init

杨锴

2024-08-14 909e20941e45f8712c012db602034b47da0bfdb0

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//
//  SVRadialGradientLayer.m
//  SVProgressHUD, https://github.com/SVProgressHUD/SVProgressHUD
//
//  Copyright (c) 2014-2023 Tobias Totzek and contributors. All rights reserved.
//
 
#import "SVRadialGradientLayer.h"
 
@implementation SVRadialGradientLayer
 
- (void)drawInContext:(CGContextRef)context {
    size_t locationsCount = 2;
    CGFloat locations[2] = {0.0f, 1.0f};
    CGFloat colors[8] = {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.75f};
    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
    CGGradientRef gradient = CGGradientCreateWithColorComponents(colorSpace, colors, locations, locationsCount);
    CGColorSpaceRelease(colorSpace);
 
    float radius = MIN(self.bounds.size.width , self.bounds.size.height);
    CGContextDrawRadialGradient (context, gradient, self.gradientCenter, 0, self.gradientCenter, radius, kCGGradientDrawsAfterEndLocation);
    CGGradientRelease(gradient);
}
 
@end