@Override
public void drawHighlighted(Canvas c, Highlight[] indices) {
float rotationAngle = mChart.getRotationAngle();
float angle = 0f;
float[] drawAngles = mChart.getDrawAngles();
float[] absoluteAngles = mChart.getAbsoluteAngles();
for (int i = 0; i < indices.length; i++) {
// get the index to highlight
int xIndex = indices[i].getXIndex();
if (xIndex >= drawAngles.length) continue;
PieDataSet set = mChart.getData().getDataSetByIndex(indices[i].getDataSetIndex());
if (set == null || !set.isHighlightEnabled()) continue;
if (xIndex == 0) angle = rotationAngle;
else angle = rotationAngle + absoluteAngles[xIndex - 1];
angle *= mAnimator.getPhaseY();
float sliceDegrees = drawAngles[xIndex];
float shift = set.getSelectionShift();
RectF circleBox = mChart.getCircleBox();
/**
* Make the box containing current arc larger equally in every dimension, to preserve shape of
* arc. Code provided by:
*
* @link https://github.com/wogg
*/
RectF highlighted =
new RectF(
circleBox.left - shift,
circleBox.top - shift,
circleBox.right + shift,
circleBox.bottom + shift);
mRenderPaint.setColor(set.getColor(xIndex));
// redefine the rect that contains the arc so that the
// highlighted pie is not cut off
mBitmapCanvas.drawArc(
highlighted,
angle + set.getSliceSpace() / 2f,
sliceDegrees * mAnimator.getPhaseY() - set.getSliceSpace() / 2f,
true,
mRenderPaint);
}
}
protected void drawDataSet(Canvas c, PieDataSet dataSet) {
float angle = mChart.getRotationAngle();
List<Entry> entries = dataSet.getYVals();
float[] drawAngles = mChart.getDrawAngles();
for (int j = 0; j < entries.size(); j++) {
float newangle = drawAngles[j];
float sliceSpace = dataSet.getSliceSpace();
Entry e = entries.get(j);
// draw only if the value is greater than zero
if ((Math.abs(e.getVal()) > 0.000001)) {
if (!mChart.needsHighlight(e.getXIndex(), mChart.getData().getIndexOfDataSet(dataSet))) {
mRenderPaint.setColor(dataSet.getColor(j));
mBitmapCanvas.drawArc(
mChart.getCircleBox(),
(angle + sliceSpace / 2f) * mAnimator.getPhaseY(),
(newangle - sliceSpace / 2f) * mAnimator.getPhaseY(),
true,
mRenderPaint);
}
}
angle += newangle * mAnimator.getPhaseX();
}
}