HighlightView.java 文件源码

protected void draw(Canvas canvas) {
    canvas.save();
    Path path = new Path();
    outlinePaint.setStrokeWidth(outlineWidth);
    if (!hasFocus()) {
        outlinePaint.setColor(Color.BLACK);
        canvas.drawRect(drawRect, outlinePaint);
    } else {
        Rect viewDrawingRect = new Rect();
        viewContext.getDrawingRect(viewDrawingRect);

        path.addRect(new RectF(drawRect), Path.Direction.CW);
        outlinePaint.setColor(highlightColor);

        if (isClipPathSupported(canvas)) {
            canvas.clipPath(path, Region.Op.DIFFERENCE);
            canvas.drawRect(viewDrawingRect, outsidePaint);
        } else {
            drawOutsideFallback(canvas);
        }

        canvas.restore();
        canvas.drawPath(path, outlinePaint);

        if (showThirds) {
            drawThirds(canvas);
        }

        if (showCircle) {
            drawCircle(canvas);
        }

        if (handleMode == HandleMode.Always ||
                (handleMode == HandleMode.Changing && modifyMode == ModifyMode.Grow)) {
            drawHandles(canvas);
        }
    }
}