81 lines
3.1 KiB
C#
81 lines
3.1 KiB
C#
// --------------------------------------------------------------------------------------------------------------------
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// <copyright file="PngExporter.cs" company="OxyPlot">
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// Copyright (c) 2014 OxyPlot contributors
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// </copyright>
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// <summary>
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// Provides functionality to export plots to png.
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// </summary>
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// --------------------------------------------------------------------------------------------------------------------
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namespace OxyPlot.ImageSharp
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{
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using System.IO;
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/// <summary>
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/// Provides functionality to export plots to png.
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/// </summary>
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public class PngExporter : IExporter
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{
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/// <summary>
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/// Initializes a new instance of the <see cref="PngExporter"/> class.
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/// </summary>
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/// <param name="width">The width in pixels of the exported png.</param>
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/// <param name="height">The height in pixels of the exported png.</param>
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/// <param name="resolution">The resolution in dots per inch (DPI) of the exported png.</param>
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public PngExporter(int width, int height, double resolution = 96)
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{
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this.Width = width;
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this.Height = height;
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this.Resolution = resolution;
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}
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/// <summary>
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/// Gets or sets the width in pixels of the exported png.
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/// </summary>
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public int Width { get; set; }
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/// <summary>
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/// Gets or sets the height in pixels of the exported png.
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/// </summary>
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public int Height { get; set; }
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/// <summary>
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/// Gets or sets the resolution in dots per inch (DPI) of the exported png.
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/// </summary>
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public double Resolution { get; set; }
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/// <summary>
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/// Exports the specified <see cref="PlotModel" /> to the specified file.
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/// </summary>
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/// <param name="model">The model.</param>
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/// <param name="fileName">The file name.</param>
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/// <param name="width">The width.</param>
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/// <param name="height">The height.</param>
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/// <param name="resolution">The resolution in dpi (defaults to 96dpi).</param>
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public static void Export(IPlotModel model, string fileName, int width, int height, double resolution = 96)
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{
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var exporter = new PngExporter(width, height, resolution);
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using (var stream = File.Create(fileName))
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{
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exporter.Export(model, stream);
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}
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}
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/// <summary>
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/// Exports the specified <see cref="PlotModel"/> to the specified <see cref="Stream"/>.
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/// </summary>
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/// <param name="model">The model.</param>
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/// <param name="stream">The output stream.</param>
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public void Export(IPlotModel model, Stream stream)
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{
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using (var rc = new ImageRenderContext(this.Width, this.Height, model.Background, this.Resolution))
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{
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var dpiScale = this.Resolution / 96;
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model.Update(true);
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model.Render(rc, new OxyRect(0, 0, this.Width / dpiScale, this.Height / dpiScale));
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rc.SaveAsPng(stream);
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}
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}
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}
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}
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