//
//  RuledScrollView.m
//  SpectogramPrototype
//
//  Created by Joshua Moerman on 24/12/13.
//  Copyright (c) 2013 Joshua Moerman. All rights reserved.
//

#import "RuledScrollView.h"
#import "Ruler.h"

@interface RuledScrollView () <UIScrollViewDelegate> {
	CGFloat rulerHeight;
	CGFloat rulerWidth;
}
- (void) initView;
@end

@implementation RuledScrollView
@synthesize content, topRuler, leftRuler;

- (id)initWithFrame:(CGRect)frame{
	if(self = [super initWithFrame:frame]){
		[self initView];
	}
	return self;
}

- (id)initWithCoder:(NSCoder *)aDecoder{
	if(self = [super initWithCoder:aDecoder]){
		[self initView];
	}
	return self;
}

- (void)initView {
	rulerHeight = 44;
	rulerWidth = 120;
	
	self.delegate = self;
	self.backgroundColor = [UIColor whiteColor];
	
	content = [[UIView alloc] initWithFrame:self.frame];
	content.autoresizesSubviews = NO;
	[self addSubview:content];
	
	CGRect frame2 = self.frame;
	frame2.size.height = rulerHeight;
	topRuler = [[HorizontalRuler alloc] initWithFrame:frame2];
	topRuler.layer.opacity = 0.5;
	[self addSubview:topRuler];
	
	CGRect frame3 = self.frame;
	frame3.size.width = rulerWidth;
	leftRuler = [[VerticalRuler alloc] initWithFrame:frame3];
	leftRuler.layer.opacity = 0.5;
    [(VerticalRuler*)leftRuler setTuning: 440.0f];
	[self addSubview:leftRuler];
}

- (void)layoutSubviews {
	[super layoutSubviews];
    const CGRect frame = {.origin = self.contentOffset, .size = self.bounds.size};
    const CGRect vis_frame = [self convertRect:self.bounds toView:content];
	{
        CGRect frame2 = frame;
        frame2.size.height = rulerHeight;
		self.topRuler.frame = frame2;
        
        CGFloat begin = vis_frame.origin.x;
        CGFloat end = vis_frame.origin.x + vis_frame.size.width;
        topRuler.visibleInterval = (Interval){.begin = begin, .end = end};
	}
	{
        CGRect frame2 = frame;
        frame2.size.width = rulerWidth;
		self.leftRuler.frame = frame2;
        
        CGFloat begin = vis_frame.origin.y;
        CGFloat end = vis_frame.origin.y + vis_frame.size.height;
        leftRuler.visibleInterval = (Interval){.begin = begin, .end = end};
	}
}

- (void)setContentSize:(CGSize)contentSize{
	[super setContentSize:CGSizeMake(contentSize.width + rulerWidth, contentSize.height + rulerHeight)];
	content.frame = CGRectMake(rulerWidth, rulerHeight, contentSize.width, contentSize.height);
}

- (UIView *)viewForZoomingInScrollView:(UIScrollView *)__unused scrollView{
	return content;
}

@end