Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/chart/MousePositionPanel.java @ 1598:ef745bc6bed9

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Distinguish between numbers and dates while parsing chart info documents; the MousePosition panel now displays the position on date axes correctly. flys-client/trunk@3931 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Mon, 06 Feb 2012 14:43:27 +0000
parents 78907f0fb939
children 936e3e6cd9b9
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 com.google.gwt.i18n.client.NumberFormat;
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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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11 import de.intevation.flys.client.shared.Transform2D;
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14 /**
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15 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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16 */
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17 public class MousePositionPanel extends HLayout implements MouseMoveHandler {
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18
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19 protected ChartOutputTab chartTab;
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20
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21 protected NumberFormat nf;
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23 protected Label x;
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24 protected Label y;
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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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32 x = new Label();
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33 y = new Label();
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34
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35 nf = NumberFormat.getDecimalFormat();
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37 chartTab.getChartPanel().addMouseMoveHandler(this);
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39 initLayout();
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40 }
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43 /**
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44 * Initializes the layout of this component. <b>Note:</b> This layout has a
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45 * fixed width of 195px plus a margin of 5px.
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46 */
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47 protected void initLayout() {
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48 setMembersMargin(5);
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49
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50 Label xDesc = new Label("Position: X = ");
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51 Label yDesc = new Label("Y = ");
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52
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53 HLayout xLayout = new HLayout();
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54 xLayout.setWidth(125);
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55 xLayout.addMember(xDesc);
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56 xLayout.addMember(x);
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57
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58 HLayout yLayout = new HLayout();
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59 yLayout.setWidth(70);
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60 yLayout.addMember(yDesc);
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61 yLayout.addMember(y);
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62
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63 xDesc.setWidth(70);
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64 x.setWidth(55);
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65 yDesc.setWidth(20);
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66 y.setWidth(50);
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67
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68 addMember(xLayout);
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69 addMember(yLayout);
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70 }
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73 /**
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74 * /Updates the X value displayed in the <i>x</i> label.
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75 *
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76 * @param x the new x value.
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77 */
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78 public void setX(String x) {
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79 this.x.setContents(x);
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80 }
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83 /**
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84 * /Updates the Y value displayed in the <i>y</i> label.
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85 *
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86 * @param y the new y value.
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87 */
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88 public void setY(String y) {
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89 this.y.setContents(y);
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90 }
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93 /**
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94 * Listens to mouse move events to refresh the xy position.
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95 *
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96 * @param event The move event.
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97 */
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98 public void onMouseMove(MouseMoveEvent event) {
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99 updateMousePosition(event.getX(), event.getY());
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100 }
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103 /**
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104 * This method takes pixel coordinates, transforms those values into chart
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105 * coordinates using the Transform2D class and updates the mouse position.
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106 *
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107 * @param x The x part of the pixel.
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108 * @param y The y part of the pixel.
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109 */
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110 public void updateMousePosition(double x, double y) {
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111 Transform2D transformer = chartTab.getTransformer();
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112
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113 if (transformer == null) {
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114 return;
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115 }
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116
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117 Canvas chart = chartTab.getChartPanel();
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118 int xOffset = chart.getPageLeft();
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119 int yOffset = chart.getPageTop();
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120
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121 x = x - xOffset;
75df57220104 Adapted the MousePositionPanel to use the Transform2D object for computing the chart coordinates from image coordinates.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 534
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122 y = y - yOffset;
75df57220104 Adapted the MousePositionPanel to use the Transform2D object for computing the chart coordinates from image coordinates.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 534
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123
1598
ef745bc6bed9 Distinguish between numbers and dates while parsing chart info documents; the MousePosition panel now displays the position on date axes correctly.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 582
diff changeset
124 double[] xy = transformer.transform(x,y);
ef745bc6bed9 Distinguish between numbers and dates while parsing chart info documents; the MousePosition panel now displays the position on date axes correctly.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 582
diff changeset
125 String[] xyStr = transformer.format(new Number[] {
ef745bc6bed9 Distinguish between numbers and dates while parsing chart info documents; the MousePosition panel now displays the position on date axes correctly.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 582
diff changeset
126 new Double(xy[0]), new Double(xy[1]) });
538
75df57220104 Adapted the MousePositionPanel to use the Transform2D object for computing the chart coordinates from image coordinates.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 534
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127
1598
ef745bc6bed9 Distinguish between numbers and dates while parsing chart info documents; the MousePosition panel now displays the position on date axes correctly.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 582
diff changeset
128 setX(xyStr[0]);
ef745bc6bed9 Distinguish between numbers and dates while parsing chart info documents; the MousePosition panel now displays the position on date axes correctly.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 582
diff changeset
129 setY(xyStr[1]);
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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130 }
e08777967bad Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
131 }
e08777967bad Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
132 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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