def display_mapfile_validity(self):
"""Display on GUI the validity of current mapfile."""
if self.editor.getText(
) <> '' and self.temp_mapfile and os.path.exists(self.temp_mapfile):
self.update_file()
renderer = MapfileRenderer(self.temp_mapfile)
message = renderer.load_mapfile()
if self.messageTextEdit is not None:
self.messageTextEdit.append(message)
mapobj = renderer.getMapObj()
if mapobj is None:
self.addLayerButton.setEnabled(False)
self.replaceLayerButton.setEnabled(False)
else:
self.addLayerButton.setEnabled(True)
self.replaceLayerButton.setEnabled(True)
self.editor.markerDeleteAll()
# display error line
regexp = re.compile('.*\(line ([0-9]*)\)')
try:
# get error line number
linenb = int(regexp.findall(message.split("\n")[-1])[-1])
# add a marker on error line in editor
# FIXME : move this code into editor's mark_error()
self.editor.markerAdd(linenb - 1, self.editor.ARROW_MARKER_NUM)
except ValueError:
# error with no line number, just ignore
pass
except IndexError:
pass
def loadMapfile(self, mapfile, layers=(), name=None):
message = ''
self.mapfile = mapfile
self.layers = layers
if self.mapfile == "":
return False
# open mapfile
self.maprenderer = MapfileRenderer(str(self.mapfile))
message = self.maprenderer.load_mapfile()
self.messageTextEdit.append(message)
mapobj = self.maprenderer.getMapObj()
if mapobj is None:
return False
if name is None:
self.setLayerName(mapobj.name)
else:
self.setLayerName(name)
# get projection as EPSG
crs = QgsCoordinateReferenceSystem()
crs.createFromProj4(self.maprenderer.getProj())
if not crs.isValid():
crs.validate()
srs = "EPSG:%d" % crs.epsg()
# always use default format for now
self.maprenderer.setup(self.layers, srs)
# set projection
self.setCrs(crs)
# TODO: set extents
# extents = self.maprenderer.getExtents()
# self.setExtent(QgsRectangle(extents[0], extents[1], extents[2], extents[3]))
if self.pixmap == None:
self.pixmap = QPixmap()
# trigger repaint
self.setCacheImage(None)
self.emit(SIGNAL("repaintRequested()"))
return True