@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); } }
@Override public boolean onTouchEvent(MotionEvent event) { Point point = new Point(); point.x = (int) event.getX(); point.y = (int) event.getY(); int count = 0; for (PieSlice slice : slices) { Region r = new Region(); r.setPath(slice.getPath(), slice.getRegion()); if (r.contains(point.x, point.y) && event.getAction() == MotionEvent.ACTION_DOWN) { indexSelected = count; } else if (event.getAction() == MotionEvent.ACTION_UP) { if (r.contains(point.x, point.y) && listener != null) { if (indexSelected > -1) { listener.onClick(indexSelected); } indexSelected = -1; } } count++; } if (event.getAction() == MotionEvent.ACTION_DOWN || event.getAction() == MotionEvent.ACTION_UP) { postInvalidate(); } return true; }
@Override public void paintComponent(Graphics g) { if (slices != null && !slices.isEmpty()) { Arc2D arc2D = null; double start = 0; int size = Math.min(getWidth(), getHeight()) - 10; int x = getWidth() / 2 - size / 2; int y = getHeight() / 2 - size / 2; if (g instanceof Graphics2D) { arc2D = new Arc2D.Double(Arc2D.PIE); arc2D.setFrame(x, y, size, size); ((Graphics2D) g) .setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); } for (PieSlice slice : slices) { double arc = (slice.cost / total) * 360.0; if (g instanceof Graphics2D) { arc2D.setAngleStart(start); arc2D.setAngleExtent(arc); Color c = ScenarioColorPalette.getColor(slice.toString()); g.setColor(slice.equals(highlighted) ? c.brighter() : c); ((Graphics2D) g).fill(arc2D); g.setColor(Color.BLACK); ((Graphics2D) g).draw(arc2D); } else { g.setColor(ScenarioColorPalette.getColor(slice.toString())); g.fillArc(x, y, size, size, (int) start, (int) arc); g.setColor(Color.BLACK); g.drawArc(x, y, size, size, (int) start, (int) arc); } start += arc; } g.setColor(ScenarioColorPalette.getColor("Untagged")); g.fillArc(x, y, size, size, (int) start, (int) (360.0 - start)); } }
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++; } }