const char* const IMAGE_DESIRED_HEIGHT("desiredHeight");
const char* const ALPHA_MASK_URL("alphaMaskUrl");
const char* const REDRAW_IN_SCALING_DOWN_NAME("redrawInScalingDown");
const char* const IMAGE_DESIRED_HEIGHT("desiredHeight");
const char* const ALPHA_MASK_URL("alphaMaskUrl");
const char* const REDRAW_IN_SCALING_DOWN_NAME("redrawInScalingDown");