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#!/usr/bin/env python
# Copyright 2008, Google Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
# 3. Neither the name of Google Inc. nor the names of its contributors may be
# used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# A simple graphical application that parses a local or remote KML or KMZ file
# and displays the parsed Features in a tree format.
# Usage: call ./domviewer.py from a terminal command line, then use the
# File > Open File command to load a file. You may also supply a file
# (local filesystem or over http) to open on the command line as
# ./domviewer.py input.kml
import os
import sys
import tempfile
import urllib2
import zipfile
from idlelib.TreeWidget import TreeItem, TreeNode
from Tkinter import *
from tkFileDialog import askopenfilename
from tkSimpleDialog import askstring
from tkMessageBox import showwarning
import kmldom
class DomTreeItem(TreeItem):
def __init__(self, element):
self.__element = element
if element.has_name():
self.__name = element.get_name()
elif element.IsA(kmldom.Type_Document):
self.__name = 'Unnamed Document'
elif element.IsA(kmldom.Type_Folder):
self.__name = 'Unnamed Folder'
elif element.IsA(kmldom.Type_Placemark):
self.__name = 'Unnamed Placemark'
elif element.IsA(kmldom.Type_ScreenOverlay):
self.__name = 'Unnamed ScreenOverlay'
elif element.IsA(kmldom.Type_PhotoOverlay):
self.__name = 'Unnamed PhotoOverlay'
elif element.IsA(kmldom.Type_GroundOverlay):
self.__name = 'Unnamed GroundOverlay'
elif element.IsA(kmldom.Type_NetworkLink):
self.__name = 'Unnamed NetworkLink'
else:
self.__name = 'Unknown Feature'
def GetText(self):
return self.__name
def GetSubList(self):
container = kmldom.AsContainer(self.__element)
if container:
size = container.get_feature_array_size()
if size == 0: return
child_list = []
for i in range(container.get_feature_array_size()):
child_list.append(container.get_feature_array_at(i))
children = [DomTreeItem(child) for child in child_list]
return children
def IsExpandable(self):
container = kmldom.AsContainer(self.__element)
if container:
return container.get_feature_array_size() > 0
return False
class DomViewer:
def __init__(self, root):
self.__root = root
self.__yscrollbar = Scrollbar(self.__root)
self.__yscrollbar.pack(side=RIGHT, fill=Y)
self.__canvas = Canvas(self.__root, yscrollcommand=self.__yscrollbar.set)
self.__canvas.pack(fill=BOTH, expand=YES)
self.__yscrollbar.config(command=self.__canvas.yview)
self.__filetypes = [('KML or KMZ files', '*.km*')]
self.__CreateMenus()
def __CreateMenus(self):
self.__app_menu = Menu(self.__root)
self.__root.config(menu=self.__app_menu)
self.__filemenu = Menu(self.__app_menu)
self.__app_menu.add_cascade(label='File', menu=self.__filemenu)
self.__filemenu.add_command(label='Open File...', command=self.__OpenFile)
self.__filemenu.add_command(label='Open URL...', command=self.__OpenURL)
self.__filemenu.add_command(label='Quit', command=self.__Quit)
def __SetDom(self, dom):
item = DomTreeItem(dom)
node = TreeNode(self.__canvas, None, item)
node.update()
node.expand()
def __GetRootFeature(self, element):
kml = kmldom.AsKml(element)
if kml:
if kml.has_feature():
return kml.get_feature()
else:
return None
feature = kmldom.AsFeature(element)
if feature:
return feature
return None
def __ReadKmlFromKmz(self, filename):
if not zipfile.is_zipfile(filename):
showwarning('Error', '%s is not a valid KMZ file' % filename)
return None
zfile = zipfile.ZipFile(filename, 'r')
if 'doc.kml' in zfile.namelist():
kml = zfile.read('doc.kml')
else:
kml = zfile.read(zfile.namelist()[0])
if not kml:
showwarning('Error', 'Failed reading KML from KMZ')
return None
return kml
def LoadFile(self, filename):
# Public, can be called indirectly from command line.
if zipfile.is_zipfile(filename):
kml = self.__ReadKmlFromKmz(filename)
else:
kml = open(filename).read() # consume the entire file
dom = self.__GetRootFeature(kmldom.ParseKml(kml))
if dom is None:
showwarning('Bad KML', 'The KML data could not be parsed')
return
self.__SetDom(dom)
def __OpenFile(self):
f = askopenfilename(parent=self.__root, filetypes=self.__filetypes)
if not f:
return
try:
self.LoadFile(f)
except IOError:
showwarning('OpenFile', 'Cannot open the file')
return
def LoadUrl(self, url):
# Public, can be called indirectly from command line.
response = urllib2.urlopen(url).read()
(fd, name) = tempfile.mkstemp()
os.write(fd, response)
os.close(fd)
self.LoadFile(name)
os.unlink(name)
def __OpenURL(self):
f = askstring('Open URL', 'URL', parent=self.__root,
initialvalue='http://')
if not f:
return
try:
self.LoadUrl(f)
except:
showwarning('OpenUrl', 'Cannot open the URL: %s' %f)
return
def __Quit(self, event=None):
self.__root.quit()
def main(argv):
if len(argv) > 2:
print 'usage: %s kmlfile' % argv[0]
sys.exit(1)
root = Tk()
app = DomViewer(root)
if (len(argv) == 2):
if argv[1].startswith('http://'):
try: app.LoadUrl(argv[1])
except: pass
else:
try: app.LoadFile(argv[1])
except: pass
root.mainloop()
if __name__ == '__main__':
main(sys.argv)
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