mirror of
https://github.com/danog/Telegram.git
synced 2024-12-03 09:57:46 +01:00
94 lines
2.8 KiB
Objective-C
94 lines
2.8 KiB
Objective-C
/*
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* This is the source code of Telegram for iOS v. 1.1
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* It is licensed under GNU GPL v. 2 or later.
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* You should have received a copy of the license in this archive (see LICENSE).
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*
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* Copyright Peter Iakovlev, 2013.
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*/
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#import "TGAudioSliderArea.h"
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@implementation TGAudioSliderArea
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- (instancetype)initWithFrame:(CGRect)frame
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{
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self = [super initWithFrame:frame];
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if (self != nil)
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{
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self.exclusiveTouch = true;
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static UIImage *emptyImage = nil;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^
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{
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UIGraphicsBeginImageContextWithOptions(CGSizeMake(2.0f, 2.0f), false, 0.0f);
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emptyImage = UIGraphicsGetImageFromCurrentImageContext();
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UIGraphicsEndImageContext();
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});
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[self setMinimumTrackImage:emptyImage forState:UIControlStateNormal];
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[self setMaximumTrackImage:emptyImage forState:UIControlStateNormal];
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[self setThumbImage:emptyImage forState:UIControlStateNormal];
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}
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return self;
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}
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- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)__unused event
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{
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bool result = CGRectContainsPoint(CGRectInset(self.bounds, -20, -10), point);
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return result;
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}
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- (CGRect)thumbRectForBounds:(CGRect)bounds trackRect:(CGRect)__unused rect value:(float)__unused value
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{
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return bounds;
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}
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- (BOOL)beginTrackingWithTouch:(UITouch *)touch withEvent:(UIEvent *)event
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{
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if ([super beginTrackingWithTouch:touch withEvent:event])
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{
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id<TGAudioSliderAreaDelegate> delegate = _delegate;
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if ([delegate respondsToSelector:@selector(audioSliderDidBeginDragging:withTouch:)])
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[delegate audioSliderDidBeginDragging:self withTouch:touch];
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return true;
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}
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return false;
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}
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- (BOOL)continueTrackingWithTouch:(UITouch *)touch withEvent:(UIEvent *)event
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{
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if ([super continueTrackingWithTouch:touch withEvent:event])
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{
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id<TGAudioSliderAreaDelegate> delegate = _delegate;
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if ([delegate respondsToSelector:@selector(audioSliderWillMove:withTouch:)])
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[delegate audioSliderWillMove:self withTouch:touch];
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return true;
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}
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return true;
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}
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- (void)endTrackingWithTouch:(UITouch *)touch withEvent:(UIEvent *)event
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{
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id<TGAudioSliderAreaDelegate> delegate = _delegate;
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if ([delegate respondsToSelector:@selector(audioSliderDidFinishDragging:)])
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[delegate audioSliderDidFinishDragging:self];
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[super endTrackingWithTouch:touch withEvent:event];
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}
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- (void)cancelTrackingWithEvent:(UIEvent *)event
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{
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id<TGAudioSliderAreaDelegate> delegate = _delegate;
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if ([delegate respondsToSelector:@selector(audioSliderDidCancelDragging:)])
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[delegate audioSliderDidCancelDragging:self];
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[super cancelTrackingWithEvent:event];
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}
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@end
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