RCTBorderDrawing.h
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/**
* Copyright (c) 2015-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 <UIKit/UIKit.h>
#import <React/RCTBorderStyle.h>
typedef struct {
CGFloat topLeft;
CGFloat topRight;
CGFloat bottomLeft;
CGFloat bottomRight;
} RCTCornerRadii;
typedef struct {
CGSize topLeft;
CGSize topRight;
CGSize bottomLeft;
CGSize bottomRight;
} RCTCornerInsets;
typedef struct {
CGColorRef top;
CGColorRef left;
CGColorRef bottom;
CGColorRef right;
} RCTBorderColors;
/**
* Determine if the border widths, colors and radii are all equal.
*/
BOOL RCTBorderInsetsAreEqual(UIEdgeInsets borderInsets);
BOOL RCTCornerRadiiAreEqual(RCTCornerRadii cornerRadii);
BOOL RCTBorderColorsAreEqual(RCTBorderColors borderColors);
/**
* Convert RCTCornerRadii to RCTCornerInsets by applying border insets.
* Effectively, returns radius - inset, with a lower bound of 0.0.
*/
RCTCornerInsets RCTGetCornerInsets(RCTCornerRadii cornerRadii,
UIEdgeInsets borderInsets);
/**
* Create a CGPath representing a rounded rectangle with the specified bounds
* and corner insets. Note that the CGPathRef must be released by the caller.
*/
CGPathRef RCTPathCreateWithRoundedRect(CGRect bounds,
RCTCornerInsets cornerInsets,
const CGAffineTransform *transform);
/**
* Draw a CSS-compliant border as an image. You can determine if it's scalable
* by inspecting the image's `capInsets`.
*
* `borderInsets` defines the border widths for each edge.
*/
UIImage *RCTGetBorderImage(RCTBorderStyle borderStyle,
CGSize viewSize,
RCTCornerRadii cornerRadii,
UIEdgeInsets borderInsets,
RCTBorderColors borderColors,
CGColorRef backgroundColor,
BOOL drawToEdge);