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- // Copyright 2014 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #ifndef UI_GFX_IOS_NSSTRING_CRSTRINGDRAWING_H_
- #define UI_GFX_IOS_NSSTRING_CRSTRINGDRAWING_H_
- #import <UIKit/UIKit.h>
- @interface NSString (CrStringDrawing)
- // Calculates and returns the bounding rect for the receiver drawn using the
- // given size and font.
- // This method is implemented as a wrapper around
- // |boundingRectWithSize:options:attributes:context:| using the following values
- // for the parameters:
- // - size: the provided |size|
- // - options: NSStringDrawingUsesLineFragmentOrigin
- // - attributes: a NSDictionary with the provided |font|
- // - context: nil.
- //
- // Note that the rect returned may contain fractional values.
- - (CGRect)cr_boundingRectWithSize:(CGSize)size
- font:(UIFont*)font;
- // Convenience wrapper to just return the size of |boundingRectWithSize:font:|.
- //
- // Note that the size returned may contain fractional values.
- - (CGSize)cr_boundingSizeWithSize:(CGSize)size
- font:(UIFont*)font;
- // Returns the size of the string if it were to be rendered with the specified
- // font on a single line. The width and height of the CGSize returned are
- // pixel-aligned.
- //
- // This method is a convenience wrapper around sizeWithAttributes: to avoid
- // boilerplate required to put |font| in a dictionary of attributes. Do not pass
- // nil into this method.
- - (CGSize)cr_pixelAlignedSizeWithFont:(UIFont*)font;
- // Deprecated: Use cr_pixelAlignedSizeWithFont: or sizeWithAttributes:
- // Provides a drop-in replacement for sizeWithFont:, which was deprecated in iOS
- // 7 in favor of -sizeWithAttributes:. Specifically, this method will return
- // CGSizeZero if |font| is nil, and the width and height returned are rounded up
- // to integer values.
- // TODO(lliabraa): This method was added to ease the transition off of the
- // deprecated sizeWithFont: method. New call sites should not be added and
- // existing call sites should be audited to determine the correct behavior for
- // nil |font| and rounding, then replaced with cr_pixelAlignedSizeWithFont: or
- // sizeWithAttributes: (crbug.com/364419).
- - (CGSize)cr_sizeWithFont:(UIFont*)font;
- // If |index| is 0, returns an empty string.
- // If |index| is >= than self.length, returns self.
- // Otherwise, returns string cut to have |index| characters with an
- // ellipsis at the end.
- - (NSString*)cr_stringByCuttingToIndex:(NSUInteger)index;
- // Returns an elided version of string that fits in |bounds|.
- // System font of Label size is used for determining the string drawing size.
- - (NSString*)cr_stringByElidingToFitSize:(CGSize)bounds;
- @end
- #endif // UI_GFX_IOS_NSSTRING_CRSTRINGDRAWING_H_
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