121 lines
3.9 KiB
Python
121 lines
3.9 KiB
Python
from PandaObject import *
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from Tkinter import *
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from Tree import *
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import Pmw
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class SceneGraphExplorer(Pmw.MegaWidget):
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"Graphical display of a scene graph"
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def __init__(self, root = render, parent = None, **kw):
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# Define the megawidget options.
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optiondefs = (
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('menuItems', ['Select'], None),
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)
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self.defineoptions(kw, optiondefs)
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# Initialise superclass
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Pmw.MegaWidget.__init__(self, parent)
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# Initialize some class variables
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self.root = root
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# Create the components.
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# Setup up container
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interior = self.interior()
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interior.configure(relief = GROOVE, borderwidth = 2)
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# Create a label and an entry
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self._scrolledCanvas = self.createcomponent(
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'scrolledCanvas',
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(), None,
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Pmw.ScrolledCanvas, (interior,),
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hull_width = 200, hull_height = 400,
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usehullsize = 1)
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self._canvas = self._scrolledCanvas.component('canvas')
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self._canvas['scrollregion'] = ('0i', '0i', '2i', '4i')
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self._scrolledCanvas.resizescrollregion()
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self._scrolledCanvas.pack(padx = 5, pady = 5, expand=1, fill = BOTH)
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self._canvas.bind('<ButtonPress-2>', self.mouse2Down)
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self._canvas.bind('<B2-Motion>', self.mouse2Motion)
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self._canvas.bind('<Configure>',
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lambda e, sc = self._scrolledCanvas:
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sc.resizescrollregion())
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# Create the contents
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self._treeItem = SceneGraphExplorerItem(self.root)
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self._node = TreeNode(self._canvas, None, self._treeItem,
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self['menuItems'])
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self._node.expand()
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# Check keywords and initialise options based on input values.
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self.initialiseoptions(SceneGraphExplorer)
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def mouse2Down(self, event):
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self._width = 1.0 * self._canvas.winfo_width()
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self._height = 1.0 * self._canvas.winfo_height()
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xview = self._canvas.xview()
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yview = self._canvas.yview()
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self._left = xview[0]
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self._top = yview[0]
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self._dxview = xview[1] - xview[0]
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self._dyview = yview[1] - yview[0]
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self._2lx = event.x
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self._2ly = event.y
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def mouse2Motion(self,event):
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newx = self._left - ((event.x - self._2lx)/self._width) * self._dxview
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self._canvas.xview_moveto(newx)
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newy = self._top - ((event.y - self._2ly)/self._height) * self._dyview
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self._canvas.yview_moveto(newy)
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self._2lx = event.x
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self._2ly = event.y
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self._left = self._canvas.xview()[0]
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self._top = self._canvas.yview()[0]
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class SceneGraphExplorerItem(TreeItem):
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"""Example TreeItem subclass -- browse the file system."""
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def __init__(self, nodePath):
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self.nodePath = nodePath
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def GetText(self):
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type = self.nodePath.node().getType().getName()
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name = self.nodePath.getName()
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return type + " " + name
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def IsEditable(self):
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return issubclass(self.nodePath.node().__class__, NamedNode)
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def SetText(self, text):
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try:
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self.nodePath.node().setName(text)
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except AttributeError:
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pass
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def GetIconName(self):
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if not self.IsExpandable():
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return "sphere2" # XXX wish there was a "file" icon
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def IsExpandable(self):
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return self.nodePath.getNumChildren() != 0
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def GetSubList(self):
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sublist = []
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for nodePath in self.nodePath.getChildrenAsList():
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item = SceneGraphExplorerItem(nodePath)
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sublist.append(item)
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return sublist
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def OnSelect(self):
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messenger.send('SGEFlashNodePath', [self.nodePath])
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def MenuCommand(self, command):
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messenger.send('SGE' + command + 'NodePath', [self.nodePath])
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