Mercurial > dive4elements > river
annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/chart/MousePositionPanel.java @ 4433:5b8919ef601d
Backed out changeset e8a4d2fd25cc
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Wed, 07 Nov 2012 12:23:41 +0100 |
parents | 651b93c10dc5 |
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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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48 |
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49 |
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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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58 |
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59 |
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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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Raimund Renkert <raimund.renkert@intevation.de>
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110 Transform2D transformer = chartTab.getTransformer(i); |
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Raimund Renkert <raimund.renkert@intevation.de>
parents:
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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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Raimund Renkert <raimund.renkert@intevation.de>
parents:
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115 |
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parents:
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116 // Get the label for the coordinates. |
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parents:
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117 Canvas xLabel = xLayout.getMember(1); |
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parents:
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118 Canvas yLabel = yLayout.getMember(1); |
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parents:
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119 |
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Cosmetics, refac.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents:
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120 double[] xy = transformer.transform(x, y); |
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parents:
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121 String[] xyStr = transformer.format(new Number[] { |
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parents:
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122 new Double(xy[0]), new Double(xy[1]) }); |
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parents:
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123 // Set the coordinates. |
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parents:
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124 xLabel.setContents(xyStr[0]); |
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parents:
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125 yLabel.setContents(xyStr[1]); |
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126 } |
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parents:
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127 |
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128 // Remove y coordinates. |
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parents:
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129 if (yLayouts.size() > transformerCount) { |
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130 for (int i = yLayouts.size() - 1; i >= transformerCount; i--) { |
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131 removeMember(yLayouts.get(i)); |
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132 yLayouts.remove(i); |
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133 } |
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134 } |
534
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Added a first implementation of a MousePositionPanel - work is not finished yet.
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135 } |
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Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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136 } |
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Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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137 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |