/// <summary>
/// Clones the given theme.
/// </summary>
/// <param name="sourceId">An Id of the theme to clone.</param>
/// <param name="name">The name for a new theme.</param>
/// <param name="overrides">Theme overrides.</param>
/// <returns>New theme.</returns>
public UserTheme CloneTheme(string sourceId, string name, ThemeMetadata overrides)
{
UserTheme ret = null;
int userId = GetUserId();
string cssText = string.Empty;
string fullPhysicalPath = string.Empty;
string newId = ThemeSource.MakeId(name);
ThemeMetadata.ExCSSStylesheet stylesheet = null;
string fullPhysicalPathDirectoryName = string.Empty;
string fullPath = string.Format("~/App_Data/Themes/{0}/{1}.css", userId, name);
if (userId > 0)
{
stylesheet = new ThemeMetadata.ExCSSStylesheet(sourceId, ThemeMetadata.ResolveThemeContents(sourceId));
if (overrides != null)
{
stylesheet.FontFamily = overrides.FontFamily;
stylesheet.FontColor = overrides.FontColor;
stylesheet.AccentColor1 = overrides.AccentColor1;
stylesheet.AccentColor2 = overrides.AccentColor2;
stylesheet.AccentColor3 = overrides.AccentColor3;
stylesheet.AccentColor4 = overrides.AccentColor4;
stylesheet.BackgroundColor = overrides.BackgroundColor;
stylesheet.BackgroundImage = overrides.BackgroundImage ?? string.Empty;
stylesheet.Logo = overrides.Logo;
}
cssText = stylesheet.ToString();
cssText = Regex.Replace(cssText, string.Concat("\\.theme-", sourceId), string.Concat(".theme-", newId), RegexOptions.IgnoreCase);
fullPhysicalPath = HttpContext.Current.Server.MapPath(fullPath);
fullPhysicalPathDirectoryName = System.IO.Path.GetDirectoryName(fullPhysicalPath);
if (!System.IO.Directory.Exists(fullPhysicalPathDirectoryName))
{
System.IO.Directory.CreateDirectory(fullPhysicalPathDirectoryName);
}
System.IO.File.WriteAllText(fullPhysicalPath, cssText, System.Text.Encoding.UTF8);
ret = ThemeSource.CreateThemeInstance <UserTheme>(fullPhysicalPath, t => t.PhysicalPath = fullPhysicalPath, true);
}
return(ret);
}
/// <summary>
/// Tries to re-map theme background image for a iven presentation.
/// </summary>
/// <param name="p">Presentation.</param>
/// <returns>Presentation.</returns>
public static Presentation TryRemapThemeBackgroundImage(Presentation p)
{
ThemeMetadata metadata = null;
if (p != null && string.IsNullOrWhiteSpace(p.BackgroundImage))
{
metadata = ThemeMetadata.ParseMetadata(p.Theme);
// We have a nice rendering for background image on the front-end. We don't want to duplicate this functionality but we'd rather put theme BG image as user-specified one.
if (metadata != null)
{
p.BackgroundImage = metadata.BackgroundImage;
}
}
return(p);
}
/// <summary>
/// Parses metadata from a given CSS text.
/// </summary>
/// <param name="id">Theme Id.</param>
/// <param name="css">Theme CSS.</param>
/// <returns>Theme parsed metadata.</returns>
public static ThemeMetadata ParseMetadata(string id, string css)
{
ExCSSStylesheet stylesheet = null;
ThemeMetadata ret = new ThemeMetadata();
if (!string.IsNullOrEmpty(css) && !string.IsNullOrEmpty(id))
{
stylesheet = new ExCSSStylesheet(id, css);
ret.FontFamily = stylesheet.FontFamily;
ret.FontColor = stylesheet.FontColor;
ret.AccentColor1 = stylesheet.AccentColor1;
ret.AccentColor2 = stylesheet.AccentColor2;
ret.AccentColor3 = stylesheet.AccentColor3;
ret.AccentColor4 = stylesheet.AccentColor4;
ret.BackgroundColor = stylesheet.BackgroundColor;
ret.BackgroundImage = stylesheet.BackgroundImage;
ret.Logo = stylesheet.Logo;
}
return(ret);
}