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GdalTools: display a friendly message when python-gdal is missing

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This commit is contained in:
Giuseppe Sucameli 2012-04-15 13:22:35 +02:00
parent be8ec1bbeb
commit f844e2f407
1 changed files with 26 additions and 7 deletions
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33
python/plugins/GdalTools/GdalTools.py
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@ -25,23 +25,40 @@ from qgis.core import *
# Initialize Qt resources from file resources_rc.py
import resources_rc
# Import required modules and if missing show the right module's name
req_mods = { "osgeo": "osgeo [python-gdal]" }
# are all dependecies satisfied?
valid = True
# Import required modules
req_mods = { "osgeo": "osgeo [python-gdal]" }
try:
from osgeo import gdal
from osgeo import ogr
except ImportError, e:
error_str = e.args[0]
error_mod = error_str.replace( "No module named ", "" )
if req_mods.has_key( error_mod ):
error_str = error_str.replace( error_mod, req_mods[error_mod] )
raise ImportError( error_str )
valid = False
# if the plugin is shipped with QGis catch the exception and
# display an error message
import os.path
qgisUserPluginPath = os.path.abspath( os.path.join( str( QgsApplication.qgisSettingsDirPath() ), "python") )
if not os.path.dirname(__file__).startswith( qgisUserPluginPath ):
title = QCoreApplication.translate( "GdalTools", "Plugin error" )
message = QCoreApplication.translate( "GdalTools", u'Unable to load %1 plugin. \nThe required "%2" module is missing. \nInstall it and try again.' )
import qgis.utils
QMessageBox.warning( qgis.utils.iface.mainWindow(), title, message.arg( "GdalTools" ).arg( req_mods["osgeo"] ) )
else:
# if a module is missing show a more friendly module's name
error_str = e.args[0]
error_mod = error_str.replace( "No module named ", "" )
if req_mods.has_key( error_mod ):
error_str = error_str.replace( error_mod, req_mods[error_mod] )
raise ImportError( error_str )
class GdalTools:
def __init__( self, iface ):
if not valid: return
# Save reference to the QGIS interface
self.iface = iface
try:
@ -72,6 +89,7 @@ class GdalTools:
QCoreApplication.installTranslator( self.translator )
def initGui( self ):
if not valid: return
if int( self.QgisVersion ) < 1:
QMessageBox.warning( self.iface.getMainWindow(), "Gdal Tools",
QCoreApplication.translate( "GdalTools", "Quantum GIS version detected: " ) +unicode( self.QgisVersion )+".xx\n"
@ -258,6 +276,7 @@ class GdalTools:
menu_bar.insertMenu( lastAction, self.menu )
def unload( self ):
if not valid: return
pass
def doBuildVRT( self ):