Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/chart/MousePositionPanel.java @ 4205:0dd8963cec9c

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Set also the width of the GaugeTree when resizing the GaugePanel GWT is no longer able to calculate and set the correct width of the GaugeTree since the GaugeTree is added via a Canvas wrapper. Therefore set the width manually when resizing the GaugeTree.
author Björn Ricks <bjoern.ricks@intevation.de>
date Mon, 22 Oct 2012 15:33:16 +0200
parents 0189d6b0973a
children 651b93c10dc5
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.google.gwt.i18n.client.NumberFormat;
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6
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7 import com.smartgwt.client.widgets.Canvas;
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8 import com.smartgwt.client.widgets.Label;
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9 import com.smartgwt.client.widgets.layout.HLayout;
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10 import com.smartgwt.client.widgets.events.MouseMoveEvent;
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11 import com.smartgwt.client.widgets.events.MouseMoveHandler;
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12
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13 import de.intevation.flys.client.shared.Transform2D;
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14
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15
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16 /**
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17 * Panel showing the mouse position in data space.
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18 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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19 */
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20 public class MousePositionPanel extends HLayout implements MouseMoveHandler {
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21
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22 /** Is associated to a ChartTab. */
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23 protected ChartOutputTab chartTab;
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24
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25 protected HLayout xLayout;
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26 protected ArrayList<HLayout> yLayouts;
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29 public MousePositionPanel(ChartOutputTab chartTab) {
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30 super();
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31
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32 this.chartTab = chartTab;
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34 chartTab.getChartPanel().addMouseMoveHandler(this);
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35
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36 initLayout();
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37 }
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39
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40 /**
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41 * Initializes the layout of this component. <b>Note:</b> This layout has a
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42 * fixed width of 195px plus a margin of 5px.
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43 */
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44 protected void initLayout() {
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45 setMembersMargin(5);
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46
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47 xLayout = null;
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48 yLayouts = new ArrayList<HLayout>();
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49 }
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51
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52 /**
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53 * Listens to mouse move events to refresh the xy position.
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54 *
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55 * @param event The move event.
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56 */
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57 public void onMouseMove(MouseMoveEvent event) {
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58 updateMousePosition(event.getX(), event.getY());
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59 }
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62 /**
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63 * This method takes pixel coordinates, transforms those values into chart
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64 * coordinates using the Transform2D class and updates the mouse position.
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65 *
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66 * @param x The x part of the pixel.
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67 * @param y The y part of the pixel.
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68 */
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69 public void updateMousePosition(double x, double y) {
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70 int transformerCount = chartTab.getTransformerCount();
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71
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72 Canvas chart = chartTab.getChartPanel();
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73 int xOffset = chart.getPageLeft();
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74 int yOffset = chart.getPageTop();
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75
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76 x = x - xOffset;
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77 y = y - yOffset;
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78
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79 // Create Layout for x coordinates.
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80 if (xLayout == null){
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81 Label xDesc = new Label("Position: X = ");
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82 Label xLabel = new Label();
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83 xLayout = new HLayout();
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84 xLayout.setWidth(125);
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85 xLayout.addMember(xDesc);
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86 xLayout.addMember(xLabel);
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87 xDesc.setWidth(70);
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88 xLabel.setWidth(55);
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89 addMember(xLayout);
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90 }
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91
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92 ArrayList<String> yCoordinates = new ArrayList<String>();
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93 String xCoordinate = "";
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94 for (int i = 0; i < transformerCount; i++) {
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95 HLayout yLayout = null;
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96 // If no layout exists for this y axis, create one.
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97 // else use the existing one.
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98 if (yLayouts.size() <= i) {
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99 Label yDesc = new Label("Y" + (i+1) + " = ");
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100 Label yLabel = new Label();
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101 yLayout = new HLayout();
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102 yLayout.setWidth(80);
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103 yLayout.addMember(yDesc);
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104 yLayout.addMember(yLabel);
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105 yDesc.setWidth(30);
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106 yLabel.setWidth(50);
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107 addMember(yLayout);
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108 yLayouts.add(i, yLayout);
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109 }
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110 else {
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111 yLayout = yLayouts.get(i);
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112 }
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113
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114 Transform2D transformer = chartTab.getTransformer(i);
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115
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116 if (transformer == null) {
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117 return;
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118 }
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119
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120 // Get the label for the coordinates.
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121 Canvas xLabel = xLayout.getMember(1);
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122 Canvas yLabel = yLayout.getMember(1);
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123
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124 double[] xy = transformer.transform(x, y);
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125 String[] xyStr = transformer.format(new Number[] {
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Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
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126 new Double(xy[0]), new Double(xy[1]) });
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Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
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127 // Set the coordinates.
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Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
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128 xLabel.setContents(xyStr[0]);
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Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
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129 yLabel.setContents(xyStr[1]);
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Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
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130 }
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
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131
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
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132 // Remove y coordinates.
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
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133 if (yLayouts.size() > transformerCount) {
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
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134 for (int i = yLayouts.size() - 1; i >= transformerCount; i--) {
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
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135 removeMember(yLayouts.get(i));
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Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
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136 yLayouts.remove(i);
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
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137 }
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
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138 }
534
e08777967bad Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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139 }
e08777967bad Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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140 }
e08777967bad Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
141 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org