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@ -679,6 +679,71 @@ class EventIcon(Gtk.EventBox):
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self.set_palette(Palette(text))
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class CanvasIcon(EventIcon):
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"""
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An EventIcon with active and prelight states, and a styleable
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background.
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If the icon pops up a palette, the prelight state is set until the
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palette pops down.
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"""
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__gtype_name__ = 'SugarCanvasIcon'
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def __init__(self, **kwargs):
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EventIcon.__init__(self, **kwargs)
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self._in_prelight_state = False
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self.connect('enter-notify-event', self.__enter_notify_event_cb)
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self.connect('leave-notify-event', self.__leave_notify_event_cb)
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self.connect('button-press-event', self.__button_press_event_cb)
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self.connect('button-release-event', self.__button_release_event_cb)
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def connect_to_palette_pop_events(self, palette):
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palette.connect('popup', self.__palette_popup_cb)
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palette.connect('popdown', self.__palette_popdown_cb)
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def do_draw(self, cr):
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"""Render a background that fits the allocated space."""
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allocation = self.get_allocation()
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context = self.get_style_context()
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Gtk.render_background(context, cr, 0, 0,
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allocation.width,
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allocation.height)
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EventIcon.do_draw(self, cr)
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def __enter_notify_event_cb(self, icon, event):
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self._in_prelight_state = True
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if self.get_state() != Gtk.StateFlags.ACTIVE:
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self.set_state(Gtk.StateFlags.PRELIGHT)
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def __leave_notify_event_cb(self, icon, event):
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if self.palette.is_up():
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return
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self._in_prelight_state = False
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if self.get_state() != Gtk.StateFlags.ACTIVE:
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self.set_state(False)
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def __button_press_event_cb(self, icon, event):
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self.set_state(Gtk.StateFlags.ACTIVE)
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def __button_release_event_cb(self, icon, event):
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if self._in_prelight_state:
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self.set_state(Gtk.StateFlags.PRELIGHT)
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else:
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self.set_state(False)
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def __palette_popup_cb(self, palette):
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self.set_state(Gtk.StateFlags.PRELIGHT)
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def __palette_popdown_cb(self, palette):
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self.set_state(False)
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class CellRendererIcon(Gtk.CellRenderer):
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__gtype_name__ = 'SugarCellRendererIcon'
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