Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/chart/ChartOutputTab.java @ 555:33b86f5b1168

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Don't crash if there is no transformer. flys-client/trunk@2078 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Wed, 08 Jun 2011 10:57:28 +0000
parents 6050d49eaba3
children 460b8e0f0563
rev   line source
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fc60822e9c89 Added a new package 'chart' that should be the place where chart relevant classes should be stored. Moved ChartOutputTab into that package.
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1 package de.intevation.flys.client.client.ui.chart;
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2
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3 import java.util.Date;
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e74bf6bfeeb6 Use the same code to create the attribute document for the chart creation in ChartOutputService and ChartInfoService.
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4 import java.util.HashMap;
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5 import java.util.Map;
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6
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7 import com.google.gwt.core.client.GWT;
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8 import com.google.gwt.user.client.rpc.AsyncCallback;
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9
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10 import com.smartgwt.client.widgets.Canvas;
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11 import com.smartgwt.client.widgets.Img;
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12
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13 import com.smartgwt.client.widgets.layout.HLayout;
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14 import com.smartgwt.client.widgets.layout.VLayout;
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15
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16 import com.smartgwt.client.widgets.events.ResizedEvent;
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17 import com.smartgwt.client.widgets.events.ResizedHandler;
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18
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19 import de.intevation.flys.client.shared.Transform2D;
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20 import de.intevation.flys.client.shared.model.Axis;
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21 import de.intevation.flys.client.shared.model.ChartInfo;
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22 import de.intevation.flys.client.shared.model.Collection;
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23 import de.intevation.flys.client.shared.model.OutputMode;
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24 import de.intevation.flys.client.client.Config;
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25 import de.intevation.flys.client.client.event.OutputParameterChangeEvent;
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26 import de.intevation.flys.client.client.event.OutputParameterChangeHandler;
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27 import de.intevation.flys.client.client.event.PanEvent;
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28 import de.intevation.flys.client.client.event.PanHandler;
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29 import de.intevation.flys.client.client.event.ZoomEvent;
ed29599e06e5 Added the ChartOutputTab as ZoomHandler for the ZoomboxControl - no zooming is done yet.
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30 import de.intevation.flys.client.client.event.ZoomHandler;
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31 import de.intevation.flys.client.client.services.ChartInfoService;
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32 import de.intevation.flys.client.client.services.ChartInfoServiceAsync;
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33 import de.intevation.flys.client.client.ui.CollectionView;
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34 import de.intevation.flys.client.client.ui.OutputTab;
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35
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36
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37 /**
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38 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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39 */
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40 public class ChartOutputTab
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41 extends OutputTab
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42 implements ResizedHandler, OutputParameterChangeHandler, ZoomHandler,
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43 PanHandler
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44 {
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45 public static final int DEFAULT_CHART_WIDTH = 600;
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46 public static final int DEFAULT_CHART_HEIGHT = 500;
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47
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48 public static final int THEMEPANEL_MIN_WIDTH = 200;
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49
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51 /** The service that is used to fetch chart information.*/
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52 protected ChartInfoServiceAsync info = GWT.create(ChartInfoService.class);
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53
552
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54
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55 /** The ChartInfo object that provides information about the current
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56 * chart.*/
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57 protected ChartInfo chartInfo;
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58
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59 /** The transformer used to transform image pixels into chart coordinates.*/
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60 protected Transform2D transformer;
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61
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62 /** The collection view.*/
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63 protected CollectionView view;
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64
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65
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66 /** The canvas that wraps the chart toolbar.*/
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67 protected Canvas tbarPanel;
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68
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69 /** The canvas that wraps the theme editor.*/
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70 protected Canvas left;
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71
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72 /** The canvas that wraps the chart.*/
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73 protected Canvas right;
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75
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76 /** Chart zoom options.*/
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77 protected double[] xrange;
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78 protected double[] yrange;
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79
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81 /**
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82 * The default constructor to create a new ChartOutputTab.
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83 *
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84 * @param title The title of this tab.
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85 * @param collection The Collection which this chart belongs to.
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86 * @param mode The OutputMode.
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87 */
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88 public ChartOutputTab(
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89 String title,
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90 Collection collection,
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91 OutputMode mode,
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92 CollectionView collectionView
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93 ){
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94 super(title, collection, mode);
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95
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96 view = collectionView;
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97 left = new Canvas();
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98 right = new Canvas();
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99 tbarPanel = new ChartToolbar(collectionView, this);
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100 xrange = new double[2];
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101 yrange = new double[2];
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102
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103 left.setBorder("1px solid black");
527
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104 left.setWidth(THEMEPANEL_MIN_WIDTH);
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105 left.setMinWidth(THEMEPANEL_MIN_WIDTH);
521
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106 right.setWidth("*");
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107
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108 VLayout vLayout = new VLayout();
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109 vLayout.setMembersMargin(2);
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110
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111 HLayout hLayout = new HLayout();
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112 hLayout.setWidth100();
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113 hLayout.setHeight100();
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114 hLayout.setMembersMargin(10);
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115
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116 hLayout.addMember(left);
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117 hLayout.addMember(right);
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118
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119 ChartThemePanel ctp = new ChartThemePanel(collection, mode);
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120 ctp.addOutputParameterChangeHandler(this);
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121
521
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122 right.addChild(createChartPanel());
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123 left.addChild(ctp);
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124
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125 vLayout.addMember(tbarPanel);
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126 vLayout.addMember(hLayout);
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127
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128 setPane(vLayout);
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129
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130 right.addResizedHandler(this);
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131 }
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132
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133
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134 /**
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135 * This method is called after the chart panel has resized. It removes the
fc60822e9c89 Added a new package 'chart' that should be the place where chart relevant classes should be stored. Moved ChartOutputTab into that package.
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136 * chart - if existing - and requests a new one with adjusted size.
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137 *
fc60822e9c89 Added a new package 'chart' that should be the place where chart relevant classes should be stored. Moved ChartOutputTab into that package.
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138 * @param event The resize event.
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139 */
fc60822e9c89 Added a new package 'chart' that should be the place where chart relevant classes should be stored. Moved ChartOutputTab into that package.
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140 public void onResized(ResizedEvent event) {
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141 updateChartPanel();
538
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142 updateTransformer();
531
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143 }
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144
c17c593f8732 The chart in the ChartOutputTab is refreshed when there occur any changes in the chart theme panel.
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diff changeset
145
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diff changeset
146 /**
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147 * Listens to change event in the chart them panel and updates chart after
c17c593f8732 The chart in the ChartOutputTab is refreshed when there occur any changes in the chart theme panel.
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148 * receiving such an event.
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149 *
c17c593f8732 The chart in the ChartOutputTab is refreshed when there occur any changes in the chart theme panel.
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150 * @param event The OutputParameterChangeEvent.
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151 */
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152 public void onOutputParameterChanged(OutputParameterChangeEvent event) {
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153 updateChartPanel();
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154 }
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155
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156
538
75df57220104 Adapted the MousePositionPanel to use the Transform2D object for computing the chart coordinates from image coordinates.
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157 /**
541
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158 * Listens to zoom events and refreshes the current chart in such case.
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159 *
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160 * @param evt The ZoomEvent that stores the coordinates for zooming.
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161 */
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162 public void onZoom(ZoomEvent evt) {
555
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163 if (transformer == null) {
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164 return;
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165 }
541
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diff changeset
166 double[] lower = transformer.transform(evt.getStartX(), evt.getStartY());
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diff changeset
167 double[] upper = transformer.transform(evt.getEndX(), evt.getEndY());
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168
542
7c57149e8715 Append the x and y ranges determined after zooming with the ZoomboxControl to the attribute document used for the chart creation.
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diff changeset
169 xrange[0] = lower[0];
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170 xrange[1] = upper[0];
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171 yrange[0] = upper[1];
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172 yrange[1] = lower[1];
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173
549
e74bf6bfeeb6 Use the same code to create the attribute document for the chart creation in ChartOutputService and ChartInfoService.
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174 updateTransformer();
542
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175 updateChartPanel();
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176 }
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177
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178
552
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179 public void onPan(PanEvent event) {
555
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180 if (transformer == null) {
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diff changeset
181 return;
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diff changeset
182 }
552
6050d49eaba3 Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar.
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183 int[] start = event.getStartPos();
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184 int[] end = event.getEndPos();
6050d49eaba3 Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar.
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185
6050d49eaba3 Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar.
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diff changeset
186 double[] startPos = transformer.transform(start[0], start[1]);
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diff changeset
187 double[] endPos = transformer.transform(end[0], end[1]);
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188
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189 double diffX = startPos[0] - endPos[0];
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diff changeset
190 double diffY = startPos[1] - endPos[1];
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191
6050d49eaba3 Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar.
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diff changeset
192 panTo(diffX, diffY);
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193 }
6050d49eaba3 Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar.
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194
6050d49eaba3 Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar.
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195
6050d49eaba3 Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar.
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diff changeset
196 /**
6050d49eaba3 Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar.
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197 * This method pans to chart with a given factor.
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198 */
6050d49eaba3 Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar.
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199 public void panTo(double diffX, double diffY) {
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diff changeset
200 Axis xAxis = chartInfo.getXAxis(0);
6050d49eaba3 Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar.
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diff changeset
201 Axis yAxis = chartInfo.getYAxis(0);
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202
6050d49eaba3 Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar.
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diff changeset
203 xrange[0] = xAxis.getFrom() + diffX;
6050d49eaba3 Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar.
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diff changeset
204 xrange[1] = xAxis.getTo() + diffX;
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diff changeset
205 yrange[0] = yAxis.getFrom() + diffY;
6050d49eaba3 Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar.
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diff changeset
206 yrange[1] = yAxis.getTo() + diffY;
6050d49eaba3 Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar.
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207
6050d49eaba3 Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar.
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diff changeset
208 updateTransformer();
6050d49eaba3 Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar.
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diff changeset
209 updateChartPanel();
6050d49eaba3 Adapted the ChartInfoService to return more information about charts than before. In addition, the PanControl is added to the chart toolbar.
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diff changeset
210 }
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211
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212
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213 public void resetRanges() {
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214 xrange[0] = 0;
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215 xrange[1] = 0;
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216 yrange[0] = 0;
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217 yrange[1] = 0;
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218
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219 updateTransformer();
543
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220 updateChartPanel();
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221 }
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222
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223
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224 /**
544
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225 * This method is used to zoom out.
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226 *
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227 * @param factor The factor should be between 0-100.
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228 */
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229 public void zoomOut(int factor) {
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230 if (factor < 0 || factor > 100 || xrange == null || yrange == null) {
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231 return;
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232 }
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233
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234 double xadd = (xrange[1] - xrange[0]) / 100 * factor;
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235 double yadd = (yrange[1] - yrange[0]) / 100 * factor;
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236
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237 xrange[0] -= xadd;
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238 xrange[1] += xadd;
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239 yrange[0] -= yadd;
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240 yrange[1] += yadd;
544
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241
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242 updateTransformer();
544
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243 updateChartPanel();
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244 }
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245
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246
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247 /**
538
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248 * Updates the Transform2D object using the chart info service.
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249 */
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250 public void updateTransformer() {
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251 Config config = Config.getInstance();
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252 String url = config.getServerUrl();
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253 String locale = config.getLocale();
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254
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255 info.getChartInfo(
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256 view.getCollection(),
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257 url,
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258 locale,
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259 mode.getName(),
549
e74bf6bfeeb6 Use the same code to create the attribute document for the chart creation in ChartOutputService and ChartInfoService.
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260 getChartAttributes(),
552
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261 new AsyncCallback<ChartInfo>() {
538
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262 public void onFailure(Throwable caught) {
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263 GWT.log("ERROR: " + caught.getMessage());
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264 }
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265
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266 public void onSuccess(ChartInfo chartInfo) {
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267 setChartInfo(chartInfo);
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268 }
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269 });
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270 }
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271
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272
531
c17c593f8732 The chart in the ChartOutputTab is refreshed when there occur any changes in the chart theme panel.
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273 public void updateChartPanel() {
521
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274 Canvas[] children = right.getChildren();
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275 for (Canvas child: children) {
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276 right.removeChild(child);
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277 }
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278
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279 right.addChild(createChartPanel(right.getWidth(), right.getHeight()));
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280 }
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281
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282
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283 /**
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284 * Returns the existing chart panel.
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285 *
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286 * @return the existing chart panel.
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287 */
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288 public Canvas getChartPanel() {
538
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289 Canvas[] children = right.getChildren();
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290
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291 if (children == null || children.length == 0) {
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292 GWT.log("=> No chart image in the panel.");
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293 return right;
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294 }
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295
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296 return children[0];
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297 }
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298
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299
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300 public ChartInfo getChartInfo() {
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301 return chartInfo;
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302 }
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303
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304
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305 protected void setChartInfo(ChartInfo chartInfo) {
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306 this.chartInfo = chartInfo;
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307 setTransformer(chartInfo.getTransformer());
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308 }
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309
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310
538
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311 /**
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312 * Returns the Transform2D object used to transform image coordinates into
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313 * chart coordinates.
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314 *
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315 * @return the Transform2D object.
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316 */
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317 public Transform2D getTransformer() {
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318 return transformer;
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319 }
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320
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321
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322 /**
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323 * Set a new Transform2D object for the chart. This should be the case, only
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324 * if the chart image size has changed.
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325 *
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326 * @param transformer The new Transform2D object.
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327 */
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328 protected void setTransformer(Transform2D transformer) {
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329 this.transformer = transformer;
534
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330 }
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331
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332
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333 /**
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334 * Creates a new chart panel with default size.
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335 *
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336 * @return the created chart panel.
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337 */
521
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338 protected Canvas createChartPanel() {
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339 return createChartPanel(DEFAULT_CHART_WIDTH, DEFAULT_CHART_HEIGHT);
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340 }
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341
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342
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343 /**
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344 * Creates a new chart panel with specified width and height.
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345 *
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346 * @param width The width for the chart panel.
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347 * @param height The height for the chart panel.
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348 *
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349 * @return the created chart panel.
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350 */
521
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351 protected Canvas createChartPanel(int width, int height) {
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352 Img chart = getChartImg(width, height);
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353 chart.setWidth100();
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354 chart.setHeight100();
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355
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356 return chart;
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357 }
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358
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359
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360 /**
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361 * Builds the chart image and returns it.
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362 *
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363 * @param width The chart width.
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364 * @param height The chart height.
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365 *
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366 * @return the chart image.
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367 */
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368 protected Img getChartImg(int width, int height) {
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369 return new Img(getImgUrl(width, height));
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370 }
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371
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372
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373 /**
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374 * Builds the URL that points to the chart image.
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375 *
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376 * @param width The width of the requested chart.
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377 * @param height The height of the requested chart.
542
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378 * @param xr Optional x range (used for zooming).
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379 * @param yr Optional y range (used for zooming).
521
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380 *
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381 * @return the URL to the chart image.
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382 */
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383 protected String getImgUrl(int width, int height) {
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384 Config config = Config.getInstance();
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385
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386 String imgUrl = GWT.getModuleBaseURL();
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387 imgUrl += "chart";
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388 imgUrl += "?uuid=" + collection.identifier();
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389 imgUrl += "&type=" + mode.getName();
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390 imgUrl += "&server=" + config.getServerUrl();
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391 imgUrl += "&locale=" + config.getLocale();
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392 imgUrl += "&timestamp=" + new Date().getTime();
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393 imgUrl += "&width=" + Integer.toString(width);
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394 imgUrl += "&height=" + Integer.toString(height);
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395
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396 if (xrange != null) {
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397 GWT.log("Zoom to xrange.");
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398 imgUrl += "&minx=" + Double.toString(xrange[0]);
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399 imgUrl += "&maxx=" + Double.toString(xrange[1]);
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400 }
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401
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402 if (yrange != null) {
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403 GWT.log("Zoom to xrange.");
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404 imgUrl += "&miny=" + Double.toString(yrange[0]);
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405 imgUrl += "&maxy=" + Double.toString(yrange[1]);
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406 }
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407
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408 return imgUrl;
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409 }
549
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410
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411
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412 public Map getChartAttributes() {
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413 Map<String, String> attr = new HashMap<String, String>();
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414
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415 Canvas chart = getChartPanel();
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416 attr.put("width", chart.getWidth().toString());
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417 attr.put("height", chart.getHeight().toString());
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418
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419 if (xrange != null) {
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420 attr.put("minx", Double.toString(xrange[0]));
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421 attr.put("maxx", Double.toString(xrange[1]));
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422 }
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423
e74bf6bfeeb6 Use the same code to create the attribute document for the chart creation in ChartOutputService and ChartInfoService.
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424 if (yrange != null) {
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425 attr.put("miny", Double.toString(yrange[0]));
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426 attr.put("maxy", Double.toString(yrange[1]));
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427 }
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428
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429 return attr;
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430 }
521
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431 }
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432 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org