Application: gvSIG desktop » gvSIG raster

/* gvSIG. Geographic Information System of the Valencian Government

*

* Copyright (C) 2007-2008 Infrastructures and Transports Department

* of the Valencian Government (CIT)

* 

* This program is free software; you can redistribute it and/or

* modify it under the terms of the GNU General Public License

* as published by the Free Software Foundation; either version 2

* of the License, or (at your option) any later version.

* 

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

* GNU General Public License for more details.

* 

* You should have received a copy of the GNU General Public License

* along with this program; if not, write to the Free Software

* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 

* MA  02110-1301, USA.

* 

*/

package org.gvsig.raster.tools.app.basic.tool.colortable.ui;

import java.util.ArrayList;

import java.util.List;

import javax.swing.JComponent;

import org.gvsig.andami.PluginServices;

import org.gvsig.fmap.dal.coverage.RasterLocator;

import org.gvsig.fmap.dal.coverage.datastruct.ColorItem;

import org.gvsig.fmap.dal.coverage.datastruct.ColorTableLibrary;

import org.gvsig.fmap.dal.coverage.datastruct.Params;

import org.gvsig.fmap.dal.coverage.exception.ColorTableException;

import org.gvsig.fmap.dal.coverage.exception.FilterManagerException;

import org.gvsig.fmap.dal.coverage.exception.FilterTypeException;

import org.gvsig.fmap.dal.coverage.grid.RasterFilter;

import org.gvsig.fmap.dal.coverage.grid.RasterFilterList;

import org.gvsig.fmap.dal.coverage.grid.RasterFilterListManager;

import org.gvsig.fmap.dal.coverage.store.props.ColorTable;

import org.gvsig.fmap.dal.coverage.util.PropertyEvent;

import org.gvsig.fmap.dal.coverage.util.PropertyListener;

import org.gvsig.gui.beans.imagenavigator.ImageUnavailableException;

import org.gvsig.raster.fmap.layers.FLyrRaster;

import org.gvsig.raster.swing.RasterSwingLibrary;

import org.gvsig.raster.swing.preview.DataSourcePreview;

import org.gvsig.raster.swing.preview.PreviewRenderProcess;

import org.gvsig.raster.tools.app.basic.RasterToolsUtil;

import org.gvsig.raster.tools.app.basic.tool.colortable.data.ColorTableData;

import org.gvsig.raster.tools.app.basic.tool.colortable.ui.library.ColorTableLibraryPanel;

import org.gvsig.raster.tools.app.basic.tool.colortable.ui.tabs.ColorTableUIListener;

import org.gvsig.raster.tools.app.basic.tool.colortable.ui.tabs.IColorTableUI;

/**

 * Listener generico para el panel de tablas de color, en el controlaremos el

 * refresco de la vista previa, los cambios en las tablas de color y la

 * finalizacion del panel.

 * 

 * @version 27/06/2007

 * @author BorSanZa - Borja S?nchez Zamorano (borja.sanchez@iver.es)

 */

public class ColorTableListener implements PropertyListener, ColorTableUIListener, PreviewRenderProcess {

        private ColorTablePanel colorTablePanel  = null;

        private FLyrRaster      previewLayer     = null;

        private ColorTableData  colorTableData   = null;

        private ArrayList<StatusComponent>       

                                statusList       = new ArrayList<StatusComponent>();

        private IColorTableUI   lastColorTableUI = null;

        private boolean         showPreview      = true;

        /**

         * Construye un ColorTableListener

         * @param colorTablePanel

         */

        public ColorTableListener(ColorTablePanel colorTablePanel, ColorTableData colorTableData) {

                this.colorTablePanel = colorTablePanel;

                this.colorTableData = colorTableData;

                getColorTableData().addValueChangedListener(this);

        }

        /**

         * Devuelve el panel de ColorTable

         * @return

         */

        private ColorTablePanel getColorTablePanel() {

                return colorTablePanel;

        }

        private ColorTableData getColorTableData() {

                return colorTableData;

        }

        /**

         * Asigna la capa raster de la vista

         * @param fLayer

         */

        public void setLayer(FLyrRaster fLayer) {

                if (fLayer instanceof FLyrRaster) {

                        try {

                                previewLayer = (FLyrRaster) fLayer.cloneLayer();

                        } catch (Exception e) {

                                RasterSwingLibrary.messageBoxError("preview_not_available", colorTablePanel, e);

                        }

                }

        }

        /**

         * Cierra la capa abierta para previsualizaci?n

         */

        public void closePreviewLayer() {

                if (previewLayer != null) {

                        previewLayer.setRemoveRasterFlag(true);

                        previewLayer.removeLayerListener(null);

                }

        }

        /**

         * Aqui se aplica el estado de las tablas de color al rendering pasado por

         * parametro

         * @param rendering

         * @return

         * @throws FilterTypeException

         * @throws FilterManagerException 

         */

        private void applyColorTable(FLyrRaster rendering, boolean isPreview) throws FilterTypeException, FilterManagerException {

                RasterFilterList filterList = rendering.getRender().getFilterList();

                RasterFilterListManager cManager = filterList.getManagerByID("ColorTable");

                filterList.remove("colortable");

                getColorTablePanel().getLayer().setLastLegend(null);

                if (getColorTableData().isEnabled()) {

                        filterList.remove("enhanced_stretch");

                        filterList.remove("tailTrim");

                        // Asignamos la transparencia del render actual al filterList

                        filterList.addEnvParam("Transparency", rendering.getRender().getRenderingTransparency());

                        Params params = filterList.createEmptyFilterParams();

                        ColorTable colorTable = getColorTableData().getColorTable();

                        params.setParam("colorTable", colorTable);

                        cManager.addFilter(params);

                        if (!isPreview) {

                                colorTable.compressPalette();

                                getColorTablePanel().getLayer().setLastLegend(colorTable);

                        }

                }

                for (int i = 0; i< filterList.lenght(); i++) {

                        ((RasterFilter) filterList.get(i)).setEnv(filterList.getEnv());

                }

                rendering.getRender().setFilterList(filterList);

        }

        /**

         * Acciones que se ejecutaran al haber presionado el bot?n aceptar o aplicar

         */

        public void accept() {

                try {

                        ColorTableLibrary tableLib = RasterLocator.getManager().getDataStructFactory().getColorTableLibrary();

                        applyColorTable(getColorTablePanel().getLayer(), false);

                        getColorTablePanel().getLayer().getMapContext().invalidate();

                        tableLib.save_to_1_1(ColorTableLibraryPanel.palettesPath, getColorTableData().getColorTable());

                } catch (FilterTypeException e) {

                        RasterSwingLibrary.messageBoxError(PluginServices.getText(this, "error_adding_filters"), this, e);

                } catch (FilterManagerException e) {

                        RasterSwingLibrary.messageBoxError(PluginServices.getText(this, "error_adding_filters"), this, e);

                }

        }

        public class StatusComponent {

                private JComponent object;

                private boolean enabled;

                public boolean isEnabled() {

                        return enabled;

                }

                public void setEnabled(boolean enabled) {

                        this.enabled = enabled;

                }

                public JComponent getObject() {

                        return object;

                }

                public void setObject(JComponent object) {

                        this.object = object;

                }

        }

        private void saveComponentsStatus(JComponent component) {

                // Guardar estado

                StatusComponent auxStatus = new StatusComponent();

                auxStatus.setEnabled(component.isEnabled());

                auxStatus.setObject(component);

                statusList.add(auxStatus);

                for (int i = 0; i < component.getComponentCount(); i++)

                        if (component.getComponent(i) instanceof JComponent)

                                saveComponentsStatus((JComponent) component.getComponent(i));

        }

        private void setEnabledRecursive(JComponent component, boolean enabled, int level) {

                if (enabled == true) {

                        boolean auxEnabled = false;

                        boolean finded = false;

                        // Buscar estado de dicho componente

                        for (int i = 0; i < statusList.size(); i++) {

                                StatusComponent auxStatus = (StatusComponent) statusList.get(i);

                                if (auxStatus.getObject() == component) {

                                        auxEnabled = auxStatus.isEnabled();

                                        statusList.remove(i);

                                        i--;

                                        finded = true;

                                        break;

                                }

                        }

                        // Asignar su estado

                        if (finded)

                                component.setEnabled(auxEnabled);

                } else {

                        // Si es la primera llamada, guardamos el estado de todos los componentes

                        if (level == 0)

                                saveComponentsStatus(component);

                        // Desactivar componente

                        component.setEnabled(false);

                }

                for (int i = 0; i < component.getComponentCount(); i++)

                        if (component.getComponent(i) instanceof JComponent)

                                setEnabledRecursive((JComponent) component.getComponent(i), enabled, level + 1);

        }        

        /**

         * Activa/Desactiva los componentes de las pesta?as segun la pesta?a selecionada

         * @param enabled

         */

        @SuppressWarnings("unused")

        private void setEnabledPanel(boolean enabled) {

                colorTablePanel.getGeneralPanel().setEnabledPanel(enabled);

                colorTablePanel.getPreviewBasePanel().getTabbedPane().setEnabled(enabled);

                setEnabledRecursive(getLastColorTableUI().getPanel(), enabled, 0);

                setEnabledRecursive(colorTablePanel.getPreviewBasePanel().getImageNavigator(), enabled, 0);

                setEnabledRecursive(colorTablePanel.getPanelListView(), enabled, 0);

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.rastertools.PropertyListener#actionValueChanged(org.gvsig.rastertools.PropertyEvent)

         */

        public void actionValueChanged(PropertyEvent e) {

                if (e.getName().equals("refreshPreview")) {

                        colorTablePanel.getPreviewBasePanel().refreshPreview();

                        return;

                }

                if (e.getName().equals("interpolated")) {

                        colorTablePanel.getColorTableLibraryPanel().setInterpolated(((Boolean) e.getValue()).booleanValue());

                        getColorTableData().getColorTable().setInterpolated(((Boolean) e.getValue()).booleanValue());

                        getColorTableData().refreshPreview();

                        getLastColorTableUI().setColorTable(getColorTableData().getColorTable());

                        return;

                }

                if (e.getName().equals("limits") ||

                                e.getName().equals("maxim") ||

                                e.getName().equals("minim")) {

                        if (getColorTableData().isLimitsEnabled()) {

                                double min = getColorTableData().getMinim();

                                double max = getColorTableData().getMaxim();

                                getLastColorTableUI().getColorTable().createColorTableInRange(min, max, false);

                                getLastColorTableUI().setColorTable(getLastColorTableUI().getColorTable());

                                getColorTableData().refreshPreview();

                        } else {

                                try {

                                        colorTablePanel.reloadPanelsFromLibraryPanel();

                                } catch (ColorTableException e1) {

                                        //Esta excepci?n ya se ha debido capturar en la carga del dialogo por lo que no deber?a darse

                                }

                        }

                        return;

                }

        }

        /**

         * Recarga la tabla de elementos

         * @param isNewSelection

         */

        public void refreshItems(boolean isNewSelection) {

                if (getColorTableData().getColorTable() == null)

                        return;

                if (isNewSelection)

                        getColorTableData().getColorTable().removeDuplicatedValues();

                getLastColorTableUI().setColorTable(getColorTableData().getColorTable());

        }

        /**

         * Pone en separaciones iguales todos los valores de la tabla seleccionada

         */

        public void equidistar() {

                ColorTable colorTable = getColorTableData().getColorTable();

                if (colorTable == null)

                        return;

                colorTable.removeDuplicatedValues();

                List<ColorItem> list = colorTable.getColorItems();

                double min2 = Double.POSITIVE_INFINITY;

                double max2 = Double.NEGATIVE_INFINITY;

                for (int i = 0; i < list.size(); i++) {

                        ColorItem colorItem = (ColorItem) list.get(i);

                        if (min2 > colorItem.getValue())

                                min2 = colorItem.getValue();

                        if (max2 < colorItem.getValue())

                                max2 = colorItem.getValue();

                }

                for (int i = 0; i < list.size(); i++) {

                        ColorItem colorItem = (ColorItem) list.get(i);

                        colorItem.setValue(min2 + (((max2 - min2) / (list.size() - 1)) * i));

                }

                refreshItems(true);

                getColorTableData().refreshPreview();

        }

        /**

         * @return the lastColorTableUI

         */

        private IColorTableUI getLastColorTableUI() {

                return lastColorTableUI;

        }

        /**

         * @param lastColorTableUI the lastColorTableUI to set

         */

        public void setLastColorTableUI(IColorTableUI lastColorTableUI) {

                this.lastColorTableUI = lastColorTableUI;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.rastertools.colortable.panels.ColorTableUIListener#actionColorTableUIChanged(org.gvsig.rastertools.colortable.panels.IColorTableUI)

         */

        public void actionColorTableUIChanged(IColorTableUI colorTableUI) {

                ColorTable colorTable = colorTablePanel.getColorTableLibraryPanel().getColorTableSelected();

                colorTable.createPaletteFromColorItems(colorTableUI.getColorTable().getColorItems(), false);

                colorTablePanel.getColorTableLibraryPanel().setColorTableSelected(colorTable);

                getColorTableData().setColorTable((ColorTable) colorTableUI.getColorTable().clone());

                getColorTableData().refreshPreview();

                //getLastColorTableUI().setColorTable(getColorTableData().getColorTable());

        }

        public void process(DataSourcePreview rendering) throws ImageUnavailableException {

                if(!showPreview)

                        throw new ImageUnavailableException(RasterToolsUtil.getText(this, "panel_preview_not_available"));

//                rendering.getRenderFilterList().pushStatus();

                try {

                        if(!(rendering.getSource() instanceof FLyrRaster))

                                return;

                        FLyrRaster lyr = (FLyrRaster)rendering.getSource();

                        applyColorTable(lyr, true);

                } catch (FilterTypeException e1) {

                        RasterSwingLibrary.messageBoxError(PluginServices.getText(this, "error_adding_filters"), this, e1);

                } catch (FilterManagerException e) {

                        RasterSwingLibrary.messageBoxError(PluginServices.getText(this, "error_adding_filters"), this, e);

                }

        }

        /**

         * Obtiene el flag que informa de si se est? mostrando la previsualizaci?n o no.

         * En caso de no mostrarse se lanza una excepci?n ImageUnavailableExcepcion con el 

         * mensaje "La previsualizaci?n no est? disponible para este panel"

         * @return

         */

        public boolean isShowPreview() {

                return showPreview;

        }

        /**

         * Asigna el flag para mostrar u ocultar la preview. En caso de no mostrarse se lanza una 

         * excepci?n ImageUnavailableExcepcion con el mensaje "La previsualizaci?n no est? disponible para

         * este panel"

         * @param showPreview

         */

        public void setShowPreview(boolean showPreview) {

                this.showPreview = showPreview;

        }

}