Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/chart/MousePositionPanel.java @ 539:fea93eebd2fa

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Improved the layout of the mouse position panel. flys-client/trunk@2039 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 01 Jun 2011 11:59:59 +0000
parents 75df57220104
children 78907f0fb939
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.types.Alignment;
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6 import com.smartgwt.client.widgets.Canvas;
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7 import com.smartgwt.client.widgets.Label;
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8 import com.smartgwt.client.widgets.layout.HLayout;
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9 import com.smartgwt.client.widgets.events.MouseMoveEvent;
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10 import com.smartgwt.client.widgets.events.MouseMoveHandler;
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12 import de.intevation.flys.client.shared.Transform2D;
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14
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15 /**
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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 protected ChartOutputTab chartTab;
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21
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22 protected NumberFormat nf;
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23
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24 protected Label x;
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25 protected Label y;
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27
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28 public MousePositionPanel(ChartOutputTab chartTab) {
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29 super();
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31 this.chartTab = chartTab;
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32
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33 x = new Label();
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34 y = new Label();
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35
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36 nf = NumberFormat.getDecimalFormat();
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37
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38 chartTab.getChartPanel().addMouseMoveHandler(this);
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39
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40 initLayout();
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41 }
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44 /**
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45 * Initializes the layout of this component. <b>Note:</b> This layout has a
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46 * fixed width of 195px plus a margin of 5px.
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47 */
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48 protected void initLayout() {
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49 setMembersMargin(5);
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50
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51 Label xDesc = new Label("Position: X = ");
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52 Label yDesc = new Label("Y = ");
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53
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54 HLayout xLayout = new HLayout();
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55 xLayout.setWidth(125);
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56 xLayout.addMember(xDesc);
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57 xLayout.addMember(x);
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58
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59 HLayout yLayout = new HLayout();
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60 yLayout.setWidth(70);
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61 yLayout.addMember(yDesc);
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62 yLayout.addMember(y);
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63
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64 xDesc.setWidth(70);
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65 x.setWidth(55);
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66 yDesc.setWidth(20);
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67 y.setWidth(50);
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68
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69 addMember(xLayout);
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70 addMember(yLayout);
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71 }
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74 /**
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75 * /Updates the X value displayed in the <i>x</i> label.
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76 *
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77 * @param x the new x value.
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78 */
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79 public void setX(double x) {
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80 this.x.setContents(nf.format(x));
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81 }
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84 /**
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85 * /Updates the Y value displayed in the <i>y</i> label.
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86 *
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87 * @param y the new y value.
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88 */
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89 public void setY(double y) {
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90 this.y.setContents(nf.format(y));
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91 }
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94 /**
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95 * Listens to mouse move events to refresh the xy position.
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96 *
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97 * @param event The move event.
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98 */
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99 public void onMouseMove(MouseMoveEvent event) {
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100 updateMousePosition(event.getX(), event.getY());
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101 }
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104 /**
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105 * This method takes pixel coordinates, transforms those values into chart
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106 * coordinates using the Transform2D class and updates the mouse position.
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107 *
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108 * @param x The x part of the pixel.
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109 * @param y The y part of the pixel.
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110 */
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111 public void updateMousePosition(double x, double y) {
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112 Transform2D transformer = chartTab.getTransformer();
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113
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114 if (transformer == null) {
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115 return;
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116 }
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117
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118 Canvas chart = chartTab.getChartPanel();
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119 int xOffset = chart.getPageLeft();
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120 int yOffset = chart.getPageTop();
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121
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diff changeset
122 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
diff changeset
123 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
diff changeset
124
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
diff changeset
125 double[] xy = transformer.transform(x,y);
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
diff changeset
126
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
diff changeset
127 setX(xy[0]);
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
diff changeset
128 setY(xy[1]);
534
e08777967bad Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
129 }
e08777967bad Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
130 }
e08777967bad Added a first implementation of a MousePositionPanel - work is not finished yet.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
131 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org