svn-gvsig-desktop / tags / v1_0_2_Build_909 / libraries / libFMap / src / com / iver / cit / gvsig / fmap / layers / layerOperations / ComposedLayer.java @ 11150
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| 1 | 10932 | jmvivo | package com.iver.cit.gvsig.fmap.layers.layerOperations; |
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| 3 | import java.awt.Graphics2D; |
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| 4 | import java.awt.image.BufferedImage; |
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| 5 | 11125 | jmvivo | import java.util.ArrayList; |
| 6 | import java.util.Collection; |
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| 7 | import java.util.Iterator; |
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| 8 | 10932 | jmvivo | |
| 9 | 11030 | jmvivo | import com.iver.cit.gvsig.fmap.DriverException; |
| 10 | 11125 | jmvivo | import com.iver.cit.gvsig.fmap.MapContext; |
| 11 | 10932 | jmvivo | import com.iver.cit.gvsig.fmap.ViewPort; |
| 12 | import com.iver.cit.gvsig.fmap.layers.FLayer; |
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| 13 | 11125 | jmvivo | import com.iver.cit.gvsig.fmap.layers.LayerDrawEvent; |
| 14 | 10932 | jmvivo | import com.iver.utiles.swing.threads.Cancellable; |
| 15 | |||
| 16 | /**
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| 17 | 11125 | jmvivo | * Abstract class for the classes that make able
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| 18 | 10932 | jmvivo | * a single draw for a layers group
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| 19 | *
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| 20 | * @see com.iver.cit.gvsig.fmap.layers.FLayer#newComposedLayer()
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| 21 | */
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| 22 | 11125 | jmvivo | public abstract class ComposedLayer { |
| 23 | 10932 | jmvivo | |
| 24 | 11125 | jmvivo | ArrayList pendingLayersEvents= new ArrayList(); |
| 25 | MapContext mapContext = null;
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| 26 | |||
| 27 | public ComposedLayer(){
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| 28 | |||
| 29 | } |
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| 30 | |||
| 31 | public void setMapContext(MapContext mapContext) { |
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| 32 | this.mapContext = mapContext;
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| 33 | } |
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| 34 | |||
| 35 | 10932 | jmvivo | /**
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| 36 | * Checks if the layer can be added to this group
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| 37 | *
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| 38 | * @param layer
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| 39 | * @return layer can be added or not
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| 40 | */
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| 41 | 11125 | jmvivo | public abstract boolean canAdd(FLayer layer); |
| 42 | 10932 | jmvivo | |
| 43 | /**
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| 44 | 11125 | jmvivo | * Adds the layer to the draw group.
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| 45 | * You have to implements the doAdd(FLayer) method.
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| 46 | *
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| 47 | *
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| 48 | 10932 | jmvivo | * @see com.iver.cit.gvsig.fmap.layers.layerOperations.ComposedLayer#canAdd(FLayer)
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| 49 | *
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| 50 | * @param layer
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| 51 | * @throws Exception
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| 52 | */
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| 53 | 11125 | jmvivo | public final void add(FLayer layer) throws Exception { |
| 54 | if (this.mapContext == null){ |
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| 55 | this.mapContext =layer.getMapContext();
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| 56 | } |
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| 57 | doAdd(layer); |
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| 58 | pendingLayersEvents.add(layer); |
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| 59 | } |
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| 60 | 10932 | jmvivo | |
| 61 | /**
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| 62 | * Draws all the group in one pass
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| 63 | 11125 | jmvivo | * You have to implements the doDraw method.
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| 64 | 10932 | jmvivo | *
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| 65 | * @see com.iver.cit.gvsig.fmap.layers.FLayer#draw(BufferedImage, Graphics2D, ViewPort, Cancellable, double)
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| 66 | */
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| 67 | 11125 | jmvivo | public final void draw(BufferedImage image, Graphics2D g, ViewPort viewPort, |
| 68 | Cancellable cancel,double scale) throws DriverException { |
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| 69 | doDraw(image, g, viewPort, cancel, scale); |
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| 70 | fireLayerDrawingEvents(g,viewPort); |
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| 71 | pendingLayersEvents.clear(); |
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| 72 | } |
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| 73 | |||
| 74 | /**
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| 75 | * Fires the event LayerDrawEvent.LAYER_AFTER_DRAW for every
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| 76 | * layers of the group.
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| 77 | *
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| 78 | *
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| 79 | * @see com.iver.cit.gvsig.fmap.layers.LayerDrawEvent
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| 80 | *
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| 81 | */
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| 82 | private void fireLayerDrawingEvents(Graphics2D g, ViewPort viewPort) { |
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| 83 | Iterator iter = pendingLayersEvents.iterator();
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| 84 | LayerDrawEvent afterEvent; |
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| 85 | FLayer layer = null ;
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| 86 | while (iter.hasNext()) {
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| 87 | layer =(FLayer)iter.next(); |
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| 88 | afterEvent = new LayerDrawEvent(layer, g, viewPort, LayerDrawEvent.LAYER_AFTER_DRAW);
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| 89 | System.out.println("+++ evento " + afterEvent.getLayer().getName()); |
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| 90 | mapContext.fireLayerDrawingEvent(afterEvent); |
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| 91 | } |
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| 92 | } |
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| 93 | |||
| 94 | 10932 | jmvivo | |
| 95 | 11125 | jmvivo | /**
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| 96 | * Adds the layer to the draw group.
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| 97 | * Specific implementation.
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| 98 | *
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| 99 | * @see com.iver.cit.gvsig.fmap.layers.layerOperations.ComposedLayer#add(FLayer)
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| 100 | *
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| 101 | * @see com.iver.cit.gvsig.fmap.layers.layerOperations.ComposedLayer#canAdd(FLayer)
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| 102 | *
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| 103 | * @param layer
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| 104 | * @throws Exception
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| 105 | */
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| 106 | protected abstract void doAdd(FLayer layer) throws Exception ; |
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| 107 | 10932 | jmvivo | |
| 108 | 11125 | jmvivo | /**
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| 109 | * Draws all the group in one pass.
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| 110 | * Specific implementation.
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| 111 | *
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| 112 | * @see com.iver.cit.gvsig.fmap.layers.layerOperations.ComposedLayer#draw(BufferedImage, Graphics2D, ViewPort, Cancellable, double)
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| 113 | *
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| 114 | * @see com.iver.cit.gvsig.fmap.layers.FLayer#draw(BufferedImage, Graphics2D, ViewPort, Cancellable, double)
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| 115 | */
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| 116 | protected abstract void doDraw(BufferedImage image, Graphics2D g, ViewPort viewPort, |
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| 117 | Cancellable cancel,double scale) throws DriverException ; |
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| 118 | |||
| 119 | |||
| 120 | 10932 | jmvivo | } |