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/*
Project: Sudoku
KnobView.m
Copyright (C) 2007-2011 The Free Software Foundation, Inc
Author: Marko Riedel
This application is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This application 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
Library General Public License for more details.
You should have received a copy of the GNU General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#import <AppKit/AppKit.h>
#import "KnobView.h"
@implementation KnobView
- (float)percent
{
return percent;
}
- setPercent:(float)pval
{
NSAssert(pval>=0.0 && pval<=100.0, @"not a percentage");
percent = pval;
return self;
}
- (void)drawRect:(NSRect)aRect
{
NSRect frame = [self frame];
float radius = frame.size.height/3.0;
NSPoint center = {
percent*frame.size.width/100.0, frame.size.height/2.0
};
[[NSColor whiteColor] set];
PSrectfill(0, 0, frame.size.width, frame.size.height);
[[NSColor blueColor] set];
if(center.x<radius){
center.x = radius;
}
else if(center.x>frame.size.width-radius){
center.x = frame.size.width-radius;
}
PSarc(center.x, center.y, radius, 0, 360);
PSfill();
[[NSColor blackColor] set];
PSsetlinewidth(4);
PSrectstroke(0, 0, frame.size.width, frame.size.height);
}
@end
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