1 | /*
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2 | * Stop.java
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3 | *
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4 | *
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5 | * The Salamander Project - 2D and 3D graphics libraries in Java
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6 | * Copyright (C) 2004 Mark McKay
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7 | *
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8 | * This library is free software; you can redistribute it and/or
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9 | * modify it under the terms of the GNU Lesser General Public
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10 | * License as published by the Free Software Foundation; either
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11 | * version 2.1 of the License, or (at your option) any later version.
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12 | *
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13 | * This library is distributed in the hope that it will be useful,
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 | * Lesser General Public License for more details.
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17 | *
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18 | * You should have received a copy of the GNU Lesser General Public
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19 | * License along with this library; if not, write to the Free Software
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20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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21 | *
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22 | * Mark McKay can be contacted at mark@kitfox.com. Salamander and other
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23 | * projects can be found at http://www.kitfox.com
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24 | *
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25 | * Created on January 26, 2004, 1:56 AM
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26 | */
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27 |
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28 | package com.kitfox.svg;
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29 |
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30 | import com.kitfox.svg.xml.StyleAttribute;
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31 | import java.awt.*;
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32 | import java.util.*;
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33 |
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34 | import com.kitfox.svg.xml.*;
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35 | import org.xml.sax.*;
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36 |
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37 | /**
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38 | * @author Mark McKay
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39 | * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
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40 | */
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41 | public class Stop extends SVGElement {
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42 |
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43 | float offset = 0f;
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44 | float opacity = 1f;
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45 | Color color = Color.black;
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46 |
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47 | /** Creates a new instance of Stop */
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48 | public Stop() {
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49 | }
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50 | /*
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51 | public void loaderStartElement(SVGLoaderHelper helper, Attributes attrs, SVGElement parent)
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52 | {
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53 | //Load style string
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54 | super.loaderStartElement(helper, attrs, parent);
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55 |
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56 | String offset = attrs.getValue("offset");
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57 | this.offset = (float)XMLParseUtil.parseRatio(offset);
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58 |
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59 | buildStop();
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60 | }
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61 | */
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62 |
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63 | protected void build() throws SVGException
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64 | {
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65 | super.build();
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66 |
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67 | StyleAttribute sty = new StyleAttribute();
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68 |
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69 | if (getPres(sty.setName("offset")))
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70 | {
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71 | offset = sty.getFloatValue();
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72 | String units = sty.getUnits();
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73 | if (units != null && units.equals("%")) offset /= 100f;
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74 | if (offset > 1) offset = 1;
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75 | if (offset < 0) offset = 0;
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76 | }
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77 |
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78 | if (getStyle(sty.setName("stop-color"))) color = sty.getColorValue();
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79 |
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80 | if (getStyle(sty.setName("stop-opacity"))) opacity = sty.getRatioValue();
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81 | }
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82 |
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83 | /**
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84 | * Updates all attributes in this diagram associated with a time event.
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85 | * Ie, all attributes with track information.
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86 | * @return - true if this node has changed state as a result of the time
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87 | * update
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88 | */
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89 | public boolean updateTime(double curTime) throws SVGException
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90 | {
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91 | // if (trackManager.getNumTracks() == 0) return false;
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92 |
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93 | //Get current values for parameters
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94 | StyleAttribute sty = new StyleAttribute();
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95 | boolean shapeChange = false;
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96 |
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97 | if (getPres(sty.setName("offset")))
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98 | {
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99 | float newVal = sty.getFloatValue();
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100 | if (newVal != offset)
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101 | {
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102 | offset = newVal;
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103 | shapeChange = true;
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104 | }
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105 | }
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106 |
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107 | if (getPres(sty.setName("stop-color")))
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108 | {
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109 | Color newVal = sty.getColorValue();
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110 | if (newVal != color)
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111 | {
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112 | color = newVal;
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113 | shapeChange = true;
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114 | }
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115 | }
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116 |
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117 | if (getPres(sty.setName("stop-opacity")))
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118 | {
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119 | float newVal = sty.getFloatValue();
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120 | if (newVal != opacity)
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121 | {
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122 | opacity = newVal;
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123 | shapeChange = true;
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124 | }
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125 | }
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126 |
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127 | return shapeChange;
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128 | }
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129 | }
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