Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/client/ui/chart/MousePositionPanel.java @ 5861:172338b1407f

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GWT client: Added copyright header.
author Sascha L. Teichmann <teichmann@intevation.de>
date Sun, 28 Apr 2013 14:30:15 +0200
parents 5aa05a7a34b7
children ea9eef426962
rev   line source
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172338b1407f GWT client: Added copyright header.
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.client.client.ui.chart;
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10
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11 import java.util.ArrayList;
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12
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13 import com.smartgwt.client.widgets.Canvas;
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14 import com.smartgwt.client.widgets.Label;
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15 import com.smartgwt.client.widgets.layout.HLayout;
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16 import com.smartgwt.client.widgets.events.MouseMoveEvent;
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17 import com.smartgwt.client.widgets.events.MouseMoveHandler;
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18
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19 import org.dive4elements.river.client.shared.Transform2D;
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20
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21
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22 /**
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23 * Panel showing the mouse position in data space.
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24 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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25 */
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26 public class MousePositionPanel extends HLayout implements MouseMoveHandler {
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27
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28 /** Is associated to a ChartTab. */
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29 protected ChartOutputTab chartTab;
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30
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31 protected HLayout xLayout;
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32 protected ArrayList<HLayout> yLayouts;
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33
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34
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35 public MousePositionPanel(ChartOutputTab chartTab) {
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36 super();
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37
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38 this.chartTab = chartTab;
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39
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40 chartTab.getChartPanel().addMouseMoveHandler(this);
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41
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42 initLayout();
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43 }
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44
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45
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46 /**
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47 * Initializes the layout of this component. <b>Note:</b> This layout has a
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48 * fixed width of 195px plus a margin of 5px.
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49 */
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50 protected void initLayout() {
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51 setMembersMargin(5);
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52
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53 xLayout = null;
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54 yLayouts = new ArrayList<HLayout>();
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55 }
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56
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57
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58 /**
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59 * Listens to mouse move events to refresh the xy position.
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60 *
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61 * @param event The move event.
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62 */
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63 public void onMouseMove(MouseMoveEvent event) {
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64 updateMousePosition(event.getX(), event.getY());
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65 }
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68 /**
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69 * This method takes pixel coordinates, transforms those values into chart
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70 * coordinates using the Transform2D class and updates the mouse position.
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71 *
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72 * @param x The x part of the pixel.
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73 * @param y The y part of the pixel.
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74 */
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75 public void updateMousePosition(double x, double y) {
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76 int transformerCount = chartTab.getTransformerCount();
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77
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78 Canvas chart = chartTab.getChartPanel();
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79 int xOffset = chart.getPageLeft();
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80 int yOffset = chart.getPageTop();
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81
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82 x = x - xOffset;
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83 y = y - yOffset;
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84
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85 // Create Layout for x coordinates.
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86 if (xLayout == null){
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87 Label xDesc = new Label("Position: X = ");
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88 Label xLabel = new Label();
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89 xLayout = new HLayout();
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90 xLayout.setWidth(125);
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91 xLayout.addMember(xDesc);
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92 xLayout.addMember(xLabel);
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93 xDesc.setWidth(70);
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94 xLabel.setWidth(55);
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95 addMember(xLayout);
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96 }
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97
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98 for (int i = 0; i < transformerCount; i++) {
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99 HLayout yLayout = null;
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100 // If no layout exists for this y axis, create one.
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101 // else use the existing one.
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102 if (yLayouts.size() <= i) {
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103 Label yDesc = new Label("Y" + (i+1) + " = ");
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104 Label yLabel = new Label();
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105 yLayout = new HLayout();
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106 yLayout.setWidth(80);
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107 yLayout.addMember(yDesc);
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108 yLayout.addMember(yLabel);
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109 yDesc.setWidth(30);
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110 yLabel.setWidth(50);
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111 addMember(yLayout);
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112 yLayouts.add(i, yLayout);
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113 }
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114 else {
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115 yLayout = yLayouts.get(i);
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116 }
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117
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118 Transform2D transformer = chartTab.getTransformer(i);
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119
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120 if (transformer == null) {
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121 return;
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122 }
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123
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124 // Get the label for the coordinates.
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125 Canvas xLabel = xLayout.getMember(1);
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126 Canvas yLabel = yLayout.getMember(1);
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127
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0189d6b0973a Cosmetics, refac.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 3549
diff changeset
128 double[] xy = transformer.transform(x, y);
2477
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
129 String[] xyStr = transformer.format(new Number[] {
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
130 new Double(xy[0]), new Double(xy[1]) });
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
131 // Set the coordinates.
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
132 xLabel.setContents(xyStr[0]);
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
133 yLabel.setContents(xyStr[1]);
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
134 }
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
135
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
136 // Remove y coordinates.
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
137 if (yLayouts.size() > transformerCount) {
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
138 for (int i = yLayouts.size() - 1; i >= transformerCount; i--) {
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
139 removeMember(yLayouts.get(i));
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
140 yLayouts.remove(i);
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
141 }
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
142 }
534
e08777967bad Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
143 }
e08777967bad Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
144 }
e08777967bad Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
145 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org