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 _

import resource

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_RAISE = 4001
ID_LEGEND_LOWER = 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

RAISE_BMP = "raise_layer"
LOWER_BMP = "lower_layer"
SHOW_BMP  = "show_layer"
HIDE_BMP  = "hide_layer"
PROPS_BMP = "layer_properties"


class LegendPanel(DockPanel):

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

        self.mainWindow = mainWindow
        self.parent = parent

        self.buttons = []

        panelBox = wxBoxSizer(wxVERTICAL)

        self.toolBar = wxToolBar(self, -1)
        self.toolBar.SetToolBitmapSize(wxSize(24, 24))

        bmp = resource.GetBitmapResource(RAISE_BMP, wxBITMAP_TYPE_XPM)
        self.toolBar.AddTool(ID_LEGEND_RAISE, bmp, 
            shortHelpString=_("Raise Layer"))

        bmp = resource.GetBitmapResource(LOWER_BMP, wxBITMAP_TYPE_XPM)
        self.toolBar.AddTool(ID_LEGEND_LOWER, bmp, 
            shortHelpString=_("Lower Layer"))

        bmp = resource.GetBitmapResource(SHOW_BMP, wxBITMAP_TYPE_XPM)
        self.toolBar.AddTool(ID_LEGEND_SHOWLAYER, bmp, 
            shortHelpString=_("Show Layer"))

        bmp = resource.GetBitmapResource(HIDE_BMP, wxBITMAP_TYPE_XPM)
        self.toolBar.AddTool(ID_LEGEND_HIDELAYER, bmp, 
            shortHelpString=_("Hide Layer"))

        bmp = resource.GetBitmapResource(PROPS_BMP, wxBITMAP_TYPE_XPM)
        self.toolBar.AddTool(ID_LEGEND_PROPS, bmp, 
            shortHelpString=_("Edit Layer Properties"))

        self.toolBar.Realize()
        panelBox.Add(self.toolBar, 0, wxALL, 0)

        EVT_TOOL(self, ID_LEGEND_RAISE, self._OnMoveUp)
        EVT_TOOL(self, ID_LEGEND_LOWER, self._OnMoveDown)
        EVT_TOOL(self, ID_LEGEND_PROPS, self._OnProperties)
        EVT_TOOL(self, ID_LEGEND_SHOWLAYER, self._OnShowLayer)
        EVT_TOOL(self, ID_LEGEND_HIDELAYER, self._OnHideLayer)

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

        panelBox.Add(self.tree, 1, wxGROW, 0)

        #panelBox.Fit(self)

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


        self.panelBox = panelBox

        self.__EnableButtons(False)

        self.Create()

        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)

        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):
        self.toolBar.EnableTool(ID_LEGEND_RAISE, on)
        self.toolBar.EnableTool(ID_LEGEND_LOWER, on)
        self.toolBar.EnableTool(ID_LEGEND_SHOWLAYER,  on)
        self.toolBar.EnableTool(ID_LEGEND_HIDELAYER,  on)
        self.toolBar.EnableTool(ID_LEGEND_PROPS, 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 GetSelectedHierarchy(self):
        id = self.GetSelection()

        if not id.IsOk():
            return (None, None)

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

    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.__UpdateSelection()
        #self.__FillTreeLayer(id)

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

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

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

        self.__FillTree(self.map)
        self.__UpdateSelection()

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

        self.__ShowHideLayer(layer)
        self.__UpdateSelection()

    def _OnMsgLayerTitleChanged(self, layer):

        id = self.layer2id[layer]
        if id.IsOk():
            self.SetItemText(id, layer.Title())
        self.__UpdateSelection()

    def __UpdateSelection(self):
        layer, group = self.GetSelectedHierarchy()
        self.parent.DoOnSelChanged(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)
                l.Subscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)
                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)
            layer.Unsubscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)

        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	jonathan	652	import resource
13
14	jonathan	542	from wxPython.wx import *
15
16			from Thuban.Model.layer import Layer
17			from Thuban.Model.map import Map
18			from Thuban.Model.messages import *
19			from Thuban.Model.classification import ClassGroup
20
21	jonathan	572	from Thuban.UI.messages import *
22	jonathan	542	from Thuban.UI.classifier import ClassDataPreviewer
23	jonathan	562	from Thuban.UI.dock import DockPanel
24	jonathan	542
25	jonathan	572	from Thuban.Lib.connector import ConnectorError
26
27	jonathan	652	ID_LEGEND_RAISE = 4001
28			ID_LEGEND_LOWER = 4002
29	jonathan	542	ID_LEGEND_TREE = 4003
30	jonathan	639	ID_LEGEND_PROPS = 4004
31	jonathan	542	ID_LEGEND_SHOWLAYER = 4005
32			ID_LEGEND_HIDELAYER = 4006
33
34			BMP_SIZE_W = 30
35			BMP_SIZE_H = 15
36
37	jonathan	652	RAISE_BMP = "raise_layer"
38			LOWER_BMP = "lower_layer"
39			SHOW_BMP = "show_layer"
40			HIDE_BMP = "hide_layer"
41			PROPS_BMP = "layer_properties"
42
43
44	jonathan	562	class LegendPanel(DockPanel):
45
46			def __init__(self, parent, map, mainWindow):
47			DockPanel.__init__(self, parent, -1)
48
49			self.mainWindow = mainWindow
50			self.parent = parent
51
52	jonathan	652	self.buttons = []
53
54	jonathan	542	panelBox = wxBoxSizer(wxVERTICAL)
55
56	jonathan	652	self.toolBar = wxToolBar(self, -1)
57	jonathan	658	self.toolBar.SetToolBitmapSize(wxSize(24, 24))
58	jonathan	542
59	jonathan	652	bmp = resource.GetBitmapResource(RAISE_BMP, wxBITMAP_TYPE_XPM)
60			self.toolBar.AddTool(ID_LEGEND_RAISE, bmp,
61			shortHelpString=_("Raise Layer"))
62	jonathan	542
63	jonathan	652	bmp = resource.GetBitmapResource(LOWER_BMP, wxBITMAP_TYPE_XPM)
64			self.toolBar.AddTool(ID_LEGEND_LOWER, bmp,
65			shortHelpString=_("Lower Layer"))
66	jonathan	542
67	jonathan	652	bmp = resource.GetBitmapResource(SHOW_BMP, wxBITMAP_TYPE_XPM)
68			self.toolBar.AddTool(ID_LEGEND_SHOWLAYER, bmp,
69			shortHelpString=_("Show Layer"))
70	jonathan	542
71	jonathan	652	bmp = resource.GetBitmapResource(HIDE_BMP, wxBITMAP_TYPE_XPM)
72			self.toolBar.AddTool(ID_LEGEND_HIDELAYER, bmp,
73			shortHelpString=_("Hide Layer"))
74	jonathan	542
75	jonathan	652	bmp = resource.GetBitmapResource(PROPS_BMP, wxBITMAP_TYPE_XPM)
76			self.toolBar.AddTool(ID_LEGEND_PROPS, bmp,
77			shortHelpString=_("Edit Layer Properties"))
78	jonathan	542
79	jonathan	652	self.toolBar.Realize()
80			panelBox.Add(self.toolBar, 0, wxALL, 0)
81	jonathan	542
82	jonathan	652	EVT_TOOL(self, ID_LEGEND_RAISE, self._OnMoveUp)
83			EVT_TOOL(self, ID_LEGEND_LOWER, self._OnMoveDown)
84			EVT_TOOL(self, ID_LEGEND_PROPS, self._OnProperties)
85			EVT_TOOL(self, ID_LEGEND_SHOWLAYER, self._OnShowLayer)
86			EVT_TOOL(self, ID_LEGEND_HIDELAYER, self._OnHideLayer)
87	jonathan	542
88	jonathan	562	self.tree = LegendTree(self, ID_LEGEND_TREE, map, mainWindow)
89	jonathan	542
90	jonathan	658	panelBox.Add(self.tree, 1, wxGROW, 0)
91	jonathan	542
92	jonathan	658	#panelBox.Fit(self)
93	jonathan	572
94	jonathan	562	self.SetAutoLayout(True)
95			self.SetSizer(panelBox)
96	jonathan	542	panelBox.SetSizeHints(self)
97
98	jonathan	658
99	jonathan	562	self.panelBox = panelBox
100	jonathan	542
101	jonathan	652	self.__EnableButtons(False)
102
103	jonathan	658	self.Create()
104
105	jonathan	572	EVT_CLOSE(self, self._OnClose)
106
107
108	jonathan	562	def GetMap(self):
109			return self.tree.GetMap()
110
111			def SetMap(self, map):
112			self.tree.SetMap(map)
113
114	jonathan	572	def DoOnSelChanged(self, layer, group):
115	jonathan	542
116	jonathan	572	ok = isinstance(layer, Layer)
117			self.__EnableButtons(ok)
118
119	jonathan	655	self.mainWindow.SelectLayer(layer)
120	jonathan	568
121	jonathan	639	def DoOnProperties(self):
122	jonathan	572	list = self.tree.GetSelectedHierarchy()
123
124			ok = isinstance(list[0], Layer)
125			if ok:
126	jonathan	639	self.mainWindow.OpenLayerProperties(list[0], list[1])
127	jonathan	572
128	jonathan	578	def Destroy(self):
129			self.__Close()
130
131	jonathan	639	def _OnProperties(self, event):
132			self.DoOnProperties()
133	jonathan	542
134			def _OnMoveUp(self, event):
135			self.tree.MoveCurrentItemUp()
136
137			def _OnMoveDown(self, event):
138			self.tree.MoveCurrentItemDown()
139
140			def _OnShowLayer(self, event):
141			self.tree.DoOnShowLayer()
142			pass
143
144	jonathan	578	#def Close(self, force = False):
145			#DockPanel.Close(self, force)
146
147	jonathan	572	def _OnClose(self, event):
148	jonathan	578	self.__Close()
149	jonathan	572
150	jonathan	542	def _OnHideLayer(self, event):
151			self.tree.DoOnHideLayer()
152			pass
153
154			def __EnableButtons(self, on):
155	jonathan	652	self.toolBar.EnableTool(ID_LEGEND_RAISE, on)
156			self.toolBar.EnableTool(ID_LEGEND_LOWER, on)
157			self.toolBar.EnableTool(ID_LEGEND_SHOWLAYER, on)
158			self.toolBar.EnableTool(ID_LEGEND_HIDELAYER, on)
159			self.toolBar.EnableTool(ID_LEGEND_PROPS, on)
160	jonathan	542
161	jonathan	578	def __Close(self):
162			self.tree.Close()
163
164	jonathan	542	class LegendTree(wxTreeCtrl):
165
166	jonathan	562	def __init__(self, parent, id, map, mainWindow):
167	jonathan	542	wxTreeCtrl.__init__(self, parent, id,
168			style = wxTR_DEFAULT_STYLE \| wxTR_HIDE_ROOT,
169			size = (200, 200))
170
171	jonathan	572	self.mainWindow = mainWindow
172	jonathan	562	self.map = None
173	jonathan	542	self.parent = parent
174	jonathan	572	self.layer2id = {}
175	jonathan	542
176			self.image_list = None
177			self.emptyImageIndex = 0
178
179			self.previewer = ClassDataPreviewer()
180
181			EVT_TREE_ITEM_ACTIVATED(self, ID_LEGEND_TREE, self._OnItemActivated)
182			EVT_TREE_SEL_CHANGED(self, ID_LEGEND_TREE, self._OnSelChanged)
183
184	jonathan	572	EVT_CLOSE(self, self._OnClose)
185
186	jonathan	562	self.SetMap(map)
187	jonathan	542
188	jonathan	572	def _OnClose(self, event):
189			self.SetMap(None)
190
191	jonathan	562	def GetMap(self):
192			return self.map
193	jonathan	542
194	jonathan	562	def SetMap(self, map):
195
196			sub_list = [(MAP_STACKING_CHANGED, self._OnMsgMapStackingChanged),
197			(MAP_LAYERS_ADDED, self._OnMsgMapLayersAddedRemoved),
198			(MAP_LAYERS_REMOVED, self._OnMsgMapLayersAddedRemoved)]
199
200			if self.map is not None:
201			for msg, func in sub_list: self.map.Unsubscribe(msg, func)
202	jonathan	572	#self.mainWindow.application.Unsubscribe(SESSION_REPLACED,
203			#self._OnMsgMapsChanged)
204			#try:
205			#self.mainWindow.application.session.Unsubscribe(MAPS_CHANGED,
206			#self._OnMsgMapsChanged)
207			#except ConnectorError:
208			#pass
209	jonathan	562	self.__DeleteAllItems()
210
211			self.map = map
212
213			if self.map is not None:
214			for msg, func in sub_list: self.map.Subscribe(msg, func)
215	jonathan	572	#self.mainWindow.application.session.Subscribe(MAPS_CHANGED,
216			#self._OnMsgMapsChanged)
217			#self.mainWindow.application.Subscribe(SESSION_REPLACED,
218			#self._OnMsgMapsChanged)
219	jonathan	562	self.__FillTree(self.map)
220
221
222	jonathan	542	def MoveCurrentItemUp(self):
223			cur_id = self.GetSelection()
224	jonathan	605	assert cur_id.IsOk()
225	jonathan	542
226			cur_data = self.GetPyData(cur_id)
227
228			#prev_id = self.GetPrevSibling(cur_id)
229
230			#
231			# Get out if there's nowhere to go
232			#
233			#if prev_id == INVALID_TREE_ID: return
234
235			if isinstance(cur_data, Layer):
236			self.map.RaiseLayer(cur_data)
237			elif isinstance(cur_data, ClassGroup):
238			pass
239			else:
240	jonathan	605	assert False, "Shouldn't be here."
241	jonathan	542	pass
242
243			def MoveCurrentItemDown(self):
244			cur_id = self.GetSelection()
245	jonathan	605	assert cur_id.IsOk()
246	jonathan	542
247			cur_data = self.GetPyData(cur_id)
248
249			if isinstance(cur_data, Layer):
250			self.map.LowerLayer(cur_data)
251			elif isinstance(cur_data, ClassGroup):
252			pass
253			else:
254	jonathan	605	assert False, "Shouldn't be here."
255	jonathan	542	pass
256
257
258			def OnCompareItems(self, item1, item2):
259
260			data1 = self.GetPyData(item1)
261			data2 = self.GetPyData(item2)
262
263			if isinstance(data1, Layer):
264			layers = self.map.Layers()
265			return layers.index(data2) - layers.index(data1)
266			else:
267			return wxTreeCtrl.OnCompareItems(self, item1, item2)
268
269
270			def DoOnShowLayer(self):
271	jonathan	572	#self.__ShowHideLayer(True)
272			layer, group = self.GetSelectedHierarchy()
273			layer.SetVisible(True)
274	jonathan	542
275			def DoOnHideLayer(self):
276	jonathan	572	#self.__ShowHideLayer(False)
277			layer, group = self.GetSelectedHierarchy()
278			layer.SetVisible(False)
279	jonathan	542
280			def Sort(self):
281			self.SortChildren(self.GetRootItem())
282
283	jonathan	655	def GetSelectedHierarchy(self):
284			id = self.GetSelection()
285
286			if not id.IsOk():
287			return (None, None)
288
289			layer = self.GetPyData(id)
290			group = None
291
292			if isinstance(layer, ClassGroup):
293			id = self.GetItemParent(id)
294			assert id.IsOk()
295			group = layer
296			layer = self.GetPyData(id)
297
298			return (layer, group)
299
300	jonathan	572	def _OnMsgMapsChanged(self):
301	jonathan	639	#print self.map is self.mainWindow.Map()
302	jonathan	572	self.SetMap(self.mainWindow.Map())
303
304	jonathan	542	def _OnSelChanged(self, event):
305	jonathan	655	self.__UpdateSelection()
306	jonathan	542
307			def _OnItemActivated(self, event):
308	jonathan	639	self.parent.DoOnProperties()
309	jonathan	542
310			def _OnMsgLayerChanged(self, layer):
311	jonathan	605	assert isinstance(layer, Layer)
312	jonathan	542
313			id = self.layer2id[layer]
314	jonathan	605	assert id.IsOk()
315	jonathan	542
316	jonathan	578	# XXX: yikes! this is so bad, we should be doing what is
317			# commented out, but there is a problem with keeping
318			# track of the images in the image list when we replace
319			# a layer. it ends up causing a seg fault.
320			self.__FillTree(self.map)
321	jonathan	655	self.__UpdateSelection()
322	jonathan	578	#self.__FillTreeLayer(id)
323	jonathan	542
324			def _OnMsgMapStackingChanged(self, *args):
325			self.Sort()
326	jonathan	562	id = self.GetSelection()
327	jonathan	542
328	jonathan	562	if id.IsOk():
329			self.EnsureVisible(id)
330	jonathan	655	self.__UpdateSelection()
331	jonathan	562
332			def _OnMsgMapLayersAddedRemoved(self, map):
333	jonathan	605	assert map is self.map
334	jonathan	542
335			self.__FillTree(self.map)
336	jonathan	655	self.__UpdateSelection()
337	jonathan	542
338	jonathan	572	def _OnMsgLayerVisibilityChanged(self, layer):
339	jonathan	605	assert isinstance(layer, Layer)
340	jonathan	572
341			self.__ShowHideLayer(layer)
342	jonathan	655	self.__UpdateSelection()
343	jonathan	572
344	jonathan	652	def _OnMsgLayerTitleChanged(self, layer):
345
346			id = self.layer2id[layer]
347			if id.IsOk():
348			self.SetItemText(id, layer.Title())
349	jonathan	655	self.__UpdateSelection()
350	jonathan	652
351	jonathan	655	def __UpdateSelection(self):
352			layer, group = self.GetSelectedHierarchy()
353			self.parent.DoOnSelChanged(layer, group)
354
355	jonathan	542	def __FillTree(self, map):
356
357	jonathan	605	assert isinstance(map, Map)
358	jonathan	542
359			self.Freeze()
360
361			self.__DeleteAllItems()
362
363			if map.HasLayers():
364
365			self.image_list = wxImageList(BMP_SIZE_W, BMP_SIZE_H, False, 0)
366
367			bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)
368			dc = wxMemoryDC()
369			dc.SelectObject(bmp)
370			dc.SetBrush(wxBLACK_BRUSH)
371			dc.Clear()
372			dc.SelectObject(wxNullBitmap)
373
374			self.emptyImageIndex = \
375			self.image_list.AddWithColourMask(bmp, wxColour(0, 0, 0))
376
377			self.AssignImageList(self.image_list)
378
379			root = self.AddRoot("")
380
381			for l in map.Layers():
382			id = self.PrependItem(root, l.Title())
383			l.Subscribe(LAYER_CHANGED, self._OnMsgLayerChanged)
384	jonathan	572	l.Subscribe(LAYER_VISIBILITY_CHANGED,
385			self._OnMsgLayerVisibilityChanged)
386	jonathan	652	l.Subscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)
387	jonathan	542	self.SetPyData(id, l)
388	jonathan	632	self.__SetVisibilityStyle(l.Visible(), id)
389	jonathan	542
390			self.layer2id[l] = id
391
392			self.__FillTreeLayer(id)
393			self.Expand(id)
394
395			self.Thaw()
396
397			def __FillTreeLayer(self, pid):
398			layer = self.GetPyData(pid)
399
400			self.Freeze()
401
402			self.DeleteChildren(pid)
403
404			clazz = layer.GetClassification()
405
406			shapeType = layer.ShapeType()
407
408	jonathan	632	show = layer.Visible()
409	jonathan	542	for g in clazz:
410	jonathan	639	if g.IsVisible():
411			id = self.AppendItem(pid, g.GetDisplayText())
412			self.SetPyData(id, g)
413			self.__SetVisibilityStyle(show, id)
414	jonathan	542
415	jonathan	639	bmp = self.__BuildGroupImage(g, shapeType)
416	jonathan	542
417	jonathan	639	if bmp is None:
418			self.SetItemImage(id, self.emptyImageIndex)
419			else:
420			i = self.image_list.Add(bmp)
421			self.SetItemImage(id, i)
422	jonathan	542
423			self.Thaw()
424
425			def __BuildGroupImage(self, group, shapeType):
426	jonathan	605	assert isinstance(group, ClassGroup)
427	jonathan	542
428			bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)
429			#brush = wxBrush(Color2wxColour(item[1]), wxSOLID)
430			dc = wxMemoryDC()
431			dc.SelectObject(bmp)
432			dc.Clear()
433
434			self.previewer.Draw(dc, None, group.GetProperties(), shapeType)
435
436			return bmp
437
438			def __DeleteAllItems(self):
439
440	jonathan	572	while len(self.layer2id) > 0:
441			layer, id = self.layer2id.popitem()
442			layer.Unsubscribe(LAYER_CHANGED,
443			self._OnMsgLayerChanged)
444			layer.Unsubscribe(LAYER_VISIBILITY_CHANGED,
445			self._OnMsgLayerVisibilityChanged)
446	jonathan	652	layer.Unsubscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)
447	jonathan	542
448	jonathan	578	self.DeleteAllItems()
449
450	jonathan	632	def __SetVisibilityStyle(self, visible, id):
451	jonathan	572	font = self.GetItemFont(id)
452	jonathan	542
453	jonathan	632	if visible:
454	jonathan	572	font.SetStyle(wxNORMAL)
455			color = wxBLACK
456			else:
457			font.SetStyle(wxITALIC)
458			color = wxLIGHT_GREY
459	jonathan	542
460	jonathan	572	self.SetItemTextColour(id, color)
461			self.SetItemFont(id, font)
462
463			def __ShowHideLayer(self, layer):
464			parent = self.layer2id[layer]
465	jonathan	605	assert parent.IsOk()
466	jonathan	542
467	jonathan	632	visible = layer.Visible()
468	jonathan	542
469	jonathan	632	self.__SetVisibilityStyle(visible, parent)
470	jonathan	542
471	jonathan	572	id, cookie = self.GetFirstChild(parent, 123)
472	jonathan	542
473	jonathan	572	while id.IsOk():
474	jonathan	632	self.__SetVisibilityStyle(visible, id)
475	jonathan	572	id, cookie = self.GetNextChild(parent, cookie)
476
Name	Value
svn:eol-style	native
svn:keywords	Author Date Id Revision