/** Calculate the rectangle occupied by the data */
protected Rectangle getDataRectangle(Graphics g, Rectangle r) {
Axis a;
int waxis;
int x = r.x;
int y = r.y;
int width = r.width;
int height = r.height;
for (int i = 0; i < axis.size(); i++) {
a = ((Axis) axis.elementAt(i));
waxis = a.getAxisWidth(g);
switch (a.getAxisPos()) {
case Axis.LEFT:
x += waxis;
width -= waxis;
break;
case Axis.RIGHT:
width -= waxis;
break;
case Axis.TOP:
y += waxis;
height -= waxis;
break;
case Axis.BOTTOM:
height -= waxis;
break;
}
}
return new Rectangle(x, y, width, height);
}
/**
* Draw the Axis. As each axis is drawn and aligned less of the canvas is avaliable to plot the
* data. The returned Rectangle is the canvas area that the data is plotted in.
*/
protected Rectangle drawAxis(Graphics g, Rectangle r) {
Axis a;
int waxis;
Rectangle dr;
int x;
int y;
int width;
int height;
if (square) r = ForceSquare(g, r);
dr = getDataRectangle(g, r);
x = dr.x;
y = dr.y;
width = dr.width;
height = dr.height;
if (clearAll) {
Color c = g.getColor();
g.setColor(DataBackground);
g.fillRect(x, y, width, height);
g.setColor(c);
}
// Draw a frame around the data area (If requested)
if (frame) drawFrame(g, x, y, width, height);
// Now draw the axis in the order specified aligning them with the final
// data area.
for (int i = 0; i < axis.size(); i++) {
a = ((Axis) axis.elementAt(i));
a.data_window = new Dimension(width, height);
switch (a.getAxisPos()) {
case Axis.LEFT:
r.x += a.width;
r.width -= a.width;
a.positionAxis(r.x, r.x, y, y + height);
if (r.x == x) {
a.gridcolor = gridcolor;
a.drawgrid = drawgrid;
a.zerocolor = zerocolor;
a.drawzero = drawzero;
}
a.drawAxis(g);
a.drawgrid = false;
a.drawzero = false;
break;
case Axis.RIGHT:
r.width -= a.width;
a.positionAxis(r.x + r.width, r.x + r.width, y, y + height);
if (r.x + r.width == x + width) {
a.gridcolor = gridcolor;
a.drawgrid = drawgrid;
a.zerocolor = zerocolor;
a.drawzero = drawzero;
}
a.drawAxis(g);
a.drawgrid = false;
a.drawzero = false;
break;
case Axis.TOP:
r.y += a.width;
r.height -= a.width;
a.positionAxis(x, x + width, r.y, r.y);
if (r.y == y) {
a.gridcolor = gridcolor;
a.drawgrid = drawgrid;
a.zerocolor = zerocolor;
a.drawzero = drawzero;
}
a.drawAxis(g);
a.drawgrid = false;
a.drawzero = false;
break;
case Axis.BOTTOM:
r.height -= a.width;
a.positionAxis(x, x + width, r.y + r.height, r.y + r.height);
if (r.y + r.height == y + height) {
a.gridcolor = gridcolor;
a.drawgrid = drawgrid;
a.zerocolor = zerocolor;
a.drawzero = drawzero;
}
a.drawAxis(g);
a.drawgrid = false;
a.drawzero = false;
break;
}
}
return r;
}