Mercurial > dive4elements > river
comparison flys-client/src/main/java/org/dive4elements/river/client/client/ui/chart/MousePositionPanel.java @ 5834:f507086aa94b
Repaired internal references.
| author | Sascha L. Teichmann <teichmann@intevation.de> |
|---|---|
| date | Thu, 25 Apr 2013 12:31:32 +0200 |
| parents | flys-client/src/main/java/de/intevation/flys/client/client/ui/chart/MousePositionPanel.java@651b93c10dc5 |
| children | 821a02bbfb4e |
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| 5833:a2bdc0f524e8 | 5834:f507086aa94b |
|---|---|
| 1 package de.intevation.flys.client.client.ui.chart; | |
| 2 | |
| 3 import java.util.ArrayList; | |
| 4 | |
| 5 import com.smartgwt.client.widgets.Canvas; | |
| 6 import com.smartgwt.client.widgets.Label; | |
| 7 import com.smartgwt.client.widgets.layout.HLayout; | |
| 8 import com.smartgwt.client.widgets.events.MouseMoveEvent; | |
| 9 import com.smartgwt.client.widgets.events.MouseMoveHandler; | |
| 10 | |
| 11 import de.intevation.flys.client.shared.Transform2D; | |
| 12 | |
| 13 | |
| 14 /** | |
| 15 * Panel showing the mouse position in data space. | |
| 16 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> | |
| 17 */ | |
| 18 public class MousePositionPanel extends HLayout implements MouseMoveHandler { | |
| 19 | |
| 20 /** Is associated to a ChartTab. */ | |
| 21 protected ChartOutputTab chartTab; | |
| 22 | |
| 23 protected HLayout xLayout; | |
| 24 protected ArrayList<HLayout> yLayouts; | |
| 25 | |
| 26 | |
| 27 public MousePositionPanel(ChartOutputTab chartTab) { | |
| 28 super(); | |
| 29 | |
| 30 this.chartTab = chartTab; | |
| 31 | |
| 32 chartTab.getChartPanel().addMouseMoveHandler(this); | |
| 33 | |
| 34 initLayout(); | |
| 35 } | |
| 36 | |
| 37 | |
| 38 /** | |
| 39 * Initializes the layout of this component. <b>Note:</b> This layout has a | |
| 40 * fixed width of 195px plus a margin of 5px. | |
| 41 */ | |
| 42 protected void initLayout() { | |
| 43 setMembersMargin(5); | |
| 44 | |
| 45 xLayout = null; | |
| 46 yLayouts = new ArrayList<HLayout>(); | |
| 47 } | |
| 48 | |
| 49 | |
| 50 /** | |
| 51 * Listens to mouse move events to refresh the xy position. | |
| 52 * | |
| 53 * @param event The move event. | |
| 54 */ | |
| 55 public void onMouseMove(MouseMoveEvent event) { | |
| 56 updateMousePosition(event.getX(), event.getY()); | |
| 57 } | |
| 58 | |
| 59 | |
| 60 /** | |
| 61 * This method takes pixel coordinates, transforms those values into chart | |
| 62 * coordinates using the Transform2D class and updates the mouse position. | |
| 63 * | |
| 64 * @param x The x part of the pixel. | |
| 65 * @param y The y part of the pixel. | |
| 66 */ | |
| 67 public void updateMousePosition(double x, double y) { | |
| 68 int transformerCount = chartTab.getTransformerCount(); | |
| 69 | |
| 70 Canvas chart = chartTab.getChartPanel(); | |
| 71 int xOffset = chart.getPageLeft(); | |
| 72 int yOffset = chart.getPageTop(); | |
| 73 | |
| 74 x = x - xOffset; | |
| 75 y = y - yOffset; | |
| 76 | |
| 77 // Create Layout for x coordinates. | |
| 78 if (xLayout == null){ | |
| 79 Label xDesc = new Label("Position: X = "); | |
| 80 Label xLabel = new Label(); | |
| 81 xLayout = new HLayout(); | |
| 82 xLayout.setWidth(125); | |
| 83 xLayout.addMember(xDesc); | |
| 84 xLayout.addMember(xLabel); | |
| 85 xDesc.setWidth(70); | |
| 86 xLabel.setWidth(55); | |
| 87 addMember(xLayout); | |
| 88 } | |
| 89 | |
| 90 for (int i = 0; i < transformerCount; i++) { | |
| 91 HLayout yLayout = null; | |
| 92 // If no layout exists for this y axis, create one. | |
| 93 // else use the existing one. | |
| 94 if (yLayouts.size() <= i) { | |
| 95 Label yDesc = new Label("Y" + (i+1) + " = "); | |
| 96 Label yLabel = new Label(); | |
| 97 yLayout = new HLayout(); | |
| 98 yLayout.setWidth(80); | |
| 99 yLayout.addMember(yDesc); | |
| 100 yLayout.addMember(yLabel); | |
| 101 yDesc.setWidth(30); | |
| 102 yLabel.setWidth(50); | |
| 103 addMember(yLayout); | |
| 104 yLayouts.add(i, yLayout); | |
| 105 } | |
| 106 else { | |
| 107 yLayout = yLayouts.get(i); | |
| 108 } | |
| 109 | |
| 110 Transform2D transformer = chartTab.getTransformer(i); | |
| 111 | |
| 112 if (transformer == null) { | |
| 113 return; | |
| 114 } | |
| 115 | |
| 116 // Get the label for the coordinates. | |
| 117 Canvas xLabel = xLayout.getMember(1); | |
| 118 Canvas yLabel = yLayout.getMember(1); | |
| 119 | |
| 120 double[] xy = transformer.transform(x, y); | |
| 121 String[] xyStr = transformer.format(new Number[] { | |
| 122 new Double(xy[0]), new Double(xy[1]) }); | |
| 123 // Set the coordinates. | |
| 124 xLabel.setContents(xyStr[0]); | |
| 125 yLabel.setContents(xyStr[1]); | |
| 126 } | |
| 127 | |
| 128 // Remove y coordinates. | |
| 129 if (yLayouts.size() > transformerCount) { | |
| 130 for (int i = yLayouts.size() - 1; i >= transformerCount; i--) { | |
| 131 removeMember(yLayouts.get(i)); | |
| 132 yLayouts.remove(i); | |
| 133 } | |
| 134 } | |
| 135 } | |
| 136 } | |
| 137 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |