public static CanvasSvgDocument GenerateSvgDocument( ICanvasResourceCreator device, double width, double height, SVGPathReciever path) { return(GenerateSvgDocument(device, width, height, new List <SVGPathReciever> { path })); }
public static async Task ExportSvgAsync( ExportStyle style, InstalledFont selectedFont, FontVariant selectedVariant, Character selectedChar, CanvasTypography typography) { try { string name = GetFileName(selectedFont, selectedVariant, selectedChar, "svg"); if (await PickFileAsync(name, "SVG", new[] { ".svg" }) is StorageFile file) { CachedFileManager.DeferUpdates(file); var device = Utils.CanvasDevice; var textColor = style == ExportStyle.Black ? Colors.Black : Colors.White; /* SVG Exports render at fixed size - but a) they're vectors, and b) they're * inside an auto-scaling viewport. So rendersize is *largely* pointless */ float canvasH = 1024f, canvasW = 1024f, fontSize = 1024f; using (CanvasTextLayout layout = new CanvasTextLayout(device, $"{selectedChar.Char}", new CanvasTextFormat { FontSize = fontSize, FontFamily = selectedVariant.Source, FontStretch = selectedVariant.FontFace.Stretch, FontWeight = selectedVariant.FontFace.Weight, FontStyle = selectedVariant.FontFace.Style, HorizontalAlignment = CanvasHorizontalAlignment.Center }, canvasW, canvasH)) { layout.SetTypography(0, 1, typography); using (CanvasGeometry temp = CanvasGeometry.CreateText(layout)) { var b = temp.ComputeBounds(); double scale = Math.Min(1, Math.Min(canvasW / b.Width, canvasH / b.Height)); Matrix3x2 transform = Matrix3x2.CreateTranslation(new Vector2((float)-b.Left, (float)-b.Top)) * Matrix3x2.CreateScale(new Vector2((float)scale)); using (CanvasGeometry geom = temp.Transform(transform)) { /* * Unfortunately this only constructs a monochrome path, if we want color * Win2D does not yet expose the neccessary API's to get the individual glyph * layers that make up a colour glyph. * * We'll need to handle this in C++/CX if we want to do this at some point. */ SVGPathReciever rc = new SVGPathReciever(); geom.SendPathTo(rc); Rect bounds = geom.ComputeBounds(); using (CanvasSvgDocument document = Utils.GenerateSvgDocument(device, bounds.Width, bounds.Height, rc)) { ((CanvasSvgNamedElement)document.Root.FirstChild).SetColorAttribute("fill", textColor); await Utils.WriteSvgAsync(document, file); } } } } await CachedFileManager.CompleteUpdatesAsync(file); } } catch (Exception ex) { await SimpleIoc.Default.GetInstance <IDialogService>() .ShowMessageBox(ex.Message, Localization.Get("SaveImageError")); } }