Set correct dimensions on HPGL export

app.py

@@ -290,6 +290,16 @@ def catalogue():
 # 
 # FIGLET 2 SVGBOB INTERACTIVE CATALOGUE
 
+def resizeSVG (m):
+    width = int(m.group(1))
+    height = int(m.group(2))
+
+    viewbox = f'0 0 {width} {height}'
+
+    newHeight = 420
+    newWidth = (width/height) * newHeight
+
+    return f'<svg xmlns="http://www.w3.org/2000/svg" viewbox="{viewbox}" width="{newWidth}mm" height="{newHeight}mm" class="svgbob">'
 
 @app.route('/hpgl/<id>')
 def hpgl (id):
@@ -309,6 +319,8 @@ def hpgl (id):
 
     svg = re.sub(r'\<rect class="backdrop" x="\d+" y="\d+" width="\d+" height="\d+">\<\/rect\>', '', svg, flags=re.M)
 
+    svg = re.sub(r'<svg xmlns="http://www.w3.org/2000/svg" width="(\d+)" height="(\d+)" class="svgbob">', resizeSVG,svg)
+
     #print(svg)
 
     # store as a temporary file