Text auto-alignment in port and groups.

Text in port is aligned by center.
In group it is centered in header rect.
When icon is supported, text is aligned vertically with it,
and centered between icon and right group edge.

src/patchcanvas.py

@@ -1962,11 +1962,17 @@ class CanvasPort(QGraphicsItem):
 
         painter.setPen(poly_pen)
         painter.drawPath(path)
-        painter.setClipping(False) # For square port
 
         painter.setPen(text_pen)
         painter.setFont(self.m_port_font)
-        painter.drawText(text_pos, self.m_port_name)
+        textRect = QRectF(portRect)
+        if self.m_port_mode == PORT_MODE_INPUT:
+            textRect.setRight(poly_locx[1] - rounding)
+            textRect.adjust(3, 0, 0, 0)
+        else:
+            textRect.setLeft(poly_locx[1] + rounding)
+            textRect.adjust(0, 0, -3, 0)
+        painter.drawText(textRect, Qt.AlignCenter|Qt.TextDontClip, self.m_port_name)
 
         if self.isSelected() != self.m_last_selected_state:
             for connection in canvas.connection_list:
@@ -2525,13 +2531,9 @@ class CanvasBox(QGraphicsItem):
             painter.setPen(canvas.theme.box_text)
 
         if canvas.theme.box_use_icon:
-            textPos = QPointF(25, canvas.theme.box_text_ypos)
-        else:
-            appNameSize = QFontMetrics(self.m_font_name).width(self.m_group_name)
-            rem = self.p_width - appNameSize
-            textPos = QPointF(rem/2, canvas.theme.box_text_ypos)
-
-        painter.drawText(textPos, self.m_group_name)
+            rect.setCoords(self.icon_svg.p_size.right(), self.icon_svg.p_size.top(),
+                           self.p_width-rounding/2, self.icon_svg.p_size.bottom())
+        painter.drawText(rect, Qt.AlignCenter|Qt.TextDontClip, self.m_group_name)
 
         self.repaintLines()