/// <summary>
/// Saves the graph into a stream.
/// </summary>
/// <param name="doc">The graph document to export.</param>
/// <param name="stream">The stream to render inot.</param>
/// <param name="backbrush1">First brush used to fill the background of the image (normally used with 24bbp bitmap formats to make the background opaque. Can be <c>null</c>.</param>
/// <param name="backbrush2">Second brush used to fill the background of the image. Can be <c>null</c>.</param>
/// <param name="pixelformat">Specify the pixelformat here.</param>
/// <param name="sourceDpiResolution">Resolution at which the graph document is rendered into a bitmap.</param>
/// <param name="destinationDpiResolution">Resolution which is assigned to the bitmap. This determines the physical size of the bitmap.</param>
/// <returns>The pixel dimensions of the image if the rendering was successful. The tuple (0,0) is returned if the rendering was unsuccessful, e.g. if no exporter was available.</returns>
public static (int PixelsX, int PixelsY) RenderToStream(this GraphDocument doc, System.IO.Stream stream, Altaxo.Graph.Gdi.BrushX backbrush1, Altaxo.Graph.Gdi.BrushX backbrush2, PixelFormat pixelformat, double sourceDpiResolution, double destinationDpiResolution)
{
var exportOptions = new Altaxo.Graph.Gdi.GraphExportOptions();
exportOptions.TrySetImageAndPixelFormat(ImageFormat.Png, PixelFormat.Format32bppArgb);
exportOptions.SourceDpiResolution = sourceDpiResolution;
exportOptions.DestinationDpiResolution = destinationDpiResolution;
exportOptions.BackgroundBrush = backbrush1;
return(RenderToStream(doc, stream, exportOptions));
}
/// <summary>
/// Saves the graph as an bitmap file and returns the bitmap.
/// </summary>
/// <param name="doc">The graph document to export.</param>
/// <param name="backbrush1">First brush used to fill the background of the image (normally used with 24bbp bitmap formats to make the background opaque. Can be <c>null</c>.</param>
/// <param name="backbrush2">Second brush used to fill the background of the image. Can be <c>null</c>.</param>
/// <param name="pixelformat">Specify the pixelformat here.</param>
/// <param name="sourceDpiResolution">Resolution at which the graph document is rendered into a bitmap.</param>
/// <param name="destinationDpiResolution">Resolution which is assigned to the bitmap. This determines the physical size of the bitmap.</param>
/// <returns>The saved bitmap. You should call Dispose when you no longer need the bitmap.</returns>
public static Bitmap RenderAsBitmap(this GraphDocument doc, Altaxo.Graph.Gdi.BrushX backbrush1, Altaxo.Graph.Gdi.BrushX backbrush2, PixelFormat pixelformat, double sourceDpiResolution, double destinationDpiResolution)
{
var imageExporter = Current.ProjectService.GetProjectItemImageExporter(doc);
if (null == imageExporter)
{
return(null);
}
Bitmap bitmap = null;
using (var memStream = new System.IO.MemoryStream())
{
var exportOptions = new Altaxo.Graph.Gdi.GraphExportOptions();
exportOptions.TrySetImageAndPixelFormat(ImageFormat.Png, PixelFormat.Format32bppArgb);
exportOptions.SourceDpiResolution = sourceDpiResolution;
exportOptions.DestinationDpiResolution = destinationDpiResolution;
exportOptions.BackgroundBrush = backbrush1;
imageExporter.ExportAsImageToStream(doc, exportOptions, memStream);
memStream.Seek(0, System.IO.SeekOrigin.Begin);
bitmap = (Bitmap)Bitmap.FromStream(memStream);
}
int bmpWidth = bitmap.Width;
int bmpHeight = bitmap.Height;
/*
* double outputScaling = sourceDpiResolution / destinationDpiResolution;
* bitmap.SetResolution((float)(bmpWidth / (outputScaling * doc.Size.X / 72)), (float)(bmpHeight / (outputScaling * doc.Size.Y / 72)));
*
* using (Graphics grfx = Graphics.FromImage(bitmap))
* {
* // Set everything to high quality
* grfx.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
* grfx.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
*
* // 2014-10-10 Setting InterpolationMode to HighQualityBicubic and PixelOffsetMode to HighQuality
* // causes problems when rendering small bitmaps (at a large magnification, for instance the density image legend):
* // the resulting image seems a litte soft, the colors somehow distorted, so I decided not to use them here any more
*
* // grfx.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
* // grfx.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
*
* grfx.PageUnit = GraphicsUnit.Point;
* grfx.ScaleTransform((float)outputScaling, (float)outputScaling);
* grfx.SetClip(new RectangleF(0, 0, (float)doc.Size.X, (float)doc.Size.Y));
*
* if (null != backbrush1)
* {
* backbrush1.SetEnvironment(new RectangleD2D(0, 0, doc.Size.X, doc.Size.Y), sourceDpiResolution);
* grfx.FillRectangle(backbrush1, new RectangleF(0, 0, (float)doc.Size.X, (float)doc.Size.Y));
* }
*
* if (null != backbrush2)
* {
* backbrush2.SetEnvironment(new RectangleD2D(0, 0, doc.Size.X, doc.Size.Y), sourceDpiResolution);
* grfx.FillRectangle(backbrush2, new RectangleF(0, 0, (float)doc.Size.X, (float)doc.Size.Y));
* }
* }
*/
bitmap.SetResolution((float)destinationDpiResolution, (float)destinationDpiResolution);
return(bitmap);
}
public static void ShowFileExportTiffDialog(this GraphDocument doc)
{
var opt = new GraphExportOptions();
opt.TrySetImageAndPixelFormat(ImageFormat.Tiff, PixelFormat.Format32bppArgb);
opt.SourceDpiResolution = 300;
opt.DestinationDpiResolution = 300;
ShowFileExportDialog(doc, opt);
}
/// <summary>
/// Saves the graph as an bitmap file and returns the bitmap.
/// </summary>
/// <param name="doc">The graph document to export.</param>
/// <param name="backbrush1">First brush used to fill the background of the image (normally used with 24bbp bitmap formats to make the background opaque. Can be <c>null</c>.</param>
/// <param name="backbrush2">Second brush used to fill the background of the image. Can be <c>null</c>.</param>
/// <param name="pixelformat">Specify the pixelformat here.</param>
/// <param name="sourceDpiResolution">Resolution at which the graph document is rendered into a bitmap.</param>
/// <param name="destinationDpiResolution">Resolution which is assigned to the bitmap. This determines the physical size of the bitmap.</param>
/// <returns>The saved bitmap. You should call Dispose when you no longer need the bitmap.</returns>
public static Bitmap RenderAsBitmap(this GraphDocument doc, Altaxo.Graph.Gdi.BrushX backbrush1, Altaxo.Graph.Gdi.BrushX backbrush2, PixelFormat pixelformat, double sourceDpiResolution, double destinationDpiResolution)
{
var imageExporter = Current.ProjectService.GetProjectItemImageExporter(doc);
if (null == imageExporter)
return null;
Bitmap bitmap = null;
using (var memStream = new System.IO.MemoryStream())
{
var exportOptions = new Altaxo.Graph.Gdi.GraphExportOptions();
exportOptions.TrySetImageAndPixelFormat(ImageFormat.Png, PixelFormat.Format32bppArgb);
exportOptions.SourceDpiResolution = sourceDpiResolution;
exportOptions.DestinationDpiResolution = destinationDpiResolution;
exportOptions.BackgroundBrush = backbrush1;
imageExporter.ExportAsImageToStream(doc, exportOptions, memStream);
memStream.Seek(0, System.IO.SeekOrigin.Begin);
bitmap = (Bitmap)Bitmap.FromStream(memStream);
}
int bmpWidth = bitmap.Width;
int bmpHeight = bitmap.Height;
/*
double outputScaling = sourceDpiResolution / destinationDpiResolution;
bitmap.SetResolution((float)(bmpWidth / (outputScaling * doc.Size.X / 72)), (float)(bmpHeight / (outputScaling * doc.Size.Y / 72)));
using (Graphics grfx = Graphics.FromImage(bitmap))
{
// Set everything to high quality
grfx.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
grfx.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
// 2014-10-10 Setting InterpolationMode to HighQualityBicubic and PixelOffsetMode to HighQuality
// causes problems when rendering small bitmaps (at a large magnification, for instance the density image legend):
// the resulting image seems a litte soft, the colors somehow distorted, so I decided not to use them here any more
// grfx.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
// grfx.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
grfx.PageUnit = GraphicsUnit.Point;
grfx.ScaleTransform((float)outputScaling, (float)outputScaling);
grfx.SetClip(new RectangleF(0, 0, (float)doc.Size.X, (float)doc.Size.Y));
if (null != backbrush1)
{
backbrush1.SetEnvironment(new RectangleD2D(0, 0, doc.Size.X, doc.Size.Y), sourceDpiResolution);
grfx.FillRectangle(backbrush1, new RectangleF(0, 0, (float)doc.Size.X, (float)doc.Size.Y));
}
if (null != backbrush2)
{
backbrush2.SetEnvironment(new RectangleD2D(0, 0, doc.Size.X, doc.Size.Y), sourceDpiResolution);
grfx.FillRectangle(backbrush2, new RectangleF(0, 0, (float)doc.Size.X, (float)doc.Size.Y));
}
}
*/
bitmap.SetResolution((float)destinationDpiResolution, (float)destinationDpiResolution);
return bitmap;
}
public static void ShowFileExportMetafileDialog(this GraphDocument doc)
{
var opt = new GraphExportOptions();
opt.TrySetImageAndPixelFormat(ImageFormat.Emf, PixelFormat.Format32bppArgb);
ShowFileExportDialog(doc, opt);
}
