X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.modeling%2Fsrc%2Forg%2Fsimantics%2Fmodeling%2FSCLScenegraph.java;fp=bundles%2Forg.simantics.modeling%2Fsrc%2Forg%2Fsimantics%2Fmodeling%2FSCLScenegraph.java;h=cc4489f8230812b15badd4287bae73582c47421d;hb=986ee0c8fa3d43e84036d99badfef64289eb6fac;hp=70461571dc32e4de2c5f7804a0c84a6f312f0031;hpb=060e9e392bf9fd35da738061077b285ba07fce81;p=simantics%2Fplatform.git

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 70461571d..cc4489f82 100644
--- a/bundles/org.simantics.modeling/src/org/simantics/modeling/SCLScenegraph.java
+++ b/bundles/org.simantics.modeling/src/org/simantics/modeling/SCLScenegraph.java
@@ -32,6 +32,7 @@ import org.apache.batik.dom.GenericDOMImplementation;
 import org.apache.batik.svggen.SVGGeneratorContext;
 import org.apache.batik.svggen.SVGGraphics2D;
 import org.apache.batik.svggen.SVGIDGenerator;
+import org.eclipse.swt.SWT;
 import org.simantics.Simantics;
 import org.simantics.datatypes.literal.GUID;
 import org.simantics.db.ReadGraph;
@@ -537,7 +538,7 @@ public class SCLScenegraph {
 	}
 
 	public static String renderSVG3(ICanvasContext ctx, double width, double height) {
-        return renderSVG0(width, height, ctx, p0 -> p0.stream().collect(Collectors.toMap(p1 -> p1, p2 -> p2)));
+        return renderSVG0(width, height, SWT.LEFT, SWT.TOP, ctx, p0 -> p0.stream().collect(Collectors.toMap(p1 -> p1, p2 -> p2)));
 	}
 
     /**
@@ -559,12 +560,26 @@ public class SCLScenegraph {
      */
     private static final Function1<Set<?>, Map<?, ?>> mapper = p0 -> p0.stream().collect(Collectors.toMap(p1 -> p1, p2 -> p2));
 
+    
+    /**
+     * Renders CanvasContext to SVG.
+     * @param ctx
+     * @param width Width of output image. Use -1 for autosize.
+     * @param height Height of output image. Use -1 for autosize.
+     * @param ax horizontal alignment. SWT.LEFT SWT.CENTER SWT.RIGHT are accepted values. Value is not used with autosize. 
+     * @param ay vertical alignment. SWT.TOP SWT.CENTER SWT.BOTTOM are accepted values. Value is not used with autosize.
+     * @return
+     */
+    public static String renderSVG(ICanvasContext ctx, double width, double height, int ax, int ay) {
+        return renderSVG0(width, height, ax, ay, ctx, mapper);
+    }
+    
     public static String renderSVG(ICanvasContext ctx, double width, double height) {
-        return renderSVG0(width, height, ctx, mapper);
+        return renderSVG(ctx,width,height, SWT.LEFT, SWT.TOP);
     }
 
     public static String renderSVG(ICanvasContext ctx) {
-    	return renderSVG(ctx, -1, -1);
+    	return renderSVG(ctx, -1, -1, SWT.LEFT, SWT.TOP);
     }
 
     public static String renderSVGMapIdentifiers(ICanvasContext ctx) {
@@ -579,7 +594,7 @@ public class SCLScenegraph {
      * @return
      */
     public static String renderSVGMapIdentifiers(ICanvasContext ctx, double width, double height) {
-        return renderSVG0(width, height, ctx, new Function1<Set<?>, Map<?, ?>>() {
+        return renderSVG0(width, height, SWT.LEFT, SWT.TOP, ctx, new Function1<Set<?>, Map<?, ?>>() {
 
             @Override
             public Map<?, ?> apply(Set<?> p0) {
@@ -665,7 +680,7 @@ public class SCLScenegraph {
     
     
     
-	private static String renderSVG0(double width, double height, ICanvasContext ctx, Function1<Set<?>, Map<?, ?>> mappingFunction) {
+	private static String renderSVG0(double width, double height, int ax, int ay, ICanvasContext ctx, Function1<Set<?>, Map<?, ?>> mappingFunction) {
 
 		// Get a DOMImplementation.
 		DOMImplementation domImpl = GenericDOMImplementation.getDOMImplementation();
@@ -706,6 +721,10 @@ public class SCLScenegraph {
 			// get the bounds of the content
 			Rectangle2D content = rtreeBounds;
 			
+//			int ax = SWT.LEFT;
+//			int ay = SWT.TOP;
+//			int ax = SWT.CENTER;
+//			int ay = SWT.CENTER;
 			
 			if (content != null) {
 			 // To account for dynamic padding of selection rectangles (5 units + stroke width)
@@ -716,7 +735,29 @@ public class SCLScenegraph {
 	            AffineTransform tr = new AffineTransform();
 	            tr.translate(offset, offset);
 	            tr.scale(scale, scale);
-			    tr.translate(-content.getX(), -content.getY());
+	            double dx = -content.getX();
+	            double dy = -content.getY();
+	            if (width > 0.0 && height > 0.0) {
+		            if (ax == SWT.LEFT) {
+		            	dx = -content.getX();
+		            } else if (ax == SWT.RIGHT) {
+		            	double t = ((width - 2*offset)/scale - content.getWidth());
+		            	dx = -content.getX() + t;
+		            } else {
+		            	double t = ((width - 2*offset)/scale - content.getWidth()) *0.5;
+		            	dx = -content.getX() + t;
+		            }
+		            if (ay == SWT.TOP) {
+		            	dy = -content.getY();
+		            } else if (ay == SWT.BOTTOM) {
+		            	double t = ((height - 2*offset)/scale - content.getHeight());
+		            	dy = -content.getY() + t;
+		            } else {
+		            	double t = ((height - 2*offset)/scale - content.getHeight()) * 0.5;
+		            	dy = -content.getY() + t;
+		            }
+	            }
+			    tr.translate(dx, dy);
 			    tr.getMatrix(matrix);
 			    svgGenerator.setSVGCanvasSize(new Dimension((int)Math.ceil(scale * content.getWidth()) + 2*offset, (int)Math.ceil(scale * content.getHeight()) + 2*offset));
 			} else {