharedDefaultParagraphStyle)
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{
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_sharedDefaultParagraphStyle = [[CPParagraphStyle alloc] init];
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// Ensure defaults are set on the shared instance internal vars
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// Since it's immutable, we rely on the init to set these.
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}
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return _sharedDefaultParagraphStyle;
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}
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+ (CPWritingDirection)defaultWritingDirectionForLanguage:(CPString)languageName
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{
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// Simplified: Cappuccino usually assumes LTR unless specified otherwise.
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return CPWritingDirectionLeftToRight;
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}
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- (id)init
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{
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if (self = [super init])
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{
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_lineSpacing = 0.0;
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_paragraphSpacing = 0.0;
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_alignment = CPLeftTextAlignment;
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_headIndent = 0.0;
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_tailIndent = 0.0;
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_firstLineHeadIndent = 0.0;
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_minimumLineHeight = 0.0;
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_maximumLineHeight = 0.0;
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_lineBreakMode = CPLineBreakByWordWrapping;
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_baseWritingDirection = CPWritingDirectionNatural;
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_lineHeightMultiple = 0.0;
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_paragraphSpacingBefore = 0.0;
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_defaultTabInterval = kDefaultTabInterval;
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// Generate default tab stops
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_tabStops = [];
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for (var i = 1; i <= 12; i++)
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{
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[_tabStops addObject:[[CPTextTab alloc] initWithType:CPLeftTextAlignment
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location:i * kDefaultTabInterval]];
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}
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}
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return self;
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}
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- (id)initWithParagraphStyle:(CPParagraphStyle)other
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{
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if (self = [super init])
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{
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_lineSpacing = [other lineSpacing];
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_paragraphSpacing = [other paragraphSpacing];
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_alignment = [other alignment];
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_headIndent = [other headIndent];
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_tailIndent = [other tailIndent];
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_firstLineHeadIndent = [other firstLineHeadIndent];
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_minimumLineHeight = [other minimumLineHeight];
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_maximumLineHeight = [other maximumLineHeight];
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_lineBreakMode = [other lineBreakMode];
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_baseWritingDirection = [other baseWritingDirection];
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_lineHeightMultiple = [other lineHeightMultiple];
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_paragraphSpacingBefore = [other paragraphSpacingBefore];
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_defaultTabInterval = [other defaultTabInterval];
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_tabStops = [[other tabStops] copy];
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}
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return self;
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}
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- (id)copy
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{
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// Since this class is immutable, return self.
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// Subclasses (Mutable) will override.
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if ([self class] === [CPParagraphStyle class])
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return self;
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return [[CPParagraphStyle alloc] initWithParagraphStyle:self];
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}
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- (id)mutableCopy
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{
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return [[CPMutableParagraphStyle alloc] initWithParagraphStyle:self];
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}
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// MARK: - Equality
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- (BOOL)isEqual:(id)other
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{
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if (self === other) return YES;
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if (![other isKindOfClass:[CPParagraphStyle class]]) return NO;
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return _lineSpacing === [other lineSpacing] &&
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_paragraphSpacing === [other paragraphSpacing] &&
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_alignment === [other alignment] &&
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_headIndent === [other headIndent] &&
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_tailIndent === [other tailIndent] &&
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_firstLineHeadIndent === [other firstLineHeadIndent] &&
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_lineBreakMode === [other lineBreakMode] &&
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[_tabStops isEqualToArray:[other tabStops]];
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}
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@end
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// MARK: - CPMutableParagraphStyle Implementation
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@implementation CPMutableParagraphStyle : CPParagraphStyle
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{
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}
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- (void)addTabStop:(CPTextTab)aTabStop
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{
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// Copy on write logic would go here if we shared structure,
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// but here we just mutate the array.
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[_tabStops addObject:aTabStop];
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}
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- (void)setTabStops:(CPArray)newTabStops
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{
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if (_tabStops === newTabStops) return;
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_tabStops = [newTabStops copy];
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}
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- (id)copyWithZone:(CPZone)aZone
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{
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// Return an immutable copy
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return [[CPParagraphStyle alloc] initWithParagraphStyle:self];
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}
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@end
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// MARK: - CPCoding
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var CPParagraphStyleLineSpacingKey = @"CPParagraphStyleLineSpacingKey",
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CPParagraphStyleParagraphSpacingKey = @"CPParagraphStyleParagraphSpacingKey",
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CPParagraphStyleAlignmentKey = @"CPParagraphStyleAlignmentKey",
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CPParagraphStyleHeadIndentKey = @"CPParagraphStyleHeadIndentKey",
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CPParagraphStyleTailIndentKey = @"CPParagraphStyleTailIndentKey",
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CPParagraphStyleFirstLineHeadIndentKey = @"CPParagraphStyleFirstLineHeadIndentKey",
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CPParagraphStyleMinimumLineHeightKey = @"CPParagraphStyleMinimumLineHeightKey",
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CPParagraphStyleMaximumLineHeightKey = @"CPParagraphStyleMaximumLineHeightKey",
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CPParagraphStyleLineBreakModeKey = @"CPParagraphStyleLineBreakModeKey",
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CPParagraphStyleTabStopsKey = @"CPParagraphStyleTabStopsKey",
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CPParagraphStyleBaseWritingDirectionKey = @"CPParagraphStyleBaseWritingDirectionKey",
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CPParagraphStyleLineHeightMultipleKey = @"CPParagraphStyleLineHeightMultipleKey",
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CPParagraphStyleParagraphSpacingBeforeKey = @"CPParagraphStyleParagraphSpacingBeforeKey",
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CPParagraphStyleDefaultTabIntervalKey = @"CPParagraphStyleDefaultTabIntervalKey";
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@implementation CPParagraphStyle (CPCoding)
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- (id)initWithCoder:(CPCoder)aCoder
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{
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if (self = [super init])
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{
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_lineSpacing = [aCoder decodeFloatForKey:CPParagraphStyleLineSpacingKey];
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_paragraphSpacing = [aCoder decodeFloatForKey:CPParagraphStyleParagraphSpacingKey];
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_alignment = [aCoder decodeIntForKey:CPParagraphStyleAlignmentKey];
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_headIndent = [aCoder decodeFloatForKey:CPParagraphStyleHeadIndentKey];
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_tailIndent = [aCoder decodeFloatForKey:CPParagraphStyleTailIndentKey];
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_firstLineHeadIndent = [aCoder decodeFloatForKey:CPParagraphStyleFirstLineHeadIndentKey];
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_minimumLineHeight = [aCoder decodeFloatForKey:CPParagraphStyleMinimumLineHeightKey];
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_maximumLineHeight = [aCoder decodeFloatForKey:CPParagraphStyleMaximumLineHeightKey];
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_lineBreakMode = [aCoder decodeIntForKey:CPParagraphStyleLineBreakModeKey];
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_tabStops = [aCoder decodeObjectForKey:CPParagraphStyleTabStopsKey];
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// Handle potential missing keys for backward compatibility or new properties
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if ([aCoder containsValueForKey:CPParagraphStyleBaseWritingDirectionKey])
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_baseWritingDirection = [aCoder decodeIntForKey:CPParagraphStyleBaseWritingDirectionKey];
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else
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_baseWritingDirection = CPWritingDirectionNatural;
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if ([aCoder containsValueForKey:CPParagraphStyleLineHeightMultipleKey])
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_lineHeightMultiple = [aCoder decodeFloatForKey:CPParagraphStyleLineHeightMultipleKey];
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if ([aCoder containsValueForKey:CPParagraphStyleParagraphSpacingBeforeKey])
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_paragraphSpacingBefore = [aCoder decodeFloatForKey:CPParagraphStyleParagraphSpacingBeforeKey];
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if ([aCoder containsValueForKey:CPParagraphStyleDefaultTabIntervalKey])
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_defaultTabInterval = [aCoder decodeFloatForKey:CPParagraphStyleDefaultTabIntervalKey];
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else
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_defaultTabInterval = kDefaultTabInterval;
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if (!_tabStops) _tabStops = [];
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}
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return self;
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}
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- (void)encodeWithCoder:(CPCoder)aCoder
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{
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[aCoder encodeFloat:_lineSpacing forKey:CPParagraphStyleLineSpacingKey];
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[aCoder encodeFloat:_paragraphSpacing forKey:CPParagraphStyleParagraphSpacingKey];
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[aCoder encodeInt:_alignment forKey:CPParagraphStyleAlignmentKey];
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[aCoder encodeFloat:_headIndent forKey:CPParagraphStyleHeadIndentKey];
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[aCoder encodeFloat:_tailIndent forKey:CPParagraphStyleTailIndentKey];
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[aCoder encodeFloat:_firstLineHeadIndent forKey:CPParagraphStyleFirstLineHeadIndentKey];
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[aCoder encodeFloat:_minimumLineHeight forKey:CPParagraphStyleMinimumLineHeightKey];
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[aCoder encodeFloat:_maximumLineHeight forKey:CPParagraphStyleMaximumLineHeightKey];
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[aCoder encodeInt:_lineBreakMode forKey:CPParagraphStyleLineBreakModeKey];
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[aCoder encodeObject:_tabStops forKey:CPParagraphStyleTabStopsKey];
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[aCoder encodeInt:_baseWritingDirection forKey:CPParagraphStyleBaseWritingDirectionKey];
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[aCoder encodeFloat:_lineHeightMultiple forKey:CPParagraphStyleLineHeightMultipleKey];
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[aCoder encodeFloat:_paragraphSpacingBefore forKey:CPParagraphStyleParagraphSpacingBeforeKey];
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[aCoder encodeFloat:_defaultTabInterval forKey:CPParagraphStyleDefaultTabIntervalKey];
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}
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@end
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