/*

 * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package javax.swing.plaf.nimbus;

import javax.swing.plaf.nimbus.AbstractRegionPainter.PaintContext.CacheMode;

import java.awt.Dimension;

import java.awt.Graphics2D;

import java.awt.Insets;

import javax.swing.JComponent;

/**

 * A special painter implementation for tool bar separators in Nimbus.

 * The designer tool doesn't have support for painters which render

 * repeated patterns, but that's exactly what the toolbar separator design

 * is for Nimbus. This custom painter is designed to handle this situation.

 * When support is added to the design tool / code generator to deal with

 * repeated patterns, then we can remove this class.

 * <p>

 */

final class ToolBarSeparatorPainter extends AbstractRegionPainter {

    private static final int SPACE = 3;

    private static final int INSET = 2;

    @Override

    protected PaintContext getPaintContext() {

        //the paint context returned will have a few dummy values. The

        //implementation of doPaint doesn't bother with the "decode" methods

        //but calculates where to paint the circles manually. As such, we

        //only need to indicate in our PaintContext that we don't want this

        //to ever be cached

        return new PaintContext(

                new Insets(1, 0, 1, 0),

                new Dimension(38, 7),

                false, CacheMode.NO_CACHING, 1, 1);

    }

    @Override

    protected void doPaint(Graphics2D g, JComponent c, int width, int height, Object[] extendedCacheKeys) {

        //it is assumed that in the normal orientation the separator renders

        //horizontally. Other code rotates it as necessary for a vertical

        //separator.

        g.setColor(c.getForeground());

        int y = height / 2;

        for (int i=INSET; i<=width-INSET; i+=SPACE) {

            g.fillRect(i, y, 1, 1);

        }

    }

}