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
|
# Copyright (C) 2006, Red Hat, Inc.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
import re
import gobject
import gtk
import hippo
import rsvg
import cairo
from sugar.graphics.iconcolor import IconColor
class _IconCache:
def __init__(self):
self._icons = {}
self._theme = gtk.icon_theme_get_default()
def _read_icon(self, filename, color):
icon_file = open(filename, 'r')
if color == None:
return rsvg.Handle(file=filename)
else:
data = icon_file.read()
icon_file.close()
fill = color.get_fill_color()
stroke = color.get_stroke_color()
entity = '<!ENTITY fill_color "%s">' % fill
data = re.sub('<!ENTITY fill_color .*>', entity, data)
entity = '<!ENTITY stroke_color "%s">' % stroke
data = re.sub('<!ENTITY stroke_color .*>', entity, data)
return rsvg.Handle(data=data)
def get_handle(self, name, color, size):
info = self._theme.lookup_icon(name, int(size), 0)
if color:
key = (info.get_filename(), color.to_string())
else:
key = info.get_filename()
if self._icons.has_key(key):
icon = self._icons[key]
else:
icon = self._read_icon(info.get_filename(), color)
self._icons[key] = icon
return icon
class CanvasIcon(hippo.CanvasBox, hippo.CanvasItem):
__gtype_name__ = 'CanvasIcon'
__gproperties__ = {
'icon-name': (str, None, None, None,
gobject.PARAM_READWRITE),
'color' : (object, None, None,
gobject.PARAM_READWRITE),
'size' : (int, None, None,
0, 1024, 24,
gobject.PARAM_READWRITE)
}
_cache = _IconCache()
def __init__(self, **kwargs):
self._size = 24
self._color = None
self._icon_name = None
hippo.CanvasBox.__init__(self, **kwargs)
self._buffer = None
self.connect('button-press-event', self._button_press_event_cb)
def do_set_property(self, pspec, value):
if pspec.name == 'icon-name':
self._icon_name = value
self._buffer = None
self.emit_paint_needed(0, 0, -1, -1)
elif pspec.name == 'color':
self._buffer = None
self._color = value
self.emit_paint_needed(0, 0, -1, -1)
elif pspec.name == 'size':
self._buffer = None
self._size = value
self.emit_request_changed()
def do_get_property(self, pspec):
if pspec.name == 'size':
return self._size
elif pspec.name == 'icon-name':
return self._icon_name
elif pspec.name == 'color':
return self._color
def _get_buffer(self, cr, handle, size):
if self._buffer == None:
target = cr.get_target()
surface = target.create_similar(cairo.CONTENT_COLOR_ALPHA,
int(size) + 1, int(size) + 1)
dimensions = handle.get_dimension_data()
scale = float(size) / float(dimensions[0])
ctx = cairo.Context(surface)
ctx.scale(scale, scale)
handle.render_cairo(ctx)
del ctx
self._buffer = surface
self._buffer_scale = scale
return self._buffer
def do_paint_below_children(self, cr, damaged_box):
icon_name = self._icon_name
if icon_name == None:
icon_name = 'stock-missing'
handle = CanvasIcon._cache.get_handle(
icon_name, self._color, self._size)
buf = self._get_buffer(cr, handle, self._size)
[width, height] = self.get_allocation()
x = (width - self._size) / 2
y = (height - self._size) / 2
cr.set_source_surface(buf, x, y)
cr.paint()
def do_get_width_request(self):
return self._size
def do_get_height_request(self, for_width):
return self._size
def _button_press_event_cb(self, item, event):
item.emit_activated()
|
