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Core library of the Free Evolutionary Algorithm Toolkit
/*
* @(#)GPGraphUI.java 1.2 11/11/02
*
* Copyright (C) 2001 Gaudenz Alder
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
package org.jgraph.pad;
import org.jgraph.JGraph;
import org.jgraph.graph.*;
import org.jgraph.plaf.basic.BasicGraphUI;
import javax.swing.*;
import java.awt.*;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.geom.AffineTransform;
import java.io.File;
import java.io.Reader;
import java.net.URL;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.Map;
public class GPGraphUI extends BasicGraphUI {
public GPGraph getGPGraph() {
return (GPGraph) graph;
}
//
// Override Parent Methods
//
// @jdk14
protected TransferHandler createTransferHandler() {
return new GPTransferHandler();
}
/**
* Paint the background of this graph. Calls paintGrid.
*/
protected void paintBackground(Graphics g) {
Rectangle pageBounds = graph.getBounds();
if (getGPGraph().getBackgroundImage() != null) {
// Use clip and pageBounds
double s = graph.getScale();
Graphics2D g2 = (Graphics2D) g;
AffineTransform tmp = g2.getTransform();
g2.scale(s, s);
g.drawImage(getGPGraph().getBackgroundImage(), 0, 0, graph);
g2.setTransform(tmp);
} else if (getGPGraph().isPageVisible()) { // FIX: Use clip
int w = (int) (getGPGraph().getPageFormat().getWidth());
int h = (int) (getGPGraph().getPageFormat().getHeight());
Point p = graph.toScreen(new Point(w, h));
w = p.x;
h = p.y;
g.setColor(graph.getHandleColor());
g.fillRect(0, 0, graph.getWidth(), graph.getHeight());
g.setColor(Color.darkGray);
g.fillRect(3, 3, w, h);
g.setColor(graph.getBackground());
g.fillRect(1, 1, w - 1, h - 1);
pageBounds = new Rectangle(0, 0, w, h);
}
if (graph.isGridVisible())
paintGrid(graph.getGridSize(), g, pageBounds);
}
/**
* TransferHandler that can import text.
*/
public class GPTransferHandler extends GraphTransferHandler {
protected GraphTransferable create(
JGraph graph,
Object[] cells,
Map viewAttributes,
Rectangle bounds,
ConnectionSet cs,
ParentMap pm) {
String gxl = GPConverter.toGXL(getGPGraph(), cells);
return new GPTransferable(gxl, cells, viewAttributes, bounds, cs, pm);
}
public boolean importDataImpl(JComponent comp, Transferable t) {
if (super.importDataImpl(comp, t)) {
return true;
} else if (graph.isDropEnabled() && comp instanceof JGraph) {
try {
JGraph graph = (JGraph) comp;
// Drop Files from OS
if (t
.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
Point p = null;
if (getInsertionLocation() != null)
p =
graph.fromScreen(
graph.snap(
new Point(getInsertionLocation())));
int gs = graph.getGridSize();
if (p == null)
p = new Point(gs, gs);
Map attributes = new Hashtable();
java.util.List cells = new LinkedList();
java.util.List fileList =
(java.util.List) t.getTransferData(
DataFlavor.javaFileListFlavor);
Iterator iterator = fileList.iterator();
while (iterator.hasNext()) {
File file = (File) iterator.next();
Hashtable hashtable = new Hashtable();
hashtable.put("name", file.getName());
//hashtable.put(
// "url",
// "file://" + file.getAbsolutePath());
hashtable.put(GPUserObject.keyURI, file.toURL().toString());
hashtable.put("path", file.getAbsolutePath());
// Try icon // 1.3, 1.4 use imageIO
URL url = file.toURL();
ImageIcon icon = null;
String name = file.getName();
if (url.toString().toLowerCase().endsWith(".gif")
|| url.toString().toLowerCase().endsWith(".jpg")
|| url.toString().toLowerCase().endsWith(".jpeg")
|| url.toString().toLowerCase().endsWith(".png")) {
icon = new ImageIconBean(url);
name = "";
}
Object userObject = new GPUserObject(name, hashtable);
DefaultGraphCell cell = new DefaultGraphCell(userObject);
cell.add(new DefaultPort());
Dimension d;
if (icon == null) {
CellView view =
graphLayoutCache.getMapping(cell, true);
d = graph.snap(getPreferredSize(graph, view));
if (d == null)
d = new Dimension(2 * gs, 2 * gs);
else
d.width = d.width + 10;
graph.snap(d);
d.width += 1;
d.height += 1;
} else
d =
new Dimension(
icon.getIconWidth(),
icon.getIconHeight());
Map map = GraphConstants.createMap();
GraphConstants.setBounds(map, new Rectangle(p, d));
if (icon != null)
GraphConstants.setIcon(map, icon);
else
GraphConstants.setBorderColor(map, Color.black);
attributes.put(cell, map);
cells.add(cell);
p.translate(0, d.height + (int) (1.5 * gs));
graph.snap(p);
}
if (!cells.isEmpty()) {
graph.getGraphLayoutCache().insert(
cells.toArray(),
attributes,
null,
null,
null);
graph.requestFocus();
return true;
}
// Try to drop as text
} else {
Object cell = null;
Map map = GraphConstants.createMap();
DataFlavor bestFlavor =
DataFlavor.selectBestTextFlavor(
t.getTransferDataFlavors());
if (bestFlavor != null && cell == null) {
Reader reader = bestFlavor.getReaderForText(t);
StringBuffer s = new StringBuffer();
char[] c = new char[1];
while (reader.read(c) != -1)
s.append(c);
Point p =
graph.fromScreen(
graph.snap(
new Point(getInsertionLocation())));
int gs = graph.getGridSize();
if (p == null)
p = new Point(gs, gs);
cell = new TextCell(new String(s));
((DefaultGraphCell) cell).add(new DefaultPort());
CellView view =
graphLayoutCache.getMapping(cell, true);
Dimension d =
graph.snap(getPreferredSize(graph, view));
if (d == null)
d = new Dimension(2 * gs, 2 * gs);
GraphConstants.setBounds(map, new Rectangle(p, d));
}
if (cell != null) {
Map viewMap = new Hashtable();
viewMap.put(cell, map);
graph.getModel().insert(
new Object[] { cell },
viewMap,
null,
null,
null);
}
}
} catch (Exception exception) {
//System.out.println(
// "Cannot import data: " + exception.getMessage());
}
}
return false;
}
}
}
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