/*
* @(#)StrokeandFill.java 1.2 98/07/31
*/
import java.lang.Integer;
import java.awt.*;
import java.awt.event.*;
import java.awt.font.*;
import java.awt.geom.*;
import java.awt.image.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.ItemListener;
import java.awt.event.ItemEvent;
import javax.swing.*;
/*
* This applet renders a Shape, selected by the user, using the Stroke and Paint attributes and rendering method
* also selected by the user.
*/
public class StrokeAndFill extends JApplet implements ItemListener {
JLabel primLabel, lineLabel, paintLabel, strokeLabel;
ShapePanel display;
static JComboBox primitive, line, paint, stroke;
int index = 0;
public static boolean no2D = false;
public void init() {
GridBagLayout layOut = new GridBagLayout();
getContentPane().setLayout(layOut);
GridBagConstraints c = new GridBagConstraints();
c.weightx = 1.0;
c.fill = GridBagConstraints.BOTH;
primLabel = new JLabel();
primLabel.setText("Primitive");
Font newFont = getFont().deriveFont(1);
primLabel.setFont(newFont);
primLabel.setHorizontalAlignment(JLabel.CENTER);
layOut.setConstraints(primLabel, c);
getContentPane().add(primLabel);
lineLabel = new JLabel();
lineLabel.setText("Lines");
lineLabel.setFont(newFont);
lineLabel.setHorizontalAlignment(JLabel.CENTER);
layOut.setConstraints(lineLabel, c);
getContentPane().add(lineLabel);
c.gridwidth = GridBagConstraints.RELATIVE;
paintLabel = new JLabel();
paintLabel.setText("Paints");
paintLabel.setFont(newFont);
paintLabel.setHorizontalAlignment(JLabel.CENTER);
layOut.setConstraints(paintLabel, c);
getContentPane().add(paintLabel);
c.gridwidth = GridBagConstraints.REMAINDER;
strokeLabel = new JLabel();
strokeLabel.setText("Rendering");
strokeLabel.setFont(newFont);
strokeLabel.setHorizontalAlignment(JLabel.CENTER);
layOut.setConstraints(strokeLabel, c);
getContentPane().add(strokeLabel);
GridBagConstraints ls = new GridBagConstraints();
ls.weightx = 1.0;
ls.fill = GridBagConstraints.BOTH;
primitive = new JComboBox( new Object []{
"rectangle",
"ellipse",
"text"});
primitive.addItemListener(this);
newFont = newFont.deriveFont(0, 14.0f);
primitive.setFont(newFont);
layOut.setConstraints(primitive, ls);
getContentPane().add(primitive);
line = new JComboBox( new Object []{
"thin",
"thick",
"dashed"});
line.addItemListener(this);
line.setFont(newFont);
layOut.setConstraints(line, ls);
getContentPane().add(line);
ls.gridwidth = GridBagConstraints.RELATIVE;
paint = new JComboBox( new Object[]{
"solid",
"gradient",
"polka"});
paint.addItemListener(this);
paint.setFont(newFont);
layOut.setConstraints(paint, ls);
getContentPane().add(paint);
ls.gridwidth = GridBagConstraints.REMAINDER;
stroke = new JComboBox( new Object[]{
"Stroke",
"Fill",
"Stroke & Fill"});
stroke.addItemListener(this);
stroke.setFont(newFont);
layOut.setConstraints(stroke, ls);
getContentPane().add(stroke);
GridBagConstraints sC = new GridBagConstraints();
sC.fill = GridBagConstraints.BOTH;
sC.weightx = 1.0;
sC.weighty = 1.0;
sC.gridwidth = GridBagConstraints.REMAINDER;
display = new ShapePanel();
layOut.setConstraints(display, sC);
display.setBackground(Color.white);
getContentPane().add(display);
validate();
}
public void itemStateChanged(ItemEvent e){
display.renderShape();
}
public static void main( String[] argv ) {
if ( argv.length > 0 && argv[0].equals( "-no2d" ) ) {
StrokeAndFill.no2D = true;
}
JFrame frame = new JFrame( "StrokeAndFill" );
frame.addWindowListener( new WindowAdapter(){
public void windowClosing( WindowEvent e ){
System.exit( 0 );
}
});
JApplet applet = new StrokeAndFill();
frame.getContentPane().add( BorderLayout.CENTER, applet );
applet.init();
frame.setSize( 450, 250 );
frame.show();
}
}
class ShapePanel extends JPanel {
BasicStroke bstroke = new BasicStroke(3.0f);
int w, h;
Shape shapes[] = new Shape[3];
public ShapePanel(){
setBackground(Color.white);
shapes[0] = new Rectangle(0, 0, 100, 100);
shapes[1] = new Ellipse2D.Double(0.0, 0.0, 100.0, 100.0);
TextLayout textTl = new TextLayout("Text", new Font("Helvetica", 1, 96), new FontRenderContext(null, false, false));
AffineTransform textAt = new AffineTransform();
textAt.translate(0, (float)textTl.getBounds().getHeight());
shapes[2] = textTl.getOutline(textAt);
}
// Invokes the paint method.
public void renderShape() {
repaint();
}
public void paintComponent (Graphics g) {
super.paintComponent(g);
if ( !StrokeAndFill.no2D ) {
Graphics2D g2 = (Graphics2D) g;
Dimension d = getSize();
w = d.width;
h = d.height;
int width, height;
// Prints the initial instructions.
String instruct = "Pick a primitive, line style, paint, and rendering method.";
TextLayout thisTl = new TextLayout(instruct, new Font("Helvetica", 0, 10), g2.getFontRenderContext());
Rectangle2D bounds = thisTl.getBounds();
width = (int)bounds.getWidth();
thisTl.draw(g2, w/2-width/2, 20);
Stroke oldStroke = g2.getStroke();
// Sets the Stroke.
switch ( StrokeAndFill.line.getSelectedIndex() ) {
case 0 : g2.setStroke(new BasicStroke(3.0f)); break;
case 1 : g2.setStroke(new BasicStroke(8.0f)); break;
case 2 : float dash[] = {10.0f};
g2.setStroke(new BasicStroke(3.0f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 10.0f, dash, 0.0f));
break;
}
Paint oldPaint = g2.getPaint();
// Sets the Paint.
switch ( StrokeAndFill.paint.getSelectedIndex() ) {
case 0 : g2.setPaint(Color.blue); break;
case 1 : g2.setPaint(new GradientPaint(0, 0, Color.lightGray, w-250, h, Color.blue, false));
break;
case 2 : BufferedImage bi = new BufferedImage(5, 5, BufferedImage.TYPE_INT_RGB);
Graphics2D big = bi.createGraphics();
big.setColor(Color.blue);
big.fillRect(0, 0, 5, 5);
big.setColor(Color.lightGray);
big.fillOval(0, 0, 5, 5);
Rectangle r = new Rectangle(0,0,5,5);
g2.setPaint(new TexturePaint(bi, r));
break;
}
// Sets the Shape.
Shape shape = shapes[StrokeAndFill.primitive.getSelectedIndex()];
Rectangle r = shape.getBounds();
// Sets the selected Shape to the center of the Canvas.
AffineTransform saveXform = g2.getTransform();
AffineTransform toCenterAt = new AffineTransform();
toCenterAt.translate(w/2-(r.width/2), h/2-(r.height/2));
g2.transform(toCenterAt);
// Determines whether to fill, stroke, or fill and stroke.
switch ( StrokeAndFill.stroke.getSelectedIndex() ) {
case 0 : g2.draw(shape); break;
case 1 : g2.fill(shape); break;
case 2 : Graphics2D tempg2 = g2;
g2.fill(shape);
g2.setColor(Color.darkGray);
g2.draw(shape);
g2.setPaint(tempg2.getPaint()); break;
}
g2.setTransform(saveXform);
g2.setStroke(oldStroke);
g2.setPaint(oldPaint);
} else {
g.drawRect(0, 0, 100, 100);
}
}}
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