public static string GetImageBase64(string imageName, PatchSvgSettings patchSvgSettings = null)
{
if (imageName != null)
{
string[] path = imageName.Split('\\', '/');
if (path.Length > 1 && path[0].ToLowerInvariant() == "devextreme")
{
return(path[1].ToLowerInvariant());
}
ImageInfo imageInfo = ImageLoader.Instance.GetLargeImageInfo(imageName);
if (imageInfo.IsEmpty)
{
imageInfo = ImageLoader.Instance.GetImageInfo(imageName);
}
if (imageInfo.IsSvgImage && imageInfo.ImageBytes != null)
{
byte[] svg = imageInfo.ImageBytes;
if (patchSvgSettings != null && imageInfo.IsDevExpressSvgImage)
{
svg = PatchSvg(svg, patchSvgSettings);
}
return("data:image/svg+xml;base64," + Convert.ToBase64String(svg));
}
if (!imageInfo.IsSvgImage && imageInfo.Image != null)
{
return(GetImageBase64FromPng(imageInfo.Image));
}
return(imageName.ToLowerInvariant());
}
return(null);
}
private static byte[] PatchSvg(byte[] svgBytes, PatchSvgSettings patchSvgSettings)
{
using (MemoryStream memoryStream = new MemoryStream(svgBytes)) {
XElement svg = XElement.Load(memoryStream);
if (patchSvgSettings.ImageSize > 0)
{
int newImageSize = patchSvgSettings.ImageSize * 2;
XAttribute viewBoxAttribute = svg.Attribute("viewBox");
if (viewBoxAttribute != null && viewBoxAttribute.Value == "0 0 32 32")
{
string newViewBoxValue = string.Format("0 0 {0} {0}", newImageSize);
viewBoxAttribute.SetValue(newViewBoxValue);
}
XAttribute styleAttribute = svg.Attribute("style");
string oldBackgroudValue = "enable-background:new 0 0 32 32;";
if (styleAttribute != null && styleAttribute.Value.Contains(oldBackgroudValue))
{
string newBackgroudValue = string.Format("enable-background:new 0 0 {0} {0};", newImageSize);
styleAttribute.SetValue(styleAttribute.Value.Replace(oldBackgroudValue, newBackgroudValue));
}
}
if (!String.IsNullOrEmpty(patchSvgSettings.MainColor))
{
XNamespace svgNamespace = "http://www.w3.org/2000/svg";
XElement styleElement = svg.Element(svgNamespace + "style");
//styleElement.FirstNode.ReplaceWith(".Black{fill:" + patchSvgSettings.MainColor + ";}");
string styleValue = ((XText)styleElement.FirstNode).Value;
string patchedStyleValue = Regex.Replace(styleValue, @"#[0-9A-F]+", patchSvgSettings.MainColor);
patchedStyleValue = Regex.Replace(patchedStyleValue, @"opacity:[0-9](\.[0-9]+)?;", "opacity:1;");
styleElement.FirstNode.ReplaceWith(patchedStyleValue);
}
string resultString = svg.ToString();
return(Encoding.ASCII.GetBytes(resultString));
}
}
