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RetroArch/input/x11_input.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
*
* 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 <stdint.h>
#include <stdlib.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
typedef struct x11_input
{
const rarch_joypad_driver_t *joypad;
Display *display;
Window win;
char state[32];
bool mouse_l, mouse_r, mouse_m, mouse_wu, mouse_wd;
int mouse_x, mouse_y;
int mouse_last_x, mouse_last_y;
bool grab_mouse;
} x11_input_t;
static void *x_input_init(void)
{
if (driver.display_type != RARCH_DISPLAY_X11)
{
RARCH_ERR("Currently active window is not an X11 window. Cannot use this driver.\n");
return NULL;
}
x11_input_t *x11 = (x11_input_t*)calloc(1, sizeof(*x11));
if (!x11)
return NULL;
/* Borrow the active X window ... */
x11->display = (Display*)driver.video_display;
x11->win = (Window)driver.video_window;
x11->joypad = input_joypad_init_driver(g_settings.input.joypad_driver);
input_init_keyboard_lut(rarch_key_map_x11);
return x11;
}
static bool x_key_pressed(x11_input_t *x11, int key)
{
if (key >= RETROK_LAST)
return false;
unsigned sym = input_translate_rk_to_keysym((enum retro_key)key);
int keycode = XKeysymToKeycode(x11->display, sym);
bool ret = x11->state[keycode >> 3] & (1 << (keycode & 7));
return ret;
}
static bool x_is_pressed(x11_input_t *x11,
const struct retro_keybind *binds, unsigned id)
{
if (id < RARCH_BIND_LIST_END)
{
const struct retro_keybind *bind = &binds[id];
return bind->valid && x_key_pressed(x11, binds[id].key);
}
return false;
}
static int16_t x_pressed_analog(x11_input_t *x11,
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 = x_is_pressed(x11, binds, id_minus) ? -0x7fff : 0;
int16_t pressed_plus = x_is_pressed(x11, binds, id_plus) ? 0x7fff : 0;
return pressed_plus + pressed_minus;
}
static bool x_bind_button_pressed(void *data, int key)
{
x11_input_t *x11 = (x11_input_t*)data;
return x_is_pressed(x11, g_settings.input.binds[0], key) ||
input_joypad_pressed(x11->joypad, 0, g_settings.input.binds[0], key);
}
static int16_t x_mouse_state(x11_input_t *x11, unsigned id)
{
switch (id)
{
case RETRO_DEVICE_ID_MOUSE_X:
return x11->mouse_x - x11->mouse_last_x;
case RETRO_DEVICE_ID_MOUSE_Y:
return x11->mouse_y - x11->mouse_last_y;
case RETRO_DEVICE_ID_MOUSE_LEFT:
return x11->mouse_l;
case RETRO_DEVICE_ID_MOUSE_RIGHT:
return x11->mouse_r;
case RETRO_DEVICE_ID_MOUSE_WHEELUP:
return x11->mouse_wu;
case RETRO_DEVICE_ID_MOUSE_WHEELDOWN:
return x11->mouse_wd;
case RETRO_DEVICE_ID_MOUSE_MIDDLE:
return x11->mouse_m;
default:
return 0;
}
}
static int16_t x_pointer_state(x11_input_t *x11,
unsigned index, unsigned id, bool screen)
{
if (index != 0)
return 0;
int16_t res_x = 0, res_y = 0, res_screen_x = 0, res_screen_y = 0;
bool valid = input_translate_coord_viewport(x11->mouse_x, x11->mouse_y,
&res_x, &res_y, &res_screen_x, &res_screen_y);
if (!valid)
return 0;
if (screen)
{
res_x = res_screen_x;
res_y = res_screen_y;
}
bool inside = (res_x >= -0x7fff) && (res_y >= -0x7fff);
if (!inside)
return 0;
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 x11->mouse_l;
default:
return 0;
}
}
static int16_t x_lightgun_state(x11_input_t *x11, unsigned id)
{
switch (id)
{
case RETRO_DEVICE_ID_LIGHTGUN_X:
return x11->mouse_x - x11->mouse_last_x;
case RETRO_DEVICE_ID_LIGHTGUN_Y:
return x11->mouse_y - x11->mouse_last_y;
case RETRO_DEVICE_ID_LIGHTGUN_TRIGGER:
return x11->mouse_l;
case RETRO_DEVICE_ID_LIGHTGUN_CURSOR:
return x11->mouse_m;
case RETRO_DEVICE_ID_LIGHTGUN_TURBO:
return x11->mouse_r;
case RETRO_DEVICE_ID_LIGHTGUN_START:
return x11->mouse_m && x11->mouse_r;
case RETRO_DEVICE_ID_LIGHTGUN_PAUSE:
return x11->mouse_m && x11->mouse_l;
default:
return 0;
}
}
static int16_t x_input_state(void *data,
const struct retro_keybind **binds, unsigned port,
unsigned device, unsigned index, unsigned id)
{
x11_input_t *x11 = (x11_input_t*)data;
int16_t ret;
switch (device)
{
case RETRO_DEVICE_JOYPAD:
return x_is_pressed(x11, binds[port], id) ||
input_joypad_pressed(x11->joypad, port, binds[port], id);
case RETRO_DEVICE_KEYBOARD:
return x_key_pressed(x11, id);
case RETRO_DEVICE_ANALOG:
ret = x_pressed_analog(x11, binds[port], index, id);
if (!ret)
ret = input_joypad_analog(x11->joypad, port, index,
id, binds[port]);
return ret;
case RETRO_DEVICE_MOUSE:
return x_mouse_state(x11, id);
case RETRO_DEVICE_POINTER:
case RARCH_DEVICE_POINTER_SCREEN:
return x_pointer_state(x11, index, id,
device == RARCH_DEVICE_POINTER_SCREEN);
case RETRO_DEVICE_LIGHTGUN:
return x_lightgun_state(x11, id);
default:
return 0;
}
}
static void x_input_free(void *data)
{
x11_input_t *x11 = (x11_input_t*)data;
if (!x11)
return;
if (x11->joypad)
x11->joypad->destroy();
free(x11);
}
static void x_input_poll_mouse(x11_input_t *x11)
{
Window root_win, child_win;
int root_x, root_y, win_x, win_y;
unsigned mask;
x11->mouse_last_x = x11->mouse_x;
x11->mouse_last_y = x11->mouse_y;
XQueryPointer(x11->display,
x11->win,
&root_win, &child_win,
&root_x, &root_y,
&win_x, &win_y,
&mask);
x11->mouse_x = win_x;
x11->mouse_y = win_y;
x11->mouse_l = mask & Button1Mask;
x11->mouse_m = mask & Button2Mask;
x11->mouse_r = mask & Button3Mask;
x11->mouse_wu = mask & Button4Mask;
x11->mouse_wd = mask & Button5Mask;
/* Somewhat hacky, but seem to do the job. */
if (x11->grab_mouse && driver.video->focus(driver.video_data))
{
struct rarch_viewport vp = {0};
if (driver.video && driver.video->viewport_info)
driver.video->viewport_info(driver.video_data, &vp);
int mid_w = vp.full_width >> 1;
int mid_h = vp.full_height >> 1;
if (x11->mouse_x != mid_w || x11->mouse_y != mid_h)
{
XWarpPointer(x11->display, None,
x11->win, 0, 0, 0, 0,
mid_w, mid_h);
}
x11->mouse_last_x = mid_w;
x11->mouse_last_y = mid_h;
}
}
static void x_input_poll(void *data)
{
x11_input_t *x11 = (x11_input_t*)data;
if (driver.video->focus(driver.video_data))
XQueryKeymap(x11->display, x11->state);
else
memset(x11->state, 0, sizeof(x11->state));
x_input_poll_mouse(x11);
if (x11->joypad)
x11->joypad->poll();
}
static void x_grab_mouse(void *data, bool state)
{
x11_input_t *x11 = (x11_input_t*)data;
x11->grab_mouse = state;
}
static bool x_set_rumble(void *data, unsigned port,
enum retro_rumble_effect effect, uint16_t strength)
{
x11_input_t *x11 = (x11_input_t*)data;
return input_joypad_set_rumble(x11->joypad, port, effect, strength);
}
static const rarch_joypad_driver_t *x_get_joypad_driver(void *data)
{
x11_input_t *x11 = (x11_input_t*)data;
return x11->joypad;
}
static uint64_t x_input_get_capabilities(void *data)
{
uint64_t caps = 0;
caps |= (1 << RETRO_DEVICE_JOYPAD);
caps |= (1 << RETRO_DEVICE_MOUSE);
caps |= (1 << RETRO_DEVICE_KEYBOARD);
caps |= (1 << RETRO_DEVICE_LIGHTGUN);
caps |= (1 << RETRO_DEVICE_POINTER);
caps |= (1 << RETRO_DEVICE_ANALOG);
return caps;
}
input_driver_t input_x = {
x_input_init,
x_input_poll,
x_input_state,
x_bind_button_pressed,
x_input_free,
NULL,
NULL,
x_input_get_capabilities,
"x",
x_grab_mouse,
x_set_rumble,
x_get_joypad_driver,
};
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