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https://gitlab.linphone.org/BC/public/linphone-iphone.git
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102 lines
3.4 KiB
Objective-C
Executable file
102 lines
3.4 KiB
Objective-C
Executable file
//
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// DCRoundSwitchToggleLayer.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 "DCRoundSwitchToggleLayer.h"
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@implementation DCRoundSwitchToggleLayer
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@synthesize onString, offString, onTintColor;
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@synthesize drawOnTint;
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@synthesize clip;
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@synthesize labelFont;
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- (void)dealloc
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{
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[onString release];
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[offString release];
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[onTintColor release];
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[super dealloc];
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}
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- (id)initWithOnString:(NSString *)anOnString offString:(NSString *)anOffString onTintColor:(UIColor *)anOnTintColor
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{
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if ((self = [super init]))
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{
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self.onString = anOnString;
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self.offString = anOffString;
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self.onTintColor = anOnTintColor;
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}
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return self;
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}
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- (UIFont *)labelFont
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{
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return [UIFont boldSystemFontOfSize:ceilf(self.bounds.size.height * .6)];
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}
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- (void)drawInContext:(CGContextRef)context
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{
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CGFloat knobRadius = self.bounds.size.height - 2.0;
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CGFloat knobCenter = self.bounds.size.width / 2.0;
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CGRect knobRect = CGRectMake(knobCenter - knobRadius / 2.0, 1.0, knobRadius, knobRadius);
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if (self.clip)
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{
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UIBezierPath *bezierPath = [UIBezierPath bezierPathWithRoundedRect:CGRectMake(-self.frame.origin.x + 0.5, 0, self.bounds.size.width / 2.0 + self.bounds.size.height / 2.0 - 1.5, self.bounds.size.height) cornerRadius:self.bounds.size.height / 2.0];
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CGContextAddPath(context, bezierPath.CGPath);
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CGContextClip(context);
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}
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// on tint color
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if (self.drawOnTint)
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{
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CGContextSetFillColorWithColor(context, self.onTintColor.CGColor);
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CGContextFillRect(context, CGRectMake(0, 0, knobCenter, self.bounds.size.height));
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}
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// off tint color (white)
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CGContextSetFillColorWithColor(context, [UIColor colorWithWhite:0.963 alpha:1.0].CGColor);
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CGContextFillRect(context, CGRectMake(knobCenter, 0, self.bounds.size.width - knobCenter, self.bounds.size.height));
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// knob shadow
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CGContextSetShadowWithColor(context, CGSizeMake(0, 0), 1.5, [UIColor colorWithWhite:0.2 alpha:1.0].CGColor);
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CGContextSetStrokeColorWithColor(context, [UIColor colorWithWhite:0.42 alpha:1.0].CGColor);
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CGContextSetLineWidth(context, 1.0);
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CGContextStrokeEllipseInRect(context, knobRect);
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CGContextSetShadowWithColor(context, CGSizeMake(0, 0), 0, NULL);
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// strings
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CGFloat textSpaceWidth = (self.bounds.size.width / 2) - (knobRadius / 2);
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UIGraphicsPushContext(context);
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// 'ON' state label (self.onString)
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CGSize onTextSize = [self.onString sizeWithFont:self.labelFont];
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CGPoint onTextPoint = CGPointMake((textSpaceWidth - onTextSize.width) / 2.0 + knobRadius * .15, floorf((self.bounds.size.height - onTextSize.height) / 2.0) + 1.0);
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[[UIColor colorWithWhite:0.45 alpha:1.0] set]; // .2 & .4
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[self.onString drawAtPoint:CGPointMake(onTextPoint.x, onTextPoint.y - 1.0) withFont:self.labelFont];
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[[UIColor whiteColor] set];
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[self.onString drawAtPoint:onTextPoint withFont:self.labelFont];
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// 'OFF' state label (self.offString)
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CGSize offTextSize = [self.offString sizeWithFont:self.labelFont];
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CGPoint offTextPoint = CGPointMake(textSpaceWidth + (textSpaceWidth - offTextSize.width) / 2.0 + knobRadius * .86, floorf((self.bounds.size.height - offTextSize.height) / 2.0) + 1.0);
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[[UIColor whiteColor] set];
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[self.offString drawAtPoint:CGPointMake(offTextPoint.x, offTextPoint.y + 1.0) withFont:self.labelFont];
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[[UIColor colorWithWhite:0.52 alpha:1.0] set];
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[self.offString drawAtPoint:offTextPoint withFont:self.labelFont];
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UIGraphicsPopContext();
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}
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@end
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