private static ImageSetParameters GetParameters(HttpRequest request, out string imageName, out string namespaceQualifiedTypeName)
{
ImageSetParameters retVal = new ImageSetParameters();
imageName = string.Empty;
namespaceQualifiedTypeName = string.Empty;
foreach (string queryKey in request.QueryString.AllKeys)
{
//TODO: Enumify magic strings
if (queryKey.Equals("in")) // Image Name
{
imageName = request.QueryString[queryKey];
}
else if (queryKey.Equals("t"))
{
namespaceQualifiedTypeName = request.QueryString[queryKey];
}
else
{
retVal[queryKey] = HttpUtility.UrlDecode(request.QueryString[queryKey]);
}
}
return(retVal);
}
public static IImageSet GetImageSet(string namespaceQualifiedType, ImageSetParameters parameters)
{
Type type = Type.GetType(namespaceQualifiedType);
if (type == null)
{
throw ExceptionHelper.CreateException <PixelServerException>("The type {0} was not found.", namespaceQualifiedType);
}
if (type.GetInterface("IImageSetProvider") == null)
{
throw ExceptionHelper.CreateException <PixelServerException>("The type {0} doesn't implement interface IImageSetProvider.", namespaceQualifiedType);
}
ConstructorInfo ctor = type.GetConstructor(Type.EmptyTypes);
if (ctor == null)
{
throw ExceptionHelper.CreateException <PixelServerException>("The type {0} doesn't have a parameterless constructor defined.", namespaceQualifiedType);
}
object invokeTarget = ctor.Invoke(null);
MethodInfo method = type.GetMethod("GetImageSet");
IImageSet retVal = (IImageSet)method.Invoke(invokeTarget, new object[] { parameters });
return(retVal);
}
public IImageSet GetImageSet(ImageSetParameters parameters)
{
string classTypeString = parameters["classtype"];
if (string.IsNullOrEmpty(classTypeString))
throw ExceptionHelper.CreateException<PixelServerException>("No classtype was specified.");
string methodName = "Get" + StringExtensions.CamelCase(classTypeString) + this.GetType().Name;
MethodInfo method = this.GetType().GetMethod(methodName);
return (IImageSet)method.Invoke(this, new object[] { parameters });
}
public static bool ProcessPixelRequest(HttpContext context)
{
HttpRequest request = context.Request;
HttpResponse response = context.Response;
if (!IsPixelRequest(request))
{
return(false);
}
ImageSetParameters parameters = new ImageSetParameters();
string imageName = string.Empty;
string nameSpaceQualifiedTypeName = string.Empty;
parameters = GetParameters(request, out imageName, out nameSpaceQualifiedTypeName);
if (string.IsNullOrEmpty(nameSpaceQualifiedTypeName))
{
return(ProcessResourceRequest(imageName, parameters));
}
try
{
//object retVal = method.Invoke(null, (object[])parameters);
IImageSet retVal = GetImageSet(nameSpaceQualifiedTypeName, parameters);
if (retVal == null)
{
response.Clear();
response.StatusCode = 404;
response.Status = "Image not found";
context.ApplicationInstance.CompleteRequest();
return(true);
}
IImageSet imageSet = (IImageSet)retVal;
MemoryStream ms = new MemoryStream();
// saving to a memory stream isn't necessary for jpeg but I'm leaving this in just in case I change the format to png later
imageSet[imageName].Save(ms, ImageFormat.Png);
response.Clear();
//TODO: Parameterize the content type/ImageFormat
response.ContentType = "image/Png"; // this must match the ImageFormat in the Save call above
ms.WriteTo(response.OutputStream);
imageSet.Dispose();
context.ApplicationInstance.CompleteRequest();
}
catch (Exception ex)
{
LogManager.CurrentLog.AddEntry("An error occurred processing PixelServer request:\r\n Parameters: {0}", ex, new string[] { parameters.ToString() });
}
return(true);
}
private static bool ProcessResourceRequest(string imageName, ImageSetParameters parameters)
{
HttpContext context = HttpContext.Current;
HttpRequest request = context.Request;
HttpResponse response = context.Response;
Resources.LoadResources(typeof(PixelServer).Assembly);
//format valid values png, gif, jpg
WebFormats webFormat = string.IsNullOrEmpty(parameters["f"]) ? WebFormats.gif : (WebFormats)Enum.Parse(typeof(WebFormats), parameters["f"]);
ImageFormat imageFormat = ImageFormat.Gif;
switch (webFormat)
{
case WebFormats.Invalid:
break;
case WebFormats.gif:
break;
case WebFormats.jpg:
imageFormat = ImageFormat.Jpeg;
break;
case WebFormats.png:
imageFormat = ImageFormat.Png;
break;
}
if (Resources.Images.ContainsKey(EmbeddedPath + imageName))
{
Bitmap image = Resources.Images[EmbeddedPath + imageName];
MemoryStream ms = new MemoryStream();
image.Save(ms, imageFormat);
response.Clear();
response.ContentType = "image/" + webFormat.ToString();
if (webFormat == WebFormats.jpg)
{
image.Save(response.OutputStream, imageFormat);
}
else
{
ms.WriteTo(response.OutputStream);
}
context.ApplicationInstance.CompleteRequest();
return(true);
}
return(false);
}
public IImageSet GetImageSet(ImageSetParameters parameters)
{
string classTypeString = parameters["classtype"];
if (string.IsNullOrEmpty(classTypeString))
{
throw ExceptionHelper.CreateException <PixelServerException>("No classtype was specified.");
}
string methodName = "Get" + StringExtensions.CamelCase(classTypeString) + this.GetType().Name;
MethodInfo method = this.GetType().GetMethod(methodName);
return((IImageSet)method.Invoke(this, new object[] { parameters }));
}
//string lineWidth, string radius, string horizontalMargin, string verticalMargin, string htmlLineColor, string htmlBackgroundColor, string htmlFillColor)
public static IImageSet GetTopTab(ImageSetParameters parameters)
{
int intLineWidth;
int intRadius;
int intHorizontalMargin;
int intVerticalMargin;
int intTabHeight;
string lineWidth = parameters["linewidth"];
string lineColor = parameters["linecolor"];
string radius = parameters["radius"];
string horizontalMargin = parameters["hmargin"];
string verticalMargin = parameters["vmargin"];
string htmlBackgroundColor = parameters["backgroundcolor"];
string htmlFillColor = parameters["fillcolor"];
string tabHeight = parameters["tabh"];
if (int.TryParse(lineWidth, out intLineWidth))
{
if (int.TryParse(radius, out intRadius))
{
if (int.TryParse(horizontalMargin, out intHorizontalMargin))
{
if (int.TryParse(verticalMargin, out intVerticalMargin))
{
if (int.TryParse(tabHeight, out intTabHeight))
{
Tab tabs = new Tab(new QuarterCircles(intLineWidth, intRadius,
new SolidBrush(ColorTranslator.FromHtml(htmlBackgroundColor)),
new SolidBrush(ColorTranslator.FromHtml(htmlFillColor)),
intHorizontalMargin,
intVerticalMargin), intTabHeight, lineColor);
return (IImageSet)tabs.GetTop();
}
}
}
}
}
return null;
}
//string lineWidth, string radius, string horizontalMargin, string verticalMargin, string htmlLineColor, string htmlBackgroundColor, string htmlFillColor)
public static IImageSet GetTopTab(ImageSetParameters parameters)
{
int intLineWidth;
int intRadius;
int intHorizontalMargin;
int intVerticalMargin;
int intTabHeight;
string lineWidth = parameters["linewidth"];
string lineColor = parameters["linecolor"];
string radius = parameters["radius"];
string horizontalMargin = parameters["hmargin"];
string verticalMargin = parameters["vmargin"];
string htmlBackgroundColor = parameters["backgroundcolor"];
string htmlFillColor = parameters["fillcolor"];
string tabHeight = parameters["tabh"];
if (int.TryParse(lineWidth, out intLineWidth))
{
if (int.TryParse(radius, out intRadius))
{
if (int.TryParse(horizontalMargin, out intHorizontalMargin))
{
if (int.TryParse(verticalMargin, out intVerticalMargin))
{
if (int.TryParse(tabHeight, out intTabHeight))
{
Tab tabs = new Tab(new QuarterCircles(intLineWidth, intRadius,
new SolidBrush(ColorTranslator.FromHtml(htmlBackgroundColor)),
new SolidBrush(ColorTranslator.FromHtml(htmlFillColor)),
intHorizontalMargin,
intVerticalMargin), intTabHeight, lineColor);
return((IImageSet)tabs.GetTop());
}
}
}
}
}
return(null);
}
private static bool ProcessResourceRequest(string imageName, ImageSetParameters parameters)
{
HttpContext context = HttpContext.Current;
HttpRequest request = context.Request;
HttpResponse response = context.Response;
Resources.LoadResources(typeof(PixelServer).Assembly);
//format valid values png, gif, jpg
WebFormats webFormat = string.IsNullOrEmpty(parameters["f"]) ? WebFormats.gif : (WebFormats)Enum.Parse(typeof(WebFormats), parameters["f"]);
ImageFormat imageFormat = ImageFormat.Gif;
switch (webFormat)
{
case WebFormats.Invalid:
break;
case WebFormats.gif:
break;
case WebFormats.jpg:
imageFormat = ImageFormat.Jpeg;
break;
case WebFormats.png:
imageFormat = ImageFormat.Png;
break;
}
if (Resources.Images.ContainsKey(EmbeddedPath + imageName))
{
Bitmap image = Resources.Images[EmbeddedPath + imageName];
MemoryStream ms = new MemoryStream();
image.Save(ms, imageFormat);
response.Clear();
response.ContentType = "image/" + webFormat.ToString();
if (webFormat == WebFormats.jpg)
image.Save(response.OutputStream, imageFormat);
else
ms.WriteTo(response.OutputStream);
context.ApplicationInstance.CompleteRequest();
return true;
}
return false;
}
private static ImageSetParameters GetParameters(HttpRequest request, out string imageName, out string namespaceQualifiedTypeName)
{
ImageSetParameters retVal = new ImageSetParameters();
imageName = string.Empty;
namespaceQualifiedTypeName = string.Empty;
foreach (string queryKey in request.QueryString.AllKeys)
{
//TODO: Enumify magic strings
if (queryKey.Equals("in")) // Image Name
imageName = request.QueryString[queryKey];
else if (queryKey.Equals("t"))
namespaceQualifiedTypeName = request.QueryString[queryKey];
else
retVal[queryKey] = HttpUtility.UrlDecode(request.QueryString[queryKey]);
}
return retVal;
}
public static bool ProcessPixelRequest(HttpContext context)
{
HttpRequest request = context.Request;
HttpResponse response = context.Response;
if (!IsPixelRequest(request))
return false;
ImageSetParameters parameters = new ImageSetParameters();
string imageName = string.Empty;
string nameSpaceQualifiedTypeName = string.Empty;
parameters = GetParameters(request, out imageName, out nameSpaceQualifiedTypeName);
if (string.IsNullOrEmpty(nameSpaceQualifiedTypeName))
return ProcessResourceRequest(imageName, parameters);
try
{
//object retVal = method.Invoke(null, (object[])parameters);
IImageSet retVal = GetImageSet(nameSpaceQualifiedTypeName, parameters);
if (retVal == null)
{
response.Clear();
response.StatusCode = 404;
response.Status = "Image not found";
context.ApplicationInstance.CompleteRequest();
return true;
}
IImageSet imageSet = (IImageSet)retVal;
MemoryStream ms = new MemoryStream();
// saving to a memory stream isn't necessary for jpeg but I'm leaving this in just in case I change the format to png later
imageSet[imageName].Save(ms, ImageFormat.Png);
response.Clear();
//TODO: Parameterize the content type/ImageFormat
response.ContentType = "image/Png"; // this must match the ImageFormat in the Save call above
ms.WriteTo(response.OutputStream);
imageSet.Dispose();
context.ApplicationInstance.CompleteRequest();
}
catch(Exception ex)
{
LogManager.CurrentLog.AddEntry("An error occurred processing PixelServer request:\r\n Parameters: {0}", ex, new string[] { parameters.ToString() });
}
return true;
}
public static IImageSet GetImageSet(string namespaceQualifiedType, ImageSetParameters parameters)
{
Type type = Type.GetType(namespaceQualifiedType);
if (type == null)
throw ExceptionHelper.CreateException<PixelServerException>("The type {0} was not found.", namespaceQualifiedType);
if (type.GetInterface("IImageSetProvider") == null)
throw ExceptionHelper.CreateException<PixelServerException>("The type {0} doesn't implement interface IImageSetProvider.", namespaceQualifiedType);
ConstructorInfo ctor = type.GetConstructor(Type.EmptyTypes);
if (ctor == null)
throw ExceptionHelper.CreateException<PixelServerException>("The type {0} doesn't have a parameterless constructor defined.", namespaceQualifiedType);
object invokeTarget = ctor.Invoke(null);
MethodInfo method = type.GetMethod("GetImageSet");
IImageSet retVal = (IImageSet)method.Invoke(invokeTarget, new object[]{ parameters });
return retVal;
}
