REDIS

BlazorCanvas/BlazorCanvas.Server/BlazorCanvas.Server.csproj

@@ -7,6 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="Aspire.StackExchange.Redis.OutputCaching" Version="8.0.0-preview.1.23557.2" />
     <PackageReference Include="Foundry.Extensions.Canvas" Version="1.1.6" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
   </ItemGroup>

BlazorCanvas/BlazorCanvas.Server/Components/Data/CanvasService.cs

@@ -8,20 +8,24 @@ using Newtonsoft.Json;
 using System.Drawing;
 using System.Threading;
 using Microsoft.AspNetCore.Mvc.ApplicationModels;
+using Microsoft.AspNetCore.Connections;
+using Aspire.StackExchange.Redis;
+using StackExchange.Redis;
+using System.Runtime.CompilerServices;
 
 namespace BlazorCanvas.Server.Components.Data;
 
 // https://www.codeproject.com/Articles/5269947/Drawing-with-the-HTML-Canvas-Element-in-Blazor-Ser
 
-public class CanvasService
+public class CanvasService {
-{
     private Canvas2DContext? _currentCanvasContext;
     private IJSRuntime _jsRuntime;
+    private IConnectionMultiplexer _cache;
     private CanvasCommand _lastCommand = new();
 
-    public CanvasService(IJSRuntime jsRuntime)
+    public CanvasService(IJSRuntime jsRuntime, IConnectionMultiplexer cache) {
-    {
         _jsRuntime = jsRuntime;
+        _cache = cache;
     }
 
     public string currentColor { get; set; } = "Black";
@@ -32,26 +36,21 @@ public class CanvasService
 
     // TODO: Dessiner à partir des commandes de Franz.
 
-    public async void Draw(IEnumerable<CanvasCommand> lscommand)
+    public async void Draw(IEnumerable<CanvasCommand> lsCommand) {
-    {
+        if (_currentCanvasContext is null) {
-        if (_currentCanvasContext is null)
-        {
             _currentCanvasContext = await myCanvas.CreateCanvas2DAsync();
             await _currentCanvasContext.ClearRectAsync(0, 0, 1920, 1080);
         }
         await _currentCanvasContext.BeginBatchAsync();
-        foreach (CanvasCommand command in lscommand)
+        foreach (CanvasCommand command in lsCommand) {
-        {
             await _currentCanvasContext.SetFillStyleAsync(command.Color);
             await _currentCanvasContext.FillRectAsync(command.X, command.Y, command.PointSize, command.PointSize);
         }
         await _currentCanvasContext.EndBatchAsync();
     }
 
-    public async void Draw(CanvasCommand command)
+    public async void Draw(CanvasCommand command) {
-    {
+        if (_currentCanvasContext is null) {
-        if (_currentCanvasContext is null)
-        {
             _currentCanvasContext = await myCanvas.CreateCanvas2DAsync();
             await _currentCanvasContext.ClearRectAsync(0, 0, 1920, 1080);
         }
@@ -59,23 +58,20 @@ public class CanvasService
         await _currentCanvasContext.FillRectAsync(command.X, command.Y, command.PointSize, command.PointSize);
     }
 
-    public async void HandleMouse(MouseEventArgs eventArgs)
+    public async void HandleMouse(MouseEventArgs eventArgs) {
-    {
         double mouseX = 0, mouseY = 0;
 
         if (eventArgs.Buttons == 0 || eventArgs.Buttons > 2)
             return; // Rien faire si aucun bouton est appuyé ou si les deux boutons/ d'autres boutons sont appuyés.
 
-        if (divCanvas.Id?.Length > 0)
+        if (divCanvas.Id?.Length > 0) {
-        {
             string data = await _jsRuntime.InvokeAsync<string>("getDivCanvasOffsets",
                 new object[] { divCanvas });
             string color = "White";
             CanvasCommand command = new();
             JObject? offsets = (JObject?)JsonConvert.DeserializeObject(data);
 
-            if (offsets is not null && offsets.HasValues)
+            if (offsets is not null && offsets.HasValues) { // Translation entre le canvas et la souris.
-            { // Translation entre le canvas et la souris.
                 mouseX = eventArgs.PageX - offsets.Value<double>("offsetLeft");
                 mouseY = eventArgs.PageY - offsets.Value<double>("offsetTop");
             }
@@ -83,8 +79,7 @@ public class CanvasService
             if (eventArgs.Buttons == 1) // Couleur si bouton gauche, blanc si bouton droit
                 color = currentColor;
 
-            if (snap)
+            if (snap) { // Magnétisme boboche.
-            { // Magnétisme boboche.
                 mouseX -= mouseX % pointSize;
                 mouseY -= mouseY % pointSize;
             }

BlazorCanvas/BlazorCanvas.Server/Program.cs

@@ -1,5 +1,6 @@
 using BlazorCanvas.Server.Components;
 using BlazorCanvas.Server.Components.Data;
+using Microsoft.Extensions.Caching.Distributed;
 using Microsoft.Extensions.Hosting;
 
 var builder = WebApplication.CreateBuilder(args);
@@ -9,6 +10,8 @@ builder.AddServiceDefaults();
 // Add services to the container.
 builder.Services.AddRazorComponents()
     .AddInteractiveServerComponents();
+builder.AddRedisOutputCache("cache");
+//builder.AddKeyedRabbitMQ("mq");
 
 builder.Services.AddScoped<CanvasService>();