mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-09-08 13:42:51 +00:00
47 lines
1.8 KiB
Objective-C
47 lines
1.8 KiB
Objective-C
/* Copyright (c) 2014-present, Facebook, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under the BSD-style license found in the
|
|
* LICENSE file in the root directory of this source tree. An additional grant
|
|
* of patent rights can be found in the PATENTS file in the same directory.
|
|
*/
|
|
|
|
#import <Foundation/Foundation.h>
|
|
#import "ASTextKitAttributes.h"
|
|
#import "ASTextKitContext.h"
|
|
|
|
@interface ASTextKitFontSizeAdjuster : NSObject
|
|
|
|
@property (nonatomic, assign) CGSize constrainedSize;
|
|
|
|
/**
|
|
* Creates a class that will return a scale factor the will make a string fit inside the constrained size.
|
|
*
|
|
* "Fitting" means that both the longest word in the string will fit without breaking in the constrained
|
|
* size's width AND that the entire string will try to fit within attribute's maximumLineCount. The amount
|
|
* that the string will scale is based upon the attribute's pointSizeScaleFactors. If the string cannot fit
|
|
* in the given width/number of lines, the smallest scale factor will be returned.
|
|
*
|
|
* @param context The text kit context
|
|
* @param constrainedSize The constrained size to render into
|
|
* @param textComponentAttributes The renderer's text attributes
|
|
*/
|
|
- (instancetype)initWithContext:(ASTextKitContext *)context
|
|
constrainedSize:(CGSize)constrainedSize
|
|
textKitAttributes:(const ASTextKitAttributes &)textComponentAttributes;
|
|
|
|
/**
|
|
* Returns the best fit scale factor for the text
|
|
*/
|
|
- (CGFloat)scaleFactor;
|
|
|
|
/**
|
|
* Takes all of the attributed string attributes dealing with size (font size, line spacing, kerning, etc) and
|
|
* scales them by the scaleFactor. I wouldn't be surprised if I missed some in here.
|
|
*/
|
|
+ (void)adjustFontSizeForAttributeString:(NSMutableAttributedString *)attrString withScaleFactor:(CGFloat)scaleFactor;
|
|
|
|
@end
|
|
|
|
|