Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/chart/ChartOutputTab.java @ 538:75df57220104

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Adapted the MousePositionPanel to use the Transform2D object for computing the chart coordinates from image coordinates. flys-client/trunk@2036 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 01 Jun 2011 09:03:18 +0000
parents e08777967bad
children ed29599e06e5
rev   line source
521
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
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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3 import java.util.Date;
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4
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5 import com.google.gwt.core.client.GWT;
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75df57220104 Adapted the MousePositionPanel to use the Transform2D object for computing the chart coordinates from image coordinates.
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6 import com.google.gwt.user.client.rpc.AsyncCallback;
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8 import com.smartgwt.client.widgets.Canvas;
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9 import com.smartgwt.client.widgets.Img;
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11 import com.smartgwt.client.widgets.layout.HLayout;
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12 import com.smartgwt.client.widgets.layout.VLayout;
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13
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14 import com.smartgwt.client.widgets.events.ResizedEvent;
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15 import com.smartgwt.client.widgets.events.ResizedHandler;
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16
538
75df57220104 Adapted the MousePositionPanel to use the Transform2D object for computing the chart coordinates from image coordinates.
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17 import de.intevation.flys.client.shared.Transform2D;
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18 import de.intevation.flys.client.shared.model.Collection;
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19 import de.intevation.flys.client.shared.model.OutputMode;
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20 import de.intevation.flys.client.client.Config;
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21 import de.intevation.flys.client.client.event.OutputParameterChangeEvent;
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22 import de.intevation.flys.client.client.event.OutputParameterChangeHandler;
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23 import de.intevation.flys.client.client.services.ChartInfoService;
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24 import de.intevation.flys.client.client.services.ChartInfoServiceAsync;
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25 import de.intevation.flys.client.client.ui.CollectionView;
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26 import de.intevation.flys.client.client.ui.OutputTab;
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28
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29 /**
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30 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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31 */
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32 public class ChartOutputTab
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33 extends OutputTab
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34 implements ResizedHandler, OutputParameterChangeHandler
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35 {
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36 public static final int DEFAULT_CHART_WIDTH = 600;
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37 public static final int DEFAULT_CHART_HEIGHT = 500;
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38
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39 public static final int THEMEPANEL_MIN_WIDTH = 200;
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41
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538
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43 /** The service that is used to fetch chart information.*/
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44 protected ChartInfoServiceAsync info = GWT.create(ChartInfoService.class);
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45
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46 /** The transformer used to transform image pixels into chart coordinates.*/
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47 protected Transform2D transformer;
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48
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49 /** The collection view.*/
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50 protected CollectionView view;
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51
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52
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53 /** The canvas that wraps the chart toolbar.*/
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54 protected Canvas tbarPanel;
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55
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56 /** The canvas that wraps the theme editor.*/
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57 protected Canvas left;
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58
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59 /** The canvas that wraps the chart.*/
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60 protected Canvas right;
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63 /**
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64 * The default constructor to create a new ChartOutputTab.
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65 *
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66 * @param title The title of this tab.
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67 * @param collection The Collection which this chart belongs to.
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68 * @param mode The OutputMode.
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69 */
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70 public ChartOutputTab(
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71 String title,
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72 Collection collection,
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73 OutputMode mode,
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74 CollectionView collectionView
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75 ){
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76 super(title, collection, mode);
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77
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78 view = collectionView;
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79 left = new Canvas();
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80 right = new Canvas();
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e08777967bad Added a first implementation of a MousePositionPanel - work is not finished yet.
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81 tbarPanel = new ChartToolbar(collectionView, this);
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82
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83 left.setBorder("1px solid black");
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84 left.setWidth(THEMEPANEL_MIN_WIDTH);
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85 left.setMinWidth(THEMEPANEL_MIN_WIDTH);
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86 right.setWidth("*");
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87
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88 VLayout vLayout = new VLayout();
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89 vLayout.setMembersMargin(2);
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91 HLayout hLayout = new HLayout();
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92 hLayout.setWidth100();
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93 hLayout.setHeight100();
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94 hLayout.setMembersMargin(10);
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95
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96 hLayout.addMember(left);
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97 hLayout.addMember(right);
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98
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99 ChartThemePanel ctp = new ChartThemePanel(collection, mode);
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100 ctp.addOutputParameterChangeHandler(this);
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101
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102 right.addChild(createChartPanel());
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103 left.addChild(ctp);
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104
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105 vLayout.addMember(tbarPanel);
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106 vLayout.addMember(hLayout);
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107
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108 setPane(vLayout);
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109
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110 right.addResizedHandler(this);
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111 }
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112
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113
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114 /**
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115 * This method is called after the chart panel has resized. It removes the
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116 * chart - if existing - and requests a new one with adjusted size.
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117 *
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118 * @param event The resize event.
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119 */
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120 public void onResized(ResizedEvent event) {
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121 updateChartPanel();
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122 updateTransformer();
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123 }
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124
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125
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126 /**
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127 * Listens to change event in the chart them panel and updates chart after
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128 * receiving such an event.
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129 *
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130 * @param event The OutputParameterChangeEvent.
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131 */
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132 public void onOutputParameterChanged(OutputParameterChangeEvent event) {
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133 updateChartPanel();
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134 }
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135
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136
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137 /**
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138 * Updates the Transform2D object using the chart info service.
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139 */
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140 public void updateTransformer() {
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141 Canvas chart = getChartPanel();
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142
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143 Config config = Config.getInstance();
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144 String url = config.getServerUrl();
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145 String locale = config.getLocale();
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146
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147 info.getChartInfo(
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148 view.getCollection(),
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149 url,
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150 locale,
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151 mode.getName(),
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152 chart.getWidth(),
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153 chart.getHeight(),
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154 new AsyncCallback<Transform2D>() {
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155 public void onFailure(Throwable caught) {
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156 GWT.log("ERROR: " + caught.getMessage());
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157 }
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158
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159 public void onSuccess(Transform2D transformer) {
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160 setTransformer(transformer);
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161 }
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162 });
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163 }
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164
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165
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166 public void updateChartPanel() {
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167 Canvas[] children = right.getChildren();
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168 for (Canvas child: children) {
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169 right.removeChild(child);
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170 }
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171
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172 right.addChild(createChartPanel(right.getWidth(), right.getHeight()));
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173 }
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174
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175
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176 public Canvas getChartPanel() {
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177 Canvas[] children = right.getChildren();
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178
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179 if (children == null || children.length == 0) {
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180 GWT.log("=> No chart image in the panel.");
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181 return right;
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182 }
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183
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184 return children[0];
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185 }
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186
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187
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188 /**
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189 * Returns the Transform2D object used to transform image coordinates into
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190 * chart coordinates.
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191 *
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192 * @return the Transform2D object.
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193 */
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194 public Transform2D getTransformer() {
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195 return transformer;
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196 }
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197
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198
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199 /**
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200 * Set a new Transform2D object for the chart. This should be the case, only
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201 * if the chart image size has changed.
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202 *
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203 * @param transformer The new Transform2D object.
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204 */
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205 protected void setTransformer(Transform2D transformer) {
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206 this.transformer = transformer;
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207 }
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208
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209
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210 protected Canvas createChartPanel() {
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211 return createChartPanel(DEFAULT_CHART_WIDTH, DEFAULT_CHART_HEIGHT);
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212 }
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213
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214
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215 protected Canvas createChartPanel(int width, int height) {
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216 Img chart = getChartImg(width, height);
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217 chart.setWidth100();
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218 chart.setHeight100();
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219
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220 return chart;
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221
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222 }
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223
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224
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225 /**
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226 * Builds the chart image and returns it.
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227 *
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228 * @param width The chart width.
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229 * @param height The chart height.
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230 *
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231 * @return the chart image.
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232 */
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233 protected Img getChartImg(int width, int height) {
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234 return new Img(getImgUrl(width, height));
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235 }
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236
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237
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238 /**
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239 * Builds the URL that points to the chart image.
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240 *
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241 * @param width The width of the requested chart.
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242 * @param height The height of the requested chart.
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243 *
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244 * @return the URL to the chart image.
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245 */
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246 protected String getImgUrl(int width, int height) {
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247 Config config = Config.getInstance();
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248
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249 String imgUrl = GWT.getModuleBaseURL();
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250 imgUrl += "chart";
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251 imgUrl += "?uuid=" + collection.identifier();
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252 imgUrl += "&type=" + mode.getName();
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253 imgUrl += "&server=" + config.getServerUrl();
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254 imgUrl += "&locale=" + config.getLocale();
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255 imgUrl += "&timestamp=" + new Date().getTime();
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256 imgUrl += "&width=" + Integer.toString(width);
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257 imgUrl += "&height=" + Integer.toString(height);
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258
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259 return imgUrl;
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260 }
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261 }
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262 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org