Enhance readonly state handling in range selection items

Author: PierreRaybaut

plotpy/items/annotation.py

@@ -170,6 +170,16 @@ def draw(
         if self.label.isVisible():
             self.label.draw(painter, xMap, yMap, canvasRect)
 
+    # ----AbstractShape API------------------------------------------------------
+    def set_readonly(self, state: bool) -> None:
+        """Set object readonly state
+
+        Args:
+            state: True if object is readonly, False otherwise
+        """
+        super().set_readonly(state)
+        self.shape.set_readonly(state)
+
     # ----Public API-------------------------------------------------------------
     def create_shape(self):
         """Return the shape object associated to this annotated shape object"""
@@ -185,6 +195,8 @@ def create_label(self) -> DataInfoLabel:
         label_param = LabelParam(_("Label"), icon="label.png")
         label_param.read_config(CONF, "plot", "shape/label")
         label_param.anchor = self.LABEL_ANCHOR
+        if self.LABEL_ANCHOR == "C":
+            label_param.xc = label_param.yc = 0
         return DataInfoLabel(label_param, [self])
 
     def is_label_visible(self) -> bool:

plotpy/items/shape/range.py

@@ -319,7 +319,7 @@ def draw(
         cx = rct.center().x()
         painter.drawLine(QC.QPointF(cx, rct.top()), QC.QPointF(cx, rct.bottom()))
 
-        if self.can_resize():
+        if self.can_resize() and not self.is_readonly():
             painter.setPen(pen)
             x0, x1, y = self.get_handles_pos()
             sym.drawSymbol(painter, QC.QPointF(x0, y))
@@ -481,7 +481,7 @@ def draw(
         cy = rct.center().y()
         painter.drawLine(QC.QPointF(rct.left(), cy), QC.QPointF(rct.right(), cy))
 
-        if self.can_resize():
+        if self.can_resize() and not self.is_readonly():
             painter.setPen(pen)
             y0, y1, x = self.get_handles_pos()
             sym.drawSymbol(painter, QC.QPointF(x, y0))