/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/tree.py
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revision 374 by jan, Mon Jan 27 14:20:02 2003 UTC revision 882 by jonathan, Fri May 9 16:34:28 2003 UTC
# Line 1  Line 1 
1  #! /usr/bin/python  #! /usr/bin/python
2  # Copyright (c) 2001, 2002 by Intevation GmbH  # Copyright (c) 2001, 2002, 2003 by Intevation GmbH
3  # Authors:  # Authors:
4  # Jan-Oliver Wagner <[email protected]>  # Jan-Oliver Wagner <[email protected]>
5  # Bernhard Herzog <[email protected]>  # Bernhard Herzog <[email protected]>
# Line 9  Line 9 
9    
10  __version__ = "$Revision$"  __version__ = "$Revision$"
11    
12  from types import StringType  from types import StringType, UnicodeType
13    
14  from wxPython.wx import *  from wxPython.wx import *
15    
16  from Thuban import _  from Thuban import _
17    from Thuban.UI.common import Color2wxColour
18    
19    from Thuban.Model.color import Color
20    
21  from Thuban.Model.messages import CHANGED  from Thuban.Model.messages import CHANGED
22  from Thuban.Model.layer import Layer  from Thuban.Model.layer import Layer
23  from Thuban.Model.map import Map  from Thuban.Model.map import Map
24    
25  from dialogs import NonModalDialog  from dialogs import NonModalDialog
26  from messages import SESSION_CHANGED, SELECTED_LAYER  from messages import SESSION_REPLACED, LAYER_SELECTED
27    
28    BMP_SIZE = 15
29    
30  class SessionTreeCtrl(wxTreeCtrl):  class SessionTreeCtrl(wxTreeCtrl):
31    
# Line 45  class SessionTreeCtrl(wxTreeCtrl): Line 49  class SessionTreeCtrl(wxTreeCtrl):
49            value of TreeInfo.            value of TreeInfo.
50      """      """
51    
52      def __init__(self, parent, ID, app):      def __init__(self, parent, ID, mainwindow, app):
53    
54          # Use the WANTS_CHARS style so the panel doesn't eat the Return key.          # Use the WANTS_CHARS style so the panel doesn't eat the Return key.
55          wxTreeCtrl.__init__(self, parent, ID)          wxTreeCtrl.__init__(self, parent, ID)
56    
57            self.mainwindow = mainwindow
58          self.app = app          self.app = app
59          # boolean to indicate that we manipulate the selection ourselves          # boolean to indicate that we manipulate the selection ourselves
60          # so that we can ignore the selection events generated          # so that we can ignore the selection events generated
# Line 57  class SessionTreeCtrl(wxTreeCtrl): Line 63  class SessionTreeCtrl(wxTreeCtrl):
63          # Dictionary mapping layer id's to tree items          # Dictionary mapping layer id's to tree items
64          self.layer_to_item = {}          self.layer_to_item = {}
65    
66          self.app.Subscribe(SESSION_CHANGED, self.session_changed)          self.app.Subscribe(SESSION_REPLACED, self.session_changed)
67          self.app.interactor.Subscribe(SELECTED_LAYER, self.layer_selected)          self.mainwindow.Subscribe(LAYER_SELECTED, self.layer_selected)
68    
69          # the session currently displayed in the tree          # the session currently displayed in the tree
70          self.session = None          self.session = None
71    
72    
73          # pretend the session has changed to build the initial tree          # pretend the session has changed to build the initial tree
74          self.session_changed()          self.session_changed()
75    
# Line 72  class SessionTreeCtrl(wxTreeCtrl): Line 79  class SessionTreeCtrl(wxTreeCtrl):
79          if self.session is not None:          if self.session is not None:
80              self.session.Unsubscribe(CHANGED, self.update_tree)              self.session.Unsubscribe(CHANGED, self.update_tree)
81              self.session = None              self.session = None
82          self.app.Unsubscribe(SESSION_CHANGED, self.session_changed)          self.app.Unsubscribe(SESSION_REPLACED, self.session_changed)
83          self.app.interactor.Unsubscribe(SELECTED_LAYER, self.layer_selected)          self.mainwindow.Unsubscribe(LAYER_SELECTED, self.layer_selected)
84    
85      def update_tree(self, *args):      def update_tree(self, *args):
86          """Clear and rebuild the tree"""          """Clear and rebuild the tree"""
87          self.DeleteAllItems()          self.DeleteAllItems()
88          self.layer_to_item.clear()          self.layer_to_item.clear()
89            self.image_list = wxImageList(BMP_SIZE, BMP_SIZE, False, 0)
90    
91            bmp = wxEmptyBitmap(BMP_SIZE, BMP_SIZE)
92            dc = wxMemoryDC()
93            dc.SelectObject(bmp)
94            dc.SetBrush(wxBLACK_BRUSH)
95            dc.Clear()
96            dc.SelectObject(wxNullBitmap)
97    
98            self.emptyImageIndex = \
99                self.image_list.AddWithColourMask(bmp, wxColour(0, 0, 0))
100    
101            self.AssignImageList(self.image_list)
102    
103          session = self.app.session          session = self.app.session
104          info = session.TreeInfo()          info = session.TreeInfo()
105          root = self.AddRoot(info[0])          root = self.AddRoot(info[0], -1, -1, None)
106            self.SetItemImage(root, self.emptyImageIndex)
107          self.add_items(root, info[1])          self.add_items(root, info[1])
108          self.Expand(root)          self.Expand(root)
109          # select the selected layer          # select the selected layer
110          selected_layer = self.app.interactor.selected_layer          selected_layer = self.mainwindow.current_layer()
111          if selected_layer is not None:          if selected_layer is not None:
112              # One would expect that the selected_layer's id is in              # One would expect that the selected_layer's id is in
113              # layer_to_item at this point as we've just rebuilt that              # layer_to_item at this point as we've just rebuilt that
114              # mapping completely. However, when a new session is loaded              # mapping completely. However, when a new session is loaded
115              # for instance, it can happen that the tree view is updated              # for instance, it can happen that the tree view is updated
116              # before the interactor in which case selected_layer may be              # before the canvas's selection in which case selected_layer
117              # a layer of the old session.              # may be a layer of the old session.
118              item = self.layer_to_item.get(id(selected_layer))              item = self.layer_to_item.get(id(selected_layer))
119              if item is not None:              if item is not None:
120                  self.SelectItem(item)                  self.SelectItem(item)
121    
122      def add_items(self, parent, items):      def add_items(self, parent, items):
123    
124            if items is None: return
125    
126          for item in items:          for item in items:
127              if hasattr(item, "TreeInfo"):              if hasattr(item, "TreeInfo"):
128                  # Supports the TreeInfo protocol                  # Supports the TreeInfo protocol
129                  info = item.TreeInfo()                  info = item.TreeInfo()
130                  treeitem = self.AppendItem(parent, info[0])                  treeitem = self.AppendItem(parent, info[0], -1, -1, None)
131                    self.SetItemImage(treeitem, self.emptyImageIndex)
132                  self.SetPyData(treeitem, item)                  self.SetPyData(treeitem, item)
133                  self.add_items(treeitem, info[1])                  self.add_items(treeitem, info[1])
134                  self.Expand(treeitem)                  self.Expand(treeitem)
135                  if isinstance(item, Layer):                  if isinstance(item, Layer):
136                      self.layer_to_item[id(item)] = treeitem                      self.layer_to_item[id(item)] = treeitem
137              elif isinstance(item, StringType):              elif isinstance(item, StringType) or \
138                     isinstance(item, UnicodeType):
139                  # it's a string                  # it's a string
140                  # FIXME: What to do about UNICODE                  treeitem = self.AppendItem(parent, item, -1, -1, None)
141                  self.AppendItem(parent, item)                  self.SetItemImage(treeitem, self.emptyImageIndex)
142              else:              else:
143                  # assume its a sequence (title, items)                  # assume its a sequence (title, items)
144                  treeitem = self.AppendItem(parent, item[0])                  if isinstance(item[1], Color):
145                  self.add_items(treeitem, item[1])  
146                        treeitem = self.AppendItem(parent, "(%s)" % item[0])
147    
148                        bmp = wxEmptyBitmap(BMP_SIZE, BMP_SIZE)
149                        brush = wxBrush(Color2wxColour(item[1]), wxSOLID)
150                        dc = wxMemoryDC()
151                        dc.SelectObject(bmp)
152                        dc.SetBrush(brush)
153                        dc.Clear()
154                        dc.DrawRoundedRectangle(0, 0,
155                                                bmp.GetWidth(), bmp.GetHeight(),
156                                                4)
157                        dc.SelectObject(wxNullBitmap)
158    
159                        i = self.image_list.Add(bmp)
160                        self.SetItemImage(treeitem, i)
161                    else:
162                        treeitem = self.AppendItem(parent, item[0], -1, -1, None)
163                        self.SetItemImage(treeitem, self.emptyImageIndex)
164                        self.add_items(treeitem, item[1])
165                  self.Expand(treeitem)                  self.Expand(treeitem)
166    
167      def session_changed(self, *args):      def session_changed(self, *args):
# Line 164  class SessionTreeCtrl(wxTreeCtrl): Line 209  class SessionTreeCtrl(wxTreeCtrl):
209              return              return
210          self.normalize_selection()          self.normalize_selection()
211          # SelectedLayer returns None if no layer is selected. Since          # SelectedLayer returns None if no layer is selected. Since
212          # passing None to interactor.SelectLayer deselects the layer we          # passing None to SelectLayer deselects the layer we can simply
213          # can simply pass the result of SelectedLayer on in all cases          # pass the result of SelectedLayer on in all cases
214          self.app.interactor.SelectLayer(self.SelectedLayer())          self.mainwindow.SelectLayer(self.SelectedLayer())
215    
216      def layer_selected(self, layer):      def layer_selected(self, layer):
217          item = self.layer_to_item.get(id(layer))          item = self.layer_to_item.get(id(layer))
# Line 179  class SessionTreeView(NonModalDialog): Line 224  class SessionTreeView(NonModalDialog):
224      """Non modal dialog showing the session as a tree"""      """Non modal dialog showing the session as a tree"""
225    
226      def __init__(self, parent, app, name):      def __init__(self, parent, app, name):
227          NonModalDialog.__init__(self, parent, app.interactor, name,          NonModalDialog.__init__(self, parent, name, _("Session"))
228                                  _("Session"))          self.tree = SessionTreeCtrl(self, -1, parent, app)
         self.tree = SessionTreeCtrl(self, -1, app)  
229    
230      def OnClose(self, event):      def OnClose(self, event):
         #self.interactor.Unsubscribe(SELECTED_SHAPE, self.select_shape)  
231          NonModalDialog.OnClose(self, event)          NonModalDialog.OnClose(self, event)
232    
233          # if there were a way to get notified when the tree control          # if there were a way to get notified when the tree control
# Line 192  class SessionTreeView(NonModalDialog): Line 235  class SessionTreeView(NonModalDialog):
235          # of doing it here. (EVT_WINDOW_DESTROY doesn't seem to sent at          # of doing it here. (EVT_WINDOW_DESTROY doesn't seem to sent at
236          # all)          # all)
237          self.tree.unsubscribe_all()          self.tree.unsubscribe_all()
238    
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