/usr/share/system-config-printer/gtkinklevel.py is in system-config-printer-gnome 1.5.7+20160212-0ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 | #!/usr/bin/python3
## Copyright (C) 2009, 2010, 2012 Red Hat, Inc.
## Authors:
## Tim Waugh <twaugh@redhat.com>
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2 of the License, 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 License for more details.
## You should have received a copy of the GNU General Public License
## along with this program; if not, write to the Free Software
## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
from gi.repository import Gdk
from gi.repository import Gtk
import cairo
class GtkInkLevel (Gtk.DrawingArea):
def __init__ (self, color, level=0):
Gtk.DrawingArea.__init__ (self)
self.connect ('draw', self.draw)
self._level = level
self._color = None
if color:
self._color = Gdk.color_parse (color)
if not self._color:
self._color = Gdk.color_parse ('#cccccc')
self.set_size_request (30, 45)
def set_level (self, level):
self._level = level
self.queue_resize ()
def get_level (self):
return self._level
def draw (self, widget, ctx):
w = widget.get_allocated_width ()
h = widget.get_allocated_height ()
ratio = 1.0 * h / w
if ratio < 1.5:
w = h * 2.0 / 3.0
else:
h = w * 3.0 / 2.0
thickness = 1
ctx.translate (thickness, thickness)
ctx.scale (w - 2 * thickness, h - 2 * thickness)
thickness = max (ctx.device_to_user_distance (thickness, thickness))
r = self._color.red / 65535.0
g = self._color.green / 65535.0
b = self._color.blue / 65535.0
fill_point = self._level / 100.0
ctx.move_to (0.5, 0.0)
ctx.curve_to (0.5, 0.33, 1.0, 0.5, 1.0, 0.67)
ctx.curve_to (1.0, 0.85, 0.85, 1.0, 0.5, 1.0)
ctx.curve_to (0.15, 1.0, 0.0, 0.85, 0.0, 0.67)
ctx.curve_to (0.0, 0.5, 0.1, 0.2, 0.5, 0.0)
ctx.close_path ()
ctx.set_source_rgb (r, g, b)
ctx.set_line_width (thickness)
ctx.stroke_preserve ()
if fill_point > 0.0:
grad_width = 0.10
grad_start = fill_point - (grad_width / 2)
if grad_start < 0:
grad_start = 0
pat = cairo.LinearGradient (0, 1, 0, 0)
pat.add_color_stop_rgba (0, r, g, b, 1)
pat.add_color_stop_rgba ((self._level - 5) / 100.0, r, g, b, 1)
pat.add_color_stop_rgba ((self._level + 5)/ 100.0, 1, 1, 1, 1)
pat.add_color_stop_rgba (1.0, 1, 1, 1, 1)
ctx.set_source (pat)
ctx.fill ()
else:
ctx.set_source_rgb (1, 1, 1)
ctx.fill ()
ctx.set_line_width (thickness / 2)
ctx.move_to (0.5, 0.0)
ctx.line_to (0.5, 1.0)
ctx.set_source_rgb (r, g, b)
ctx.stroke ()
# 50% marker
ctx.move_to (0.4, 0.5)
ctx.line_to (0.6, 0.5)
ctx.set_source_rgb (r, g, b)
ctx.stroke ()
# 25% marker
ctx.move_to (0.45, 0.75)
ctx.line_to (0.55, 0.75)
ctx.set_source_rgb (r, g, b)
ctx.stroke ()
# 75% marker
ctx.move_to (0.45, 0.25)
ctx.line_to (0.55, 0.25)
ctx.set_source_rgb (r, g, b)
ctx.stroke ()
if __name__ == '__main__':
# Try it out.
from gi.repository import GLib
import time
def adjust_level (level):
Gdk.threads_enter ()
l = level.get_level ()
l += 1
if l > 100:
l = 0
level.set_level (l)
Gdk.threads_leave ()
return True
w = Gtk.Window ()
w.set_border_width (12)
vbox = Gtk.VBox (spacing=6)
w.add (vbox)
hbox = Gtk.HBox (spacing=6)
vbox.pack_start (hbox, False, False, 0)
klevel = GtkInkLevel ("black", level=100)
clevel = GtkInkLevel ("cyan", level=60)
mlevel = GtkInkLevel ("magenta", level=30)
ylevel = GtkInkLevel ("yellow", level=100)
hbox.pack_start (klevel, False, False, 0)
hbox.pack_start (clevel, False, False, 0)
hbox.pack_start (mlevel, False, False, 0)
hbox.pack_start (ylevel, False, False, 0)
GLib.timeout_add (10, adjust_level, klevel)
GLib.timeout_add (10, adjust_level, clevel)
GLib.timeout_add (10, adjust_level, mlevel)
GLib.timeout_add (10, adjust_level, ylevel)
w.show_all ()
w.connect ('delete_event', Gtk.main_quit)
Gdk.threads_init ()
Gtk.main ()
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