Also apply scale factor from transformation matrix

Unfortunately, Point class is not exported from jsPDF and cannot be used here with Matrix.applyToPoint method

Author: linev

src/nodes/group.ts

@@ -23,7 +23,8 @@ export class GroupA extends Group {
       const scale = context.pdf.internal.scaleFactor
       const ph = context.pdf.internal.pageSize.getHeight()
 
-      context.pdf.link(scale*(box[0] + context.transform.tx), ph - scale*(box[1] + context.transform.ty), scale*box[2], scale*box[3], { url: href })
+      context.pdf.link(scale*(box[0] * context.transform.sx + context.transform.tx),
+                       ph - scale*(box[1] * context.transform.sy + context.transform.ty), scale*box[2], scale*box[3], { url: href })
     }
   }
 }

src/utils/bbox.ts

@@ -12,10 +12,9 @@ export function getBoundingBoxByChildren(context: Context, svgnode: SvgNode): nu
     const nodeBox = child.getBoundingBox(context)
     if ((nodeBox[0] === 0) && (nodeBox[1] === 0) && (nodeBox[2] === 0) && (nodeBox[3] === 0))
        return;
-    const transform = child.computeNodeTransform(context);
-    // TODO: check and apply rotation matrix if any
-    nodeBox[0] += transform.tx;
-    nodeBox[1] += transform.ty;
+    const transform = child.computeNodeTransform(context)
+    nodeBox[0] = nodeBox[0] * transform.sx + transform.tx
+    nodeBox[1] = nodeBox[1] * transform.sy + transform.ty
     if (boundingBox.length === 0)
       boundingBox = nodeBox;
     else