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import re
import gobject
import gtk
import goocanvas
import rsvg
import cairo
from sugar.util import GObjectSingletonMeta
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 IconView(goocanvas.ItemViewSimple, goocanvas.ItemView):
__gtype_name__ = 'IconView'
_cache = _IconCache()
def __init__(self, canvas_view, parent_view, item):
goocanvas.ItemViewSimple.__init__(self)
self.parent_view = parent_view
self.canvas_view = canvas_view
self.item = item
self._buffer = None
self._buffer_size = 0.0
item.connect('changed', goocanvas.item_view_simple_item_changed, self)
def do_get_item_view_at(self, x, y, cr, is_pointer_event, parent_is_visible):
result = self
cr.save()
if self.item.transform != None:
cr.transform(self.item.transform)
if self.transform != None:
cr.transform(self.transform)
[user_x, user_y] = cr.device_to_user(x, y)
if user_x < self.item.x or \
user_x > self.item.x + self.item.size or \
user_y < self.item.y or \
user_y > self.item.y + self.item.size:
result = None
cr.restore()
return result
def do_update(self, entire_tree, cr):
if entire_tree or self.flags & goocanvas.ITEM_VIEW_NEED_UPDATE:
self.flags &= ~goocanvas.ITEM_VIEW_NEED_UPDATE
cr.save()
if self.item.transform != None:
cr.transform(self.item.transform)
if self.transform != None:
cr.transform(self.transform)
self.get_canvas_view().request_redraw(self.bounds)
bounds = goocanvas.Bounds()
bounds.x1 = self.item.x
bounds.y1 = self.item.y
bounds.x2 = self.item.x + self.item.size
bounds.y2 = self.item.y + self.item.size
self.item.user_bounds_to_device(cr, bounds)
self.bounds = bounds
self.get_canvas_view().request_redraw(self.bounds)
cr.restore()
return self.bounds
def _get_buffer(self, cr, handle, size):
if self._buffer and self._buffer_size != size:
del self._buffer
self._buffer = None
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(self, cr, bounds, scale):
icon_name = self.item.icon_name
if icon_name == None:
icon_name = 'stock-missing'
handle = IconView._cache.get_handle(
icon_name, self.item.color, self.item.size)
buf = self._get_buffer(cr, handle, self.item.size)
cr.save()
if self.item.transform != None:
cr.transform(self.item.transform)
if self.transform != None:
cr.transform(self.transform)
cr.translate(self.item.x, self.item.y)
cr.set_source_surface(buf, 0.0, 0.0)
cr.paint()
cr.restore()
return self.bounds
class IconItem(goocanvas.ItemSimple, goocanvas.Item):
__gsignals__ = {
'clicked': (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE, ([])),
'popup': (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE, ([int, int, int, int])),
'popdown': (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE, ([])),
}
__gproperties__ = {
'x' : (float, None, None, -10e6, 10e6, 0,
gobject.PARAM_READWRITE),
'y' : (float, None, None, -10e6, 10e6, 0,
gobject.PARAM_READWRITE),
'icon-name': (str, None, None, None,
gobject.PARAM_READWRITE),
'color' : (object, None, None,
gobject.PARAM_READWRITE),
'size' : (float, None, None,
0, 1024, 24,
gobject.PARAM_READWRITE)
}
def __init__(self, **kwargs):
self.x = 0.0
self.y = 0.0
self.size = 24
self.color = None
self.icon_name = None
goocanvas.ItemSimple.__init__(self, **kwargs)
def do_set_property(self, pspec, value):
recompute_bounds = False
if pspec.name == 'icon-name':
self.icon_name = value
elif pspec.name == 'color':
self.color = value
elif pspec.name == 'size':
self.size = value
recompute_bounds = True
elif pspec.name == 'x':
self.x = value
recompute_bounds = True
elif pspec.name == 'y':
self.y = value
recompute_bounds = True
self.emit('changed', recompute_bounds)
def do_get_property(self, pspec):
if pspec.name == 'x':
return self.x
elif pspec.name == 'y':
return self.y
elif pspec.name == 'size':
return self.size
elif pspec.name == 'icon-name':
return self.icon_name
elif pspec.name == 'color':
return self.color
def do_create_view(self, canvas, parent_view):
view = IconView(canvas, parent_view, self)
view.connect('button-press-event', self._button_press_cb)
return view
def get_size_request(self):
return [self.props.size, self.props.size]
def _button_press_cb(self, view, target, event):
self.emit('clicked')
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