CircleIndicator.java 文件源码

private void drawCircle(Canvas canvas) {
    Paint textPaint = new Paint();
    textPaint.setColor(this.mCircleWhite);
    textPaint.setAntiAlias(true);
    textPaint.setTextSize(getResources().getDimension(R.dimen.out_indicator_size));
    float textHeight = (float) ViewUtils.getTextHeight(textPaint);
    float perAngle = 270.0f / (this.mEndIndicator - this.mStartIndicator);
    int radius = (int) (((float) getViewRadius()) - (2.6f * ((float) this.mDividerWidth)));
    FontMetricsInt fmi = textPaint.getFontMetricsInt();
    float textRadius = (float) (radius - (Math.abs(fmi.bottom + fmi.top) / 2));
    RectF oval = new RectF((float) (getCenterX() - radius), (float) (getCenterY() - radius),
            (float) (getCenterX() + radius), (float) (getCenterY() + radius));
    Path path = new Path();
    path.addCircle((float) getCenterX(), (float) getCenterY(), textRadius, Direction.CW);
    Paint circlePaint = new Paint();
    circlePaint.setAntiAlias(true);
    circlePaint.setStrokeWidth(16.0f + textHeight);
    circlePaint.setStyle(Style.STROKE);
    if (this.mDividerIndicator.size() == 0) {
        circlePaint.setStrokeCap(Cap.ROUND);
        circlePaint.setColor(this.mCircleGray);
        canvas.drawArc(oval, 135.0f, 270.0f, false, circlePaint);
        return;
    }
    circlePaint.setStrokeCap(Cap.ROUND);
    drawCircleContent(canvas, (IndicatorItem) this.mDividerIndicator.get(0), oval, perAngle,
            textRadius, path, textPaint, circlePaint);
    Canvas canvas2 = canvas;
    drawCircleContent(canvas2, (IndicatorItem) this.mDividerIndicator.get(this
            .mDividerIndicator.size() - 1), oval, perAngle, textRadius, path, textPaint,
            circlePaint);
    circlePaint.setStrokeCap(Cap.BUTT);
    for (int i = 1; i < this.mDividerIndicator.size() - 1; i++) {
        drawCircleContent(canvas, (IndicatorItem) this.mDividerIndicator.get(i), oval,
                perAngle, textRadius, path, textPaint, circlePaint);
    }
}