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