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oxyplot#170: The WPF PngExporter should use TextFormattingMode.Ideal
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@objorke
objorke committed Aug 21, 2014
1 parent 0cc21fd commit 30b360b
Showing 1 changed file with 175 additions and 175 deletions.
350 changes: 175 additions & 175 deletions Source/OxyPlot.Wpf/PngExporter.cs
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Original file line number Diff line number Diff line change
@@ -1,176 +1,176 @@
// --------------------------------------------------------------------------------------------------------------------
// <copyright file="PngExporter.cs" company="OxyPlot">
// The MIT License (MIT)
//
// Copyright (c) 2014 OxyPlot contributors
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// </copyright>
// <summary>
// Provides functionality to export plots to png.
// </summary>
// --------------------------------------------------------------------------------------------------------------------

namespace OxyPlot.Wpf
{
using System.IO;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Imaging;

/// <summary>
/// Provides functionality to export plots to png.
/// </summary>
public class PngExporter
{
/// <summary>
/// Initializes a new instance of the <see cref="PngExporter" /> class.
/// </summary>
public PngExporter()
{
this.Width = 700;
this.Height = 400;
this.Resolution = 96;
this.Background = OxyColors.White;
}

/// <summary>
/// Gets or sets the width of the output image.
/// </summary>
public int Width { get; set; }

/// <summary>
/// Gets or sets the height of the output image.
/// </summary>
public int Height { get; set; }

/// <summary>
/// Gets or sets the resolution of the output image.
/// </summary>
/// <value>The resolution in dots per inch (dpi).</value>
public int Resolution { get; set; }

/// <summary>
/// Gets or sets the background color.
/// </summary>
public OxyColor Background { get; set; }

/// <summary>
/// Exports the specified plot model to a file.
/// </summary>
/// <param name="model">The model to export.</param>
/// <param name="fileName">The file name.</param>
/// <param name="width">The width of the output bitmap.</param>
/// <param name="height">The height of the output bitmap.</param>
/// <param name="background">The background color. The default value is <c>null</c>.</param>
/// <param name="resolution">The resolution (resolution). The default value is 96.</param>
public static void Export(PlotModel model, string fileName, int width, int height, OxyColor background, int resolution = 96)
{
using (var s = File.Create(fileName))
{
Export(model, s, width, height, background, resolution);
}
}

/// <summary>
/// Exports the specified plot model to a stream.
/// </summary>
/// <param name="model">The model to export.</param>
/// <param name="stream">The stream.</param>
/// <param name="width">The width of the output bitmap.</param>
/// <param name="height">The height of the output bitmap.</param>
/// <param name="background">The background color. The default value is <c>null</c>.</param>
/// <param name="resolution">The resolution (resolution). The default value is 96.</param>
public static void Export(PlotModel model, Stream stream, int width, int height, OxyColor background, int resolution = 96)
{
var exporter = new PngExporter { Width = width, Height = height, Background = background, Resolution = resolution };
exporter.Export(model, stream);
}

/// <summary>
/// Exports the specified plot model to a bitmap.
/// </summary>
/// <param name="model">The plot model.</param>
/// <param name="width">The width.</param>
/// <param name="height">The height.</param>
/// <param name="background">The background.</param>
/// <param name="resolution">The resolution (dpi).</param>
/// <returns>A bitmap.</returns>
public static BitmapSource ExportToBitmap(
PlotModel model,
int width,
int height,
OxyColor background,
int resolution = 96)
{
var exporter = new PngExporter { Width = width, Height = height, Background = background, Resolution = resolution };
return exporter.ExportToBitmap(model);
}

/// <summary>
/// Exports the specified <see cref="PlotModel" /> to the specified <see cref="Stream" />.
/// </summary>
/// <param name="model">The model.</param>
/// <param name="stream">The output stream.</param>
public void Export(PlotModel model, Stream stream)
{
var bmp = ExportToBitmap(model);

var encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(bmp));

encoder.Save(stream);
}

/// <summary>
/// Exports the specified plot model to a bitmap.
/// </summary>
/// <param name="model">The model to export.</param>
/// <returns>A bitmap.</returns>
public BitmapSource ExportToBitmap(IPlotModel model)
{
var scale = 96d / this.Resolution;
var canvas = new Canvas { Width = this.Width * scale, Height = this.Height * scale, Background = this.Background.ToBrush() };
canvas.Measure(new Size(canvas.Width, canvas.Height));
canvas.Arrange(new Rect(0, 0, canvas.Width, canvas.Height));

var rc = new ShapesRenderContext(canvas) { RendersToScreen = false };
model.Update(true);
model.Render(rc, canvas.Width, canvas.Height);

canvas.UpdateLayout();

var bmp = new RenderTargetBitmap(this.Width, this.Height, this.Resolution, this.Resolution, PixelFormats.Pbgra32);
bmp.Render(canvas);
return bmp;

// alternative implementation:
// http://msdn.microsoft.com/en-us/library/system.windows.media.imaging.rendertargetbitmap.aspx
// var dv = new DrawingVisual();
// using (var ctx = dv.RenderOpen())
// {
// var vb = new VisualBrush(canvas);
// ctx.DrawRectangle(vb, null, new Rect(new Point(), new Size(width, height)));
// }
// bmp.Render(dv);
}
}
// --------------------------------------------------------------------------------------------------------------------
// <copyright file="PngExporter.cs" company="OxyPlot">
// The MIT License (MIT)
//
// Copyright (c) 2014 OxyPlot contributors
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// </copyright>
// <summary>
// Provides functionality to export plots to png.
// </summary>
// --------------------------------------------------------------------------------------------------------------------

namespace OxyPlot.Wpf
{
using System.IO;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Imaging;

/// <summary>
/// Provides functionality to export plots to png.
/// </summary>
public class PngExporter
{
/// <summary>
/// Initializes a new instance of the <see cref="PngExporter" /> class.
/// </summary>
public PngExporter()
{
this.Width = 700;
this.Height = 400;
this.Resolution = 96;
this.Background = OxyColors.White;
}

/// <summary>
/// Gets or sets the width of the output image.
/// </summary>
public int Width { get; set; }

/// <summary>
/// Gets or sets the height of the output image.
/// </summary>
public int Height { get; set; }

/// <summary>
/// Gets or sets the resolution of the output image.
/// </summary>
/// <value>The resolution in dots per inch (dpi).</value>
public int Resolution { get; set; }

/// <summary>
/// Gets or sets the background color.
/// </summary>
public OxyColor Background { get; set; }

/// <summary>
/// Exports the specified plot model to a file.
/// </summary>
/// <param name="model">The model to export.</param>
/// <param name="fileName">The file name.</param>
/// <param name="width">The width of the output bitmap.</param>
/// <param name="height">The height of the output bitmap.</param>
/// <param name="background">The background color. The default value is <c>null</c>.</param>
/// <param name="resolution">The resolution (resolution). The default value is 96.</param>
public static void Export(PlotModel model, string fileName, int width, int height, OxyColor background, int resolution = 96)
{
using (var s = File.Create(fileName))
{
Export(model, s, width, height, background, resolution);
}
}

/// <summary>
/// Exports the specified plot model to a stream.
/// </summary>
/// <param name="model">The model to export.</param>
/// <param name="stream">The stream.</param>
/// <param name="width">The width of the output bitmap.</param>
/// <param name="height">The height of the output bitmap.</param>
/// <param name="background">The background color. The default value is <c>null</c>.</param>
/// <param name="resolution">The resolution (resolution). The default value is 96.</param>
public static void Export(PlotModel model, Stream stream, int width, int height, OxyColor background, int resolution = 96)
{
var exporter = new PngExporter { Width = width, Height = height, Background = background, Resolution = resolution };
exporter.Export(model, stream);
}

/// <summary>
/// Exports the specified plot model to a bitmap.
/// </summary>
/// <param name="model">The plot model.</param>
/// <param name="width">The width.</param>
/// <param name="height">The height.</param>
/// <param name="background">The background.</param>
/// <param name="resolution">The resolution (dpi).</param>
/// <returns>A bitmap.</returns>
public static BitmapSource ExportToBitmap(
PlotModel model,
int width,
int height,
OxyColor background,
int resolution = 96)
{
var exporter = new PngExporter { Width = width, Height = height, Background = background, Resolution = resolution };
return exporter.ExportToBitmap(model);
}

/// <summary>
/// Exports the specified <see cref="PlotModel" /> to the specified <see cref="Stream" />.
/// </summary>
/// <param name="model">The model.</param>
/// <param name="stream">The output stream.</param>
public void Export(PlotModel model, Stream stream)
{
var bmp = ExportToBitmap(model);

var encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(bmp));

encoder.Save(stream);
}

/// <summary>
/// Exports the specified plot model to a bitmap.
/// </summary>
/// <param name="model">The model to export.</param>
/// <returns>A bitmap.</returns>
public BitmapSource ExportToBitmap(IPlotModel model)
{
var scale = 96d / this.Resolution;
var canvas = new Canvas { Width = this.Width * scale, Height = this.Height * scale, Background = this.Background.ToBrush() };
canvas.Measure(new Size(canvas.Width, canvas.Height));
canvas.Arrange(new Rect(0, 0, canvas.Width, canvas.Height));

var rc = new ShapesRenderContext(canvas) { RendersToScreen = false, TextFormattingMode = TextFormattingMode.Ideal };
model.Update(true);
model.Render(rc, canvas.Width, canvas.Height);

canvas.UpdateLayout();

var bmp = new RenderTargetBitmap(this.Width, this.Height, this.Resolution, this.Resolution, PixelFormats.Pbgra32);
bmp.Render(canvas);
return bmp;

// alternative implementation:
// http://msdn.microsoft.com/en-us/library/system.windows.media.imaging.rendertargetbitmap.aspx
// var dv = new DrawingVisual();
// using (var ctx = dv.RenderOpen())
// {
// var vb = new VisualBrush(canvas);
// ctx.DrawRectangle(vb, null, new Rect(new Point(), new Size(width, height)));
// }
// bmp.Render(dv);
}
}
}

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