/*
* uDig - User Friendly Desktop Internet GIS client
* http://udig.refractions.net
* (C) 2004, Refractions Research Inc.
*
* 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 Refractions BSD
* License v1.0 (http://udig.refractions.net/files/bsd3-v10.html).
*
*/
package org.locationtech.udig.style.sld.internal;
import org.locationtech.udig.style.sld.SLDEditorPart;
import org.locationtech.udig.ui.graphics.SLDs;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Scale;
import org.eclipse.swt.widgets.Text;
import org.geotools.styling.RasterSymbolizer;
import org.geotools.styling.StyleBuilder;
/**
* A quick raster symbolizer that can only vary opacity.
*
* @author aalam
* @since 0.6.0
*/
public class SLDRasterEditorPart extends SLDEditorPart implements SelectionListener {
private Composite myparent;
private Scale opacityScale;
private Text opacityText;
/*
* (non-Javadoc)
*
* @see org.locationtech.udig.style.sld.SLDEditorPart#getContentType()
*/
public Class getContentType() {
return RasterSymbolizer.class;
}
/*
* (non-Javadoc)
*
* @see org.locationtech.udig.style.sld.SLDEditorPart#init()
*/
public void init() {
//Nothing to do...
}
/*
* (non-Javadoc)
*
* @see org.locationtech.udig.style.sld.SLDEditorPart#reset()
*/
public void reset() {
// initialize the ui
setStylingElements((RasterSymbolizer) getContent());
}
private void setStylingElements( RasterSymbolizer symbolizer ) {
double number = SLDs.rasterOpacity(symbolizer);
int opacity = (new Double(number * 100)).intValue();
opacityScale.setSelection(opacity);
opacityText.setText(Integer.toString(opacity) + "%"); //$NON-NLS-1$
opacityText.pack(true);
}
/*
* (non-Javadoc)
*
* @see org.locationtech.udig.style.sld.SLDEditorPart#createPartControl(org.eclipse.swt.widgets.Composite)
*/
protected Control createPartControl( Composite parent ) {
myparent = parent;
RowLayout layout = new RowLayout();
myparent.setLayout(layout);
layout.pack = false;
layout.wrap = true;
layout.type = SWT.HORIZONTAL;
/* Border Opacity */
Group borderOpacityArea = new Group(myparent, SWT.NONE);
borderOpacityArea.setLayout(new GridLayout(2, false));
borderOpacityArea.setText("Raster Opacity"); //$NON-NLS-1$
opacityScale = new Scale(borderOpacityArea, SWT.HORIZONTAL);
opacityScale.setMinimum(0);
opacityScale.setMaximum(100);
opacityScale.setPageIncrement(10);
opacityScale.setBounds(0,0,10,SWT.DEFAULT);
opacityScale.addSelectionListener(new SelectionAdapter(){
public void widgetSelected( SelectionEvent e ) {
opacityText.setText(String.valueOf(opacityScale.getSelection()) + "%"); //$NON-NLS-1$
opacityText.pack(true);
}
});
opacityScale.addSelectionListener(this);
opacityText = new Text(borderOpacityArea, SWT.BORDER | SWT.READ_ONLY);
opacityText.pack(true);
return parent;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.swt.events.SelectionListener#widgetDefaultSelected(org.eclipse.swt.events.SelectionEvent)
*/
public void widgetDefaultSelected( SelectionEvent e ) {
// Meh! Meh I say!
}
/*
* (non-Javadoc)
*
* @see org.eclipse.swt.events.SelectionListener#widgetSelected(org.eclipse.swt.events.SelectionEvent)
*/
public void widgetSelected( SelectionEvent e ) {
apply();
}
/**
* TODO summary sentence for apply ...
*/
public void apply() {
RasterSymbolizer symbolizer = (RasterSymbolizer) getContent();
StyleBuilder styleBuilder = getStyleBuilder();
double opacity = ((double) opacityScale.getSelection()) / 100;
symbolizer.setOpacity(styleBuilder.literalExpression(opacity));
}
}