/*
 *  R.app : a Cocoa front end to: "R A Computer Language for Statistical Data Analysis"
 *  
 *  R.app Copyright notes:
 *                     Copyright (C) 2004-5  The R Foundation
 *                     written by Stefano M. Iacus and Simon Urbanek
 *
 *                  
 *  R Copyright notes:
 *                     Copyright (C) 1995-1996   Robert Gentleman and Ross Ihaka
 *                     Copyright (C) 1998-2001   The R Development Core Team
 *                     Copyright (C) 2002-2004   The R Foundation
 *
 *  This program 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  A copy of the GNU General Public License is available via WWW at
 *  http://www.gnu.org/copyleft/gpl.html.  You can also obtain it by
 *  writing to the Free Software Foundation, Inc., 59 Temple Place,
 *  Suite 330, Boston, MA  02111-1307  USA.
 *
 *  RColorWellCell.m
 *
 *  Created by Hans-J. Bibiko on 20/03/2011.
 */

#import "RColorWellCell.h"


@implementation RColorWellCell

- (void) drawWithFrame:(NSRect)cellFrame inView:(NSView*)controlView
{
	// Set initial inset from cellFrame
	NSRect rect = NSInsetRect (cellFrame, 0.5f, 0.5f);

	// General inset for colored rect shown inside rect
	CGFloat insetFactor = 2.0f;

	// Draw border
	[[NSColor darkGrayColor] set];
	[NSBezierPath strokeRect: rect];
	[[NSColor grayColor] set];
	[NSBezierPath fillRect: NSInsetRect (rect, 1.0f, 1.0f)];

	// The following rectangle and triangle are needed for displaying color with alpha values
	// Draw black rectangle
	[[NSColor blackColor] set];
	[NSBezierPath fillRect: NSInsetRect (rect, insetFactor, insetFactor)];

	// Draw white triangle
	[[NSColor whiteColor] set];
	NSBezierPath *path = [NSBezierPath bezierPath];
	[path moveToPoint: NSMakePoint(rect.origin.x - insetFactor + rect.size.width, rect.origin.y + insetFactor)];
	[path lineToPoint: NSMakePoint(rect.origin.x - insetFactor + rect.size.width, rect.origin.y + rect.size.height - insetFactor)];
	[path lineToPoint: NSMakePoint(rect.origin.x + insetFactor, rect.origin.y + rect.size.height - insetFactor)];
	[path closePath];
	[path fill];

	// Draw the actual color as rect
	[(NSColor*) [self objectValue] set];
	NSRectFillUsingOperation(NSInsetRect (rect, insetFactor, insetFactor), NSCompositeSourceOver);
}

@end
