forked from twitter-archive/twui
/
TUIAttributedString.m
266 lines (219 loc) · 6.96 KB
/
TUIAttributedString.m
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
/*
Copyright 2011 Twitter, Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this work except in compliance with the License.
You may obtain a copy of the License in the LICENSE file, or at:
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#import "TUIAttributedString.h"
#import "TUIColor.h"
NSString * const TUIAttributedStringBackgroundColorAttributeName = @"TUIAttributedStringBackgroundColorAttributeName";
NSString * const TUIAttributedStringBackgroundFillStyleName = @"TUIAttributedStringBackgroundFillStyleName";
NSString * const TUIAttributedStringPreDrawBlockName = @"TUIAttributedStringPreDrawBlockName";
@implementation TUIAttributedString
+ (TUIAttributedString *)stringWithString:(NSString *)string
{
return (TUIAttributedString *)[[NSMutableAttributedString alloc] initWithString:string ? : @""];
}
@end
@implementation NSMutableAttributedString (TUIAdditions)
- (NSRange)_stringRange
{
return NSMakeRange(0, [self length]);
}
- (void)setFont:(NSFont *)font inRange:(NSRange)range
{
// NSFont and CTFont are toll-free bridged.
[self addAttribute:(NSString *)kCTFontAttributeName value:font range:range];
}
- (void)setColor:(TUIColor *)color inRange:(NSRange)range
{
[self addAttribute:(NSString *)kCTForegroundColorAttributeName value:(id)[color CGColor] range:range];
}
- (void)setShadow:(NSShadow *)shadow inRange:(NSRange)range
{
[self addAttribute:NSShadowAttributeName value:shadow range:range];
}
- (void)setKerning:(CGFloat)k inRange:(NSRange)range
{
[self addAttribute:(NSString *)kCTKernAttributeName value:[NSNumber numberWithFloat:k] range:range];
}
- (void)setFont:(NSFont *)font
{
[self setFont:font inRange:[self _stringRange]];
}
- (void)setColor:(TUIColor *)color
{
[self setColor:color inRange:[self _stringRange]];
}
- (void)setBackgroundColor:(TUIColor *)color
{
[self setBackgroundColor:color inRange:[self _stringRange]];
}
- (void)setBackgroundColor:(TUIColor *)color inRange:(NSRange)range
{
[self addAttribute:TUIAttributedStringBackgroundColorAttributeName value:(id)[color CGColor] range:range];
}
- (void)setBackgroundFillStyle:(TUIBackgroundFillStyle)fillStyle
{
[self setBackgroundFillStyle:fillStyle inRange:[self _stringRange]];
}
- (void)setBackgroundFillStyle:(TUIBackgroundFillStyle)fillStyle inRange:(NSRange)range
{
[self addAttribute:TUIAttributedStringBackgroundFillStyleName value:[NSNumber numberWithInteger:fillStyle] range:range];
}
- (void)setPreDrawBlock:(TUIAttributedStringPreDrawBlock)block inRange:(NSRange)range
{
[self addAttribute:TUIAttributedStringPreDrawBlockName value:[block copy] range:range];
}
- (void)setShadow:(NSShadow *)shadow
{
[self setShadow:shadow inRange:[self _stringRange]];
}
- (void)setKerning:(CGFloat)f
{
[self setKerning:f inRange:[self _stringRange]];
}
- (void)setLineHeight:(CGFloat)f
{
[self setLineHeight:f inRange:[self _stringRange]];
}
- (void)setLineHeight:(CGFloat)f inRange:(NSRange)range
{
CTParagraphStyleSetting settings[] = {
{ kCTParagraphStyleSpecifierMinimumLineHeight, sizeof(f), &f },
{ kCTParagraphStyleSpecifierMaximumLineHeight, sizeof(f), &f },
};
CTParagraphStyleRef paragraphStyle = CTParagraphStyleCreate(settings, sizeof(settings) / sizeof(settings[0]));
[self addAttributes:[NSDictionary dictionaryWithObjectsAndKeys:(__bridge id)paragraphStyle, kCTParagraphStyleAttributeName, nil] range:range];
CFRelease(paragraphStyle);
}
NSParagraphStyle *ABNSParagraphStyleForTextAlignment(TUITextAlignment alignment)
{
NSTextAlignment a = NSLeftTextAlignment;
switch(alignment) {
case TUITextAlignmentRight:
a = NSRightTextAlignment;
break;
case TUITextAlignmentCenter:
a = NSCenterTextAlignment;
break;
case TUITextAlignmentJustified:
a = NSJustifiedTextAlignment;
break;
case TUITextAlignmentLeft:
default:
a = NSLeftTextAlignment;
break;
}
NSMutableParagraphStyle *p = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
[p setAlignment:a];
return p;
}
- (void)setAlignment:(TUITextAlignment)alignment lineBreakMode:(TUILineBreakMode)lineBreakMode
{
CTLineBreakMode nativeLineBreakMode = kCTLineBreakByTruncatingTail;
switch(lineBreakMode) {
case TUILineBreakModeWordWrap:
nativeLineBreakMode = kCTLineBreakByWordWrapping;
break;
case TUILineBreakModeCharacterWrap:
nativeLineBreakMode = kCTLineBreakByCharWrapping;
break;
case TUILineBreakModeClip:
nativeLineBreakMode = kCTLineBreakByClipping;
break;
case TUILineBreakModeHeadTruncation:
nativeLineBreakMode = kCTLineBreakByTruncatingHead;
break;
case TUILineBreakModeTailTruncation:
nativeLineBreakMode = kCTLineBreakByTruncatingTail;
break;
case TUILineBreakModeMiddleTruncation:
nativeLineBreakMode = kCTLineBreakByTruncatingMiddle;
break;
}
CTTextAlignment nativeTextAlignment;
switch(alignment) {
case TUITextAlignmentRight:
nativeTextAlignment = kCTRightTextAlignment;
break;
case TUITextAlignmentCenter:
nativeTextAlignment = kCTCenterTextAlignment;
break;
case TUITextAlignmentJustified:
nativeTextAlignment = kCTJustifiedTextAlignment;
break;
case TUITextAlignmentLeft:
default:
nativeTextAlignment = kCTLeftTextAlignment;
break;
}
// TUIAttributedString *s = [TUIAttributedString stringWithString:self];
CTParagraphStyleSetting settings[] = {
kCTParagraphStyleSpecifierLineBreakMode, sizeof(CTLineBreakMode), &nativeLineBreakMode,
kCTParagraphStyleSpecifierAlignment, sizeof(CTTextAlignment), &nativeTextAlignment,
};
CTParagraphStyleRef p = CTParagraphStyleCreate(settings, 2);
[self addAttribute:(NSString *)kCTParagraphStyleAttributeName value:(__bridge_transfer id)p range:[self _stringRange]];
}
- (void)setAlignment:(TUITextAlignment)alignment
{
[self setAlignment:alignment lineBreakMode:TUILineBreakModeWordWrap];
}
- (NSFont *)font
{
return nil;
}
- (TUIColor *)color
{
return nil;
}
- (NSShadow *)shadow
{
return nil;
}
- (TUITextAlignment)alignment
{
return TUITextAlignmentLeft;
}
- (CGFloat)kerning
{
return 0.0;
}
- (CGFloat)lineHeight
{
return 0.0;
}
- (TUIColor *)backgroundColor
{
return nil;
}
- (TUIBackgroundFillStyle)backgroundFillStyle {
return TUIBackgroundFillStyleInline;
}
- (NSString *)text {
return [self string];
}
- (void)setText:(NSString *)text {
text = text ? : @" ";
[self beginEditing];
[self replaceCharactersInRange:NSMakeRange(0, [self length]) withString:[text copy]];
[self endEditing];
}
@end
@implementation NSShadow (TUIAdditions)
+ (NSShadow *)shadowWithRadius:(CGFloat)radius offset:(CGSize)offset color:(TUIColor *)color
{
NSShadow *shadow = [[NSShadow alloc] init];
[shadow setShadowBlurRadius:radius];
[shadow setShadowOffset:offset];
[shadow setShadowColor:[color nsColor]];
return shadow;
}
@end