svn-gvsig-desktop / trunk / extensions / extRasterTools-SE / src / org / gvsig / raster / beans / previewbase / PreviewFiltering.java @ 19376
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2007 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*/
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package org.gvsig.raster.beans.previewbase; |
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import java.util.ArrayList; |
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import org.gvsig.raster.dataset.Params; |
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import org.gvsig.raster.grid.filter.FilterTypeException; |
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import org.gvsig.raster.grid.filter.IRasterFilterListManager; |
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import org.gvsig.raster.grid.filter.RasterFilter; |
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import org.gvsig.raster.grid.filter.RasterFilterList; |
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import org.gvsig.raster.grid.filter.RasterFilterListManager; |
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import org.gvsig.raster.hierarchy.IRasterRendering; |
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import org.gvsig.raster.util.RasterToolsUtil; |
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import com.iver.andami.PluginServices; |
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/**
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* Procesado de la imagen para la previsualizaci?n. Para poder usar esta clase despu?s de instanciarla
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* habr? que asignarle un valor a showFiltersSelected aunque por defecto est? a true por lo que se
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* visualizaran los cambios sin problemas, asigna una lista de filtros inicial (que ya tenga el raster
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* aplicado) con setFilterStatus y asignar los filtros que queramos aplicar con addNewParam (una llamada
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* por cada filtro).
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*
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* 19/02/2008
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* @author Nacho Brodin nachobrodin@gmail.com
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*/
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public class PreviewFiltering implements IPreviewRenderProcess { |
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private boolean showFiltersSelected = true; |
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private ArrayList paramsList = new ArrayList(); |
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private ArrayList filtersInit = new ArrayList(); |
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/**
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* Flag de selecci?n de activaci?n y desactivaci?n
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* @param show
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*/
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public void showFiltersSelected(boolean show) { |
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this.showFiltersSelected = show;
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} |
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/**
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* Obtiene la lista de par?metros
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* @return the paramsList
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*/
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public ArrayList getParamsList() { |
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return paramsList;
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} |
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/**
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* Asigna la lista de par?metros
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* @param params
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*/
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public void setParamsList(ArrayList params) { |
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this.paramsList = params;
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} |
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/**
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* Asigna el arrayList de filtros inicial. Esto hace que aplique los filtros que ya
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* existen en el raster. Estos pueden ser obtenidos del render de la capa de la forma
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* lyr.getRender().getFilterList().getStatusCloned().
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* @param params Lista de filtros aplicados.
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*/
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public void setFilterStatus(ArrayList filtersInit) { |
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this.filtersInit = filtersInit;
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} |
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/**
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* Devuelve el arrayList de filtros inicial
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* @return
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*/
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public ArrayList getFilterStatus() { |
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return filtersInit;
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} |
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/**
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* A?adir un nuevo Params a la lista de Params que podemos manejar. Un Params
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* equivale a un filtro cargado. El hecho de trabajar con Params y no con
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* filtros, simplifica totalmente el panel. Sin tener que depender de los
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* filtros nada m?s que para el momento de dibujado o guardado.
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* @param name
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* @param params
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* @param classFilter
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*/
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public void addNewParam(String name, Params params, Class classFilter) { |
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ParamStruct param = new ParamStruct();
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param.setFilterName(name); |
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param.setFilterParam(params); |
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param.setFilterClass(classFilter); |
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paramsList.add(param); |
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} |
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/**
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* Procesa la imagen con la lista de filtros si el flag showFilterSelected est? a true.
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* Esta funci?n llama a addFilter por cada filtro a?adido pero es applyFilters la encargada
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* de construir la lista.
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*/
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public void process(IRasterRendering rendering) throws FilterTypeException { |
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rendering.getRenderFilterList().clear(); |
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if (showFiltersSelected) {
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RasterFilterList filterList = rendering.getRenderFilterList(); |
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RasterFilterListManager stackManager = new RasterFilterListManager(filterList);
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ArrayList listFilterUsed = applyFilters(rendering);
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ArrayList exc = new ArrayList(); |
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for (int i = 0; i < listFilterUsed.size(); i++) { |
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IRasterFilterListManager filterManager = stackManager.getManagerByFilterClass(((ParamStruct) listFilterUsed.get(i)).getFilterClass()); |
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try {
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filterManager.addFilter(((ParamStruct) listFilterUsed.get(i)).getFilterClass(), ((ParamStruct) listFilterUsed.get(i)).getFilterParam()); |
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} catch (FilterTypeException e) {
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exc.add(e); |
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} |
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} |
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if(exc.size() != 0) { |
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RasterToolsUtil.messageBoxError(PluginServices.getText(this, "error_adding_filters"), this, exc); |
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exc.clear(); |
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} |
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} |
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} |
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/**
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* Aqui se seleccionan que filtros se van a aplicar y se devuelven en forma
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* de ArrayList tanto para el dibujado como cuando aceptan o aplican el panel.
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* @param rendering
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* @return
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*/
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public ArrayList applyFilters(IRasterRendering rendering) { |
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ArrayList listFilterUsed = new ArrayList(); |
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RasterFilterList filterList = new RasterFilterList();
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filterList.setEnv(rendering.getRenderFilterList().getEnv()); |
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RasterFilterListManager stackManager = new RasterFilterListManager(filterList);
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if(filtersInit == null) |
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return listFilterUsed;
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// Conservamos filtros ya existentes
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for (int i = 0; i < filtersInit.size(); i++) { |
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RasterFilter obj = null;
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for (int j = 0; j < stackManager.getRasterFilterList().size(); j++) { |
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Class classFilter = (Class) stackManager.getRasterFilterList().get(j); |
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try {
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obj = (RasterFilter) classFilter.newInstance(); |
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if (obj.getName().equals(((RasterFilter) filtersInit.get(i)).getName()))
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break;
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} catch (InstantiationException e) { |
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RasterToolsUtil.messageBoxError("error_creando_filtro", this, e); |
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} catch (IllegalAccessException e) { |
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RasterToolsUtil.messageBoxError("error_creando_filtro", this, e); |
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} |
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} |
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// Si no encontramos el filtro apropiado, nos olvidamos de el
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if (obj == null) |
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continue;
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// Si no es visible tenemos que conservar el filtro
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try {
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Params params = (Params) ((RasterFilter) filtersInit.get(i)).getUIParams(((RasterFilter) filtersInit.get(i)).getName()).clone(); |
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// A?ado el parametro RenderBands a los parametros del filtro
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String rgb = rendering.getRenderBands()[0] + " " + rendering.getRenderBands()[1] + " " + rendering.getRenderBands()[2]; |
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params.setParam("RenderBands", rgb, 0, null); |
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ParamStruct newParam = new ParamStruct();
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newParam.setFilterClass(obj.getClass()); |
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newParam.setFilterName(((RasterFilter) filtersInit.get(i)).getName()); |
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newParam.setFilterParam(params); |
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listFilterUsed.add(newParam); |
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} catch (CloneNotSupportedException e) { |
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} |
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} |
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// Metemos los filtros seleccionados en listFilterUsed
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for (int i = 0; i < paramsList.size(); i++) |
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listFilterUsed.add(paramsList.get(i)); |
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return listFilterUsed;
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} |
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} |