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RetroArch/input/drivers/wayland_input.c
zoltanvb fe1575bc54
Input sanitization, wayland enhancement and overlay (#17308) 
Adapt the sanitized pointer handling, discussed at #17196 :

Overlay "driver" specific changes:

- make sure pointer position is always within [-0x7fff,0x7fff] by using the confined wrapper
- enable pointer offscreen query
- report -0x8000 for lightgun if pointer is at the edge
- align lightgun offscreen reporting and button ID conversion with other drivers

Android driver specific changes:

- make sure pointer position is always within [-0x7fff,0x7fff] by using the confined wrapper
- remove extra "inside" checks, general simplification
- enable pointer offscreen reporting
- report same value for all ports when querying mouse and lightgun
- fill missing lightgun support, with fixed button map

Udev and X11 driver specific changes:

- simulate max. 3 touches instead of 1 using different mouse buttons

Wayland driver specific changes:

- integrate touch input better to the overall handling (enabling overlay usage with mouse)
- simulate max. 3 touches instead of 1 using different mouse buttons
2024-12-29 18:57:27 +01:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2015 - Hans-Kristian Arntzen
* Copyright (C) 2011-2017 - Daniel De Matteis
*
* RetroArch 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 Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch 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 RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdint.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <limits.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <wayland-client.h>
#include <wayland-cursor.h>
#ifdef HAVE_CONFIG_H
#include "../../config.h"
#endif
#include <file/file_path.h>
#include <compat/strl.h>
#include <string/stdstring.h>
#include <retro_miscellaneous.h>
#include "../input_keymaps.h"
#include "../common/linux_common.h"
#include "../common/wayland_common.h"
#include "../../retroarch.h"
#include "../../verbosity.h"
/* Forward declaration */
void flush_wayland_fd(void *data);
static bool wayland_context_gettouchpos(
gfx_ctx_wayland_data_t *wl,
unsigned id,
unsigned* touch_x, unsigned* touch_y)
{
*touch_x = wl->active_touch_positions[id].x;
*touch_y = wl->active_touch_positions[id].y;
return wl->active_touch_positions[id].active;
}
static void input_wl_poll(void *data)
{
int id;
unsigned touch_x = 0;
unsigned touch_y = 0;
input_ctx_wayland_data_t *wl = (input_ctx_wayland_data_t*)data;
if (!wl)
return;
flush_wayland_fd(wl);
wl->mouse.last_x = wl->mouse.x;
wl->mouse.last_y = wl->mouse.y;
if (!wl->mouse.focus)
{
wl->mouse.delta_x = 0;
wl->mouse.delta_y = 0;
}
if (wl->gfx->locked_pointer)
{
/* Clamp X */
if (wl->mouse.x < 0)
wl->mouse.x = 0;
if (wl->mouse.x >= (int)wl->gfx->buffer_width)
wl->mouse.x = ((int)wl->gfx->buffer_width - 1);
/* Clamp Y */
if (wl->mouse.y < 0)
wl->mouse.y = 0;
if (wl->mouse.y >= (int)wl->gfx->buffer_height)
wl->mouse.y = ((int)wl->gfx->buffer_height - 1);
}
for (id = 0; id < MAX_TOUCHES; id++)
{
if (wayland_context_gettouchpos(wl->gfx, id, &touch_x, &touch_y))
wl->touches[id].active = true;
else
wl->touches[id].active = false;
wl->touches[id].x = touch_x;
wl->touches[id].y = touch_y;
}
}
static int16_t input_wl_touch_state(input_ctx_wayland_data_t *wl,
unsigned idx, unsigned id, bool screen)
{
if (idx <= MAX_TOUCHES)
{
struct video_viewport vp = {0};
int16_t res_x = 0;
int16_t res_y = 0;
int16_t res_screen_x = 0;
int16_t res_screen_y = 0;
/* Shortcut: mouse button events will be reported on desktop with 0/0 coordinates. *
* Skip these, mouse handling will catch it elsewhere. */
if (wl->touches[idx].x == 0 && wl->touches[idx].y == 0)
return 0;
if (video_driver_translate_coord_viewport_confined_wrap(&vp,
wl->touches[idx].x, wl->touches[idx].y,
&res_x, &res_y, &res_screen_x, &res_screen_y))
{
if (screen)
{
res_x = res_screen_x;
res_y = res_screen_y;
}
switch (id)
{
case RETRO_DEVICE_ID_POINTER_X:
return res_x;
case RETRO_DEVICE_ID_POINTER_Y:
return res_y;
case RETRO_DEVICE_ID_POINTER_PRESSED:
return wl->touches[idx].active;
}
}
}
return 0;
}
static int16_t input_wl_state(
void *data,
const input_device_driver_t *joypad,
const input_device_driver_t *sec_joypad,
rarch_joypad_info_t *joypad_info,
const retro_keybind_set *binds,
bool keyboard_mapping_blocked,
unsigned port,
unsigned device,
unsigned idx,
unsigned id)
{
input_ctx_wayland_data_t *wl = (input_ctx_wayland_data_t*)data;
int x, y = 0;
switch (device)
{
case RETRO_DEVICE_JOYPAD:
if (id == RETRO_DEVICE_ID_JOYPAD_MASK)
{
unsigned i;
int16_t ret = 0;
for (i = 0; i < RARCH_FIRST_CUSTOM_BIND; i++)
{
if (binds[port][i].valid)
{
/*if (wl_mouse_button_pressed(udev, port, binds[port][i].mbutton))
ret |= (1 << i);
*/
/* TODO: support custom mouse-to-retropad binds */
}
}
if (!keyboard_mapping_blocked)
{
for (i = 0; i < RARCH_FIRST_CUSTOM_BIND; i++)
{
if (binds[port][i].valid)
{
if ( (binds[port][i].key && binds[port][i].key < RETROK_LAST)
&& BIT_GET(wl->key_state, rarch_keysym_lut[binds[port][i].key]))
ret |= (1 << i);
}
}
}
return ret;
}
if (id < RARCH_BIND_LIST_END)
{
if (binds[port][id].valid)
{
if ( (binds[port][id].key && binds[port][id].key < RETROK_LAST)
&& BIT_GET(wl->key_state, rarch_keysym_lut[binds[port][id].key])
&& (id == RARCH_GAME_FOCUS_TOGGLE || !keyboard_mapping_blocked)
)
return 1;
/* TODO: support default mouse-to-retropad bindings */
/* else if (wl_mouse_button_pressed(udev, port, binds[port][i].mbutton))
return 1;
*/
}
}
break;
case RETRO_DEVICE_ANALOG:
if (binds[port])
{
int id_minus_key = 0;
int id_plus_key = 0;
unsigned id_minus = 0;
unsigned id_plus = 0;
int16_t ret = 0;
bool id_plus_valid = false;
bool id_minus_valid = false;
input_conv_analog_id_to_bind_id(idx, id, id_minus, id_plus);
id_minus_valid = binds[port][id_minus].valid;
id_plus_valid = binds[port][id_plus].valid;
id_minus_key = binds[port][id_minus].key;
id_plus_key = binds[port][id_plus].key;
if (id_plus_valid && id_plus_key && id_plus_key < RETROK_LAST)
{
unsigned sym = rarch_keysym_lut[(enum retro_key)id_plus_key];
if (BIT_GET(wl->key_state, sym))
ret = 0x7fff;
}
if (id_minus_valid && id_minus_key && id_minus_key < RETROK_LAST)
{
unsigned sym = rarch_keysym_lut[(enum retro_key)id_minus_key];
if (BIT_GET(wl->key_state, sym))
ret += -0x7fff;
}
return ret;
}
break;
case RETRO_DEVICE_KEYBOARD:
return (id && id < RETROK_LAST) && BIT_GET(wl->key_state, rarch_keysym_lut[(enum retro_key)id]);
case RETRO_DEVICE_MOUSE:
case RARCH_DEVICE_MOUSE_SCREEN:
/* The system-wide mouse is reported for all ports. *
* Multi-mouse may be implemented using different wayland seats, see issue #16886 */
{
bool state = false;
bool screen = (device == RARCH_DEVICE_MOUSE_SCREEN);
switch (id)
{
case RETRO_DEVICE_ID_MOUSE_WHEELUP:
state = wl->mouse.wu;
wl->mouse.wu = false;
return state;
case RETRO_DEVICE_ID_MOUSE_WHEELDOWN:
state = wl->mouse.wd;
wl->mouse.wd = false;
return state;
case RETRO_DEVICE_ID_MOUSE_X:
x = screen ? wl->mouse.x : wl->mouse.delta_x;
wl->mouse.delta_x = 0;
return x;
case RETRO_DEVICE_ID_MOUSE_Y:
y = screen ? wl->mouse.y : wl->mouse.delta_y;
wl->mouse.delta_y = 0;
return y;
case RETRO_DEVICE_ID_MOUSE_LEFT:
return wl->mouse.left;
case RETRO_DEVICE_ID_MOUSE_RIGHT:
return wl->mouse.right;
case RETRO_DEVICE_ID_MOUSE_MIDDLE:
return wl->mouse.middle;
case RETRO_DEVICE_ID_MOUSE_BUTTON_4:
return wl->mouse.side;
case RETRO_DEVICE_ID_MOUSE_BUTTON_5:
return wl->mouse.extra;
case RETRO_DEVICE_ID_MOUSE_HORIZ_WHEELDOWN:
state = wl->mouse.wl;
wl->mouse.wl = false;
return state;
case RETRO_DEVICE_ID_MOUSE_HORIZ_WHEELUP:
state = wl->mouse.wr;
wl->mouse.wr = false;
return state;
}
}
break;
case RETRO_DEVICE_POINTER:
case RARCH_DEVICE_POINTER_SCREEN:
/* All ports report the same pointer state. See notes at mouse case. */
if (idx < MAX_TOUCHES)
{
int16_t touch_state = input_wl_touch_state(wl, idx, id,
device == RARCH_DEVICE_POINTER_SCREEN);
/* Touch state is only reported if it is meaningful. */
if (touch_state)
return touch_state;
}
/* Fall through to system pointer emulating max. 3 touches. */
if (idx < 3)
{
struct video_viewport vp = {0};
bool screen =
(device == RARCH_DEVICE_POINTER_SCREEN);
int16_t res_x = 0;
int16_t res_y = 0;
int16_t res_screen_x = 0;
int16_t res_screen_y = 0;
if (video_driver_translate_coord_viewport_confined_wrap(&vp,
wl->mouse.x, wl->mouse.y,
&res_x, &res_y, &res_screen_x, &res_screen_y))
{
if (screen)
{
res_x = res_screen_x;
res_y = res_screen_y;
}
switch (id)
{
case RETRO_DEVICE_ID_POINTER_X:
return res_x;
case RETRO_DEVICE_ID_POINTER_Y:
return res_y;
case RETRO_DEVICE_ID_POINTER_PRESSED:
if (idx == 0)
return (wl->mouse.left | wl->mouse.right | wl->mouse.middle);
else if (idx == 1)
return (wl->mouse.right | wl->mouse.middle);
else if (idx == 2)
return wl->mouse.middle;
case RETRO_DEVICE_ID_POINTER_IS_OFFSCREEN:
return input_driver_pointer_is_offscreen(res_x, res_y);
default:
break;
}
}
}
break;
case RETRO_DEVICE_LIGHTGUN:
/* All ports report the same lightgun state. See notes at mouse case. */
{
struct video_viewport vp = {0};
int16_t res_x = 0;
int16_t res_y = 0;
int16_t res_screen_x = 0;
int16_t res_screen_y = 0;
if (video_driver_translate_coord_viewport_wrap(&vp,
wl->mouse.x, wl->mouse.y,
&res_x, &res_y, &res_screen_x, &res_screen_y))
{
switch (id)
{
case RETRO_DEVICE_ID_LIGHTGUN_X:
return wl->mouse.delta_x;
case RETRO_DEVICE_ID_LIGHTGUN_Y:
return wl->mouse.delta_y;
case RETRO_DEVICE_ID_LIGHTGUN_SCREEN_X:
return res_x;
case RETRO_DEVICE_ID_LIGHTGUN_SCREEN_Y:
return res_y;
case RETRO_DEVICE_ID_LIGHTGUN_TRIGGER:
return wl->mouse.left;
case RETRO_DEVICE_ID_LIGHTGUN_RELOAD:
return wl->mouse.middle;
case RETRO_DEVICE_ID_LIGHTGUN_START:
return wl->mouse.right;
case RETRO_DEVICE_ID_LIGHTGUN_SELECT:
return wl->mouse.left && wl->mouse.right;
case RETRO_DEVICE_ID_LIGHTGUN_IS_OFFSCREEN:
return input_driver_pointer_is_offscreen(res_x, res_y);
case RETRO_DEVICE_ID_LIGHTGUN_AUX_A: /* TODO */
case RETRO_DEVICE_ID_LIGHTGUN_AUX_B: /* TODO */
case RETRO_DEVICE_ID_LIGHTGUN_AUX_C: /* TODO */
case RETRO_DEVICE_ID_LIGHTGUN_DPAD_UP: /* TODO */
case RETRO_DEVICE_ID_LIGHTGUN_DPAD_DOWN: /* TODO */
case RETRO_DEVICE_ID_LIGHTGUN_DPAD_LEFT: /* TODO */
case RETRO_DEVICE_ID_LIGHTGUN_DPAD_RIGHT: /* TODO */
break;
}
}
}
break;
}
return 0;
}
static void input_wl_free(void *data) { }
bool input_wl_init(void *data, const char *joypad_name)
{
input_ctx_wayland_data_t *wl = (input_ctx_wayland_data_t*)data;
if (!wl)
return false;
input_keymaps_init_keyboard_lut(rarch_key_map_linux);
return true;
}
static uint64_t input_wl_get_capabilities(void *data)
{
return
(1 << RETRO_DEVICE_JOYPAD)
| (1 << RETRO_DEVICE_ANALOG)
| (1 << RETRO_DEVICE_KEYBOARD)
| (1 << RETRO_DEVICE_MOUSE)
| (1 << RETRO_DEVICE_LIGHTGUN);
}
static void input_wl_grab_mouse(void *data, bool state)
{
input_ctx_wayland_data_t *wl = (input_ctx_wayland_data_t*)data;
gfx_ctx_wayland_data_t *gfx = (gfx_ctx_wayland_data_t*)wl->gfx;
if (gfx->pointer_constraints && gfx->wl_pointer)
{
if (state && !gfx->locked_pointer)
{
gfx->locked_pointer = zwp_pointer_constraints_v1_lock_pointer(gfx->pointer_constraints,
gfx->surface, gfx->wl_pointer, NULL, ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_PERSISTENT);
zwp_locked_pointer_v1_add_listener(gfx->locked_pointer,
&locked_pointer_listener, gfx);
}
else if (!state && gfx->locked_pointer)
{
zwp_locked_pointer_v1_destroy(gfx->locked_pointer);
gfx->locked_pointer = NULL;
}
}
}
input_driver_t input_wayland = {
NULL,
input_wl_poll,
input_wl_state,
input_wl_free,
NULL,
NULL,
input_wl_get_capabilities,
"wayland",
input_wl_grab_mouse, /* grab_mouse */
NULL,
NULL
};
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