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, wxGROW, 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)

        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	jonathan	668	panelBox.Add(self.toolBar, 0, wxGROW, 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	562	self.SetAutoLayout(True)
93			self.SetSizer(panelBox)
94	jonathan	542	panelBox.SetSizeHints(self)
95
96	jonathan	658
97	jonathan	562	self.panelBox = panelBox
98	jonathan	542
99	jonathan	652	self.__EnableButtons(False)
100
101	jonathan	658	self.Create()
102
103	jonathan	572	EVT_CLOSE(self, self._OnClose)
104
105
106	jonathan	562	def GetMap(self):
107			return self.tree.GetMap()
108
109			def SetMap(self, map):
110			self.tree.SetMap(map)
111
112	jonathan	572	def DoOnSelChanged(self, layer, group):
113	jonathan	542
114	jonathan	572	ok = isinstance(layer, Layer)
115			self.__EnableButtons(ok)
116
117	jonathan	655	self.mainWindow.SelectLayer(layer)
118	jonathan	568
119	jonathan	639	def DoOnProperties(self):
120	jonathan	572	list = self.tree.GetSelectedHierarchy()
121
122			ok = isinstance(list[0], Layer)
123			if ok:
124	jonathan	639	self.mainWindow.OpenLayerProperties(list[0], list[1])
125	jonathan	572
126	jonathan	578	def Destroy(self):
127			self.__Close()
128
129	jonathan	639	def _OnProperties(self, event):
130			self.DoOnProperties()
131	jonathan	542
132			def _OnMoveUp(self, event):
133			self.tree.MoveCurrentItemUp()
134
135			def _OnMoveDown(self, event):
136			self.tree.MoveCurrentItemDown()
137
138			def _OnShowLayer(self, event):
139			self.tree.DoOnShowLayer()
140			pass
141
142	jonathan	578	#def Close(self, force = False):
143			#DockPanel.Close(self, force)
144
145	jonathan	572	def _OnClose(self, event):
146	jonathan	578	self.__Close()
147	jonathan	572
148	jonathan	542	def _OnHideLayer(self, event):
149			self.tree.DoOnHideLayer()
150			pass
151
152			def __EnableButtons(self, on):
153	jonathan	652	self.toolBar.EnableTool(ID_LEGEND_RAISE, on)
154			self.toolBar.EnableTool(ID_LEGEND_LOWER, on)
155			self.toolBar.EnableTool(ID_LEGEND_SHOWLAYER, on)
156			self.toolBar.EnableTool(ID_LEGEND_HIDELAYER, on)
157			self.toolBar.EnableTool(ID_LEGEND_PROPS, on)
158	jonathan	542
159	jonathan	578	def __Close(self):
160			self.tree.Close()
161
162	jonathan	542	class LegendTree(wxTreeCtrl):
163
164	jonathan	562	def __init__(self, parent, id, map, mainWindow):
165	jonathan	542	wxTreeCtrl.__init__(self, parent, id,
166			style = wxTR_DEFAULT_STYLE \| wxTR_HIDE_ROOT,
167			size = (200, 200))
168
169	jonathan	572	self.mainWindow = mainWindow
170	jonathan	562	self.map = None
171	jonathan	542	self.parent = parent
172	jonathan	572	self.layer2id = {}
173	jonathan	542
174			self.image_list = None
175			self.emptyImageIndex = 0
176
177			self.previewer = ClassDataPreviewer()
178
179			EVT_TREE_ITEM_ACTIVATED(self, ID_LEGEND_TREE, self._OnItemActivated)
180			EVT_TREE_SEL_CHANGED(self, ID_LEGEND_TREE, self._OnSelChanged)
181
182	jonathan	572	EVT_CLOSE(self, self._OnClose)
183
184	jonathan	562	self.SetMap(map)
185	jonathan	542
186	jonathan	572	def _OnClose(self, event):
187			self.SetMap(None)
188
189	jonathan	562	def GetMap(self):
190			return self.map
191	jonathan	542
192	jonathan	562	def SetMap(self, map):
193
194			sub_list = [(MAP_STACKING_CHANGED, self._OnMsgMapStackingChanged),
195			(MAP_LAYERS_ADDED, self._OnMsgMapLayersAddedRemoved),
196			(MAP_LAYERS_REMOVED, self._OnMsgMapLayersAddedRemoved)]
197
198			if self.map is not None:
199			for msg, func in sub_list: self.map.Unsubscribe(msg, func)
200	jonathan	572	#self.mainWindow.application.Unsubscribe(SESSION_REPLACED,
201			#self._OnMsgMapsChanged)
202			#try:
203			#self.mainWindow.application.session.Unsubscribe(MAPS_CHANGED,
204			#self._OnMsgMapsChanged)
205			#except ConnectorError:
206			#pass
207	jonathan	562	self.__DeleteAllItems()
208
209			self.map = map
210
211			if self.map is not None:
212			for msg, func in sub_list: self.map.Subscribe(msg, func)
213	jonathan	572	#self.mainWindow.application.session.Subscribe(MAPS_CHANGED,
214			#self._OnMsgMapsChanged)
215			#self.mainWindow.application.Subscribe(SESSION_REPLACED,
216			#self._OnMsgMapsChanged)
217	jonathan	562	self.__FillTree(self.map)
218
219
220	jonathan	542	def MoveCurrentItemUp(self):
221			cur_id = self.GetSelection()
222	jonathan	605	assert cur_id.IsOk()
223	jonathan	542
224			cur_data = self.GetPyData(cur_id)
225
226			#prev_id = self.GetPrevSibling(cur_id)
227
228			#
229			# Get out if there's nowhere to go
230			#
231			#if prev_id == INVALID_TREE_ID: return
232
233			if isinstance(cur_data, Layer):
234			self.map.RaiseLayer(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			def MoveCurrentItemDown(self):
242			cur_id = self.GetSelection()
243	jonathan	605	assert cur_id.IsOk()
244	jonathan	542
245			cur_data = self.GetPyData(cur_id)
246
247			if isinstance(cur_data, Layer):
248			self.map.LowerLayer(cur_data)
249			elif isinstance(cur_data, ClassGroup):
250			pass
251			else:
252	jonathan	605	assert False, "Shouldn't be here."
253	jonathan	542	pass
254
255
256			def OnCompareItems(self, item1, item2):
257
258			data1 = self.GetPyData(item1)
259			data2 = self.GetPyData(item2)
260
261			if isinstance(data1, Layer):
262			layers = self.map.Layers()
263			return layers.index(data2) - layers.index(data1)
264			else:
265			return wxTreeCtrl.OnCompareItems(self, item1, item2)
266
267
268			def DoOnShowLayer(self):
269	jonathan	572	#self.__ShowHideLayer(True)
270			layer, group = self.GetSelectedHierarchy()
271			layer.SetVisible(True)
272	jonathan	542
273			def DoOnHideLayer(self):
274	jonathan	572	#self.__ShowHideLayer(False)
275			layer, group = self.GetSelectedHierarchy()
276			layer.SetVisible(False)
277	jonathan	542
278			def Sort(self):
279			self.SortChildren(self.GetRootItem())
280
281	jonathan	655	def GetSelectedHierarchy(self):
282			id = self.GetSelection()
283
284			if not id.IsOk():
285			return (None, None)
286
287			layer = self.GetPyData(id)
288			group = None
289
290			if isinstance(layer, ClassGroup):
291			id = self.GetItemParent(id)
292			assert id.IsOk()
293			group = layer
294			layer = self.GetPyData(id)
295
296			return (layer, group)
297
298	jonathan	572	def _OnMsgMapsChanged(self):
299	jonathan	639	#print self.map is self.mainWindow.Map()
300	jonathan	572	self.SetMap(self.mainWindow.Map())
301
302	jonathan	542	def _OnSelChanged(self, event):
303	jonathan	655	self.__UpdateSelection()
304	jonathan	542
305			def _OnItemActivated(self, event):
306	jonathan	639	self.parent.DoOnProperties()
307	jonathan	542
308			def _OnMsgLayerChanged(self, layer):
309	jonathan	605	assert isinstance(layer, Layer)
310	jonathan	542
311			id = self.layer2id[layer]
312	jonathan	605	assert id.IsOk()
313	jonathan	542
314	jonathan	578	# XXX: yikes! this is so bad, we should be doing what is
315			# commented out, but there is a problem with keeping
316			# track of the images in the image list when we replace
317			# a layer. it ends up causing a seg fault.
318			self.__FillTree(self.map)
319	jonathan	655	self.__UpdateSelection()
320	jonathan	578	#self.__FillTreeLayer(id)
321	jonathan	542
322			def _OnMsgMapStackingChanged(self, *args):
323			self.Sort()
324	jonathan	562	id = self.GetSelection()
325	jonathan	542
326	jonathan	562	if id.IsOk():
327			self.EnsureVisible(id)
328	jonathan	655	self.__UpdateSelection()
329	jonathan	562
330			def _OnMsgMapLayersAddedRemoved(self, map):
331	jonathan	605	assert map is self.map
332	jonathan	542
333			self.__FillTree(self.map)
334	jonathan	655	self.__UpdateSelection()
335	jonathan	542
336	jonathan	572	def _OnMsgLayerVisibilityChanged(self, layer):
337	jonathan	605	assert isinstance(layer, Layer)
338	jonathan	572
339			self.__ShowHideLayer(layer)
340	jonathan	655	self.__UpdateSelection()
341	jonathan	572
342	jonathan	652	def _OnMsgLayerTitleChanged(self, layer):
343
344			id = self.layer2id[layer]
345			if id.IsOk():
346			self.SetItemText(id, layer.Title())
347	jonathan	655	self.__UpdateSelection()
348	jonathan	652
349	jonathan	655	def __UpdateSelection(self):
350			layer, group = self.GetSelectedHierarchy()
351			self.parent.DoOnSelChanged(layer, group)
352
353	jonathan	542	def __FillTree(self, map):
354
355	jonathan	605	assert isinstance(map, Map)
356	jonathan	542
357			self.Freeze()
358
359			self.__DeleteAllItems()
360
361			if map.HasLayers():
362
363			self.image_list = wxImageList(BMP_SIZE_W, BMP_SIZE_H, False, 0)
364
365			bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)
366			dc = wxMemoryDC()
367			dc.SelectObject(bmp)
368			dc.SetBrush(wxBLACK_BRUSH)
369			dc.Clear()
370			dc.SelectObject(wxNullBitmap)
371
372			self.emptyImageIndex = \
373			self.image_list.AddWithColourMask(bmp, wxColour(0, 0, 0))
374
375			self.AssignImageList(self.image_list)
376
377			root = self.AddRoot("")
378
379			for l in map.Layers():
380			id = self.PrependItem(root, l.Title())
381			l.Subscribe(LAYER_CHANGED, self._OnMsgLayerChanged)
382	jonathan	572	l.Subscribe(LAYER_VISIBILITY_CHANGED,
383			self._OnMsgLayerVisibilityChanged)
384	jonathan	652	l.Subscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)
385	jonathan	542	self.SetPyData(id, l)
386	jonathan	632	self.__SetVisibilityStyle(l.Visible(), id)
387	jonathan	542
388			self.layer2id[l] = id
389
390			self.__FillTreeLayer(id)
391			self.Expand(id)
392
393			self.Thaw()
394
395			def __FillTreeLayer(self, pid):
396			layer = self.GetPyData(pid)
397
398			self.Freeze()
399
400			self.DeleteChildren(pid)
401
402			clazz = layer.GetClassification()
403
404			shapeType = layer.ShapeType()
405
406	jonathan	632	show = layer.Visible()
407	jonathan	542	for g in clazz:
408	jonathan	639	if g.IsVisible():
409			id = self.AppendItem(pid, g.GetDisplayText())
410			self.SetPyData(id, g)
411			self.__SetVisibilityStyle(show, id)
412	jonathan	542
413	jonathan	639	bmp = self.__BuildGroupImage(g, shapeType)
414	jonathan	542
415	jonathan	639	if bmp is None:
416			self.SetItemImage(id, self.emptyImageIndex)
417			else:
418			i = self.image_list.Add(bmp)
419			self.SetItemImage(id, i)
420	jonathan	542
421			self.Thaw()
422
423			def __BuildGroupImage(self, group, shapeType):
424	jonathan	605	assert isinstance(group, ClassGroup)
425	jonathan	542
426			bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)
427			#brush = wxBrush(Color2wxColour(item[1]), wxSOLID)
428			dc = wxMemoryDC()
429			dc.SelectObject(bmp)
430			dc.Clear()
431
432			self.previewer.Draw(dc, None, group.GetProperties(), shapeType)
433
434			return bmp
435
436			def __DeleteAllItems(self):
437
438	jonathan	572	while len(self.layer2id) > 0:
439			layer, id = self.layer2id.popitem()
440			layer.Unsubscribe(LAYER_CHANGED,
441			self._OnMsgLayerChanged)
442			layer.Unsubscribe(LAYER_VISIBILITY_CHANGED,
443			self._OnMsgLayerVisibilityChanged)
444	jonathan	652	layer.Unsubscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)
445	jonathan	542
446	jonathan	578	self.DeleteAllItems()
447
448	jonathan	632	def __SetVisibilityStyle(self, visible, id):
449	jonathan	572	font = self.GetItemFont(id)
450	jonathan	542
451	jonathan	632	if visible:
452	jonathan	572	font.SetStyle(wxNORMAL)
453			color = wxBLACK
454			else:
455			font.SetStyle(wxITALIC)
456			color = wxLIGHT_GREY
457	jonathan	542
458	jonathan	572	self.SetItemTextColour(id, color)
459			self.SetItemFont(id, font)
460
461			def __ShowHideLayer(self, layer):
462			parent = self.layer2id[layer]
463	jonathan	605	assert parent.IsOk()
464	jonathan	542
465	jonathan	632	visible = layer.Visible()
466	jonathan	542
467	jonathan	632	self.__SetVisibilityStyle(visible, parent)
468	jonathan	542
469	jonathan	572	id, cookie = self.GetFirstChild(parent, 123)
470	jonathan	542
471	jonathan	572	while id.IsOk():
472	jonathan	632	self.__SetVisibilityStyle(visible, id)
473	jonathan	572	id, cookie = self.GetNextChild(parent, cookie)
474
Name	Value
svn:eol-style	native
svn:keywords	Author Date Id Revision