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https://gitlab.linphone.org/BC/public/linphone-iphone.git
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66 lines
2.8 KiB
Objective-C
Executable file
66 lines
2.8 KiB
Objective-C
Executable file
//
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// DCRoundSwitchOutlineLayer.m
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//
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// Created by Patrick Richards on 29/06/11.
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// MIT License.
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//
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// http://twitter.com/patr
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// http://domesticcat.com.au/projects
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// http://github.com/domesticcatsoftware/DCRoundSwitch
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//
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#import "DCRoundSwitchOutlineLayer.h"
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@implementation DCRoundSwitchOutlineLayer
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- (void)drawInContext:(CGContextRef)context
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{
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// calculate the outline clip
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CGContextSaveGState(context);
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UIBezierPath *switchOutline = [UIBezierPath bezierPathWithRoundedRect:self.bounds cornerRadius:self.bounds.size.height / 2.0];
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CGContextAddPath(context, switchOutline.CGPath);
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CGContextClip(context);
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// inner gloss
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CGContextSaveGState(context);
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CGRect innerGlossPathRect = CGRectMake(self.frame.size.width * 0.05,
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self.frame.size.height / 2.0,
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self.bounds.size.width - (self.frame.size.width * 0.1),
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self.bounds.size.height / 2.0);
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UIBezierPath *innerGlossPath = [UIBezierPath bezierPathWithRoundedRect:innerGlossPathRect
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byRoundingCorners:UIRectCornerTopLeft | UIRectCornerTopRight
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cornerRadii:CGSizeMake(self.bounds.size.height * 0.3, self.bounds.size.height * 0.3)];
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CGContextAddPath(context, innerGlossPath.CGPath);
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CGContextClip(context);
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CGFloat colorStops[2] = {0.0, 1.0};
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CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
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CGFloat innerGlossStartColorComponents[] = {1.0, 1.0, 1.0, 0.14};
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CGFloat innerGlossEndColorComponents[] = {1.0, 1.0, 1.0, 0.50};
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CGColorRef topColor = CGColorCreate(colorSpace, innerGlossStartColorComponents);
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CGColorRef bottomColor = CGColorCreate(colorSpace, innerGlossEndColorComponents);
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CGColorRef colors[] = { topColor, bottomColor };
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CFArrayRef colorsArray = CFArrayCreate(NULL, (const void**)colors, sizeof(colors) / sizeof(CGColorRef), &kCFTypeArrayCallBacks);
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CGGradientRef innerGlossGradient = CGGradientCreateWithColors(colorSpace, colorsArray, colorStops);
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CFRelease(colorsArray);
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CGContextDrawLinearGradient(context, innerGlossGradient, CGPointMake(0, CGRectGetMinY(innerGlossPathRect)), CGPointMake(0, CGRectGetMaxY(innerGlossPathRect)), 0);
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CGContextRestoreGState(context);
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CGColorSpaceRelease(colorSpace);
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CGColorRelease(topColor);
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CGColorRelease(bottomColor);
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CGGradientRelease(innerGlossGradient);
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// outline and inner shadow
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CGContextSetShadowWithColor(context, CGSizeMake(0.0, 1), 2.0, [UIColor colorWithRed:0.1 green:0.1 blue:0.1 alpha:1.0].CGColor);
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CGContextSetLineWidth(context, 0.5);
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UIBezierPath *outlinePath = [UIBezierPath bezierPathWithRoundedRect:CGRectOffset(self.bounds, -0.5, 0.0) cornerRadius:self.bounds.size.height / 2.0];
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CGContextAddPath(context, outlinePath.CGPath);
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CGContextSetStrokeColorWithColor(context, [UIColor colorWithWhite:0.60 alpha:1.0].CGColor);
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CGContextStrokePath(context);
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CGContextAddPath(context, outlinePath.CGPath);
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CGContextStrokePath(context);
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}
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@end
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