updatePositions: optimization

source/patchcanvas.py

@@ -2386,9 +2386,6 @@ class CanvasBox(QGraphicsItem):
     def updatePositions(self):
         self.prepareGeometryChange()
 
-        max_in_width   = max_out_width  = 0
-        port_spacing   = canvas.theme.port_height + canvas.theme.port_spacing
-
         # Check Text Name size
         app_name_size = QFontMetrics(self.m_font_name).width(self.m_group_name) + 30
         self.p_width = max( 50, app_name_size )
@@ -2399,54 +2396,57 @@ class CanvasBox(QGraphicsItem):
             if port.group_id == self.m_group_id and port.port_id in self.m_port_list_ids:
                 port_list.append(port)
 
-        # Get Max Box Width, vertical ports re-positioning
-        port_types = [PORT_TYPE_AUDIO_JACK, PORT_TYPE_MIDI_JACK, PORT_TYPE_MIDI_ALSA, PORT_TYPE_PARAMETER]
-        last_in_type  = last_out_type = PORT_TYPE_NULL
-        last_in_pos  = canvas.theme.box_header_height + canvas.theme.box_header_spacing
-        last_out_pos = canvas.theme.box_header_height + canvas.theme.box_header_spacing
-        for port_type in port_types:
+        if len(port_list) == 0:
+            self.p_height = canvas.theme.box_header_height
+        else:
+            max_in_width = max_out_width = 0
+            port_spacing = canvas.theme.port_height + canvas.theme.port_spacing
+
+            # Get Max Box Width, vertical ports re-positioning
+            port_types = [PORT_TYPE_AUDIO_JACK, PORT_TYPE_MIDI_JACK, PORT_TYPE_MIDI_ALSA, PORT_TYPE_PARAMETER]
+            last_in_type = last_out_type = PORT_TYPE_NULL
+            last_in_pos  = last_out_pos  = canvas.theme.box_header_height + canvas.theme.box_header_spacing
+            for port_type in port_types:
+                for port in port_list:
+
+                    if port.port_type != port_type:
+                        continue
+
+                    size = QFontMetrics(self.m_font_port).width(port.port_name)
+
+                    if port.port_mode == PORT_MODE_INPUT:
+                        max_in_width = max( max_in_width, size )
+                        if port.port_type != last_in_type:
+                            if last_in_type != PORT_TYPE_NULL:
+                                last_in_pos += canvas.theme.port_spacingT
+                            last_in_type = port.port_type
+                        port.widget.setY(last_in_pos)
+                        last_in_pos += port_spacing
+
+                    elif port.port_mode == PORT_MODE_OUTPUT:
+                        max_out_width = max( max_out_width, size )
+                        if port.port_type != last_out_type:
+                            if last_out_type != PORT_TYPE_NULL:
+                                last_out_pos += canvas.theme.port_spacingT
+                            last_out_type = port.port_type
+                        port.widget.setY(last_out_pos)
+                        last_out_pos += port_spacing
+
+            # Horizontal ports re-positioning
             for port in port_list:
-
-                if port.port_type != port_type:
-                    continue
-
-                size = QFontMetrics(self.m_font_port).width(port.port_name)
-
                 if port.port_mode == PORT_MODE_INPUT:
-                    max_in_width = max( max_in_width, size )
-                    if port.port_type != last_in_type:
-                        if last_in_type != PORT_TYPE_NULL:
-                            last_in_pos += canvas.theme.port_spacingT
-                        last_in_type = port.port_type
-                    port.widget.setY(last_in_pos)
-                    last_in_pos += port_spacing
+                    port.widget.setX(1 + canvas.theme.port_offset)
+                    port.widget.setPortWidth(max_in_width)
 
                 elif port.port_mode == PORT_MODE_OUTPUT:
-                    max_out_width = max( max_out_width, size )
-                    if port.port_type != last_out_type:
-                        if last_out_type != PORT_TYPE_NULL:
-                            last_out_pos += canvas.theme.port_spacingT
-                        last_out_type = port.port_type
-                    port.widget.setY(last_out_pos)
-                    last_out_pos += port_spacing
-
-        # Horizontal ports re-positioning
-        for port in port_list:
-            if port.port_mode == PORT_MODE_INPUT:
-                port.widget.setX(1 + canvas.theme.port_offset)
-                port.widget.setPortWidth(max_in_width)
-
-            elif port.port_mode == PORT_MODE_OUTPUT:
-                port.widget.setX(self.p_width - max_out_width - canvas.theme.port_offset - 13)
-                port.widget.setPortWidth(max_out_width)
-
-        self.p_width = max(self.p_width, 30 + max_in_width + max_out_width)
-        self.p_height = max(last_in_pos, last_out_pos)
-        self.p_height += max(canvas.theme.port_spacing, canvas.theme.port_spacingT) - canvas.theme.port_spacing
-        self.p_height += canvas.theme.box_pen.widthF()
+                    port.widget.setX(self.p_width - max_out_width - canvas.theme.port_offset - 13)
+                    port.widget.setPortWidth(max_out_width)
 
-        if len(port_list) == 0:
-            self.p_height = canvas.theme.box_header_height
+            self.p_width = max(self.p_width, 30 + max_in_width + max_out_width)
+            self.p_height = max(last_in_pos, last_out_pos)
+
+            self.p_height += max(canvas.theme.port_spacing, canvas.theme.port_spacingT) - canvas.theme.port_spacing
+            self.p_height += canvas.theme.box_pen.widthF()
 
         self.repaintLines(True)
         self.update()