import re import gobject import gtk import goocanvas import rsvg import cairo from sugar.util import GObjectSingletonMeta from sugar.canvas.IconColor import IconColor _ICON_SIZE = 48 class _IconCache: def __init__(self): self._icons = {} def _read_icon(self, name, color): theme = gtk.icon_theme_get_default() info = theme.lookup_icon(name, _ICON_SIZE, 0) icon_file = open(info.get_filename(), 'r') if color == None: return rsvg.Handle(file=info.get_filename()) else: data = icon_file.read() icon_file.close() fill = color.get_fill_color() stroke = color.get_stroke_color() style = '.fill {fill:%s;stroke:%s;}' % (fill, fill) data = re.sub('\.fill \{.*\}', style, data) style = '.shape {stroke:%s;fill:%s;}' % (stroke, stroke) data = re.sub('\.shape \{.*\}', style, data) style = '.shape-and-fill {fill:%s; stroke:%s;}' % (fill, stroke) data = re.sub('\.shape-and-fill \{.*\}', style, data) return rsvg.Handle(data=data) def get_handle(self, name, color): if color: key = (name, color.to_string()) else: key = name if self._icons.has_key(key): icon = self._icons[key] else: icon = self._read_icon(name, 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_scale = 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, scale): if self._buffer and self._buffer_scale != scale: del self._buffer self._buffer = None if self._buffer == None: size = int(_ICON_SIZE * scale) surface = cr.get_target().create_similar( cairo.CONTENT_COLOR_ALPHA, size, size) 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): scale_factor = float(self.item.size) / float(_ICON_SIZE) if scale_factor == 0.0: return icon_name = self.item.icon_name if icon_name == None: icon_name = 'stock-missing' handle = IconView._cache.get_handle(icon_name, self.item.color) buf = self._get_buffer(cr, handle, scale_factor) 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' : (int, 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 self._popdown_timeout = 0 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) view.connect('enter-notify-event', self._enter_notify_event_cb, canvas) view.connect('leave-notify-event', self._leave_notify_event_cb) return view def _button_press_cb(self, view, target, event): self.emit('clicked') def _start_popup_timeout(self): self._stop_popup_timeout() self._popdown_timeout = gobject.timeout_add(1000, self._popdown) def _stop_popup_timeout(self): if self._popdown_timeout > 0: gobject.source_remove(self._popdown_timeout) self._popdown_timeout = 0 def _enter_notify_event_cb(self, view, target, event, canvas): self._stop_popup_timeout() [x1, y1] = canvas.convert_to_pixels(view.get_bounds().x1, view.get_bounds().y1) [x2, y2] = canvas.convert_to_pixels(view.get_bounds().x2, view.get_bounds().y2) self.emit('popup', int(x1), int(y1), int(x2), int(y2)) def _popdown(self): self._popdown_timeout = 0 self.emit('popdown') return False def _leave_notify_event_cb(self, view, target, event): self._start_popup_timeout()