// Helper methods
private static string CompileUrl(ThumbnailSettings settings)
{
var nvc = settings.GetUrlParameters();
var parameters = string.Join("&", nvc.AllKeys.Select(a => a + "=" + HttpUtility.UrlEncode(nvc[a])));
return($"/{Constants.UrlFragment}?{parameters}");
}
public virtual Image LoadThumbnailImage(ThumbnailSettings settings)
{
string fileName = settings.GetFileName(".png");
if (!CachedImageExists(fileName))
{
var stream = GenerateImage(settings);
string savePath = GetFileFullPath(fileName);
using (var fileStream = File.Create(savePath))
{
stream.Seek(0, SeekOrigin.Begin);
stream.CopyTo(fileStream);
stream.Dispose();
stream.Close();
}
}
Image img;
using (var bmpTemp = new Bitmap(GetFileFullPath(fileName)))
{
img = new Bitmap(bmpTemp);
}
return(img);
}
public static ThumbnailSettings GetSettings(string backgroundColor, string foregroundColor, int fontSize)
{
var settings = new ThumbnailSettings();
if (!string.IsNullOrEmpty(backgroundColor))
{
settings.BackgroundColor = backgroundColor;
}
else
{
var cfg = ConfigurationManager.AppSettings[Constants.AppSettings.BackgroundColor] ?? string.Empty;
settings.BackgroundColor = string.IsNullOrEmpty(cfg) ? Constants.DefaultBackgroundColor : cfg;
}
if (!string.IsNullOrEmpty(foregroundColor))
{
settings.ForegroundColor = foregroundColor;
}
else
{
var cfg = ConfigurationManager.AppSettings[Constants.AppSettings.ForegroundColor] ?? string.Empty;
settings.ForegroundColor = string.IsNullOrEmpty(cfg) ? Constants.DefaultForegroundColor : cfg;
}
if (fontSize < 0)
{
int.TryParse(ConfigurationManager.AppSettings[Constants.AppSettings.FontSize], out fontSize);
}
settings.FontSize = fontSize > 0 ? fontSize : Constants.DefaultFontSize;
settings.Width = Constants.DefaultWidth;
settings.Height = Constants.DefaultHeight;
return(settings);
}
public virtual Image LoadThumbnailImage(ThumbnailSettings settings)
{
var fileName = settings.GetFileName(".png");
var cachePath = GetFileFullPath(fileName);
if (File.Exists(cachePath))
{
using (var bmpTemp = new Bitmap(cachePath))
{
return(new Bitmap(bmpTemp));
}
}
else
{
using (var fileStream = File.Create(cachePath))
using (var stream = GenerateImage(settings))
using (var bmpTemp = new Bitmap(stream))
{
stream.Seek(0, SeekOrigin.Begin);
stream.CopyTo(fileStream);
stream.Dispose();
stream.Close();
return(new Bitmap(bmpTemp));
}
}
}
private static Settings CreateSettings()
{
SettingConfigurationSection section = (SettingConfigurationSection)ConfigurationManager.GetSection(SettingConfigurationSection.SectionName);
ApiSettings api = new ApiSettings(section.Api.Allowed, section.Api.DailyLimit);
ThumbnailSettings thumbnail = new ThumbnailSettings(section.Thumbnail.ApiKey, section.Thumbnail.Endpoint);
GoogleSafeBrowsingSettings google = new GoogleSafeBrowsingSettings(section.Google.ApiKey, section.Google.Endpoint, HttpContext.Current.Server.MapPath(section.Google.PhishingFile), HttpContext.Current.Server.MapPath(section.Google.MalwareFile));
TwitterSettings twitter = null;
if (section.Twitter != null)
{
twitter = new TwitterSettings(section.Twitter.UserName, section.Twitter.Password, section.Twitter.Endpoint, section.Twitter.MessageTemplate, section.Twitter.MaximumMessageLength, section.Twitter.Recipients.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries));
}
IList <User> defaultUsers = new List <User>();
foreach (DefaultUserConfigurationElement configuration in section.DefaultUsers)
{
defaultUsers.Add(new User {
Name = configuration.Name, Email = configuration.Email, Role = configuration.Role
});
}
Settings settings = new Settings(section.RedirectPermanently, section.UrlPerPage, section.BaseType, api, thumbnail, google, twitter, defaultUsers);
return(settings);
}
public ThumbnailSettings GetThumbnailSettings()
{
if (_thumbnailSettings == null)
{
_thumbnailSettings = this.GetSettings <ThumbnailSettings>("ThumbnailSettings") ?? ThumbnailSettings.Default;
}
return(_thumbnailSettings);
}
public ActionResult GenerateThumbnail(ThumbnailSettings settings)
{
if (!CheckValidFormatHtmlColor(settings.BackgroundColor) || !CheckValidFormatHtmlColor(settings.ForegroundColor))
{
throw (new Exception("Unknown foreground or background color"));
}
var image = _thumbnailService.LoadThumbnailImage(settings);
return(new ImageResult()
{
Image = image, ImageFormat = ImageFormat.Png
});
}
protected virtual MemoryStream GenerateImage(ThumbnailSettings settings)
{
PrivateFontCollection fonts;
FontFamily family;
if (settings.UseEmbeddedFont)
{
family = LoadFontFamilyFromEmbeddedResource(settings.EmbeddedFont, out fonts);
}
else
{
family = LoadFontFamilyFromDisk(settings.CustomFontName, out fonts);
}
var cc = new ColorConverter();
var bg = (Color)cc.ConvertFrom(settings.BackgroundColor);
var fg = (Color)cc.ConvertFrom(settings.ForegroundColor);
var stream = new MemoryStream();
using (var font = new Font(family, settings.FontSize))
using (var bitmap = new Bitmap(settings.Width, settings.Height, PixelFormat.Format24bppRgb))
using (var g = Graphics.FromImage(bitmap))
{
g.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBilinear;
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.Clear(bg);
StringFormat format1 = new StringFormat(StringFormatFlags.NoClip);
format1.LineAlignment = StringAlignment.Center;
format1.Alignment = StringAlignment.Center;
Rectangle displayRectangle = new Rectangle(new Point(0, 0), new Size(settings.Width, settings.Height));
string chr = char.ConvertFromUtf32(settings.Character);
g.DrawString(chr, font, new SolidBrush(fg), displayRectangle, format1);
bitmap.Save(stream, ImageFormat.Png);
family.Dispose();
fonts.Dispose();
}
return(stream);
}
public ThumbnailIconControllerFixture()
{
var partialDirectory = $"[appDataPath]\\thumb_cache\\{Guid.NewGuid()}\\";
ConfigurationManager.AppSettings["FontThumbnail.CachePath"] = partialDirectory;
_temporaryDirectory = VirtualPathUtilityEx.RebasePhysicalPath(partialDirectory);
Directory.CreateDirectory(_temporaryDirectory);
var service = new FontThumbnailService();
Controller = new ThumbnailIconController(service);
Settings = new ThumbnailSettings
{
FontSize = Constants.DefaultFontSize,
BackgroundColor = Constants.DefaultBackgroundColor,
ForegroundColor = Constants.DefaultForegroundColor,
Height = Constants.DefaultHeight,
Width = Constants.DefaultWidth
};
}
internal virtual MemoryStream GenerateImage(ThumbnailSettings settings)
{
FontFamily family;
if (settings.UseEmbeddedFont)
{
family = LoadFontFamilyFromEmbeddedResource(settings.EmbeddedFont);
}
else
{
family = LoadFontFamilyFromDisk(settings.CustomFontName);
}
var cc = new ColorConverter();
var bg = (Color)cc.ConvertFrom(settings.BackgroundColor);
var fg = (Color)cc.ConvertFrom(settings.ForegroundColor);
var stream = new MemoryStream();
using (var font = new Font(family, settings.FontSize))
using (var bitmap = new Bitmap(settings.Width, settings.Height, PixelFormat.Format24bppRgb))
using (var g = Graphics.FromImage(bitmap))
{
g.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;
g.InterpolationMode = InterpolationMode.HighQualityBilinear;
g.PixelOffsetMode = PixelOffsetMode.HighQuality;
g.SmoothingMode = SmoothingMode.HighQuality;
g.Clear(bg);
switch (settings.Rotate)
{
case Rotations.Rotate90:
case Rotations.Rotate180:
case Rotations.Rotate270:
g.TranslateTransform(settings.Width / 2, settings.Height / 2);
g.RotateTransform((int)settings.Rotate);
g.TranslateTransform(-(settings.Width / 2), -(settings.Height / 2));
break;
}
var format1 = new StringFormat(StringFormatFlags.NoClip);
using (var format = new StringFormat(StringFormatFlags.NoClip))
{
format.LineAlignment = StringAlignment.Center;
format.Alignment = StringAlignment.Center;
var displayRectangle = new Rectangle(new Point(0, 0), new Size(settings.Width, settings.Height));
var chr = char.ConvertFromUtf32(settings.Character);
using (var brush = new SolidBrush(fg))
{
g.DrawString(chr, font, brush, displayRectangle, format);
}
}
switch (settings.Rotate)
{
case Rotations.FlipHorizontal:
bitmap.RotateFlip(RotateFlipType.RotateNoneFlipX);
break;
case Rotations.FlipVertical:
bitmap.RotateFlip(RotateFlipType.RotateNoneFlipY);
break;
}
bitmap.Save(stream, ImageFormat.Png);
}
family.Dispose();
return(stream);
}
