RetroArch/input/rwebinput_input.c
2014-09-11 07:06:20 +02:00

195 lines
5.2 KiB
C

/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Michael Lelli
*
* 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 "input_common.h"
#include "../driver.h"
#include "../boolean.h"
#include "../general.h"
#include "keyboard_line.h"
#include "../emscripten/RWebInput.h"
static bool uninited = false;
typedef struct rwebinput_input
{
rwebinput_state_t state;
int context;
} rwebinput_input_t;
static void *rwebinput_input_init(void)
{
rwebinput_input_t *rwebinput = (rwebinput_input_t*)calloc(1, sizeof(*rwebinput));
if (!rwebinput)
return NULL;
rwebinput->context = RWebInputInit();
if (!rwebinput->context)
{
free(rwebinput);
return NULL;
}
input_init_keyboard_lut(rarch_key_map_rwebinput);
return rwebinput;
}
static bool rwebinput_key_pressed(rwebinput_input_t *rwebinput, int key)
{
if (key >= RETROK_LAST)
return false;
unsigned sym = input_translate_rk_to_keysym((enum retro_key)key);
bool ret = rwebinput->state.keys[sym >> 3] & (1 << (sym & 7));
return ret;
}
static bool rwebinput_is_pressed(rwebinput_input_t *rwebinput, const struct retro_keybind *binds, unsigned id)
{
if (id < RARCH_BIND_LIST_END)
{
const struct retro_keybind *bind = &binds[id];
return bind->valid && rwebinput_key_pressed(rwebinput, binds[id].key);
}
else
return false;
}
static bool rwebinput_bind_button_pressed(void *data, int key)
{
rwebinput_input_t *rwebinput = (rwebinput_input_t*)data;
return rwebinput_is_pressed(rwebinput, g_settings.input.binds[0], key);
}
static int16_t rwebinput_mouse_state(rwebinput_input_t *rwebinput, unsigned id)
{
switch (id)
{
case RETRO_DEVICE_ID_MOUSE_X:
return (int16_t) rwebinput->state.mouse_x;
case RETRO_DEVICE_ID_MOUSE_Y:
return (int16_t) rwebinput->state.mouse_y;
case RETRO_DEVICE_ID_MOUSE_LEFT:
return rwebinput->state.mouse_l;
case RETRO_DEVICE_ID_MOUSE_RIGHT:
return rwebinput->state.mouse_r;
default:
return 0;
}
}
static int16_t rwebinput_analog_pressed(rwebinput_input_t *rwebinput, const struct retro_keybind *binds, unsigned index, unsigned id)
{
unsigned id_minus = 0;
unsigned id_plus = 0;
input_conv_analog_id_to_bind_id(index, id, &id_minus, &id_plus);
int16_t pressed_minus = rwebinput_is_pressed(rwebinput, binds, id_minus) ? -0x7fff : 0;
int16_t pressed_plus = rwebinput_is_pressed(rwebinput, binds, id_plus) ? 0x7fff : 0;
return pressed_plus + pressed_minus;
}
static int16_t rwebinput_input_state(void *data, const struct retro_keybind **binds, unsigned port, unsigned device, unsigned index, unsigned id)
{
rwebinput_input_t *rwebinput = (rwebinput_input_t*)data;
switch (device)
{
case RETRO_DEVICE_JOYPAD:
return rwebinput_is_pressed(rwebinput, binds[port], id);
case RETRO_DEVICE_ANALOG:
return rwebinput_analog_pressed(rwebinput, binds[port], index, id);
case RETRO_DEVICE_KEYBOARD:
return rwebinput_key_pressed(rwebinput, id);
case RETRO_DEVICE_MOUSE:
return rwebinput_mouse_state(rwebinput, id);
default:
return 0;
}
}
static void rwebinput_input_free(void *data)
{
rwebinput_input_t *rwebinput = (rwebinput_input_t*)data;
uninited = true;
RWebInputDestroy(rwebinput->context);
free(data);
}
static void rwebinput_input_poll(void *data)
{
rwebinput_input_t *rwebinput = (rwebinput_input_t*)data;
rwebinput_state_t *state = RWebInputPoll(rwebinput->context);
// get new keys
for (unsigned i = 0; i < 32; i++)
{
if (state->keys[i] != rwebinput->state.keys[i])
{
uint8_t diff = state->keys[i] ^ rwebinput->state.keys[i];
for (unsigned k = 0; diff; diff >>= 1, k++)
{
if (diff & 1)
{
input_keyboard_event((state->keys[i] & (1 << k)) != 0, input_translate_keysym_to_rk(i * 8 + k), 0, 0);
}
}
}
}
memcpy(&rwebinput->state, state, sizeof(rwebinput->state));
}
static void rwebinput_grab_mouse(void *data, bool state)
{
(void)data;
(void)state;
}
static uint64_t rwebinput_get_capabilities(void *data)
{
uint64_t caps = 0;
caps |= (1 << RETRO_DEVICE_JOYPAD);
caps |= (1 << RETRO_DEVICE_ANALOG);
caps |= (1 << RETRO_DEVICE_KEYBOARD);
caps |= (1 << RETRO_DEVICE_MOUSE);
return caps;
}
input_driver_t input_rwebinput = {
rwebinput_input_init,
rwebinput_input_poll,
rwebinput_input_state,
rwebinput_bind_button_pressed,
rwebinput_input_free,
NULL,
NULL,
rwebinput_get_capabilities,
"rwebinput",
rwebinput_grab_mouse,
};