C++ (Cpp) evas_common_convert_argb_premul Beispiele

Beispiel #1

EAPI void
evas_common_image_premul(Image_Entry *ie)
{
   DATA32  nas = 0;

   if (!ie) return ;
   if (!evas_cache_image_pixels(ie)) return ;
   if (!ie->flags.alpha) return;

   nas = evas_common_convert_argb_premul(evas_cache_image_pixels(ie), ie->w * ie->h);
   if ((ALPHA_SPARSE_INV_FRACTION * nas) >= (ie->w * ie->h))
     ie->flags.alpha_sparse = 1;
}

Beispiel #2

Datei: evas_object_gradient.c Projekt: OpenInkpot-archive/iplinux-evas

/**
 * Pre-multiplies data by an alpha factor.
 *
 * @param data The data value.
 * @param len  The lenght value.
 *
 * This function pre-multiplies a given data by an alpha
 * factor. Alpha factor is used to define transparency.
 *
 * @ingroup Evas_Utils
 **/
EAPI void
evas_data_argb_premul(unsigned int *data, unsigned int len)
{
   if (!data || (len < 1)) return;
   evas_common_convert_argb_premul(data, len);
}