private void RecoverOriginState()
{
GraphicsSettingData.ApplyPersonalContrastDelta();
GraphicsSettingData.CopyPersonalContrastDelta(ref this._contrastDelta);
int showValue = ((int)((((float)(this._contrastShowMaxValue - this._contrastShowMinValue)) / 2f) * (this._contrastDelta + 1f))) + this._contrastShowMinValue;
this._contrastSlider.value = showValue;
this.ShowContrast(showValue);
}