ENH: SlicerQT - Improve QT Designer launcher:

  - Comment
  - Handle Darwin OS to be able to launch designer
  - Handle Cygwin in order to update OS environment properly

git-svn-id: http://svn.slicer.org/Slicer4/trunk@11550 3bd1e089-480b-0410-8dfb-8563597acbee

Utilities/Designer/CMakeLists.txt

-# Configure Qt Designer launcher
-IF(Slicer3_USE_QT)
-  GET_TARGET_PROPERTY(output_directory ${PROJECT_NAME} LIBRARY_OUTPUT_DIRECTORY)
-  #MESSAGE(STATUS CMAKE_CONFIGURATION_TYPES:${CMAKE_CONFIGURATION_TYPES})
-  #MESSAGE(STATUS CMAKE_BUILD_TYPE:${CMAKE_BUILD_TYPE})
-  IF(CMAKE_CONFIGURATION_TYPES)
-    FOREACH(config ${CMAKE_CONFIGURATION_TYPES})
-      SET(LIBRARY_OUTPUT_DIRECTORY ${output_directory}/${config})
-      SET(designer_launcher "${Slicer3_BINARY_DIR}/Designer-${config}.py")
-      CONFIGURE_FILE(
-        ${CMAKE_CURRENT_SOURCE_DIR}/Designer.py.in
-        ${designer_launcher}
-        IMMEDIATE
-        )
-      MESSAGE(STATUS "Configuring Designer launcher:"${designer_launcher})
-    ENDFOREACH(config)
-  ELSE(CMAKE_CONFIGURATION_TYPES)
-    SET(LIBRARY_OUTPUT_DIRECTORY ${output_directory})
-    SET(designer_launcher "${Slicer3_BINARY_DIR}/Designer.py")
+#
+# Configure Qt Designer launcher (Designer.py.in) allowing to:
+# - update the environment variable QT_PLUGIN_PATH with Slicer QT Plugin path
+# - update PATH with Slicer libraries
+# - start the designer
+#
+
+# --------------------------------------------------------------
+SET(designer_launcher_project_name SlicerQT)
+SET(designer_launcher_directory ${Slicer3_BINARY_DIR})
+# --------------------------------------------------------------
+
+GET_TARGET_PROPERTY(output_directory ${designer_launcher_project_name} LIBRARY_OUTPUT_DIRECTORY)
+#MESSAGE(STATUS CMAKE_CONFIGURATION_TYPES:${CMAKE_CONFIGURATION_TYPES})
+#MESSAGE(STATUS CMAKE_BUILD_TYPE:${CMAKE_BUILD_TYPE})
+#MESSAGE(STATUS output_directory:${output_directory})
+
+# Convert path
+FILE(TO_NATIVE_PATH ${LIBRARY_OUTPUT_DIRECTORY} NATIVE_LIBRARY_OUTPUT_DIRECTORY)
+FILE(TO_NATIVE_PATH ${QT_BINARY_DIR} NATIVE_QT_BINARY_DIR)
+
+IF(CMAKE_CONFIGURATION_TYPES)
+  # Loop through all Configuration types
+  # For further details, see http://www.cmake.org/cmake/help/cmake-2-8-docs.html#variable:CMAKE_CONFIGURATION_TYPES
+  FOREACH(config ${CMAKE_CONFIGURATION_TYPES})
+    SET(LIBRARY_OUTPUT_DIRECTORY ${output_directory}/${config})
+    SET(designer_launcher "${designer_launcher_directory}/Designer-${config}.py")
     CONFIGURE_FILE(
       ${CMAKE_CURRENT_SOURCE_DIR}/Designer.py.in
       ${designer_launcher}
       IMMEDIATE
       )
-    MESSAGE(STATUS "Configuring Designer launcher:"${designer_launcher})
-  ENDIF(CMAKE_CONFIGURATION_TYPES)
-ENDIF(Slicer3_USE_QT)
+    MESSAGE(STATUS "Configuring Designer launcher: "${designer_launcher})
+  ENDFOREACH(config)
+  
+ELSE(CMAKE_CONFIGURATION_TYPES)
+
+  SET(LIBRARY_OUTPUT_DIRECTORY ${output_directory})
+  SET(designer_launcher "${designer_launcher_directory}/Designer.py")
+  CONFIGURE_FILE(
+    ${CMAKE_CURRENT_SOURCE_DIR}/Designer.py.in
+    ${designer_launcher}
+    IMMEDIATE
+    )
+  MESSAGE(STATUS "Configuring Designer launcher: "${designer_launcher})
+  
+ENDIF(CMAKE_CONFIGURATION_TYPES)

Utilities/Designer/Designer.py.in

 #! /usr/bin/env python
 """
-This module allows to:
- - update the environement variable QT_PLUGIN_PATH with Slicer QT Plugin path
+After been configured properly using CMAKE, 
+this module allows to:
+ - update the environment variable QT_PLUGIN_PATH with Slicer QT Plugin path
  - update PATH with Slicer libraries
  - start the designer
 """
@@ -9,26 +10,33 @@ This module allows to:
 import os
 import sys
   
-def startDesigner(argv):
+def startDesigner(open_command, argv):
   "Start QT Designer"
   
-  addEnvVariable('QT_PLUGIN_PATH', '@LIBRARY_OUTPUT_DIRECTORY@')
-  addEnvVariable('PATH', '@LIBRARY_OUTPUT_DIRECTORY@')
-  os.execv('@QT_BINARY_DIR@/'+argv[0], argv)
+  addEnvVariable('QT_PLUGIN_PATH', '@NATIVE_LIBRARY_OUTPUT_DIRECTORY@')
+  addEnvVariable('PATH', '@NATIVE_LIBRARY_OUTPUT_DIRECTORY@')
+  os.execv(open_command+'@NATIVE_QT_BINARY_DIR@'+os.sep+argv[0], argv)
 
 def addEnvVariable(name, value):
-  "Add variable to environement"
-  
+  "Add variable to environment"
+
+  # If platform is cygwin, force pathseparator to be ':'
+  pathsep = os.pathsep
+  if (sys.platform == 'cygwin'):
+    pathsep = ':'
+
+  # Update OS environment
   if (name in os.environ):
     sep = ''
     if (os.environ[name] != ""):
-      sep = os.pathsep
+      sep = pathsep
   
     os.environ[name] += (sep + value)
   
   else:
     os.environ[name] = value
 
+
 # Entry point
 if __name__ == "__main__":
   if (len(sys.argv) > 2):
@@ -38,6 +46,15 @@ designer.py - Start QT Designer with Slicer plugins
 Use: python designer.py [UI file]
 """
   else:
+    # Default executable name
+    executable_name ='designer'
+    open_command = ''
+    
+    # Handle MACOSX case
+    if sys.platform == 'darwin':
+      executable_name = 'Designer.app'
+      open_command = 'open '
+
     # Update first value to match executable name
-    sys.argv[0] ='designer'
-    startDesigner(sys.argv);
+    sys.argv[0] = executable_name
+    startDesigner(open_command, sys.argv);