svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.mapcontext / org.gvsig.fmap.mapcontext.api / src / main / java / org / gvsig / fmap / mapcontext / layers / operations / ComposedLayer.java @ 40559
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1 | 40559 | jjdelcerro | /**
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2 | * gvSIG. Desktop Geographic Information System.
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3 | *
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4 | * Copyright (C) 2007-2013 gvSIG Association.
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5 | *
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6 | * This program is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU General Public License
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8 | * as published by the Free Software Foundation; either version 3
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9 | * of the License, or (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 | * MA 02110-1301, USA.
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20 | *
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21 | * For any additional information, do not hesitate to contact us
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22 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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23 | */
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24 | 40435 | jjdelcerro | package org.gvsig.fmap.mapcontext.layers.operations; |
25 | |||
26 | import java.awt.Graphics2D; |
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27 | import java.awt.image.BufferedImage; |
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28 | import java.util.ArrayList; |
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29 | import java.util.Iterator; |
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30 | |||
31 | import org.gvsig.compat.print.PrintAttributes; |
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32 | import org.gvsig.fmap.dal.exception.ReadException; |
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33 | import org.gvsig.fmap.mapcontext.MapContext; |
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34 | import org.gvsig.fmap.mapcontext.ViewPort; |
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35 | import org.gvsig.fmap.mapcontext.layers.FLayer; |
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36 | import org.gvsig.fmap.mapcontext.layers.LayerDrawEvent; |
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37 | import org.gvsig.tools.task.Cancellable; |
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38 | |||
39 | /**
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40 | * Abstract class for the classes that make able
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41 | * a single draw for a layers group
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42 | *
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43 | * @see org.gvsig.fmap.mapcontext.layers.FLayer#newComposedLayer()
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44 | */
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45 | public abstract class ComposedLayer { |
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46 | |||
47 | ArrayList pendingLayersEvents= new ArrayList(); |
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48 | MapContext mapContext = null;
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49 | |||
50 | public ComposedLayer(){
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51 | |||
52 | } |
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53 | |||
54 | public void setMapContext(MapContext mapContext) { |
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55 | this.mapContext = mapContext;
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56 | } |
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57 | |||
58 | /**
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59 | * Checks if the layer can be added to this group
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60 | *
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61 | * @param layer
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62 | * @return layer can be added or not
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63 | */
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64 | public abstract boolean canAdd(FLayer layer); |
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65 | |||
66 | /**
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67 | * Adds the layer to the draw group.
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68 | * You have to implements the doAdd(FLayer) method.
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69 | *
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70 | *
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71 | * @see org.gvsig.fmap.mapcontext.layers.operations.ComposedLayer#canAdd(FLayer)
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72 | *
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73 | * @param layer
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74 | * @throws Exception
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75 | */
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76 | public final void add(FLayer layer) throws Exception { |
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77 | if (this.mapContext == null){ |
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78 | this.mapContext =layer.getMapContext();
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79 | } |
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80 | doAdd(layer); |
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81 | pendingLayersEvents.add(layer); |
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82 | } |
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83 | |||
84 | /**
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85 | * Draws all the group in one pass
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86 | * You have to implements the doDraw method.
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87 | *
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88 | * @see org.gvsig.fmap.mapcontext.layers.FLayer#draw(BufferedImage, Graphics2D, ViewPort, Cancellable, double)
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89 | */
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90 | public final void draw(BufferedImage image, Graphics2D g, ViewPort viewPort, |
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91 | Cancellable cancel,double scale) throws ReadException { |
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92 | fireLayerDrawingEvents(g,viewPort, LayerDrawEvent.LAYER_BEFORE_DRAW); |
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93 | doDraw(image, g, viewPort, cancel, scale); |
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94 | fireLayerDrawingEvents(g,viewPort, LayerDrawEvent.LAYER_AFTER_DRAW); |
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95 | pendingLayersEvents.clear(); |
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96 | } |
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97 | |||
98 | /**
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99 | * Prints all the group in one pass
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100 | * You have to implements the doDraw method.
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101 | *
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102 | * @see org.gvsig.fmap.mapcontext.layers.FLayer#draw(BufferedImage, Graphics2D, ViewPort, Cancellable, double)
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103 | */
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104 | public final void print(Graphics2D g, ViewPort viewPort, |
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105 | Cancellable cancel,double scale,PrintAttributes properties) throws ReadException { |
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106 | doPrint(g, viewPort, cancel, scale,properties); |
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107 | pendingLayersEvents.clear(); |
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108 | } |
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109 | |||
110 | /**
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111 | * Fires the event LayerDrawEvent.LAYER_AFTER_DRAW for every
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112 | * layers of the group.
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113 | *
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114 | *
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115 | * @see org.gvsig.fmap.mapcontext.layers.LayerDrawEvent
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116 | *
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117 | */
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118 | private void fireLayerDrawingEvents(Graphics2D g, ViewPort viewPort, int eventType) { |
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119 | Iterator iter = pendingLayersEvents.iterator();
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120 | LayerDrawEvent afterEvent; |
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121 | FLayer layer = null ;
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122 | while (iter.hasNext()) {
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123 | layer =(FLayer)iter.next(); |
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124 | afterEvent = new LayerDrawEvent(layer, g, viewPort, eventType);
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125 | // System.out.println("+++ evento " + afterEvent.getLayer().getName());
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126 | mapContext.fireLayerDrawingEvent(afterEvent); |
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127 | } |
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128 | } |
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129 | |||
130 | |||
131 | /**
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132 | * Adds the layer to the draw group.
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133 | * Specific implementation.
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134 | *
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135 | * @see org.gvsig.fmap.mapcontext.layers.operations.ComposedLayer#add(FLayer)
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136 | *
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137 | * @see org.gvsig.fmap.mapcontext.layers.operations.ComposedLayer#canAdd(FLayer)
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138 | *
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139 | * @param layer
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140 | * @throws Exception
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141 | */
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142 | protected abstract void doAdd(FLayer layer) throws Exception ; |
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143 | |||
144 | /**
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145 | * Draws all the group in one pass.
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146 | * Specific implementation.
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147 | *
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148 | * @see org.gvsig.fmap.mapcontext.layers.operations.ComposedLayer#draw(BufferedImage, Graphics2D, ViewPort, Cancellable, double)
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149 | *
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150 | * @see org.gvsig.fmap.mapcontext.layers.FLayer#draw(BufferedImage, Graphics2D, ViewPort, Cancellable, double)
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151 | */
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152 | protected abstract void doDraw(BufferedImage image, Graphics2D g, ViewPort viewPort, |
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153 | Cancellable cancel,double scale) throws ReadException ; |
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154 | |||
155 | /**
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156 | * Prints all the group in one pass.
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157 | * Specific implementation.
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158 | *
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159 | * @see org.gvsig.fmap.mapcontext.layers.operations.ComposedLayer#print(Graphics2D, ViewPort, Cancellable, double)
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160 | *
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161 | * @see org.gvsig.fmap.mapcontext.layers.FLayer#print(Graphics2D, ViewPort, Cancellable, double)
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162 | */
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163 | protected abstract void doPrint(Graphics2D g, ViewPort viewPort, |
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164 | Cancellable cancel,double scale,PrintAttributes properties) throws ReadException ; |
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165 | |||
166 | } |