internal WebImage Save(HttpContextBase context, Action <string, byte[]> saveAction, string filePath, string imageFormat, bool forceWellKnownExtension)
{
filePath = filePath ?? FileName;
if (String.IsNullOrEmpty(filePath))
{
throw new ArgumentNullException("filePath", CommonResources.Argument_Cannot_Be_Null_Or_Empty);
}
// GetBytes takes care of executing pending transformations.
// todo: this could be made more efficient by avoiding cloning array
// when format is same
byte[] content = GetBytes(imageFormat);
if (forceWellKnownExtension)
{
ImageFormat saveImageFormat;
ImageFormat requestedImageFormat = String.IsNullOrEmpty(imageFormat) ? _initialFormat : GetImageFormat(imageFormat);
var extension = Path.GetExtension(filePath).TrimStart('.');
// TryFromStringToImageFormat accepts mime types and image names. For images supported by System.Drawing.Imaging, the image name maps to the extension.
// Replace the extension with the current format in the following two events:
// * The extension format cannot be converted to a known format
// * The format does not match.
if (!ConversionUtil.TryFromStringToImageFormat(extension, out saveImageFormat) || !saveImageFormat.Equals(requestedImageFormat))
{
extension = requestedImageFormat.ToString().ToLowerInvariant();
filePath = filePath + "." + extension;
}
}
saveAction(VirtualPathUtil.MapPath(context, filePath), content);
// Update the FileName since it may have changed whilst saving.
FileName = filePath;
return(this);
}
internal Chart(HttpContextBase httpContext, VirtualPathProvider virtualPathProvider, int width, int height,
string theme = null, string themePath = null)
{
Debug.Assert(httpContext != null);
if (width < 0)
{
throw new ArgumentOutOfRangeException("width", String.Format(CultureInfo.CurrentCulture,
CommonResources.Argument_Must_Be_GreaterThanOrEqualTo, 0));
}
if (height < 0)
{
throw new ArgumentOutOfRangeException("height", String.Format(CultureInfo.CurrentCulture,
CommonResources.Argument_Must_Be_GreaterThanOrEqualTo, 0));
}
_httpContext = httpContext;
_virtualPathProvider = virtualPathProvider;
_width = width;
_height = height;
_theme = theme;
// path must be app-relative in case chart is rendered from handler in different directory
if (!String.IsNullOrEmpty(themePath))
{
_themePath = VirtualPathUtil.ResolvePath(TemplateStack.GetCurrentTemplate(httpContext), httpContext, themePath);
if (!_virtualPathProvider.FileExists(_themePath))
{
throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, HelpersResources.Chart_ThemeFileNotFound, _themePath), "themePath");
}
}
}
internal WebImage(HttpContextBase httpContext, Func <string, byte[]> readAction, string filePath)
{
if (String.IsNullOrEmpty(filePath))
{
throw new ArgumentException(CommonResources.Argument_Cannot_Be_Null_Or_Empty, "filePath");
}
_fileName = filePath;
_content = readAction(VirtualPathUtil.MapPath(httpContext, filePath));
_initialFormat = ValidateImageContent(_content, "filePath");
_currentFormat = _initialFormat;
}
/// <summary>
/// Saves the chart to the specified template file.
/// </summary>
/// <param name="path">XML template file path.</param>
internal Chart SaveXml(HttpContextBase httpContext, string path)
{
if (String.IsNullOrEmpty(path))
{
throw new ArgumentException(CommonResources.Argument_Cannot_Be_Null_Or_Empty, "path");
}
ExecuteChartAction(c => {
c.SaveXml(VirtualPathUtil.MapPath(httpContext, path));
});
return(this);
}
internal Chart Save(HttpContextBase httpContext, string path, string format)
{
if (String.IsNullOrEmpty(path))
{
throw new ArgumentException(CommonResources.Argument_Cannot_Be_Null_Or_Empty, "path");
}
var imageFormat = ConvertStringToChartImageFormat(format);
_path = VirtualPathUtil.MapPath(httpContext, path);
ExecuteChartAction(c => {
c.RenderType = DV.RenderType.ImageTag;
c.SaveImage(FileName, imageFormat);
});
return(this);
}
internal Chart(HttpContextBase httpContext, Func <VirtualPathProvider> virtualPathProviderFunc,
int width, int height, string theme = null, string themePath = null)
{
Contract.Assert(httpContext != null);
Contract.Assert(virtualPathProviderFunc != null);
// HostingEnvironment.VirtualPathProvider never null in running host but may change at any time.
Contract.Assert(virtualPathProviderFunc() != null);
if (width < 0)
{
throw new ArgumentOutOfRangeException("width", String.Format(
CultureInfo.CurrentCulture,
CommonResources.Argument_Must_Be_GreaterThanOrEqualTo,
0));
}
if (height < 0)
{
throw new ArgumentOutOfRangeException("height", String.Format(
CultureInfo.CurrentCulture,
CommonResources.Argument_Must_Be_GreaterThanOrEqualTo,
0));
}
_httpContext = httpContext;
_virtualPathProviderFunc = virtualPathProviderFunc;
_width = width;
_height = height;
_theme = theme;
// path must be app-relative in case chart is rendered from handler in different directory
if (!String.IsNullOrEmpty(themePath))
{
_themePath = VirtualPathUtil.ResolvePath(TemplateStack.GetCurrentTemplate(httpContext), httpContext, themePath);
if (!virtualPathProviderFunc().FileExists(_themePath))
{
throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, HelpersResources.Chart_ThemeFileNotFound, _themePath), "themePath");
}
}
}
