add Colemak layout

core/bind/core_bind.cpp

@@ -435,6 +435,7 @@ String _OS::get_latin_keyboard_variant() const {
 		case OS::LATIN_KEYBOARD_QZERTY: return "QZERTY";
 		case OS::LATIN_KEYBOARD_DVORAK: return "DVORAK";
 		case OS::LATIN_KEYBOARD_NEO: return "NEO";
+		case OS::LATIN_KEYBOARD_COLEMAK: return "COLEMAK";
 		default: return "ERROR";
 	}
 }

core/os/keyboard.cpp

@@ -507,6 +507,27 @@ static const _KeyCodeReplace _keycode_replace_neo[] = {
 	{ 0, 0 }
 };
 
+static const _KeyCodeReplace _keycode_replace_colemak[] = {
+	{ KEY_E, KEY_F },
+	{ KEY_R, KEY_P },
+	{ KEY_T, KEY_G },
+	{ KEY_Y, KEY_J },
+	{ KEY_U, KEY_L },
+	{ KEY_I, KEY_U },
+	{ KEY_O, KEY_Y },
+	{ KEY_P, KEY_SEMICOLON },
+	{ KEY_S, KEY_R },
+	{ KEY_D, KEY_S },
+	{ KEY_F, KEY_T },
+	{ KEY_G, KEY_D },
+	{ KEY_J, KEY_N },
+	{ KEY_K, KEY_E },
+	{ KEY_L, KEY_I },
+	{ KEY_SEMICOLON, KEY_O },
+	{ KEY_N, KEY_K },
+	{ 0, 0 }
+};
+
 int latin_keyboard_keycode_convert(int p_keycode) {
 
 	const _KeyCodeReplace *kcr = NULL;

core/os/os.h

@@ -405,6 +405,7 @@ public:
 		LATIN_KEYBOARD_QZERTY,
 		LATIN_KEYBOARD_DVORAK,
 		LATIN_KEYBOARD_NEO,
+		LATIN_KEYBOARD_COLEMAK,
 	};
 
 	virtual LatinKeyboardVariant get_latin_keyboard_variant() const;

doc/base/classes.xml

@@ -23422,7 +23422,7 @@
 			</return>
 			<description>
 				Returns the current latin keyboard variant as a String.
-				Possible return values are: "QWERTY", "AZERTY", "QZERTY", "DVORAK", "NEO" or "ERROR"
+				Possible return values are: "QWERTY", "AZERTY", "QZERTY", "DVORAK", "NEO", "COLEMAK" or "ERROR"
 			</description>
 		</method>
 		<method name="get_locale" qualifiers="const">

platform/osx/os_osx.mm

@@ -34,11 +34,11 @@
 #include "main/main.h"
 #include "os/keyboard.h"
 #include "print_string.h"
+#include "scene/resources/texture.h"
 #include "sem_osx.h"
 #include "servers/physics/physics_server_sw.h"
 #include "servers/visual/visual_server_raster.h"
 #include "servers/visual/visual_server_wrap_mt.h"
-#include "scene/resources/texture.h"
 
 #include <Carbon/Carbon.h>
 #import <Cocoa/Cocoa.h>
@@ -502,10 +502,11 @@ static void _mouseDownEvent(NSEvent *event, int index, int mask, bool pressed) {
 	if (OS_OSX::singleton->main_loop && OS_OSX::singleton->mouse_mode != OS::MOUSE_MODE_CAPTURED)
 		OS_OSX::singleton->main_loop->notification(MainLoop::NOTIFICATION_WM_MOUSE_ENTER);
 
-	if (OS_OSX::singleton->input)
+	if (OS_OSX::singleton->input) {
 		OS_OSX::singleton->cursor_shape = OS::CURSOR_MAX;
 		OS_OSX::singleton->set_cursor_shape(OS::CURSOR_ARROW);
 	}
+}
 
 - (void)viewDidChangeBackingProperties {
 	/*
@@ -1816,6 +1817,8 @@ OS::LatinKeyboardVariant OS_OSX::get_latin_keyboard_variant() const {
 			layout = LATIN_KEYBOARD_DVORAK;
 		} else if ([test isEqualToString:@"xvlcwk"]) {
 			layout = LATIN_KEYBOARD_NEO;
+		} else if ([test isEqualToString:@"qwfpgj"]) {
+			layout = LATIN_KEYBOARD_COLEMAK;
 		}
 
 		[test release];

platform/x11/os_x11.cpp

@@ -68,6 +68,8 @@
 
 #undef CursorShape
 
+#include <X11/XKBlib.h>
+
 int OS_X11::get_video_driver_count() const {
 	return 1;
 }
@@ -2201,6 +2203,38 @@ void OS_X11::set_context(int p_context) {
 	}
 }
 
+OS::LatinKeyboardVariant OS_X11::get_latin_keyboard_variant() const {
+
+	XkbDescRec *xkbdesc = XkbAllocKeyboard();
+	ERR_FAIL_COND_V(!xkbdesc, LATIN_KEYBOARD_QWERTY);
+
+	XkbGetNames(x11_display, XkbSymbolsNameMask, xkbdesc);
+	ERR_FAIL_COND_V(!xkbdesc->names, LATIN_KEYBOARD_QWERTY);
+	ERR_FAIL_COND_V(!xkbdesc->names->symbols, LATIN_KEYBOARD_QWERTY);
+
+	char *layout = XGetAtomName(x11_display, xkbdesc->names->symbols);
+	ERR_FAIL_COND_V(!layout, LATIN_KEYBOARD_QWERTY);
+
+	Vector<String> info = String(layout).split("+");
+	ERR_FAIL_INDEX_V(1, info.size(), LATIN_KEYBOARD_QWERTY);
+
+	if (info[1].find("colemak") != -1) {
+		return LATIN_KEYBOARD_COLEMAK;
+	} else if (info[1].find("qwertz") != -1) {
+		return LATIN_KEYBOARD_QWERTZ;
+	} else if (info[1].find("azerty") != -1) {
+		return LATIN_KEYBOARD_AZERTY;
+	} else if (info[1].find("qzerty") != -1) {
+		return LATIN_KEYBOARD_QZERTY;
+	} else if (info[1].find("dvorak") != -1) {
+		return LATIN_KEYBOARD_DVORAK;
+	} else if (info[1].find("neo") != -1) {
+		return LATIN_KEYBOARD_NEO;
+	}
+
+	return LATIN_KEYBOARD_QWERTY;
+}
+
 OS_X11::OS_X11() {
 
 #ifdef RTAUDIO_ENABLED

platform/x11/os_x11.h

@@ -285,6 +285,8 @@ public:
 	void disable_crash_handler();
 	bool is_disable_crash_handler() const;
 
+	virtual LatinKeyboardVariant get_latin_keyboard_variant() const;
+
 	OS_X11();
 };