A patch to make output better for particular applications

[user202729]

Some apps does not handle very fast simulated keys correctly.

• IBus: Troubleshooting: Common Issues · openstenoproject/plover Wiki # Missing or jumbled output -- IBus
• LibreOffice: Garbled Output with Later Versions of LibreOffice in Linux · Issue #1059 · openstenoproject/plover

There has been Add config option for sleeping between key presses by oberien · Pull Request #1132 · openstenoproject/plover ; but it's slow and somewhat annoying, so I made a plugin to patch something into Plover source.

(also some programs (Qt <6) have other issues such as not receiving non-BMP characters etc. See [QTBUG-89184] Unicode key mappings are not working in all Qt based applications - Qt Bug Tracker)

Code contribution (so it works on other operating systems) are welcome.

Ideas to make it a proper plugin are also welcome. (however it should not be limited, but if I try to make it very general I end up reimplementing eval)

---

Usage

Install these plugins:

• user202729/plover-startup-py: Quick and dirty plugin to run something when Plover starts.
• user202729/getactivewindow-x: Separate component to get information on the active window in X.

Then add the file in Plover configuration directory:

plover_startup_py_config.py:

from getactivewindow import active_window_id, window_name, window_class
from plover.oslayer.xkeyboardcontrol import KeyboardEmulation
import time

last_keycode=None
last_modifiers=None

@patch_function(KeyboardEmulation, "_send_keycode")
def patched_send_keycode(self, keycode, modifiers=0)->None:
	global last_keycode, last_modifiers

	#import time
	#start=time.time()
	cls=window_class(active_window_id())
	#cls=()
	#end=time.time()
	#print("elapse", end-start)

	if "lyx" in cls:
		if last_keycode==keycode:
			self._display.sync()
			time.sleep(0.03)

		patched_send_keycode._original(self, keycode, modifiers)

	elif "libreoffice" in cls:
		if (
				(last_keycode, last_modifiers)==(self._backspace_mapping.keycode, self._backspace_mapping.modifiers) and
				(keycode, modifiers)!=(self._backspace_mapping.keycode, self._backspace_mapping.modifiers)
				):
			self._display.sync()
			time.sleep(0.03)
		
		patched_send_keycode._original(self, keycode, modifiers)

	else:
		patched_send_keycode._original(self, keycode, modifiers)

	last_keycode=keycode
	last_modifiers=modifiers

@patch_function(KeyboardEmulation, "send_string")
def patched_send_string(self, s: str)->None:
	if (
			all(ord(x)<0x10000 for x in s)
			or "qutebrowser" not in window_class(active_window_id())
			):
		patched_send_string._original(self, s)
		return

	from PyQt5.QtWidgets import QApplication
	clipboard = QApplication.clipboard()
	oldText: str=clipboard.text()
	clipboard.setText(s)
	time.sleep(0.05)
	self.send_key_combination("Control_L(V)")
	time.sleep(0.05)
	clipboard.setText(oldText)

Needless to say, don't download and run Python code from untrusted sources. My plugins tend to make the process easier for the user.