""" Kineboard: an experimental touchscreen keyboard using swipes to allow having fewer touch targets. Copyright 2025, roundabout-host.com This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public Licence as published by the Free Software Foundation, either version 3 of the Licence, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public Licence for more details. You should have received a copy of the GNU General Public Licence along with this program. If not, see . """ import itertools import sys import os import time import ruamel.yaml as yaml from pathlib import Path os.environ["GI_TYPELIB_PATH"] = "/usr/local/lib/x86_64-linux-gnu/girepository-1.0" from ctypes import CDLL CDLL("libgtk4-layer-shell.so") import gi gi.require_version("Gtk", "4.0") gi.require_version("Gtk4LayerShell", "1.0") from gi.repository import Gtk, Gdk, GObject, Gtk4LayerShell, GLib, Gio from pywayland.client import Display, EventQueue from pywayland.protocol.wayland import WlRegistry, WlSeat from pywayland.protocol.input_method_unstable_v1 import ( ZwpInputMethodContextV1, ZwpInputMethodV1 ) from pywayland.protocol.virtual_keyboard_unstable_v1 import ZwpVirtualKeyboardManagerV1 import ctypes from cffi import FFI ffi = FFI() ffi.cdef(""" void * gdk_wayland_display_get_wl_display (void * display); void * gdk_wayland_surface_get_wl_surface (void * surface); void * gdk_wayland_monitor_get_wl_output (void * monitor); """) gtk = ffi.dlopen("libgtk-4.so.1") module_directory = Path(__file__).resolve().parent custom_css = """ .kineboard-selected-character { text-decoration: underline; } """ css_provider = Gtk.CssProvider() css_provider.load_from_data(custom_css) Gtk.StyleContext.add_provider_for_display( Gdk.Display.get_default(), css_provider, 100 ) def get_layout_directories(): data_home = Path(os.getenv("XDG_DATA_HOME", Path.home() / ".local" / "share")) data_dirs = [Path(d) for d in os.getenv("XDG_DATA_DIRS", "/usr/local/share:/usr/share").split(":")] all_paths = [data_home / "kineboard" / "layouts"] + [d / "kineboard" / "layouts" for d in data_dirs] return [d for d in all_paths if d.is_dir()] class GestureZone(GObject.GEnum): CENTRAL = 0 TOP_LEFT = 1 TOP_RIGHT = 2 BOTTOM_RIGHT = 3 BOTTOM_LEFT = 4 class SwipeButton(Gtk.Frame): @GObject.Signal def top_left(self): pass @GObject.Signal def top_right(self): pass @GObject.Signal def bottom_left(self): pass @GObject.Signal def bottom_right(self): pass @GObject.Signal def central(self): pass @GObject.Signal(arg_types=(int,)) def drag_changed(self, zone): pass def __init__(self, **kwargs): Gtk.Frame.__init__(self, **kwargs) self.gesture_drag = Gtk.GestureDrag() self.gesture_drag.connect("drag-end", self.finish_drag) self.gesture_drag.connect("drag-update", self.move_drag) self.gesture_drag.connect("drag-begin", self.begin_drag) self.add_controller(self.gesture_drag) def finish_drag(self, gesture, offset_x, offset_y): if abs(offset_x) / self.get_width() + abs(offset_y) / self.get_height() > 1 / 2: if offset_x > 0 and offset_y > 0: self.emit("bottom_right") elif offset_x <= 0 and offset_y > 0: self.emit("bottom_left") elif offset_x > 0 and offset_y <= 0: self.emit("top_right") elif offset_x <= 0 and offset_y <= 0: self.emit("top_left") else: self.emit("central") def move_drag(self, gesture, offset_x, offset_y): if abs(offset_x) / self.get_width() + abs(offset_y) / self.get_height() > 1 / 2: if offset_x > 0 and offset_y > 0: self.emit("drag_changed", GestureZone.BOTTOM_RIGHT) elif offset_x <= 0 and offset_y > 0: self.emit("drag_changed", GestureZone.BOTTOM_LEFT) elif offset_x > 0 and offset_y <= 0: self.emit("drag_changed", GestureZone.TOP_RIGHT) elif offset_x <= 0 and offset_y <= 0: self.emit("drag_changed", GestureZone.TOP_LEFT) else: self.emit("drag_changed", GestureZone.CENTRAL) def begin_drag(self, gesture, start_x, start_y): self.emit("drag_changed", GestureZone.CENTRAL) class SwipeTyper(SwipeButton): @GObject.Signal(arg_types=(str,)) def typed(self, character): # Since the drag is finished, remove the underlines for label in self.label_map.values(): label.remove_css_class("kineboard-selected-character") def underline(self, zone): for label in self.label_map.values(): label.remove_css_class("kineboard-selected-character") self.label_map[zone].add_css_class("kineboard-selected-character") def __init__(self, tl, tr, bl, br, c, **kwargs): SwipeButton.__init__(self, **kwargs) self.tl = tl self.tr = tr self.bl = bl self.br = br self.c = c self.grid = Gtk.Grid(hexpand=True, vexpand=True, row_homogeneous=True, column_homogeneous=True, margin_top=4, margin_bottom=4, margin_start=4, margin_end=4) self.set_child(self.grid) self.tl_label = Gtk.Label(label=tl) self.grid.attach(self.tl_label, 0, 0, 1, 1) self.tr_label = Gtk.Label(label=tr) self.grid.attach(self.tr_label, 2, 0, 1, 1) self.bl_label = Gtk.Label(label=bl) self.grid.attach(self.bl_label, 0, 2, 1, 1) self.br_label = Gtk.Label(label=br) self.grid.attach(self.br_label, 2, 2, 1, 1) self.c_label = Gtk.Label(label=c) self.grid.attach(self.c_label, 1, 1, 1, 1) self.label_map = { GestureZone.CENTRAL: self.c_label, GestureZone.TOP_LEFT: self.tl_label, GestureZone.TOP_RIGHT: self.tr_label, GestureZone.BOTTOM_RIGHT: self.br_label, GestureZone.BOTTOM_LEFT: self.bl_label } self.connect("top_left", lambda p: self.emit("typed", tl)) self.connect("top_right", lambda p: self.emit("typed", tr)) self.connect("bottom_left", lambda p: self.emit("typed", bl)) self.connect("bottom_right", lambda p: self.emit("typed", br)) self.connect("central", lambda p: self.emit("typed", c)) self.connect("drag_changed", lambda p, zone: self.underline(zone)) class Plane(Gtk.Grid): def __init__(self, app, data, **kwargs): Gtk.Grid.__init__(self, **kwargs) self.app = app self.all_characters = "" for j, column in enumerate(data): for k, key in enumerate(column): widget = SwipeTyper(key["top_left"], key["top_right"], key["bottom_left"], key["bottom_right"], key["central"]) widget.connect("typed", self.app.typed) self.attach(widget, k, j, 1, 1) self.all_characters += key["top_left"] + key["top_right"] + key["bottom_left"] + key["bottom_right"] + key["central"] def make_xkb_keymap_from_unicodes(unicodes): symbols = [ "key { [ BackSpace ] };", "key { [ Return ] };", ] keycodes = [ " = 4094;", " = 4095;", ] for i, char in enumerate(unicodes): keycode = 0x1000 + i keysym = f"U{ord(char):04X}" symbols.append(f"key {{ [ {keysym} ] }};") keycodes.append(f" = {keycode};") return ("xkb_keymap { xkb_keycodes \"kineboard\" { minimum = 8; maximum = 65535; " + " ".join(keycodes) + " }; xkb_symbols \"kineboard\" { " + " ".join(symbols) + " }; xkb_types \"kineboard\" { type \"ONE_LEVEL\" { modifiers = none; level_name[Level1] = \"Any\"; }; }; xkb_compatibility \"kineboard\" {}; };") class Kineboard(Gtk.Application): def __init__(self): Gtk.Application.__init__( self, application_id="com.roundabout_host.roundabout.Kineboard", flags=Gio.ApplicationFlags.HANDLES_COMMAND_LINE ) self.revealer = None self.switcher = None self.character_index = {} self.keymap_fd = None self.vk = None self.keymap_text = "" self.all_characters = "" self.context = None self.input_method = None self.registry = None self.box = None self.window = None self.stack = None self.display = None self.wl_display = None self.seat = None self.vkm = None self.serial = 0 self.add_main_option( "invoke", ord("i"), GLib.OptionFlags.NONE, GLib.OptionArg.NONE, "Manually bring up the keyboard", None ) self.add_main_option( "hide", ord("h"), GLib.OptionFlags.NONE, GLib.OptionArg.NONE, "Hide the keyboard", None ) def toggle_sidebar(self, button): self.revealer.set_reveal_child(not self.revealer.get_reveal_child()) def do_startup(self): Gtk.Application.do_startup(self) self.display = Gdk.Display.get_default() self.window = Gtk.Window(application=self, title="Demo", focus_on_click=False, focusable=False, can_focus=False) Gtk4LayerShell.init_for_window(self.window) Gtk4LayerShell.set_keyboard_mode(self.window, Gtk4LayerShell.KeyboardMode.NONE) Gtk4LayerShell.set_anchor(self.window, Gtk4LayerShell.Edge.BOTTOM, True) Gtk4LayerShell.set_anchor(self.window, Gtk4LayerShell.Edge.LEFT, True) Gtk4LayerShell.set_anchor(self.window, Gtk4LayerShell.Edge.RIGHT, True) Gtk4LayerShell.auto_exclusive_zone_enable(self.window) self.box = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL) self.window.set_child(self.box) self.stack = Gtk.Stack() self.box.append(self.stack) layouts = itertools.chain.from_iterable((f for f in path.iterdir() if f.is_file()) for path in get_layout_directories()) self.all_characters = " " self.switcher = Gtk.StackSidebar(stack=self.stack) self.revealer = Gtk.Revealer(child=self.switcher, transition_type=Gtk.RevealerTransitionType.SLIDE_RIGHT) self.box.prepend(self.revealer) for layout in layouts: stack = Gtk.Stack() yaml_loader = yaml.YAML(typ="rt") data = yaml_loader.load(layout) controls = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL, spacing=8, margin_top=0, margin_bottom=8, margin_start=8, margin_end=8) layout_button = Gtk.Button(child=Gtk.Image.new_from_icon_name("edit-symbolic")) layout_button.set_size_request(48, -1) layout_button.update_property([Gtk.AccessibleProperty.LABEL], ["Switch layout"]) layout_button.connect("clicked", self.toggle_sidebar) controls.append(layout_button) if len(data["keys"]) >= 2: shift_button = Gtk.ToggleButton( child=Gtk.Image.new_from_icon_name("go-up-symbolic") ) shift_button.set_size_request(48, -1) shift_button.update_property([Gtk.AccessibleProperty.LABEL], ["Shift"]) controls.append(shift_button) def shift(button: Gtk.ToggleButton): stack.set_visible_child_name(f"plane-{int(button.get_active())}") shift_button.connect("toggled", shift) space_bar = Gtk.Button(hexpand=True) space_bar.update_property([Gtk.AccessibleProperty.LABEL], ["Space"]) space_bar.connect("clicked", lambda x: self.typed(x, " ")) controls.append(space_bar) backspace_button = Gtk.Button(child=Gtk.Image.new_from_icon_name("go-previous-symbolic")) backspace_button.set_size_request(48, -1) backspace_button.update_property([Gtk.AccessibleProperty.LABEL], ["Backspace"]) backspace_button.connect("clicked", lambda x: self.send_keysym(0xFF6)) controls.append(backspace_button) enter_button = Gtk.Button(child=Gtk.Image.new_from_icon_name("keyboard-enter-symbolic")) enter_button.set_size_request(48, -1) enter_button.update_property([Gtk.AccessibleProperty.LABEL], ["Enter"]) enter_button.add_css_class("suggested-action") enter_button.connect("clicked", lambda x: self.send_keysym(0xFF7)) controls.append(enter_button) for i, layer in enumerate(data["keys"]): grid = Plane(self, layer, row_spacing=8, column_spacing=8, row_homogeneous=True, column_homogeneous=True, margin_top=8, margin_bottom=8, margin_end=8, margin_start=8) self.all_characters += grid.all_characters stack.add_named(grid, f"plane-{i}") outer_box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL) outer_box.append(stack) outer_box.append(controls) self.stack.add_titled(outer_box, data["symbol"], data["symbol"]) ctypes.pythonapi.PyCapsule_GetPointer.restype = ctypes.c_void_p ctypes.pythonapi.PyCapsule_GetPointer.argtypes = (ctypes.py_object,) self.wl_display = Display() wl_display_ptr = gtk.gdk_wayland_display_get_wl_display( ffi.cast("void *", ctypes.pythonapi.PyCapsule_GetPointer(self.display.__gpointer__, None))) self.wl_display._ptr = wl_display_ptr self.registry = self.wl_display.get_registry() self.registry.dispatcher["global"] = self.on_global self.registry.dispatcher["global_remove"] = self.on_global_remove self.wl_display.roundtrip() if self.input_method: self.input_method.dispatcher["activate"] = self.activate_input self.input_method.dispatcher["deactivate"] = self.deactivate_input else: dialog = Gtk.AlertDialog(message="Input method protocol not supported.") dialog.show() self.keymap_text = make_xkb_keymap_from_unicodes(self.all_characters) self.character_index = {} for i, character in enumerate(self.all_characters): self.character_index[character] = i self.vk = self.vkm.create_virtual_keyboard(self.seat) self.keymap_fd = os.memfd_create("keymap") os.write(self.keymap_fd, self.keymap_text.encode("utf-8")) os.lseek(self.keymap_fd, 0, os.SEEK_SET) self.vk.keymap(1, self.keymap_fd, len(self.keymap_text.encode("utf-8"))) def activate_input(self, im, context): self.window.present() self.context = context if self.context: self.context.dispatcher["commit_state"] = self.commit_state def commit_state(self, context, serial): self.serial = serial def deactivate_input(self, im, context): self.window.set_visible(False) if self.context: self.context.destroy() self.context = None self.serial = 0 def on_global(self, registry, name, interface, version): if interface == "zwp_input_method_v1": self.input_method = registry.bind(name, ZwpInputMethodV1, version) elif interface == "wl_seat": self.seat = registry.bind(name, WlSeat, version) elif interface == "zwp_virtual_keyboard_manager_v1": self.vkm = registry.bind(name, ZwpVirtualKeyboardManagerV1, version) def on_global_remove(self, registry, name): pass def send_keysym(self, key): clock = int(time.monotonic() * 1000) if self.vk: self.vk.key(clock, key, 1) self.vk.key(clock, key, 0) def typed(self, button, characters): for char in characters: self.send_keysym(0xFF8 + self.character_index[char]) def do_activate(self): Gtk.Application.do_activate(self) # self.window.present() def do_command_line(self, command_line: Gio.ApplicationCommandLine): options = command_line.get_options_dict() args = command_line.get_arguments()[1:] if options.contains("invoke"): self.activate_input(None, None) elif options.contains("hide"): self.deactivate_input(None, None) return 0 if __name__ == "__main__": kineboard = Kineboard() kineboard.run(sys.argv)