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35d7f43fb6
ARC doesn't play nicely with structs that contain references to Objective-C objects, which causes breakage when using AsyncDisplayKit as a dynamic framework (e.g., with CocoaPods 0.36+). Fixes #198.
48 lines
2.1 KiB
Plaintext
48 lines
2.1 KiB
Plaintext
/* Copyright (c) 2014-present, Facebook, Inc.
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* All rights reserved.
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*
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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 "ASTextNodeTextKitHelpers.h"
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@implementation ASTextKitComponents
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@end
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#pragma mark - Convenience
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CGSize ASTextKitComponentsSizeForConstrainedWidth(ASTextKitComponents *components, CGFloat constrainedWidth)
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{
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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 = ASTextKitComponentsCreate(components.textStorage, CGSizeMake(constrainedWidth, FLT_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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ASTextKitComponents *ASTextKitComponentsCreate(NSAttributedString *attributedSeedString, CGSize textContainerSize)
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{
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ASTextKitComponents *components = [[ASTextKitComponents alloc] init];
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// Create the TextKit component stack with our default configuration.
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components.textStorage = (attributedSeedString ? [[NSTextStorage alloc] initWithAttributedString:attributedSeedString] : [[NSTextStorage alloc] init]);
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components.layoutManager = [[NSLayoutManager alloc] init];
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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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