update ui scale on the fly

MIERUNE · Aug 29, 2023 · 17806f9 · 17806f9
1 parent 6c94595
commit 17806f9
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/ui/main_dialog.py b/ui/main_dialog.py
@@ -50,7 +50,10 @@ def init_ui(self):
             ]
         )
 
-        self.ui.label_scale_value.setText(str(get_scale()))
+        # calculate export scale and show to ui
+        self._update_ui_scale()
+        # update export scale shown in ui when change map extent
+        iface.mapCanvas().extentsChanged.connect(self._update_ui_scale)
 
         # close dialog when project cleared to avoid crash: Issue #55
         QgsProject.instance().cleared.connect(self.close)
@@ -274,3 +277,6 @@ def _process_node_recursive(self, node, parent_node):
 
             if child_type == "group":
                 self._process_node_recursive(child, item)
+
+    def _update_ui_scale(self):
+        self.ui.label_scale_value.setText(str(get_scale()))