| 1 |
# Copyright (c) 2001, 2002, 2003, 2005 by Intevation GmbH |
| 2 |
# Authors: |
| 3 |
# Jonathan Coles <[email protected]> |
| 4 |
# Frank Koormann <[email protected]> |
| 5 |
# |
| 6 |
# This program is free software under the GPL (>=v2) |
| 7 |
# Read the file COPYING coming with Thuban for details. |
| 8 |
|
| 9 |
__version__ = "$Revision$" |
| 10 |
|
| 11 |
from math import fabs, cos, pi |
| 12 |
|
| 13 |
from Thuban import _ |
| 14 |
|
| 15 |
import resource |
| 16 |
|
| 17 |
import wx |
| 18 |
|
| 19 |
from Thuban.Model.layer import BaseLayer |
| 20 |
from Thuban.Model.map import Map |
| 21 |
from Thuban.Model.classification import ClassGroup |
| 22 |
from Thuban.Model.proj import PROJ_UNITS_DEGREES |
| 23 |
|
| 24 |
from Thuban.Model.messages import \ |
| 25 |
MAP_STACKING_CHANGED, MAP_LAYERS_ADDED, MAP_LAYERS_REMOVED, LAYER_CHANGED,\ |
| 26 |
LAYER_VISIBILITY_CHANGED, TITLE_CHANGED |
| 27 |
|
| 28 |
from Thuban.UI.messages import SCALE_CHANGED |
| 29 |
|
| 30 |
from Thuban.UI.classifier import ClassDataPreviewer |
| 31 |
from Thuban.UI.dock import DockPanel |
| 32 |
from Thuban.UI.scalebar import ScaleBar |
| 33 |
|
| 34 |
from Thuban.UI.menu import Menu |
| 35 |
|
| 36 |
from Thuban.Lib.connector import ConnectorError |
| 37 |
|
| 38 |
ID_LEGEND_TOP = 4001 |
| 39 |
ID_LEGEND_RAISE = 4002 |
| 40 |
ID_LEGEND_LOWER = 4003 |
| 41 |
ID_LEGEND_BOTTOM = 4004 |
| 42 |
ID_LEGEND_TREE = 4005 |
| 43 |
ID_LEGEND_PROPS = 4006 |
| 44 |
ID_LEGEND_SHOWLAYER = 4007 |
| 45 |
ID_LEGEND_HIDELAYER = 4008 |
| 46 |
|
| 47 |
BMP_SIZE_W = 16 |
| 48 |
BMP_SIZE_H = 16 |
| 49 |
|
| 50 |
TOP_BMP = "top_layer" |
| 51 |
RAISE_BMP = "raise_layer" |
| 52 |
LOWER_BMP = "lower_layer" |
| 53 |
BOTTOM_BMP = "bottom_layer" |
| 54 |
SHOW_BMP = "show_layer" |
| 55 |
HIDE_BMP = "hide_layer" |
| 56 |
PROPS_BMP = "layer_properties" |
| 57 |
|
| 58 |
class LegendPanel(DockPanel): |
| 59 |
|
| 60 |
def __init__(self, parent, map, mainWindow): |
| 61 |
DockPanel.__init__(self, parent, -1) |
| 62 |
|
| 63 |
self.mainWindow = mainWindow |
| 64 |
self.parent = parent |
| 65 |
|
| 66 |
self.buttons = [] |
| 67 |
|
| 68 |
panelBox = wx.BoxSizer(wx.VERTICAL) |
| 69 |
|
| 70 |
self.toolBar = wx.ToolBar(self, -1) |
| 71 |
self.toolBar.SetToolBitmapSize(wx.Size(24, 24)) |
| 72 |
|
| 73 |
bmp = resource.GetBitmapResource(TOP_BMP, wx.BITMAP_TYPE_XPM) |
| 74 |
self.toolBar.AddTool(ID_LEGEND_TOP, bmp, |
| 75 |
shortHelpString=_("Top Layer")) |
| 76 |
|
| 77 |
bmp = resource.GetBitmapResource(RAISE_BMP, wx.BITMAP_TYPE_XPM) |
| 78 |
self.toolBar.AddTool(ID_LEGEND_RAISE, bmp, |
| 79 |
shortHelpString=_("Raise Layer")) |
| 80 |
|
| 81 |
bmp = resource.GetBitmapResource(LOWER_BMP, wx.BITMAP_TYPE_XPM) |
| 82 |
self.toolBar.AddTool(ID_LEGEND_LOWER, bmp, |
| 83 |
shortHelpString=_("Lower Layer")) |
| 84 |
|
| 85 |
bmp = resource.GetBitmapResource(BOTTOM_BMP, wx.BITMAP_TYPE_XPM) |
| 86 |
self.toolBar.AddTool(ID_LEGEND_BOTTOM, bmp, |
| 87 |
shortHelpString=_("Bottom Layer")) |
| 88 |
|
| 89 |
bmp = resource.GetBitmapResource(SHOW_BMP, wx.BITMAP_TYPE_XPM) |
| 90 |
self.toolBar.AddTool(ID_LEGEND_SHOWLAYER, bmp, |
| 91 |
shortHelpString=_("Show Layer")) |
| 92 |
|
| 93 |
bmp = resource.GetBitmapResource(HIDE_BMP, wx.BITMAP_TYPE_XPM) |
| 94 |
self.toolBar.AddTool(ID_LEGEND_HIDELAYER, bmp, |
| 95 |
shortHelpString=_("Hide Layer")) |
| 96 |
|
| 97 |
bmp = resource.GetBitmapResource(PROPS_BMP, wx.BITMAP_TYPE_XPM) |
| 98 |
self.toolBar.AddTool(ID_LEGEND_PROPS, bmp, |
| 99 |
shortHelpString=_("Edit Layer Properties")) |
| 100 |
|
| 101 |
self.toolBar.Realize() |
| 102 |
panelBox.Add(self.toolBar, 0, wx.GROW, 0) |
| 103 |
|
| 104 |
self.Bind(wx.EVT_TOOL, self._OnMoveTop, id=ID_LEGEND_TOP) |
| 105 |
self.Bind(wx.EVT_TOOL, self._OnMoveUp, id=ID_LEGEND_RAISE) |
| 106 |
self.Bind(wx.EVT_TOOL, self._OnMoveDown, id=ID_LEGEND_LOWER) |
| 107 |
self.Bind(wx.EVT_TOOL, self._OnMoveBottom, id=ID_LEGEND_BOTTOM) |
| 108 |
self.Bind(wx.EVT_TOOL, self._OnProperties, id=ID_LEGEND_PROPS) |
| 109 |
self.Bind(wx.EVT_TOOL, self._OnShowLayer, id=ID_LEGEND_SHOWLAYER) |
| 110 |
self.Bind(wx.EVT_TOOL, self._OnHideLayer, id=ID_LEGEND_HIDELAYER) |
| 111 |
|
| 112 |
self.tree = LegendTree(self, ID_LEGEND_TREE, map, mainWindow) |
| 113 |
|
| 114 |
panelBox.Add(self.tree, 1, wx.GROW, 0) |
| 115 |
|
| 116 |
self.scalebarbitmap = ScaleBarBitmap(self, map, mainWindow) |
| 117 |
panelBox.Add(self.scalebarbitmap, 0, wx.GROW, 0) |
| 118 |
|
| 119 |
self.SetAutoLayout(True) |
| 120 |
self.SetSizer(panelBox) |
| 121 |
panelBox.SetSizeHints(self) |
| 122 |
|
| 123 |
|
| 124 |
self.panelBox = panelBox |
| 125 |
|
| 126 |
self.__EnableButtons(False) |
| 127 |
|
| 128 |
self.Create() |
| 129 |
|
| 130 |
self.Bind(wx.EVT_CLOSE, self._OnClose) |
| 131 |
|
| 132 |
|
| 133 |
def GetMap(self): |
| 134 |
return self.tree.GetMap() |
| 135 |
|
| 136 |
def SetMap(self, map): |
| 137 |
self.tree.SetMap(map) |
| 138 |
self.scalebarbitmap.SetCanvas(self.mainWindow.canvas) |
| 139 |
|
| 140 |
def DoOnSelChanged(self, layer, group): |
| 141 |
|
| 142 |
ok = isinstance(layer, BaseLayer) |
| 143 |
self.__EnableButtons(ok) |
| 144 |
|
| 145 |
self.mainWindow.SelectLayer(layer) |
| 146 |
|
| 147 |
def DoOnProperties(self): |
| 148 |
list = self.tree.GetSelectedHierarchy() |
| 149 |
|
| 150 |
ok = isinstance(list[0], BaseLayer) |
| 151 |
if ok: |
| 152 |
self.mainWindow.OpenLayerProperties(list[0], list[1]) |
| 153 |
|
| 154 |
def Destroy(self): |
| 155 |
self.__Close() |
| 156 |
|
| 157 |
def _OnProperties(self, event): |
| 158 |
self.DoOnProperties() |
| 159 |
|
| 160 |
def _OnMoveTop(self, event): |
| 161 |
self.tree.MoveCurrentItemTop() |
| 162 |
|
| 163 |
def _OnMoveUp(self, event): |
| 164 |
self.tree.MoveCurrentItemUp() |
| 165 |
|
| 166 |
def _OnMoveDown(self, event): |
| 167 |
self.tree.MoveCurrentItemDown() |
| 168 |
|
| 169 |
def _OnMoveBottom(self, event): |
| 170 |
self.tree.MoveCurrentItemBottom() |
| 171 |
|
| 172 |
def _OnShowLayer(self, event): |
| 173 |
self.tree.DoOnShowLayer() |
| 174 |
pass |
| 175 |
|
| 176 |
#def Close(self, force = False): |
| 177 |
#DockPanel.Close(self, force) |
| 178 |
|
| 179 |
def _OnClose(self, event): |
| 180 |
self.__Close() |
| 181 |
|
| 182 |
def _OnHideLayer(self, event): |
| 183 |
self.tree.DoOnHideLayer() |
| 184 |
pass |
| 185 |
|
| 186 |
def _OnToggleVisibility(self, event): |
| 187 |
self.tree.ToggleVisibility() |
| 188 |
|
| 189 |
def _OnProjection(self, event): |
| 190 |
self.tree.LayerProjection() |
| 191 |
|
| 192 |
def _OnRemoveLayer(self, event): |
| 193 |
self.mainWindow.RemoveLayer() |
| 194 |
|
| 195 |
def _OnShowTable(self, event): |
| 196 |
self.mainWindow.LayerShowTable() |
| 197 |
|
| 198 |
def __EnableButtons(self, on): |
| 199 |
self.toolBar.EnableTool(ID_LEGEND_TOP, on) |
| 200 |
self.toolBar.EnableTool(ID_LEGEND_RAISE, on) |
| 201 |
self.toolBar.EnableTool(ID_LEGEND_LOWER, on) |
| 202 |
self.toolBar.EnableTool(ID_LEGEND_BOTTOM, on) |
| 203 |
self.toolBar.EnableTool(ID_LEGEND_SHOWLAYER, on) |
| 204 |
self.toolBar.EnableTool(ID_LEGEND_HIDELAYER, on) |
| 205 |
self.toolBar.EnableTool(ID_LEGEND_PROPS, on) |
| 206 |
|
| 207 |
def __Close(self): |
| 208 |
self.tree.Close() |
| 209 |
|
| 210 |
class LegendTree(wx.TreeCtrl): |
| 211 |
|
| 212 |
def __init__(self, parent, id, map, mainWindow): |
| 213 |
wx.TreeCtrl.__init__(self, parent, id, |
| 214 |
style = wx.TR_DEFAULT_STYLE | wx.TR_HIDE_ROOT, |
| 215 |
size = (200, 200)) |
| 216 |
|
| 217 |
self.mainWindow = mainWindow |
| 218 |
self.map = None |
| 219 |
self.parent = parent |
| 220 |
self.changing_selection = 0 |
| 221 |
|
| 222 |
# |
| 223 |
# The image list used by the wxTreeCtrl causes problems when |
| 224 |
# we remove layers and/or change a classification because it |
| 225 |
# changes the image indices if you remove images from the list. |
| 226 |
# Rather than removing unused images we use this list to keep |
| 227 |
# track of which indices are available in the image list |
| 228 |
# (because of a previous removal) and then replace those indices |
| 229 |
# with new images rather than appending to the end of the image |
| 230 |
# list (assuming there are any that are available). |
| 231 |
# |
| 232 |
self.availImgListIndices = [] |
| 233 |
|
| 234 |
self.image_list = None |
| 235 |
self.emptyImageIndex = 0 |
| 236 |
|
| 237 |
self.previewer = ClassDataPreviewer() |
| 238 |
|
| 239 |
self.preventExpandCollapse = False |
| 240 |
self.raiseProperties = False |
| 241 |
|
| 242 |
self.Bind(wx.EVT_TREE_ITEM_ACTIVATED, self._OnItemActivated, id=ID_LEGEND_TREE) |
| 243 |
self.Bind(wx.EVT_TREE_SEL_CHANGED, self._OnSelChanged, id=ID_LEGEND_TREE) |
| 244 |
self.Bind(wx.EVT_TREE_ITEM_EXPANDING, self.OnItemExpandCollapse, id=ID_LEGEND_TREE) |
| 245 |
self.Bind(wx.EVT_TREE_ITEM_COLLAPSING, self.OnItemExpandCollapse, id=ID_LEGEND_TREE) |
| 246 |
self.Bind(wx.EVT_TREE_ITEM_RIGHT_CLICK, self._OnRightClick, id=ID_LEGEND_TREE) |
| 247 |
|
| 248 |
self.Bind(wx.EVT_CLOSE, self._OnClose) |
| 249 |
|
| 250 |
self.SetMap(map) |
| 251 |
|
| 252 |
def _OnRightClick(self, event): |
| 253 |
"""Select item and pop up a context menu""" |
| 254 |
|
| 255 |
# The pop up menu is related to the legend tree, so we have direct |
| 256 |
# access on the tree items. The events issued by the menu are handled |
| 257 |
# by the legend panel, since most of the handlers are already |
| 258 |
# implemented there. |
| 259 |
|
| 260 |
# Update item selection to the right click |
| 261 |
item = event.GetItem() |
| 262 |
self.SelectItem(item) |
| 263 |
|
| 264 |
# Define the menu |
| 265 |
popup_menu = Menu("PopUp", "", |
| 266 |
[ "layer_visibility", |
| 267 |
None, |
| 268 |
"layer_properties", |
| 269 |
"layer_projection", |
| 270 |
"layer_remove", |
| 271 |
"layer_show_table", |
| 272 |
None, |
| 273 |
"layer_to_top", |
| 274 |
"layer_raise", |
| 275 |
"layer_lower", |
| 276 |
"layer_to_bottom" |
| 277 |
]) |
| 278 |
|
| 279 |
# Display the menu |
| 280 |
pos = event.GetPoint() |
| 281 |
shift = self.ClientToScreen((0,0)) |
| 282 |
self.PopupMenu(self.mainWindow.build_menu(popup_menu), pos) |
| 283 |
|
| 284 |
def find_layer(self, layer): |
| 285 |
"""Return the tree item for the layer""" |
| 286 |
root = self.GetRootItem() |
| 287 |
id, cookie = self.GetFirstChild(root) |
| 288 |
while id.IsOk(): |
| 289 |
if self.GetPyData(id) is layer: |
| 290 |
return id |
| 291 |
id, cookie = self.GetNextChild(root, cookie) |
| 292 |
return None |
| 293 |
|
| 294 |
def _OnClose(self, event): |
| 295 |
self.SetMap(None) |
| 296 |
|
| 297 |
def GetMap(self): |
| 298 |
return self.map |
| 299 |
|
| 300 |
def SetMap(self, map): |
| 301 |
|
| 302 |
sub_list = [(MAP_STACKING_CHANGED, self._OnMsgMapStackingChanged), |
| 303 |
(MAP_LAYERS_ADDED, self._OnMsgMapLayersAdded), |
| 304 |
(MAP_LAYERS_REMOVED, self._OnMsgMapLayersRemoved)] |
| 305 |
|
| 306 |
if self.map is not None: |
| 307 |
for msg, func in sub_list: self.map.Unsubscribe(msg, func) |
| 308 |
#self.mainWindow.application.Unsubscribe(SESSION_REPLACED, |
| 309 |
#self._OnMsgMapsChanged) |
| 310 |
#try: |
| 311 |
#self.mainWindow.application.session.Unsubscribe(MAPS_CHANGED, |
| 312 |
#self._OnMsgMapsChanged) |
| 313 |
#except ConnectorError: |
| 314 |
#pass |
| 315 |
self.DeleteAllItems() |
| 316 |
|
| 317 |
self.map = map |
| 318 |
|
| 319 |
if self.map is not None: |
| 320 |
for msg, func in sub_list: self.map.Subscribe(msg, func) |
| 321 |
#self.mainWindow.application.session.Subscribe(MAPS_CHANGED, |
| 322 |
#self._OnMsgMapsChanged) |
| 323 |
#self.mainWindow.application.Subscribe(SESSION_REPLACED, |
| 324 |
#self._OnMsgMapsChanged) |
| 325 |
self.__FillTree(self.map) |
| 326 |
|
| 327 |
def MoveCurrentItemTop(self): |
| 328 |
layer, group = self.GetSelectedHierarchy() |
| 329 |
|
| 330 |
if layer is not None: |
| 331 |
self.map.MoveLayerToTop(layer) |
| 332 |
else: |
| 333 |
assert False, "Shouldn't be allowed." |
| 334 |
pass |
| 335 |
|
| 336 |
def MoveCurrentItemUp(self): |
| 337 |
layer, group = self.GetSelectedHierarchy() |
| 338 |
|
| 339 |
if layer is not None: |
| 340 |
self.map.RaiseLayer(layer) |
| 341 |
else: |
| 342 |
assert False, "Shouldn't be allowed." |
| 343 |
pass |
| 344 |
|
| 345 |
def MoveCurrentItemDown(self): |
| 346 |
layer, group = self.GetSelectedHierarchy() |
| 347 |
|
| 348 |
if layer is not None: |
| 349 |
self.map.LowerLayer(layer) |
| 350 |
else: |
| 351 |
assert False, "Shouldn't be allowed." |
| 352 |
pass |
| 353 |
|
| 354 |
def MoveCurrentItemBottom(self): |
| 355 |
layer, group = self.GetSelectedHierarchy() |
| 356 |
|
| 357 |
if layer is not None: |
| 358 |
self.map.MoveLayerToBottom(layer) |
| 359 |
else: |
| 360 |
assert False, "Shouldn't be allowed." |
| 361 |
pass |
| 362 |
|
| 363 |
def OnCompareItems(self, item1, item2): |
| 364 |
|
| 365 |
data1 = self.GetPyData(item1) |
| 366 |
data2 = self.GetPyData(item2) |
| 367 |
|
| 368 |
if isinstance(data1, BaseLayer): |
| 369 |
layers = self.map.Layers() |
| 370 |
return layers.index(data2) - layers.index(data1) |
| 371 |
else: |
| 372 |
return wx.TreeCtrl.OnCompareItems(self, item1, item2) |
| 373 |
|
| 374 |
def DoOnShowLayer(self): |
| 375 |
layer, group = self.GetSelectedHierarchy() |
| 376 |
layer.SetVisible(True) |
| 377 |
|
| 378 |
def DoOnHideLayer(self): |
| 379 |
layer, group = self.GetSelectedHierarchy() |
| 380 |
layer.SetVisible(False) |
| 381 |
|
| 382 |
def ToggleVisibility(self): |
| 383 |
layer, group = self.GetSelectedHierarchy() |
| 384 |
|
| 385 |
layer.SetVisible(not layer.Visible()) |
| 386 |
|
| 387 |
def LayerProjection(self): |
| 388 |
self.parent.mainWindow.LayerProjection() |
| 389 |
|
| 390 |
def Sort(self): |
| 391 |
self.SortChildren(self.GetRootItem()) |
| 392 |
|
| 393 |
def GetSelectedHierarchy(self): |
| 394 |
id = self.GetSelection() |
| 395 |
|
| 396 |
if not id.IsOk(): |
| 397 |
return (None, None) |
| 398 |
|
| 399 |
layer = self.GetPyData(id) |
| 400 |
group = None |
| 401 |
|
| 402 |
if isinstance(layer, ClassGroup): |
| 403 |
id = self.GetItemParent(id) |
| 404 |
assert id.IsOk() |
| 405 |
group = layer |
| 406 |
layer = self.GetPyData(id) |
| 407 |
|
| 408 |
return (layer, group) |
| 409 |
|
| 410 |
def _OnMsgMapsChanged(self): |
| 411 |
#print self.map is self.mainWindow.Map() |
| 412 |
self.SetMap(self.mainWindow.Map()) |
| 413 |
|
| 414 |
def _OnSelChanged(self, event): |
| 415 |
# If we change the selection from normalize_selection do nothing. |
| 416 |
if self.changing_selection: |
| 417 |
return |
| 418 |
|
| 419 |
self.normalize_selection() |
| 420 |
self.__UpdateSelection() |
| 421 |
|
| 422 |
def normalize_selection(self): |
| 423 |
"""Select the layer containing currently selected item""" |
| 424 |
# This is really a workaround for a bug in wx where deleting a |
| 425 |
# subtree with DeleteChildren does not update the selection |
| 426 |
# properly and can lead to segfaults later because the return |
| 427 |
# value of GetSelection points to invalid data. |
| 428 |
item = self.GetSelection() |
| 429 |
while item.IsOk(): |
| 430 |
object = self.GetPyData(item) |
| 431 |
if isinstance(object, BaseLayer): |
| 432 |
break |
| 433 |
item = self.GetItemParent(item) |
| 434 |
else: |
| 435 |
# No layer was found in the chain of parents, so there's |
| 436 |
# nothing we can do. |
| 437 |
return |
| 438 |
|
| 439 |
self.changing_selection = 1 |
| 440 |
try: |
| 441 |
self.SelectItem(item) |
| 442 |
finally: |
| 443 |
self.changing_selection = 0 |
| 444 |
|
| 445 |
|
| 446 |
def OnItemExpandCollapse(self, event): |
| 447 |
if self.preventExpandCollapse: |
| 448 |
event.Veto() |
| 449 |
self.preventExpandCollapse = False |
| 450 |
|
| 451 |
def _OnItemActivated(self, event): |
| 452 |
# The following looks strange but is need under Windows to |
| 453 |
# raise the Properties on double-click: The tree control |
| 454 |
# always gets an Expanded / Collapsed event after the ItemActivated |
| 455 |
# on double click, which raises the main window again. We add a second |
| 456 |
# ItemActivated event to the queue, which simply raises the already |
| 457 |
# displayed window. |
| 458 |
if self.raiseProperties: |
| 459 |
self.parent.DoOnProperties() |
| 460 |
self.raiseProperties = False |
| 461 |
else: |
| 462 |
self.raiseProperties = True |
| 463 |
self.preventExpandCollapse = True |
| 464 |
self.parent.DoOnProperties() |
| 465 |
self.AddPendingEvent(event) |
| 466 |
|
| 467 |
def _OnMsgLayerChanged(self, layer): |
| 468 |
assert isinstance(layer, BaseLayer) |
| 469 |
|
| 470 |
id = self.find_layer(layer) |
| 471 |
assert id is not None |
| 472 |
|
| 473 |
self.__FillTreeLayer(id) |
| 474 |
self.__UpdateSelection() |
| 475 |
|
| 476 |
def _OnMsgMapStackingChanged(self, *args): |
| 477 |
self.Sort() |
| 478 |
id = self.GetSelection() |
| 479 |
|
| 480 |
if id.IsOk(): |
| 481 |
self.EnsureVisible(id) |
| 482 |
self.__UpdateSelection() |
| 483 |
|
| 484 |
def _OnMsgMapLayersAdded(self, map): |
| 485 |
assert map is self.map |
| 486 |
|
| 487 |
# Build a dict with all layers known by the the tree as keys |
| 488 |
layers = {} |
| 489 |
root = self.GetRootItem() |
| 490 |
id, cookie = self.GetFirstChild(root) |
| 491 |
while id.IsOk(): |
| 492 |
layers[self.GetPyData(id)] = 1 |
| 493 |
id, cookie = self.GetNextChild(root, cookie) |
| 494 |
|
| 495 |
# Add layers in the map but not in the dict |
| 496 |
i = 0 |
| 497 |
for l in map.Layers(): |
| 498 |
if not l in layers: |
| 499 |
self.__AddLayer(i, l) |
| 500 |
|
| 501 |
self.__UpdateSelection() |
| 502 |
|
| 503 |
def _OnMsgMapLayersRemoved(self, map): |
| 504 |
assert map is self.map |
| 505 |
|
| 506 |
layers = map.Layers() |
| 507 |
|
| 508 |
root = self.GetRootItem() |
| 509 |
id, cookie = self.GetFirstChild(root) |
| 510 |
while id.IsOk(): |
| 511 |
if self.GetPyData(id) not in layers: |
| 512 |
self.__RemoveLayer(id) |
| 513 |
id, cookie = self.GetNextChild(root, cookie) |
| 514 |
|
| 515 |
|
| 516 |
self.__UpdateSelection() |
| 517 |
|
| 518 |
def _OnMsgLayerVisibilityChanged(self, layer): |
| 519 |
assert isinstance(layer, BaseLayer) |
| 520 |
|
| 521 |
self.__ShowHideLayer(layer) |
| 522 |
self.__UpdateSelection() |
| 523 |
|
| 524 |
def _OnMsgLayerTitleChanged(self, layer): |
| 525 |
|
| 526 |
id = self.find_layer(layer) |
| 527 |
if id.IsOk(): |
| 528 |
self.SetItemText(id, layer.Title()) |
| 529 |
self.__UpdateSelection() |
| 530 |
|
| 531 |
def __UpdateSelection(self): |
| 532 |
layer, group = self.GetSelectedHierarchy() |
| 533 |
self.parent.DoOnSelChanged(layer, group) |
| 534 |
|
| 535 |
def __FillTree(self, map): |
| 536 |
|
| 537 |
self.Freeze() |
| 538 |
|
| 539 |
self.DeleteAllItems() |
| 540 |
|
| 541 |
if map.HasLayers(): |
| 542 |
root = self.GetRootItem() |
| 543 |
for l in map.Layers(): |
| 544 |
self.__AddLayer(0, l) |
| 545 |
|
| 546 |
self.Thaw() |
| 547 |
|
| 548 |
def __FillTreeLayer(self, pid): |
| 549 |
|
| 550 |
layer = self.GetPyData(pid) |
| 551 |
|
| 552 |
self.Freeze() |
| 553 |
|
| 554 |
self.DeleteChildren(pid) |
| 555 |
|
| 556 |
if layer.HasClassification(): |
| 557 |
|
| 558 |
clazz = layer.GetClassification() |
| 559 |
|
| 560 |
shapeType = layer.ShapeType() |
| 561 |
|
| 562 |
show = layer.Visible() |
| 563 |
for g in clazz: |
| 564 |
if g.IsVisible(): |
| 565 |
id = self.AppendItem(pid, g.GetDisplayText()) |
| 566 |
self.SetPyData(id, g) |
| 567 |
self.__SetVisibilityStyle(show, id) |
| 568 |
|
| 569 |
bmp = self.__BuildGroupImage(g, shapeType) |
| 570 |
|
| 571 |
if bmp is None: |
| 572 |
self.SetItemImage(id, -1, wx.TreeItemIcon_Normal) |
| 573 |
self.SetItemImage(id, -1, wx.TreeItemIcon_Selected) |
| 574 |
#self.SetItemSelectedImage(id, -1) |
| 575 |
else: |
| 576 |
if self.availImgListIndices: |
| 577 |
i = self.availImgListIndices.pop(0) |
| 578 |
self.image_list.Replace(i, bmp) |
| 579 |
else: |
| 580 |
i = self.image_list.Add(bmp) |
| 581 |
|
| 582 |
self.SetItemImage(id, i, wx.TreeItemIcon_Normal) |
| 583 |
self.SetItemImage(id, i, wx.TreeItemIcon_Selected) |
| 584 |
#self.SetItemlectedImage(id, i) |
| 585 |
|
| 586 |
self.Thaw() |
| 587 |
|
| 588 |
def __BuildGroupImage(self, group, shapeType): |
| 589 |
|
| 590 |
bmp = wx.EmptyBitmap(BMP_SIZE_W, BMP_SIZE_H) |
| 591 |
#brush = wxBrush(Color2wxColour(item[1]), wxSOLID) |
| 592 |
dc = wx.MemoryDC() |
| 593 |
dc.SelectObject(bmp) |
| 594 |
dc.Clear() |
| 595 |
|
| 596 |
self.previewer.Draw(dc, None, group.GetProperties(), shapeType) |
| 597 |
|
| 598 |
return bmp |
| 599 |
|
| 600 |
def DeleteAllItems(self): |
| 601 |
|
| 602 |
pid = self.GetRootItem() |
| 603 |
|
| 604 |
id, cookie = self.GetFirstChild(pid) |
| 605 |
while id.IsOk(): |
| 606 |
self.__RemoveLayer(id) |
| 607 |
id, cookie = self.GetNextChild(pid, cookie) |
| 608 |
|
| 609 |
wx.TreeCtrl.DeleteAllItems(self) |
| 610 |
|
| 611 |
def __AddLayer(self, before, l): |
| 612 |
root = self.GetRootItem() |
| 613 |
id = self.InsertItemBefore(root, before, |
| 614 |
l.Title(), |
| 615 |
self.mapImageIndex, |
| 616 |
self.mapImageIndex) |
| 617 |
|
| 618 |
self.SetPyData(id, l) |
| 619 |
self.__SetVisibilityStyle(l.Visible(), id) |
| 620 |
|
| 621 |
self.__FillTreeLayer(id) |
| 622 |
self.Expand(id) |
| 623 |
|
| 624 |
l.Subscribe(LAYER_CHANGED, self._OnMsgLayerChanged) |
| 625 |
l.Subscribe(LAYER_VISIBILITY_CHANGED, |
| 626 |
self._OnMsgLayerVisibilityChanged) |
| 627 |
l.Subscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged) |
| 628 |
|
| 629 |
def __RemoveLayer(self, id): |
| 630 |
self.DeleteChildren(id) |
| 631 |
|
| 632 |
layer = self.GetPyData(id) |
| 633 |
layer.Unsubscribe(LAYER_CHANGED, |
| 634 |
self._OnMsgLayerChanged) |
| 635 |
layer.Unsubscribe(LAYER_VISIBILITY_CHANGED, |
| 636 |
self._OnMsgLayerVisibilityChanged) |
| 637 |
layer.Unsubscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged) |
| 638 |
|
| 639 |
self.Delete(id) |
| 640 |
|
| 641 |
def DeleteChildren(self, pid): |
| 642 |
id, cookie = self.GetFirstChild(pid) |
| 643 |
while id.IsOk(): |
| 644 |
self.availImgListIndices.append(self.GetItemImage(id)) |
| 645 |
id, cookie = self.GetNextChild(pid, cookie) |
| 646 |
wx.TreeCtrl.DeleteChildren(self, pid) |
| 647 |
|
| 648 |
def GetRootItem(self): |
| 649 |
root = wx.TreeCtrl.GetRootItem(self) |
| 650 |
|
| 651 |
if not root.IsOk(): |
| 652 |
self.image_list = wx.ImageList(BMP_SIZE_W, BMP_SIZE_H, False, 0) |
| 653 |
|
| 654 |
bmp = wx.EmptyBitmap(BMP_SIZE_W, BMP_SIZE_H) |
| 655 |
dc = wx.MemoryDC() |
| 656 |
dc.SelectObject(bmp) |
| 657 |
dc.SetBrush(wx.BLACK_BRUSH) |
| 658 |
dc.Clear() |
| 659 |
dc.SelectObject(wx.NullBitmap) |
| 660 |
|
| 661 |
self.emptyImageIndex = \ |
| 662 |
self.image_list.AddWithColourMask(bmp, wx.Colour(0, 0, 0)) |
| 663 |
|
| 664 |
bmp = resource.GetBitmapResource("legend_icon_layer", |
| 665 |
wx.BITMAP_TYPE_XPM) |
| 666 |
self.mapImageIndex = \ |
| 667 |
self.image_list.Add(bmp) |
| 668 |
|
| 669 |
self.AssignImageList(self.image_list) |
| 670 |
self.availImgListIndices = [] |
| 671 |
|
| 672 |
root = self.AddRoot("") |
| 673 |
|
| 674 |
return root |
| 675 |
|
| 676 |
def __SetVisibilityStyle(self, visible, id): |
| 677 |
font = self.GetItemFont(id) |
| 678 |
|
| 679 |
if visible: |
| 680 |
font.SetStyle(wx.NORMAL) |
| 681 |
color = wx.BLACK |
| 682 |
else: |
| 683 |
#font.SetStyle(wxITALIC) |
| 684 |
font.SetStyle(wx.NORMAL) |
| 685 |
color = wx.LIGHT_GREY |
| 686 |
|
| 687 |
self.SetItemTextColour(id, color) |
| 688 |
self.SetItemFont(id, font) |
| 689 |
|
| 690 |
def __ShowHideLayer(self, layer): |
| 691 |
parent = self.find_layer(layer) |
| 692 |
assert parent.IsOk() |
| 693 |
|
| 694 |
visible = layer.Visible() |
| 695 |
|
| 696 |
self.__SetVisibilityStyle(visible, parent) |
| 697 |
|
| 698 |
id, cookie = self.GetFirstChild(parent) |
| 699 |
|
| 700 |
while id.IsOk(): |
| 701 |
self.__SetVisibilityStyle(visible, id) |
| 702 |
id, cookie = self.GetNextChild(parent, cookie) |
| 703 |
|
| 704 |
# In wxPython 2.4 the GetFirstChild method has to be called with a |
| 705 |
# second argument and in 2.5 it must not. Reading the code of |
| 706 |
# wxPython 2.4 it seems that the second parameter was intended to be |
| 707 |
# optional there but due to a bug in the C++ code it doesn't work |
| 708 |
# and omitting the second argument leads to a segfault. To cope |
| 709 |
# with this and to make the code usable with both 2.5 and 2.4 we |
| 710 |
# overwrite the inherited method when running with 2.4 to provide a |
| 711 |
# default value for the second argument. |
| 712 |
if map(int, wx.__version__.split(".")[:2]) < [2, 5]: |
| 713 |
def GetFirstChild(self, item): |
| 714 |
return wx.TreeCtrl.GetFirstChild(self, item, 0) |
| 715 |
|
| 716 |
|
| 717 |
class ScaleBarBitmap(wx.BoxSizer): |
| 718 |
|
| 719 |
def __init__(self, parent, map, mainWindow): |
| 720 |
# While the width is fixed, get the height _now_. |
| 721 |
dc = wx.MemoryDC() |
| 722 |
textwidth, textheight = dc.GetTextExtent("%d"%0) |
| 723 |
self.width = 210 |
| 724 |
self.height = textheight + 3*2 + 8 |
| 725 |
|
| 726 |
wx.BoxSizer.__init__(self, wx.VERTICAL) |
| 727 |
bmp=wx.EmptyBitmap(self.width, self.height) |
| 728 |
self.scalebarBitmap = wx.StaticBitmap(parent, -1, bmp) |
| 729 |
self.Add(self.scalebarBitmap, 0, wx.ALIGN_CENTER|wx.LEFT|wx.TOP|wx.RIGHT, 1) |
| 730 |
|
| 731 |
self.mainWindow = mainWindow |
| 732 |
self.parent = parent |
| 733 |
self.canvas = None |
| 734 |
self.SetCanvas(self.mainWindow.canvas) |
| 735 |
|
| 736 |
def SetCanvas(self, canvas): |
| 737 |
sub_list = [(SCALE_CHANGED, self._OnMsgScaleChanged)] |
| 738 |
|
| 739 |
if self.canvas is not None: |
| 740 |
for msg, func in sub_list: self.canvas.Unsubscribe(msg, func) |
| 741 |
|
| 742 |
self.canvas = canvas |
| 743 |
self.scalebar = ScaleBar(canvas.map) |
| 744 |
|
| 745 |
if self.canvas is not None: |
| 746 |
for msg, func in sub_list: self.canvas.Subscribe(msg, func) |
| 747 |
self.__SetScale(self.canvas.scale) |
| 748 |
|
| 749 |
def _OnMsgScaleChanged(self, scale): |
| 750 |
self.__SetScale(scale) |
| 751 |
|
| 752 |
def __SetScale(self, scale): |
| 753 |
bmp = wx.EmptyBitmap(self.width, self.height) |
| 754 |
dc = wx.MemoryDC() |
| 755 |
dc.SelectObject(bmp) |
| 756 |
dc.Clear() |
| 757 |
|
| 758 |
if self.canvas.map is not None \ |
| 759 |
and self.canvas.map.projection is not None: |
| 760 |
|
| 761 |
# if we are using a projection with geographics coordinates |
| 762 |
# we need to change the scale value based on where we are |
| 763 |
# on the globe. |
| 764 |
if self.canvas.map.projection.GetProjectedUnits() \ |
| 765 |
== PROJ_UNITS_DEGREES: |
| 766 |
|
| 767 |
width, height = self.canvas.GetSizeTuple() |
| 768 |
long, lat = self.canvas.win_to_proj(width/2, height/2) |
| 769 |
|
| 770 |
# slightly inaccurate, but if we are looking at |
| 771 |
# the north/south pole we could end up dividing by zero |
| 772 |
# |
| 773 |
# it shouldn't matter for our purposes that we ignore |
| 774 |
# the original sign of lat. |
| 775 |
if fabs(lat) > 89.9: lat = 89.9 |
| 776 |
|
| 777 |
# |
| 778 |
# one degree is about 111,133m at the equator |
| 779 |
# we need to adjust that for latitude as |
| 780 |
# we move north/south. use the center of the map |
| 781 |
# as the point to scale the length to. |
| 782 |
# |
| 783 |
scale = scale / (111133.0 * fabs(cos(lat * pi/180))) |
| 784 |
|
| 785 |
self.scalebar.DrawScaleBar(scale, dc, (0,0), dc.GetSizeTuple()) |
| 786 |
|
| 787 |
self.scalebarBitmap.SetBitmap(bmp) |
| 788 |
|
Parent Directory
| 
Revision Log