/usr/share/font-manager/ui/custom.py is in font-manager 0.5.7-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Custom user interface elements.
"""
# Font Manager, a font management application for the GNOME desktop
#
# Copyright (C) 2009, 2010 Jerry Casiano
#
# 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 3 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:
#
# Free Software Foundation, Inc.
# 51 Franklin Street, Fifth Floor
# Boston, MA 02110-1301, USA.
# Disable warnings related to missing docstrings, for now...
# pylint: disable-msg=C0111
import gtk
import gobject
import colorsys
import UserDict
class ColorParse(object):
"""
Taken from Project Hamster by Toms Baugis
"""
@staticmethod
def _parse(color):
"""
Parse color into rgb values.
"""
assert color is not None
if isinstance(color, (str, unicode)):
color = gtk.gdk.Color(color)
if isinstance(color, gtk.gdk.Color):
color = [color.red / 65535.0, color.green / 65535.0,
color.blue / 65535.0]
else:
# otherwise we assume we have color components in 0..255 range
if color[0] > 1 or color[1] > 1 or color[2] > 1:
color = [c / 255.0 for c in color]
return color
def rgb(self, color):
return [c * 255 for c in self._parse(color)]
def is_light(self, color):
"""
Determine if given color is light or dark.
"""
return colorsys.rgb_to_hls(*self.rgb(color))[1] > 150
def darker(self, color, step):
"""
Return color darkened by step (where step is in range 0..255)
"""
hls = colorsys.rgb_to_hls(*self.rgb(color))
return colorsys.hls_to_rgb(hls[0], hls[1] - step, hls[2])
class CairoColors(UserDict.UserDict):
"""
This class takes all the colors associated with a widget and tranforms them
into rgb values. The result is a dictionary which mimics gtk.Style, but only
contains color values in a format suitable for use with Cairo.
"""
_styles = ( "fg", "bg", "light", "dark", "mid", "text", "base", "text_aa")
_states = ( gtk.STATE_NORMAL, gtk.STATE_ACTIVE, gtk.STATE_PRELIGHT,
gtk.STATE_SELECTED, gtk.STATE_INSENSITIVE )
def __init__(self, widget):
UserDict.UserDict.__init__(self)
self.style = widget.get_style().copy()
self.data = {}
self._get_colors()
@staticmethod
def _color_to_cairo_rgb(color):
return color.red/65535.0, color.green/65535.0, color.blue/65535.0
def _get_colors(self):
for style in self._styles:
colors = {}
original_colors = getattr(self.style, style, None)
if original_colors:
for state in self._states:
color = original_colors[state]
colors[state] = self._color_to_cairo_rgb(color)
self.data[style] = colors
return
# Disable warnings related to invalid names
# pylint: disable-msg=C0103
class CellRendererTotal(gtk.CellRendererText):
"""
A custom version of gtk.CellRendererText that displays a pill-shaped
count at the right end of the cell.
If using markup, the label column should be the same as the markup column.
"""
__gproperties__ = {
'label' : (gobject.TYPE_STRING,
'Label',
'Label to be displayed',
None,
gobject.PARAM_READWRITE),
'count' : (gobject.TYPE_STRING,
'Count',
'Count to be displayed',
None,
gobject.PARAM_READWRITE),
'show-count': (gobject.TYPE_BOOLEAN,
'Display count',
'Whether to display count or not',
True,
gobject.PARAM_READWRITE),
'radius': (gobject.TYPE_INT,
'"Pill" radius',
'"Pill" radius',
0,
24,
12,
gobject.PARAM_READWRITE)
}
def __init__(self):
gtk.CellRendererText.__init__(self)
self.colors = None
setattr(self, 'label', None)
setattr(self, 'count', None)
setattr(self, 'show-count', True)
setattr(self, 'radius', 12)
def do_set_property(self, pspec, value):
setattr(self, pspec.name, value)
def do_get_property(self, pspec):
return getattr(self, pspec.name)
def do_render(self, *args):
"""
window, widget, background_area, cell_area, expose_area, flags
"""
widget_state = self._get_state(args)
style = args[1].get_style().copy()
self.colors = ColorParse()
theme = CairoColors(args[1])
if widget_state == gtk.STATE_SELECTED:
text = theme['text'][gtk.STATE_SELECTED]
pill = theme['dark'][gtk.STATE_SELECTED]
if not self.colors.is_light(text):
# If selected text is dark it's likely the pill itself
# is also dark, so lighten it.
pill = self.colors.darker(pill, -50)
else:
text = theme['text'][gtk.STATE_NORMAL]
pill = theme['bg'][gtk.STATE_PRELIGHT]
context = args[0].cairo_create()
self._draw_text(context, style, text, args)
if self.get_property('count') and self.get_property('show-count'):
self._draw_count(context, style, widget_state, text, pill, args)
return
def _draw_count(self, context, style, state, text, pill, args):
cell_x, cell_y, cell_w, cell_h = args[3]
layout = context.create_layout()
layout.set_font_description(style.font_desc)
count = self.get_property('count')
markup = '<span size="small" weight="heavy">{0}</span>'.format(count)
layout.set_markup(markup)
layout_w, layout_h = layout.get_pixel_size()
center_h = cell_y + ((cell_h - layout_h) / 2)
if state == gtk.STATE_SELECTED:
context.set_source_rgba(pill[0], pill[1], pill[2], 0.25)
elif not self.colors.is_light(pill):
context.set_source_rgba(pill[0], pill[1], pill[2], 0.15)
else:
context.set_source_rgba(pill[0], pill[1], pill[2], 0.50)
self._draw_pill(context,
cell_x + (cell_w - (layout_w + 20)),
cell_y, layout_w + 20, cell_h)
context.set_source_rgba(text[0], text[1], text[2], 1)
center_w = cell_x + ((cell_w - layout_w) - 10)
context.move_to(center_w, center_h)
context.show_layout(layout)
return
def _draw_text(self, context, style, text, args):
markup = self.get_property('label')
if not markup:
markup = self.get_property('text')
cell_x, cell_y, cell_w, cell_h = args[3]
layout = context.create_layout()
layout.set_font_description(style.font_desc)
layout.set_markup(markup)
layout_w, layout_h = layout.get_pixel_size()
context.set_source_rgba(text[0], text[1], text[2], 1)
center_h = cell_y + ((cell_h - layout_h) / 2)
context.move_to(cell_x + self.get_property('xpad'), center_h)
context.show_layout(layout)
return
def _draw_pill(self, context, x, y, w, h):
pad = self.get_property('ypad')
radius = self.get_property('radius')
context.move_to(x + radius, y + pad)
context.line_to(x + (w - radius), y + pad)
context.curve_to(x + w, y, x + w , y + h, x + (w - radius), y + h - pad)
context.line_to(x + radius, y + h - pad)
context.curve_to(x, y + h, x , y, x + radius, y + pad)
context.fill()
return
@staticmethod
def _get_editable_state(args):
x, y = args[1].widget_to_tree_coords(args[3].x, args[3].y)
path = args[1].get_path_at_pos(x, y)
selected_paths = args[1].get_selection().get_selected_rows()[1]
if path and selected_paths:
if path[0] == selected_paths[0]:
return gtk.STATE_SELECTED
else:
return gtk.STATE_NORMAL
return None
def _get_state(self, args):
"""
window, widget, background_area, cell_area, expose_area, flags
"""
# FIXME
# This is fugly, I'm probably just missing something obvious...
# But selected state for editable cells is very flaky...
if self.get_property('editable'):
state = self._get_editable_state(args)
if state is not None:
return state
if args[5] == gtk.CELL_RENDERER_SELECTED:
return gtk.STATE_SELECTED
elif args[5] == gtk.CELL_RENDERER_SELECTED | gtk.CELL_RENDERER_PRELIT:
return gtk.STATE_SELECTED
else:
return gtk.STATE_NORMAL
gobject.type_register(CellRendererTotal)
# Enable warnings related to invalid names
# pylint: enable-msg=C0103
|