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| { | ||
| // Use IntelliSense to find out which attributes exist for C# debugging | ||
| // Use hover for the description of the existing attributes | ||
| // For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md | ||
| "version": "0.2.0", | ||
| "configurations": [ | ||
| { | ||
| "name": ".NET Core Launch (console)", | ||
| "type": "coreclr", | ||
| "request": "launch", | ||
| "preLaunchTask": "build", | ||
| // If you have changed target frameworks, make sure to update the program path. | ||
| "program": "${workspaceRoot}/ImageSharp/AvatarWithRoundedCorner/bin/Debug/netcoreapp1.1/AvatarWithRoundedCorner.dll", | ||
| "args": [], | ||
| "cwd": "${workspaceRoot}/ImageSharp/AvatarWithRoundedCorner", | ||
| // For more information about the 'console' field, see https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md#console-terminal-window | ||
| "console": "internalConsole", | ||
| "stopAtEntry": false, | ||
| "internalConsoleOptions": "openOnSessionStart" | ||
| }, | ||
| { | ||
| "name": ".NET Core Attach", | ||
| "type": "coreclr", | ||
| "request": "attach", | ||
| "processId": "${command:pickProcess}" | ||
| } | ||
| ] | ||
| } |
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| { | ||
| "version": "0.1.0", | ||
| "command": "dotnet", | ||
| "isShellCommand": true, | ||
| "args": [], | ||
| "tasks": [ | ||
| { | ||
| "taskName": "build", | ||
| "args": [ | ||
| "${workspaceRoot}/ImageSharp/AvatarWithRoundedCorner/AvatarWithRoundedCorner.csproj" | ||
| ], | ||
| "isBuildCommand": true, | ||
| "problemMatcher": "$msCompile" | ||
| } | ||
| ] | ||
| } |
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13 changes: 13 additions & 0 deletions
13
ImageSharp/DrawingTextAlongAPath/DrawingTextAlongAPath.csproj
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| <Project Sdk="Microsoft.NET.Sdk"> | ||
|
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| <PropertyGroup> | ||
| <OutputType>Exe</OutputType> | ||
| <TargetFramework>netcoreapp1.1</TargetFramework> | ||
| </PropertyGroup> | ||
|
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| <ItemGroup> | ||
| <PackageReference Include="SixLabors.ImageSharp.Drawing" Version="1.0.0-beta0001" /> | ||
| </ItemGroup> | ||
|
|
||
|
|
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| </Project> |
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| // Copyright (c) Six Labors and contributors. | ||
| // Licensed under the Apache License, Version 2.0. | ||
|
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||
| using System; | ||
| using System.Numerics; | ||
| using SixLabors.Fonts; | ||
| using SixLabors.ImageSharp; | ||
| using SixLabors.ImageSharp.Drawing; | ||
| using SixLabors.ImageSharp.Drawing.Brushes; | ||
| using SixLabors.ImageSharp.PixelFormats; | ||
| using SixLabors.ImageSharp.Processing; | ||
| using SixLabors.Primitives; | ||
| using SixLabors.Shapes; | ||
|
|
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| namespace AvatarWithRoundedCorner | ||
| { | ||
| static class Program | ||
| { | ||
| static void Main(string[] args) | ||
| { | ||
| System.IO.Directory.CreateDirectory("output"); | ||
| using (Image<Rgba32> img = new Image<Rgba32>(1500, 500)) | ||
| { | ||
| PathBuilder pathBuilder = new PathBuilder(); | ||
| pathBuilder.SetOrigin(new PointF(500, 0)); | ||
| pathBuilder.AddBezier(new PointF(50, 450), new PointF(200, 50), new PointF(300, 50), new PointF(450, 450)); | ||
| // add more complex paths and shapes here. | ||
|
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| IPath path = pathBuilder.Build(); | ||
|
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| // For production application we would recomend you create a FontCollection | ||
| // singleton and manually install the ttf fonts yourself as using SystemFonts | ||
| // can be expensive and you risk font existing or not existing on a deployment | ||
| // by deployment basis. | ||
| var font = SystemFonts.CreateFont("Arial", 39, FontStyle.Regular); | ||
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| string text = "Hello World Hello World Hello World Hello World Hello World"; | ||
| img.Mutate(ctx => ctx | ||
| .Fill(Rgba32.White) // white background image | ||
| .Draw(Rgba32.Gray, 3, path) // draw the path so we can see what the text is supposed to be following | ||
| .DrawText(text, font, Rgba32.Black, path, new TextGraphicsOptions(true) // draw the text along the path wrapping at the end of the line | ||
| { | ||
| WrapTextWidth = path.Length | ||
| })); | ||
|
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| img.Save("output/wordart.png"); | ||
| } | ||
| } | ||
|
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| public static IImageProcessingContext<TPixel> ApplyScalingWaterMark<TPixel>(this IImageProcessingContext<TPixel> processingContext, Font font, string text, TPixel color, float padding, bool wordwrap) | ||
| where TPixel : struct, IPixel<TPixel> | ||
| { | ||
| if (wordwrap) | ||
| { | ||
| return processingContext.ApplyScalingWaterMarkWordWrap(font, text, color, padding); | ||
| } | ||
| else | ||
| { | ||
| return processingContext.ApplyScalingWaterMarkSimple(font, text, color, padding); | ||
| } | ||
| } | ||
|
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| public static IImageProcessingContext<TPixel> ApplyScalingWaterMarkSimple<TPixel>(this IImageProcessingContext<TPixel> processingContext, Font font, string text, TPixel color, float padding) | ||
| where TPixel : struct, IPixel<TPixel> | ||
| { | ||
| return processingContext.Apply(img => | ||
| { | ||
| float targetWidth = img.Width - (padding * 2); | ||
| float targetHeight = img.Height - (padding * 2); | ||
|
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| // measure the text size | ||
| SizeF size = TextMeasurer.Measure(text, new RendererOptions(font)); | ||
|
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| //find out how much we need to scale the text to fill the space (up or down) | ||
| float scalingFactor = Math.Min(img.Width / size.Width, img.Height / size.Height); | ||
|
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| //create a new font | ||
| Font scaledFont = new Font(font, scalingFactor * font.Size); | ||
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| var center = new PointF(img.Width / 2, img.Height / 2); | ||
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| img.Mutate(i => i.DrawText(text, scaledFont, color, center, new TextGraphicsOptions(true) | ||
| { | ||
| HorizontalAlignment = HorizontalAlignment.Center, | ||
| VerticalAlignment = VerticalAlignment.Center | ||
| })); | ||
| }); | ||
| } | ||
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| public static IImageProcessingContext<TPixel> ApplyScalingWaterMarkWordWrap<TPixel>(this IImageProcessingContext<TPixel> processingContext, Font font, string text, TPixel color, float padding) | ||
| where TPixel : struct, IPixel<TPixel> | ||
| { | ||
| return processingContext.Apply(img => | ||
| { | ||
| float targetWidth = img.Width - (padding * 2); | ||
| float targetHeight = img.Height - (padding * 2); | ||
|
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| float targetMinHeight = img.Height - (padding * 3); // must be with in a margin width of the target height | ||
|
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| // now we are working i 2 dimensions at once and can't just scale because it will cause the text to | ||
| // reflow we need to just try multiple times | ||
|
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| var scaledFont = font; | ||
| SizeF s = new SizeF(float.MaxValue, float.MaxValue); | ||
|
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| float scaleFactor = (scaledFont.Size / 2);// everytime we change direction we half this size | ||
| int trapCount = (int)scaledFont.Size * 2; | ||
| if (trapCount < 10) | ||
| { | ||
| trapCount = 10; | ||
| } | ||
|
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| bool isTooSmall = false; | ||
|
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| while ((s.Height > targetHeight || s.Height < targetMinHeight) && trapCount > 0) | ||
| { | ||
| if (s.Height > targetHeight) | ||
| { | ||
| if (isTooSmall) | ||
| { | ||
| scaleFactor = scaleFactor / 2; | ||
| } | ||
|
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| scaledFont = new Font(scaledFont, scaledFont.Size - scaleFactor); | ||
| isTooSmall = false; | ||
| } | ||
|
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| if (s.Height < targetMinHeight) | ||
| { | ||
| if (!isTooSmall) | ||
| { | ||
| scaleFactor = scaleFactor / 2; | ||
| } | ||
| scaledFont = new Font(scaledFont, scaledFont.Size + scaleFactor); | ||
| isTooSmall = true; | ||
| } | ||
| trapCount--; | ||
|
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| s = TextMeasurer.Measure(text, new RendererOptions(scaledFont) | ||
| { | ||
| WrappingWidth = targetWidth | ||
| }); | ||
| } | ||
|
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| var center = new PointF(padding, img.Height / 2); | ||
| img.Mutate(i => i.DrawText(text, scaledFont, color, center, new TextGraphicsOptions(true) | ||
| { | ||
| HorizontalAlignment = HorizontalAlignment.Left, | ||
| VerticalAlignment = VerticalAlignment.Center, | ||
| WrapTextWidth = targetWidth | ||
| })); | ||
| }); | ||
| } | ||
| } | ||
| } |
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| # ImageSharp Samples | ||
| Various ImageSharp related samples. | ||
|
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| 1. [Avatar with rounded corners](./AvatarWithRoundedCorner/) | ||
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| Crops rounded corners of a source image leaving a nice rounded avatar. | ||
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| 2. [Draw watermark on image](./DrawWaterMarkOnImage/) | ||
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| Draw water mark over an image automaticaly scaling the font size to fill the avalible space. | ||
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| 3. [Change default encoder options](./ChangeDefaultEncoderOptions/) | ||
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| Provides an example on how you go about switching out the registered encoder for a file format and changing its default options in the process. | ||
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| 2. [Draw text along a path](./DrawingTextAlongAPath/) | ||
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| Draw some text following the contours of a path. |
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| # Samples | ||
| General samples for various Six Labors projects | ||
|
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| ## ImageSharp | ||
| Various ImageSharp related samples can be found in the [ImageSharp](./ImageSharp/) folder |
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