ATableViewCellDrawable.java 文件源码

@Override
protected void onDraw(Shape shape, Canvas canvas, Paint paint) {
    canvas.save();
    Rect bounds = canvas.getClipBounds();

    // bottom etched line.
    if (mBottomEtchedPaint != null) shape.draw(canvas, mBottomEtchedPaint);
    canvas.restore();
    canvas.save();

    // separator.
    canvas.concat(getSeparatorPaintMatrix(bounds));
    shape.draw(canvas, mSeparatorPaint);
    canvas.restore();
    canvas.save();

    // top etched line.
    canvas.concat(getTopEtchedPaintMatrix(bounds));
    if (mTopEtchedPaint != null) shape.draw(canvas, mTopEtchedPaint);
    canvas.restore();
    canvas.save();

    // background.
    canvas.concat(getBackgroundPaintMatrix(bounds));
    shape.draw(canvas, mBackgroundPaint);
    canvas.restore();
    canvas.save();

    // selected.
    canvas.concat(getSelectedPaintMatrix(bounds));
    if (mSelectedPaint != null) {

        // we'll set the selected color on onDraw event since we don't know drawable height up to here.
        Shader shader = new LinearGradient(0, 0, 0, mRowHeight, mStartColor, mEndColor, Shader.TileMode.MIRROR);
        mSelectedPaint.setShader(shader);

        shape.draw(canvas, mSelectedPaint);
    }
}