/*
* JGrass - Free Open Source Java GIS http://www.jgrass.org
* (C) HydroloGIS - www.hydrologis.com
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* (http://www.eclipse.org/legal/epl-v10.html), and the HydroloGIS BSD
* License v1.0 (http://udig.refractions.net/files/hsd3-v10.html).
*/
package org.locationtech.udig.style.advanced.lines;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.List;
import org.locationtech.udig.ui.graphics.AWTSWTImageUtils;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.Text;
import org.geotools.styling.Style;
import org.locationtech.udig.style.advanced.StylePlugin;
import org.locationtech.udig.style.advanced.common.StyleFilter;
import org.locationtech.udig.style.advanced.common.StyleManager;
import org.locationtech.udig.style.advanced.common.styleattributeclasses.FeatureTypeStyleWrapper;
import org.locationtech.udig.style.advanced.common.styleattributeclasses.RuleWrapper;
import org.locationtech.udig.style.advanced.common.styleattributeclasses.StyleWrapper;
import org.locationtech.udig.style.advanced.utils.Utilities;
/**
* A style viewer that manages {@link Style}s.
*
* @author Andrea Antonello (www.hydrologis.com)
*/
public class LineStyleManager extends StyleManager{
/**
* Creates a new style manager pointing to the default preferences folder for style.
*/
public LineStyleManager() {
IPath stateLocation = StylePlugin.getDefault().getStateLocation();
File stateLocationFile = stateLocation.toFile();
styleFolderFile = new File(stateLocationFile, LINESTYLEFOLDER);
if (!styleFolderFile.exists()) {
styleFolderFile.mkdirs();
}
}
/**
* Creates the style viewer panel.
*
* @param parent the parent {@link Composite}.
*/
public void init( Composite parent ) {
createStylesTableViewer(parent);
reloadStyleFolder();
}
private TableViewer createStylesTableViewer( Composite parent ) {
final StyleFilter filter = new StyleFilter();
final Text searchText = new Text(parent, SWT.BORDER | SWT.SEARCH);
searchText.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL));
searchText.addKeyListener(new KeyAdapter(){
public void keyReleased( KeyEvent ke ) {
filter.setSearchText(searchText.getText());
stylesViewer.refresh();
}
});
stylesViewer = new TableViewer(parent, SWT.SINGLE | SWT.BORDER);
Table table = stylesViewer.getTable();
GridData tableGD = new GridData(SWT.FILL, SWT.FILL, true, true);
tableGD.heightHint = 200;
table.setLayoutData(tableGD);
stylesViewer.addFilter(filter);
stylesViewer.setContentProvider(new IStructuredContentProvider(){
public Object[] getElements( Object inputElement ) {
if (inputElement instanceof List< ? >) {
List< ? > styles = (List< ? >) inputElement;
StyleWrapper[] array = (StyleWrapper[]) styles.toArray(new StyleWrapper[styles.size()]);
return array;
}
return null;
}
public void dispose() {
}
public void inputChanged( Viewer viewer, Object oldInput, Object newInput ) {
}
});
stylesViewer.setLabelProvider(new LabelProvider(){
public Image getImage( Object element ) {
if (element instanceof StyleWrapper) {
StyleWrapper styleWrapper = (StyleWrapper) element;
List<FeatureTypeStyleWrapper> featureTypeStylesWrapperList = styleWrapper.getFeatureTypeStylesWrapperList();
int iconSize = 48;
BufferedImage image = new BufferedImage(iconSize, iconSize, BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = image.createGraphics();
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
for( FeatureTypeStyleWrapper featureTypeStyle : featureTypeStylesWrapperList ) {
List<RuleWrapper> rulesWrapperList = featureTypeStyle.getRulesWrapperList();
BufferedImage tmpImage = Utilities.lineRulesWrapperToImage(rulesWrapperList, iconSize, iconSize);
g2d.drawImage(tmpImage, 0, 0, null);
}
g2d.dispose();
Image convertToSWTImage = AWTSWTImageUtils.convertToSWTImage(image);
return convertToSWTImage;
}
return null;
}
public String getText( Object element ) {
if (element instanceof StyleWrapper) {
StyleWrapper styleWrapper = (StyleWrapper) element;
String styleName = styleWrapper.getName();
if (styleName == null || styleName.length() == 0) {
styleName = Utilities.DEFAULT_STYLENAME;
styleName = Utilities.checkSameNameStyle(getStyles(), styleName);
styleWrapper.setName(styleName);
}
return styleName;
}
return ""; //$NON-NLS-1$
}
});
stylesViewer.addSelectionChangedListener(new ISelectionChangedListener(){
public void selectionChanged( SelectionChangedEvent event ) {
ISelection selection = event.getSelection();
if (!(selection instanceof IStructuredSelection)) {
return;
}
IStructuredSelection sel = (IStructuredSelection) selection;
if (sel.isEmpty()) {
return;
}
Object selectedItem = sel.getFirstElement();
if (selectedItem == null) {
// unselected, show empty panel
return;
}
if (selectedItem instanceof StyleWrapper) {
currentSelectedStyleWrapper = (StyleWrapper) selectedItem;
}
}
});
return stylesViewer;
}
// /**
// * Add a style to the {@link TableViewer viewer} from a file.
// *
// * @param files the array of files to import.
// * @throws Exception
// */
// public void importToStyle( File... files ) throws Exception {
// List<Style> styles = getStyles();
//
// for( File file : files ) {
// String name = file.getName();
// File newFile = new File(styleFolderFile, name);
// FileUtils.copyFile(file, newFile);
// Style style = Utilities.createStyleFromGraphic(newFile);
// styles.add(style);
// styleToDisk(style);
// }
// stylesViewer.refresh(false, true);
// }
}