FontMetrics fm = this.getFontMetrics(this.getFont()) ;
int xmargin = 5;
int lineHeight = fm.getMaxAscent() + fm.getMaxDescent();
int y = lineHeight;
int x = xmargin;
int desiredPixelWidth = 3 * fm.getMaxAdvance();
int fieldWidth = 6 * fm.getMaxAdvance();
int headerWidth = fm.stringWidth("Degrees");
g.drawString("Degrees", x + (fieldWidth - headerWidth)/2, y);
headerWidth = fm.stringWidth("Radians");
g.drawString("Radians", x + fieldWidth + (fieldWidth - headerWidth)/2, y);
headerWidth = fm.stringWidth("Grads");
g.drawString("Grads", x + 2*fieldWidth + (fieldWidth - headerWidth)/2, y);
for (double degrees = 0.0; degrees < 360.0; degrees++) {
y += lineHeight;
String degreeString = myFormat.format(degrees, new StringBuffer(),
fp).toString();
String intPart = degreeString.substring(0, fp.getEndIndex());
g.drawString(degreeString, xmargin + desiredPixelWidth
- fm.stringWidth(intPart), y);
String radianString = myFormat.format(Math.PI*degrees/180.0,
new StringBuffer(), fp).toString();
intPart = radianString.substring(0, fp.getEndIndex());
g.drawString(radianString,
xmargin + fieldWidth + desiredPixelWidth - fm.stringWidth(intPart), y);
String gradString = myFormat.format(400 * degrees / 360,
new StringBuffer(), fp).toString();
intPart = gradString.substring(0, fp.getEndIndex());
g.drawString(gradString,
xmargin + 2*fieldWidth + desiredPixelWidth - fm.stringWidth(intPart), y);
}
