Exemplos de check_imagelist_length em C++ (Cpp)

Exemplo n.º 1

Arquivo: rmilist.c Projeto: ABaumgaertner/rmagick

/**
 * Convert an array of Image *s to an ImageMagick scene sequence (i.e. a
 * doubly-linked list of Images).
 *
 * No Ruby usage (internal function)
 *
 * @param imagelist the imagelist
 * @return a pointer to the head of the scene sequence list
 * @see rm_imagelist_from_images
 */
static Image *
images_from_imagelist(VALUE imagelist)
{
    long x, len;
    Image *head = NULL;
    VALUE images, t;

    len = check_imagelist_length(imagelist);

    images = rb_iv_get(imagelist, "@images");
    for (x = 0; x < len; x++)
    {
        Image *image;

        t = rb_ary_entry(images, x);
        image = rm_check_destroyed(t);
        // avoid a loop in this linked imagelist, issue #202
        if (head == image || GetPreviousImageInList(image) != NULL)
        {
            image = rm_clone_image(image);
        }
        AppendImageToList(&head, image);
    }

    RB_GC_GUARD(images);
    RB_GC_GUARD(t);

    return head;
}

Exemplo n.º 2

Arquivo: rmilist.c Projeto: Des/your_app_name

/*
    Extern:     images_from_imagelist
    Purpose:    Convert an array of Image *s to an ImageMagick scene
                sequence (i.e. a doubly-linked list of Images)
    Returns:    a pointer to the head of the scene sequence list
*/
static Image *
images_from_imagelist(VALUE imagelist)
{
    long x, len;
    Image *head = NULL;
    volatile VALUE images, t;

    len = check_imagelist_length(imagelist);

    images = rb_iv_get(imagelist, "@images");
    for (x = 0; x < len; x++)
    {
        Image *image;

        t = rb_ary_entry(images, x);
        image = rm_check_destroyed(t);
        AppendImageToList(&head, image);
    }

    return head;
}