Library implementation

2021-01-16 01:31:39 +01:00
parent 3e3c464974
commit 8326446446
439 changed files with 5533 additions and 0 deletions
@@ -0,0 +1,98 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using NUnit.Framework;
+using QuestPDF.Drawing;
+using QuestPDF.Elements;
+using QuestPDF.Infrastructure;
+using SkiaSharp;
+
+namespace QuestPDF.Examples.Engine
+{
+    [TestFixture]
+    public class ExampleTestBase
+    {
+        private readonly Size DefaultImageSize = new Size(400, 300);
+        private const string ResultPath = "Result";
+
+        [SetUp]
+        public void Setup()
+        {
+            if (Directory.Exists(ResultPath))
+                Directory.Delete(ResultPath, true);
+            
+            Directory.CreateDirectory(ResultPath);
+        }
+        
+        [Test]
+        public void RunTest()
+        {
+            GetType()
+                .GetMethods()
+                .Where(IsExampleMethod)
+                .ToList()
+                .ForEach(HandleExample);
+        }
+
+        private bool IsExampleMethod(MethodInfo method)
+        {
+            var parameters = method.GetParameters();
+            return parameters.Length == 1 && parameters.First().ParameterType == typeof(IContainer);
+        }
+        
+        private T GetAttribute<T>(MethodInfo methodInfo) where T : Attribute
+        {
+            return methodInfo.GetCustomAttributes().FirstOrDefault(y => y is T) as T;
+        }
+        
+        private void HandleExample(MethodInfo methodInfo)
+        {
+            var size = GetAttribute<ImageSizeAttribute>(methodInfo)?.Size ?? DefaultImageSize;
+            var fileName = GetAttribute<FileNameAttribute>(methodInfo)?.FileName ?? methodInfo.Name;
+            var showResult = GetAttribute<ShowResultAttribute>(methodInfo) != null;
+            var shouldIgnore = GetAttribute<IgnoreAttribute>(methodInfo) != null;
+
+            if (shouldIgnore)
+                return;
+            
+            var container = new Container();
+            methodInfo.Invoke(this, new object[] {container});
+
+            var iteration = 1;
+            
+            while (iteration <= 1)
+            {
+                var imageData = RenderPage(container, size);
+                
+                if (imageData == null)
+                    return;
+
+                var path = Path.Combine(ResultPath, $"{fileName.ToLower()}-${iteration}.png");
+                File.WriteAllBytes(path, imageData);
+
+                if (showResult)
+                    Process.Start("explorer", path);
+                
+                iteration++;
+            }
+        }
+        
+        private byte[] RenderPage(Element element, Size size)
+        {
+            // scale the result so it is more readable
+            const float scalingFactor = 2;
+            
+            var imageInfo = new SKImageInfo((int)(size.Width * scalingFactor), (int)(size.Height * scalingFactor));
+            using var surface = SKSurface.Create(imageInfo);
+            surface.Canvas.Scale(scalingFactor);
+
+            var canvas = new Canvas(surface.Canvas);
+            element?.Draw(canvas, size);
+
+            surface.Canvas.Save();
+            return surface.Snapshot().Encode(SKEncodedImageFormat.Png, 100).ToArray();
+        }
+    }
+}