Java 2D shapes demo

importjava.awt.*;

importjava.awt.event.*;

importjava.awt.geom.*;

importjavax.swing.*;

/*

* This is like the FontDemoappletinvolume 1, except that it

* uses the Java 2D APIs to define and renderthe graphics and text.

*/

publicclassShapesDemo2DextendsJApplet {

finalstaticintmaxCharHeight= 15;

finalstaticintminFontSize= 6;

finalstaticColorbg= Color.white;

finalstaticColorfg= Color.black;

finalstaticColorred= Color.red;

finalstaticColorwhite= Color.white;

finalstaticBasicStrokestroke=newBasicStroke(2.0f);

finalstaticBasicStrokewideStroke=newBasicStroke(8.0f);

finalstaticfloatdash1[] = {10.0f};

finalstaticBasicStrokedashed=newBasicStroke(1.0f,

BasicStroke.CAP_BUTT,

BasicStroke.JOIN_MITER,

10.0f,dash1, 0.0f);

DimensiontotalSize;

FontMetricsfontMetrics;

publicvoidinit() {

//Initialize drawing colors

setBackground(bg);

setForeground(fg);

}

FontMetrics pickFont(Graphics2Dg2,

StringlongString,

intxSpace) {

booleanfontFits=false;

Fontfont=g2.getFont();

FontMetricsfontMetrics=g2.getFontMetrics();

intsize=font.getSize();

Stringname=font.getName();

intstyle=font.getStyle();

while( !fontFits) {

if( (fontMetrics.getHeight()

<=maxCharHeight)

&& (fontMetrics.stringWidth(longString) <=xSpace) ) {

fontFits=true;

}

else{

if(size<=minFontSize) {

fontFits=true;

}

else{

g2.setFont(font=newFont(name,

style,

--size));

fontMetrics=g2.getFontMetrics();

}

}

}

returnfontMetrics;

}

publicvoidpaint(Graphicsg) {

Graphics2Dg2= (Graphics2D)g;

g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,

RenderingHints.VALUE_ANTIALIAS_ON);

Dimensiond= getSize();

intgridWidth=d.width/ 6;

intgridHeight=d.height/ 2;

fontMetrics= pickFont(g2,"Filled

and Stroked GeneralPath",

gridWidth);

Colorfg3D= 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);

intx= 5;

inty= 7;

intrectWidth=gridWidth- 2*x;

intstringY=gridHeight- 3 -fontMetrics.getDescent();

intrectHeight=stringY-fontMetrics.getMaxAscent()

-y- 2;

// draw Line2D.Double

g2.draw(newLine2D.Double(x,y+rectHeight-1,x+rectWidth,y));

g2.drawString("Line2D",x,stringY);

x+=gridWidth;

// draw Rectangle2D.Double

g2.setStroke(stroke);

g2.draw(newRectangle2D.Double(x,y,rectWidth,rectHeight));

g2.drawString("Rectangle2D",x,stringY);

x+=gridWidth;

// drawRoundRectangle2D.Double

g2.setStroke(dashed);

g2.draw(newRoundRectangle2D.Double(x,y,rectWidth,

rectHeight, 10, 10));

g2.drawString("RoundRectangle2D",x,stringY);

x+=gridWidth;

// draw Arc2D.Double

g2.setStroke(wideStroke);

g2.draw(newArc2D.Double(x,y,rectWidth,rectHeight, 90,

135, Arc2D.OPEN));

g2.drawString("Arc2D",x,stringY);

x+=gridWidth;

// draw Ellipse2D.Double

g2.setStroke(stroke);

g2.draw(newEllipse2D.Double(x,y,rectWidth,rectHeight));

g2.drawString("Ellipse2D",x,stringY);

x+=gridWidth;

// draw GeneralPath (polygon)

intx1Points[] = {x,x+rectWidth,x,x+rectWidth};

inty1Points[] = {y,y+rectHeight,y+rectHeight,y};

GeneralPathpolygon=newGeneralPath(GeneralPath.WIND_EVEN_ODD,

x1Points.length);

polygon.moveTo(x1Points[0],y1Points[0]);

for(intindex= 1;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)

intx2Points[] = {x,x+rectWidth,x,x+rectWidth};

inty2Points[] = {y,y+rectHeight,y+rectHeight,y};

GeneralPathpolyline=newGeneralPath(GeneralPath.WIND_EVEN_ODD,

x2Points.length);

polyline.moveTo (x2Points[0],y2Points[0]);

for(intindex= 1;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(newRectangle2D.Double(x,y,rectWidth,rectHeight));

g2.setPaint(fg);

g2.drawString("Filled

Rectangle2D",x,stringY);

x+=gridWidth;

// fill RoundRectangle2D.Double

GradientPaintredtowhite=newGradientPaint(x,y,red,x+rectWidth,y,white);

g2.setPaint(redtowhite);

g2.fill(newRoundRectangle2D.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(newArc2D.Double(x,y,rectWidth,rectHeight, 90,

135, Arc2D.OPEN));

g2.setPaint(fg);

g2.drawString("Filled

Arc2D",x,stringY);

x+=gridWidth;

// fill Ellipse2D.Double

redtowhite=newGradientPaint(x,y,red,x+rectWidth,y,white);

g2.setPaint(redtowhite);

g2.fill (newEllipse2D.Double(x,y,rectWidth,rectHeight));

g2.setPaint(fg);

g2.drawString("Filled

Ellipse2D",x,stringY);

x+=gridWidth;

// fill and stroke GeneralPath

intx3Points[] = {x,x+rectWidth,x,x+rectWidth};

inty3Points[] = {y,y+rectHeight,y+rectHeight,y};

GeneralPathfilledPolygon=newGeneralPath(GeneralPath.WIND_EVEN_ODD,

x3Points.length);

filledPolygon.moveTo(x3Points[0],y3Points[0]);

for(intindex= 1;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);

}

publicstaticvoidmain(Strings[]) {

JFramef=newJFrame("ShapesDemo2D");

f.addWindowListener(newWindowAdapter()

{

publicvoidwindowClosing(WindowEvente) {System.exit(0);}

});

JAppletapplet=newShapesDemo2D();

f.getContentPane().add("Center",applet);

applet.init();

f.pack();

f.setSize(newDimension(550,100));

f.setVisible(true);

}

}