Add common image processor

src/Markdowser/Markdowser.csproj

@@ -39,6 +39,9 @@
   </ItemGroup>
 
   <ItemGroup>
+    <Compile Update="Views\Content\CommonImageContentView.axaml.cs">
+      <DependentUpon>CommonImageContentView.axaml</DependentUpon>
+    </Compile>
     <Compile Update="Views\Content\MarkdownContentView.axaml.cs">
       <DependentUpon>MarkdownContentView.axaml</DependentUpon>
     </Compile>

src/Markdowser/Processing/Processors/CommonImageProcessor.cs

@@ -0,0 +1,21 @@
+using Markdowser.ViewModels;
+using Markdowser.ViewModels.Content;
+
+using System;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Threading.Tasks;
+
+namespace Markdowser.Processing.Processors;
+internal class CommonImageProcessor : IContentProcessor
+{
+    public bool CanProcess(HttpContentHeaders httpContentHeaders)
+    {
+        return httpContentHeaders.ContentType?.MediaType?.StartsWith("image/") == true;
+    }
+
+    public async Task<ContentViewModelBase> Process(HttpResponseMessage httpResponseMessage, IProgress<ProcessingProgress> progress)
+    {
+        return new CommonImageContentViewModel(httpResponseMessage.RequestMessage?.RequestUri?.Host?.ToString() ?? "Image", await httpResponseMessage.Content.ReadAsStreamAsync());
+    }
+}

src/Markdowser/ViewModels/Content/CommonImageContentViewModel.cs

@@ -0,0 +1,9 @@
+using Avalonia.Media.Imaging;
+
+using System.IO;
+
+namespace Markdowser.ViewModels.Content;
+internal class CommonImageContentViewModel(string title, Stream stream) : ContentViewModelBase(title)
+{
+    public Bitmap Image { get; set; } = Bitmap.DecodeToHeight(stream, 1080);
+}

src/Markdowser/ViewModels/MainWindowViewModel.cs

@@ -167,6 +167,7 @@ public partial class MainWindowViewModel : ViewModelBase
         content = DefaultContent;
 
         contentProcessorManager.RegisterProcessor(new HtmlProcessor());
+        contentProcessorManager.RegisterProcessor(new CommonImageProcessor());
 
         GlobalState.UrlChanged += (sender, url) =>
         {

src/Markdowser/Views/Content/CommonImageContentView.axaml

@@ -0,0 +1,17 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:vm="using:Markdowser.ViewModels"
+             xmlns:cmd="using:Markdowser.Commands"
+             xmlns:utils="using:Markdowser.Utilities"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             xmlns:md="https://github.com/whistyun/Markdown.Avalonia"
+             xmlns:ctxt="clr-namespace:ColorTextBlock.Avalonia;assembly=ColorTextBlock.Avalonia"
+             x:DataType="vm:Content.CommonImageContentViewModel"
+             x:Class="Markdowser.Views.Content.CommonImageContentView">
+
+    <Grid>
+        <Image Source="{Binding Image}"/>
+    </Grid>
+</UserControl>

src/Markdowser/Views/Content/CommonImageContentView.axaml.cs

@@ -0,0 +1,11 @@
+using Avalonia.Controls;
+
+namespace Markdowser.Views.Content;
+
+public partial class CommonImageContentView : UserControl
+{
+    public CommonImageContentView()
+    {
+        InitializeComponent();
+    }
+}