@Override
public void renderGridLines(Canvas c) {
if (!mXAxis.isDrawGridLinesEnabled() || !mXAxis.isEnabled()) return;
float[] position = new float[] {0f, 0f};
mGridPaint.setColor(mXAxis.getGridColor());
mGridPaint.setStrokeWidth(mXAxis.getGridLineWidth());
BarData bd = mChart.getData();
int step = bd.getDataSetCount();
for (int i = mMinX; i < mMaxX; i += mXAxis.mAxisLabelModulus) {
position[0] = i * step + i * bd.getGroupSpace() - 0.5f;
mTrans.pointValuesToPixel(position);
if (mViewPortHandler.isInBoundsX(position[0])) {
c.drawLine(
position[0],
mViewPortHandler.offsetTop(),
position[0],
mViewPortHandler.contentBottom(),
mGridPaint);
}
}
}
/**
* draws the x-labels on the specified y-position
*
* @param pos
*/
@Override
protected void drawLabels(Canvas c, float pos) {
// pre allocate to save performance (dont allocate in loop)
float[] position = new float[] {0f, 0f};
BarData bd = mChart.getData();
int step = bd.getDataSetCount();
for (int i = mMinX; i <= mMaxX; i += mXAxis.mAxisLabelModulus) {
position[0] = i * step + i * bd.getGroupSpace() + bd.getGroupSpace() / 2f;
// consider groups (center label for each group)
if (step > 1) {
position[0] += ((float) step - 1f) / 2f;
}
mTrans.pointValuesToPixel(position);
if (mViewPortHandler.isInBoundsX(position[0]) && i >= 0 && i < mXAxis.getValues().size()) {
String label = mXAxis.getValues().get(i);
if (mXAxis.isAvoidFirstLastClippingEnabled()) {
// avoid clipping of the last
if (i == mXAxis.getValues().size() - 1) {
float width = Utils.calcTextWidth(mAxisLabelPaint, label);
if (width > mViewPortHandler.offsetRight() * 2
&& position[0] + width > mViewPortHandler.getChartWidth()) position[0] -= width / 2;
// avoid clipping of the first
} else if (i == 0) {
float width = Utils.calcTextWidth(mAxisLabelPaint, label);
position[0] += width / 2;
}
}
drawLabel(c, label, i, position[0], pos);
}
}
}