protected static void PaintMarkers(GdiGraphicsRenderer renderer,
                                           SvgStyleableElement styleElm, GdiGraphics gr)
        {
            // OPTIMIZE

            if (styleElm is ISharpMarkerHost)
            {
                string markerStartUrl  = ExtractMarkerUrl(styleElm.GetPropertyValue("marker-start", "marker"));
                string markerMiddleUrl = ExtractMarkerUrl(styleElm.GetPropertyValue("marker-mid", "marker"));
                string markerEndUrl    = ExtractMarkerUrl(styleElm.GetPropertyValue("marker-end", "marker"));

                if (markerStartUrl.Length > 0)
                {
                    GdiMarkerRendering grNode = CreateByUri(styleElm.OwnerDocument,
                                                            styleElm.BaseURI, markerStartUrl) as GdiMarkerRendering;
                    if (grNode != null)
                    {
                        grNode.PaintMarker(renderer, gr, SvgMarkerPosition.Start, styleElm);
                    }
                }

                if (markerMiddleUrl.Length > 0)
                {
                    // TODO markerMiddleUrl != markerStartUrl
                    GdiMarkerRendering grNode = CreateByUri(styleElm.OwnerDocument,
                                                            styleElm.BaseURI, markerMiddleUrl) as GdiMarkerRendering;
                    if (grNode != null)
                    {
                        grNode.PaintMarker(renderer, gr, SvgMarkerPosition.Mid, styleElm);
                    }
                }

                if (markerEndUrl.Length > 0)
                {
                    // TODO: markerEndUrl != markerMiddleUrl
                    GdiMarkerRendering grNode = CreateByUri(styleElm.OwnerDocument,
                                                            styleElm.BaseURI, markerEndUrl) as GdiMarkerRendering;
                    if (grNode != null)
                    {
                        grNode.PaintMarker(renderer, gr, SvgMarkerPosition.End, styleElm);
                    }
                }
            }
        }
Beispiel #2
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        protected static void PaintMarkers(GdiGraphicsRenderer renderer,
                                           SvgStyleableElement styleElm, GdiGraphics gr)
        {
            // OPTIMIZE

            if (styleElm is ISharpMarkerHost)
            {
                string markerStartUrl  = ExtractMarkerUrl(styleElm.GetPropertyValue("marker-start", "marker"));
                string markerMiddleUrl = ExtractMarkerUrl(styleElm.GetPropertyValue("marker-mid", "marker"));
                string markerEndUrl    = ExtractMarkerUrl(styleElm.GetPropertyValue("marker-end", "marker"));
                string markerAll       = ExtractMarkerUrl(styleElm.GetPropertyValue("marker", "marker"));

                //  The SVG specification defines three properties to reference markers: marker-start,
                // marker -mid, marker-end. It also provides a shorthand property, marker. Using the marker
                // property from a style sheet is equivalent to using all three (start, mid, end).
                // However, shorthand properties cannot be used as presentation attributes.
                if (!string.IsNullOrWhiteSpace(markerAll) && !IsPresentationMarker(styleElm))
                {
                    if (string.IsNullOrWhiteSpace(markerStartUrl))
                    {
                        markerStartUrl = markerAll;
                    }
                    if (string.IsNullOrWhiteSpace(markerMiddleUrl))
                    {
                        markerMiddleUrl = markerAll;
                    }
                    if (string.IsNullOrWhiteSpace(markerEndUrl))
                    {
                        markerEndUrl = markerAll;
                    }
                }

                if (markerStartUrl.Length > 0)
                {
                    GdiMarkerRendering grNode = CreateByUri(styleElm.OwnerDocument,
                                                            styleElm.BaseURI, markerStartUrl) as GdiMarkerRendering;
                    if (grNode != null)
                    {
                        grNode.PaintMarker(renderer, gr, SvgMarkerPosition.Start, styleElm);
                    }
                }

                if (markerMiddleUrl.Length > 0)
                {
                    // TODO markerMiddleUrl != markerStartUrl
                    GdiMarkerRendering grNode = CreateByUri(styleElm.OwnerDocument,
                                                            styleElm.BaseURI, markerMiddleUrl) as GdiMarkerRendering;
                    if (grNode != null)
                    {
                        grNode.PaintMarker(renderer, gr, SvgMarkerPosition.Mid, styleElm);
                    }
                }

                if (markerEndUrl.Length > 0)
                {
                    // TODO: markerEndUrl != markerMiddleUrl
                    GdiMarkerRendering grNode = CreateByUri(styleElm.OwnerDocument,
                                                            styleElm.BaseURI, markerEndUrl) as GdiMarkerRendering;
                    if (grNode != null)
                    {
                        grNode.PaintMarker(renderer, gr, SvgMarkerPosition.End, styleElm);
                    }
                }
            }
        }