Mercurial > dive4elements > river

annotate flys-client/src/main/java/org/dive4elements/river/client/client/ui/chart/MousePositionPanel.java @ 5834:f507086aa94b

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Repaired internal references.
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 25 Apr 2013 12:31:32 +0200
parents flys-client/src/main/java/de/intevation/flys/client/client/ui/chart/MousePositionPanel.java@651b93c10dc5
children 821a02bbfb4e
rev   line source
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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.ArrayList;
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4
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5 import com.smartgwt.client.widgets.Canvas;
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6 import com.smartgwt.client.widgets.Label;
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7 import com.smartgwt.client.widgets.layout.HLayout;
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8 import com.smartgwt.client.widgets.events.MouseMoveEvent;
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9 import com.smartgwt.client.widgets.events.MouseMoveHandler;
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10
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11 import de.intevation.flys.client.shared.Transform2D;
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12
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13
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14 /**
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15 * Panel showing the mouse position in data space.
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16 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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17 */
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18 public class MousePositionPanel extends HLayout implements MouseMoveHandler {
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19
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20 /** Is associated to a ChartTab. */
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21 protected ChartOutputTab chartTab;
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22
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23 protected HLayout xLayout;
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24 protected ArrayList<HLayout> yLayouts;
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26
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27 public MousePositionPanel(ChartOutputTab chartTab) {
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28 super();
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29
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30 this.chartTab = chartTab;
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31
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32 chartTab.getChartPanel().addMouseMoveHandler(this);
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33
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34 initLayout();
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35 }
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36
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37
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38 /**
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39 * Initializes the layout of this component. <b>Note:</b> This layout has a
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40 * fixed width of 195px plus a margin of 5px.
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41 */
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42 protected void initLayout() {
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43 setMembersMargin(5);
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44
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45 xLayout = null;
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46 yLayouts = new ArrayList<HLayout>();
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47 }
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50 /**
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51 * Listens to mouse move events to refresh the xy position.
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52 *
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53 * @param event The move event.
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54 */
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55 public void onMouseMove(MouseMoveEvent event) {
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56 updateMousePosition(event.getX(), event.getY());
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57 }
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60 /**
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61 * This method takes pixel coordinates, transforms those values into chart
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62 * coordinates using the Transform2D class and updates the mouse position.
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63 *
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64 * @param x The x part of the pixel.
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65 * @param y The y part of the pixel.
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66 */
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67 public void updateMousePosition(double x, double y) {
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68 int transformerCount = chartTab.getTransformerCount();
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69
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70 Canvas chart = chartTab.getChartPanel();
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71 int xOffset = chart.getPageLeft();
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72 int yOffset = chart.getPageTop();
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73
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74 x = x - xOffset;
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75 y = y - yOffset;
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76
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77 // Create Layout for x coordinates.
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78 if (xLayout == null){
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79 Label xDesc = new Label("Position: X = ");
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80 Label xLabel = new Label();
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81 xLayout = new HLayout();
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82 xLayout.setWidth(125);
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83 xLayout.addMember(xDesc);
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84 xLayout.addMember(xLabel);
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85 xDesc.setWidth(70);
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86 xLabel.setWidth(55);
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87 addMember(xLayout);
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88 }
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89
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90 for (int i = 0; i < transformerCount; i++) {
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91 HLayout yLayout = null;
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92 // If no layout exists for this y axis, create one.
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93 // else use the existing one.
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94 if (yLayouts.size() <= i) {
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95 Label yDesc = new Label("Y" + (i+1) + " = ");
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96 Label yLabel = new Label();
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97 yLayout = new HLayout();
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98 yLayout.setWidth(80);
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99 yLayout.addMember(yDesc);
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100 yLayout.addMember(yLabel);
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101 yDesc.setWidth(30);
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102 yLabel.setWidth(50);
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103 addMember(yLayout);
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104 yLayouts.add(i, yLayout);
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105 }
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106 else {
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107 yLayout = yLayouts.get(i);
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108 }
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109
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110 Transform2D transformer = chartTab.getTransformer(i);
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111
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112 if (transformer == null) {
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113 return;
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114 }
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115
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116 // Get the label for the coordinates.
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117 Canvas xLabel = xLayout.getMember(1);
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118 Canvas yLabel = yLayout.getMember(1);
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119
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120 double[] xy = transformer.transform(x, y);
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121 String[] xyStr = transformer.format(new Number[] {
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122 new Double(xy[0]), new Double(xy[1]) });
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123 // Set the coordinates.
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124 xLabel.setContents(xyStr[0]);
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125 yLabel.setContents(xyStr[1]);
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126 }
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Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
127
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
128 // Remove y coordinates.
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
129 if (yLayouts.size() > transformerCount) {
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
130 for (int i = yLayouts.size() - 1; i >= transformerCount; i--) {
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
131 removeMember(yLayouts.get(i));
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
132 yLayouts.remove(i);
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
133 }
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
134 }
534
e08777967bad Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
135 }
e08777967bad Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
136 }
e08777967bad Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
137 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org