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	This provides parity with the `InputEventMouseButton` allowing for proper conversion between the two events.
		
			
				
	
	
		
			381 lines
		
	
	
	
		
			12 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			381 lines
		
	
	
	
		
			12 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/*************************************************************************/
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/*  android_input_handler.cpp                                            */
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/*************************************************************************/
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/*                       This file is part of:                           */
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/*                           GODOT ENGINE                                */
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/*                      https://godotengine.org                          */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
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/*                                                                       */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the       */
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/* "Software"), to deal in the Software without restriction, including   */
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/* without limitation the rights to use, copy, modify, merge, publish,   */
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/* distribute, sublicense, and/or sell copies of the Software, and to    */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions:                                             */
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/*                                                                       */
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/* The above copyright notice and this permission notice shall be        */
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/* included in all copies or substantial portions of the Software.       */
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/*                                                                       */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
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/*************************************************************************/
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#include "android_input_handler.h"
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#include "android_keys_utils.h"
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#include "core/os/os.h"
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void AndroidInputHandler::process_joy_event(const JoypadEvent &p_event) {
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	switch (p_event.type) {
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		case JOY_EVENT_BUTTON:
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			input->joy_button(p_event.device, p_event.index, p_event.pressed);
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			break;
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		case JOY_EVENT_AXIS:
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			input->joy_axis(p_event.device, p_event.index, p_event.value);
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			break;
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		case JOY_EVENT_HAT:
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			input->joy_hat(p_event.device, p_event.hat);
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			break;
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		default:
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			return;
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	}
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}
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void AndroidInputHandler::_set_key_modifier_state(Ref<InputEventWithModifiers> ev) const {
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	ev->set_shift(shift_mem);
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	ev->set_alt(alt_mem);
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	ev->set_metakey(meta_mem);
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	ev->set_control(control_mem);
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}
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void AndroidInputHandler::process_key_event(int p_scancode, int p_physical_scancode, int p_unicode, bool p_pressed) {
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	Ref<InputEventKey> ev;
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	ev.instance();
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	unsigned int physical_scancode = godot_code_from_android_code(p_physical_scancode);
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	unsigned int scancode = physical_scancode;
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	if (p_scancode != 0) {
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		scancode = godot_code_from_unicode(p_scancode);
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	}
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	switch (physical_scancode) {
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		case KEY_SHIFT: {
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			shift_mem = p_pressed;
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		} break;
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		case KEY_ALT: {
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			alt_mem = p_pressed;
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		} break;
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		case KEY_CONTROL: {
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			control_mem = p_pressed;
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		} break;
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		case KEY_META: {
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			meta_mem = p_pressed;
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		} break;
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		default:
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			break;
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	}
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	ev->set_scancode(scancode);
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	ev->set_physical_scancode(physical_scancode);
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	ev->set_unicode(p_unicode);
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	ev->set_pressed(p_pressed);
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	_set_key_modifier_state(ev);
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	if (p_physical_scancode == AKEYCODE_BACK) {
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		if (MainLoop *main_loop = OS::get_singleton()->get_main_loop()) {
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			main_loop->call_deferred("notification", MainLoop::NOTIFICATION_WM_GO_BACK_REQUEST);
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		}
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	}
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	input->parse_input_event(ev);
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}
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void AndroidInputHandler::_parse_all_touch(bool p_pressed, bool p_double_tap) {
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	if (touch.size()) {
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		//end all if exist
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		for (int i = 0; i < touch.size(); i++) {
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			Ref<InputEventScreenTouch> ev;
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			ev.instance();
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			ev->set_index(touch[i].id);
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			ev->set_pressed(p_pressed);
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			ev->set_position(touch[i].pos);
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			ev->set_double_tap(p_double_tap);
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			input->parse_input_event(ev);
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		}
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	}
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}
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void AndroidInputHandler::_release_all_touch() {
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	_parse_all_touch(false, false);
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	touch.clear();
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}
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void AndroidInputHandler::process_touch_event(int p_event, int p_pointer, const Vector<TouchPos> &p_points, bool p_double_tap) {
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	switch (p_event) {
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		case AMOTION_EVENT_ACTION_DOWN: { //gesture begin
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			// Release any remaining touches or mouse event
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			_release_mouse_event_info();
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			_release_all_touch();
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			touch.resize(p_points.size());
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			for (int i = 0; i < p_points.size(); i++) {
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				touch.write[i].id = p_points[i].id;
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				touch.write[i].pos = p_points[i].pos;
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			}
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			//send touch
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			_parse_all_touch(true, p_double_tap);
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		} break;
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		case AMOTION_EVENT_ACTION_MOVE: { //motion
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			if (touch.size() != p_points.size()) {
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				return;
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			}
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			for (int i = 0; i < touch.size(); i++) {
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				int idx = -1;
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				for (int j = 0; j < p_points.size(); j++) {
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					if (touch[i].id == p_points[j].id) {
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						idx = j;
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						break;
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					}
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				}
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				ERR_CONTINUE(idx == -1);
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				if (touch[i].pos == p_points[idx].pos) {
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					continue; //no move unncesearily
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				}
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				Ref<InputEventScreenDrag> ev;
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				ev.instance();
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				ev->set_index(touch[i].id);
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				ev->set_position(p_points[idx].pos);
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				ev->set_relative(p_points[idx].pos - touch[i].pos);
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				input->parse_input_event(ev);
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				touch.write[i].pos = p_points[idx].pos;
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			}
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		} break;
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		case AMOTION_EVENT_ACTION_CANCEL:
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		case AMOTION_EVENT_ACTION_UP: { //release
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			_release_all_touch();
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		} break;
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		case AMOTION_EVENT_ACTION_POINTER_DOWN: { // add touch
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			for (int i = 0; i < p_points.size(); i++) {
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				if (p_points[i].id == p_pointer) {
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					TouchPos tp = p_points[i];
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					touch.push_back(tp);
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					Ref<InputEventScreenTouch> ev;
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					ev.instance();
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					ev->set_index(tp.id);
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					ev->set_pressed(true);
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					ev->set_position(tp.pos);
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					input->parse_input_event(ev);
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					break;
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				}
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			}
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		} break;
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		case AMOTION_EVENT_ACTION_POINTER_UP: { // remove touch
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			for (int i = 0; i < touch.size(); i++) {
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				if (touch[i].id == p_pointer) {
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					Ref<InputEventScreenTouch> ev;
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					ev.instance();
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					ev->set_index(touch[i].id);
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					ev->set_pressed(false);
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					ev->set_position(touch[i].pos);
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					input->parse_input_event(ev);
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					touch.remove(i);
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					break;
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				}
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			}
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		} break;
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	}
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}
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void AndroidInputHandler::_parse_mouse_event_info(int buttons_mask, bool p_pressed, bool p_double_click) {
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	if (!mouse_event_info.valid) {
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		return;
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	}
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	Ref<InputEventMouseButton> ev;
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	ev.instance();
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	_set_key_modifier_state(ev);
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	ev->set_position(mouse_event_info.pos);
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	ev->set_global_position(mouse_event_info.pos);
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	ev->set_pressed(p_pressed);
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	int changed_button_mask = buttons_state ^ buttons_mask;
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	buttons_state = buttons_mask;
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	ev->set_button_index(_button_index_from_mask(changed_button_mask));
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	ev->set_button_mask(buttons_mask);
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	ev->set_doubleclick(p_double_click);
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	input->parse_input_event(ev);
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	hover_prev_pos = mouse_event_info.pos;
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}
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void AndroidInputHandler::_release_mouse_event_info() {
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	_parse_mouse_event_info(0, false, false);
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	mouse_event_info.valid = false;
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}
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void AndroidInputHandler::process_mouse_event(int p_event_action, int p_event_android_buttons_mask, Point2 p_event_pos, Vector2 p_delta, bool p_double_click) {
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	int event_buttons_mask = _android_button_mask_to_godot_button_mask(p_event_android_buttons_mask);
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	switch (p_event_action) {
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		case AMOTION_EVENT_ACTION_HOVER_MOVE: // hover move
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		case AMOTION_EVENT_ACTION_HOVER_ENTER: // hover enter
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		case AMOTION_EVENT_ACTION_HOVER_EXIT: { // hover exit
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			// https://developer.android.com/reference/android/view/MotionEvent.html#ACTION_HOVER_ENTER
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			Ref<InputEventMouseMotion> ev;
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			ev.instance();
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			_set_key_modifier_state(ev);
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			ev->set_position(p_event_pos);
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			ev->set_global_position(p_event_pos);
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			ev->set_relative(p_event_pos - hover_prev_pos);
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			input->parse_input_event(ev);
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			hover_prev_pos = p_event_pos;
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		} break;
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		case AMOTION_EVENT_ACTION_DOWN:
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		case AMOTION_EVENT_ACTION_BUTTON_PRESS: {
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			// Release any remaining touches or mouse event
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			_release_mouse_event_info();
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			_release_all_touch();
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			mouse_event_info.valid = true;
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			mouse_event_info.pos = p_event_pos;
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			_parse_mouse_event_info(event_buttons_mask, true, p_double_click);
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		} break;
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		case AMOTION_EVENT_ACTION_UP:
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		case AMOTION_EVENT_ACTION_CANCEL:
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		case AMOTION_EVENT_ACTION_BUTTON_RELEASE: {
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			_release_mouse_event_info();
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		} break;
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		case AMOTION_EVENT_ACTION_MOVE: {
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			if (!mouse_event_info.valid) {
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				return;
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			}
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			Ref<InputEventMouseMotion> ev;
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			ev.instance();
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			_set_key_modifier_state(ev);
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			ev->set_position(p_event_pos);
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			ev->set_global_position(p_event_pos);
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			ev->set_relative(p_event_pos - hover_prev_pos);
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			ev->set_button_mask(event_buttons_mask);
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			input->parse_input_event(ev);
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			mouse_event_info.pos = p_event_pos;
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			hover_prev_pos = p_event_pos;
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		} break;
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		case AMOTION_EVENT_ACTION_SCROLL: {
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			Ref<InputEventMouseButton> ev;
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			ev.instance();
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			_set_key_modifier_state(ev);
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			ev->set_position(p_event_pos);
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			ev->set_global_position(p_event_pos);
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			ev->set_pressed(true);
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			buttons_state = event_buttons_mask;
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			if (p_delta.y > 0) {
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				_wheel_button_click(event_buttons_mask, ev, BUTTON_WHEEL_UP, p_delta.y);
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			} else if (p_delta.y < 0) {
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				_wheel_button_click(event_buttons_mask, ev, BUTTON_WHEEL_DOWN, -p_delta.y);
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			}
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			if (p_delta.x > 0) {
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				_wheel_button_click(event_buttons_mask, ev, BUTTON_WHEEL_RIGHT, p_delta.x);
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			} else if (p_delta.x < 0) {
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				_wheel_button_click(event_buttons_mask, ev, BUTTON_WHEEL_LEFT, -p_delta.x);
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			}
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		} break;
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	}
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}
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void AndroidInputHandler::_wheel_button_click(int event_buttons_mask, const Ref<InputEventMouseButton> &ev, int wheel_button, float factor) {
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	Ref<InputEventMouseButton> evd = ev->duplicate();
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	evd->set_button_index(wheel_button);
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	evd->set_button_mask(event_buttons_mask ^ (1 << (wheel_button - 1)));
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	evd->set_factor(factor);
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	input->parse_input_event(evd);
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	Ref<InputEventMouseButton> evdd = evd->duplicate();
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	evdd->set_pressed(false);
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	evdd->set_button_mask(event_buttons_mask);
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	input->parse_input_event(evdd);
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}
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void AndroidInputHandler::process_magnify(Point2 p_pos, float p_factor) {
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	Ref<InputEventMagnifyGesture> magnify_event;
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	magnify_event.instance();
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	_set_key_modifier_state(magnify_event);
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	magnify_event->set_position(p_pos);
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	magnify_event->set_factor(p_factor);
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	input->parse_input_event(magnify_event);
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}
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void AndroidInputHandler::process_pan(Point2 p_pos, Vector2 p_delta) {
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	Ref<InputEventPanGesture> pan_event;
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	pan_event.instance();
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	_set_key_modifier_state(pan_event);
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	pan_event->set_position(p_pos);
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	pan_event->set_delta(p_delta);
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	input->parse_input_event(pan_event);
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}
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int AndroidInputHandler::_button_index_from_mask(int button_mask) {
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	switch (button_mask) {
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		case BUTTON_MASK_LEFT:
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			return BUTTON_LEFT;
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		case BUTTON_MASK_RIGHT:
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			return BUTTON_RIGHT;
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		case BUTTON_MASK_MIDDLE:
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			return BUTTON_MIDDLE;
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		case BUTTON_MASK_XBUTTON1:
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			return BUTTON_XBUTTON1;
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		case BUTTON_MASK_XBUTTON2:
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			return BUTTON_XBUTTON2;
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		default:
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			return 0;
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	}
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}
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int AndroidInputHandler::_android_button_mask_to_godot_button_mask(int android_button_mask) {
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	int godot_button_mask = 0;
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	if (android_button_mask & AMOTION_EVENT_BUTTON_PRIMARY) {
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		godot_button_mask |= BUTTON_MASK_LEFT;
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	}
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	if (android_button_mask & AMOTION_EVENT_BUTTON_SECONDARY) {
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		godot_button_mask |= BUTTON_MASK_RIGHT;
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	}
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	if (android_button_mask & AMOTION_EVENT_BUTTON_TERTIARY) {
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		godot_button_mask |= BUTTON_MASK_MIDDLE;
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	}
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	if (android_button_mask & AMOTION_EVENT_BUTTON_BACK) {
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		godot_button_mask |= BUTTON_MASK_XBUTTON1;
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	}
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	if (android_button_mask & AMOTION_EVENT_BUTTON_FORWARD) {
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		godot_button_mask |= BUTTON_MASK_XBUTTON2;
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	}
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	return godot_button_mask;
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}
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void AndroidInputHandler::joy_connection_changed(int p_device, bool p_connected, String p_name) {
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	input->joy_connection_changed(p_device, p_connected, p_name, "");
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}
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