coloursampleicon.java

FuncPlotter is a combined Java application and applet for displaying two-dimensional plots of explic

/*====================================================================*\

ColourSampleIcon.java

Colour sample icon class.

------------------------------------------------------------------------

This file is part of FuncPlotter, a combined Java application and applet
for plotting explicit functions in one variable.
Copyright 2005-2007 Andy Morgan-Richards.

FuncPlotter 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 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.

You should have received a copy of the GNU General Public License along
with this program.  If not, see <http://www.gnu.org/licenses/>.

\*====================================================================*/


// PACKAGE


package gui;

//----------------------------------------------------------------------


// IMPORTS


import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;

import javax.swing.Icon;

//----------------------------------------------------------------------


// COLOUR SAMPLE ICON CLASS


public class ColourSampleIcon
    implements Icon
{

////////////////////////////////////////////////////////////////////////
//  Constants
////////////////////////////////////////////////////////////////////////

    private static final    Color   BORDER_COLOUR           = Color.BLACK;
    private static final    Color   DISABLED_BORDER_COLOUR  = new Color( 176, 176, 176 );

////////////////////////////////////////////////////////////////////////
//  Constructors
////////////////////////////////////////////////////////////////////////

    public ColourSampleIcon( int width,
                             int height )
    {
        this.width = width;
        this.height = height;
    }

    //------------------------------------------------------------------

    public ColourSampleIcon( int   width,
                             int   height,
                             Color colour )
    {
        this( width, height );
        this.colour = colour;
    }

    //------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////
//  Instance methods : Icon interface
////////////////////////////////////////////////////////////////////////

    public int getIconWidth( )
    {
        return width;
    }

    //------------------------------------------------------------------

    public int getIconHeight( )
    {
        return height;
    }

    //------------------------------------------------------------------

    public void paintIcon( Component component,
                           Graphics  gr,
                           int       x,
                           int       y )
    {
        gr.setColor( component.isEnabled( ) ? BORDER_COLOUR : DISABLED_BORDER_COLOUR );
        gr.drawRect( x, y, width - 1, height - 1 );
        gr.setColor( component.isEnabled( ) ? (colour == null) ? component.getForeground( ) : colour
                                            : component.getBackground( ) );
        gr.fillRect( x + 1, y + 1, width - 2, height - 2 );
    }

    //------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////
//  Instance variables
////////////////////////////////////////////////////////////////////////

    private int     width;
    private int     height;
    private Color   colour;

}

//----------------------------------------------------------------------