//
//  QRPhotoAlbumButton.m
//  Unity-iPhone
//
//  Created by zhl on 2022/12/6.
//

#import "QRPhotoAlbumButton.h"

@implementation QRPhotoAlbumButton

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
    // Drawing code
}
*/
- (id)initWithFrame:(CGRect)frame
{
  if ((self = [super initWithFrame:frame])) {
    _edgeColor            = [UIColor whiteColor];
    _fillColor            = [UIColor darkGrayColor];
    _edgeHighlightedColor = [UIColor whiteColor];
    _fillHighlightedColor = [UIColor blackColor];
  }
  return self;
}

- (void)drawRect:(CGRect)rect {
  CGFloat width  = rect.size.width;
  CGFloat height = rect.size.height;
  CGFloat center = width / 2;
  CGFloat middle = height / 2;

  CGFloat strokeLineWidth = 2;
  
  // Colors

  UIColor *paintColor  = (self.state != UIControlStateHighlighted) ? _fillColor : _fillHighlightedColor;
  UIColor *strokeColor = (self.state != UIControlStateHighlighted) ? _edgeColor : _edgeHighlightedColor;
  
  // box
  CGFloat cameraWidth  = width * 0.6;
  CGFloat cameraHeight = cameraWidth * 0.618;
  CGFloat cameraX      = center - cameraWidth / 2;
  CGFloat cameraY      = middle - cameraHeight / 2;
  CGFloat cameraRadius = cameraWidth / 80;

  UIBezierPath *boxPath = [UIBezierPath bezierPathWithRoundedRect:CGRectMake(cameraX, cameraY, cameraWidth, cameraHeight) cornerRadius:cameraRadius];
  
  // Camera lens

  CGFloat circleSize = cameraHeight * 0.2;
  CGFloat cirlceX    = cameraX + circleSize;
  CGFloat circleY    = cameraY + circleSize;

  UIBezierPath *circlePath = [UIBezierPath bezierPathWithOvalInRect:CGRectMake(cirlceX, circleY, circleSize, circleSize)];
  
  // triangle
  
  
  UIBezierPath *linePath = [UIBezierPath bezierPath];
  [linePath moveToPoint:CGPointMake(cameraX, cameraY + cameraHeight * 3 /4)];
  [linePath addLineToPoint:CGPointMake(cirlceX, cameraY + cameraHeight / 2)];
  [linePath addLineToPoint:CGPointMake(cameraX + cameraWidth * 2 / 5 , cameraY + cameraHeight * 4 / 5)];
  [linePath addLineToPoint:CGPointMake(cameraX + cameraWidth * 7 / 10, cameraY + cameraHeight* 2 / 5)];
  [linePath addLineToPoint:CGPointMake(cameraX + cameraWidth, cameraY + cameraHeight * 4 / 5)];
  [linePath addLineToPoint:CGPointMake(cameraX + cameraWidth, cameraY + cameraHeight)];
  [linePath addLineToPoint:CGPointMake(cameraX, cameraY + cameraHeight)];
  [linePath closePath];
  linePath.lineCapStyle = kCGLineCapRound;
  linePath.lineJoinStyle = kCGLineJoinRound;
  // drawing
  
  [paintColor setFill];
//  [boxPath fill];
  [strokeColor setStroke];
  boxPath.lineWidth = strokeLineWidth;
  [boxPath stroke];
  
  [paintColor setFill];
  [circlePath fill];
  [strokeColor setStroke];
  circlePath.lineWidth = strokeLineWidth;
  [circlePath stroke];
  
  [paintColor setFill];
  [linePath fill];
  [strokeColor setStroke];
  linePath.lineWidth = strokeLineWidth;
  [linePath stroke];
  
}

// MARK: - UIResponder Methods

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
  [super touchesBegan:touches withEvent:event];

  [self setNeedsDisplay];
}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
  [super touchesMoved:touches withEvent:event];

  [self setNeedsDisplay];
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
  [super touchesEnded:touches withEvent:event];

  [self setNeedsDisplay];
}

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{
  [super touchesCancelled:touches withEvent:event];

  [self setNeedsDisplay];
}
@end