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trezor-firmware/core/embed/unix/touch/touch.c
2023-04-19 21:36:51 +02:00

128 lines
3.4 KiB
C

/*
* This file is part of the Trezor project, https://trezor.io/
*
* Copyright (c) SatoshiLabs
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <SDL.h>
#include <stdbool.h>
#include <stdint.h>
#include TREZOR_BOARD
#ifdef USE_TOUCH
#include "common.h"
#include "touch.h"
extern int sdl_display_res_x, sdl_display_res_y;
extern int sdl_touch_offset_x, sdl_touch_offset_y;
static bool _touch_detected = false;
uint32_t touch_read(void) {
emulator_poll_events();
SDL_Event event;
SDL_PumpEvents();
if (SDL_PollEvent(&event) > 0) {
switch (event.type) {
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEMOTION:
case SDL_MOUSEBUTTONUP: {
const int x = event.button.x - sdl_touch_offset_x;
const int y = event.button.y - sdl_touch_offset_y;
if (x < 0 || y < 0 || x >= sdl_display_res_x ||
y >= sdl_display_res_y) {
if (event.motion.state) {
const int clamp_x =
(x < 0)
? 0
: ((x >= sdl_display_res_x) ? sdl_display_res_x - 1 : x);
const int clamp_y =
(y < 0)
? 0
: ((y >= sdl_display_res_y) ? sdl_display_res_y - 1 : y);
return TOUCH_END | touch_pack_xy(clamp_x, clamp_y);
} else {
break;
}
}
switch (event.type) {
case SDL_MOUSEBUTTONDOWN:
_touch_detected = true;
return TOUCH_START | touch_pack_xy(x, y);
case SDL_MOUSEMOTION:
// remove other SDL_MOUSEMOTION events from queue
SDL_FlushEvent(SDL_MOUSEMOTION);
if (event.motion.state) {
return TOUCH_MOVE | touch_pack_xy(x, y);
}
break;
case SDL_MOUSEBUTTONUP:
_touch_detected = false;
return TOUCH_END | touch_pack_xy(x, y);
}
break;
}
}
}
return 0;
}
void touch_init(void) {}
void touch_power_on(void) {}
uint32_t touch_is_detected(void) { return _touch_detected; }
#endif
#ifdef USE_BUTTON
#include "button.h"
uint32_t button_read(void) {
SDL_Event event;
SDL_PumpEvents();
if (SDL_PollEvent(&event) > 0) {
switch (event.type) {
case SDL_KEYDOWN:
if (event.key.repeat) {
break;
}
switch (event.key.keysym.sym) {
case SDLK_LEFT:
return BTN_EVT_DOWN | BTN_LEFT;
case SDLK_RIGHT:
return BTN_EVT_DOWN | BTN_RIGHT;
}
break;
case SDL_KEYUP:
if (event.key.repeat) {
break;
}
switch (event.key.keysym.sym) {
case SDLK_LEFT:
return BTN_EVT_UP | BTN_LEFT;
case SDLK_RIGHT:
return BTN_EVT_UP | BTN_RIGHT;
}
break;
}
}
return 0;
}
#endif