From b6f2b4138be9dc9d250dda819f901872c13876be Mon Sep 17 00:00:00 2001
From: Tom Rondeau
Date: Fri, 23 Sep 2011 17:02:45 -0400
Subject: qtgui: fixing import statements in qtgui apps to print an error if
 extra python modules are not available.

---
 gr-qtgui/apps/pyqt_example_c.py | 32 +++++++++++++++++++++++++++++---
 gr-qtgui/apps/pyqt_example_f.py | 32 +++++++++++++++++++++++++++++---
 gr-qtgui/apps/pyqt_time_c.py    | 32 +++++++++++++++++++++++++++++---
 gr-qtgui/apps/pyqt_time_f.py    | 32 +++++++++++++++++++++++++++++---
 gr-qtgui/apps/qt_digital.py     | 39 +++++++++++++++++++++++++++++++++++----
 gr-qtgui/apps/usrp2_display.py  |  2 +-
 gr-qtgui/apps/usrp_display.py   |  2 +-
 7 files changed, 153 insertions(+), 18 deletions(-)

diff --git a/gr-qtgui/apps/pyqt_example_c.py b/gr-qtgui/apps/pyqt_example_c.py
index 607ab12ee..553d346c9 100755
--- a/gr-qtgui/apps/pyqt_example_c.py
+++ b/gr-qtgui/apps/pyqt_example_c.py
@@ -1,9 +1,35 @@
 #!/usr/bin/env python
+#
+# Copyright 2011 Free Software Foundation, Inc.
+# 
+# This file is part of GNU Radio
+# 
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+# 
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
 
 from gnuradio import gr
-from gnuradio import qtgui
-from PyQt4 import QtGui, QtCore
-import sys, sip
+import sys
+
+try:
+    from gnuradio import qtgui
+    from PyQt4 import QtGui, QtCore
+    import sip
+except ImportError:
+    print "Error: Program requires PyQt4 and gr-qtgui."
+    sys.exit(1)
 
 class dialog_box(QtGui.QWidget):
     def __init__(self, display, control):
diff --git a/gr-qtgui/apps/pyqt_example_f.py b/gr-qtgui/apps/pyqt_example_f.py
index 2d957c85a..5e432fe78 100755
--- a/gr-qtgui/apps/pyqt_example_f.py
+++ b/gr-qtgui/apps/pyqt_example_f.py
@@ -1,9 +1,35 @@
 #!/usr/bin/env python
+#
+# Copyright 2011 Free Software Foundation, Inc.
+# 
+# This file is part of GNU Radio
+# 
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+# 
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
 
 from gnuradio import gr
-from gnuradio import qtgui
-from PyQt4 import QtGui, QtCore
-import sys, sip
+import sys
+
+try:
+    from gnuradio import qtgui
+    from PyQt4 import QtGui, QtCore
+    import sip
+except ImportError:
+    print "Error: Program requires PyQt4 and gr-qtgui."
+    sys.exit(1)
 
 class dialog_box(QtGui.QWidget):
     def __init__(self, display, control):
diff --git a/gr-qtgui/apps/pyqt_time_c.py b/gr-qtgui/apps/pyqt_time_c.py
index fa7d60e81..a47302d19 100755
--- a/gr-qtgui/apps/pyqt_time_c.py
+++ b/gr-qtgui/apps/pyqt_time_c.py
@@ -1,9 +1,35 @@
 #!/usr/bin/env python
+#
+# Copyright 2011 Free Software Foundation, Inc.
+# 
+# This file is part of GNU Radio
+# 
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+# 
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
 
 from gnuradio import gr
-from gnuradio import qtgui
-from PyQt4 import QtGui, QtCore
-import sys, sip
+import sys
+
+try:
+    from gnuradio import qtgui
+    from PyQt4 import QtGui, QtCore
+    import sip
+except ImportError:
+    print "Error: Program requires PyQt4 and gr-qtgui."
+    sys.exit(1)
 
 class dialog_box(QtGui.QWidget):
     def __init__(self, display, control):
diff --git a/gr-qtgui/apps/pyqt_time_f.py b/gr-qtgui/apps/pyqt_time_f.py
index 1b9efa10d..835b42a75 100755
--- a/gr-qtgui/apps/pyqt_time_f.py
+++ b/gr-qtgui/apps/pyqt_time_f.py
@@ -1,9 +1,35 @@
 #!/usr/bin/env python
+#
+# Copyright 2011 Free Software Foundation, Inc.
+# 
+# This file is part of GNU Radio
+# 
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+# 
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
 
 from gnuradio import gr
-from gnuradio import qtgui
-from PyQt4 import QtGui, QtCore
-import sys, sip
+import sys
+
+try:
+    from gnuradio import qtgui
+    from PyQt4 import QtGui, QtCore
+    import sip
+except ImportError:
+    print "Error: Program requires PyQt4 and gr-qtgui."
+    sys.exit(1)
 
 class dialog_box(QtGui.QWidget):
     def __init__(self, display, control):
diff --git a/gr-qtgui/apps/qt_digital.py b/gr-qtgui/apps/qt_digital.py
index 99c799f2a..2bc039a31 100755
--- a/gr-qtgui/apps/qt_digital.py
+++ b/gr-qtgui/apps/qt_digital.py
@@ -1,11 +1,42 @@
 #!/usr/bin/env python
+#
+# Copyright 2011 Free Software Foundation, Inc.
+# 
+# This file is part of GNU Radio
+# 
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+# 
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
 
 from gnuradio import gr, blks2
-from gnuradio import qtgui
 from gnuradio import eng_notation
-from PyQt4 import QtGui, QtCore
-import sys, sip
-import scipy
+import sys
+
+try:
+    from gnuradio import qtgui
+    from PyQt4 import QtGui, QtCore
+    import sip
+except ImportError:
+    print "Error: Program requires PyQt4 and gr-qtgui."
+    sys.exit(1)
+
+try:
+    import scipy
+except ImportError:
+    print "Error: Program requires scipy (see: www.scipy.org)."
+    sys.exit(1)
 
 try:
     from qt_digital_window import Ui_DigitalWindow
diff --git a/gr-qtgui/apps/usrp2_display.py b/gr-qtgui/apps/usrp2_display.py
index ab1a6f742..497bcc00e 100755
--- a/gr-qtgui/apps/usrp2_display.py
+++ b/gr-qtgui/apps/usrp2_display.py
@@ -33,7 +33,7 @@ try:
     from PyQt4 import QtGui, QtCore
     import sip
 except ImportError:
-    print "Please install gr-qtgui."
+    print "Error: Program requires PyQt4 and gr-qtgui."
     sys.exit(1)
 
 try:
diff --git a/gr-qtgui/apps/usrp_display.py b/gr-qtgui/apps/usrp_display.py
index 131bc4a7e..888bb6338 100755
--- a/gr-qtgui/apps/usrp_display.py
+++ b/gr-qtgui/apps/usrp_display.py
@@ -33,7 +33,7 @@ try:
     from PyQt4 import QtGui, QtCore
     import sip
 except ImportError:
-    print "Please install gr-qtgui."
+    print "Error: Program requires PyQt4 and gr-qtgui."
     sys.exit(1)
 
 try:
-- 
cgit