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Replace image resizing sample with chartist sample

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This commit is contained in:
Steve Sanderson
2017-02-22 13:27:18 +00:00
parent 3162946139
commit 627ea78e72
11 changed files with 42 additions and 113 deletions
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16
samples/misc/NodeServicesExamples/Controllers/HomeController.cs
View File

@@ -1,5 +1,6 @@
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.NodeServices;
namespace NodeServicesExamples.Controllers
{
@@ -15,8 +16,21 @@ namespace NodeServicesExamples.Controllers
return View();
}
public IActionResult ImageResizing()
public async Task<IActionResult> Chart([FromServices] INodeServices nodeServices)
{
var options = new { width = 400, height = 200, showArea = true, showPoint = true, fullWidth = true };
var data = new
{
labels = new[] { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" },
series = new[] {
new[] { 1, 5, 2, 5, 4, 3 },
new[] { 2, 3, 4, 8, 1, 2 },
new[] { 5, 4, 3, 2, 1, 0 }
}
};
ViewData["ChartMarkup"] = await nodeServices.InvokeAsync<string>("./Node/renderChart", "line", options, data);
return View();
}

64
samples/misc/NodeServicesExamples/Controllers/ResizeImage.cs
View File

@@ -1,64 +0,0 @@
using System;
using System.IO;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.NodeServices;
using Microsoft.AspNetCore.StaticFiles;
namespace NodeServicesExamples.Controllers
{
public class ResizeImageController : Controller
{
private const int MaxDimension = 1000;
private static string[] AllowedMimeTypes = new[] { "image/jpeg", "image/png", "image/gif" };
private IHostingEnvironment _environment;
private INodeServices _nodeServices;
public ResizeImageController(IHostingEnvironment environment, INodeServices nodeServices)
{
_environment = environment;
_nodeServices = nodeServices;
}
[Route("resize/{*imagePath}")]
public async Task<IActionResult> Index(string imagePath, int maxWidth, int maxHeight)
{
// Validate incoming params
if (maxWidth < 0 || maxHeight < 0 || maxWidth > MaxDimension || maxHeight > MaxDimension
|| (maxWidth + maxHeight) == 0)
{
return BadRequest("Invalid dimensions");
}
var mimeType = GetContentType(imagePath);
if (Array.IndexOf(AllowedMimeTypes, mimeType) < 0)
{
return BadRequest("Disallowed image format");
}
// Locate source image on disk
var fileInfo = _environment.WebRootFileProvider.GetFileInfo(imagePath);
if (!fileInfo.Exists)
{
return NotFound();
}
// Invoke Node and pipe the result to the response
var imageStream = await _nodeServices.InvokeAsync<Stream>(
"./Node/resizeImage",
fileInfo.PhysicalPath,
mimeType,
maxWidth,
maxHeight);
return File(imageStream, mimeType);
}
private string GetContentType(string path)
{
string result;
return new FileExtensionContentTypeProvider().TryGetContentType(path, out result) ? result : null;
}
}
}