Mirror of
try logging to find out why fonts are not working
deploy
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-28
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app/ReleaseImageGenerator.API/Program.cs
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app/ReleaseImageGenerator.API/Program.cs
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using SkiaSharp;
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using System;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.JSInterop;
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using ReleaseImageGenerator.Domain.Implementations;
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var builder = WebApplication.CreateBuilder(args);
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app.UseHttpsRedirection();
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app.MapGet("/",
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(string? text, int? width, int? height, SupportedFontFamily? fontFamily, SupportedFontWeight? fontWeight) =>
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(HttpContext context, string? text, int? width, int? height, SupportedFontFamily? fontFamily, SupportedFontWeight? fontWeight) =>
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{
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var options = new ImageGeneratorOptions(text, width ?? 1920, height ?? 1080,
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fontFamily ?? SupportedFontFamily.readexpro, fontWeight ?? SupportedFontWeight.bold);
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var imageGenerator = new ImageGenerator(options);
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return Results.File(imageGenerator.GenerateImage().ToArray(), "image/png");
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var result = imageGenerator.GenerateImage();
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result.Item2.ForEach(s => context.Response.Headers.Append("X-Debug-Log", s));
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return Results.File(result.Item1.ToArray(), "image/png");
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})
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.WithName("ImageGenerator")
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.WithOpenApi();
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app/ReleaseImageGenerator.Domain/BackgroundGenerator.cs
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app/ReleaseImageGenerator.Domain/BackgroundGenerator.cs
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public static class BackgroundGenerator
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{
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public static Unicolour GenerateBackground(SKCanvas canvas, int width, int height, Random random)
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public static Unicolour GenerateBackground(SKCanvas canvas, int width, int height, Random random, Unicolour primaryColor)
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{
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// Generate a harmonious color palette around the primary color
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var primaryColor = ColorGenerator.GetRandomColor(ColorGenerator.ColorLimitation.NEUTRAL_LIGHTNESS,
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ColorGenerator.ColorLimitation.NEUTRAL_SATURATION);
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var colorPalette = ColorGenerator.GetRandomPalette(primaryColor, 8).Select(ColorGenerator.UnicolourToSKColor).ToArray();
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var backgroundRotationIsClockwise = random.Next(2) == 0;
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app/ReleaseImageGenerator.Domain/Implementations/ImageGenerator.cs
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app/ReleaseImageGenerator.Domain/Implementations/ImageGenerator.cs
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FontWeight = options.fontWeight;
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}
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public MemoryStream GenerateImage()
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public Tuple<MemoryStream, List<string>> GenerateImage()
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{
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List<string> logger = new List<string>();
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using var surface = SKSurface.Create(new SKImageInfo(Width, Height));
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var canvas = surface.Canvas;
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var random = new Random();
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var primaryColor = BackgroundGenerator.GenerateBackground(canvas, Width, Height, random);
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var primaryColor = ColorGenerator.GetRandomColor(ColorGenerator.ColorLimitation.NEUTRAL_LIGHTNESS,
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ColorGenerator.ColorLimitation.NEUTRAL_SATURATION);
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BackgroundGenerator.GenerateBackground(canvas, Width, Height, random, primaryColor);
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PatternGenerator.GeneratePattern(canvas, Width, Height, random, primaryColor);
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NoiseGenerator.GenerateNoise(canvas, Width, Height, random);
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if (Text != null) TextGenerator.GenerateText(canvas, Text, Width, Height, FontFamily, FontWeight, primaryColor);
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if (Text != null) TextGenerator.GenerateText(canvas, Text, Width, Height, FontFamily, FontWeight, primaryColor, logger);
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// Return as JPEG
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// Return as PNG
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var stream = new MemoryStream();
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using var image = surface.Snapshot();
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using var data = image.Encode(SKEncodedImageFormat.Png, 100);
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data.SaveTo(stream);
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return stream;
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return new Tuple<MemoryStream, List<string>>(stream, logger);
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}
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}
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app/ReleaseImageGenerator.Domain/Interfaces/IImageGenerator.cs
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app/ReleaseImageGenerator.Domain/Interfaces/IImageGenerator.cs
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app/ReleaseImageGenerator.Domain/TextGenerator.cs
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app/ReleaseImageGenerator.Domain/TextGenerator.cs
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public static class TextGenerator
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{
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public static void GenerateText(SKCanvas canvas, string text, int width, int height, SupportedFontFamily fontFamily,
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SupportedFontWeight fontWeight, Unicolour primaryColor)
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SupportedFontWeight fontWeight, Unicolour primaryColor, List<string> logger)
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{
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var typeface = LoadFont(fontFamily.ToString(), fontWeight.ToString());
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var typeface = LoadFont(fontFamily.ToString(), fontWeight.ToString(), logger);
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logger.Add("Family Name: " + typeface.FamilyName);
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var fontsize = GetMaxFontSize(width - width / 3, typeface, text, 1f, width > height ? height / 3 : width / 3);
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logger.Add("Font size: " + fontsize);
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// Calculate text size and position
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var textPaint = new SKPaint
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canvas.DrawText(text, textX, textY, textPaint);
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}
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private static SKTypeface LoadFont(string fontFamily, string fontWeight)
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private static SKTypeface LoadFont(string fontFamily, string fontWeight, List<string> logger)
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{
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var fontName = $"{fontFamily}-{fontWeight}.ttf";
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var resourceName = $"YourNamespace.Resources.{fontName}";
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logger.Add("File name: " + fontName);
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using (var stream = Assembly.GetExecutingAssembly().GetManifestResourceStream(resourceName))
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{
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if (stream != null)
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{
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return SKTypeface.FromStream(stream);
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}
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}
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// Fallback to a default font if not found
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return SKTypeface.FromFile($"./fonts/{fontFamily}-{fontWeight}.ttf") ??
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SKTypeface.FromFile($"./fonts/readexpro-bold.ttf") ?? SKTypeface.Default;
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}