PhotosGetSizes() public method

Returns the available sizes for a photo. The calling user must have permission to view the photo.
public PhotosGetSizes ( string photoId ) : Sizes
photoId string The id of the photo to fetch size information for.
return Sizes
Flickr Class Documentation
Exemplo n.º 1
0
        public static string GetWallpaper(string theme, int minW, int minH, string dlFolder, out string flickrPage, List<string> bannedWalls, Action<string> banWallpaper)
        {
            flickrPage = "";

            theme = theme.Replace("Twilight", "Sunset"); //because flickr usually returns nothing when the tag combination contains "Twilight"

            try
            {
                Flickr flickr = new Flickr("928a5bfb36cc1ea3160c6d236c2c76d4");

                //search flickr
                PhotoSearchOptions opts = new PhotoSearchOptions();

                opts.Tags = theme.Replace(" - ", ",");
                opts.TagMode = TagMode.AllTags;
                opts.SortOrder = PhotoSearchSortOrder.InterestingnessDescending;
                opts.Licenses.Add(LicenseType.AttributionCC);
                opts.Licenses.Add(LicenseType.AttributionNoDerivativesCC);
                opts.Licenses.Add(LicenseType.AttributionShareAlikeCC);
                opts.Licenses.Add(LicenseType.NoKnownCopyrightRestrictions);
                opts.SafeSearch = SafetyLevel.Safe;
                opts.ContentType = ContentTypeSearch.PhotosOnly;
                opts.MediaType = MediaType.Photos;
                opts.Extras = PhotoSearchExtras.OwnerName;

                PhotoCollection flickrResults = flickr.PhotosSearch(opts);

                if (flickrResults.Count == 0) //no suitable wallpapers found
                    return "";

                //choose random images for one that satisfies min. resolution
                SizeCollection sizes;
                Random rand = new Random((int)DateTime.Now.Ticks);
                string url = "";
                int pick = -1, i;

                while (pick == -1)
                {
                    pick = rand.Next(flickrResults.Count);

                    if (bannedWalls.Contains(flickrResults[pick].WebUrl))
                    {
                        //wallpaper banned, pick another
                        flickrResults.RemoveAt(pick);
                        pick = -1;
                    }
                    else
                    {
                        sizes = flickr.PhotosGetSizes(flickrResults[pick].PhotoId);

                        for (i = sizes.Count - 1; i >= 0; i--)
                            if (sizes[i].Width < minW || sizes[i].Height < minH)
                                break;

                        i++;
                        if (i == sizes.Count) //image not large enough
                        {
                            banWallpaper(flickrResults[pick].WebUrl); //ban it so future searches can ignore it
                            flickrResults.RemoveAt(pick);

                            pick = -1;
                        }
                        else
                            url = sizes[i].Source;
                    }

                    if (flickrResults.Count == 0) //no suitable wallpapers found
                        return "";
                }

                //get valid filename from title
                string filename = flickrResults[pick].Title;
                foreach (char c in System.IO.Path.GetInvalidFileNameChars())
                    filename = filename.Replace(c, '_');

                filename += url.Substring(url.LastIndexOf('.')); //append file extension from url

                //dl image
                using (WebClient webClient = new WebClient())
                {
                    webClient.DownloadFile(url, dlFolder + filename);
                }

                flickrPage = flickrResults[pick].WebUrl;
                return dlFolder + filename;
            }
            catch (Exception e)
            {
                return "";
            }
        }