Move input handling into the Terminal node

CHANGELOG.md

@@ -11,3 +11,4 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 - Implementation of Terminal node from GDScript to GDNative using [Aetf's patched version of libtsm](https://github.com/Aetf/libtsm).
+- Move input handling to the Terminal node itself, rather than handling it in a seperate Control node.

addons/godot_xterm/native/SConstruct

@@ -99,7 +99,7 @@ else:
 cpp_library += '.' + str(bits)
 
 # make sure our binding library is properly includes
-env.Append(CPPPATH=['.', godot_headers_path, cpp_bindings_path + 'include/', cpp_bindings_path + 'include/core/', cpp_bindings_path + 'include/gen/', libtsm_path + 'src/tsm'])
+env.Append(CPPPATH=['.', godot_headers_path, cpp_bindings_path + 'include/', cpp_bindings_path + 'include/core/', cpp_bindings_path + 'include/gen/', libtsm_path + 'src/tsm', libtsm_path + 'external'])
 env.Append(LIBPATH=[cpp_bindings_path + 'bin/', libtsm_path + 'build/src/tsm'])
 env.Append(LIBS=[cpp_library, 'tsm', 'util']) # Note util used by pseudoterminal, tsm used by terminal.
 

addons/godot_xterm/native/src/terminal.cpp

@@ -1,6 +1,10 @@
 #include "terminal.h"
 #include <algorithm>
+#include <GlobalConstants.hpp>
+#include <InputEventKey.hpp>
+#include <OS.hpp>
 #include <Theme.hpp>
+#include <xkbcommon/xkbcommon-keysyms.h>
 
 using namespace godot;
 
@@ -27,6 +31,170 @@ const uint8_t Terminal::default_color_palette[TSM_COLOR_NUM][3] = {
 	[TSM_COLOR_BACKGROUND] = {0x00, 0x00, 0x00},
 };
 
+const std::map<std::pair<int64_t, int64_t>, uint32_t> Terminal::keymap = {
+
+	// Godot does not have seperate scancodes for keypad keys when NumLock is off.
+	// We can check the unicode value to determine whether it is off and set the
+	// appropriate scancode.
+	// Based on the patch which adds support for this to TextEdit/LineEdit:
+	// https://github.com/godotengine/godot/pull/3269/files
+	{{'0', GlobalConstants::KEY_KP_0}, XKB_KEY_KP_0},
+	{{0b0, GlobalConstants::KEY_KP_0}, XKB_KEY_KP_Insert},
+	{{'1', GlobalConstants::KEY_KP_1}, XKB_KEY_KP_1},
+	{{0b0, GlobalConstants::KEY_KP_1}, XKB_KEY_KP_End},
+	{{'2', GlobalConstants::KEY_KP_2}, XKB_KEY_KP_2},
+	{{0b0, GlobalConstants::KEY_KP_2}, XKB_KEY_KP_Down},
+	{{'3', GlobalConstants::KEY_KP_3}, XKB_KEY_KP_3},
+	{{0b0, GlobalConstants::KEY_KP_3}, XKB_KEY_KP_Page_Down},
+	{{'4', GlobalConstants::KEY_KP_4}, XKB_KEY_KP_4},
+	{{0b0, GlobalConstants::KEY_KP_4}, XKB_KEY_KP_Left},
+	{{'5', GlobalConstants::KEY_KP_5}, XKB_KEY_KP_5},
+	{{0b0, GlobalConstants::KEY_KP_5}, XKB_KEY_KP_Begin},
+	{{'6', GlobalConstants::KEY_KP_6}, XKB_KEY_KP_6},
+	{{0b0, GlobalConstants::KEY_KP_6}, XKB_KEY_KP_Right},
+	{{'7', GlobalConstants::KEY_KP_7}, XKB_KEY_KP_7},
+	{{0b0, GlobalConstants::KEY_KP_7}, XKB_KEY_KP_Home},
+	{{'8', GlobalConstants::KEY_KP_8}, XKB_KEY_KP_8},
+	{{0b0, GlobalConstants::KEY_KP_8}, XKB_KEY_KP_Up},
+	{{'9', GlobalConstants::KEY_KP_9}, XKB_KEY_KP_9},
+	{{0b0, GlobalConstants::KEY_KP_9}, XKB_KEY_KP_Page_Up},
+	{{'.', GlobalConstants::KEY_KP_PERIOD}, XKB_KEY_KP_Decimal},
+	{{0b0, GlobalConstants::KEY_KP_PERIOD}, XKB_KEY_KP_Delete},
+	{{'/', GlobalConstants::KEY_KP_DIVIDE}, XKB_KEY_KP_Divide},
+	{{'*', GlobalConstants::KEY_KP_MULTIPLY}, XKB_KEY_KP_Multiply},
+	{{'-', GlobalConstants::KEY_KP_SUBTRACT}, XKB_KEY_KP_Subtract},
+	{{'+', GlobalConstants::KEY_KP_ADD}, XKB_KEY_KP_Add},
+	{{0b0, GlobalConstants::KEY_KP_ENTER}, XKB_KEY_KP_Enter},
+	//{{ , }, XKB_KEY_KP_Equal},
+	//{{ , }, XKB_KEY_KP_Separator},
+	//{{ , }, XKB_KEY_KP_Tab},
+	//{{ , }, XKB_KEY_KP_F1},
+	//{{ , }, XKB_KEY_KP_F2},
+	//{{ , }, XKB_KEY_KP_F3},
+	//{{ , }, XKB_KEY_KP_F4},
+
+	// Godot scancodes do not distinguish between uppercase and lowercase
+	// letters, so we can check the unicode value to determine this.
+	{{'a', GlobalConstants::KEY_A}, XKB_KEY_a},
+	{{'A', GlobalConstants::KEY_A}, XKB_KEY_A},
+	{{'b', GlobalConstants::KEY_B}, XKB_KEY_b},
+	{{'B', GlobalConstants::KEY_B}, XKB_KEY_B},
+	{{'c', GlobalConstants::KEY_C}, XKB_KEY_c},
+	{{'C', GlobalConstants::KEY_C}, XKB_KEY_C},
+	{{'d', GlobalConstants::KEY_D}, XKB_KEY_d},
+	{{'D', GlobalConstants::KEY_D}, XKB_KEY_D},
+	{{'e', GlobalConstants::KEY_E}, XKB_KEY_e},
+	{{'E', GlobalConstants::KEY_E}, XKB_KEY_E},
+	{{'f', GlobalConstants::KEY_F}, XKB_KEY_f},
+	{{'F', GlobalConstants::KEY_F}, XKB_KEY_F},
+	{{'g', GlobalConstants::KEY_G}, XKB_KEY_g},
+	{{'G', GlobalConstants::KEY_G}, XKB_KEY_G},
+	{{'h', GlobalConstants::KEY_H}, XKB_KEY_h},
+	{{'H', GlobalConstants::KEY_H}, XKB_KEY_H},
+	{{'i', GlobalConstants::KEY_I}, XKB_KEY_i},
+	{{'I', GlobalConstants::KEY_I}, XKB_KEY_I},
+	{{'j', GlobalConstants::KEY_J}, XKB_KEY_j},
+	{{'J', GlobalConstants::KEY_J}, XKB_KEY_J},
+	{{'k', GlobalConstants::KEY_K}, XKB_KEY_k},
+	{{'K', GlobalConstants::KEY_K}, XKB_KEY_K},
+	{{'l', GlobalConstants::KEY_L}, XKB_KEY_l},
+	{{'L', GlobalConstants::KEY_L}, XKB_KEY_L},
+	{{'m', GlobalConstants::KEY_M}, XKB_KEY_m},
+	{{'M', GlobalConstants::KEY_M}, XKB_KEY_M},
+	{{'n', GlobalConstants::KEY_N}, XKB_KEY_n},
+	{{'N', GlobalConstants::KEY_N}, XKB_KEY_N},
+	{{'o', GlobalConstants::KEY_O}, XKB_KEY_o},
+	{{'O', GlobalConstants::KEY_O}, XKB_KEY_O},
+	{{'p', GlobalConstants::KEY_P}, XKB_KEY_p},
+	{{'P', GlobalConstants::KEY_P}, XKB_KEY_P},
+	{{'q', GlobalConstants::KEY_Q}, XKB_KEY_q},
+	{{'Q', GlobalConstants::KEY_Q}, XKB_KEY_Q},
+	{{'r', GlobalConstants::KEY_R}, XKB_KEY_r},
+	{{'R', GlobalConstants::KEY_R}, XKB_KEY_R},
+	{{'s', GlobalConstants::KEY_S}, XKB_KEY_s},
+	{{'S', GlobalConstants::KEY_S}, XKB_KEY_S},
+	{{'t', GlobalConstants::KEY_T}, XKB_KEY_t},
+	{{'T', GlobalConstants::KEY_T}, XKB_KEY_T},
+	{{'u', GlobalConstants::KEY_U}, XKB_KEY_u},
+	{{'U', GlobalConstants::KEY_U}, XKB_KEY_U},
+	{{'v', GlobalConstants::KEY_V}, XKB_KEY_v},
+	{{'V', GlobalConstants::KEY_V}, XKB_KEY_V},
+	{{'w', GlobalConstants::KEY_W}, XKB_KEY_w},
+	{{'W', GlobalConstants::KEY_W}, XKB_KEY_W},
+	{{'x', GlobalConstants::KEY_X}, XKB_KEY_x},
+	{{'X', GlobalConstants::KEY_X}, XKB_KEY_X},
+	{{'y', GlobalConstants::KEY_Y}, XKB_KEY_y},
+	{{'Y', GlobalConstants::KEY_Y}, XKB_KEY_Y},
+	{{'z', GlobalConstants::KEY_Z}, XKB_KEY_z},
+	{{'Z', GlobalConstants::KEY_Z}, XKB_KEY_Z},
+
+	{{'0', GlobalConstants::KEY_0}, XKB_KEY_0},
+	{{'1', GlobalConstants::KEY_1}, XKB_KEY_1},
+	{{'2', GlobalConstants::KEY_2}, XKB_KEY_2},
+	{{'3', GlobalConstants::KEY_3}, XKB_KEY_3},
+	{{'4', GlobalConstants::KEY_4}, XKB_KEY_4},
+	{{'5', GlobalConstants::KEY_5}, XKB_KEY_5},
+	{{'6', GlobalConstants::KEY_6}, XKB_KEY_6},
+	{{'7', GlobalConstants::KEY_7}, XKB_KEY_7},
+	{{'8', GlobalConstants::KEY_8}, XKB_KEY_8},
+	{{'9', GlobalConstants::KEY_9}, XKB_KEY_9},
+
+	{{'[', GlobalConstants::KEY_BRACKETLEFT}, XKB_KEY_bracketleft},
+	{{'[', GlobalConstants::KEY_BRACKETLEFT}, XKB_KEY_bracketright},
+	{{'{', GlobalConstants::KEY_BRACELEFT}, XKB_KEY_braceleft},
+	{{'}', GlobalConstants::KEY_BRACERIGHT}, XKB_KEY_braceright},
+
+	{{'\\', GlobalConstants::KEY_BACKSLASH}, XKB_KEY_backslash},
+	{{'|', GlobalConstants::KEY_BAR}, XKB_KEY_bar},
+	{{'`', GlobalConstants::KEY_QUOTELEFT}, XKB_KEY_grave},
+	{{'~', GlobalConstants::KEY_ASCIITILDE}, XKB_KEY_asciitilde},
+	{{'/', GlobalConstants::KEY_SLASH}, XKB_KEY_slash},
+	{{'?', GlobalConstants::KEY_QUESTION}, XKB_KEY_question},
+
+	{{0, GlobalConstants::KEY_HOME}, XKB_KEY_Home},
+	{{0, GlobalConstants::KEY_BACKSPACE}, XKB_KEY_BackSpace},
+	{{0, GlobalConstants::KEY_BACKTAB}, XKB_KEY_ISO_Left_Tab},
+	{{0, GlobalConstants::KEY_CLEAR}, XKB_KEY_Clear},
+	{{0, GlobalConstants::KEY_PAUSE}, XKB_KEY_Pause},
+	{{0, GlobalConstants::KEY_SCROLLLOCK}, XKB_KEY_Scroll_Lock},
+	{{0, GlobalConstants::KEY_SYSREQ}, XKB_KEY_Sys_Req},
+	{{0, GlobalConstants::KEY_ESCAPE}, XKB_KEY_Escape},
+	{{0, GlobalConstants::KEY_ENTER}, XKB_KEY_Return},
+	{{0, GlobalConstants::KEY_INSERT}, XKB_KEY_Insert},
+	{{0, GlobalConstants::KEY_DELETE}, XKB_KEY_Delete},
+	{{0, GlobalConstants::KEY_PAGEUP}, XKB_KEY_Page_Up},
+	{{0, GlobalConstants::KEY_PAGEDOWN}, XKB_KEY_Page_Down},
+	{{0, GlobalConstants::KEY_UP}, XKB_KEY_Up},
+	{{0, GlobalConstants::KEY_DOWN}, XKB_KEY_Down},
+	{{0, GlobalConstants::KEY_RIGHT}, XKB_KEY_Right},
+	{{0, GlobalConstants::KEY_LEFT}, XKB_KEY_Left},
+	{{0, GlobalConstants::KEY_TAB}, XKB_KEY_Tab},
+	//{{ , }, XKB_KEY_Linefeed},
+	//{{ , }, XKB_KEY_Find},
+	//{{ , }, XKB_KEY_Select},
+
+	{{0, GlobalConstants::KEY_F1}, XKB_KEY_F1},
+	{{0, GlobalConstants::KEY_F2}, XKB_KEY_F2},
+	{{0, GlobalConstants::KEY_F3}, XKB_KEY_F3},
+	{{0, GlobalConstants::KEY_F4}, XKB_KEY_F4},
+	{{0, GlobalConstants::KEY_F5}, XKB_KEY_F5},
+	{{0, GlobalConstants::KEY_F6}, XKB_KEY_F6},
+	{{0, GlobalConstants::KEY_F7}, XKB_KEY_F7},
+	{{0, GlobalConstants::KEY_F8}, XKB_KEY_F8},
+	{{0, GlobalConstants::KEY_F9}, XKB_KEY_F9},
+	{{0, GlobalConstants::KEY_F10}, XKB_KEY_F10},
+	{{0, GlobalConstants::KEY_F11}, XKB_KEY_F11},
+	{{0, GlobalConstants::KEY_F12}, XKB_KEY_F12},
+	{{0, GlobalConstants::KEY_F13}, XKB_KEY_F13},
+	{{0, GlobalConstants::KEY_F14}, XKB_KEY_F14},
+	{{0, GlobalConstants::KEY_F15}, XKB_KEY_F15},
+	{{0, GlobalConstants::KEY_F16}, XKB_KEY_F16},
+	//{{0, GlobalConstants::KEY_F17}, XKB_KEY_F17},
+	//{{0, GlobalConstants::KEY_F18}, XKB_KEY_F18},
+	//{{0, GlobalConstants::KEY_F19}, XKB_KEY_F19},
+	//{{0, GlobalConstants::KEY_F20}, XKB_KEY_F20},
+};
+
 static struct
 {
 	Color col;
@@ -41,6 +209,13 @@ static void write_cb(struct tsm_vte *vte, const char *u8, size_t len, void *data
 {
 
 	Terminal *term = static_cast<Terminal *>(data);
+
+	PoolByteArray bytes = PoolByteArray();
+
+	for (int i = 0; i < len; i++)
+		bytes.append(u8[i]);
+
+	term->emit_signal("data_read", bytes);
 }
 
 static int text_draw_cb(struct tsm_screen *con,
@@ -86,7 +261,7 @@ void Terminal::_register_methods()
 
 	register_method("_init", &Terminal::_init);
 	register_method("_ready", &Terminal::_ready);
-	register_method("_input", &Terminal::_input);
+	register_method("_gui_input", &Terminal::_gui_input);
 	register_method("_draw", &Terminal::_draw);
 
 	register_method("write", &Terminal::write);
@@ -94,6 +269,8 @@ void Terminal::_register_methods()
 
 	//register_property<Terminal, int>("rows", &Terminal::rows, 24);
 	//register_property<Terminal, int>("cols", &Terminal::cols, 80);
+
+	register_signal<Terminal>("data_read", "data", GODOT_VARIANT_TYPE_POOL_BYTE_ARRAY);
 }
 
 Terminal::Terminal()
@@ -148,8 +325,34 @@ void Terminal::_notification(int what)
 	}
 }
 
-void Terminal::_input(Variant event)
+void Terminal::_gui_input(Variant event)
 {
+	Ref<InputEventKey> k = event;
+
+	if (k.is_valid())
+	{
+		if (!k->is_pressed())
+		{
+			return;
+		}
+
+		int64_t scancode = k->get_scancode();
+		int64_t unicode = k->get_unicode();
+		uint32_t ascii = unicode <= 127 ? unicode : 0;
+
+		unsigned int mods = 0;
+		if (k->get_alt())
+			mods |= TSM_ALT_MASK;
+		if (k->get_control())
+			mods |= TSM_CONTROL_MASK;
+		if (k->get_shift())
+			mods |= TSM_SHIFT_MASK;
+
+		auto iter = keymap.find({unicode, scancode});
+		uint32_t keysym = (iter != keymap.end() ? iter->second : XKB_KEY_NoSymbol);
+
+		tsm_vte_handle_keyboard(vte, keysym, ascii, mods, unicode ? unicode : TSM_VTE_INVALID);
+	}
 }
 
 void Terminal::_draw()

addons/godot_xterm/native/src/terminal.h

@@ -34,6 +34,7 @@ namespace godot
 
 	private:
 		static const uint8_t default_color_palette[TSM_COLOR_NUM][3];
+		static const std::map<std::pair<int64_t, int64_t>, uint32_t> keymap;
 
 		Vector2 cell_size;
 		std::map<int, Color> palette = {};
@@ -54,7 +55,7 @@ namespace godot
 		void _init();
 		void _ready();
 		void _notification(int what);
-		void _input(Variant event);
+		void _gui_input(Variant event);
 		void _draw();
 
 		void write(PoolByteArray bytes);

examples/terminal/Terminal.tscn

@@ -1,23 +1,22 @@
-[gd_scene load_steps=5 format=2]
+[gd_scene load_steps=4 format=2]
 
 [ext_resource path="res://addons/godot_xterm/nodes/terminal/terminal.gdns" type="Script" id=1]
-[ext_resource path="res://addons/godot_xterm/themes/default.theme" type="Theme" id=2]
+[ext_resource path="res://addons/godot_xterm/nodes/pseudoterminal/pseudoterminal.gdns" type="Script" id=2]
-[ext_resource path="res://addons/godot_xterm/nodes/pseudoterminal/pseudoterminal.gdns" type="Script" id=3]
+[ext_resource path="res://addons/godot_xterm/themes/default.theme" type="Theme" id=4]
-[ext_resource path="res://examples/terminal/container.gd" type="Script" id=4]
 
-[node name="Container" type="Container"]
+[node name="Terminal" type="Control"]
-margin_right = 40.0
+anchor_right = 1.0
-margin_bottom = 40.0
+anchor_bottom = 1.0
-script = ExtResource( 4 )
+focus_mode = 2
+size_flags_horizontal = 3
+size_flags_vertical = 3
+theme = ExtResource( 4 )
+script = ExtResource( 1 )
 __meta__ = {
 "_edit_use_anchors_": false
 }
 
-[node name="Terminal" type="Control" parent="."]
-margin_right = 40.0
-margin_bottom = 40.0
-theme = ExtResource( 2 )
-script = ExtResource( 1 )
-
 [node name="Pseudoterminal" type="Node" parent="."]
-script = ExtResource( 3 )
+script = ExtResource( 2 )
+[connection signal="data_read" from="." to="Pseudoterminal" method="put_data"]
+[connection signal="data_received" from="Pseudoterminal" to="." method="write"]

examples/terminal/container.gd

@@ -1,55 +0,0 @@
-extends Container
-# This Container ensures that the terminal always fills
-# the window and/or screen. It also connects the terminal
-# to the input/output of the Psuedoterminal.
-
-const ESCAPE = 27
-const BACKSPACE = 8
-const BEEP = 7 
-const SPACE = 32
-const LEFT_BRACKET = 91
-const ENTER = 10
-const BACKSPACE_ALT = 127
-
-onready var viewport = get_viewport()
-
-func _ready():
-	$Pseudoterminal.connect("data_received", $Terminal, "write")
-	
-	viewport.connect("size_changed", self, "_resize")
-	_resize()
-
-
-func _input(event):
-	#return
-	if event is InputEventKey and event.pressed:
-		var data = PoolByteArray([])
-		accept_event()
-		
-		# TODO: Handle more of these.
-		if (event.control and event.scancode == KEY_C):
-			data.append(3)
-		elif event.unicode:
-			data.append(event.unicode)
-		elif event.scancode == KEY_ENTER:
-			data.append(ENTER)
-		elif event.scancode == KEY_BACKSPACE:
-			data.append(BACKSPACE_ALT)
-		elif event.scancode == KEY_ESCAPE:
-			data.append(27)
-		elif event.scancode == KEY_TAB:
-			data.append(9)
-		elif OS.get_scancode_string(event.scancode) == "Shift":
-			pass
-		elif OS.get_scancode_string(event.scancode) == "Control":
-			pass
-		else:
-			pass
-			#push_warning('Unhandled input. scancode: ' + str(OS.get_scancode_string(event.scancode)))
-		#emit_signal("output", data)
-		$Pseudoterminal.put_data(data)
-
-
-func _resize():
-	rect_size = viewport.size
-	$Terminal.rect_size = rect_size