22// ColumnView.m
33// Columns
44//
5- // Created by Rob Napier on 8/26/11.
6- // Copyright (c) 2011 __MyCompanyName__. All rights reserved.
5+ // Copyright (c) 2012 Rob Napier
6+ //
7+ // This code is licensed under the MIT License:
8+ //
9+ // Permission is hereby granted, free of charge, to any person obtaining a
10+ // copy of this software and associated documentation files (the "Software"),
11+ // to deal in the Software without restriction, including without limitation
12+ // the rights to use, copy, modify, merge, publish, distribute, sublicense,
13+ // and/or sell copies of the Software, and to permit persons to whom the
14+ // Software is furnished to do so, subject to the following conditions:
15+ //
16+ // The above copyright notice and this permission notice shall be included in
17+ // all copies or substantial portions of the Software.
18+ //
19+ // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20+ // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21+ // FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
22+ // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23+ // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
24+ // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25+ // DEALINGS IN THE SOFTWARE.
726//
827
928#import " ColumnView.h"
1029#import < CoreText/CoreText.h>
1130
1231static const CFIndex kColumnCount = 3 ;
1332
14- @interface CustomTextPosition : UITextPosition
15- @property (nonatomic , readwrite , assign ) NSUInteger index;
16- + (CustomTextPosition *)textPositionForIndex : (NSUInteger )index ;
17- - (NSRange )rangeToPosition : (CustomTextPosition *)position ;
18- @end
19-
20- @implementation CustomTextPosition
21- + (CustomTextPosition *)textPositionForIndex : (NSUInteger )index {
22- CustomTextPosition *position = [CustomTextPosition new ];
23- position.index = index ;
24- return position;
25- }
26-
27- - (NSRange )rangeToPosition : (CustomTextPosition *)position {
28- return NSMakeRange (self.index , position.index - position.index );
29- }
30- @end
31-
32- @interface CustomTextRange : UITextRange
33- @property (nonatomic , readwrite , )
34- - (NSRange )range ;
35- @end
36-
37- @implementation CustomTextRange
38- - (NSRange )range {
39- return [(CustomTextPosition *)(self .start) rangeToPosition: (CustomTextPosition *)(self .end)];
40- }
41- @end
42-
43-
4433@interface ColumnView ()
45- @property (nonatomic , readwrite , strong ) NSMutableAttributedString *storage;
4634@property (nonatomic , readwrite , assign ) CFIndex mode;
4735@end
4836
@@ -164,39 +152,27 @@ - (id)initWithFrame:(CGRect)frame {
164152 // Flip the view's context. Core Text runs bottom to top, even
165153 // on iPad, and the view is much simpler if we do everything in
166154 // Mac coordinates.
167- // CGAffineTransform transform = CGAffineTransformMakeScale(1, -1);
168- // CGAffineTransformTranslate(transform, 0, -self.bounds.size.height);
169- // self.transform = transform;
155+ CGAffineTransform transform = CGAffineTransformMakeScale (1 , -1 );
156+ CGAffineTransformTranslate (transform, 0 , -self.bounds .size .height );
157+ self.transform = transform;
170158 self.backgroundColor = [UIColor whiteColor ];
171159 }
172160 return self;
173161}
174162
175- - (NSAttributedString *)attributedText {
176- return [self .storage copy ];
177- }
178-
179- - (void )setAttributedText : (NSAttributedString *)attributedText {
180- _storage = [attributedText mutableCopy ];
181- }
182-
183163- (void )drawRect : (CGRect )rect
184164{
185- if (self.storage == nil )
165+ if (self.attributedString == nil )
186166 {
187167 return ;
188168 }
189169
170+ // Initialize the context (always initialize your text matrix)
190171 CGContextRef context = UIGraphicsGetCurrentContext ();
191-
192- // Flip the context (and always initialize your text matrix)
193- CGContextSetTextMatrix ( context, CGAffineTransformIdentity );
194- CGContextTranslateCTM ( context, rect.origin .x , rect.origin .y );
195- CGContextScaleCTM ( context, 1 .0f , -1 .0f );
196- CGContextTranslateCTM ( context, rect.origin .x , - ( rect.origin .y + rect.size .height ) );
197-
172+ CGContextSetTextMatrix (context, CGAffineTransformIdentity );
173+
198174 CFAttributedStringRef
199- attrString = (__bridge CFTypeRef )self.storage ;
175+ attrString = (__bridge CFTypeRef )self.attributedString ;
200176
201177 CTFramesetterRef
202178 framesetter = CTFramesetterCreateWithAttributedString (attrString);
@@ -222,81 +198,9 @@ - (void)drawRect:(CGRect)rect
222198 CFRelease (framesetter);
223199}
224200
225- // - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
226- // self.mode = (self.mode + 1 ) % 4;
227- // [self setNeedsDisplay];
228- // }
229-
230- #pragma mark UITextInput
231- - (NSString *)textInRange : (UITextRange *)range
232- {
233- return [self .storage.string substringWithRange: range.range];
234- }
235-
236- - (void )replaceRange : (UITextRange *)range withText : (NSString *)text
237- {
238- [self .storage replaceCharactersInRange: range.range withString: text];
239- }
240-
241- // @property (readwrite, copy) UITextRange *selectedTextRange;
242- //
243- // /* If text can be selected, it can be marked. Marked text represents provisionally
244- // * inserted text that has yet to be confirmed by the user. It requires unique visual
245- // * treatment in its display. If there is any marked text, the selection, whether a
246- // * caret or an extended range, always resides witihin.
247- // *
248- // * Setting marked text either replaces the existing marked text or, if none is present,
249- // * inserts it from the current selection. */
250- //
251- // @property (nonatomic, readonly) UITextRange *markedTextRange; // Nil if no marked text.
252- // @property (nonatomic, copy) NSDictionary *markedTextStyle; // Describes how the marked text should be drawn.
253-
254- // - (void)setMarkedText:(NSString *)markedText selectedRange:(NSRange)selectedRange; // selectedRange is a range within the markedText
255- // - (void)unmarkText;
256- //
257- // /* The end and beginning of the the text document. */
258- - (UITextPosition *)beginningOfDocument {
259- return [CustomTextPosition textPositionForIndex: 0 ];
260- }
261-
262- - (UITextPosition *)endOfDocument {
263- return [CustomTextPosition textPositionForIndex: self .attributedText.length];
201+ - (void )touchesEnded : (NSSet *)touches withEvent : (UIEvent *)event {
202+ self.mode = (self.mode + 1 ) % 4 ;
203+ [self setNeedsDisplay ];
264204}
265205
266- - (UITextRange *)textRangeFromPosition : (UITextPosition *)fromPosition toPosition : (UITextPosition *)toPosition {
267- // - (UITextPosition *)positionFromPosition:(UITextPosition *)position offset:(NSInteger)offset;
268- // - (UITextPosition *)positionFromPosition:(UITextPosition *)position inDirection:(UITextLayoutDirection)direction offset:(NSInteger)offset;
269- //
270- // /* Simple evaluation of positions */
271- // - (NSComparisonResult)comparePosition:(UITextPosition *)position toPosition:(UITextPosition *)other;
272- // - (NSInteger)offsetFromPosition:(UITextPosition *)from toPosition:(UITextPosition *)toPosition;
273- //
274- // /* A system-provied input delegate is assigned when the system is interested in input changes. */
275- // @property (nonatomic, assign) id <UITextInputDelegate> inputDelegate;
276- //
277- // /* A tokenizer must be provided to inform the text input system about text units of varying granularity. */
278- // @property (nonatomic, readonly) id <UITextInputTokenizer> tokenizer;
279- //
280- // /* Layout questions. */
281- // - (UITextPosition *)positionWithinRange:(UITextRange *)range farthestInDirection:(UITextLayoutDirection)direction;
282- // - (UITextRange *)characterRangeByExtendingPosition:(UITextPosition *)position inDirection:(UITextLayoutDirection)direction;
283- //
284- // /* Writing direction */
285- // - (UITextWritingDirection)baseWritingDirectionForPosition:(UITextPosition *)position inDirection:(UITextStorageDirection)direction;
286- // - (void)setBaseWritingDirection:(UITextWritingDirection)writingDirection forRange:(UITextRange *)range;
287- //
288- // /* Geometry used to provide, for example, a correction rect. */
289- // - (CGRect)firstRectForRange:(UITextRange *)range;
290- // - (CGRect)caretRectForPosition:(UITextPosition *)position;
291- // - (NSArray *)selectionRectsForRange:(UITextRange *)range NS_AVAILABLE_IOS(6_0); // Returns an array of UITextSelectionRects
292- //
293- // /* Hit testing. */
294- // - (UITextPosition *)closestPositionToPoint:(CGPoint)point;
295- // - (UITextPosition *)closestPositionToPoint:(CGPoint)point withinRange:(UITextRange *)range;
296- // - (UITextRange *)characterRangeAtPoint:(CGPoint)point;
297- //
298- //
299- // @end
300-
301-
302206@end
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