public MeterFigure() {
super();
// TODO, remove this if clip is supported by RAP
if (SWT.getPlatform().startsWith("rap")) // $NON-NLS-1$
ramp.setVisible(false);
setTransparent(false);
scale.setScaleLineVisible(false);
((RoundScale) scale).setStartAngle(180 - SPACE_ANGLE);
((RoundScale) scale).setEndAngle(SPACE_ANGLE);
ramp.setRampWidth(12);
setLoColor(XYGraphMediaFactory.getInstance().getColor(XYGraphMediaFactory.COLOR_YELLOW));
setHiColor(XYGraphMediaFactory.getInstance().getColor(XYGraphMediaFactory.COLOR_YELLOW));
valueLabel = new Label();
valueLabel.setFont(DEFAULT_LABEL_FONT);
needle = new Needle();
needle.setFill(true);
needle.setOutline(false);
// needleCenter = new Ellipse();
// needleCenter.setOutline(false);
setLayoutManager(new XMeterLayout());
add(ramp, XMeterLayout.RAMP);
add(scale, XMeterLayout.SCALE);
add(needle, XMeterLayout.NEEDLE);
// add(needleCenter, XMeterLayout.NEEDLE_CENTER);
add(valueLabel, XMeterLayout.VALUE_LABEL);
addFigureListener(
new FigureListener() {
public void figureMoved(IFigure source) {
ramp.setDirty(true);
revalidate();
}
});
}
public void layout(IFigure container) {
Rectangle area = container.getClientArea();
// calculate a virtual area
if (scale != null && scale.isDirty())
M =
Math.max(
FigureUtilities.getTextWidth(
scale.format(scale.getRange().getLower()), scale.getFont()),
FigureUtilities.getTextWidth(
scale.format(scale.getRange().getUpper()), scale.getFont()))
/ 2;
int h = area.height;
int w = area.width;
if (h > HW_RATIO * (w - 2 * M)) h = (int) (HW_RATIO * (w - 2 * M));
// else if (w > h/HW_RATIO + 2*M)
// w = (int) (h/HW_RATIO + 2*M);
double r = h / (1 - Math.sin(ALPHA) / 2);
int x = (int) (area.x - r * (1.0 - Math.cos(ALPHA)) + M);
int y = area.y;
area = new Rectangle(x, y, (int) (2 * r), (int) (2 * r));
Point center = area.getCenter();
if (scale != null) {
scale.setBounds(area);
}
if (ramp != null && ramp.isVisible()) {
Rectangle rampBounds = area.getCopy();
ramp.setBounds(
rampBounds.shrink(
area.width / 4 - ramp.getRampWidth(), area.height / 4 - ramp.getRampWidth()));
}
if (valueLabel != null) {
Dimension labelSize = valueLabel.getPreferredSize();
valueLabel.setBounds(
new Rectangle(
area.x + area.width / 2 - labelSize.width / 2,
area.y
+ area.height / 2
- area.height / 4
- (scale.getInnerRadius() - area.height / 4) / 2
- labelSize.height / 2,
labelSize.width,
labelSize.height));
}
if (needle != null && scale != null) {
needlePoints.setPoint(
new Point(center.x + area.width / 4, center.y - NEEDLE_WIDTH / 2 + 3), 0);
scale.getScaleTickMarks();
needlePoints.setPoint(
new Point(center.x + scale.getInnerRadius() - GAP_BTW_NEEDLE_SCALE, center.y), 1);
needlePoints.setPoint(
new Point(center.x + area.width / 4, center.y + NEEDLE_WIDTH / 2 - 3), 2);
double valuePosition = 360 - scale.getValuePosition(getCoercedValue(), false);
if (maximum > minimum) {
if (value > maximum) valuePosition += 8;
else if (value < minimum) valuePosition -= 8;
} else {
if (value > minimum) valuePosition -= 8;
else if (value < maximum) valuePosition += 8;
}
needlePoints.setPoint(
PointsUtil.rotate(needlePoints.getPoint(0), valuePosition, center), 0);
needlePoints.setPoint(
PointsUtil.rotate(needlePoints.getPoint(1), valuePosition, center), 1);
needlePoints.setPoint(
PointsUtil.rotate(needlePoints.getPoint(2), valuePosition, center), 2);
needle.setPoints(needlePoints);
}
// if(needleCenter != null){
// needleCenter.setBounds(new Rectangle(center.x - area.width/4,
// center.y - area.height/4,
// area.width/2, area.height/2));
// }
}