81 lines
2.4 KiB
Objective-C
81 lines
2.4 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 "QRCodeReaderView.h"
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@interface QRCodeReaderView ()
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@property (nonatomic, strong) CAShapeLayer *overlay;
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@end
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@implementation QRCodeReaderView
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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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[self addOverlay];
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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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CGRect innerRect = CGRectInset(rect, 50, 50);
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CGFloat minSize = MIN(innerRect.size.width, innerRect.size.height);
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if (innerRect.size.width != minSize) {
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innerRect.origin.x += (innerRect.size.width - minSize) / 2;
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innerRect.size.width = minSize;
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}
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else if (innerRect.size.height != minSize) {
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innerRect.origin.y += (innerRect.size.height - minSize) / 2;
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innerRect.size.height = minSize;
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}
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CGRect offsetRect = CGRectOffset(innerRect, 0, 15);
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_overlay.path = [UIBezierPath bezierPathWithRoundedRect:offsetRect cornerRadius:5].CGPath;
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}
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#pragma mark - Private Methods
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- (void)addOverlay
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{
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_overlay = [[CAShapeLayer alloc] init];
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_overlay.backgroundColor = [UIColor clearColor].CGColor;
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_overlay.fillColor = [UIColor clearColor].CGColor;
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_overlay.strokeColor = [UIColor whiteColor].CGColor;
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_overlay.lineWidth = 3;
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_overlay.lineDashPattern = @[@7.0, @7.0];
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_overlay.lineDashPhase = 0;
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[self.layer addSublayer:_overlay];
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}
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@end
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