GaugeSpeed.java 文件源码

public Paint getDefaultOuterRimPaint() {
    // Use a 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);

    // Use a Bitmap shader for the metallic style
    final Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.light_alu);
    final BitmapShader aluminiumTile = new BitmapShader(bitmap, TileMode.REPEAT, TileMode.REPEAT);
    final Matrix matrix = new Matrix();
    matrix.setScale(1.0f / bitmap.getWidth(), 1.0f / bitmap.getHeight());
    aluminiumTile.setLocalMatrix(matrix);

    final Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
    paint.setShader(new ComposeShader(verticalGradient, aluminiumTile, PorterDuff.Mode.MULTIPLY));
    paint.setFilterBitmap(true);
    return paint;
}