/*
* Copyright (C) 2013 Trilarion
*
* 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 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 org.tools.ui;
import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.Shape;
import java.awt.geom.Path2D;
import java.awt.geom.Rectangle2D;
import java.awt.geom.RoundRectangle2D;
import java.util.logging.Logger;
import javax.swing.border.Border;
/**
* Opaque rounded border of given color.
*/
public class RoundedBorder implements Border {
private final Insets insets;
private final int arc, dr;
private Color color;
/**
*
* @param top
* @param left
* @param bottom
* @param right
* @param arc
* @param color
*/
public RoundedBorder(int top, int left, int bottom, int right, int arc, Color color) {
if (top < 0 || left < 0 || bottom < 0 || right < 0 || arc < 0) {
throw new IllegalArgumentException();
}
insets = new Insets(top, left, bottom, right);
this.arc = arc;
dr = (int) Math.ceil((1 - 1 / Math.sqrt(2)) * arc);
this.color = color;
}
@Override
public void paintBorder(Component c, Graphics g, int x, int y, int width, int height) {
if (c.isOpaque()) {
Graphics2D g2d = (Graphics2D) g;
Color oldColor = g2d.getColor();
g2d.setColor(color);
Shape outer, inner;
outer = new RoundRectangle2D.Float(insets.left, insets.top, width - insets.left - insets.right, height - insets.top - insets.bottom, arc, arc);
inner = new Rectangle2D.Float(insets.left + dr, insets.top + dr, width - insets.left - insets.right - 2 * dr, height - insets.top - insets.bottom - 2 * dr);
Path2D path = new Path2D.Float(Path2D.WIND_EVEN_ODD);
path.append(outer, false);
path.append(inner, false);
g2d.fill(path);
g2d.setColor(oldColor);
}
}
@Override
public Insets getBorderInsets(Component c) {
return new Insets(insets.top + dr, insets.left + dr, insets.right + dr, insets.bottom + dr);
}
@Override
public boolean isBorderOpaque() {
return true;
}
private static final Logger LOG = Logger.getLogger(RoundedBorder.class.getName());
}