root/Spiral/trunk/SPDrillGradientView.m

/* $Id$ */

/*
 *  Copyright (c) 2008 Axel Andersson
 *  All rights reserved.
 * 
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#import "SPDrillGradientView.h"

@implementation SPDrillGradientView

- (void)setDrawsGradientAtTop:(BOOL)atTop {
        _drawsGradientAtTop = atTop;

        [self setNeedsDisplay:YES];
}



- (void)setDrawsGradientAtBottom:(BOOL)atBottom {
        _drawsGradientAtBottom = atBottom;
        
        [self setNeedsDisplay:YES];
}



#pragma mark -

- (void)drawRect:(NSRect)frame {
        NSGradient              *gradient;
        
        if(_drawsGradientAtTop || _drawsGradientAtBottom) {
                gradient = [[NSGradient alloc] initWithStartingColor:[NSColor colorWithCalibratedWhite:0.0 alpha:0.0]
                                                                                                 endingColor:[NSColor colorWithCalibratedWhite:0.0 alpha:1.0]];

                if(_drawsGradientAtTop)
                        [gradient drawInRect:frame angle:90.0];

                if(_drawsGradientAtBottom)
                        [gradient drawInRect:frame angle:270.0];
                
                [gradient release];
        }
}

@end