MetafileRenderingOptions

ImageSaveOptions.MetafileRenderingOptions property

Allows to specify how metafiles are treated in the rendered output.

public MetafileRenderingOptions MetafileRenderingOptions { get; }

Remarks

When Vector is specified, Aspose.Words renders metafile to vector graphics using its own metafile rendering engine first and then renders vector graphics to the image.

When Bitmap is specified, Aspose.Words renders metafile directly to the image using the GDI+ metafile rendering engine.

GDI+ metafile rendering engine works faster, supports almost all metafile features but on low resolutions may produce inconsistent result when compared to the rest of vector graphics (especially for text) on the page. Aspose.Words metafile rendering engine will produce more consistent result even on low resolutions but works slower and may inaccurately render complex metafiles.

The default value for MetafileRenderingMode is Bitmap.

Examples

Shows how to set the rendering mode when saving documents with Windows Metafile images to other image formats.

Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);

builder.InsertImage(ImageDir + "Windows MetaFile.wmf");

// When we save the document as an image, we can pass a SaveOptions object to
// determine how the saving operation will process Windows Metafiles in the document.
// If we set the "RenderingMode" property to "MetafileRenderingMode.Vector",
// or "MetafileRenderingMode.VectorWithFallback", we will render all metafiles as vector graphics.
// If we set the "RenderingMode" property to "MetafileRenderingMode.Bitmap", we will render all metafiles as bitmaps.
ImageSaveOptions options = new ImageSaveOptions(SaveFormat.Png);
options.MetafileRenderingOptions.RenderingMode = metafileRenderingMode;
// Aspose.Words uses GDI+ for raster operations emulation, when value is set to true.
options.MetafileRenderingOptions.UseGdiRasterOperationsEmulation = true;

doc.Save(ArtifactsDir + "ImageSaveOptions.WindowsMetaFile.png", options);

See Also

ImageSaveOptions.JpegQuality ImageSaveOptions.PageSet