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RetroArch/input/drivers/x11_input.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2015 - 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 <stdint.h>
#include <stdlib.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
#include <boolean.h>
#include "../input_common.h"
#include "../input_joypad.h"
#include "../input_keymaps.h"
#include "../../driver.h"
#include "../../gfx/video_viewport.h"
#include "../../general.h"
/* forward declarations */
void x_input_poll_wheel(void *data, XButtonEvent *event, bool latch);
typedef struct x11_input
{
bool blocked;
const input_device_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;
const struct rarch_key_map rarch_key_map_x11[] = {
{ XK_BackSpace, RETROK_BACKSPACE },
{ XK_Tab, RETROK_TAB },
{ XK_Clear, RETROK_CLEAR },
{ XK_Return, RETROK_RETURN },
{ XK_Pause, RETROK_PAUSE },
{ XK_Escape, RETROK_ESCAPE },
{ XK_space, RETROK_SPACE },
{ XK_exclam, RETROK_EXCLAIM },
{ XK_quotedbl, RETROK_QUOTEDBL },
{ XK_numbersign, RETROK_HASH },
{ XK_dollar, RETROK_DOLLAR },
{ XK_ampersand, RETROK_AMPERSAND },
{ XK_apostrophe, RETROK_QUOTE },
{ XK_parenleft, RETROK_LEFTPAREN },
{ XK_parenright, RETROK_RIGHTPAREN },
{ XK_asterisk, RETROK_ASTERISK },
{ XK_plus, RETROK_PLUS },
{ XK_comma, RETROK_COMMA },
{ XK_minus, RETROK_MINUS },
{ XK_period, RETROK_PERIOD },
{ XK_slash, RETROK_SLASH },
{ XK_0, RETROK_0 },
{ XK_1, RETROK_1 },
{ XK_2, RETROK_2 },
{ XK_3, RETROK_3 },
{ XK_4, RETROK_4 },
{ XK_5, RETROK_5 },
{ XK_6, RETROK_6 },
{ XK_7, RETROK_7 },
{ XK_8, RETROK_8 },
{ XK_9, RETROK_9 },
{ XK_colon, RETROK_COLON },
{ XK_semicolon, RETROK_SEMICOLON },
{ XK_less, RETROK_LESS },
{ XK_equal, RETROK_EQUALS },
{ XK_greater, RETROK_GREATER },
{ XK_question, RETROK_QUESTION },
{ XK_at, RETROK_AT },
{ XK_bracketleft, RETROK_LEFTBRACKET },
{ XK_backslash, RETROK_BACKSLASH },
{ XK_bracketright, RETROK_RIGHTBRACKET },
{ XK_dead_circumflex, RETROK_CARET },
{ XK_underscore, RETROK_UNDERSCORE },
{ XK_grave, RETROK_BACKQUOTE },
{ XK_a, RETROK_a },
{ XK_b, RETROK_b },
{ XK_c, RETROK_c },
{ XK_d, RETROK_d },
{ XK_e, RETROK_e },
{ XK_f, RETROK_f },
{ XK_g, RETROK_g },
{ XK_h, RETROK_h },
{ XK_i, RETROK_i },
{ XK_j, RETROK_j },
{ XK_k, RETROK_k },
{ XK_l, RETROK_l },
{ XK_m, RETROK_m },
{ XK_n, RETROK_n },
{ XK_o, RETROK_o },
{ XK_p, RETROK_p },
{ XK_q, RETROK_q },
{ XK_r, RETROK_r },
{ XK_s, RETROK_s },
{ XK_t, RETROK_t },
{ XK_u, RETROK_u },
{ XK_v, RETROK_v },
{ XK_w, RETROK_w },
{ XK_x, RETROK_x },
{ XK_y, RETROK_y },
{ XK_z, RETROK_z },
{ XK_Delete, RETROK_DELETE },
{ XK_KP_0, RETROK_KP0 },
{ XK_KP_1, RETROK_KP1 },
{ XK_KP_2, RETROK_KP2 },
{ XK_KP_3, RETROK_KP3 },
{ XK_KP_4, RETROK_KP4 },
{ XK_KP_5, RETROK_KP5 },
{ XK_KP_6, RETROK_KP6 },
{ XK_KP_7, RETROK_KP7 },
{ XK_KP_8, RETROK_KP8 },
{ XK_KP_9, RETROK_KP9 },
{ XK_KP_Decimal, RETROK_KP_PERIOD },
{ XK_KP_Divide, RETROK_KP_DIVIDE },
{ XK_KP_Multiply, RETROK_KP_MULTIPLY },
{ XK_KP_Subtract, RETROK_KP_MINUS },
{ XK_KP_Add, RETROK_KP_PLUS },
{ XK_KP_Enter, RETROK_KP_ENTER },
{ XK_KP_Equal, RETROK_KP_EQUALS },
{ XK_Up, RETROK_UP },
{ XK_Down, RETROK_DOWN },
{ XK_Right, RETROK_RIGHT },
{ XK_Left, RETROK_LEFT },
{ XK_Insert, RETROK_INSERT },
{ XK_Home, RETROK_HOME },
{ XK_End, RETROK_END },
{ XK_Page_Up, RETROK_PAGEUP },
{ XK_Page_Down, RETROK_PAGEDOWN },
{ XK_F1, RETROK_F1 },
{ XK_F2, RETROK_F2 },
{ XK_F3, RETROK_F3 },
{ XK_F4, RETROK_F4 },
{ XK_F5, RETROK_F5 },
{ XK_F6, RETROK_F6 },
{ XK_F7, RETROK_F7 },
{ XK_F8, RETROK_F8 },
{ XK_F9, RETROK_F9 },
{ XK_F10, RETROK_F10 },
{ XK_F11, RETROK_F11 },
{ XK_F12, RETROK_F12 },
{ XK_F13, RETROK_F13 },
{ XK_F14, RETROK_F14 },
{ XK_F15, RETROK_F15 },
{ XK_Num_Lock, RETROK_NUMLOCK },
{ XK_Caps_Lock, RETROK_CAPSLOCK },
{ XK_Scroll_Lock, RETROK_SCROLLOCK },
{ XK_Shift_R, RETROK_RSHIFT },
{ XK_Shift_L, RETROK_LSHIFT },
{ XK_Control_R, RETROK_RCTRL },
{ XK_Control_L, RETROK_LCTRL },
{ XK_Alt_R, RETROK_RALT },
{ XK_Alt_L, RETROK_LALT },
{ XK_Meta_R, RETROK_RMETA },
{ XK_Meta_L, RETROK_LMETA },
{ XK_Super_L, RETROK_LSUPER },
{ XK_Super_R, RETROK_RSUPER },
{ XK_Mode_switch, RETROK_MODE },
{ XK_Multi_key, RETROK_COMPOSE },
{ XK_Help, RETROK_HELP },
{ XK_Print, RETROK_PRINT },
{ XK_Sys_Req, RETROK_SYSREQ },
{ XK_Break, RETROK_BREAK },
{ XK_Menu, RETROK_MENU },
/*{ ?, RETROK_POWER },*/
{ XK_EuroSign, RETROK_EURO },
{ XK_Undo, RETROK_UNDO },
{ 0, RETROK_UNKNOWN },
};
static void *x_input_init(void)
{
driver_t *driver = driver_get_ptr();
settings_t *settings = config_get_ptr();
x11_input_t *x11;
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 = (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(settings->input.joypad_driver, x11);
input_keymaps_init_keyboard_lut(rarch_key_map_x11);
return x11;
}
static bool x_key_pressed(x11_input_t *x11, int key)
{
unsigned sym;
int keycode;
bool ret;
if (key >= RETROK_LAST)
return false;
sym = input_keymaps_translate_rk_to_keysym((enum retro_key)key);
keycode = XKeysymToKeycode(x11->display, sym);
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 idx, unsigned id)
{
int16_t pressed_minus = 0, pressed_plus = 0;
unsigned id_minus = 0;
unsigned id_plus = 0;
input_conv_analog_id_to_bind_id(idx, id, &id_minus, &id_plus);
if (x_is_pressed(x11, binds, id_minus))
pressed_minus = -0x7fff;
if (x_is_pressed(x11, binds, id_plus))
pressed_plus = 0x7fff;
return pressed_plus + pressed_minus;
}
static bool x_input_key_pressed(void *data, int key)
{
x11_input_t *x11 = (x11_input_t*)data;
settings_t *settings = config_get_ptr();
return x_is_pressed(x11, settings->input.binds[0], key) ||
input_joypad_pressed(x11->joypad, 0, settings->input.binds[0], key);
}
static bool x_input_meta_key_pressed(void *data, int key)
{
return false;
}
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:
{
int16_t ret = x11->mouse_wu;
x11->mouse_wu = 0;
return ret;
}
case RETRO_DEVICE_ID_MOUSE_WHEELDOWN:
{
int16_t ret = x11->mouse_wd;
x11->mouse_wd = 0;
return ret;
}
case RETRO_DEVICE_ID_MOUSE_MIDDLE:
return x11->mouse_m;
}
return 0;
}
static int16_t x_mouse_state_screen(x11_input_t *x11, unsigned id)
{
switch (id)
{
case RETRO_DEVICE_ID_MOUSE_X:
return x11->mouse_x;
case RETRO_DEVICE_ID_MOUSE_Y:
return x11->mouse_y;
default:
break;
}
return x_mouse_state(x11, id);
}
static int16_t x_pointer_state(x11_input_t *x11,
unsigned idx, unsigned id, bool screen)
{
bool valid, inside;
int16_t res_x = 0, res_y = 0, res_screen_x = 0, res_screen_y = 0;
if (idx != 0)
return 0;
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;
}
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;
}
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;
}
return 0;
}
static int16_t x_input_state(void *data,
const struct retro_keybind **binds, unsigned port,
unsigned device, unsigned idx, unsigned id)
{
int16_t ret;
x11_input_t *x11 = (x11_input_t*)data;
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], idx, id);
if (!ret)
ret = input_joypad_analog(x11->joypad, port, idx,
id, binds[port]);
return ret;
case RETRO_DEVICE_MOUSE:
return x_mouse_state(x11, id);
case RARCH_DEVICE_MOUSE_SCREEN:
return x_mouse_state_screen(x11, id);
case RETRO_DEVICE_POINTER:
case RARCH_DEVICE_POINTER_SCREEN:
return x_pointer_state(x11, idx, id,
device == RARCH_DEVICE_POINTER_SCREEN);
case RETRO_DEVICE_LIGHTGUN:
return x_lightgun_state(x11, id);
}
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)
{
unsigned mask;
int root_x, root_y, win_x, win_y;
Window root_win, child_win;
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;
/* Somewhat hacky, but seem to do the job. */
if (x11->grab_mouse && video_driver_focus())
{
int mid_w, mid_h;
struct video_viewport vp = {0};
video_driver_viewport_info(&vp);
mid_w = vp.full_width >> 1;
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;
}
}
void x_input_poll_wheel(void *data, XButtonEvent *event, bool latch)
{
x11_input_t *x11 = (x11_input_t*)data;
if (!x11)
return;
switch (event->button)
{
case 4:
x11->mouse_wu = 1;
break;
case 5:
x11->mouse_wd = 1;
break;
}
}
static void x_input_poll(void *data)
{
x11_input_t *x11 = (x11_input_t*)data;
if (video_driver_focus())
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;
if (x11)
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;
if (!x11)
return false;
return input_joypad_set_rumble(x11->joypad, port, effect, strength);
}
static const input_device_driver_t *x_get_joypad_driver(void *data)
{
x11_input_t *x11 = (x11_input_t*)data;
if (!x11)
return NULL;
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;
}
static bool x_keyboard_mapping_is_blocked(void *data)
{
x11_input_t *x11 = (x11_input_t*)data;
if (!x11)
return false;
return x11->blocked;
}
static void x_keyboard_mapping_set_block(void *data, bool value)
{
x11_input_t *x11 = (x11_input_t*)data;
if (!x11)
return;
x11->blocked = value;
}
input_driver_t input_x = {
x_input_init,
x_input_poll,
x_input_state,
x_input_key_pressed,
x_input_meta_key_pressed,
x_input_free,
NULL,
NULL,
x_input_get_capabilities,
"x",
x_grab_mouse,
NULL,
x_set_rumble,
x_get_joypad_driver,
x_keyboard_mapping_is_blocked,
x_keyboard_mapping_set_block,
};
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