GaugeView.java 文件源码

/**
 * Set default inner rim paint
 *
 * @return paint
 *          Paint for inner rim
 */
private Paint getDefaultInnerRimPaint() {
    /** Linear gradient to create the 3D effect */
    final LinearGradient verticalGradient = new LinearGradient(mOuterRimRect.left, mOuterRimRect.top, mOuterRimRect.left,
            mOuterRimRect.bottom, Color.rgb(255, 255, 255), Color.rgb(84, 90, 100), TileMode.REPEAT);

    /** Bitmap for inner rim */
    final Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.darkerwood);
    /** Bitmap shader for the metallic style */
    final BitmapShader innerRimTile = new BitmapShader(bitmap, TileMode.REPEAT, TileMode.REPEAT);
    /** Matrix for inner rim */
    final Matrix matrix = new Matrix();
    matrix.setScale(1.0f / bitmap.getWidth(), 1.0f / bitmap.getHeight());
    innerRimTile.setLocalMatrix(matrix);

    /** Paint for outer rim */
    final Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
    paint.setShader(new ComposeShader(verticalGradient, innerRimTile, PorterDuff.Mode.MULTIPLY));
    paint.setFilterBitmap(true);
    return paint;
}