Enable cursor movement with braille display routing keys in PowerPoint

source/appModules/powerpnt.py

@@ -1128,6 +1128,36 @@ def _getFormatFieldAndOffsets(self, offset, formatConfig, calculateOffsets=True)
 			formatField["link"] = True
 		return formatField, (startOffset, endOffset)
 
+	def _setCaretOffset(self, offset: int):
+		if not 0 <= offset <= (maxLength := self._getStoryLength()):
+			log.debugWarning(
+				f"Got out of range {offset=} (min 0, max {maxLength}. Clamping.",
+				stack_info=True,
+			)
+			offset = max(0, min(offset, maxLength))
+		# Use the TextRange.select method to move the text caret to a 0-length TextRange.
+		# The TextRange.characters method is 1-indexed.
+		self.obj.ppObject.textRange.characters(offset + 1, 0).select()
+
+	def _setSelectionOffsets(self, start: int, end: int):
+		if not start < end:
+			log.debug(f"start must be less than end. Got {start=}, {end=}.", stack_info=True)
+			return
+		maxLength = self._getStoryLength()
+		# Having start = maxLength does not make sense, as there will be no selection if this is the case.
+		if not 0 <= start < maxLength:
+			log.debugWarning(
+				f"Got out of range {start=} (min 0, max {maxLength - 1}. Clamping.",
+				stack_info=True,
+			)
+			start = max(0, min(start, maxLength - 1))
+		# Having end = 0 does not make sense, as there will be no selection if this is the case.
+		if not 0 < end <= maxLength:
+			log.debugWarning(f"Got out of range {end=} (min 1, max {maxLength}. Clamping.", stack_info=True)
+			end = max(1, min(end, maxLength))
+		# The TextRange.characters method is 1-indexed.
+		self.obj.ppObject.textRange.characters(start + 1, end - start).select()
+
 
 class Table(Shape):
 	"""Represents the table shape in Powerpoint. Provides row and column counts."""

user_docs/en/changes.md

@@ -17,6 +17,9 @@ The available options are:
 * The timeout to perform a multiple keypress is now configurable; this may be especially useful for people with dexterity impairment. (#11929, @CyrilleB79)
 * When performing a braille cursor routing action, NVDA can now automatically speak the character at the cursor. (#8072, @LeonarddeR)
   * This option is disabled by default. You can enable "Speak character when routing cursor in text" in NVDA's braille settings.
+* Improvements in PowerPoint: (#17004)
+  * It is now possible to use braille display routing keys to move the text cursor in Microsoft PowerPoint. (#9101)
+  * It is now possible to use NVDA's review cursor selection commands to select text in Microsoft PowerPoint.
 
 ### Changes