/usr/share/avant-window-navigator/applets/cairo-clock/analogclock.py is in awn-applet-cairo-clock 0.4.1~bzr1507-0ubuntu7.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 | # Copyright (C) 2008 - 2010 onox <denkpadje@gmail.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, version 2 of the License.
#
# 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, see <http://www.gnu.org/licenses/>.
import math
import os
import cairo
import awn
awn.check_dependencies(globals(), "rsvg")
cairo_clock_themes_dir = "/usr/share/cairo-clock/themes"
default_themes_dir = os.path.join(os.path.dirname(__file__), "themes")
class AnalogClockThemeProvider:
"""Provides handles of SVG files that are part of the theme.
The librsvg handles can be used to be rendered to a C{cairo.Context}.
"""
def __init__(self, theme_name):
"""Load the necessary SVG files of the specified theme.
"""
self.__theme_name = theme_name
theme = self.__get_theme_dir(theme_name)
get_theme = lambda name: rsvg.Handle(os.path.join(theme, name))
# Background
self.drop_shadow = get_theme('clock-drop-shadow.svg')
self.face = get_theme('clock-face.svg')
self.marks = get_theme('clock-marks.svg')
# Foreground
self.face_shadow = get_theme('clock-face-shadow.svg')
self.glass = get_theme('clock-glass.svg')
self.frame = get_theme('clock-frame.svg')
# Shadows of hands
self.hour_hand_shadow = get_theme('clock-hour-hand-shadow.svg')
self.minute_hand_shadow = get_theme('clock-minute-hand-shadow.svg')
self.second_hand_shadow = get_theme('clock-second-hand-shadow.svg')
# Hands
self.hour_hand = get_theme('clock-hour-hand.svg')
self.minute_hand = get_theme('clock-minute-hand.svg')
self.second_hand = get_theme('clock-second-hand.svg')
def __get_theme_dir(self, theme):
theme_dirs = (cairo_clock_themes_dir, default_themes_dir)
for theme_dir in theme_dirs:
path = os.path.join(theme_dir, theme)
if os.path.isdir(path):
return path
raise RuntimeError("Did not find path to theme '" + theme + "'")
def get_name(self):
return self.__theme_name
class AnalogClock:
"""Used to draw a clock to a C{cairo.Context} using pre-rendered
Cairo surfaces of the background and foreground of the analog clock.
Having pre-rendered the background and foreground means those surfaces
don't have to be rendered everytime a clock is drawn, saving CPU cycles.
"""
def __init__(self, theme_provider, size):
"""Given a size, create a C{AnalogClock} using the theme
provided by given provider.
The base analog clock will contain a background and foreground
Cairo surface that has been constructed using this theme and size.
"""
self.__theme = theme_provider
source_surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, size, size)
self.__background_surface, background_context = self.__create_scaled_surface(source_surface, size)
# Draw the background of the clock
self.__theme.drop_shadow.render_cairo(background_context)
self.__theme.face.render_cairo(background_context)
self.__theme.marks.render_cairo(background_context)
self.__foreground_surface, foreground_context = self.__create_scaled_surface(source_surface, size)
# Draw the foreground of the clock
self.__theme.face_shadow.render_cairo(foreground_context)
self.__theme.glass.render_cairo(foreground_context)
self.__theme.frame.render_cairo(foreground_context)
del source_surface
def __create_scaled_surface(self, source_surface, size):
surface = source_surface.create_similar(cairo.CONTENT_COLOR_ALPHA, size, size)
context = cairo.Context(surface)
svg_width, svg_height = map(float, self.__theme.face.get_dimension_data()[:2])
context.scale(size / svg_width, size / svg_height)
return surface, context
def draw_clock(self, context, size, hours, minutes, seconds):
svg_width, svg_height = map(float, self.__theme.face.get_dimension_data()[:2])
context.set_operator(cairo.OPERATOR_OVER)
# Draw the background of the clock
context.set_source_surface(self.__background_surface)
context.paint()
# Scale hands (after painting the background to avoid messing it up)
context.scale(size / svg_width, size / svg_height)
context.save()
context.translate(svg_width / 2, svg_height / 2)
# Draw the hour hand
context.save()
context.rotate((360/12) * (hours+9+(minutes/60.0)) * (math.pi/180))
self.__theme.hour_hand_shadow.render_cairo(context)
self.__theme.hour_hand.render_cairo(context)
context.restore()
# Draw the minute hand
context.save()
context.rotate((360/60) * (minutes+45) * (math.pi/180))
self.__theme.minute_hand_shadow.render_cairo(context)
self.__theme.minute_hand.render_cairo(context)
context.restore()
# Draw the second hand if configured to do so
if seconds is not None:
context.save()
context.rotate((360/60) * (seconds+45) * (math.pi/180))
self.__theme.second_hand_shadow.render_cairo(context)
self.__theme.second_hand.render_cairo(context)
context.restore()
context.restore()
# Don't scale to avoid messing up the foreground
context.scale(svg_width / size, svg_height / size)
# Draw foreground of the clock
context.set_source_surface(self.__foreground_surface)
context.paint()
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