Linux Keybinds

- Adds getKeyboardState into linux_cgo to parse keypress event and transfer it into
  an accelerator for the handleKeyEvent using GDK keycodes

mkdocs-website/docs/en/changelog.md

@@ -23,6 +23,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   click by @5aaee9 in [#2991](https://github.com/wailsapp/wails/pull/2991)
 - [darwin] add getPrimaryScreen/getScreens to impl by @tmclane in
   [#2618](https://github.com/wailsapp/wails/pull/2618)
+- [linux] add onKeyPress logic to convert linux keypress into an accelerator @[Atterpac](https://github.com/Atterpac) in[#3022](https://github.com/wailsapp/wails/pull/3022])
 
 ### Fixed
 

v3/pkg/application/keys_linux.go

@@ -0,0 +1,165 @@
+//go:build linux
+
+package application
+
+var VirtualKeyCodes = map[uint]string{
+	0xff08: "backspace",
+	0xff09: "tab",
+	0xff0a: "linefeed",
+	0xff0b: "clear",
+	0xff0d: "return",
+	0xff13: "pause",
+	0xff14: "scrolllock",
+	0xff15: "sysreq",
+	0xff1b: "escape",
+	0xffff: "delete",
+	0xff50: "home",
+	0xff51: "left",
+	
+	0xffe1: "lshift",
+	0xffe2: "rshift",
+	0xffe3: "lcontrol",
+	0xffe4: "rcontrol",
+	0xffeb: "lmeta",
+	0xffec: "rmeta",
+	0xffed: "lalt",
+	0xffee: "ralt",
+	// Multi-Lang
+	0xff21: "kanji",
+	0xff22: "muhenkan",
+	0xff24: "henkan",
+	0xff25: "hiragana",
+	0xff26: "katakana",
+	0xff27: "hiragana/katakana",
+	0xff28: "zenkaku",
+	0xff29: "hankaku",
+	0xff2a: "zenkaku/hankaku",
+	0xff2b: "touroku",
+	0xff2c: "massyo",
+	0xff2d: "kana lock",
+	0xff2e: "kana shift",
+	0xff2f: "eisu shift",
+	0xff30: "eisu toggle",
+	0xff37: "kanji bangou",
+
+	// Directions
+	0xff52: "up",
+	0xff53: "right",
+	0xff54: "down",
+	0xff55: "pageup",
+	0xff56: "pagedown",
+	0xff57: "end",
+	0xff58: "begin",
+
+
+	// Alphabet
+	0x41: "a",
+	0x42: "b",
+	0x43: "c",
+	0x44: "d",
+	0x45: "e",
+	0x46: "f",
+	0x47: "g",
+	0x48: "h",
+	0x49: "i",
+	0x4a: "j",
+	0x4b: "k",
+	0x4c: "l",
+	0x4d: "m",
+	0x4e: "n",
+	0x4f: "o",
+	0x50: "p",
+	0x51: "q",
+	0x52: "r",
+	0x53: "s",
+	0x54: "t",
+	0x55: "u",
+	0x56: "v",
+	0x57: "w",
+	0x58: "x",
+	0x59: "y",
+	0x5a: "z",
+
+	0x5b: "lbracket",
+	0x5c: "backslash",
+	0x5d: "rbracket",
+	0x5e: "caret",
+	0x5f: "underscore",
+	0x60: "grave",
+	// Capital Alphabet
+	0x61: "a",
+	0x62: "b",
+	0x63: "c",
+	0x64: "d",
+	0x65: "e",
+	0x66: "f",
+	0x67: "g",
+	0x68: "h",
+	0x69: "i",
+	0x6a: "j",
+	0x6b: "k",
+	0x6c: "l",
+	0x6d: "m",
+	0x6e: "n",
+	0x6f: "o",
+	0x70: "p",
+	0x71: "q",
+	0x72: "r",
+	0x73: "s",
+	0x74: "t",
+	0x75: "u",
+	0x76: "v",
+	0x77: "w",
+	0x78: "x",
+	0x79: "y",
+	0x7a: "z",
+	0x7b: "lbrace",
+	0x7c: "pipe",
+	0x7d: "rbrace",
+	0x7e: "tilde",
+	0xa1: "exclam",
+	0xa2: "cent",
+	0xa3: "sterling",
+	0xa4: "currency",
+	0xa5: "yen",
+	0xa6: "brokenbar",
+	0xa7: "section",
+	0xa8: "diaeresis",
+	0xa9: "copyright",
+	0xaa: "ordfeminine",
+	0xab: "guillemotleft",
+	0xad: "hyphen",
+	0xae: "registered",
+	0xaf: "macron",
+	0xb0: "degree",
+	0xb1: "plusminus",
+	0xb2: "twosuperior",
+
+	// Function Keys
+	0xffbe: "f1",
+	0xffbf: "f2",
+	0xffc0: "f3",
+	0xffc1: "f4",
+	0xffc2: "f5",
+	0xffc3: "f6",
+	0xffc4: "f7",
+	0xffc5: "f8",
+	0xffc6: "f9",
+	0xffc7: "f10",
+	0xffc8: "f11",
+	0xffc9: "f12",
+	0xffca: "f13",
+	0xffcb: "f14",
+	0xffcc: "f15",
+	0xffcd: "f16",
+	0xffce: "f17",
+	0xffcf: "f18",
+	0xffd0: "f19",
+	0xffd1: "f20",
+	0xffd2: "f21",
+	0xffd3: "f22",
+	0xffd4: "f23",
+	0xffd5: "f24",
+
+
+}

v3/pkg/application/linux_cgo.go

@@ -1035,17 +1035,45 @@ func onDragNDrop(target unsafe.Pointer, context *C.GdkDragContext, x C.gint, y C
 
 //export onKeyPressEvent
 func onKeyPressEvent(widget *C.GtkWidget, event *C.GdkEventKey, userData unsafe.Pointer) C.gboolean {
-	//	windowId := uint(*((*C.uint)(userData)))
-	//	fmt.Println("onKeyPressEvent", windowId)
-	/*
-		windowKeyEvents <- &windowKeyEvent{
-			windowId:          windowID,
-			acceleratorString: C.GoString(acceleratorString),
-		}
-	*/
+	windowID := uint(*((*C.uint)(userData)))
+	accelerator, ok := getKeyboardState(event)
+	if !ok {
+		return C.gboolean(0)
+	}
+	windowKeyEvents <- &windowKeyEvent{
+		windowId:          windowID,
+		acceleratorString: accelerator,
+	}
 	return C.gboolean(0)
 }
 
+func getKeyboardState(event *C.GdkEventKey) (string, bool) {
+	modifiers := uint(event.state) & C.GDK_MODIFIER_MASK
+	keyCode := uint(event.keyval)
+
+	var acc accelerator
+	// Check Accelerators
+	if modifiers&(C.GDK_SHIFT_MASK) != 0 {
+		acc.Modifiers = append(acc.Modifiers, ShiftKey)
+	}
+	if modifiers&(C.GDK_CONTROL_MASK) != 0 {
+		acc.Modifiers = append(acc.Modifiers, ControlKey)
+	}
+	if modifiers&(C.GDK_MOD1_MASK) != 0 {
+		acc.Modifiers = append(acc.Modifiers, OptionOrAltKey)
+	}
+	if modifiers&(C.GDK_SUPER_MASK) != 0 {
+		acc.Modifiers = append(acc.Modifiers, SuperKey)
+	}
+	keyString, ok := VirtualKeyCodes[keyCode]
+	if !ok {
+		fmt.Println("Error Could not find key code: ", keyCode)
+		return "", false
+	}
+	acc.Key = keyString
+	return acc.String(), true
+}
+
 //export onProcessRequest
 func onProcessRequest(request unsafe.Pointer, data unsafe.Pointer) {
 	windowId := uint(*((*C.uint)(data)))