@Override
public void paintComponent(Graphics g) {
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
int p = startAngle;
int total = -1;
for (PieSlice entry : entries) {
total += entry.getValue();
}
for (int i = 0; i < entries.size(); i++) {
PieSlice entry = entries.get(i);
g2d.setColor(entry.getColor());
double val = entry.getValue();
double angle = (val / total) * 360;
g2d.fillArc(0, 0, super.getWidth(), super.getWidth(), p, (int) angle);
p = (int) (p + angle);
}
}
public void onDraw(Canvas canvas) {
canvas.drawColor(Color.TRANSPARENT);
paint.reset();
paint.setAntiAlias(true);
float midX, midY, radius, innerRadius;
path.reset();
float currentAngle = 270;
float currentSweep;
int totalValue = 0;
float padding = 2;
midX = getWidth() / 2;
midY = getHeight() / 2;
if (midX < midY) {
radius = midX;
} else {
radius = midY;
}
radius -= padding;
innerRadius = radius - thickness;
for (PieSlice slice : slices) {
totalValue += slice.getValue();
}
int count = 0;
for (PieSlice slice : slices) {
Path p = new Path();
paint.setColor(slice.getColor());
currentSweep = (slice.getValue() / totalValue) * (360);
p.arcTo(
new RectF(midX - radius, midY - radius, midX + radius, midY + radius),
currentAngle + padding,
currentSweep - padding);
p.arcTo(
new RectF(midX - innerRadius, midY - innerRadius, midX + innerRadius, midY + innerRadius),
(currentAngle + padding) + (currentSweep - padding),
-(currentSweep - padding));
p.close();
slice.setPath(p);
slice.setRegion(
new Region(
(int) (midX - radius),
(int) (midY - radius),
(int) (midX + radius),
(int) (midY + radius)));
canvas.drawPath(p, paint);
if (indexSelected == count && listener != null) {
path.reset();
paint.setColor(slice.getColor());
paint.setColor(Color.parseColor("#33B5E5"));
paint.setAlpha(100);
if (slices.size() > 1) {
path.arcTo(
new RectF(
midX - radius - (padding * 2),
midY - radius - (padding * 2),
midX + radius + (padding * 2),
midY + radius + (padding * 2)),
currentAngle,
currentSweep + padding);
path.arcTo(
new RectF(
midX - innerRadius + (padding * 2),
midY - innerRadius + (padding * 2),
midX + innerRadius - (padding * 2),
midY + innerRadius - (padding * 2)),
currentAngle + currentSweep + padding,
-(currentSweep + padding));
path.close();
} else {
path.addCircle(midX, midY, radius + padding, Direction.CW);
}
canvas.drawPath(path, paint);
paint.setAlpha(255);
}
currentAngle = currentAngle + currentSweep;
count++;
}
}
