Python script, ASCII text executable
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"""
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Traditional window list applet for the Panorama panel, compatible
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with wlroots-based compositors.
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Copyright 2025, roundabout-host.com <vlad@roundabout-host.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public Licence as published by
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the Free Software Foundation, either version 3 of the Licence, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public Licence for more details.
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You should have received a copy of the GNU General Public Licence
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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"""
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import dataclasses
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import os
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import sys
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import locale
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import typing
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from pathlib import Path
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from pywayland.client import Display, EventQueue
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from pywayland.protocol.wayland import WlRegistry, WlSeat, WlSurface, WlCompositor, WlOutput
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from pywayland.protocol.wayland.wl_output import WlOutputProxy
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from pywayland.protocol.wlr_foreign_toplevel_management_unstable_v1 import (
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ZwlrForeignToplevelManagerV1,
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ZwlrForeignToplevelHandleV1
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)
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import panorama_panel
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import gi
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gi.require_version("Gtk", "4.0")
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gi.require_version("GdkWayland", "4.0")
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from gi.repository import Gtk, GLib, Gtk4LayerShell, Gio, Gdk, Pango, GObject
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module_directory = Path(__file__).resolve().parent
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locale.bindtextdomain("panorama-window-list", module_directory / "locale")
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_ = lambda x: locale.dgettext("panorama-window-list", x)
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import ctypes
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from cffi import FFI
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ffi = FFI()
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ffi.cdef("""
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void * gdk_wayland_display_get_wl_display (void * display);
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void * gdk_wayland_surface_get_wl_surface (void * surface);
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void * gdk_wayland_monitor_get_wl_output (void * monitor);
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""")
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gtk = ffi.dlopen("libgtk-4.so.1")
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@Gtk.Template(filename=str(module_directory / "panorama-window-list-options.ui"))
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class WindowListOptions(Gtk.Window):
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__gtype_name__ = "WindowListOptions"
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button_width_adjustment: Gtk.Adjustment = Gtk.Template.Child()
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workspace_filter_checkbutton: Gtk.CheckButton = Gtk.Template.Child()
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def __init__(self, **kwargs):
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super().__init__(**kwargs)
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self.connect("close-request", lambda *args: self.destroy())
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def split_bytes_into_ints(array: bytes, size: int = 4) -> list[int]:
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if len(array) % size:
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raise ValueError(f"The byte string's length must be a multiple of {size}")
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values: list[int] = []
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for i in range(0, len(array), size):
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values.append(int.from_bytes(array[i : i+size], byteorder=sys.byteorder))
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return values
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def get_widget_rect(widget: Gtk.Widget) -> tuple[int, int, int, int]:
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width = int(widget.get_width())
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height = int(widget.get_height())
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toplevel = widget.get_root()
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if not toplevel:
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return None, None, width, height
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x, y = widget.translate_coordinates(toplevel, 0, 0)
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x = int(x)
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y = int(y)
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return x, y, width, height
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@dataclasses.dataclass
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class WindowState:
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minimised: bool
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maximised: bool
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fullscreen: bool
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focused: bool
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@classmethod
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def from_state_array(cls, array: bytes):
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values = split_bytes_into_ints(array)
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instance = cls(False, False, False, False)
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for value in values:
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match value:
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case 0:
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instance.maximised = True
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case 1:
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instance.minimised = True
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case 2:
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instance.focused = True
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case 3:
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instance.fullscreen = True
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return instance
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from gi.repository import Gtk, Gdk
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class WindowButtonOptions:
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def __init__(self, max_width: int):
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self.max_width = max_width
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class WindowButtonLayoutManager(Gtk.LayoutManager):
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def __init__(self, options: WindowButtonOptions, **kwargs):
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super().__init__(**kwargs)
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self.options = options
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def do_measure(self, widget, orientation, for_size):
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child = widget.get_first_child()
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if child is None:
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return 0, 0, 0, 0
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if orientation == Gtk.Orientation.HORIZONTAL:
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min_width, nat_width, min_height, nat_height = child.measure(Gtk.Orientation.HORIZONTAL, for_size)
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width = self.options.max_width
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return min_width, width, min_height, nat_height
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else:
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min_width, nat_width, min_height, nat_height = child.measure(Gtk.Orientation.VERTICAL, for_size)
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return min_height, nat_height, 0, 0
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def do_allocate(self, widget, width, height, baseline):
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child = widget.get_first_child()
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if child is None:
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return
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alloc_width = min(width, self.options.max_width)
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alloc = Gdk.Rectangle()
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alloc.x = 0
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alloc.y = 0
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alloc.width = alloc_width
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alloc.height = height
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child.allocate(alloc.width, alloc.height, baseline)
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class WindowButton(Gtk.ToggleButton):
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def __init__(self, window_id, window_title, **kwargs):
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super().__init__(**kwargs)
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self.window_id: ZwlrForeignToplevelHandleV1 = window_id
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self.wf_ipc_id: typing.Optional[int] = None
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self.set_has_frame(False)
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self.label = Gtk.Label()
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self.icon = Gtk.Image.new_from_icon_name("application-x-executable")
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box = Gtk.Box()
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box.append(self.icon)
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box.append(self.label)
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self.set_child(box)
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self.window_title = window_title
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self.window_state = WindowState(False, False, False, False)
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self.label.set_ellipsize(Pango.EllipsizeMode.END)
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self.set_hexpand(True)
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self.set_vexpand(True)
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self.drag_source = Gtk.DragSource(actions=Gdk.DragAction.MOVE)
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self.drag_source.connect("prepare", self.provide_drag_data)
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self.drag_source.connect("drag-begin", self.drag_begin)
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self.drag_source.connect("drag-cancel", self.drag_cancel)
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self.add_controller(self.drag_source)
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self.menu = Gio.Menu()
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# TODO: toggle the labels when needed
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self.minimise_item = Gio.MenuItem.new(_("_Minimise"), "button.minimise")
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self.maximise_item = Gio.MenuItem.new(_("Ma_ximise"), "button.maximise")
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self.menu.append_item(self.minimise_item)
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self.menu.append_item(self.maximise_item)
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self.menu.append(_("_Close"), "button.close")
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self.menu.append(_("Window list _options"), "applet.options")
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self.popover_menu = Gtk.PopoverMenu.new_from_model(self.menu)
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self.popover_menu.set_parent(self)
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self.popover_menu.set_flags(Gtk.PopoverMenuFlags.NESTED)
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self.popover_menu.set_has_arrow(False)
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self.popover_menu.set_halign(Gtk.Align.END)
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self.right_click_controller = Gtk.GestureClick(button=3)
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self.right_click_controller.connect("pressed", self.show_menu)
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self.add_controller(self.right_click_controller)
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self.action_group = Gio.SimpleActionGroup()
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close_action = Gio.SimpleAction.new("close")
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close_action.connect("activate", self.close_associated)
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self.action_group.insert(close_action)
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minimise_action = Gio.SimpleAction.new("minimise")
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minimise_action.connect("activate", self.minimise_associated)
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self.action_group.insert(minimise_action)
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maximise_action = Gio.SimpleAction.new("maximise")
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maximise_action.connect("activate", self.maximise_associated)
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self.action_group.insert(maximise_action)
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self.insert_action_group("button", self.action_group)
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self.middle_click_controller = Gtk.GestureClick(button=2)
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self.middle_click_controller.connect("released", self.close_associated)
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self.add_controller(self.middle_click_controller)
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def show_menu(self, gesture, n_presses, x, y):
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rect = Gdk.Rectangle()
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rect.x = int(x)
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rect.y = int(y)
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rect.width = 1
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rect.height = 1
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self.popover_menu.popup()
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def close_associated(self, *args):
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self.window_id.close()
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def minimise_associated(self, action, *args):
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if self.window_state.minimised:
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self.window_id.unset_minimized()
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else:
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self.window_id.set_minimized()
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def maximise_associated(self, action, *args):
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if self.window_state.maximised:
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self.window_id.unset_maximized()
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else:
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self.window_id.set_maximized()
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def provide_drag_data(self, source: Gtk.DragSource, x: float, y: float):
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app = self.get_root().get_application()
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app.drags[id(self)] = self
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value = GObject.Value()
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value.init(GObject.TYPE_UINT64)
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value.set_uint64(id(self))
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return Gdk.ContentProvider.new_for_value(value)
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def drag_begin(self, source: Gtk.DragSource, drag: Gdk.Drag):
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paintable = Gtk.WidgetPaintable.new(self).get_current_image()
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source.set_icon(paintable, 0, 0)
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self.hide()
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def drag_cancel(self, source: Gtk.DragSource, drag: Gdk.Drag, reason: Gdk.DragCancelReason):
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self.show()
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return False
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@property
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def window_title(self):
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return self.label.get_text()
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@window_title.setter
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def window_title(self, value):
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self.label.set_text(value)
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def set_icon_from_app_id(self, app_id):
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app_ids = app_id.split()
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# If on Wayfire, find the IPC ID
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for app_id in app_ids:
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if app_id.startswith("wf-ipc-"):
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self.wf_ipc_id = int(app_id.removeprefix("wf-ipc-"))
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break
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# Try getting an icon from the correct theme
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icon_theme = Gtk.IconTheme.get_for_display(self.get_display())
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for app_id in app_ids:
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if icon_theme.has_icon(app_id):
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self.icon.set_from_icon_name(app_id)
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return
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# If that doesn't work, try getting one from .desktop files
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for app_id in app_ids:
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try:
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desktop_file = Gio.DesktopAppInfo.new(app_id + ".desktop")
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if desktop_file:
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self.icon.set_from_gicon(desktop_file.get_icon())
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return
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except TypeError:
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# Due to a bug, the constructor may sometimes return C NULL
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pass
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class WFWindowList(panorama_panel.Applet):
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name = _("Wayfire window list")
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description = _("Traditional window list (for Wayfire and other wlroots compositors)")
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def __init__(self, orientation=Gtk.Orientation.HORIZONTAL, config=None):
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super().__init__(orientation=orientation, config=config)
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if config is None:
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config = {}
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self.set_homogeneous(True)
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self.window_button_options = WindowButtonOptions(config.get("max_button_width", 256))
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self.show_only_this_wf_workspace = config.get("show_only_this_wf_workspace", True)
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self.show_only_this_output = config.get("show_only_this_output", True)
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self.toplevel_buttons: dict[ZwlrForeignToplevelHandleV1, WindowButton] = {}
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self.toplevel_buttons_by_wf_id: dict[int, WindowButton] = {}
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# This button doesn't belong to any window but is used for the button group and to be
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# selected when no window is focused
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self.initial_button = Gtk.ToggleButton()
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self.display = None
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self.my_output = None
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self.wl_surface_ptr = None
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self.registry = None
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self.compositor = None
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self.seat = None
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self.context_menu = self.make_context_menu()
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panorama_panel.track_popover(self.context_menu)
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right_click_controller = Gtk.GestureClick()
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right_click_controller.set_button(3)
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right_click_controller.connect("pressed", self.show_context_menu)
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self.add_controller(right_click_controller)
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action_group = Gio.SimpleActionGroup()
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options_action = Gio.SimpleAction.new("options", None)
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options_action.connect("activate", self.show_options)
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action_group.add_action(options_action)
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self.insert_action_group("applet", action_group)
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# Wait for the widget to be in a layer-shell window before doing this
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self.connect("realize", self.get_wl_resources)
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self.options_window = None
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# Support button reordering
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self.drop_target = Gtk.DropTarget.new(GObject.TYPE_UINT64, Gdk.DragAction.MOVE)
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self.drop_target.set_gtypes([GObject.TYPE_UINT64])
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self.drop_target.connect("drop", self.drop_button)
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self.add_controller(self.drop_target)
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# Make a Wayfire socket for workspace handling
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try:
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import wayfire
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self.wf_socket = wayfire.WayfireSocket()
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self.wf_socket.watch()
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fd = self.wf_socket.client.fileno()
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GLib.io_add_watch(GLib.IOChannel.unix_new(fd), GLib.IO_IN, self.on_wf_event, priority=GLib.PRIORITY_HIGH)
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except:
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# Wayfire raises Exception itself, so it cannot be narrowed down
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self.wf_socket = None
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def get_wf_output_by_name(self, name):
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if not self.wf_socket:
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return None
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for output in self.wf_socket.list_outputs():
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if output["name"] == name:
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return output
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return None
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def on_wf_event(self, source, condition):
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if condition & GLib.IO_IN:
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try:
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message = self.wf_socket.read_next_event()
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event = message.get("event")
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match event:
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case "view-workspace-changed":
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view = message.get("view", {})
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if view["output-name"] == self.get_root().monitor_name:
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output = self.get_wf_output_by_name(view["output-name"])
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current_workspace = output["workspace"]["x"], output["workspace"]["y"]
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if not self.show_only_this_wf_workspace or (message["to"]["x"], message["to"]["y"]) == current_workspace:
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if self.toplevel_buttons_by_wf_id[view["id"]].get_parent() is None:
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self.append(self.toplevel_buttons_by_wf_id[view["id"]])
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else:
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if self.toplevel_buttons_by_wf_id[view["id"]].get_parent() is self:
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# Remove out-of-workspace window
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self.remove(self.toplevel_buttons_by_wf_id[view["id"]])
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case "wset-workspace-changed":
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output_name = self.get_root().monitor_name
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if message["wset-data"]["output-name"] == output_name:
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# It has changed on this monitor; refresh the window list
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self.filter_to_wf_workspace()
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except Exception as e:
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print("Error reading Wayfire event:", e)
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return True
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def drop_button(self, drop_target: Gtk.DropTarget, value: int, x: float, y: float):
401
button: WindowButton = self.get_root().get_application().drags.pop(value)
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if button.get_parent() is not self:
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# Prevent dropping a button from another window list
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return False
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self.remove(button)
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# Find the position where to insert the applet
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# Probably we could use the assumption that buttons are homogeneous here for efficiency
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child = self.get_first_child()
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while child:
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allocation = child.get_allocation()
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child_x, child_y = self.translate_coordinates(self, 0, 0)
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if self.get_orientation() == Gtk.Orientation.HORIZONTAL:
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midpoint = child_x + allocation.width / 2
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if x < midpoint:
416
button.insert_before(self, child)
417
break
418
elif self.get_orientation() == Gtk.Orientation.VERTICAL:
419
midpoint = child_y + allocation.height / 2
420
if y < midpoint:
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button.insert_before(self, child)
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break
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child = child.get_next_sibling()
424
else:
425
self.append(button)
426
button.show()
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self.set_all_rectangles()
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return True
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def filter_to_wf_workspace(self):
432
if not self.show_only_this_wf_workspace:
433
return
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output = self.get_wf_output_by_name(self.get_root().monitor_name)
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for wf_id, button in self.toplevel_buttons_by_wf_id.items():
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view = self.wf_socket.get_view(wf_id)
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mid_x = view["geometry"]["x"] + view["geometry"]["width"] / 2
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mid_y = view["geometry"]["y"] + view["geometry"]["height"] / 2
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output_width = output["geometry"]["width"]
441
output_height = output["geometry"]["height"]
442
if 0 <= mid_x < output_width and 0 <= mid_y < output_height:
443
# It is in this workspace; keep it
444
if button.get_parent() is None:
445
self.append(button)
446
else:
447
# Remove it from this window list
448
if button.get_parent() is self:
449
self.remove(button)
450
def get_wl_resources(self, widget):
452
ctypes.pythonapi.PyCapsule_GetPointer.restype = ctypes.c_void_p
453
ctypes.pythonapi.PyCapsule_GetPointer.argtypes = (ctypes.py_object,)
454
self.display = Display()
456
wl_display_ptr = gtk.gdk_wayland_display_get_wl_display(
457
ffi.cast("void *", ctypes.pythonapi.PyCapsule_GetPointer(self.get_root().get_native().get_display().__gpointer__, None)))
458
self.display._ptr = wl_display_ptr
459
self.event_queue = EventQueue(self.display)
460
# Intentionally commented: the display is already connected by GTK
462
# self.display.connect()
463
my_monitor = Gtk4LayerShell.get_monitor(self.get_root())
465
# Iterate through monitors and get their Wayland output (wl_output)
467
# This is a hack to ensure output_enter/leave is called for toplevels
468
for monitor in self.get_root().get_application().monitors:
469
wl_output = gtk.gdk_wayland_monitor_get_wl_output(ffi.cast("void *", ctypes.pythonapi.PyCapsule_GetPointer(monitor.__gpointer__, None)))
470
if wl_output and not monitor.output_proxy:
471
print("Create proxy")
472
output_proxy = WlOutputProxy(wl_output, self.display)
473
output_proxy.interface.registry[output_proxy._ptr] = output_proxy
474
monitor.output_proxy = output_proxy
475
if monitor == my_monitor:
477
self.my_output = monitor.output_proxy
478
# End hack
479
self.manager = None
481
self.registry = self.display.get_registry()
482
self.registry.dispatcher["global"] = self.on_global
483
self.display.roundtrip()
484
if self.manager is None:
485
print("Could not load wf-window-list. Is foreign-toplevel protocol advertised by the compositor?")
486
print("(Wayfire requires enabling foreign-toplevel plugin)")
487
return
488
self.manager.dispatcher["toplevel"] = self.on_new_toplevel
489
self.manager.dispatcher["finished"] = lambda *a: print("Toplevel manager finished")
490
self.display.roundtrip()
491
fd = self.display.get_fd()
492
GLib.io_add_watch(fd, GLib.IO_IN, self.on_display_event)
493
if self.wf_socket is not None:
495
self.filter_to_wf_workspace()
496
def on_display_event(self, source, condition):
498
if condition & GLib.IO_IN:
499
self.display.dispatch(queue=self.event_queue)
500
return True
501
def on_global(self, registry, name, interface, version):
503
if interface == "zwlr_foreign_toplevel_manager_v1":
504
self.print_log("Interface registered")
505
self.manager = registry.bind(name, ZwlrForeignToplevelManagerV1, version)
506
elif interface == "wl_seat":
507
self.print_log("Seat found")
508
self.seat = registry.bind(name, WlSeat, version)
509
elif interface == "wl_compositor":
510
self.compositor = registry.bind(name, WlCompositor, version)
511
self.wl_surface_ptr = gtk.gdk_wayland_surface_get_wl_surface(
512
ffi.cast("void *", ctypes.pythonapi.PyCapsule_GetPointer(
513
self.get_root().get_native().get_surface().__gpointer__, None)))
514
def on_new_toplevel(self, manager: ZwlrForeignToplevelManagerV1,
516
handle: ZwlrForeignToplevelHandleV1):
517
handle.dispatcher["title"] = self.on_title_changed
518
handle.dispatcher["app_id"] = self.on_app_id_changed
519
handle.dispatcher["output_enter"] = self.on_output_entered
520
handle.dispatcher["output_leave"] = self.on_output_left
521
handle.dispatcher["state"] = self.on_state_changed
522
handle.dispatcher["closed"] = self.on_closed
523
def on_output_entered(self, handle, output):
525
button = WindowButton(handle, handle.title)
526
if self.show_only_this_output and output != self.my_output:
528
return
529
self.set_title(button, handle.title)
531
button.set_group(self.initial_button)
532
button.set_layout_manager(WindowButtonLayoutManager(self.window_button_options))
533
button.connect("clicked", self.on_button_click)
534
self.set_app_id(button, handle.app_id)
535
self.toplevel_buttons[handle] = button
536
self.append(button)
537
self.set_all_rectangles()
538
def on_output_left(self, handle, output):
540
if handle in self.toplevel_buttons:
541
button = self.toplevel_buttons[handle]
542
self.remove(button)
543
self.set_all_rectangles()
544
def set_title(self, button, title):
546
button.window_title = title
547
button.set_tooltip_text(title)
548
def on_title_changed(self, handle, title):
550
handle.title = title
551
if handle in self.toplevel_buttons:
552
button = self.toplevel_buttons[handle]
553
self.set_title(button, title)
554
def set_all_rectangles(self):
556
child = self.get_first_child()
557
while child is not None:
558
if isinstance(child, WindowButton):
559
surface = WlSurface()
560
surface._ptr = self.wl_surface_ptr
561
child.window_id.set_rectangle(surface, *get_widget_rect(child))
562
child = child.get_next_sibling()
564
def on_button_click(self, button: WindowButton):
566
# Set a rectangle for animation
567
surface = WlSurface()
568
surface._ptr = self.wl_surface_ptr
569
button.window_id.set_rectangle(surface, *get_widget_rect(button))
570
if button.window_state.focused:
571
# Already pressed in, so minimise the focused window
572
button.window_id.set_minimized()
573
else:
574
button.window_id.unset_minimized()
575
button.window_id.activate(self.seat)
576
def on_state_changed(self, handle, states):
578
if handle in self.toplevel_buttons:
579
state_info = WindowState.from_state_array(states)
580
button = self.toplevel_buttons[handle]
581
button.window_state = state_info
582
if state_info.focused:
583
button.set_active(True)
584
else:
585
self.initial_button.set_active(True)
586
self.set_all_rectangles()
588
def set_app_id(self, button, app_id):
590
button.set_icon_from_app_id(app_id)
591
app_ids = app_id.split()
592
for app_id in app_ids:
593
if app_id.startswith("wf-ipc-"):
594
self.toplevel_buttons_by_wf_id[int(app_id.removeprefix("wf-ipc-"))] = button
595
def on_app_id_changed(self, handle, app_id):
597
handle.app_id = app_id
598
if handle in self.toplevel_buttons:
599
button = self.toplevel_buttons[handle]
600
self.set_app_id(button, app_id)
601
def on_closed(self, handle):
603
button: WindowButton = self.toplevel_buttons[handle]
604
wf_id = button.wf_ipc_id
605
if handle in self.toplevel_buttons:
606
self.remove(self.toplevel_buttons[handle])
607
self.toplevel_buttons.pop(handle)
608
if wf_id in self.toplevel_buttons_by_wf_id:
609
self.toplevel_buttons_by_wf_id.pop(wf_id)
610
self.set_all_rectangles()
612
def make_context_menu(self):
614
menu = Gio.Menu()
615
menu.append(_("Window list _options"), "applet.options")
616
context_menu = Gtk.PopoverMenu.new_from_model(menu)
617
context_menu.set_has_arrow(False)
618
context_menu.set_parent(self)
619
context_menu.set_halign(Gtk.Align.START)
620
context_menu.set_flags(Gtk.PopoverMenuFlags.NESTED)
621
return context_menu
622
def show_context_menu(self, gesture, n_presses, x, y):
624
rect = Gdk.Rectangle()
625
rect.x = int(x)
626
rect.y = int(y)
627
rect.width = 1
628
rect.height = 1
629
self.context_menu.set_pointing_to(rect)
631
self.context_menu.popup()
632
def show_options(self, _0=None, _1=None):
634
if self.options_window is None:
635
self.options_window = WindowListOptions()
636
self.options_window.button_width_adjustment.set_value(self.window_button_options.max_width)
637
self.options_window.button_width_adjustment.connect("value-changed", self.update_button_options)
638
self.options_window.workspace_filter_checkbutton.set_active(self.show_only_this_wf_workspace)
639
self.options_window.workspace_filter_checkbutton.connect("toggled", self.update_workspace_filter)
640
def reset_window(*args):
642
self.options_window = None
643
self.options_window.connect("close-request", reset_window)
645
self.options_window.present()
646
def remove_workspace_filtering(self):
648
for button in self.toplevel_buttons.values():
649
if button.get_parent() is None:
650
self.append(button)
651
def update_workspace_filter(self, checkbutton):
653
self.show_only_this_wf_workspace = checkbutton.get_active()
654
if checkbutton.get_active():
655
self.filter_to_wf_workspace()
656
else:
657
self.remove_workspace_filtering()
658
def update_button_options(self, adjustment):
660
self.window_button_options.max_width = adjustment.get_value()
661
child: Gtk.Widget = self.get_first_child()
662
while child:
663
child.queue_allocate()
664
child.queue_resize()
665
child.queue_draw()
666
child = child.get_next_sibling()
667
self.emit("config-changed")
669
def get_config(self):
671
return {
672
"max_button_width": self.window_button_options.max_width,
673
"show_only_this_wf_workspace": self.show_only_this_wf_workspace,
674
"show_only_this_output": self.show_only_this_output,
675
}
676
def output_changed(self):
678
self.get_wl_resources()
679
def make_draggable(self):
681
for button in self.toplevel_buttons.values():
682
button.remove_controller(button.drag_source)
683
button.set_sensitive(False)
684
def restore_drag(self):
686
for button in self.toplevel_buttons.values():
687
button.add_controller(button.drag_source)
688
button.set_sensitive(True)
689