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[AsyncDisplayKit+Utilities.h] Convenience methods for creating resizable circles & rounded rects. (#1811)

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* [AsyncDisplayKit+Utilities.h] UIImage category for performant (optionally rounded) flat color stretchable images

* treat clear background color as no background color (D99117)

* add borderWidth

* add several shorter methods per Scott's comment

* rename files and add to AsyncDisplayKit.h

* fix xcode project file

* update commentse
This commit is contained in:
Hannah Troisi
2016-07-04 16:34:16 -07:00
committed by appleguy
parent 3763df1f06
commit 682ddcfe51
4 changed files with 220 additions and 4 deletions
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71
AsyncDisplayKit/UIImage+ASConvenience.h Normal file
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//
// UIImage+ASConvenience.h
// AsyncDisplayKit
//
// Created by Hannah Troisi on 6/24/16.
//
// Copyright (c) 2014-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/UIImage.h>
#import <UIKit/UIBezierPath.h>
// High-performance flat-colored, rounded-corner resizable images
//
// For "Baked-in Opaque" corners, set cornerColor equal to the color behind the rounded image object, e.g. the background color.
// For "Baked-in Alpha" corners, set cornerColor = [UIColor clearColor]
//
// See http://asyncdisplaykit.org/docs/corner-rounding.html for an explanation.
@interface UIImage (ASDKAdditions)
/**
* This generates a flat-color, rounded-corner resizeable image
*
* @param cornerRadius The radius of the rounded-corner
* @param cornerColor The fill color of the corners (For Alpha corners use clearColor)
* @param fillColor The fill color of the rounded-corner image
*/
+ (UIImage *)as_resizableRoundedImageWithCornerRadius:(CGFloat)cornerRadius
cornerColor:(UIColor *)cornerColor
fillColor:(UIColor *)fillColor;
/**
* This generates a flat-color, rounded-corner resizeable image with a border
*
* @param cornerRadius The radius of the rounded-corner
* @param cornerColor The fill color of the corners (For Alpha corners use clearColor)
* @param fillColor The fill color of the rounded-corner image
* @param borderColor The border color. Set to nil for no border.
* @param borderWidth The border width. Dummy value if borderColor = nil.
*/
+ (UIImage *)as_resizableRoundedImageWithCornerRadius:(CGFloat)cornerRadius
cornerColor:(UIColor *)cornerColor
fillColor:(UIColor *)fillColor
borderColor:(UIColor *)borderColor
borderWidth:(CGFloat)borderWidth;
/**
* This generates a flat-color, rounded-corner resizeable image with a border
*
* @param cornerRadius The radius of the rounded-corner
* @param cornerColor The fill color of the corners (For Alpha corners use clearColor)
* @param fillColor The fill color of the rounded-corner image
* @param borderColor The border color. Set to nil for no border.
* @param borderWidth The border width. Dummy value if borderColor = nil.
* @param roundedCorners Select individual or multiple corners to round. Set to UIRectCornerAllCorners to round all 4 corners.
* @param scale The number of pixels per point. Provide 0.0 to use the screen scale.
*/
+ (UIImage *)as_resizableRoundedImageWithCornerRadius:(CGFloat)cornerRadius
cornerColor:(UIColor *)cornerColor
fillColor:(UIColor *)fillColor
borderColor:(UIColor *)borderColor
borderWidth:(CGFloat)borderWidth
roundedCorners:(UIRectCorner)roundedCorners
scale:(CGFloat)scale;
@end