Backport PR spyder-ide#23316 on branch 6.x (PR: Prevent Chinese input…

… method to block edit input area (spyder-ide#23319)

spyder/plugins/ipythonconsole/widgets/control.py

@@ -50,7 +50,8 @@ def __init__(self, parent=None):
         # To not use Spyder calltips obtained through the monitor
         self.calltips = False
 
-    # ---- Public methods ----------------------------------------------------
+    # ---- Public methods
+    # -------------------------------------------------------------------------
     def insert_horizontal_ruler(self):
         """
         Insert a horizontal ruler with the appropriate color according
@@ -69,7 +70,8 @@ def insert_horizontal_ruler(self):
         cursor.movePosition(cursor.End)
         cursor.insertFrame(ruler)
 
-    # ---- Private methods ---------------------------------------------------
+    # ---- Private methods
+    # -------------------------------------------------------------------------
     def _key_paren_left(self, text):
         """ Action for '(' """
         self.current_prompt_pos = self.parentWidget()._prompt_pos
@@ -79,7 +81,8 @@ def _key_paren_left(self, text):
                 self.show_object_info(last_obj)
         self.insert_text(text)
 
-    # ---- Qt methods --------------------------------------------------------
+    # ---- Qt methods
+    # -------------------------------------------------------------------------
     def showEvent(self, event):
         """Reimplement Qt Method"""
         self.sig_visibility_changed.emit(True)

spyder/widgets/mixins.py

@@ -24,7 +24,7 @@
 from qtpy.QtCore import QPoint, QRegularExpression, Qt, QUrl
 from qtpy.QtGui import (
     QDesktopServices, QFontMetrics, QTextCursor, QTextDocument)
-from qtpy.QtWidgets import QApplication
+from qtpy.QtWidgets import QApplication, QPlainTextEdit, QTextEdit
 from spyder_kernels.utils.dochelpers import (getargspecfromtext, getobj,
                                              getsignaturefromtext)
 
@@ -1498,6 +1498,30 @@ def _enter_array(self, inline):
                     self.sig_text_was_inserted.emit()
                 cursor.endEditBlock()
 
+    # ---- Qt methods
+    # -------------------------------------------------------------------------
+    def inputMethodQuery(self, query):
+        """
+        Prevent Chinese input method to block edit input area.
+
+        Notes
+        -----
+        This was suggested by a user in spyder-ide/spyder#23313. So, it's not
+        tested by us.
+        """
+        if query == Qt.ImInputItemClipRectangle:
+            cursor_rect = self.cursorRect()
+            margins = self.viewportMargins()
+            cursor_rect.moveTopLeft(
+                cursor_rect.topLeft() + QPoint(margins.left(), margins.top())
+            )
+            return cursor_rect
+
+        if isinstance(self, QPlainTextEdit):
+            QPlainTextEdit.inputMethodQuery(self, query)
+        elif isinstance(self, QTextEdit):
+            QTextEdit.inputMethodQuery(self, query)
+
 
 class TracebackLinksMixin(object):
     """Mixin to make file names in tracebacks and anchors clickable."""