120 lines
4.7 KiB
Python
120 lines
4.7 KiB
Python
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# import wx.lib.wxcairo
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# import math
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import msspecgui
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from msspecgui import scenegraph2d
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from .widget import Widget
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# from msspecgui import datafloweditor
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# from numpy.distutils.misc_util import cxx_ext_match
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class OperatorWidget(Widget):
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'''
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The widget representing a node in the dataflow
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'''
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_g_last_id = 0
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def __init__(self, operator, data_flow_view):
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"""
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:param operator: the dataflow operator that this widget graphically represents
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:type operator: msspecgui.dataflow.Operator
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:param data_flow_view: the dataflowview to which this operator belongs
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:type data_flow_view: msspecgui.datafloweditor.DataflowView
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"""
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super(OperatorWidget, self).__init__(data_flow_view)
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self._operator = operator
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self._id = OperatorWidget.get_new_id()
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self.is_selected = False
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self.widget_background = None
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self.main_shape_node = scenegraph2d.Group()
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self.plug_to_widget = {} # an associative array that gives the widget associated to each plug name
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for side in ['input', 'output']:
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plugs = {'input': self._operator.get_input_plugs(),
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'output': self._operator.get_output_plugs()}[side]
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# plug_index = 0
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for plug in plugs:
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if plug.is_pluggable:
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plug_widget = msspecgui.datafloweditor.PlugWidget(plug, self, data_flow_view)
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self.plug_to_widget[plug.name] = plug_widget
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# plug_index += 1
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@classmethod
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def get_new_id(cls):
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OperatorWidget._g_last_id += 1
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return OperatorWidget._g_last_id
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def get_id(self):
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return self._id
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@property
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def operator(self):
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return self._operator
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def update_appearance(self):
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for plug_widget in self.plug_to_widget.itervalues():
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plug_widget.update_appearance(mouse_is_above=False) # FIXME : handle the case where the mouse is over the plug widget
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def get_plug_widget(self, plug):
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"""
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Returns the plug widget associated with the given plug
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:type plug: Plug
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:rtype: PlugWidget
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"""
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plug_widget = self.plug_to_widget[plug.name]
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return plug_widget
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def set_selected_state(self, is_selected):
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self.is_selected = is_selected
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self.widget_background.fill = {False: scenegraph2d.Color(128, 128, 128), True: scenegraph2d.Color(192, 192, 128)}[self.is_selected]
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def set_position(self, x, y):
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self.main_shape_node.parent.transform = [msspecgui.scenegraph2d.Translate(x, y)]
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assert self.operator is not None
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for wire in self.operator.wires:
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if wire in self._data_flow_view.wire_to_widget: # while load the dataflow, wires are not guaranteed to have a widget yet
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wire_widget = self._data_flow_view.wire_to_widget[wire]
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wire_widget.update_position()
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def render_to_scene_graph(self, scenegraph_group):
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"""
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:param scenegraph_group: the group node that contains the drawing of this element
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:type scenegraph_group: scenegraph.Group
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"""
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rect = scenegraph2d.Rectangle()
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rect.width = 70.0
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rect.height = 70.0
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rect.x = -35.0
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rect.y = -35.0
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rect.fill = scenegraph2d.Color(128, 128, 128)
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self.widget_background = rect
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self.main_shape_node.add_child(rect)
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title = "%s (%d)" % (self._operator.creator.get_operator_type_id().split('.')[-1], self.get_id())
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# import my.source.module
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# c = my.source.module.Color()
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title_text = scenegraph2d.Text(title)
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title_text.fill = scenegraph2d.Color.black
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title_text.text_anchor = "middle"
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self.main_shape_node.add_child(title_text)
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for side in ['input', 'output']:
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(cx, plugs) = {'input': (-25.0, self._operator.get_input_plugs()),
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'output': (25.0, self._operator.get_output_plugs())}[side]
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plug_index = 0
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for p in plugs:
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if p.is_pluggable:
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plug_group = scenegraph2d.Group()
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plug_group.x = cx
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plug_group.y = -25.0 + 10.0 * plug_index
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self.main_shape_node.add_child(plug_group)
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plug_widget = self.plug_to_widget[p.name]
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plug_widget.render_to_scene_graph(plug_group)
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plug_index += 1
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self.scenegraph_group = scenegraph_group
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self.scenegraph_group.add_child(self.main_shape_node)
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def remove_from_scene_graph(self):
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parent = self.main_shape_node.parent
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parent.remove_child(self.main_shape_node)
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