react-native/Libraries/ART/ARTTextFrame.h

24 lines
835 B
Objective-C

/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#import <CoreText/CoreText.h>
// A little helper to make sure we have a set of lines including width ready for use.
// We assume that we will only this in one place so no reference counting is necessary.
// Needs to be freed when deallocated.
// This is fragile since this relies on these values not getting reused. Consider
// wrapping these in an Obj-C class or some ARC hackery to get refcounting.
typedef struct {
size_t count;
CGFloat baseLine; // Distance from the origin to the base line of the first line
CGFloat lineHeight; // Distance between lines
CTLineRef *lines;
CGFloat *widths; // Width of each line
} ARTTextFrame;