131 lines
4.1 KiB
Objective-C
131 lines
4.1 KiB
Objective-C
/*
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* QRCodeReaderViewController
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*
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* Copyright 2014-present Yannick Loriot.
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* http://yannickloriot.com
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*/
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#import "QRToggleTorchButton.h"
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@implementation QRToggleTorchButton
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- (id)initWithFrame:(CGRect)frame
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{
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if ((self = [super initWithFrame:frame])) {
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_edgeColor = [UIColor whiteColor];
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_fillColor = [UIColor darkGrayColor];
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_edgeHighlightedColor = [UIColor whiteColor];
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_fillHighlightedColor = [UIColor blackColor];
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}
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return self;
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}
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- (void)drawRect:(CGRect)rect
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{
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// Colors
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UIColor *paintColor = (self.state != UIControlStateHighlighted) ? _fillColor : _fillHighlightedColor;
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UIColor *strokeColor = (self.state != UIControlStateHighlighted) ? _edgeColor : _edgeHighlightedColor;
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// Torch box
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CGFloat width = rect.size.width;
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CGFloat height = rect.size.height;
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CGFloat centerX = width / 2;
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CGFloat centerY = height / 2;
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CGFloat strokeLineWidth = 2;
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CGFloat circleRadius = width / 10;
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CGFloat lineLength = width / 10;
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CGFloat lineOffset = width / 10;
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CGFloat lineOriginFromCenter = circleRadius + lineOffset;
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//Circle
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UIBezierPath *circlePath = [UIBezierPath bezierPath];
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[circlePath addArcWithCenter:CGPointMake(centerX, centerY) radius:circleRadius startAngle:0.0 endAngle:M_PI clockwise:YES];
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[circlePath addArcWithCenter:CGPointMake(centerX, centerY) radius:circleRadius startAngle:M_PI endAngle:M_PI * 2 clockwise:YES];
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// Draw beams
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[paintColor setFill];
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for (int i = 0; i < 8; i++) {
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CGFloat angle = ((2 * M_PI) / 8) * i;
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CGPoint startPoint = CGPointMake(centerX + cos(angle) * lineOriginFromCenter, centerY + sin(angle) * lineOriginFromCenter);
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CGPoint endPoint = CGPointMake(centerX + cos(angle) * (lineOriginFromCenter + lineLength), centerY + sin(angle) * (lineOriginFromCenter + lineLength));
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UIBezierPath *beamPath = [self linePathWithStartPoint:startPoint endPoint:endPoint thickness:strokeLineWidth];
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[beamPath stroke];
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}
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// Draw circle
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[strokeColor setFill];
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circlePath.lineWidth = strokeLineWidth;
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[circlePath fill];
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[circlePath stroke];
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}
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- (UIBezierPath *)linePathWithStartPoint:(CGPoint)startPoint endPoint:(CGPoint)endPoint thickness:(CGFloat)thickness {
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UIBezierPath *linePath = [UIBezierPath bezierPath];
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[linePath moveToPoint:startPoint];
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[linePath addLineToPoint:endPoint];
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linePath.lineCapStyle = kCGLineCapRound;
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linePath.lineWidth = thickness;
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return linePath;
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}
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// MARK: - UIResponder Methods
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- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
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{
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[super touchesBegan:touches withEvent:event];
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[self setNeedsDisplay];
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}
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- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
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{
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[super touchesMoved:touches withEvent:event];
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[self setNeedsDisplay];
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}
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- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
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{
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[super touchesEnded:touches withEvent:event];
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[self setNeedsDisplay];
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}
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- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
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{
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[super touchesCancelled:touches withEvent:event];
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[self setNeedsDisplay];
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}
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@end
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