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110 lines
2.8 KiB
110 lines
2.8 KiB
10 years ago
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// RuledScrollView.m
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// SpectogramPrototype
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//
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// Created by Joshua Moerman on 24/12/13.
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// Copyright (c) 2013 Joshua Moerman. All rights reserved.
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//
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#import "RuledScrollView.h"
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@interface RuledScrollView () <UIScrollViewDelegate> {
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CGFloat rulerHeight;
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CGFloat rulerWidth;
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}
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- (void) initView;
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- (void) placeTicks;
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@end
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@implementation RuledScrollView
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@synthesize content, topRuler, leftRuler;
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- (id)initWithFrame:(CGRect)frame{
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if(self = [super initWithFrame:frame]){
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[self initView];
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}
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return self;
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}
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- (id)initWithCoder:(NSCoder *)aDecoder{
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if(self = [super initWithCoder:aDecoder]){
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[self initView];
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}
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return self;
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}
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- (void)initView {
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rulerHeight = 44;
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rulerWidth = 120;
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self.delegate = self;
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self.backgroundColor = [UIColor whiteColor];
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content = [[UIView alloc] initWithFrame:self.frame];
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content.autoresizesSubviews = NO;
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[self addSubview:content];
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CGRect frame2 = self.frame;
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frame2.size.height = rulerHeight;
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topRuler = [[UIView alloc] initWithFrame:frame2];
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topRuler.layer.opacity = 0.5;
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topRuler.backgroundColor = self.backgroundColor;
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[self addSubview:topRuler];
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CGRect frame3 = self.frame;
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frame3.size.width = rulerWidth;
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leftRuler = [[UIView alloc] initWithFrame:frame3];
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leftRuler.layer.opacity = 0.5;
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leftRuler.backgroundColor = self.backgroundColor;
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[self addSubview:leftRuler];
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}
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/* we should draw the ticks in drawRect:
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[[UIColor blackColor] setFill];
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UIRectFill((CGRect){0,200,rect.size.width,1});
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and do tiling for the text
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*/
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- (void)placeTicks {
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[topRuler.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
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for (CGFloat x = rulerWidth + 50; x < topRuler.frame.size.width; x += 100){
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UIView * line = [[UIView alloc] initWithFrame:CGRectMake(x, 0, 1, rulerHeight)];
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line.backgroundColor = [UIColor blackColor];
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[topRuler addSubview:line];
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CGFloat width = 100;
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UILabel * text = [[UILabel alloc] initWithFrame:CGRectMake(x - width/2, 0, width, rulerHeight)];
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text.text = [NSString stringWithFormat:@"%.0f", x];
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text.textAlignment = NSTextAlignmentCenter;
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[topRuler addSubview:text];
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}
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}
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- (void)layoutSubviews {
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{
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CGRect frame = self.topRuler.frame;
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frame.origin.y = self.contentOffset.y;
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self.topRuler.frame = frame;
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[self placeTicks];
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}
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{
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CGRect frame = self.leftRuler.frame;
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frame.origin.x = self.contentOffset.x;
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self.leftRuler.frame = frame;
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}
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}
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- (void)setContentSize:(CGSize)contentSize{
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[super setContentSize:CGSizeMake(contentSize.width + rulerWidth, contentSize.height + rulerHeight)];
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content.frame = CGRectMake(rulerWidth, rulerHeight, contentSize.width, contentSize.height);
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topRuler.frame = CGRectMake(0, 0, contentSize.width + rulerWidth, rulerHeight);
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leftRuler.frame = CGRectMake(0, 0, rulerWidth, contentSize.height + rulerHeight);
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}
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- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{
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return content;
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}
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@end
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