Thuban/UI/legend.py

# Copyright (c) 2001, 2002, 2003 by Intevation GmbH
# Authors:
# Jonathan Coles <[email protected]>
#
# This program is free software under the GPL (>=v2)
# Read the file COPYING coming with Thuban for details.

__version__ = "$Revision$"

from Thuban import _

from wxPython.wx import *

from Thuban.Model.layer import Layer
from Thuban.Model.map import Map
from Thuban.Model.messages import *
from Thuban.Model.classification import ClassGroup

from Thuban.UI.messages import *
from Thuban.UI.classifier import ClassDataPreviewer
from Thuban.UI.dock import DockPanel

from Thuban.Lib.connector import ConnectorError

ID_LEGEND_MOVEUP = 4001
ID_LEGEND_MOVEDOWN = 4002
ID_LEGEND_TREE = 4003
ID_LEGEND_PROPS = 4004
ID_LEGEND_SHOWLAYER = 4005
ID_LEGEND_HIDELAYER = 4006

BMP_SIZE_W = 30
BMP_SIZE_H = 15

class LegendPanel(DockPanel):

    def __init__(self, parent, map, mainWindow): 
        DockPanel.__init__(self, parent, -1)

        self.mainWindow = mainWindow
        self.parent = parent

        panelBox = wxBoxSizer(wxVERTICAL)

        buttonBox = wxGridSizer(2, 3, 0, 0)

        self.buttons = []

        button = wxButton(self, ID_LEGEND_MOVEUP, _("Move Up"))
        buttonBox.Add(button, 0, wxGROW | wxLEFT | wxRIGHT, 0)
        self.buttons.append(button)

        button = wxButton(self, ID_LEGEND_SHOWLAYER, _("Show Layer"))
        buttonBox.Add(button, 0, wxGROW | wxLEFT | wxRIGHT, 0)
        self.buttons.append(button)

        button = wxButton(self, ID_LEGEND_PROPS, _("Properties"))
        buttonBox.Add(button, 0, wxGROW | wxLEFT | wxRIGHT, 0)
        self.buttons.append(button)

        button = wxButton(self, ID_LEGEND_MOVEDOWN, _("Move Down"))
        buttonBox.Add(button, 0, wxGROW | wxLEFT | wxRIGHT, 0)
        self.buttons.append(button)

        button = wxButton(self, ID_LEGEND_HIDELAYER, _("Hide Layer"))
        buttonBox.Add(button, 0, wxGROW | wxLEFT | wxRIGHT, 0)
        self.buttons.append(button)

        EVT_BUTTON(self, ID_LEGEND_MOVEUP, self._OnMoveUp)
        EVT_BUTTON(self, ID_LEGEND_MOVEDOWN, self._OnMoveDown)
        EVT_BUTTON(self, ID_LEGEND_PROPS, self._OnProperties)
        EVT_BUTTON(self, ID_LEGEND_SHOWLAYER, self._OnShowLayer)
        EVT_BUTTON(self, ID_LEGEND_HIDELAYER, self._OnHideLayer)

        panelBox.Add(buttonBox, 0, 0, 4)

        self.tree = LegendTree(self, ID_LEGEND_TREE, map, mainWindow)

        panelBox.Add(self.tree, 1, wxGROW, 4)

        panelBox.Fit(self)

        self.SetAutoLayout(True)
        self.SetSizer(panelBox)
        panelBox.SetSizeHints(self)

        #panelBox.SetSizeHints(self.parent)

        self.panelBox = panelBox

        EVT_CLOSE(self, self._OnClose)


    def GetMap(self):
        return self.tree.GetMap()

    def SetMap(self, map):
        self.tree.SetMap(map)

    def DoOnSelChanged(self, layer, group):

        ok = isinstance(layer, Layer)
        self.__EnableButtons(ok)

        if ok:
            self.mainWindow.SelectLayer(layer)

    def DoOnProperties(self):
        list = self.tree.GetSelectedHierarchy()

        ok = isinstance(list[0], Layer)
        if ok:
            self.mainWindow.OpenLayerProperties(list[0], list[1])

    def Destroy(self):
        self.__Close()

    def _OnProperties(self, event):
        self.DoOnProperties()

    def _OnMoveUp(self, event): 
        self.tree.MoveCurrentItemUp()

    def _OnMoveDown(self, event):
        self.tree.MoveCurrentItemDown()

    def _OnShowLayer(self, event):
        self.tree.DoOnShowLayer()
        pass

    #def Close(self, force = False):
        #DockPanel.Close(self, force)
        
    def _OnClose(self, event):
        self.__Close()

    def _OnHideLayer(self, event):
        self.tree.DoOnHideLayer()
        pass

    def __EnableButtons(self, on):
        for b in self.buttons:
            b.Enable(on)

    def __Close(self):
        self.tree.Close()

class LegendTree(wxTreeCtrl):

    def __init__(self, parent, id, map, mainWindow):
        wxTreeCtrl.__init__(self, parent, id,
                            style = wxTR_DEFAULT_STYLE | wxTR_HIDE_ROOT,
                            size = (200, 200))

        self.mainWindow = mainWindow
        self.map = None
        self.parent = parent
        self.layer2id = {}

        self.image_list = None
        self.emptyImageIndex = 0

        self.previewer = ClassDataPreviewer()

        EVT_TREE_ITEM_ACTIVATED(self, ID_LEGEND_TREE, self._OnItemActivated)
        EVT_TREE_SEL_CHANGED(self, ID_LEGEND_TREE, self._OnSelChanged)

        EVT_CLOSE(self, self._OnClose)

        self.SetMap(map)

    def _OnClose(self, event):
        self.SetMap(None)

    def GetMap(self):
        return self.map

    def SetMap(self, map):

        sub_list = [(MAP_STACKING_CHANGED, self._OnMsgMapStackingChanged),
                    (MAP_LAYERS_ADDED, self._OnMsgMapLayersAddedRemoved),
                    (MAP_LAYERS_REMOVED, self._OnMsgMapLayersAddedRemoved)]

        if self.map is not None:
            for msg, func in sub_list: self.map.Unsubscribe(msg, func)
            #self.mainWindow.application.Unsubscribe(SESSION_REPLACED, 
                #self._OnMsgMapsChanged)
            #try:
                #self.mainWindow.application.session.Unsubscribe(MAPS_CHANGED, 
                    #self._OnMsgMapsChanged)
            #except ConnectorError:
                #pass
            self.__DeleteAllItems()
        
        self.map = map

        if self.map is not None:
            for msg, func in sub_list: self.map.Subscribe(msg, func)
            #self.mainWindow.application.session.Subscribe(MAPS_CHANGED, 
                #self._OnMsgMapsChanged)
            #self.mainWindow.application.Subscribe(SESSION_REPLACED, 
                #self._OnMsgMapsChanged)
            self.__FillTree(self.map)

            
    def MoveCurrentItemUp(self):
        cur_id = self.GetSelection()
        assert cur_id.IsOk()

        cur_data = self.GetPyData(cur_id)

        #prev_id = self.GetPrevSibling(cur_id)

        #
        # Get out if there's nowhere to go
        #
        #if prev_id == INVALID_TREE_ID: return

        if isinstance(cur_data, Layer):
            self.map.RaiseLayer(cur_data)
        elif isinstance(cur_data, ClassGroup):
            pass
        else:
            assert False, "Shouldn't be here."
            pass

    def MoveCurrentItemDown(self):
        cur_id = self.GetSelection()
        assert cur_id.IsOk()

        cur_data = self.GetPyData(cur_id)

        if isinstance(cur_data, Layer):
            self.map.LowerLayer(cur_data)
        elif isinstance(cur_data, ClassGroup):
            pass
        else:
            assert False, "Shouldn't be here."
            pass


    def OnCompareItems(self, item1, item2):

        data1 = self.GetPyData(item1)
        data2 = self.GetPyData(item2)

        if isinstance(data1, Layer):
            layers = self.map.Layers()
            return layers.index(data2) - layers.index(data1)
        else:
            return wxTreeCtrl.OnCompareItems(self, item1, item2)


    def DoOnShowLayer(self):
        #self.__ShowHideLayer(True)
        layer, group = self.GetSelectedHierarchy()
        layer.SetVisible(True)

    def DoOnHideLayer(self):
        #self.__ShowHideLayer(False)
        layer, group = self.GetSelectedHierarchy()
        layer.SetVisible(False)

    def Sort(self):
        self.SortChildren(self.GetRootItem())

    def _OnMsgMapsChanged(self):
        #print self.map is self.mainWindow.Map()
        self.SetMap(self.mainWindow.Map())
        
    def _OnSelChanged(self, event):

        layer, group = self.GetSelectedHierarchy()
        self.parent.DoOnSelChanged(layer, group)

    def _OnItemActivated(self, event):
        self.parent.DoOnProperties()

    def _OnMsgLayerChanged(self, layer):
        assert isinstance(layer, Layer)

        id = self.layer2id[layer]
        assert id.IsOk()

        # XXX: yikes! this is so bad, we should be doing what is 
        #      commented out, but there is a problem with keeping
        #      track of the images in the image list when we replace
        #      a layer. it ends up causing a seg fault.
        self.__FillTree(self.map)
        #self.__FillTreeLayer(id)

    def _OnMsgMapStackingChanged(self, *args):
        self.Sort()
        id = self.GetSelection()

        if id.IsOk():
            self.EnsureVisible(id)

    def _OnMsgMapLayersAddedRemoved(self, map):
        assert map is self.map

        self.__FillTree(self.map)

    def _OnMsgLayerVisibilityChanged(self, layer):
        assert isinstance(layer, Layer)

        self.__ShowHideLayer(layer)

    def GetSelectedHierarchy(self):
        id = self.GetSelection()
        assert id.IsOk()

        layer = self.GetPyData(id)
        group = None

        if isinstance(layer, ClassGroup):
            id = self.GetItemParent(id)
            assert id.IsOk()
            group = layer
            layer = self.GetPyData(id)

        return (layer, group)

    def __FillTree(self, map):

        assert isinstance(map, Map)

        self.Freeze()

        self.__DeleteAllItems()

        if map.HasLayers():

            self.image_list = wxImageList(BMP_SIZE_W, BMP_SIZE_H, False, 0)
                                                                                
            bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)
            dc = wxMemoryDC()
            dc.SelectObject(bmp)
            dc.SetBrush(wxBLACK_BRUSH)
            dc.Clear()
            dc.SelectObject(wxNullBitmap)
                                                                                
            self.emptyImageIndex = \
                self.image_list.AddWithColourMask(bmp, wxColour(0, 0, 0))
                                                                                
            self.AssignImageList(self.image_list)

            root = self.AddRoot("")

            for l in map.Layers():
                id = self.PrependItem(root, l.Title())
                l.Subscribe(LAYER_CHANGED, self._OnMsgLayerChanged)
                l.Subscribe(LAYER_VISIBILITY_CHANGED, 
                            self._OnMsgLayerVisibilityChanged)
                self.SetPyData(id, l)
                self.__SetVisibilityStyle(l.Visible(), id)

                self.layer2id[l] = id

                self.__FillTreeLayer(id)
                self.Expand(id)

        self.Thaw()

    def __FillTreeLayer(self, pid):
        layer = self.GetPyData(pid)

        self.Freeze()

        self.DeleteChildren(pid)

        clazz = layer.GetClassification()

        shapeType = layer.ShapeType()

        show = layer.Visible()
        for g in clazz:
            if g.IsVisible():
                id = self.AppendItem(pid, g.GetDisplayText())
                self.SetPyData(id, g)
                self.__SetVisibilityStyle(show, id)

                bmp = self.__BuildGroupImage(g, shapeType)

                if bmp is None:
                    self.SetItemImage(id, self.emptyImageIndex)
                else:
                    i = self.image_list.Add(bmp)
                    self.SetItemImage(id, i)

        self.Thaw()

    def __BuildGroupImage(self, group, shapeType):
        assert isinstance(group, ClassGroup)

        bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)
        #brush = wxBrush(Color2wxColour(item[1]), wxSOLID)
        dc = wxMemoryDC()
        dc.SelectObject(bmp)
        dc.Clear()

        self.previewer.Draw(dc, None, group.GetProperties(), shapeType)

        return bmp

    def __DeleteAllItems(self):

        while len(self.layer2id) > 0:
            layer, id = self.layer2id.popitem()
            layer.Unsubscribe(LAYER_CHANGED, 
                              self._OnMsgLayerChanged)
            layer.Unsubscribe(LAYER_VISIBILITY_CHANGED, 
                              self._OnMsgLayerVisibilityChanged)

        self.DeleteAllItems()

    def __SetVisibilityStyle(self, visible, id):
        font = self.GetItemFont(id)

        if visible:
            font.SetStyle(wxNORMAL)
            color = wxBLACK
        else:
            font.SetStyle(wxITALIC)
            color = wxLIGHT_GREY

        self.SetItemTextColour(id, color)
        self.SetItemFont(id, font)
        
    def __ShowHideLayer(self, layer):
        parent = self.layer2id[layer]
        assert parent.IsOk()

        visible = layer.Visible()

        self.__SetVisibilityStyle(visible, parent)

        id, cookie = self.GetFirstChild(parent, 123)

        while id.IsOk():
            self.__SetVisibilityStyle(visible, id)
            id, cookie = self.GetNextChild(parent, cookie)
            
1	jonathan	542	# Copyright (c) 2001, 2002, 2003 by Intevation GmbH
2			# Authors:
3			# Jonathan Coles <[email protected]>
4			#
5			# This program is free software under the GPL (>=v2)
6			# Read the file COPYING coming with Thuban for details.
7
8			__version__ = "$Revision$"
9
10			from Thuban import _
11
12			from wxPython.wx import *
13
14			from Thuban.Model.layer import Layer
15			from Thuban.Model.map import Map
16			from Thuban.Model.messages import *
17			from Thuban.Model.classification import ClassGroup
18
19	jonathan	572	from Thuban.UI.messages import *
20	jonathan	542	from Thuban.UI.classifier import ClassDataPreviewer
21	jonathan	562	from Thuban.UI.dock import DockPanel
22	jonathan	542
23	jonathan	572	from Thuban.Lib.connector import ConnectorError
24
25	jonathan	542	ID_LEGEND_MOVEUP = 4001
26			ID_LEGEND_MOVEDOWN = 4002
27			ID_LEGEND_TREE = 4003
28	jonathan	639	ID_LEGEND_PROPS = 4004
29	jonathan	542	ID_LEGEND_SHOWLAYER = 4005
30			ID_LEGEND_HIDELAYER = 4006
31
32			BMP_SIZE_W = 30
33			BMP_SIZE_H = 15
34
35	jonathan	562	class LegendPanel(DockPanel):
36
37			def __init__(self, parent, map, mainWindow):
38			DockPanel.__init__(self, parent, -1)
39
40			self.mainWindow = mainWindow
41			self.parent = parent
42
43	jonathan	542	panelBox = wxBoxSizer(wxVERTICAL)
44
45			buttonBox = wxGridSizer(2, 3, 0, 0)
46
47			self.buttons = []
48
49			button = wxButton(self, ID_LEGEND_MOVEUP, _("Move Up"))
50			buttonBox.Add(button, 0, wxGROW \| wxLEFT \| wxRIGHT, 0)
51			self.buttons.append(button)
52
53			button = wxButton(self, ID_LEGEND_SHOWLAYER, _("Show Layer"))
54			buttonBox.Add(button, 0, wxGROW \| wxLEFT \| wxRIGHT, 0)
55			self.buttons.append(button)
56
57	jonathan	639	button = wxButton(self, ID_LEGEND_PROPS, _("Properties"))
58	jonathan	542	buttonBox.Add(button, 0, wxGROW \| wxLEFT \| wxRIGHT, 0)
59			self.buttons.append(button)
60
61			button = wxButton(self, ID_LEGEND_MOVEDOWN, _("Move Down"))
62			buttonBox.Add(button, 0, wxGROW \| wxLEFT \| wxRIGHT, 0)
63			self.buttons.append(button)
64
65			button = wxButton(self, ID_LEGEND_HIDELAYER, _("Hide Layer"))
66			buttonBox.Add(button, 0, wxGROW \| wxLEFT \| wxRIGHT, 0)
67			self.buttons.append(button)
68
69			EVT_BUTTON(self, ID_LEGEND_MOVEUP, self._OnMoveUp)
70			EVT_BUTTON(self, ID_LEGEND_MOVEDOWN, self._OnMoveDown)
71	jonathan	639	EVT_BUTTON(self, ID_LEGEND_PROPS, self._OnProperties)
72	jonathan	542	EVT_BUTTON(self, ID_LEGEND_SHOWLAYER, self._OnShowLayer)
73			EVT_BUTTON(self, ID_LEGEND_HIDELAYER, self._OnHideLayer)
74
75			panelBox.Add(buttonBox, 0, 0, 4)
76
77	jonathan	562	self.tree = LegendTree(self, ID_LEGEND_TREE, map, mainWindow)
78	jonathan	542
79			panelBox.Add(self.tree, 1, wxGROW, 4)
80
81	jonathan	572	panelBox.Fit(self)
82
83	jonathan	562	self.SetAutoLayout(True)
84			self.SetSizer(panelBox)
85	jonathan	542	panelBox.SetSizeHints(self)
86
87	jonathan	562	#panelBox.SetSizeHints(self.parent)
88	jonathan	542
89	jonathan	562	self.panelBox = panelBox
90	jonathan	542
91	jonathan	572	EVT_CLOSE(self, self._OnClose)
92
93
94	jonathan	562	def GetMap(self):
95			return self.tree.GetMap()
96
97			def SetMap(self, map):
98			self.tree.SetMap(map)
99
100	jonathan	572	def DoOnSelChanged(self, layer, group):
101	jonathan	542
102	jonathan	572	ok = isinstance(layer, Layer)
103			self.__EnableButtons(ok)
104
105			if ok:
106	jonathan	568	self.mainWindow.SelectLayer(layer)
107
108	jonathan	639	def DoOnProperties(self):
109	jonathan	572	list = self.tree.GetSelectedHierarchy()
110
111			ok = isinstance(list[0], Layer)
112			if ok:
113	jonathan	639	self.mainWindow.OpenLayerProperties(list[0], list[1])
114	jonathan	572
115	jonathan	578	def Destroy(self):
116			self.__Close()
117
118	jonathan	639	def _OnProperties(self, event):
119			self.DoOnProperties()
120	jonathan	542
121			def _OnMoveUp(self, event):
122			self.tree.MoveCurrentItemUp()
123
124			def _OnMoveDown(self, event):
125			self.tree.MoveCurrentItemDown()
126
127			def _OnShowLayer(self, event):
128			self.tree.DoOnShowLayer()
129			pass
130
131	jonathan	578	#def Close(self, force = False):
132			#DockPanel.Close(self, force)
133
134	jonathan	572	def _OnClose(self, event):
135	jonathan	578	self.__Close()
136	jonathan	572
137	jonathan	542	def _OnHideLayer(self, event):
138			self.tree.DoOnHideLayer()
139			pass
140
141			def __EnableButtons(self, on):
142			for b in self.buttons:
143			b.Enable(on)
144
145	jonathan	578	def __Close(self):
146			self.tree.Close()
147
148	jonathan	542	class LegendTree(wxTreeCtrl):
149
150	jonathan	562	def __init__(self, parent, id, map, mainWindow):
151	jonathan	542	wxTreeCtrl.__init__(self, parent, id,
152			style = wxTR_DEFAULT_STYLE \| wxTR_HIDE_ROOT,
153			size = (200, 200))
154
155	jonathan	572	self.mainWindow = mainWindow
156	jonathan	562	self.map = None
157	jonathan	542	self.parent = parent
158	jonathan	572	self.layer2id = {}
159	jonathan	542
160			self.image_list = None
161			self.emptyImageIndex = 0
162
163			self.previewer = ClassDataPreviewer()
164
165			EVT_TREE_ITEM_ACTIVATED(self, ID_LEGEND_TREE, self._OnItemActivated)
166			EVT_TREE_SEL_CHANGED(self, ID_LEGEND_TREE, self._OnSelChanged)
167
168	jonathan	572	EVT_CLOSE(self, self._OnClose)
169
170	jonathan	562	self.SetMap(map)
171	jonathan	542
172	jonathan	572	def _OnClose(self, event):
173			self.SetMap(None)
174
175	jonathan	562	def GetMap(self):
176			return self.map
177	jonathan	542
178	jonathan	562	def SetMap(self, map):
179
180			sub_list = [(MAP_STACKING_CHANGED, self._OnMsgMapStackingChanged),
181			(MAP_LAYERS_ADDED, self._OnMsgMapLayersAddedRemoved),
182			(MAP_LAYERS_REMOVED, self._OnMsgMapLayersAddedRemoved)]
183
184			if self.map is not None:
185			for msg, func in sub_list: self.map.Unsubscribe(msg, func)
186	jonathan	572	#self.mainWindow.application.Unsubscribe(SESSION_REPLACED,
187			#self._OnMsgMapsChanged)
188			#try:
189			#self.mainWindow.application.session.Unsubscribe(MAPS_CHANGED,
190			#self._OnMsgMapsChanged)
191			#except ConnectorError:
192			#pass
193	jonathan	562	self.__DeleteAllItems()
194
195			self.map = map
196
197			if self.map is not None:
198			for msg, func in sub_list: self.map.Subscribe(msg, func)
199	jonathan	572	#self.mainWindow.application.session.Subscribe(MAPS_CHANGED,
200			#self._OnMsgMapsChanged)
201			#self.mainWindow.application.Subscribe(SESSION_REPLACED,
202			#self._OnMsgMapsChanged)
203	jonathan	562	self.__FillTree(self.map)
204
205
206	jonathan	542	def MoveCurrentItemUp(self):
207			cur_id = self.GetSelection()
208	jonathan	605	assert cur_id.IsOk()
209	jonathan	542
210			cur_data = self.GetPyData(cur_id)
211
212			#prev_id = self.GetPrevSibling(cur_id)
213
214			#
215			# Get out if there's nowhere to go
216			#
217			#if prev_id == INVALID_TREE_ID: return
218
219			if isinstance(cur_data, Layer):
220			self.map.RaiseLayer(cur_data)
221			elif isinstance(cur_data, ClassGroup):
222			pass
223			else:
224	jonathan	605	assert False, "Shouldn't be here."
225	jonathan	542	pass
226
227			def MoveCurrentItemDown(self):
228			cur_id = self.GetSelection()
229	jonathan	605	assert cur_id.IsOk()
230	jonathan	542
231			cur_data = self.GetPyData(cur_id)
232
233			if isinstance(cur_data, Layer):
234			self.map.LowerLayer(cur_data)
235			elif isinstance(cur_data, ClassGroup):
236			pass
237			else:
238	jonathan	605	assert False, "Shouldn't be here."
239	jonathan	542	pass
240
241
242			def OnCompareItems(self, item1, item2):
243
244			data1 = self.GetPyData(item1)
245			data2 = self.GetPyData(item2)
246
247			if isinstance(data1, Layer):
248			layers = self.map.Layers()
249			return layers.index(data2) - layers.index(data1)
250			else:
251			return wxTreeCtrl.OnCompareItems(self, item1, item2)
252
253
254			def DoOnShowLayer(self):
255	jonathan	572	#self.__ShowHideLayer(True)
256			layer, group = self.GetSelectedHierarchy()
257			layer.SetVisible(True)
258	jonathan	542
259			def DoOnHideLayer(self):
260	jonathan	572	#self.__ShowHideLayer(False)
261			layer, group = self.GetSelectedHierarchy()
262			layer.SetVisible(False)
263	jonathan	542
264			def Sort(self):
265			self.SortChildren(self.GetRootItem())
266
267	jonathan	572	def _OnMsgMapsChanged(self):
268	jonathan	639	#print self.map is self.mainWindow.Map()
269	jonathan	572	self.SetMap(self.mainWindow.Map())
270
271	jonathan	542	def _OnSelChanged(self, event):
272
273	jonathan	572	layer, group = self.GetSelectedHierarchy()
274	jonathan	568	self.parent.DoOnSelChanged(layer, group)
275
276	jonathan	542	def _OnItemActivated(self, event):
277	jonathan	639	self.parent.DoOnProperties()
278	jonathan	542
279			def _OnMsgLayerChanged(self, layer):
280	jonathan	605	assert isinstance(layer, Layer)
281	jonathan	542
282			id = self.layer2id[layer]
283	jonathan	605	assert id.IsOk()
284	jonathan	542
285	jonathan	578	# XXX: yikes! this is so bad, we should be doing what is
286			# commented out, but there is a problem with keeping
287			# track of the images in the image list when we replace
288			# a layer. it ends up causing a seg fault.
289			self.__FillTree(self.map)
290			#self.__FillTreeLayer(id)
291	jonathan	542
292			def _OnMsgMapStackingChanged(self, *args):
293			self.Sort()
294	jonathan	562	id = self.GetSelection()
295	jonathan	542
296	jonathan	562	if id.IsOk():
297			self.EnsureVisible(id)
298
299			def _OnMsgMapLayersAddedRemoved(self, map):
300	jonathan	605	assert map is self.map
301	jonathan	542
302			self.__FillTree(self.map)
303
304	jonathan	572	def _OnMsgLayerVisibilityChanged(self, layer):
305	jonathan	605	assert isinstance(layer, Layer)
306	jonathan	572
307			self.__ShowHideLayer(layer)
308
309			def GetSelectedHierarchy(self):
310			id = self.GetSelection()
311	jonathan	605	assert id.IsOk()
312	jonathan	572
313			layer = self.GetPyData(id)
314			group = None
315
316			if isinstance(layer, ClassGroup):
317			id = self.GetItemParent(id)
318	jonathan	605	assert id.IsOk()
319	jonathan	572	group = layer
320			layer = self.GetPyData(id)
321
322			return (layer, group)
323
324	jonathan	542	def __FillTree(self, map):
325
326	jonathan	605	assert isinstance(map, Map)
327	jonathan	542
328			self.Freeze()
329
330			self.__DeleteAllItems()
331
332			if map.HasLayers():
333
334			self.image_list = wxImageList(BMP_SIZE_W, BMP_SIZE_H, False, 0)
335
336			bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)
337			dc = wxMemoryDC()
338			dc.SelectObject(bmp)
339			dc.SetBrush(wxBLACK_BRUSH)
340			dc.Clear()
341			dc.SelectObject(wxNullBitmap)
342
343			self.emptyImageIndex = \
344			self.image_list.AddWithColourMask(bmp, wxColour(0, 0, 0))
345
346			self.AssignImageList(self.image_list)
347
348			root = self.AddRoot("")
349
350			for l in map.Layers():
351			id = self.PrependItem(root, l.Title())
352			l.Subscribe(LAYER_CHANGED, self._OnMsgLayerChanged)
353	jonathan	572	l.Subscribe(LAYER_VISIBILITY_CHANGED,
354			self._OnMsgLayerVisibilityChanged)
355	jonathan	542	self.SetPyData(id, l)
356	jonathan	632	self.__SetVisibilityStyle(l.Visible(), id)
357	jonathan	542
358			self.layer2id[l] = id
359
360			self.__FillTreeLayer(id)
361			self.Expand(id)
362
363			self.Thaw()
364
365			def __FillTreeLayer(self, pid):
366			layer = self.GetPyData(pid)
367
368			self.Freeze()
369
370			self.DeleteChildren(pid)
371
372			clazz = layer.GetClassification()
373
374			shapeType = layer.ShapeType()
375
376	jonathan	632	show = layer.Visible()
377	jonathan	542	for g in clazz:
378	jonathan	639	if g.IsVisible():
379			id = self.AppendItem(pid, g.GetDisplayText())
380			self.SetPyData(id, g)
381			self.__SetVisibilityStyle(show, id)
382	jonathan	542
383	jonathan	639	bmp = self.__BuildGroupImage(g, shapeType)
384	jonathan	542
385	jonathan	639	if bmp is None:
386			self.SetItemImage(id, self.emptyImageIndex)
387			else:
388			i = self.image_list.Add(bmp)
389			self.SetItemImage(id, i)
390	jonathan	542
391			self.Thaw()
392
393			def __BuildGroupImage(self, group, shapeType):
394	jonathan	605	assert isinstance(group, ClassGroup)
395	jonathan	542
396			bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)
397			#brush = wxBrush(Color2wxColour(item[1]), wxSOLID)
398			dc = wxMemoryDC()
399			dc.SelectObject(bmp)
400			dc.Clear()
401
402			self.previewer.Draw(dc, None, group.GetProperties(), shapeType)
403
404			return bmp
405
406			def __DeleteAllItems(self):
407
408	jonathan	572	while len(self.layer2id) > 0:
409			layer, id = self.layer2id.popitem()
410			layer.Unsubscribe(LAYER_CHANGED,
411			self._OnMsgLayerChanged)
412			layer.Unsubscribe(LAYER_VISIBILITY_CHANGED,
413			self._OnMsgLayerVisibilityChanged)
414	jonathan	542
415	jonathan	578	self.DeleteAllItems()
416
417	jonathan	632	def __SetVisibilityStyle(self, visible, id):
418	jonathan	572	font = self.GetItemFont(id)
419	jonathan	542
420	jonathan	632	if visible:
421	jonathan	572	font.SetStyle(wxNORMAL)
422			color = wxBLACK
423			else:
424			font.SetStyle(wxITALIC)
425			color = wxLIGHT_GREY
426	jonathan	542
427	jonathan	572	self.SetItemTextColour(id, color)
428			self.SetItemFont(id, font)
429
430			def __ShowHideLayer(self, layer):
431			parent = self.layer2id[layer]
432	jonathan	605	assert parent.IsOk()
433	jonathan	542
434	jonathan	632	visible = layer.Visible()
435	jonathan	542
436	jonathan	632	self.__SetVisibilityStyle(visible, parent)
437	jonathan	542
438	jonathan	572	id, cookie = self.GetFirstChild(parent, 123)
439	jonathan	542
440	jonathan	572	while id.IsOk():
441	jonathan	632	self.__SetVisibilityStyle(visible, id)
442	jonathan	572	id, cookie = self.GetNextChild(parent, cookie)
443
Name	Value
svn:eol-style	native
svn:keywords	Author Date Id Revision