Image scaling dpi (#540)

* DPI-based image scaling prototype (not ready for production)

* Added ImageDpi API

* Added support for image DPI scaling

Source/QuestPDF.Examples/ImageExamples.cs

@@ -66,28 +66,24 @@ namespace QuestPDF.Examples
             });
         }
         
+        
+        
         [Test]
-        public void ReusingTheSameImageFileShouldBePossible()
+        public void ImageResolutionScaling()
         {
-            var image = Image.FromBinaryData(Placeholders.Image(300, 100)).DisposeAfterDocumentGeneration();
-                
-            RenderingTest
-                .Create()
-                .ProducePdf()
-                .PageSize(PageSizes.A4)
-                .ShowResults()
-                .Render(container =>
+            var image = Image.FromFile("large-image.jpg");
+            
+            Document
+                .Create(document =>
                 {
-                    container
-                        .Padding(20)
-                        .Column(column =>
-                        {
-                            column.Spacing(20);
-                                
-                            foreach (var i in Enumerable.Range(0, 1000))
-                                column.Item().Image(image);
-                        });
-                });
+                    document.Page(page =>
+                    {
+                        page.Size(210, 210);
+                        page.Margin(50);
+                        page.Content().Image(image);
+                    });
+                })
+                .GeneratePdf($"test.pdf");
         }
     }
 }

Source/QuestPDF.Examples/QuestPDF.Examples.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFramework>netcoreapp3.1</TargetFramework>
+        <TargetFramework>net6.0</TargetFramework>
         <IsPackable>false</IsPackable>
     </PropertyGroup>
 
@@ -32,6 +32,12 @@
       <None Update="pdf-icon.svg">
         <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
       </None>
+      <None Update="large-image.png">
+        <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      </None>
+      <None Update="large-image.jpg">
+        <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      </None>
     </ItemGroup>
 
 </Project>