133 lines
3.2 KiB
Objective-C
133 lines
3.2 KiB
Objective-C
//
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// Copyright (c) 2019 Open Whisper Systems. All rights reserved.
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//
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#import "OWSProgressView.h"
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#import <SessionUtilitiesKit/UIView+OWS.h>
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#import <SessionUtilitiesKit/OWSMath.h>
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NS_ASSUME_NONNULL_BEGIN
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@interface OWSProgressView ()
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@property (nonatomic) CAShapeLayer *borderLayer;
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@property (nonatomic) CAShapeLayer *progressLayer;
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@end
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#pragma mark -
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@implementation OWSProgressView
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- (id)init
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{
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self = [super init];
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if (self) {
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[self initCommon];
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}
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return self;
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}
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- (id)initWithFrame:(CGRect)frame
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{
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self = [super initWithFrame:frame];
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if (self) {
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[self initCommon];
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}
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return self;
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}
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- (void)initCommon
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{
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self.opaque = NO;
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self.userInteractionEnabled = NO;
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self.color = [UIColor whiteColor];
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// Prevent the shape layer from animating changes.
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[CATransaction begin];
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[CATransaction setDisableActions:YES];
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self.borderLayer = [CAShapeLayer new];
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[self.layer addSublayer:self.borderLayer];
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self.progressLayer = [CAShapeLayer new];
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[self.layer addSublayer:self.progressLayer];
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[CATransaction commit];
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[self setContentCompressionResistancePriority:UILayoutPriorityDefaultHigh forAxis:UILayoutConstraintAxisVertical];
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[self setContentHuggingPriority:UILayoutPriorityDefaultHigh forAxis:UILayoutConstraintAxisVertical];
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}
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- (void)layoutSubviews
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{
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[super layoutSubviews];
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[self update];
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}
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- (void)setProgress:(CGFloat)progress
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{
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if (_progress != progress) {
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_progress = progress;
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[self update];
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}
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}
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- (void)setColor:(UIColor *)color
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{
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if (![_color isEqual:color]) {
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_color = color;
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[self update];
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}
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}
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- (void)update
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{
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// Prevent the shape layer from animating changes.
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[CATransaction begin];
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[CATransaction setDisableActions:YES];
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CGFloat borderThickness = MAX(CGHairlineWidth(), self.bounds.size.height * 0.1f);
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CGFloat cornerRadius = MIN(self.bounds.size.width, self.bounds.size.height) * 0.5f;
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// Add the outer border.
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UIBezierPath *borderPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds cornerRadius:cornerRadius];
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self.borderLayer.path = borderPath.CGPath;
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self.borderLayer.strokeColor = self.color.CGColor;
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self.borderLayer.lineWidth = borderThickness;
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self.borderLayer.fillColor = [UIColor clearColor].CGColor;
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// Add the inner progress.
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CGRect progressRect = self.bounds;
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progressRect.size.width = cornerRadius * 2;
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CGFloat baseProgress = borderThickness * 2;
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CGFloat minProgress = baseProgress;
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CGFloat maxProgress = MAX(0, self.bounds.size.width - baseProgress);
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progressRect.size.width = CGFloatLerp(minProgress, maxProgress, CGFloatClamp01(self.progress));
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UIBezierPath *progressPath = [UIBezierPath bezierPathWithRoundedRect:progressRect cornerRadius:cornerRadius];
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self.progressLayer.path = progressPath.CGPath;
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self.progressLayer.fillColor = self.color.CGColor;
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[CATransaction commit];
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}
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+ (CGSize)defaultSize
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{
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return CGSizeMake(150, 16);
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}
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- (CGSize)sizeThatFits:(CGSize)size
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{
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return OWSProgressView.defaultSize;
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}
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- (CGSize)intrinsicContentSize
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{
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return CGSizeMake(UIViewNoIntrinsicMetric, 16);
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}
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@end
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NS_ASSUME_NONNULL_END
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