Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/chart/MousePositionPanel.java @ 4038:0189d6b0973a

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Cosmetics, refac.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Thu, 04 Oct 2012 16:43:18 +0200
parents 6a8f83c538e3
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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126 new Double(xy[0]), new Double(xy[1]) });
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
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127 // Set the coordinates.
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
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128 xLabel.setContents(xyStr[0]);
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
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129 yLabel.setContents(xyStr[1]);
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
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130 }
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
131
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
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
diff changeset
134 for (int i = yLayouts.size() - 1; i >= transformerCount; i--) {
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
135 removeMember(yLayouts.get(i));
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
136 yLayouts.remove(i);
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
137 }
936e3e6cd9b9 Issue 502.
Raimund Renkert <raimund.renkert@intevation.de>
parents: 1598
diff changeset
138 }
534
e08777967bad Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
139 }
e08777967bad Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
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