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/*
CsoundButtonBinding.m:
Copyright (C) 2014 Steven Yi, Aurelius Prochazka
This file is part of Csound for iOS.
The Csound for iOS Library is free software; you can redistribute it
and/or modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
Csound is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Csound; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA
*/
#import "CsoundLabelBinding.h"
@interface CsoundLabelBinding () {
float *channelPtr;
}
@property (nonatomic, strong) NSString *channelName;
@property (nonatomic, strong) UILabel *label;
@end
@implementation CsoundLabelBinding
-(instancetype)initLabel:(UILabel *)label channelName:(NSString *)channelName
{
if (self = [super init]) {
self.channelName = channelName;
self.label = label;
}
return self;
}
-(void)setup:(CsoundObj *)csoundObj
{
channelPtr = [csoundObj getOutputChannelPtr:self.channelName
channelType:CSOUND_CONTROL_CHANNEL];
}
-(void)updateValuesFromCsound
{
[self performSelectorOnMainThread:@selector(updateLabelText:)
withObject:nil
waitUntilDone:NO];
}
-(void)updateLabelText:(id)sender
{
self.label.text = [NSString stringWithFormat:@"%.*f", _precision, *channelPtr];
[self.label setNeedsDisplay];
}
@end
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