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8897614f0e
* Initial commit for adding a size constraint to ASLayoutable's * Some more commits * Fix sample projects in extra/ * Remove preferredFrameSize test of ASEditableTextNode * Remove preferredFrameSize from examples_extra * Add deprecation warning to -[ASDisplayNode preferredFrameSize] * Add deprecation warning to -[ASDisplayNode measureWithSizeRange:] * Commit * Commit * Remove ASRelativeSizeRange * Make ASRelativeSize private * Adjust examples * Improve setting of -[ASLayoutable size] with points or fractions * Add ASWrapperLayoutSpec * Improve creation of ASRelativeDimension * Add `preferredFrameSize` back and add deprecated logging * Add `layoutSpecBlock` setter and getter and add locking for it * Add better documentation and fix macros to create ASRelativeDimension * Create new ASSizeRangeMake with just a CGSize as parameter * Update Kitten and Social App Layout example * Add layoutThatFits: and deprecate measure: * Rename ASRelativeDimension to ASDimension * Fix examples for ASDimension renaming * Remove fancy height and width setter * Fix ASDimension helper * Rename -[ASLayout layoutableObject] to -[ASLayout layoutable] * Update layout related methods and more clearer documentation around how to use it * Deprecate old ASLayout class constructors * Don't unnecessary recalculate layout if constrained or parent size did not change * Use shared pointer for ASDisplayNodeLayout * Fix rebase conflicts * Add documentation and move implementation in mm file of ASDisplayNodeLayout * Fix test errors * Rename ASSize to ASLayoutableSize * Address comments * Rename setSizeFromCGSize to setSizeWithCGSize * Improve inline functions in ASDimension * Fix rebase conflicts
70 lines
2.8 KiB
Objective-C
70 lines
2.8 KiB
Objective-C
//
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// ASTextKitComponents.m
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// AsyncDisplayKit
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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//
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#import "ASTextKitComponents.h"
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@interface ASTextKitComponents ()
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// read-write redeclarations
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@property (nonatomic, strong, readwrite) NSTextStorage *textStorage;
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@property (nonatomic, strong, readwrite) NSTextContainer *textContainer;
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@property (nonatomic, strong, readwrite) NSLayoutManager *layoutManager;
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@end
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@implementation ASTextKitComponents
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+ (instancetype)componentsWithAttributedSeedString:(NSAttributedString *)attributedSeedString
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textContainerSize:(CGSize)textContainerSize
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{
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NSTextStorage *textStorage = attributedSeedString ? [[NSTextStorage alloc] initWithAttributedString:attributedSeedString] : [[NSTextStorage alloc] init];
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return [self componentsWithTextStorage:textStorage
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textContainerSize:textContainerSize
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layoutManager:[[NSLayoutManager alloc] init]];
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}
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+ (instancetype)componentsWithTextStorage:(NSTextStorage *)textStorage
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textContainerSize:(CGSize)textContainerSize
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layoutManager:(NSLayoutManager *)layoutManager
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{
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ASTextKitComponents *components = [[self alloc] init];
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components.textStorage = textStorage;
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components.layoutManager = layoutManager;
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[components.textStorage addLayoutManager:components.layoutManager];
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components.textContainer = [[NSTextContainer alloc] initWithSize:textContainerSize];
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components.textContainer.lineFragmentPadding = 0.0; // We want the text laid out up to the very edges of the text-view.
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[components.layoutManager addTextContainer:components.textContainer];
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return components;
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}
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- (CGSize)sizeForConstrainedWidth:(CGFloat)constrainedWidth
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{
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ASTextKitComponents *components = self;
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// If our text-view's width is already the constrained width, we can use our existing TextKit stack for this sizing calculation.
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// Otherwise, we create a temporary stack to size for `constrainedWidth`.
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if (CGRectGetWidth(components.textView.bounds) != constrainedWidth) {
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components = [ASTextKitComponents componentsWithAttributedSeedString:components.textStorage textContainerSize:CGSizeMake(constrainedWidth, CGFLOAT_MAX)];
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}
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// Force glyph generation and layout, which may not have happened yet (and isn't triggered by -usedRectForTextContainer:).
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[components.layoutManager ensureLayoutForTextContainer:components.textContainer];
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CGSize textSize = [components.layoutManager usedRectForTextContainer:components.textContainer].size;
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return textSize;
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}
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@end
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