Move keybinding settings to (Lua-based) setting menu (#15791)

src/gui/guiButtonKey.cpp

@@ -0,0 +1,141 @@
+// Luanti
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
+#include "guiButtonKey.h"
+using namespace irr::gui;
+
+GUIButtonKey *GUIButtonKey::addButton(IGUIEnvironment *environment,
+		const core::rect<s32> &rectangle, ISimpleTextureSource *tsrc,
+		IGUIElement *parent, s32 id, const wchar_t *text,
+		const wchar_t *tooltiptext)
+{
+	auto button = make_irr<GUIButtonKey>(environment,
+			parent ? parent : environment->getRootGUIElement(), id, rectangle, tsrc);
+
+	if (text)
+		button->setText(text);
+
+	if (tooltiptext)
+		button->setToolTipText(tooltiptext);
+
+	return button.get();
+}
+
+void GUIButtonKey::setKey(KeyPress kp)
+{
+	key_value = kp;
+	keysym = utf8_to_wide(kp.sym());
+	super::setText(wstrgettext(kp.name()).c_str());
+}
+
+void GUIButtonKey::sendKey()
+{
+	if (Parent) {
+		SEvent e;
+		e.EventType = EET_GUI_EVENT;
+		e.GUIEvent.Caller = this;
+		e.GUIEvent.Element = nullptr;
+		e.GUIEvent.EventType = EGET_BUTTON_CLICKED;
+		Parent->OnEvent(e);
+	}
+}
+
+bool GUIButtonKey::OnEvent(const SEvent & event)
+{
+	switch(event.EventType)
+	{
+	case EET_KEY_INPUT_EVENT:
+		if (!event.KeyInput.PressedDown) {
+			bool wasPressed = isPressed();
+			setPressed(false);
+			if (capturing) {
+				cancelCapture();
+				if (event.KeyInput.Key != KEY_ESCAPE)
+					sendKey();
+				return true;
+			} else if (wasPressed && (event.KeyInput.Key == KEY_RETURN || event.KeyInput.Key == KEY_SPACE)) {
+				startCapture();
+				return true;
+			}
+			break;
+		} else if (capturing) {
+			if (event.KeyInput.Key != KEY_ESCAPE) {
+				setPressed(true);
+				setKey(KeyPress(event.KeyInput));
+			}
+			return true;
+		} else if (event.KeyInput.Key == KEY_RETURN || event.KeyInput.Key == KEY_SPACE) {
+			setPressed(true);
+			return true;
+		}
+		break;
+	case EET_MOUSE_INPUT_EVENT: {
+		auto in_rect = AbsoluteClippingRect.isPointInside(
+				core::position2d<s32>(event.MouseInput.X, event.MouseInput.Y));
+		switch (event.MouseInput.Event)
+		{
+		case EMIE_LMOUSE_LEFT_UP:
+			if (!capturing && in_rect) {
+				setPressed(false);
+				startCapture();
+				return true;
+			}
+			[[fallthrough]];
+		case EMIE_MMOUSE_LEFT_UP: [[fallthrough]];
+		case EMIE_RMOUSE_LEFT_UP:
+			setPressed(false);
+			if (capturing) {
+				cancelCapture();
+				sendKey();
+				return true;
+			}
+			break;
+		case EMIE_LMOUSE_PRESSED_DOWN:
+			if (capturing) {
+				if (event.MouseInput.Simulated) {
+					cancelCapture(true);
+					if (in_rect)
+						return true;
+				} else {
+					setPressed(true);
+					setKey(LMBKey);
+					return true;
+				}
+			} else if (in_rect) {
+				Environment->setFocus(this);
+				setPressed(true);
+				return true;
+			}
+			break;
+		case EMIE_MMOUSE_PRESSED_DOWN:
+			if (capturing) {
+				setPressed(true);
+				setKey(MMBKey);
+				return true;
+			}
+			break;
+		case EMIE_RMOUSE_PRESSED_DOWN:
+			if (capturing) {
+				setPressed(true);
+				setKey(RMBKey);
+				return true;
+			}
+			break;
+		default:
+			break;
+		}
+		break;
+	}
+	case EET_GUI_EVENT:
+		if (event.GUIEvent.EventType == EGET_ELEMENT_FOCUS_LOST) {
+			if (capturing)
+				return true;
+			else
+				nostart = false; // lift nostart restriction if "mouse" (finger) is released outside the button
+		}
+	default:
+		break;
+	}
+
+	return Parent ? Parent->OnEvent(event) : false;
+}