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Core library of the Free Evolutionary Algorithm Toolkit
/*
* @(#)PortRenderer.java 1.0 28/11/01
*
* Copyright (c) 2001-2004, Gaudenz Alder
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of JGraph nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
package org.jgraph.graph;
import org.jgraph.JGraph;
import javax.swing.*;
import java.awt.*;
import java.io.Serializable;
/**
* This renderer displays entries that implement the CellView interface
* and supports the following attributes:
* GraphConstants.OFFSET
* GraphConstants.ABSOLUTE
* @version 1.0 28/11/01
* @author Gaudenz Alder
*/
public class PortRenderer
extends JComponent
implements CellViewRenderer, Serializable {
/** Cache the current graph for drawing */
protected transient JGraph graph;
/** Cache the current edgeview for drawing. */
protected transient PortView view;
/** Cached hasFocus and selected value. */
transient protected boolean hasFocus, selected, preview;
/**
* Constructs a renderer that may be used to render ports.
*/
public PortRenderer() {
setForeground(UIManager.getColor("MenuItem.selectionBackground"));
setBackground(UIManager.getColor("Tree.selectionBorderColor"));
}
/**
* Configure and return the renderer based on the passed in
* components. The value is typically set from messaging the
* graph with convertValueToString.
*
* @param graph the graph that that defines the rendering context.
* @param view the object that should be rendered.
* @param sel whether the object is selected.
* @param focus whether the object has the focus.
* @param preview whether we are drawing a preview.
* @return the component used to render the value.
*/
public Component getRendererComponent(
JGraph graph,
CellView view,
boolean sel,
boolean focus,
boolean preview) {
// Check type
if (view instanceof PortView && graph != null) {
this.graph = graph;
this.view = (PortView) view;
this.hasFocus = focus;
this.selected = sel;
this.preview = preview;
return this;
}
return null;
}
/**
* Paint the renderer. Overrides superclass paint
* to add specific painting. Note: The preview flag
* is interpreted as "highlight" in this context. (This
* is used to highlight the port if the mouse is over it.)
*/
public void paint(Graphics g) {
Dimension d = getSize();
g.setColor(graph.getBackground());
g.setXORMode(graph.getBackground());
if (preview) {
g.setColor(getBackground());
g.drawRect(1, 1, d.width - 3, d.height - 3);
g.drawRect(2, 2, d.width - 5, d.height - 5);
}
boolean offset =
(GraphConstants.getOffset(view.getAllAttributes()) != null);
g.setColor(getForeground());
if (offset) {
g.drawLine(2, 2, d.width - 2, d.height - 2);
g.drawLine(2, d.width - 2, d.height - 2, 2);
} else if (!preview)
g.drawRect(3, 3, d.width - 4, d.height - 4);
}
/**
* Overridden for performance reasons.
* See the Implementation Note
* for more information.
*/
public void validate() {
}
/**
* Overridden for performance reasons.
* See the Implementation Note
* for more information.
*/
public void revalidate() {
}
/**
* Overridden for performance reasons.
* See the Implementation Note
* for more information.
*/
public void repaint(long tm, int x, int y, int width, int height) {
}
/**
* Overridden for performance reasons.
* See the Implementation Note
* for more information.
*/
public void repaint(Rectangle r) {
}
/**
* Overridden for performance reasons.
* See the Implementation Note
* for more information.
*/
protected void firePropertyChange(
String propertyName,
Object oldValue,
Object newValue) {
// Strings get interned...
if (propertyName == "text")
super.firePropertyChange(propertyName, oldValue, newValue);
}
/**
* Overridden for performance reasons.
* See the Implementation Note
* for more information.
*/
public void firePropertyChange(
String propertyName,
byte oldValue,
byte newValue) {
}
/**
* Overridden for performance reasons.
* See the Implementation Note
* for more information.
*/
public void firePropertyChange(
String propertyName,
char oldValue,
char newValue) {
}
/**
* Overridden for performance reasons.
* See the Implementation Note
* for more information.
*/
public void firePropertyChange(
String propertyName,
short oldValue,
short newValue) {
}
/**
* Overridden for performance reasons.
* See the Implementation Note
* for more information.
*/
public void firePropertyChange(
String propertyName,
int oldValue,
int newValue) {
}
/**
* Overridden for performance reasons.
* See the Implementation Note
* for more information.
*/
public void firePropertyChange(
String propertyName,
long oldValue,
long newValue) {
}
/**
* Overridden for performance reasons.
* See the Implementation Note
* for more information.
*/
public void firePropertyChange(
String propertyName,
float oldValue,
float newValue) {
}
/**
* Overridden for performance reasons.
* See the Implementation Note
* for more information.
*/
public void firePropertyChange(
String propertyName,
double oldValue,
double newValue) {
}
/**
* Overridden for performance reasons.
* See the Implementation Note
* for more information.
*/
public void firePropertyChange(
String propertyName,
boolean oldValue,
boolean newValue) {
}
}
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