public Dimension getPreferredSize() {
Graphics g = getGraphics();
FontMetrics fm = g.getFontMetrics();
Dimension d;
Insets insets = getInsets();
int width = 0;
int height = 0;
int w;
/*
* Formal parameters
*/
if (formalParametersText != null) {
d = formalParametersText.getPreferredSize();
w =
GenericFormal
+ fm.stringWidth(GenPre)
+ GenericFormalSpace
+ d.width
+ GenericFormalSpace
+ fm.stringWidth(GenPost);
if (w > width) width = w;
height += d.height + InterVMargin;
} else {
w = GenericFormal;
if (w > width) width = w;
height += InterVMargin;
// height += fm.getHeight() + InterVMargin;
}
/*
* Declaration
*/
d = declarationText.getPreferredSize();
if ((d.width + GenericContentOffset) > width) width = d.width + GenericContentOffset;
height += d.height + InterVMargin;
/*
* Predicates
*/
if (predicateText != null) {
height += GenericLineMargin;
d = predicateText.getPreferredSize();
if ((d.width + GenericContentOffset) > width) width = d.width + GenericContentOffset;
height += d.height + InterVMargin;
}
width += insets.left + insets.right + GenericExtraLine;
height += insets.top + insets.bottom;
width += HMargin * 2;
height += VMargin * 2;
return new Dimension(width, height);
}
public void doLayout() {
Insets insets = getInsets();
Graphics g = getGraphics();
FontMetrics fm = g.getFontMetrics();
Dimension d;
int x = insets.left;
int y = insets.top;
x += HMargin;
y += VMargin;
if (formalParametersText != null) {
d = formalParametersText.getPreferredSize();
formalParametersText.setBounds(
x + GenericFormal + GenericFormalSpace + fm.stringWidth(GenPre), y, d.width, d.height);
y += d.height + InterVMargin;
} else {
// y += fm.getHeight() + InterVMargin;
y += InterVMargin;
}
d = declarationText.getPreferredSize();
declarationText.setBounds(x + GenericContentOffset, y, d.width, d.height);
y += d.height + InterVMargin;
y += GenericLineMargin;
if (predicateText != null) {
d = predicateText.getPreferredSize();
predicateText.setBounds(x + GenericContentOffset, y, d.width, d.height);
y += d.height + InterVMargin;
}
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
int xoffset = 0;
int yoffset = 0;
Dimension d;
int y = 0;
FontMetrics fm = g.getFontMetrics();
Dimension cd = getPreferredSize();
int declsHeight = 0;
xoffset += HMargin;
yoffset += VMargin;
g.setColor(Color.BLACK);
if (formalParametersText != null) {
d = formalParametersText.getPreferredSize();
yoffset += d.height - FormalLineMargin;
g.drawLine(xoffset, yoffset, xoffset + GenericFormal, yoffset);
g.drawString(GenPre, xoffset + GenericFormal + GenericFormalSpace, yoffset);
g.drawString(
GenPost,
xoffset + GenericFormalSpace + GenericFormal + fm.stringWidth(GenPre) + d.width,
yoffset);
g.drawLine(
xoffset
+ GenericFormal
+ GenericFormalSpace
+ d.width
+ GenericFormalSpace
+ fm.stringWidth(GenPost),
yoffset,
cd.width - 1 - HMargin,
yoffset);
g.drawLine(xoffset, yoffset, xoffset, yoffset - 2);
g.drawLine(xoffset, yoffset - 2, xoffset + GenericFormal, yoffset - 2);
g.drawLine(
xoffset
+ GenericFormal
+ GenericFormalSpace
+ d.width
+ GenericFormalSpace
+ fm.stringWidth(GenPost),
yoffset - 2,
cd.width - 1 - HMargin,
yoffset - 2);
} else {
// yoffset += fm.getHeight() - FormalLineMargin + InterVMargin;
yoffset -= FormalLineMargin;
yoffset += InterVMargin;
g.drawLine(xoffset, yoffset, cd.width - 1 - HMargin, yoffset);
g.drawLine(xoffset, yoffset, xoffset, yoffset - 2);
g.drawLine(xoffset, yoffset - 2, cd.width - 1 - HMargin, yoffset - 2);
}
d = declarationText.getPreferredSize();
declsHeight += d.height + InterVMargin;
g.drawLine(xoffset, yoffset, xoffset, yoffset + declsHeight + FormalLineMargin + InterVMargin);
yoffset += InterVMargin;
yoffset += declsHeight + FormalLineMargin;
if (predicateText != null) {
g.drawLine(xoffset, yoffset, cd.width - 1 - HMargin, yoffset);
g.drawLine(xoffset, yoffset, xoffset, cd.height - 1 - VMargin);
g.drawLine(xoffset, cd.height - 1 - VMargin, cd.width - 1 - HMargin, cd.height - 1 - VMargin);
}
}