/*
* 1.2 version.
*/
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.*;
/*
* This is like the FontDemo applet in volume 1, except that it
* uses the Java 2D APIs to define and render the graphics and text.
*/
public class ShapesDemo2D extends JApplet {
final static int maxCharHeight = 15;
final static int minFontSize = 6;
final static Color bg = Color.white;
final static Color fg = Color.black;
final static Color red = Color.red;
final static Color white = Color.white;
final static BasicStroke stroke = new BasicStroke(2.0f);
final static BasicStroke wideStroke = new BasicStroke(8.0f);
final static float dash1[] = {10.0f};
final static BasicStroke dashed = new BasicStroke(1.0f,
BasicStroke.CAP_BUTT,
BasicStroke.JOIN_MITER,
10.0f, dash1, 0.0f);
Dimension totalSize;
FontMetrics fontMetrics;
public void init() {
//Initialize drawing colors
setBackground(bg);
setForeground(fg);
}
FontMetrics pickFont(Graphics2D g2,
String longString,
int xSpace) {
boolean fontFits = false;
Font font = g2.getFont();
FontMetrics fontMetrics = g2.getFontMetrics();
int size = font.getSize();
String name = font.getName();
int style = font.getStyle();
while ( !fontFits ) {
if ( (fontMetrics.getHeight() <= maxCharHeight)
&& (fontMetrics.stringWidth(longString) <= xSpace) ) {
fontFits = true;
}
else {
if ( size <= minFontSize ) {
fontFits = true;
}
else {
g2.setFont(font = new Font(name,
style,
--size));
fontMetrics = g2.getFontMetrics();
}
}
}
return fontMetrics;
}
public void paint(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
Dimension d = getSize();
int gridWidth = d.width / 6;
int gridHeight = d.height / 2;
fontMetrics = pickFont(g2, "Filled and Stroked GeneralPath",
gridWidth);
Color fg3D = Color.lightGray;
g2.setPaint(fg3D);
g2.draw3DRect(0, 0, d.width - 1, d.height - 1, true);
g2.draw3DRect(3, 3, d.width - 7, d.height - 7, false);
g2.setPaint(fg);
int x = 5;
int y = 7;
int rectWidth = gridWidth - 2*x;
int stringY = gridHeight - 3 - fontMetrics.getDescent();
int rectHeight = stringY - fontMetrics.getMaxAscent() - y - 2;
// draw Line2D.Double
g2.draw(new Line2D.Double(x, y+rectHeight-1, x + rectWidth, y));
g2.drawString("Line2D", x, stringY);
x += gridWidth;
// draw Rectangle2D.Double
g2.setStroke(stroke);
g2.draw(new Rectangle2D.Double(x, y, rectWidth, rectHeight));
g2.drawString("Rectangle2D", x, stringY);
x += gridWidth;
// draw RoundRectangle2D.Double
g2.setStroke(dashed);
g2.draw(new RoundRectangle2D.Double(x, y, rectWidth,
rectHeight, 10, 10));
g2.drawString("RoundRectangle2D", x, stringY);
x += gridWidth;
// draw Arc2D.Double
g2.setStroke(wideStroke);
g2.draw(new Arc2D.Double(x, y, rectWidth, rectHeight, 90,
135, Arc2D.OPEN));
g2.drawString("Arc2D", x, stringY);
x += gridWidth;
// draw Ellipse2D.Double
g2.setStroke(stroke);
g2.draw(new Ellipse2D.Double(x, y, rectWidth, rectHeight));
g2.drawString("Ellipse2D", x, stringY);
x += gridWidth;
// draw GeneralPath (polygon)
int x1Points[] = {x, x+rectWidth, x, x+rectWidth};
int y1Points[] = {y, y+rectHeight, y+rectHeight, y};
GeneralPath polygon = new GeneralPath(GeneralPath.WIND_EVEN_ODD,
x1Points.length);
polygon.moveTo(x1Points[0], y1Points[0]);
for ( int index = 1; index < x1Points.length; index++ ) {
polygon.lineTo(x1Points[index], y1Points[index]);
};
polygon.closePath();
g2.draw(polygon);
g2.drawString("GeneralPath", x, stringY);
// NEW ROW
x = 5;
y += gridHeight;
stringY += gridHeight;
// draw GeneralPath (polyline)
int x2Points[] = {x, x+rectWidth, x, x+rectWidth};
int y2Points[] = {y, y+rectHeight, y+rectHeight, y};
GeneralPath polyline = new GeneralPath(GeneralPath.WIND_EVEN_ODD,
x2Points.length);
polyline.moveTo (x2Points[0], y2Points[0]);
for ( int index = 1; index < x2Points.length; index++ ) {
polyline.lineTo(x2Points[index], y2Points[index]);
};
g2.draw(polyline);
g2.drawString("GeneralPath (open)", x, stringY);
x += gridWidth;
// fill Rectangle2D.Double (red)
g2.setPaint(red);
g2.fill(new Rectangle2D.Double(x, y, rectWidth, rectHeight));
g2.setPaint(fg);
g2.drawString("Filled Rectangle2D", x, stringY);
x += gridWidth;
// fill RoundRectangle2D.Double
GradientPaint redtowhite = new GradientPaint(x,y,red,x+rectWidth, y,white);
g2.setPaint(redtowhite);
g2.fill(new RoundRectangle2D.Double(x, y, rectWidth,
rectHeight, 10, 10));
g2.setPaint(fg);
g2.drawString("Filled RoundRectangle2D", x, stringY);
x += gridWidth;
// fill Arc2D
g2.setPaint(red);
g2.fill(new Arc2D.Double(x, y, rectWidth, rectHeight, 90,
135, Arc2D.OPEN));
g2.setPaint(fg);
g2.drawString("Filled Arc2D", x, stringY);
x += gridWidth;
// fill Ellipse2D.Double
redtowhite = new GradientPaint(x,y,red,x+rectWidth, y,white);
g2.setPaint(redtowhite);
g2.fill (new Ellipse2D.Double(x, y, rectWidth, rectHeight));
g2.setPaint(fg);
g2.drawString("Filled Ellipse2D", x, stringY);
x += gridWidth;
// fill and stroke GeneralPath
int x3Points[] = {x, x+rectWidth, x, x+rectWidth};
int y3Points[] = {y, y+rectHeight, y+rectHeight, y};
GeneralPath filledPolygon = new GeneralPath(GeneralPath.WIND_EVEN_ODD,
x3Points.length);
filledPolygon.moveTo(x3Points[0], y3Points[0]);
for ( int index = 1; index < x3Points.length; index++ ) {
filledPolygon.lineTo(x3Points[index], y3Points[index]);
};
filledPolygon.closePath();
g2.setPaint(red);
g2.fill(filledPolygon);
g2.setPaint(fg);
g2.draw(filledPolygon);
g2.drawString("Filled and Stroked GeneralPath", x, stringY);
}
public static void main(String s[]) {
JFrame f = new JFrame("ShapesDemo2D");
f.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {System.exit(0);}
});
JApplet applet = new ShapesDemo2D();
f.getContentPane().add("Center", applet);
applet.init();
f.pack();
f.setSize(new Dimension(550,100));
f.show();
}
}
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