From: Marko Luukkainen <marko.luukkainen@semantum.fi>
Date: Fri, 29 Mar 2019 10:47:11 +0000 (+0200)
Subject: Fix SCL SceneGraph is omitting graphical elements
X-Git-Tag: v1.43.0~136^2~167^2
X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=commitdiff_plain;h=refs%2Fchanges%2F24%2F2824%2F2;p=simantics%2Fplatform.git

Fix SCL SceneGraph is omitting graphical elements

gitlab #283

Change-Id: I660a9344ebdcb9aef8adecd712025bd2a623de8d
---

diff --git a/bundles/org.simantics.modeling/src/org/simantics/modeling/SCLScenegraph.java b/bundles/org.simantics.modeling/src/org/simantics/modeling/SCLScenegraph.java
index d3fd1cca9..40a526585 100644
--- a/bundles/org.simantics.modeling/src/org/simantics/modeling/SCLScenegraph.java
+++ b/bundles/org.simantics.modeling/src/org/simantics/modeling/SCLScenegraph.java
@@ -68,6 +68,7 @@ import org.simantics.scenegraph.g2d.nodes.BackgroundNode;
 import org.simantics.scenegraph.g2d.nodes.BoundsNode;
 import org.simantics.scenegraph.g2d.nodes.ConnectionNode;
 import org.simantics.scenegraph.g2d.nodes.DataNode;
+import org.simantics.scenegraph.g2d.nodes.LinkNode;
 import org.simantics.scenegraph.g2d.nodes.NavigationNode;
 import org.simantics.scenegraph.g2d.nodes.SVGNode;
 import org.simantics.scenegraph.g2d.nodes.SelectionNode;
@@ -673,22 +674,28 @@ public class SCLScenegraph {
 			// get the bounds of the content
 			Rectangle2D content = rtreeBounds;
 			
-			// To account for dynamic padding of selection rectangles (5 units + stroke width)
-			int offset = 6;
 			
-			double scale = width < 0 || height < 0 ? 1.0 : Math.min((width - 2*offset) / content.getWidth(), (height - 2*offset) / content.getHeight());
-		
-			AffineTransform tr = new AffineTransform();
-			tr.translate(offset, offset);
-			tr.scale(scale, scale);
-			tr.translate(-content.getX(), -content.getY());
-			tr.getMatrix(matrix);
+			if (content != null) {
+			 // To account for dynamic padding of selection rectangles (5 units + stroke width)
+	            int offset = 6;
+	            
+	            double scale = width < 0 || height < 0 ? 1.0 : Math.min((width - 2*offset) / content.getWidth(), (height - 2*offset) / content.getHeight());
+	        
+	            AffineTransform tr = new AffineTransform();
+	            tr.translate(offset, offset);
+	            tr.scale(scale, scale);
+			    tr.translate(-content.getX(), -content.getY());
+			    tr.getMatrix(matrix);
+			    svgGenerator.setSVGCanvasSize(new Dimension((int)Math.ceil(scale * content.getWidth()) + 2*offset, (int)Math.ceil(scale * content.getHeight()) + 2*offset));
+			} else {
+			    svgGenerator.setSVGCanvasSize(new Dimension(100, 100));
+			}
 			//svgGenerator.translate(offset, offset);
 			//svgGenerator.scale(scale, scale);
 			// translate svgGenerator to the x and y coordinates of current content
 			//svgGenerator.translate(-content.getX(), -content.getY());
 
-			svgGenerator.setSVGCanvasSize(new Dimension((int)Math.ceil(scale * content.getWidth()) + 2*offset, (int)Math.ceil(scale * content.getHeight()) + 2*offset));
+			
 			//svgGenerator.setClip(content);
 			
 			result.append(MAIN_SECTION, "<g class=\"symbols\">");
@@ -906,6 +913,18 @@ public class SCLScenegraph {
                         parentBuilder.append(ALL_SECTIONS, "\n<g transform=\"" + m + "\">");
                     }
                 }
+            } else if (!(node instanceof RouteGraphNode) && !(node instanceof LinkNode)){
+            	try {
+            		Element doc = renderSVGNode(svgGenerator, (IG2DNode)node);
+            		if (doc.getElementsByTagName("g").getLength() == 0)
+            			return;
+            		String svg = printSVGDocument(doc);
+            		parentBuilder.append(MAIN_SECTION, "<g>");
+            		parentBuilder.append(MAIN_SECTION, svg);
+            		parentBuilder.append(MAIN_SECTION, "\n</g>");
+            	} catch (Exception e) {
+            		// TODO: There are nodes that do not behave well when rendered to SVG. For backwards compatibility, we don't handle the exceptions.
+            	}
             }
 
             //enters.put(node, b.length());
diff --git a/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/BackgroundNode.java b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/BackgroundNode.java
index 46804e656..00c18879b 100644
--- a/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/BackgroundNode.java
+++ b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/nodes/BackgroundNode.java
@@ -47,7 +47,10 @@ public class BackgroundNode extends G2DNode {
     public void render(Graphics2D g) {
     	Rectangle2D drawBounds = bounds;
         if(drawBounds == null) {
-        	drawBounds = (Rectangle2D)g.getClipBounds().clone(); // Fill whole clip area if bounds is not defined
+        	if (g.getClipBounds() != null)
+        		drawBounds = (Rectangle2D)g.getClipBounds().clone(); // Fill whole clip area if bounds is not defined
+        	else
+        		return;
         }
         
         if (color!=null) {