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Re: [JPP-Devel] A patch for LayerPropertiesPlugIn.java to show layer extent
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From: Michaël M. <mic...@fr...> - 2011-02-14 07:04:20
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/*
* The Unified Mapping Platform (JUMP) is an extensible, interactive GUI
* for visualizing and manipulating spatial features with geometry and attributes.
*
* JUMP is Copyright (C) 2003 Vivid Solutions
*
* This program implements extensions to JUMP and is
* Copyright (C) 2005 Integrated Systems Analysts, Inc.
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* For more information, contact:
*
* Integrated Systems Analysts, Inc.
* 630C Anchors St., Suite 101
* Fort Walton Beach, Florida
* USA
*
* (850)862-7321
*/
package org.openjump.core.ui.plugin.layer;
import com.vividsolutions.jts.util.Assert;
import com.vividsolutions.jump.I18N;
import com.vividsolutions.jump.workbench.WorkbenchContext;
import com.vividsolutions.jump.workbench.model.Layer;
import com.vividsolutions.jump.workbench.plugin.AbstractPlugIn;
import com.vividsolutions.jump.workbench.plugin.EnableCheckFactory;
import com.vividsolutions.jump.workbench.plugin.MultiEnableCheck;
import com.vividsolutions.jump.workbench.plugin.PlugInContext;
import com.vividsolutions.jump.workbench.ui.MultiInputDialog;
import com.vividsolutions.jump.workbench.ui.plugin.FeatureInstaller;
import com.vividsolutions.jump.workbench.ui.renderer.style.ColorThemingStyle;
import com.vividsolutions.jump.feature.FeatureCollectionWrapper;
import com.vividsolutions.jump.feature.Feature;
import com.vividsolutions.jts.geom.Envelope;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jump.io.datasource.*;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.Hashtable;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;
import javax.swing.JSlider;
import javax.swing.SwingConstants;
import javax.swing.event.ChangeListener;
import javax.swing.event.ChangeEvent;
import java.text.*;
import java.util.Map;
public class LayerPropertiesPlugIn extends AbstractPlugIn
{
private final static String LAST_TAB_KEY = LayerPropertiesPlugIn.class.getName() +
" - LAST TAB";
private final static String LAYER_PROPERTIES =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.Layer-Properties");
private final static String INFO =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.Info"); //information
private final static String LAYER_NAME =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.Layer-Name");
private final static String NUMBER_OF_LAYERS =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.Number-of-Layers");
private final static String NUMBER_OF_FEATURES =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.Number-of-Features");
private final static String NUMBER_OF_POINTS =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.Number-of-Points");
private final static String GEOMETRY_TYPE =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.Geometry-Type"); //Polygon, Polyline, etc.
private final static String NUMBER_OF_ATTRIBUTES =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.Number-of-Attributes");
private final static String DATASOURCE_CLASS =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.DataSource-Class"); //class name
private final static String SOURCE_PATH =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.Source-Path"); //directory path of source layer
private final static String NO_FEATURES =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.No-Features"); //no features were found
private final static String MULTIPLE_GEOMETRY_TYPES =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.Multiple-geometry-types"); //mixed
private final static String MULTIPLE_SOURCE_TYPES =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.Multiple-Source-Types");
private final static String NULL_GEOMETRIES =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.Null-Geometries");
private final static String NOT_SAVED =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.Not-Saved"); //the layer is unsaved
private final static String AVERAGE_PER_LAYER =
" (" + I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.average-per-layer") +")";
private final static String MULTIPLE_SOURCES =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.Multiple-Sources");
private final static String STYLES =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.Styles");
private final static String PROPORTIONAL_TRANSPARENCY_ADJUSTER =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.Proportional-Transparency-Adjustment");
private final static String CHARSET =
I18N.get("org.openjump.core.ui.io.file.DataSourceFileLayerLoader.charset");
private final static String EXTENT =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.extent");
private final static String XMIN =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.xmin");
private final static String YMIN =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.ymin");
private final static String XMAX =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.xmax");
private final static String YMAX =
I18N.get("org.openjump.core.ui.plugin.layer.LayerPropertiesPlugIn.ymax");
private WorkbenchContext workbenchContext;
private InfoPanel infoPanel;
private StylePanel stylePanel;
private Layer[] layers;
private Envelope extent;
private int[] currTransArray;
private boolean styleChanged = false;
public interface PropertyPanel {
public String getTitle();
public void updateStyles();
/**
* @return an error message, or null if the input is valid
*/
public String validateInput();
}
public LayerPropertiesPlugIn()
{
}
public void initialize(PlugInContext context) throws Exception
{
this.workbenchContext = context.getWorkbenchContext();
FeatureInstaller featureInstaller = new FeatureInstaller(workbenchContext);
JPopupMenu layerNamePopupMenu = workbenchContext.getWorkbench()
.getFrame()
.getLayerNamePopupMenu();
featureInstaller.addPopupMenuItem(layerNamePopupMenu,
this, LAYER_PROPERTIES + "..." + "{pos:4}",
false, null,
createEnableCheck(workbenchContext));
}
public boolean execute(PlugInContext context) throws Exception
{
styleChanged = false;
layers = context.getSelectedLayers();
extent = context.getSelectedLayerEnvelope();
currTransArray = new int[layers.length];
for (int i = 0; i < layers.length; i++)
currTransArray[i] = 255 - getAlpha(layers[i]);
ArrayList oldStyleList = new ArrayList(layers.length); //save to restore if cancel
for (int i = 0; i < layers.length; i++) {
Object layerable = layers[i];
if (layerable instanceof Layer) {
oldStyleList.add( ((Layer) layerable).cloneStyles()); // copy
}
}
infoPanel = new InfoPanel();
stylePanel = new StylePanel();
MultiInputDialog dialog = new MultiInputDialog(context.getWorkbenchFrame(),
LAYER_PROPERTIES, true);
//dialog.setInset(0);
final ArrayList propertyPanels = new ArrayList();
propertyPanels.add(infoPanel);
propertyPanels.add(stylePanel);
//infoPanel.setPreferredSize(new Dimension(350, 200));
//stylePanel.setPreferredSize(new Dimension(350, 200));
JTabbedPane tabbedPane = new JTabbedPane();
for (Iterator i = propertyPanels.iterator(); i.hasNext();)
{
final PropertyPanel propertyPanel = (PropertyPanel) i.next();
tabbedPane.add((Component) propertyPanel, propertyPanel.getTitle());
}
dialog.addRow(tabbedPane);
tabbedPane.setSelectedComponent(find(propertyPanels,
(String) context.getWorkbenchContext().getWorkbench()
.getBlackboard().get(LAST_TAB_KEY,
((PropertyPanel) propertyPanels.iterator().next()).getTitle())));
dialog.setVisible(true);
context.getWorkbenchContext().getWorkbench().getBlackboard().put(LAST_TAB_KEY,
((PropertyPanel) tabbedPane.getSelectedComponent()).getTitle());
if ((! dialog.wasOKPressed()) && styleChanged) {
if (oldStyleList != null) { // restore the original styles
int j = 0;
for (int i = 0; i < layers.length; i++) {
Object layerable = layers[i];
if (layerable instanceof Layer) {
Layer layer = (Layer) layerable;
layer.setStyles( (Collection) oldStyleList.get(j++));
}
}
}
}
if ( !styleChanged /*existing variable of this class*/){
reportNothingToUndoYet(context);
}
return true;
}
private Component find(Collection propertyPanels, String title) {
for (Iterator i = propertyPanels.iterator(); i.hasNext();) {
PropertyPanel propertyPanel = (PropertyPanel) i.next();
if (propertyPanel.getTitle().equals(title)) {
return (Component) propertyPanel;
}
}
Assert.shouldNeverReachHere();
return null;
}
public static MultiEnableCheck createEnableCheck(WorkbenchContext workbenchContext)
{
EnableCheckFactory checkFactory = new EnableCheckFactory(workbenchContext);
return new MultiEnableCheck()
.add(checkFactory.createWindowWithSelectionManagerMustBeActiveCheck())
.add(checkFactory.createAtLeastNLayersMustBeSelectedCheck(1));
}
public static ColorThemingStyle getColorThemingStyleIfEnabled(Layer layer){
ColorThemingStyle someStyle = null;
final Collection currentStyles = layer.getStyles();
for (Iterator j = currentStyles.iterator(); j.hasNext();) {
Object style = j.next();
if (style instanceof ColorThemingStyle) {
if (((ColorThemingStyle) style).isEnabled())
someStyle = (ColorThemingStyle) style;
}
}
return someStyle;
}
public static int getAlpha(Layer layer) {
ColorThemingStyle cts = getColorThemingStyleIfEnabled(layer);
int alpha = 0;
if (cts == null)
alpha = layer.getBasicStyle().getAlpha();
else
alpha = cts.getDefaultStyle().getAlpha();
return alpha;
}
public static void setAlpha(Layer layer, int alpha) {
layer.getBasicStyle().setAlpha(alpha);
ColorThemingStyle cts = getColorThemingStyleIfEnabled(layer);
if (cts != null) cts.setAlpha(alpha);
}
private class InfoPanel extends JPanel implements PropertyPanel
{
//private BorderLayout borderLayout = new BorderLayout();
private JLabel label_Name_L = new JLabel();
private JLabel label_NumItems_L = new JLabel();
private JLabel label_NumPts_L = new JLabel();
private JLabel label_GeoType_L = new JLabel();
private JLabel label_NumAtts_L = new JLabel();
private JLabel label_DSClass_L = new JLabel();
private JLabel label_Charset_L = new JLabel();
private JLabel label_Path_L = new JLabel();
private JLabel label_Extent_L = new JLabel();
private JTextArea label_Name_R = new JTextArea();
private JLabel label_NumItems_R = new JLabel();
private JLabel label_NumPts_R = new JLabel();
private JLabel label_GeoType_R = new JLabel();
private JLabel label_NumAtts_R = new JLabel();
private JLabel label_DSClass_R = new JLabel();
private JLabel label_Charset_R = new JLabel();
private JTextArea label_Path_R = new JTextArea();
private JTextArea label_Extent_R = new JTextArea();
private InfoPanel()
{
super(new GridBagLayout());
label_Name_R.setFont(this.getFont());
label_Name_R.setLineWrap(true);
label_Name_R.setBackground(this.getBackground());
label_Name_R.setSize(200,30);
label_Path_R.setFont(this.getFont());
label_Path_R.setLineWrap(true);
label_Path_R.setBackground(this.getBackground());
label_Path_R.setSize(200,50);
label_Extent_R.setFont(this.getFont());
label_Extent_R.setLineWrap(true);
label_Extent_R.setBackground(this.getBackground());
label_Extent_R.setSize(200,50);
if (layers.length == 1) {
label_Name_L.setText(LAYER_NAME + ": ");
label_Extent_L.setText(EXTENT + ": ");
}
else
label_Name_L.setText(NUMBER_OF_LAYERS + ": ");
label_NumItems_L.setText(NUMBER_OF_FEATURES + ": ");
label_NumPts_L.setText(NUMBER_OF_POINTS + ": ");
label_GeoType_L.setText(GEOMETRY_TYPE + ": ");
label_NumAtts_L.setText(NUMBER_OF_ATTRIBUTES + ": ");
label_DSClass_L.setText(DATASOURCE_CLASS + ": ");
label_Charset_L.setText(CHARSET + ": ");
label_Path_L.setText(SOURCE_PATH + ": ");
setInfo(layers);
//column one labels
int row = 0;
add(label_Name_L, new GridBagConstraints(0, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.NORTHEAST, GridBagConstraints.NONE,
new Insets(0, 0, 0, 5), 0, 0));
add(label_NumItems_L, new GridBagConstraints(0, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.EAST, GridBagConstraints.NONE,
new Insets(0, 0, 0, 5), 0, 0));
add(label_NumPts_L, new GridBagConstraints(0, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.EAST, GridBagConstraints.NONE,
new Insets(0, 0, 0, 5), 0, 0));
add(label_GeoType_L, new GridBagConstraints(0, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.EAST, GridBagConstraints.NONE,
new Insets(0, 0, 0, 5), 0, 0));
add(label_NumAtts_L, new GridBagConstraints(0, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.EAST, GridBagConstraints.NONE,
new Insets(0, 0, 0, 5), 0, 0));
add(label_DSClass_L, new GridBagConstraints(0, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.EAST, GridBagConstraints.NONE,
new Insets(0, 0, 0, 5), 0, 0));
// [Matthias Scholz 5.Sept.2010] Charset is only viewed if we have a Shapefile
if (layers.length == 1 &&
layers[0].getDataSourceQuery() != null &&
layers[0].getDataSourceQuery().getDataSource().getClass().getName().equals("com.vividsolutions.jump.io.datasource.StandardReaderWriterFileDataSource$Shapefile")) {
add(label_Charset_L, new GridBagConstraints(0, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.EAST, GridBagConstraints.NONE,
new Insets(0, 0, 0, 5), 0, 0));
}
add(label_Path_L, new GridBagConstraints(0, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.NORTHEAST, GridBagConstraints.NONE,
new Insets(10, 0, 0, 5), 0, 0));
if (layers.length == 1){
add(label_Extent_L, new GridBagConstraints(0, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.EAST, GridBagConstraints.NONE,
new Insets(0, 0, 0, 5), 0, 0));
}
//column two info
row = 0;
add(label_Name_R, new GridBagConstraints(1, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.NORTHWEST, GridBagConstraints.NONE,
new Insets(0, 0, 0, 0), 0, 0));
add(label_NumItems_R, new GridBagConstraints(1, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.NONE,
new Insets(0, 0, 0, 0), 0, 0));
add(label_NumPts_R, new GridBagConstraints(1, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.NONE,
new Insets(0, 0, 0, 0), 0, 0));
add(label_GeoType_R, new GridBagConstraints(1, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.NONE,
new Insets(0, 0, 0, 0), 0, 0));
add(label_NumAtts_R, new GridBagConstraints(1, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.NONE,
new Insets(0, 0, 0, 0), 0, 0));
add(label_DSClass_R, new GridBagConstraints(1, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.NONE,
new Insets(0, 0, 0, 0), 0, 0));
// [Matthias Scholz 5.Sept.2010] Charset is only viewed if we have a Shapefile
if (layers.length == 1 &&
layers[0].getDataSourceQuery() != null &&
layers[0].getDataSourceQuery().getDataSource().getClass().getName().equals("com.vividsolutions.jump.io.datasource.StandardReaderWriterFileDataSource$Shapefile")) {
add(label_Charset_R, new GridBagConstraints(1, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.WEST, GridBagConstraints.NONE,
new Insets(0, 0, 0, 0), 0, 0));
}
add(label_Path_R, new GridBagConstraints(1, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.NORTHWEST, GridBagConstraints.NONE,
new Insets(10, 0, 0, 0), 0, 0));
if (layers.length == 1){
add(label_Extent_R, new GridBagConstraints(1, row++, 1, 1, 0.0, 0.0,
GridBagConstraints.NORTHWEST, GridBagConstraints.NONE,
new Insets(10, 0, 0, 0), 0, 0));
}
}
public String getTitle()
{
return INFO;
}
public void updateStyles()
{
}
public String validateInput()
{
return null;
}
private void setInfo(Layer[] layers)
{
if (layers.length == 1)
label_Name_R.setText(layers[0].getName());
else
label_Name_R.setText("" + layers.length);
String sourcePath = NOT_SAVED;
String geoClass = "";
String sourceClass = "";
int numFeatures = 0;
int numPts = 0;
int numAtts = 0;
Geometry geo = null;
boolean multipleGeoTypes = false;
boolean multipleSourceTypes = false;
for (int l = 0; l < layers.length; l++)
{
FeatureCollectionWrapper fcw = layers[l].getFeatureCollectionWrapper();
numFeatures += fcw.size();
numAtts += fcw.getFeatureSchema().getAttributeCount() - 1;
for (Iterator i = fcw.getFeatures().iterator(); i.hasNext();)
{
geo = ((Feature)i.next()).getGeometry();
if (geo != null)
{
numPts += geo.getNumPoints();
if (geoClass.equals(""))
geoClass = geo.getClass().getName();
else if (! geo.getClass().getName().equals(geoClass))
multipleGeoTypes = true;
}
}
DataSourceQuery dsq = layers[l].getDataSourceQuery();
if (dsq != null)
{
String dsqSourceClass = dsq.getDataSource().getClass().getName();
if (sourceClass.equals(""))
sourceClass = dsqSourceClass;
else if (! sourceClass.equals(dsqSourceClass))
multipleSourceTypes = true;
Object fnameObj = dsq.getDataSource().getProperties().get("File");
if (fnameObj != null)
sourcePath = fnameObj.toString();
}
} //end of looping through all the layers
//determine the geoClass
if (numFeatures == 0)
geoClass = NO_FEATURES;
else if (multipleGeoTypes)
geoClass = MULTIPLE_GEOMETRY_TYPES;
else if (geoClass.equals(""))
geoClass = NULL_GEOMETRIES;
else
{
int dotPos = geoClass.lastIndexOf(".");
if (dotPos > 0)
geoClass = geoClass.substring(dotPos + 1);
}
//determine the sourceClass
if (sourceClass.equals(""))
sourceClass = NOT_SAVED;
else if (multipleSourceTypes)
sourceClass = MULTIPLE_SOURCE_TYPES;
else
{
int dotPos = sourceClass.lastIndexOf(".");
if (dotPos > 0)
sourceClass = sourceClass.substring(dotPos + 1);
dotPos = sourceClass.lastIndexOf("$");
if (dotPos > 0)
sourceClass = sourceClass.substring(dotPos + 1);
}
label_GeoType_R.setText(geoClass);
if (layers.length == 1)
{
label_NumItems_R.setText("" + numFeatures);
label_NumPts_R.setText("" + numPts);
label_NumAtts_R.setText("" + numAtts);
}
else
{
DecimalFormat df = new DecimalFormat("0.0");
double numLayers = layers.length;
double avgNumFeatures = numFeatures / numLayers;
double avgNumPts = numPts / numLayers;
double avgNumAtts = numAtts / numLayers;
label_NumItems_R.setText(numFeatures + " " + df.format(avgNumFeatures) + AVERAGE_PER_LAYER);
label_NumPts_R.setText(numPts + " " + df.format(avgNumPts) + AVERAGE_PER_LAYER);
label_NumAtts_R.setText(df.format(avgNumAtts) + AVERAGE_PER_LAYER);
}
label_DSClass_R.setText(sourceClass);
// fetch the charset from the layer properties
String charsetName = null;
DataSourceQuery dsq = layers[0].getDataSourceQuery();
if (dsq != null) {
Map properties = dsq.getDataSource().getProperties();
charsetName = (String) properties.get("charset");
// if the layer do not have the charset property, set with default charset
if (charsetName == null) {
charsetName = Charset.defaultCharset().displayName();
properties.put("charset", charsetName);
}
}
else {
// if the layer does not come from a datasource
charsetName = Charset.defaultCharset().displayName();
}
// and finaly set the text of the label
label_Charset_R.setText(charsetName);
label_Path_R.setText(sourcePath);
if ((layers.length > 1) && (! sourcePath.equalsIgnoreCase(NOT_SAVED)))
label_Path_R.setText(MULTIPLE_SOURCES);
if ((layers.length == 1)) {
String ext = " " + XMIN + ":" + extent.getMinX() +
"\n " + YMIN + ":" + extent.getMinY() +
"\n " + XMAX + ":" + extent.getMaxX() +
"\n " + YMAX + ":" + extent.getMaxY();
label_Extent_R.setText(ext);
}
}
}
private class StylePanel extends JPanel implements PropertyPanel
{
private JSlider transparencySlider = new JSlider();
private StylePanel()
{
Box box = new Box(BoxLayout.Y_AXIS);
JLabel transparencySliderLabel =
new JLabel(PROPORTIONAL_TRANSPARENCY_ADJUSTER, SwingConstants.CENTER);
transparencySliderLabel.setAlignmentX(CENTER_ALIGNMENT);
box.add(transparencySliderLabel);
Hashtable labelTable = new Hashtable();
labelTable.put(new Integer(0), new JLabel("100"));
labelTable.put(new Integer(10), new JLabel("80"));
labelTable.put(new Integer(20), new JLabel("60"));
labelTable.put(new Integer(30), new JLabel("40"));
labelTable.put(new Integer(40), new JLabel("20"));
labelTable.put(new Integer(50), new JLabel("0"));
labelTable.put(new Integer(60), new JLabel("20"));
labelTable.put(new Integer(70), new JLabel("40"));
labelTable.put(new Integer(80), new JLabel("60"));
labelTable.put(new Integer(90), new JLabel("80"));
labelTable.put(new Integer(100), new JLabel("100"));
transparencySlider.setPreferredSize(new Dimension(250, 50));
transparencySlider.setPaintLabels(true);
transparencySlider.setPaintTicks(true);
transparencySlider.setLabelTable(labelTable);
transparencySlider.setMajorTickSpacing(10);
transparencySlider.setMinimum(0);
transparencySlider.setMaximum(100);
transparencySlider.setValue(50);
box.add(transparencySlider);
add(box);
transparencySlider.addChangeListener(new ChangeListener()
{
public void stateChanged(ChangeEvent e)
{
JSlider source = (JSlider)e.getSource();
if (!source.getValueIsAdjusting())
{
int sliderVal = (int)source.getValue();
double percentChg;
for (int i = 0; i < layers.length; i++)
{
Layer layer = layers[i];
int currTrans = currTransArray[i];
double newTrans = currTrans;
if (sliderVal < 50)
{
percentChg = ((50 - sliderVal) / 50d);
newTrans = currTrans - (currTrans * percentChg);
}
else if (sliderVal > 50)
{
percentChg = (sliderVal - 50) / 50d;
newTrans = currTrans + ((255 - currTrans) * percentChg);
}
setAlpha(layer, 255 - (int)newTrans);
layer.fireAppearanceChanged();
styleChanged = true;
}
}
}
});
}
public String getTitle()
{
return STYLES;
}
public void updateStyles()
{
}
public String validateInput()
{
return null;
}
}
}
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