防微信二维码扫描，中间透明区域代码,ObjC代码库,德仔网

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【ObjC】防微信二维码扫描，中间透明区域

作者:刘晨迪 / 发布于2015/7/16/ 1328


	//画四个边角
	 CGContextSetLineWidth(ctx, 2);
	 CGContextSetRGBStrokeColor(ctx, 83 /255.0, 239/255.0, 111/255.0, 1);//绿色
	
	 //左上角
	 CGPoint poinsTopLeftA[] = {
	 CGPointMake(rect.origin.x+0.7, rect.origin.y),
	 CGPointMake(rect.origin.x+0.7 , rect.origin.y + 15)
	 };
	
	 CGPoint poinsTopLeftB[] = {CGPointMake(rect.origin.x, rect.origin.y +0.7),CGPointMake(rect.origin.x + 15, rect.origin.y+0.7)};
	 [self addLine:poinsTopLeftA pointB:poinsTopLeftB ctx:ctx];
	
	 //左下角
	 CGPoint poinsBottomLeftA[] = {CGPointMake(rect.origin.x+ 0.7, rect.origin.y + rect.size.height - 15),CGPointMake(rect.origin.x +0.7,rect.origin.y + rect.size.height)};
	 CGPoint poinsBottomLeftB[] = {CGPointMake(rect.origin.x , rect.origin.y + rect.size.height - 0.7) ,CGPointMake(rect.origin.x+0.7 +15, rect.origin.y + rect.size.height - 0.7)};
	 [self addLine:poinsBottomLeftA pointB:poinsBottomLeftB ctx:ctx];
	
	 //右上角
	 CGPoint poinsTopRightA[] = {CGPointMake(rect.origin.x+ rect.size.width - 15, rect.origin.y+0.7),CGPointMake(rect.origin.x + rect.size.width,rect.origin.y +0.7 )};
	 CGPoint poinsTopRightB[] = {CGPointMake(rect.origin.x+ rect.size.width-0.7, rect.origin.y),CGPointMake(rect.origin.x + rect.size.width-0.7,rect.origin.y + 15 +0.7 )};
	 [self addLine:poinsTopRightA pointB:poinsTopRightB ctx:ctx];
	
	 CGPoint poinsBottomRightA[] = {CGPointMake(rect.origin.x+ rect.size.width -0.7 , rect.origin.y+rect.size.height+ -15),CGPointMake(rect.origin.x-0.7 + rect.size.width,rect.origin.y +rect.size.height )};
	 CGPoint poinsBottomRightB[] = {CGPointMake(rect.origin.x+ rect.size.width - 15 , rect.origin.y + rect.size.height-0.7),CGPointMake(rect.origin.x + rect.size.width,rect.origin.y + rect.size.height - 0.7 )};
	 [self addLine:poinsBottomRightA pointB:poinsBottomRightB ctx:ctx];
	 CGContextStrokePath(ctx);

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.防微信二维码扫描，中间透明区域