Rectangle drawHere = g.getClipBounds();
// Fill clipping area with dirty brown/orange.
g.setColor(new Color(230, 163, 4));
g.fillRect(drawHere.x, drawHere.y, drawHere.width, drawHere.height);
// Do the ruler labels in a small font that's black.
g.setFont(new Font("SansSerif", Font.PLAIN, 10));
g.setColor(Color.black);
// Some vars we need.
int end = 0;
int start = 0;
int tickLength = 0;
String text = null;
// Use clipping bounds to calculate first tick and last tick location.
if (orientation == HORIZONTAL) {
start = (drawHere.x / increment) * increment;
end = (((drawHere.x + drawHere.width) / increment) + 1)
* increment;
} else {
start = (drawHere.y / increment) * increment;
end = (((drawHere.y + drawHere.height) / increment) + 1)
* increment;
}
// Make a special case of 0 to display the number
// within the rule and draw a units label.
if (start == 0) {
text = Integer.toString(0) + (isMetric ? " cm" : " in");
tickLength = 10;
if (orientation == HORIZONTAL) {
g.drawLine(0, SIZE-1, 0, SIZE-tickLength-1);
g.drawString(text, 2, 21);
} else {
g.drawLine(SIZE-1, 0, SIZE-tickLength-1, 0);
g.drawString(text, 9, 10);
}
text = null;
start = increment;
}
// ticks and labels
for (int i = start; i < end; i += increment) {
if (i % units == 0) {
tickLength = 10;
text = Integer.toString(i/units);
} else {
tickLength = 7;
text = null;
}
if (tickLength != 0) {
if (orientation == HORIZONTAL) {
g.drawLine(i, SIZE-1, i, SIZE-tickLength-1);
if (text != null)
g.drawString(text, i-3, 21);
} else {
g.drawLine(SIZE-1, i, SIZE-tickLength-1, i);
if (text != null)
g.drawString(text, 9, i+3);
}
}
}
