mirror of https://github.com/octoleo/plantuml.git
141 lines
5.5 KiB
Java
141 lines
5.5 KiB
Java
/*
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* Copyright 2003-2004, Franz-Josef Elmer, All rights reserved
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details
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* (http://www.gnu.org/copyleft/lesser.html).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package jcckit.plot;
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import java.awt.Color;
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import jcckit.graphic.GraphicAttributes;
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import jcckit.graphic.ShapeAttributes;
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import jcckit.util.ConfigParameters;
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/**
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* An {@link AttributesHint} which wraps {@link ShapeAttributes}.
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* Each call of {@link #getNextHint()} returns a new instance of
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* <tt>ShapeAttributes</tt> where fill color, line color and/or
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* line thickness has been increased by a constant amount.
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*
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* @author Franz-Josef Elmer
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*/
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public class ShapeAttributesHint implements AttributesHint, Cloneable {
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/** Configuration parameter key. */
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public static final String INITIAL_ATTRIBUTES_KEY = "initialAttributes",
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FILL_COLOR_HSB_INCREMENT_KEY
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= "fillColorHSBIncrement",
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LINE_COLOR_HSB_INCREMENT_KEY
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= "lineColorHSBIncrement",
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LINE_THICKNESS_INCREMENT_KEY
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= "lineThicknessIncrement";
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private static float[] extractHSB(Color color) {
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return color == null ? null
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: Color.RGBtoHSB(color.getRed(), color.getGreen(), color.getBlue(),
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null);
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}
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private static Color createColor(float[] colorHSB) {
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return colorHSB == null ? null
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: Color.getHSBColor(colorHSB[0], colorHSB[1], colorHSB[2]);
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}
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private static float[] incrementColor(float[] colorHSB,
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double[] increments) {
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float[] result = null;
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if (colorHSB != null) {
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result = (float[]) colorHSB.clone();
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for (int i = 0; i < 3; i++) {
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result[i] += increments[i];
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}
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}
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return result;
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}
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private float[] _fillColorHSB;
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private float[] _lineColorHSB;
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private double _lineThickness;
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private double[] _linePattern;
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private double[] _fillColorHSBIncrement;
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private double[] _lineColorHSBIncrement;
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private double _lineThicknessIncrement;
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/**
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* Creates an instance from the specified configuration parameters.
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* <table border=1 cellpadding=5>
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* <tr><th>Key & Default Value</th><th>Type</th><th>Mandatory</th>
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* <th>Description</th></tr>
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* <tr><td><tt>initialAttributes = </tt><i>default values of
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* {@link ShapeAttributes}</i></td>
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* <td><tt>ConfigParameters</tt></td><td>no</td>
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* <td>Initial values of shape attributes. Note, that default
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* fill and line colors are undefined (they depend on the
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* <tt>Renderer</tt>). In this case color increments have no effects.
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* </td></tr>
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* <tr><td><tt>fillColorHSBIncrement = 0 0 0</tt></td>
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* <td><tt>double[]</tt></td><td>no</td>
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* <td>Hue, saturation, and brightness increments of the fill color.
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* </td></tr>
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* <tr><td><tt>lineColorHSBIncrement = 0 0 0</tt></td>
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* <td><tt>double[]</tt></td><td>no</td>
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* <td>Hue, saturation, and brightness increments of the line color.
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* </td></tr>
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* <tr><td><tt>lineThicknessIncrement = 0</tt></td>
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* <td><tt>double</tt></td><td>no</td>
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* <td>Line thickness increment.</td></tr>
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* </table>
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*/
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public ShapeAttributesHint(ConfigParameters config) {
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ShapeAttributes attributes
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= new ShapeAttributes(config.getNode(INITIAL_ATTRIBUTES_KEY));
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_fillColorHSB = extractHSB(attributes.getFillColor());
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_lineColorHSB = extractHSB(attributes.getLineColor());
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_lineThickness = attributes.getLineThickness();
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_linePattern = attributes.getLinePattern();
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_fillColorHSBIncrement
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= config.getDoubleArray(FILL_COLOR_HSB_INCREMENT_KEY, new double[3]);
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_lineColorHSBIncrement
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= config.getDoubleArray(LINE_COLOR_HSB_INCREMENT_KEY, new double[3]);
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_lineThicknessIncrement
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= config.getDouble(LINE_THICKNESS_INCREMENT_KEY, 0);
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}
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/**
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* Creates a new <tt>ShapeAttributesHint</tt> where all attributes has been
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* incremented.
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*/
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public AttributesHint getNextHint() {
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ShapeAttributesHint nextHint = null;
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try {
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nextHint = (ShapeAttributesHint) clone();
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} catch (CloneNotSupportedException e) {}
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nextHint._fillColorHSB
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= incrementColor(_fillColorHSB, _fillColorHSBIncrement);
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nextHint._lineColorHSB
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= incrementColor(_lineColorHSB, _lineColorHSBIncrement);
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nextHint._lineThickness
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= Math.max(0, _lineThickness + _lineThicknessIncrement);
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return nextHint;
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}
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/** Returns the wrapped {@link ShapeAttributes} instance. */
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public GraphicAttributes getAttributes() {
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return new ShapeAttributes(createColor(_fillColorHSB),
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createColor(_lineColorHSB),
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_lineThickness, _linePattern);
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}
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}
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