341 lines
No EOL
12 KiB
Python
341 lines
No EOL
12 KiB
Python
# 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 License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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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 License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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"""
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Overlay parent class. Helpful if we need more overlay
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types without copy-and-pasting too much code
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"""
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import sys
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import logging
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import gi
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import cairo
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import Xlib
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from Xlib.display import Display
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from Xlib import X, Xatom
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gi.require_version("Gtk", "3.0")
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# pylint: disable=wrong-import-position,wrong-import-order
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from gi.repository import Gtk, Gdk # nopep8
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try:
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gi.require_version('GtkLayerShell', '0.1')
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from gi.repository import GtkLayerShell
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except (ImportError, ValueError):
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pass
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log = logging.getLogger(__name__)
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class OverlayWindow(Gtk.Window):
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"""
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Overlay parent class. Helpful if we need more overlay
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types without copy-and-pasting too much code
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"""
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def detect_type(self):
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"""
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Helper function to determine if Wayland is being used and return the Window type needed
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"""
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window = Gtk.Window()
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screen = window.get_screen()
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screen_type = "%s" % (screen)
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self.is_wayland = False
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if "Wayland" in screen_type:
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self.is_wayland = True
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return Gtk.WindowType.TOPLEVEL
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return Gtk.WindowType.POPUP
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def __init__(self, discover, piggyback=None):
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Gtk.Window.__init__(self, type=self.detect_type())
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self.discover = discover
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screen = self.get_screen()
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self.compositing = False
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self.text_font = None
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self.text_size = None
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self.pos_x = None
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self.pos_y = None
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self.width = None
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self.height = None
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self.needsredraw = True
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self.hidden = False
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self.enabled = False
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self.set_size_request(50, 50)
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self.connect('draw', self.overlay_draw)
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# Set RGBA
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screen = self.get_screen()
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visual = screen.get_rgba_visual()
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if not self.get_display().supports_input_shapes():
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log.info(
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"Input shapes not available. Quitting")
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sys.exit(1)
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if visual:
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# Set the visual even if we can't use it right now
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self.set_visual(visual)
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if screen.is_composited():
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self.compositing = True
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self.set_app_paintable(True)
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self.set_untouchable()
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self.set_skip_pager_hint(True)
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self.set_skip_taskbar_hint(True)
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self.set_keep_above(True)
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self.set_decorated(True)
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self.set_accept_focus(False)
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self.set_wayland_state()
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if not piggyback:
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self.show_all()
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if discover.steamos:
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self.set_gamescope_xatom(1)
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self.monitor = 0
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self.align_right = True
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self.align_vert = 1
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self.floating = False
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self.force_xshape = False
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self.context = None
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self.autohide = False
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self.piggyback = None
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self.piggyback_parent = None
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if piggyback:
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self.set_piggyback(piggyback)
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def set_gamescope_xatom(self, enabled):
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display = Display()
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atom = display.intern_atom("GAMESCOPE_EXTERNAL_OVERLAY")
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opaq = display.intern_atom("_NET_WM_WINDOW_OPACITY")
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if self.get_toplevel().get_window():
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topw = display.create_resource_object(
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"window", self.get_toplevel().get_window().get_xid())
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topw.change_property(atom,
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Xatom.CARDINAL, 32,
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[enabled], X.PropModeReplace)
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log.info("Setting GAMESCOPE_EXTERNAL_OVERLAY to %s", enabled)
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display.sync()
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else:
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log.warn("Unable to set GAMESCOPE_EXTERNAL_OVERLAY")
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def set_wayland_state(self):
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"""
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If wayland is in use then attempt to set up a GtkLayerShell
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I have no idea how this should register a fail for Weston/Gnome
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"""
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if self.is_wayland:
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if not GtkLayerShell.is_supported():
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log.info(
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"GTK Layer Shell is not supported on this wayland compositor")
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log.info("Currently not possible: Gnome, Weston")
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sys.exit(0)
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GtkLayerShell.init_for_window(self)
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GtkLayerShell.set_layer(self, GtkLayerShell.Layer.OVERLAY)
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GtkLayerShell.set_anchor(self, GtkLayerShell.Edge.LEFT, True)
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GtkLayerShell.set_anchor(self, GtkLayerShell.Edge.RIGHT, True)
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GtkLayerShell.set_anchor(self, GtkLayerShell.Edge.BOTTOM, True)
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GtkLayerShell.set_anchor(self, GtkLayerShell.Edge.TOP, True)
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def set_piggyback(self, other_overlay):
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other_overlay.piggyback = self
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self.piggyback_parent = other_overlay
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def overlay_draw(self, _w, context, data=None):
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"""
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Draw overlay
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"""
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def set_font(self, font):
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"""
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Set the font used by the overlay
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"""
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self.text_font = font
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self.needsredraw = True
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def set_floating(self, floating, pos_x, pos_y, width, height):
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"""
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Set if the window is floating and what dimensions to use
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"""
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self.floating = floating
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self.pos_x = pos_x
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self.pos_y = pos_y
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self.width = width
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self.height = height
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self.force_location()
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def set_untouchable(self):
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"""
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Create a custom input shape and tell it that all of the window is a cut-out
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This allows us to have a window above everything but that never gets clicked on
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"""
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(width, height) = self.get_size()
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surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
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surface_ctx = cairo.Context(surface)
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surface_ctx.set_source_rgba(0.0, 0.0, 0.0, 0.0)
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surface_ctx.set_operator(cairo.OPERATOR_SOURCE)
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surface_ctx.paint()
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reg = Gdk.cairo_region_create_from_surface(surface)
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self.input_shape_combine_region(reg)
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def unset_shape(self):
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"""
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Remove XShape (not input shape)
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"""
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self.get_window().shape_combine_region(None, 0, 0)
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def force_location(self):
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"""
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On X11 enforce the location and sane defaults
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On Wayland just store for later
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On Gamescope enforce size of display but only if it's the primary overlay
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"""
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if self.discover.steamos and not self.piggyback_parent:
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display = Gdk.Display.get_default()
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if "get_monitor" in dir(display):
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monitor = display.get_monitor(self.monitor)
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geometry = monitor.get_geometry()
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scale_factor = monitor.get_scale_factor()
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width = geometry.width
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height = geometry.height
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self.resize(width, height)
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self.needsredraw = True
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return
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if not self.is_wayland:
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self.set_decorated(False)
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self.set_keep_above(True)
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display = Gdk.Display.get_default()
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if "get_monitor" in dir(display):
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monitor = display.get_monitor(self.monitor)
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geometry = monitor.get_geometry()
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scale_factor = monitor.get_scale_factor()
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if not self.floating:
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width = geometry.width
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height = geometry.height
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pos_x = geometry.x
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pos_y = geometry.y
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self.resize(width, height)
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self.move(pos_x, pos_y)
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else:
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self.move(self.pos_x, self.pos_y)
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self.resize(self.width, self.height)
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else:
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if self.floating:
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self.move(self.pos_x, self.pos_y)
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self.resize(self.width, self.height)
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if not self.floating:
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(width, height) = self.get_size()
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self.width = width
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self.height = height
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self.needsredraw = True
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def redraw(self):
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"""
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Request a redraw.
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If we're using XShape (optionally or forcibly) then render the image into the shape
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so that we only cut out clear sections
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"""
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self.needsredraw = False
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gdkwin = self.get_window()
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if self.piggyback_parent:
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self.piggyback_parent.redraw()
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return
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if not self.floating:
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(width, height) = self.get_size()
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self.width = width
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self.height = height
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if gdkwin:
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if not self.compositing or self.force_xshape:
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(width, height) = self.get_size()
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surface = cairo.ImageSurface(
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cairo.FORMAT_ARGB32, width, height)
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surface_ctx = cairo.Context(surface)
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self.overlay_draw(None, surface_ctx)
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reg = Gdk.cairo_region_create_from_surface(surface)
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gdkwin.shape_combine_region(reg, 0, 0)
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else:
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gdkwin.shape_combine_region(None, 0, 0)
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self.queue_draw()
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def set_hidden(self, hidden):
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self.hidden = hidden
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self.set_enabled(self.enabled)
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def set_monitor(self, idx=None, mon=None):
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"""
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Set the monitor this overlay should display on.
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"""
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self.monitor = idx
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if self.is_wayland:
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if mon:
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GtkLayerShell.set_monitor(self, mon)
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self.set_untouchable()
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self.force_location()
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self.needsredraw = True
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def set_align_x(self, align_right):
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"""
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Set the alignment (True for right, False for left)
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"""
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self.align_right = align_right
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self.force_location()
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self.needsredraw = True
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def set_align_y(self, align_vert):
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"""
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Set the veritcal alignment
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"""
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self.align_vert = align_vert
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self.force_location()
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self.needsredraw = True
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def col(self, col, alpha=1.0):
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"""
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Convenience function to set the cairo context next colour
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"""
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self.context.set_source_rgba(col[0], col[1], col[2], col[3] * alpha)
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def set_force_xshape(self, force):
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"""
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Set if XShape should be forced
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"""
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self.force_xshape = force
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if self.is_wayland or self.discover.steamos:
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# Wayland and XShape are a bad idea unless you're a fan on artifacts
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self.force_xshape = False
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def set_enabled(self, enabled):
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"""
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Set if this overlay should be visible
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"""
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self.enabled = enabled
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if enabled and not self.hidden and not self.piggyback_parent:
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self.show_all()
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self.set_untouchable()
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if self.discover.steamos:
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self.set_gamescope_xatom(1)
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else:
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if self.discover.steamos:
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self.set_gamescope_xatom(0)
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self.hide()
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def set_hide_on_mouseover(self, hide):
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"""
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Set Mouseover hide
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"""
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self.autohide = hide
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def set_task(self, visible):
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self.set_skip_pager_hint(not visible)
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self.set_skip_taskbar_hint(not visible)
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def check_composite(self):
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screen = self.get_screen()
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if not self.compositing == screen.is_composited():
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self.needsredraw = True |