add a "starter GUI" + work-a-round for tkinter usage with virtualenv …

…under windows

Squashed commit of the following:

commit e7beb32
Author: JensDiemer <git@jensdiemer.de>
Date:   Wed Aug 19 11:42:41 2015 +0200

    remove obsolete starter files

commit 5ed7406
Author: JensDiemer <git@jensdiemer.de>
Date:   Wed Aug 19 11:38:15 2015 +0200

    "starter GUI"

commit 0c1add8
Author: JensDiemer <git@jensdiemer.de>
Date:   Wed Aug 19 11:27:20 2015 +0200

    Add work-a-round for tkinter usage with virtualenv under windows,
see:

    pypa/virtualenv#93

commit a35a94c
Author: JensDiemer <git@jensdiemer.de>
Date:   Wed Aug 19 09:42:45 2015 +0200

    move settings in a frame, add status bar + code cleanup

commit e6fa73e
Author: JensDiemer <git@jensdiemer.de>
Date:   Tue Aug 18 23:06:12 2015 +0200

    WIP: seperate in frame/class

commit b7008d6
Author: JensDiemer <git@jensdiemer.de>
Date:   Tue Aug 18 22:06:48 2015 +0200

    replace .sh scripts

commit 3cecd83
Author: JensDiemer <git@jensdiemer.de>
Date:   Tue Aug 18 17:27:39 2015 +0200

    WIP: starter GUI

README.creole

@@ -110,6 +110,30 @@ So you can easy update them e.g.:
 /home/FooBar/DragonPy_env/src/dragonpy$ git pull
 }}}
 
+==== start DragonPy
+
+The is a simple "starter GUI", just call the cli without arguments:
+
+{{{~/DragonPy_env/bin/DragonPy}}}
+
+Or call it in a activated environment, e.g.:
+{{{
+/home/FooBar$ cd DragonPy_env
+/home/FooBar/DragonPy_env$ source bin/activate
+(DragonPy_env)~/DragonPy_env$ DragonPy
+}}}
+
+It is possible to start machines directly:
+{{{
+(DragonPy_env)~/DragonPy_env$ DragonPy --machine=Dragon32 run
+}}}
+
+more info:
+{{{
+(DragonPy_env)~/DragonPy_env$ DragonPy --help
+}}}
+
+
 === Windows
 
 There are several ways to install the project under windows.
@@ -126,6 +150,13 @@ The default {{{boot_dragonpy.cmd}}} will install via {{{Python Package Index}}}
 
 There exist some {{{.cmd}}} batch files for easy startup in {{{%APPDATA%\DragonPy_env\}}}
 
+==== start DragonPy
+
+The is a simple "starter GUI", just call the cli without arguments:
+
+{{{%APPDATA%\DragonPy_env\Scripts\DragonPy.exe}}}
+
+
 
 == ROMs
 
@@ -143,35 +174,6 @@ sbc09 and vectrex ROMs are included.
 All ROM files and download will be checked by SHA1 value, before use.
 
 
-== cli example
-
-start Dragon 32:
-{{{
-/home/FooBar$ cd DragonPy_env
-/home/FooBar/DragonPy_env$ source bin/activate
-(DragonPy_env)~/DragonPy_env$ DragonPy --machine=Dragon32 run
-}}}
-
-start Dragon 64:
-{{{
-(DragonPy_env)~/DragonPy_env$ DragonPy --machine=Dragon64 run
-}}}
-
-start CoCo with Extended Color Basic v1.1:
-{{{
-(DragonPy_env)~/DragonPy_env$ DragonPy --machine=CoCo2b run
-}}}
-
-start Multicomp 6809:
-{{{
-(DragonPy_env)~/DragonPy_env$ DragonPy --machine=Multicomp6809 run
-}}}
-
-start Lennart's 6809 single board computer:
-{{{
-(DragonPy_env)~/DragonPy_env$ DragonPy --machine=sbc09 run
-}}}
-
 == unittests ==
 
 === run unittests ===
@@ -412,6 +414,9 @@ Six is a Python 2 and 3 compatibility library.
 
 == History
 
+* [[https://github.com/jedie/DragonPy/compare/v0.5.0...v0.5.1|??.08.2015 - v0.5.1]]: (not released, yet)
+** Add a "starter GUI"
+** Add work-a-round for tkinter usage with virtualenv under windows, see: [[https://github.com/pypa/virtualenv/issues/93|virtualenv issues #93]]
 * [[https://github.com/jedie/DragonPy/compare/v0.4.0...v0.5.0|18.08.2015 - v0.5.0]]:
 ** ROM files will be downloaded on-the-fly ({{{.sh}}} scripts are removed. So it's easier to use under Windows)
 * [[https://github.com/jedie/DragonPy/compare/v0.3.2...v0.4.0|26.05.2015 - v0.4.0]]:

dragonpy/__init__.py

@@ -1,2 +1,74 @@
+import os
+import sys
 
-__version__ = "0.5.0"
+
+__version__ = "0.5.1.dev0"
+
+
+def fix_virtualenv_tkinter():
+    """
+    work-a-round for tkinter under windows in a virtualenv:
+      "TclError: Can't find a usable init.tcl..."
+    Known bug, see: https://github.com/pypa/virtualenv/issues/93
+
+    There are "fix tk" file here:
+
+          C:\Python27\Lib\lib-tk\FixTk.py
+          C:\Python34\Lib\tkinter\_fix.py
+
+    These modules will be automatic imported by tkinter import.
+
+    The fix set theses environment variables:
+
+        TCL_LIBRARY C:\Python27\tcl\tcl8.5
+        TIX_LIBRARY C:\Python27\tcl\tix8.4.3
+        TK_LIBRARY C:\Python27\tcl\tk8.5
+
+        TCL_LIBRARY C:\Python34\tcl\tcl8.6
+        TIX_LIBRARY C:\Python34\tcl\tix8.4.3
+        TK_LIBRARY C:\Python34\tcl\tk8.6
+
+    but only if:
+
+          os.path.exists(os.path.join(sys.prefix,"tcl"))
+
+    And the virtualenv activate script will change the sys.prefix
+    to the current env. So we temporary change it back to sys.real_prefix
+    and import the fix module.
+    If the fix module was imported before, then we reload it.
+    """
+    if "TCL_LIBRARY" in os.environ:
+        # Fix not needed (e.g. virtualenv issues #93 fixed?)
+        return
+
+    if not hasattr(sys, "real_prefix"):
+        # we are not in a activated virtualenv
+        return
+
+    if sys.version_info[0] == 2:
+        # Python v2
+        virtualprefix = sys.prefix
+        sys.prefix = sys.real_prefix
+
+        import FixTk
+
+        if "TCL_LIBRARY" not in os.environ:
+            reload(FixTk)
+
+        sys.prefix = virtualprefix
+    else:
+        # Python v3
+        virtualprefix = sys.base_prefix
+        sys.base_prefix = sys.real_prefix
+
+        from tkinter import _fix
+
+        if "TCL_LIBRARY" not in os.environ:
+            from imp import reload
+            reload(_fix)
+
+        sys.base_prefix = virtualprefix
+
+
+if sys.platform.startswith("win"):
+    fix_virtualenv_tkinter()

dragonpy/core/cli.py

@@ -16,8 +16,7 @@
 import atexit
 import locale
 import logging
-import unittest
-from dragonpy.tests import run_tests
+import sys
 
 try:
     # https://pypi.python.org/pypi/click/
@@ -35,6 +34,8 @@
 from basic_editor.editor import run_basic_editor
 
 import dragonpy
+from dragonpy.core.gui_starter import start_gui
+from dragonpy.tests import run_tests
 from dragonpy.CoCo.config import CoCo2bCfg
 from dragonpy.CoCo.machine import run_CoCo2b
 from dragonpy.Dragon32.config import Dragon32Cfg
@@ -204,5 +205,18 @@ def tests(verbosity, failfast):
     run_tests(verbosity, failfast)
 
 
+def main(confirm_exit=True):
+    if len(sys.argv)==1:
+        if confirm_exit:
+            def confirm():
+                # don't close the terminal window directly
+                # important for windows users ;)
+                click.prompt("Please press [ENTER] to exit", default="", show_default=False)
+            atexit.register(confirm)
+
+        start_gui(__file__, machine_dict)
+    else:
+        cli()
+
 if __name__ == "__main__":
-    cli()
+    main()