#1171: try to detect the keyboard layout

git-svn-id: https://xpra.org/svn/Xpra/trunk@15092 3bb7dfac-3a0b-4e04-842a-767bc560f471

Author: totaam

src/xpra/platform/darwin/keyboard.py

@@ -1,6 +1,6 @@
 # This file is part of Xpra.
 # Copyright (C) 2010 Nathaniel Smith <[email protected]>
-# Copyright (C) 2011-2014 Antoine Martin <[email protected]>
+# Copyright (C) 2011-2017 Antoine Martin <[email protected]>
 # Xpra is released under the terms of the GNU GPL v2, or, at your option, any
 # later version. See the file COPYING for details.
 
@@ -34,6 +34,27 @@ def __init__(self):
         self.num_lock_keycode = NUM_LOCK_KEYCODE
         self.key_translations = {}
 
+
+    def get_layout_spec(self):
+        layout = "us"
+        layouts = ["us"]
+        variant = ""
+        variants = []
+        try:
+            from xpra.platform.darwin.keyboard_layout import get_keyboard_layout
+            i = get_keyboard_layout()
+            log("get_keyboard_layout()=%s", i)
+            locale = i["locale"]        #ie: "en_GB"
+            parts = locale.split("_")
+            if len(parts)==2:
+                layout = parts[1].lower()
+                layouts = [layout, 'us']
+        except Exception as e:
+            log("get_layout_spec()", exc_info=True)
+            log.error("Error querying keyboard layout:")
+            log.error(" %s", e)
+        return layout, layouts, variant, variants
+
     def get_keymap_modifiers(self):
         """
             Override superclass so we can tell the server

src/xpra/platform/darwin/keyboard_layout.py

@@ -0,0 +1,85 @@
+# coding=utf8
+# @PydevCodeAnalysisIgnore
+# This file is part of Xpra.
+# Copyright (C) 2017 Antoine Martin <[email protected]>
+# Xpra is released under the terms of the GNU GPL v2, or, at your option, any
+# later version. See the file COPYING for details.
+
+# This file is based on this gist:
+# https://gist.github.com/pudquick/cff1ecdc02b4cabe5aa0dc6919d97c6d
+
+
+from Foundation import NSBundle
+import objc
+
+def _get_keyboard_layouts():
+    HIToolbox_bundle = NSBundle.bundleWithIdentifier_("com.apple.HIToolbox")
+    HIT_functions = [
+                     ('TISCreateInputSourceList','@@B'),
+                     ('TISGetInputSourceProperty', '@@@'),
+                    ]
+    
+    HIT_constants = [
+                     ('kTISPropertyInputSourceType', '@'),
+                     ('kTISTypeKeyboardLayout', '@'),
+                     ('kTISTypeKeyboardInputMode', '@'),
+                     ('kTISPropertyLocalizedName', '@'),
+                     ('kTISPropertyBundleID', '@'),
+                     ('kTISPropertyInputModeID', '@'),
+                     ('kTISPropertyInputSourceID', '@'),
+                     ('kTISPropertyLocale', '@'),
+                     ('kTISPropertyKeyLayoutNumber', '@'),
+                     ('kTISPropertyScriptCode', '@'),
+                    ]
+
+    objc.loadBundleFunctions(HIToolbox_bundle, globals(), HIT_functions)
+    # Yes, I know it's amusing that loadBundleVariables is loading constants - ... oh, so it's just me then? k
+    objc.loadBundleVariables(HIToolbox_bundle, globals(), HIT_constants)
+    #silence pydev:
+
+    # get the list of keyboard layouts
+    keyboard_layouts = TISCreateInputSourceList({kTISPropertyInputSourceType: kTISTypeKeyboardLayout}, True)
+    # (
+    #     "<TSMInputSource 0x7ff8e9f2cc00> KB Layout: U.S. (id=0)",
+    #     "<TSMInputSource 0x7ff8e9f2c5f0> KB Layout: Czech - QWERTY (id=30778)",
+    #     "<TSMInputSource 0x7ff8e9f2b8c0> KB Layout: Czech (id=30776)",
+    # [...]
+    print("TISCreateInputSourceList keyboard_layouts=%s", keyboard_layouts)
+    return keyboard_layouts
+
+def _get_keyboard_layout_dict(layout):
+    def getprop(k):
+        return TISGetInputSourceProperty(layout, k)
+    # Can't figure out the constant names for these ones, so we'll make 'em up
+    kTISPropertyKind = u'TSMInputSourcePropertyKind'
+    # <TSMInputSource 0x7ff8e9f2c5f0> KB Layout: Czech - QWERTY (id=30778)
+    kind   = getprop(kTISPropertyKind)
+    # u'TSMInputSourceKindKeyboardLayout'
+    name   = getprop(kTISPropertyLocalizedName)
+    # u'Czech - QWERTY'
+    kid     = getprop(kTISPropertyKeyLayoutNumber)
+    # 30778
+    script = getprop(kTISPropertyScriptCode)
+    # 29
+    sid    = getprop(kTISPropertyInputSourceID)
+    # u'com.apple.keylayout.Czech-QWERTY'
+    locale = getprop(kTISPropertyLocale)
+    # u'cs'
+    return {
+        "kind"      : kind,
+        "name"      : name,
+        "id"        : kid,
+        "script"    : script,
+        "sid"       : sid,
+        "locale"    : locale,
+        }
+
+def get_keyboard_layout():
+    layouts = _get_keyboard_layouts()
+    if not layouts:
+        return {}
+    #assume the first layout is the active one...
+    return _get_keyboard_layout_dict(layouts[0])
+
+def get_keyboard_layouts():
+    return [_get_keyboard_layout_dict(layout) for layout in _get_keyboard_layouts()]