| 1 |
# Copyright (c) 2001, 2002, 2003 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 Thuban import _ |
| 12 |
|
| 13 |
import resource |
| 14 |
|
| 15 |
from wxPython.wx import * |
| 16 |
|
| 17 |
from Thuban.Model.layer import BaseLayer |
| 18 |
from Thuban.Model.map import Map |
| 19 |
from Thuban.Model.classification import ClassGroup |
| 20 |
|
| 21 |
from Thuban.Model.messages import \ |
| 22 |
MAP_STACKING_CHANGED, MAP_LAYERS_ADDED, MAP_LAYERS_REMOVED, LAYER_CHANGED,\ |
| 23 |
LAYER_VISIBILITY_CHANGED, TITLE_CHANGED |
| 24 |
|
| 25 |
from Thuban.UI.messages import SCALE_CHANGED |
| 26 |
|
| 27 |
from Thuban.UI.classifier import ClassDataPreviewer |
| 28 |
from Thuban.UI.dock import DockPanel |
| 29 |
from Thuban.UI.scalebar import ScaleBar |
| 30 |
|
| 31 |
from Thuban.Lib.connector import ConnectorError |
| 32 |
|
| 33 |
ID_LEGEND_TOP = 4001 |
| 34 |
ID_LEGEND_RAISE = 4002 |
| 35 |
ID_LEGEND_LOWER = 4003 |
| 36 |
ID_LEGEND_BOTTOM = 4004 |
| 37 |
ID_LEGEND_TREE = 4005 |
| 38 |
ID_LEGEND_PROPS = 4006 |
| 39 |
ID_LEGEND_SHOWLAYER = 4007 |
| 40 |
ID_LEGEND_HIDELAYER = 4008 |
| 41 |
|
| 42 |
BMP_SIZE_W = 15 |
| 43 |
BMP_SIZE_H = 15 |
| 44 |
|
| 45 |
TOP_BMP = "top_layer" |
| 46 |
RAISE_BMP = "raise_layer" |
| 47 |
LOWER_BMP = "lower_layer" |
| 48 |
BOTTOM_BMP = "bottom_layer" |
| 49 |
SHOW_BMP = "show_layer" |
| 50 |
HIDE_BMP = "hide_layer" |
| 51 |
PROPS_BMP = "layer_properties" |
| 52 |
|
| 53 |
|
| 54 |
class LegendPanel(DockPanel): |
| 55 |
|
| 56 |
def __init__(self, parent, map, mainWindow): |
| 57 |
DockPanel.__init__(self, parent, -1) |
| 58 |
|
| 59 |
self.mainWindow = mainWindow |
| 60 |
self.parent = parent |
| 61 |
|
| 62 |
self.buttons = [] |
| 63 |
|
| 64 |
panelBox = wxBoxSizer(wxVERTICAL) |
| 65 |
|
| 66 |
self.toolBar = wxToolBar(self, -1) |
| 67 |
self.toolBar.SetToolBitmapSize(wxSize(24, 24)) |
| 68 |
|
| 69 |
bmp = resource.GetBitmapResource(TOP_BMP, wxBITMAP_TYPE_XPM) |
| 70 |
self.toolBar.AddTool(ID_LEGEND_TOP, bmp, |
| 71 |
shortHelpString=_("Top Layer")) |
| 72 |
|
| 73 |
bmp = resource.GetBitmapResource(RAISE_BMP, wxBITMAP_TYPE_XPM) |
| 74 |
self.toolBar.AddTool(ID_LEGEND_RAISE, bmp, |
| 75 |
shortHelpString=_("Raise Layer")) |
| 76 |
|
| 77 |
bmp = resource.GetBitmapResource(LOWER_BMP, wxBITMAP_TYPE_XPM) |
| 78 |
self.toolBar.AddTool(ID_LEGEND_LOWER, bmp, |
| 79 |
shortHelpString=_("Lower Layer")) |
| 80 |
|
| 81 |
bmp = resource.GetBitmapResource(BOTTOM_BMP, wxBITMAP_TYPE_XPM) |
| 82 |
self.toolBar.AddTool(ID_LEGEND_BOTTOM, bmp, |
| 83 |
shortHelpString=_("Bottom Layer")) |
| 84 |
|
| 85 |
bmp = resource.GetBitmapResource(SHOW_BMP, wxBITMAP_TYPE_XPM) |
| 86 |
self.toolBar.AddTool(ID_LEGEND_SHOWLAYER, bmp, |
| 87 |
shortHelpString=_("Show Layer")) |
| 88 |
|
| 89 |
bmp = resource.GetBitmapResource(HIDE_BMP, wxBITMAP_TYPE_XPM) |
| 90 |
self.toolBar.AddTool(ID_LEGEND_HIDELAYER, bmp, |
| 91 |
shortHelpString=_("Hide Layer")) |
| 92 |
|
| 93 |
bmp = resource.GetBitmapResource(PROPS_BMP, wxBITMAP_TYPE_XPM) |
| 94 |
self.toolBar.AddTool(ID_LEGEND_PROPS, bmp, |
| 95 |
shortHelpString=_("Edit Layer Properties")) |
| 96 |
|
| 97 |
self.toolBar.Realize() |
| 98 |
panelBox.Add(self.toolBar, 0, wxGROW, 0) |
| 99 |
|
| 100 |
EVT_TOOL(self, ID_LEGEND_TOP, self._OnMoveTop) |
| 101 |
EVT_TOOL(self, ID_LEGEND_RAISE, self._OnMoveUp) |
| 102 |
EVT_TOOL(self, ID_LEGEND_LOWER, self._OnMoveDown) |
| 103 |
EVT_TOOL(self, ID_LEGEND_BOTTOM, self._OnMoveBottom) |
| 104 |
EVT_TOOL(self, ID_LEGEND_PROPS, self._OnProperties) |
| 105 |
EVT_TOOL(self, ID_LEGEND_SHOWLAYER, self._OnShowLayer) |
| 106 |
EVT_TOOL(self, ID_LEGEND_HIDELAYER, self._OnHideLayer) |
| 107 |
|
| 108 |
self.tree = LegendTree(self, ID_LEGEND_TREE, map, mainWindow) |
| 109 |
|
| 110 |
panelBox.Add(self.tree, 1, wxGROW, 0) |
| 111 |
|
| 112 |
self.scalebarbitmap = ScaleBarBitmap(self, map, mainWindow) |
| 113 |
panelBox.Add(self.scalebarbitmap, 0, wxGROW, 0) |
| 114 |
|
| 115 |
self.SetAutoLayout(True) |
| 116 |
self.SetSizer(panelBox) |
| 117 |
panelBox.SetSizeHints(self) |
| 118 |
|
| 119 |
|
| 120 |
self.panelBox = panelBox |
| 121 |
|
| 122 |
self.__EnableButtons(False) |
| 123 |
|
| 124 |
self.Create() |
| 125 |
|
| 126 |
EVT_CLOSE(self, self._OnClose) |
| 127 |
|
| 128 |
|
| 129 |
def GetMap(self): |
| 130 |
return self.tree.GetMap() |
| 131 |
|
| 132 |
def SetMap(self, map): |
| 133 |
self.tree.SetMap(map) |
| 134 |
self.scalebarbitmap.SetCanvas(self.mainWindow.canvas) |
| 135 |
|
| 136 |
def DoOnSelChanged(self, layer, group): |
| 137 |
|
| 138 |
ok = isinstance(layer, BaseLayer) |
| 139 |
self.__EnableButtons(ok) |
| 140 |
|
| 141 |
self.mainWindow.SelectLayer(layer) |
| 142 |
|
| 143 |
def DoOnProperties(self): |
| 144 |
list = self.tree.GetSelectedHierarchy() |
| 145 |
|
| 146 |
ok = isinstance(list[0], BaseLayer) |
| 147 |
if ok: |
| 148 |
self.mainWindow.OpenLayerProperties(list[0], list[1]) |
| 149 |
|
| 150 |
def Destroy(self): |
| 151 |
self.__Close() |
| 152 |
|
| 153 |
def _OnProperties(self, event): |
| 154 |
self.DoOnProperties() |
| 155 |
|
| 156 |
def _OnMoveTop(self, event): |
| 157 |
self.tree.MoveCurrentItemTop() |
| 158 |
|
| 159 |
def _OnMoveUp(self, event): |
| 160 |
self.tree.MoveCurrentItemUp() |
| 161 |
|
| 162 |
def _OnMoveDown(self, event): |
| 163 |
self.tree.MoveCurrentItemDown() |
| 164 |
|
| 165 |
def _OnMoveBottom(self, event): |
| 166 |
self.tree.MoveCurrentItemBottom() |
| 167 |
|
| 168 |
def _OnShowLayer(self, event): |
| 169 |
self.tree.DoOnShowLayer() |
| 170 |
pass |
| 171 |
|
| 172 |
#def Close(self, force = False): |
| 173 |
#DockPanel.Close(self, force) |
| 174 |
|
| 175 |
def _OnClose(self, event): |
| 176 |
self.__Close() |
| 177 |
|
| 178 |
def _OnHideLayer(self, event): |
| 179 |
self.tree.DoOnHideLayer() |
| 180 |
pass |
| 181 |
|
| 182 |
def __EnableButtons(self, on): |
| 183 |
self.toolBar.EnableTool(ID_LEGEND_TOP, on) |
| 184 |
self.toolBar.EnableTool(ID_LEGEND_RAISE, on) |
| 185 |
self.toolBar.EnableTool(ID_LEGEND_LOWER, on) |
| 186 |
self.toolBar.EnableTool(ID_LEGEND_BOTTOM, on) |
| 187 |
self.toolBar.EnableTool(ID_LEGEND_SHOWLAYER, on) |
| 188 |
self.toolBar.EnableTool(ID_LEGEND_HIDELAYER, on) |
| 189 |
self.toolBar.EnableTool(ID_LEGEND_PROPS, on) |
| 190 |
|
| 191 |
def __Close(self): |
| 192 |
self.tree.Close() |
| 193 |
|
| 194 |
class LegendTree(wxTreeCtrl): |
| 195 |
|
| 196 |
def __init__(self, parent, id, map, mainWindow): |
| 197 |
wxTreeCtrl.__init__(self, parent, id, |
| 198 |
style = wxTR_DEFAULT_STYLE | wxTR_HIDE_ROOT, |
| 199 |
size = (200, 200)) |
| 200 |
|
| 201 |
self.mainWindow = mainWindow |
| 202 |
self.map = None |
| 203 |
self.parent = parent |
| 204 |
self.layer2id = {} |
| 205 |
|
| 206 |
self.image_list = None |
| 207 |
self.emptyImageIndex = 0 |
| 208 |
|
| 209 |
self.previewer = ClassDataPreviewer() |
| 210 |
|
| 211 |
EVT_TREE_ITEM_ACTIVATED(self, ID_LEGEND_TREE, self._OnItemActivated) |
| 212 |
EVT_TREE_SEL_CHANGED(self, ID_LEGEND_TREE, self._OnSelChanged) |
| 213 |
|
| 214 |
EVT_CLOSE(self, self._OnClose) |
| 215 |
|
| 216 |
self.SetMap(map) |
| 217 |
|
| 218 |
def _OnClose(self, event): |
| 219 |
self.SetMap(None) |
| 220 |
|
| 221 |
def GetMap(self): |
| 222 |
return self.map |
| 223 |
|
| 224 |
def SetMap(self, map): |
| 225 |
|
| 226 |
sub_list = [(MAP_STACKING_CHANGED, self._OnMsgMapStackingChanged), |
| 227 |
(MAP_LAYERS_ADDED, self._OnMsgMapLayersAddedRemoved), |
| 228 |
(MAP_LAYERS_REMOVED, self._OnMsgMapLayersAddedRemoved)] |
| 229 |
|
| 230 |
if self.map is not None: |
| 231 |
for msg, func in sub_list: self.map.Unsubscribe(msg, func) |
| 232 |
#self.mainWindow.application.Unsubscribe(SESSION_REPLACED, |
| 233 |
#self._OnMsgMapsChanged) |
| 234 |
#try: |
| 235 |
#self.mainWindow.application.session.Unsubscribe(MAPS_CHANGED, |
| 236 |
#self._OnMsgMapsChanged) |
| 237 |
#except ConnectorError: |
| 238 |
#pass |
| 239 |
self.__DeleteAllItems() |
| 240 |
|
| 241 |
self.map = map |
| 242 |
|
| 243 |
if self.map is not None: |
| 244 |
for msg, func in sub_list: self.map.Subscribe(msg, func) |
| 245 |
#self.mainWindow.application.session.Subscribe(MAPS_CHANGED, |
| 246 |
#self._OnMsgMapsChanged) |
| 247 |
#self.mainWindow.application.Subscribe(SESSION_REPLACED, |
| 248 |
#self._OnMsgMapsChanged) |
| 249 |
self.__FillTree(self.map) |
| 250 |
|
| 251 |
def MoveCurrentItemTop(self): |
| 252 |
layer, group = self.GetSelectedHierarchy() |
| 253 |
|
| 254 |
if layer is not None: |
| 255 |
self.map.TopLayer(layer) |
| 256 |
else: |
| 257 |
assert False, "Shouldn't be allowed." |
| 258 |
pass |
| 259 |
|
| 260 |
def MoveCurrentItemUp(self): |
| 261 |
layer, group = self.GetSelectedHierarchy() |
| 262 |
|
| 263 |
if layer is not None: |
| 264 |
self.map.RaiseLayer(layer) |
| 265 |
else: |
| 266 |
assert False, "Shouldn't be allowed." |
| 267 |
pass |
| 268 |
|
| 269 |
def MoveCurrentItemDown(self): |
| 270 |
layer, group = self.GetSelectedHierarchy() |
| 271 |
|
| 272 |
if layer is not None: |
| 273 |
self.map.LowerLayer(layer) |
| 274 |
else: |
| 275 |
assert False, "Shouldn't be allowed." |
| 276 |
pass |
| 277 |
|
| 278 |
def MoveCurrentItemBottom(self): |
| 279 |
layer, group = self.GetSelectedHierarchy() |
| 280 |
|
| 281 |
if layer is not None: |
| 282 |
self.map.BottomLayer(layer) |
| 283 |
else: |
| 284 |
assert False, "Shouldn't be allowed." |
| 285 |
pass |
| 286 |
|
| 287 |
def OnCompareItems(self, item1, item2): |
| 288 |
|
| 289 |
data1 = self.GetPyData(item1) |
| 290 |
data2 = self.GetPyData(item2) |
| 291 |
|
| 292 |
if isinstance(data1, BaseLayer): |
| 293 |
layers = self.map.Layers() |
| 294 |
return layers.index(data2) - layers.index(data1) |
| 295 |
else: |
| 296 |
return wxTreeCtrl.OnCompareItems(self, item1, item2) |
| 297 |
|
| 298 |
def DoOnShowLayer(self): |
| 299 |
#self.__ShowHideLayer(True) |
| 300 |
layer, group = self.GetSelectedHierarchy() |
| 301 |
layer.SetVisible(True) |
| 302 |
|
| 303 |
def DoOnHideLayer(self): |
| 304 |
#self.__ShowHideLayer(False) |
| 305 |
layer, group = self.GetSelectedHierarchy() |
| 306 |
layer.SetVisible(False) |
| 307 |
|
| 308 |
def Sort(self): |
| 309 |
self.SortChildren(self.GetRootItem()) |
| 310 |
|
| 311 |
def GetSelectedHierarchy(self): |
| 312 |
id = self.GetSelection() |
| 313 |
|
| 314 |
if not id.IsOk(): |
| 315 |
return (None, None) |
| 316 |
|
| 317 |
layer = self.GetPyData(id) |
| 318 |
group = None |
| 319 |
|
| 320 |
if isinstance(layer, ClassGroup): |
| 321 |
id = self.GetItemParent(id) |
| 322 |
assert id.IsOk() |
| 323 |
group = layer |
| 324 |
layer = self.GetPyData(id) |
| 325 |
|
| 326 |
return (layer, group) |
| 327 |
|
| 328 |
def _OnMsgMapsChanged(self): |
| 329 |
#print self.map is self.mainWindow.Map() |
| 330 |
self.SetMap(self.mainWindow.Map()) |
| 331 |
|
| 332 |
def _OnSelChanged(self, event): |
| 333 |
self.__UpdateSelection() |
| 334 |
|
| 335 |
def _OnItemActivated(self, event): |
| 336 |
self.parent.DoOnProperties() |
| 337 |
|
| 338 |
def _OnMsgLayerChanged(self, layer): |
| 339 |
assert isinstance(layer, BaseLayer) |
| 340 |
|
| 341 |
id = self.layer2id[layer] |
| 342 |
assert id.IsOk() |
| 343 |
|
| 344 |
# XXX: yikes! this is so bad, we should be doing what is |
| 345 |
# commented out, but there is a problem with keeping |
| 346 |
# track of the images in the image list when we replace |
| 347 |
# a layer. it ends up causing a seg fault. |
| 348 |
self.__FillTree(self.map) |
| 349 |
self.__UpdateSelection() |
| 350 |
#self.__FillTreeLayer(id) |
| 351 |
|
| 352 |
def _OnMsgMapStackingChanged(self, *args): |
| 353 |
self.Sort() |
| 354 |
id = self.GetSelection() |
| 355 |
|
| 356 |
if id.IsOk(): |
| 357 |
self.EnsureVisible(id) |
| 358 |
self.__UpdateSelection() |
| 359 |
|
| 360 |
def _OnMsgMapLayersAddedRemoved(self, map): |
| 361 |
assert map is self.map |
| 362 |
|
| 363 |
self.__FillTree(self.map) |
| 364 |
self.__UpdateSelection() |
| 365 |
|
| 366 |
def _OnMsgLayerVisibilityChanged(self, layer): |
| 367 |
assert isinstance(layer, BaseLayer) |
| 368 |
|
| 369 |
self.__ShowHideLayer(layer) |
| 370 |
self.__UpdateSelection() |
| 371 |
|
| 372 |
def _OnMsgLayerTitleChanged(self, layer): |
| 373 |
|
| 374 |
id = self.layer2id[layer] |
| 375 |
if id.IsOk(): |
| 376 |
self.SetItemText(id, layer.Title()) |
| 377 |
self.__UpdateSelection() |
| 378 |
|
| 379 |
def __UpdateSelection(self): |
| 380 |
layer, group = self.GetSelectedHierarchy() |
| 381 |
self.parent.DoOnSelChanged(layer, group) |
| 382 |
|
| 383 |
def __FillTree(self, map): |
| 384 |
|
| 385 |
self.Freeze() |
| 386 |
|
| 387 |
self.__DeleteAllItems() |
| 388 |
|
| 389 |
if map.HasLayers(): |
| 390 |
|
| 391 |
self.image_list = wxImageList(BMP_SIZE_W, BMP_SIZE_H, False, 0) |
| 392 |
|
| 393 |
bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H) |
| 394 |
dc = wxMemoryDC() |
| 395 |
dc.SelectObject(bmp) |
| 396 |
dc.SetBrush(wxBLACK_BRUSH) |
| 397 |
dc.Clear() |
| 398 |
dc.SelectObject(wxNullBitmap) |
| 399 |
|
| 400 |
self.emptyImageIndex = \ |
| 401 |
self.image_list.AddWithColourMask(bmp, wxColour(0, 0, 0)) |
| 402 |
|
| 403 |
bmp = resource.GetBitmapResource("legend_icon_layer", |
| 404 |
wxBITMAP_TYPE_XPM) |
| 405 |
self.mapImageIndex = \ |
| 406 |
self.image_list.Add(bmp) |
| 407 |
|
| 408 |
self.AssignImageList(self.image_list) |
| 409 |
|
| 410 |
root = self.AddRoot("") |
| 411 |
|
| 412 |
for l in map.Layers(): |
| 413 |
id = self.PrependItem(root, l.Title()) |
| 414 |
self.SetItemImage(id, self.mapImageIndex) |
| 415 |
self.SetItemSelectedImage(id, self.mapImageIndex) |
| 416 |
|
| 417 |
l.Subscribe(LAYER_CHANGED, self._OnMsgLayerChanged) |
| 418 |
l.Subscribe(LAYER_VISIBILITY_CHANGED, |
| 419 |
self._OnMsgLayerVisibilityChanged) |
| 420 |
l.Subscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged) |
| 421 |
self.SetPyData(id, l) |
| 422 |
self.__SetVisibilityStyle(l.Visible(), id) |
| 423 |
|
| 424 |
self.layer2id[l] = id |
| 425 |
|
| 426 |
self.__FillTreeLayer(id) |
| 427 |
self.Expand(id) |
| 428 |
|
| 429 |
self.Thaw() |
| 430 |
|
| 431 |
def __FillTreeLayer(self, pid): |
| 432 |
layer = self.GetPyData(pid) |
| 433 |
|
| 434 |
self.Freeze() |
| 435 |
|
| 436 |
self.DeleteChildren(pid) |
| 437 |
|
| 438 |
if layer.HasClassification(): |
| 439 |
|
| 440 |
clazz = layer.GetClassification() |
| 441 |
|
| 442 |
shapeType = layer.ShapeType() |
| 443 |
|
| 444 |
show = layer.Visible() |
| 445 |
for g in clazz: |
| 446 |
if g.IsVisible(): |
| 447 |
id = self.AppendItem(pid, g.GetDisplayText()) |
| 448 |
self.SetPyData(id, g) |
| 449 |
self.__SetVisibilityStyle(show, id) |
| 450 |
|
| 451 |
bmp = self.__BuildGroupImage(g, shapeType) |
| 452 |
|
| 453 |
if bmp is None: |
| 454 |
self.SetItemImage(id, -1) |
| 455 |
self.SetItemSelectedImage(id, -1) |
| 456 |
else: |
| 457 |
i = self.image_list.Add(bmp) |
| 458 |
self.SetItemImage(id, i) |
| 459 |
self.SetItemSelectedImage(id, i) |
| 460 |
|
| 461 |
self.Thaw() |
| 462 |
|
| 463 |
def __BuildGroupImage(self, group, shapeType): |
| 464 |
|
| 465 |
bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H) |
| 466 |
#brush = wxBrush(Color2wxColour(item[1]), wxSOLID) |
| 467 |
dc = wxMemoryDC() |
| 468 |
dc.SelectObject(bmp) |
| 469 |
dc.Clear() |
| 470 |
|
| 471 |
self.previewer.Draw(dc, None, group.GetProperties(), shapeType) |
| 472 |
|
| 473 |
return bmp |
| 474 |
|
| 475 |
def __DeleteAllItems(self): |
| 476 |
|
| 477 |
while len(self.layer2id) > 0: |
| 478 |
layer, id = self.layer2id.popitem() |
| 479 |
layer.Unsubscribe(LAYER_CHANGED, |
| 480 |
self._OnMsgLayerChanged) |
| 481 |
layer.Unsubscribe(LAYER_VISIBILITY_CHANGED, |
| 482 |
self._OnMsgLayerVisibilityChanged) |
| 483 |
layer.Unsubscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged) |
| 484 |
|
| 485 |
self.DeleteAllItems() |
| 486 |
|
| 487 |
def __SetVisibilityStyle(self, visible, id): |
| 488 |
font = self.GetItemFont(id) |
| 489 |
|
| 490 |
if visible: |
| 491 |
font.SetStyle(wxNORMAL) |
| 492 |
color = wxBLACK |
| 493 |
else: |
| 494 |
#font.SetStyle(wxITALIC) |
| 495 |
font.SetStyle(wxNORMAL) |
| 496 |
color = wxLIGHT_GREY |
| 497 |
|
| 498 |
self.SetItemTextColour(id, color) |
| 499 |
self.SetItemFont(id, font) |
| 500 |
|
| 501 |
def __ShowHideLayer(self, layer): |
| 502 |
parent = self.layer2id[layer] |
| 503 |
assert parent.IsOk() |
| 504 |
|
| 505 |
visible = layer.Visible() |
| 506 |
|
| 507 |
self.__SetVisibilityStyle(visible, parent) |
| 508 |
|
| 509 |
id, cookie = self.GetFirstChild(parent, 123) |
| 510 |
|
| 511 |
while id.IsOk(): |
| 512 |
self.__SetVisibilityStyle(visible, id) |
| 513 |
id, cookie = self.GetNextChild(parent, cookie) |
| 514 |
|
| 515 |
class ScaleBarBitmap(wxBoxSizer): |
| 516 |
|
| 517 |
def __init__(self, parent, map, mainWindow): |
| 518 |
# While the width is fixed, get the height _now_. |
| 519 |
dc = wxMemoryDC() |
| 520 |
textwidth, textheight = dc.GetTextExtent("%d"%0) |
| 521 |
self.width = 210 |
| 522 |
self.height = textheight + 3*2 + 8 |
| 523 |
|
| 524 |
wxBoxSizer.__init__(self, wxVERTICAL) |
| 525 |
bmp=wxEmptyBitmap(self.width, self.height) |
| 526 |
self.scalebarBitmap = wxStaticBitmap(parent, -1, bmp) |
| 527 |
self.Add(self.scalebarBitmap, 0, wxALIGN_CENTER|wxLEFT|wxTOP|wxRIGHT, 1) |
| 528 |
|
| 529 |
self.mainWindow = mainWindow |
| 530 |
self.parent = parent |
| 531 |
self.canvas = None |
| 532 |
self.SetCanvas(self.mainWindow.canvas) |
| 533 |
|
| 534 |
def SetCanvas(self, canvas): |
| 535 |
sub_list = [(SCALE_CHANGED, self._OnMsgScaleChanged)] |
| 536 |
|
| 537 |
if self.canvas is not None: |
| 538 |
for msg, func in sub_list: self.canvas.Unsubscribe(msg, func) |
| 539 |
|
| 540 |
self.canvas = canvas |
| 541 |
self.scalebar = ScaleBar(canvas.map) |
| 542 |
|
| 543 |
if self.canvas is not None: |
| 544 |
for msg, func in sub_list: self.canvas.Subscribe(msg, func) |
| 545 |
self.__SetScale(self.canvas.scale) |
| 546 |
|
| 547 |
def _OnMsgScaleChanged(self, scale): |
| 548 |
self.__SetScale(scale) |
| 549 |
|
| 550 |
def __SetScale(self, scale): |
| 551 |
bmp = wxEmptyBitmap(self.width, self.height) |
| 552 |
dc = wxMemoryDC() |
| 553 |
dc.SelectObject(bmp) |
| 554 |
dc.Clear() |
| 555 |
|
| 556 |
self.scalebar.DrawScaleBar(scale, dc, (0,0), dc.GetSizeTuple()) |
| 557 |
|
| 558 |
self.scalebarBitmap.SetBitmap(bmp) |
| 559 |
|
Parent Directory
| 
Revision Log