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)

        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, 4)

        panelBox.Fit(self)

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

        self.panelBox = panelBox

        self.__EnableButtons(False)

        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):
        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 _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 _OnMsgLayerTitleChanged(self, layer):

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

    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)
                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	542
58	jonathan	652	bmp = resource.GetBitmapResource(RAISE_BMP, wxBITMAP_TYPE_XPM)
59			self.toolBar.AddTool(ID_LEGEND_RAISE, bmp,
60			shortHelpString=_("Raise Layer"))
61	jonathan	542
62	jonathan	652	bmp = resource.GetBitmapResource(LOWER_BMP, wxBITMAP_TYPE_XPM)
63			self.toolBar.AddTool(ID_LEGEND_LOWER, bmp,
64			shortHelpString=_("Lower Layer"))
65	jonathan	542
66	jonathan	652	bmp = resource.GetBitmapResource(SHOW_BMP, wxBITMAP_TYPE_XPM)
67			self.toolBar.AddTool(ID_LEGEND_SHOWLAYER, bmp,
68			shortHelpString=_("Show Layer"))
69	jonathan	542
70	jonathan	652	bmp = resource.GetBitmapResource(HIDE_BMP, wxBITMAP_TYPE_XPM)
71			self.toolBar.AddTool(ID_LEGEND_HIDELAYER, bmp,
72			shortHelpString=_("Hide Layer"))
73	jonathan	542
74	jonathan	652	bmp = resource.GetBitmapResource(PROPS_BMP, wxBITMAP_TYPE_XPM)
75			self.toolBar.AddTool(ID_LEGEND_PROPS, bmp,
76			shortHelpString=_("Edit Layer Properties"))
77	jonathan	542
78	jonathan	652	self.toolBar.Realize()
79			panelBox.Add(self.toolBar, 0, wxALL, 0)
80	jonathan	542
81	jonathan	652	EVT_TOOL(self, ID_LEGEND_RAISE, self._OnMoveUp)
82			EVT_TOOL(self, ID_LEGEND_LOWER, self._OnMoveDown)
83			EVT_TOOL(self, ID_LEGEND_PROPS, self._OnProperties)
84			EVT_TOOL(self, ID_LEGEND_SHOWLAYER, self._OnShowLayer)
85			EVT_TOOL(self, ID_LEGEND_HIDELAYER, self._OnHideLayer)
86	jonathan	542
87	jonathan	562	self.tree = LegendTree(self, ID_LEGEND_TREE, map, mainWindow)
88	jonathan	542
89			panelBox.Add(self.tree, 1, wxGROW, 4)
90
91	jonathan	572	panelBox.Fit(self)
92
93	jonathan	562	self.SetAutoLayout(True)
94			self.SetSizer(panelBox)
95	jonathan	542	panelBox.SetSizeHints(self)
96
97	jonathan	562	self.panelBox = panelBox
98	jonathan	542
99	jonathan	652	self.__EnableButtons(False)
100
101	jonathan	572	EVT_CLOSE(self, self._OnClose)
102
103
104	jonathan	562	def GetMap(self):
105			return self.tree.GetMap()
106
107			def SetMap(self, map):
108			self.tree.SetMap(map)
109
110	jonathan	572	def DoOnSelChanged(self, layer, group):
111	jonathan	542
112	jonathan	572	ok = isinstance(layer, Layer)
113			self.__EnableButtons(ok)
114
115			if ok:
116	jonathan	568	self.mainWindow.SelectLayer(layer)
117
118	jonathan	639	def DoOnProperties(self):
119	jonathan	572	list = self.tree.GetSelectedHierarchy()
120
121			ok = isinstance(list[0], Layer)
122			if ok:
123	jonathan	639	self.mainWindow.OpenLayerProperties(list[0], list[1])
124	jonathan	572
125	jonathan	578	def Destroy(self):
126			self.__Close()
127
128	jonathan	639	def _OnProperties(self, event):
129			self.DoOnProperties()
130	jonathan	542
131			def _OnMoveUp(self, event):
132			self.tree.MoveCurrentItemUp()
133
134			def _OnMoveDown(self, event):
135			self.tree.MoveCurrentItemDown()
136
137			def _OnShowLayer(self, event):
138			self.tree.DoOnShowLayer()
139			pass
140
141	jonathan	578	#def Close(self, force = False):
142			#DockPanel.Close(self, force)
143
144	jonathan	572	def _OnClose(self, event):
145	jonathan	578	self.__Close()
146	jonathan	572
147	jonathan	542	def _OnHideLayer(self, event):
148			self.tree.DoOnHideLayer()
149			pass
150
151			def __EnableButtons(self, on):
152	jonathan	652	self.toolBar.EnableTool(ID_LEGEND_RAISE, on)
153			self.toolBar.EnableTool(ID_LEGEND_LOWER, on)
154			self.toolBar.EnableTool(ID_LEGEND_SHOWLAYER, on)
155			self.toolBar.EnableTool(ID_LEGEND_HIDELAYER, on)
156			self.toolBar.EnableTool(ID_LEGEND_PROPS, on)
157	jonathan	542
158	jonathan	578	def __Close(self):
159			self.tree.Close()
160
161	jonathan	542	class LegendTree(wxTreeCtrl):
162
163	jonathan	562	def __init__(self, parent, id, map, mainWindow):
164	jonathan	542	wxTreeCtrl.__init__(self, parent, id,
165			style = wxTR_DEFAULT_STYLE \| wxTR_HIDE_ROOT,
166			size = (200, 200))
167
168	jonathan	572	self.mainWindow = mainWindow
169	jonathan	562	self.map = None
170	jonathan	542	self.parent = parent
171	jonathan	572	self.layer2id = {}
172	jonathan	542
173			self.image_list = None
174			self.emptyImageIndex = 0
175
176			self.previewer = ClassDataPreviewer()
177
178			EVT_TREE_ITEM_ACTIVATED(self, ID_LEGEND_TREE, self._OnItemActivated)
179			EVT_TREE_SEL_CHANGED(self, ID_LEGEND_TREE, self._OnSelChanged)
180
181	jonathan	572	EVT_CLOSE(self, self._OnClose)
182
183	jonathan	562	self.SetMap(map)
184	jonathan	542
185	jonathan	572	def _OnClose(self, event):
186			self.SetMap(None)
187
188	jonathan	562	def GetMap(self):
189			return self.map
190	jonathan	542
191	jonathan	562	def SetMap(self, map):
192
193			sub_list = [(MAP_STACKING_CHANGED, self._OnMsgMapStackingChanged),
194			(MAP_LAYERS_ADDED, self._OnMsgMapLayersAddedRemoved),
195			(MAP_LAYERS_REMOVED, self._OnMsgMapLayersAddedRemoved)]
196
197			if self.map is not None:
198			for msg, func in sub_list: self.map.Unsubscribe(msg, func)
199	jonathan	572	#self.mainWindow.application.Unsubscribe(SESSION_REPLACED,
200			#self._OnMsgMapsChanged)
201			#try:
202			#self.mainWindow.application.session.Unsubscribe(MAPS_CHANGED,
203			#self._OnMsgMapsChanged)
204			#except ConnectorError:
205			#pass
206	jonathan	562	self.__DeleteAllItems()
207
208			self.map = map
209
210			if self.map is not None:
211			for msg, func in sub_list: self.map.Subscribe(msg, func)
212	jonathan	572	#self.mainWindow.application.session.Subscribe(MAPS_CHANGED,
213			#self._OnMsgMapsChanged)
214			#self.mainWindow.application.Subscribe(SESSION_REPLACED,
215			#self._OnMsgMapsChanged)
216	jonathan	562	self.__FillTree(self.map)
217
218
219	jonathan	542	def MoveCurrentItemUp(self):
220			cur_id = self.GetSelection()
221	jonathan	605	assert cur_id.IsOk()
222	jonathan	542
223			cur_data = self.GetPyData(cur_id)
224
225			#prev_id = self.GetPrevSibling(cur_id)
226
227			#
228			# Get out if there's nowhere to go
229			#
230			#if prev_id == INVALID_TREE_ID: return
231
232			if isinstance(cur_data, Layer):
233			self.map.RaiseLayer(cur_data)
234			elif isinstance(cur_data, ClassGroup):
235			pass
236			else:
237	jonathan	605	assert False, "Shouldn't be here."
238	jonathan	542	pass
239
240			def MoveCurrentItemDown(self):
241			cur_id = self.GetSelection()
242	jonathan	605	assert cur_id.IsOk()
243	jonathan	542
244			cur_data = self.GetPyData(cur_id)
245
246			if isinstance(cur_data, Layer):
247			self.map.LowerLayer(cur_data)
248			elif isinstance(cur_data, ClassGroup):
249			pass
250			else:
251	jonathan	605	assert False, "Shouldn't be here."
252	jonathan	542	pass
253
254
255			def OnCompareItems(self, item1, item2):
256
257			data1 = self.GetPyData(item1)
258			data2 = self.GetPyData(item2)
259
260			if isinstance(data1, Layer):
261			layers = self.map.Layers()
262			return layers.index(data2) - layers.index(data1)
263			else:
264			return wxTreeCtrl.OnCompareItems(self, item1, item2)
265
266
267			def DoOnShowLayer(self):
268	jonathan	572	#self.__ShowHideLayer(True)
269			layer, group = self.GetSelectedHierarchy()
270			layer.SetVisible(True)
271	jonathan	542
272			def DoOnHideLayer(self):
273	jonathan	572	#self.__ShowHideLayer(False)
274			layer, group = self.GetSelectedHierarchy()
275			layer.SetVisible(False)
276	jonathan	542
277			def Sort(self):
278			self.SortChildren(self.GetRootItem())
279
280	jonathan	572	def _OnMsgMapsChanged(self):
281	jonathan	639	#print self.map is self.mainWindow.Map()
282	jonathan	572	self.SetMap(self.mainWindow.Map())
283
284	jonathan	542	def _OnSelChanged(self, event):
285
286	jonathan	572	layer, group = self.GetSelectedHierarchy()
287	jonathan	568	self.parent.DoOnSelChanged(layer, group)
288
289	jonathan	542	def _OnItemActivated(self, event):
290	jonathan	639	self.parent.DoOnProperties()
291	jonathan	542
292			def _OnMsgLayerChanged(self, layer):
293	jonathan	605	assert isinstance(layer, Layer)
294	jonathan	542
295			id = self.layer2id[layer]
296	jonathan	605	assert id.IsOk()
297	jonathan	542
298	jonathan	578	# XXX: yikes! this is so bad, we should be doing what is
299			# commented out, but there is a problem with keeping
300			# track of the images in the image list when we replace
301			# a layer. it ends up causing a seg fault.
302			self.__FillTree(self.map)
303			#self.__FillTreeLayer(id)
304	jonathan	542
305			def _OnMsgMapStackingChanged(self, *args):
306			self.Sort()
307	jonathan	562	id = self.GetSelection()
308	jonathan	542
309	jonathan	562	if id.IsOk():
310			self.EnsureVisible(id)
311
312			def _OnMsgMapLayersAddedRemoved(self, map):
313	jonathan	605	assert map is self.map
314	jonathan	542
315			self.__FillTree(self.map)
316
317	jonathan	572	def _OnMsgLayerVisibilityChanged(self, layer):
318	jonathan	605	assert isinstance(layer, Layer)
319	jonathan	572
320			self.__ShowHideLayer(layer)
321
322	jonathan	652	def _OnMsgLayerTitleChanged(self, layer):
323
324			id = self.layer2id[layer]
325			if id.IsOk():
326			self.SetItemText(id, layer.Title())
327
328	jonathan	572	def GetSelectedHierarchy(self):
329			id = self.GetSelection()
330	jonathan	605	assert id.IsOk()
331	jonathan	572
332			layer = self.GetPyData(id)
333			group = None
334
335			if isinstance(layer, ClassGroup):
336			id = self.GetItemParent(id)
337	jonathan	605	assert id.IsOk()
338	jonathan	572	group = layer
339			layer = self.GetPyData(id)
340
341			return (layer, group)
342
343	jonathan	542	def __FillTree(self, map):
344
345	jonathan	605	assert isinstance(map, Map)
346	jonathan	542
347			self.Freeze()
348
349			self.__DeleteAllItems()
350
351			if map.HasLayers():
352
353			self.image_list = wxImageList(BMP_SIZE_W, BMP_SIZE_H, False, 0)
354
355			bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)
356			dc = wxMemoryDC()
357			dc.SelectObject(bmp)
358			dc.SetBrush(wxBLACK_BRUSH)
359			dc.Clear()
360			dc.SelectObject(wxNullBitmap)
361
362			self.emptyImageIndex = \
363			self.image_list.AddWithColourMask(bmp, wxColour(0, 0, 0))
364
365			self.AssignImageList(self.image_list)
366
367			root = self.AddRoot("")
368
369			for l in map.Layers():
370			id = self.PrependItem(root, l.Title())
371			l.Subscribe(LAYER_CHANGED, self._OnMsgLayerChanged)
372	jonathan	572	l.Subscribe(LAYER_VISIBILITY_CHANGED,
373			self._OnMsgLayerVisibilityChanged)
374	jonathan	652	l.Subscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)
375	jonathan	542	self.SetPyData(id, l)
376	jonathan	632	self.__SetVisibilityStyle(l.Visible(), id)
377	jonathan	542
378			self.layer2id[l] = id
379
380			self.__FillTreeLayer(id)
381			self.Expand(id)
382
383			self.Thaw()
384
385			def __FillTreeLayer(self, pid):
386			layer = self.GetPyData(pid)
387
388			self.Freeze()
389
390			self.DeleteChildren(pid)
391
392			clazz = layer.GetClassification()
393
394			shapeType = layer.ShapeType()
395
396	jonathan	632	show = layer.Visible()
397	jonathan	542	for g in clazz:
398	jonathan	639	if g.IsVisible():
399			id = self.AppendItem(pid, g.GetDisplayText())
400			self.SetPyData(id, g)
401			self.__SetVisibilityStyle(show, id)
402	jonathan	542
403	jonathan	639	bmp = self.__BuildGroupImage(g, shapeType)
404	jonathan	542
405	jonathan	639	if bmp is None:
406			self.SetItemImage(id, self.emptyImageIndex)
407			else:
408			i = self.image_list.Add(bmp)
409			self.SetItemImage(id, i)
410	jonathan	542
411			self.Thaw()
412
413			def __BuildGroupImage(self, group, shapeType):
414	jonathan	605	assert isinstance(group, ClassGroup)
415	jonathan	542
416			bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)
417			#brush = wxBrush(Color2wxColour(item[1]), wxSOLID)
418			dc = wxMemoryDC()
419			dc.SelectObject(bmp)
420			dc.Clear()
421
422			self.previewer.Draw(dc, None, group.GetProperties(), shapeType)
423
424			return bmp
425
426			def __DeleteAllItems(self):
427
428	jonathan	572	while len(self.layer2id) > 0:
429			layer, id = self.layer2id.popitem()
430			layer.Unsubscribe(LAYER_CHANGED,
431			self._OnMsgLayerChanged)
432			layer.Unsubscribe(LAYER_VISIBILITY_CHANGED,
433			self._OnMsgLayerVisibilityChanged)
434	jonathan	652	layer.Unsubscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)
435	jonathan	542
436	jonathan	578	self.DeleteAllItems()
437
438	jonathan	632	def __SetVisibilityStyle(self, visible, id):
439	jonathan	572	font = self.GetItemFont(id)
440	jonathan	542
441	jonathan	632	if visible:
442	jonathan	572	font.SetStyle(wxNORMAL)
443			color = wxBLACK
444			else:
445			font.SetStyle(wxITALIC)
446			color = wxLIGHT_GREY
447	jonathan	542
448	jonathan	572	self.SetItemTextColour(id, color)
449			self.SetItemFont(id, font)
450
451			def __ShowHideLayer(self, layer):
452			parent = self.layer2id[layer]
453	jonathan	605	assert parent.IsOk()
454	jonathan	542
455	jonathan	632	visible = layer.Visible()
456	jonathan	542
457	jonathan	632	self.__SetVisibilityStyle(visible, parent)
458	jonathan	542
459	jonathan	572	id, cookie = self.GetFirstChild(parent, 123)
460	jonathan	542
461	jonathan	572	while id.IsOk():
462	jonathan	632	self.__SetVisibilityStyle(visible, id)
463	jonathan	572	id, cookie = self.GetNextChild(parent, cookie)
464
Name	Value
svn:eol-style	native
svn:keywords	Author Date Id Revision