Mercurial > dive4elements > river
annotate gwt-client/src/main/java/org/dive4elements/river/client/client/ui/chart/MousePositionPanel.java @ 7598:8580f222dfb2
Remove uneccessary debug output added in last commit.
author | Andre Heinecke <aheinecke@intevation.de> |
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date | Mon, 25 Nov 2013 14:59:21 +0100 |
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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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66 |
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67 |
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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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128 double[] xy = transformer.transform(x, y); |
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129 String[] xyStr = transformer.format(new Number[] { |
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130 new Double(xy[0]), new Double(xy[1]) }); |
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131 // Set the coordinates. |
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132 xLabel.setContents(xyStr[0]); |
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133 yLabel.setContents(xyStr[1]); |
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134 } |
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135 |
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136 // Remove y coordinates. |
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137 if (yLayouts.size() > transformerCount) { |
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138 for (int i = yLayouts.size() - 1; i >= transformerCount; i--) { |
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139 removeMember(yLayouts.get(i)); |
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140 yLayouts.remove(i); |
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141 } |
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142 } |
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143 } |
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144 } |
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145 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |