private LayoutInfo layout() {
LayoutInfo info = new LayoutInfo();
info.labelHeight = labelPaint.descent() - labelPaint.ascent();
float maxMarkerSize = Float.MIN_VALUE;
float maxLength = Float.MIN_VALUE;
for (Entry entry : entryList) {
float length = labelPaint.measureText(entry.label);
if (maxLength < length) maxLength = length;
float markerSize = entry.painter.getDrawConfig().getMarkerSize();
if (markerSize > maxMarkerSize) maxMarkerSize = markerSize;
}
info.markerWidth = maxMarkerSize;
info.frame.left = 0;
info.frame.top = 0;
info.frame.right =
2 * info.margin
+ info.markerWidth
+ info.markerXSpacing
+ maxLength
+ 2 * info.markerLineSpace;
info.frame.bottom = 2 * info.margin + entryList.size() * (info.labelHeight + info.labelSpacing);
return info;
}
@Override
public void onDraw(Canvas canvas) {
if (layoutInfo == null) layoutInfo = layout();
float width = containerView.getWidth();
float margin = 10f;
canvas.save();
canvas.translate(width - layoutInfo.frame.width() - margin, margin);
// draw background
canvas.drawRect(layoutInfo.frame, backgroundPaint);
canvas.drawRect(layoutInfo.frame, borderPaint);
// draw markers
float x = layoutInfo.getMarkerX();
float lineLeft = layoutInfo.getMarkerLineLeft();
float lineRight = layoutInfo.getMarkerLineRight();
for (int i = 0; i < entryList.size(); i++) {
Entry entry = entryList.get(i);
float y = layoutInfo.margin + (layoutInfo.labelHeight + layoutInfo.labelSpacing) * (0.5f + i);
canvas.drawLine(lineLeft, y, lineRight, y, entry.getPainter().getDrawConfig().getLinePaint());
tempPoint.set(x, y);
IPointRenderer pointRenderer = entry.painter.getPointRenderer();
pointRenderer.drawPoint(canvas, tempPoint, entry.painter.getDrawConfig());
}
// draw labels
x = layoutInfo.getLabelStartX();
for (int i = 0; i < entryList.size(); i++) {
Entry entry = entryList.get(i);
float y =
layoutInfo.margin
+ (layoutInfo.labelHeight + layoutInfo.labelSpacing) * i
+ layoutInfo.labelHeight;
canvas.drawText(entry.getLabel(), x, y, labelPaint);
}
canvas.restore();
}