session-ios/Signal/src/ViewControllers/ConversationView/ConversationScrollButton.m
2017-11-22 09:39:43 -05:00

99 lines
2.6 KiB
Objective-C

//
// Copyright (c) 2017 Open Whisper Systems. All rights reserved.
//
#import "ConversationScrollButton.h"
#import "UIColor+OWS.h"
#import "UIFont+OWS.h"
#import "UIView+OWS.h"
NS_ASSUME_NONNULL_BEGIN
@interface ConversationScrollButton ()
@property (nonatomic) NSString *iconText;
@property (nonatomic) UILabel *iconLabel;
@property (nonatomic) UIView *circleView;
@end
#pragma mark -
@implementation ConversationScrollButton
- (nullable instancetype)initWithIconText:(NSString *)iconText
{
self = [super initWithFrame:CGRectZero];
if (!self) {
return self;
}
self.iconText = iconText;
[self createContents];
return self;
}
+ (CGFloat)circleSize
{
return ScaleFromIPhone5To7Plus(35.f, 40.f);
}
+ (CGFloat)buttonSize
{
return self.circleSize + 2 * 15.f;
}
- (void)createContents
{
UILabel *iconLabel = [UILabel new];
self.iconLabel = iconLabel;
iconLabel.userInteractionEnabled = NO;
const CGFloat circleSize = self.class.circleSize;
UIView *circleView = [UIView new];
self.circleView = circleView;
circleView.backgroundColor = [UIColor colorWithWhite:0.95f alpha:1.f];
circleView.userInteractionEnabled = NO;
circleView.layer.cornerRadius = circleSize * 0.5f;
circleView.layer.shadowColor = [UIColor colorWithWhite:0.5f alpha:1.f].CGColor;
circleView.layer.shadowOffset = CGSizeMake(+1.f, +2.f);
circleView.layer.shadowRadius = 1.5f;
circleView.layer.shadowOpacity = 0.35f;
[circleView autoSetDimension:ALDimensionWidth toSize:circleSize];
[circleView autoSetDimension:ALDimensionHeight toSize:circleSize];
[self addSubview:circleView];
[self addSubview:iconLabel];
[circleView autoCenterInSuperview];
[iconLabel autoCenterInSuperview];
[self updateColors];
}
- (void)setHasUnreadMessages:(BOOL)hasUnreadMessages
{
_hasUnreadMessages = hasUnreadMessages;
[self updateColors];
}
- (void)updateColors
{
const CGFloat circleSize = self.class.circleSize;
self.circleView.backgroundColor
= (self.hasUnreadMessages ? [UIColor ows_materialBlueColor] : [UIColor colorWithWhite:0.95f alpha:1.f]);
self.iconLabel.attributedText = [[NSAttributedString alloc]
initWithString:self.iconText
attributes:@{
NSFontAttributeName : [UIFont ows_fontAwesomeFont:circleSize * 0.8f],
NSForegroundColorAttributeName :
(self.hasUnreadMessages ? [UIColor whiteColor] : [UIColor ows_materialBlueColor]),
NSBaselineOffsetAttributeName : @(-0.5f),
}];
}
@end
NS_ASSUME_NONNULL_END