[控件] AngleGradientView

AngleGradientView

效果

说明

1. 用源码产生带环形渐变色的view

2. 可以配合maskView一起使用 (上图中的右下角图片的效果)

源码

https://github.com/YouXianMing/GradientLayerView

https://github.com/paiv/AngleGradientLayer

//
//  AngleGradientView.h
//  GradientLayer
//
//  Created by YouXianMing on 15/5/15.
//  Copyright (c) 2015年 YouXianMing. All rights reserved.
//

#import <UIKit/UIKit.h>

typedef enum : NSUInteger {

    /**
     *  金属风格
     */
    GradientMetalTypeOne,
    GradientMetalTypeTwo,

    /**
     *  彩虹风格
     */
    GradientRainbow,

    test,

} EAngleGradientType;

@interface AngleGradientView : UIView

/**
 *  返回带环形渐变颜色的view
 *
 *  @param frame     尺寸
 *  @param colors    颜色数组(CGColor)
 *  @param locations 颜色分割点数组(范围取值为[0, 1], 渐变递增,需要包含0与1这两个点)
 *
 *  @return 创建好的带环形渐变的view
 */
- (instancetype)initWithFrame:(CGRect)frame
                 withCGColors:(NSArray *)colors
                withLocations:(NSArray *)locations;

/**
 *  便利构造器,便捷的创建出指定风格的渐变环形的view
 *
 *  @param frame 尺寸
 *  @param type  指定的风格
 *
 *  @return 创建好的带环形渐变的view
 */
+ (instancetype)gradientViewWithFrame:(CGRect)frame
                         gradientType:(EAngleGradientType)type;

@end

//
//  AngleGradientView.m
//  GradientLayer
//
//  Created by YouXianMing on 15/5/15.
//  Copyright (c) 2015年 YouXianMing. All rights reserved.
//

#import "AngleGradientView.h"
#import "AngleGradientLayer.h"

@interface AngleGradientView () {

    AngleGradientLayer  *_angleGradientLayer;

}

@end

@implementation AngleGradientView

/**
 *  重置layer为AngleGradientLayer
 */
+ (Class)layerClass {
    return [AngleGradientLayer class];
}

- (instancetype)initWithFrame:(CGRect)frame {
    return [self initWithFrame:frame withCGColors:nil withLocations:nil];
}

- (instancetype)initWithFrame:(CGRect)frame withCGColors:(NSArray *)colors withLocations:(NSArray *)locations {

    self = [super initWithFrame:frame];
    if (self) {
        _angleGradientLayer = (AngleGradientLayer *)self.layer;

        if (colors != nil) {
            _angleGradientLayer.colors    = colors;
            _angleGradientLayer.locations = locations;
        }

    }

    return self;
}

+ (instancetype)gradientViewWithFrame:(CGRect)frame
                         gradientType:(EAngleGradientType)type {

    NSMutableArray    *colors            = nil;
    NSMutableArray    *locations         = nil;
    AngleGradientView *angleGradientView = nil;

    if (type == GradientMetalTypeOne) {

        colors = [[NSMutableArray alloc] initWithCapacity:16];
        [colors addObject:(id)[UIColor colorWithWhite:0.65 alpha:1].CGColor];
        [colors addObject:(id)[UIColor colorWithWhite:0.9 alpha:1].CGColor];
        [colors addObject:(id)[UIColor colorWithWhite:0.75 alpha:1].CGColor];
        [colors addObject:(id)[UIColor colorWithWhite:0.35 alpha:1].CGColor];
        [colors addObject:(id)[UIColor colorWithWhite:0.75 alpha:1].CGColor];
        [colors addObject:(id)[UIColor colorWithWhite:0.9 alpha:1].CGColor];
        [colors addObject:(id)[UIColor colorWithWhite:0.75 alpha:1].CGColor];
        [colors addObject:(id)[UIColor colorWithWhite:0.35 alpha:1].CGColor];
        [colors addObject:(id)[UIColor colorWithWhite:0.55 alpha:1].CGColor];
        [colors addObject:(id)[UIColor colorWithWhite:0.65 alpha:1].CGColor];

    } else if (type == GradientMetalTypeTwo) {

        colors    = [[NSMutableArray alloc] initWithCapacity:16];
        locations = [[NSMutableArray alloc] initWithCapacity:16];
        [colors addObject:(id)[UIColor colorWithRed:0 green:0 blue:0 alpha:1].CGColor];
        [colors addObject:(id)[UIColor colorWithRed:1 green:1 blue:1 alpha:1].CGColor];
        [locations addObject:[NSNumber numberWithInt:0]];
        [locations addObject:[NSNumber numberWithInt:1]];

    } else if (type == GradientRainbow) {

        colors = [[NSMutableArray alloc] initWithCapacity:16];
        [colors addObject:(id)[UIColor colorWithRed:1 green:0 blue:0 alpha:1].CGColor];
        [colors addObject:(id)[UIColor colorWithRed:1 green:1 blue:0 alpha:1].CGColor];
        [colors addObject:(id)[UIColor colorWithRed:0 green:1 blue:0 alpha:1].CGColor];
        [colors addObject:(id)[UIColor colorWithRed:0 green:1 blue:1 alpha:1].CGColor];
        [colors addObject:(id)[UIColor colorWithRed:0 green:0 blue:1 alpha:1].CGColor];
        [colors addObject:(id)[UIColor colorWithRed:1 green:0 blue:1 alpha:1].CGColor];
        [colors addObject:(id)[UIColor colorWithRed:1 green:0 blue:0 alpha:1].CGColor];

    }

    angleGradientView = [[AngleGradientView alloc] initWithFrame:frame
                                                    withCGColors:colors
                                                   withLocations:locations];

    return angleGradientView;
}

@end