mirror of
https://github.com/libretro/RetroArch.git
synced 2024-11-24 16:39:43 +00:00
328 lines
8.4 KiB
C
328 lines
8.4 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2013 - Hans-Kristian Arntzen
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "input_common.h"
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#include "../driver.h"
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#include "../boolean.h"
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#include "../general.h"
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#include <stdint.h>
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#include <stdlib.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/keysym.h>
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typedef struct x11_input
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{
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const rarch_joypad_driver_t *joypad;
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Display *display;
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Window win;
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char state[32];
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bool mouse_l, mouse_r, mouse_m;
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int mouse_x, mouse_y;
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int mouse_last_x, mouse_last_y;
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bool grab_mouse;
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} x11_input_t;
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static void *x_input_init(void)
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{
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if (driver.display_type != RARCH_DISPLAY_X11)
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{
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RARCH_ERR("Currently active window is not an X11 window. Cannot use this driver.\n");
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return NULL;
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}
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x11_input_t *x11 = (x11_input_t*)calloc(1, sizeof(*x11));
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if (!x11)
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return NULL;
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// Borrow the active X window ...
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x11->display = (Display*)driver.video_display;
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x11->win = (Window)driver.video_window;
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x11->joypad = input_joypad_init_driver(g_settings.input.joypad_driver);
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input_init_keyboard_lut(rarch_key_map_x11);
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return x11;
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}
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static bool x_key_pressed(x11_input_t *x11, int key)
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{
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if (key >= RETROK_LAST)
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return false;
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unsigned sym = input_translate_rk_to_keysym((enum retro_key)key);
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int keycode = XKeysymToKeycode(x11->display, sym);
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bool ret = x11->state[keycode >> 3] & (1 << (keycode & 7));
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return ret;
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}
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static bool x_is_pressed(x11_input_t *x11, const struct retro_keybind *binds, unsigned id)
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{
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if (id < RARCH_BIND_LIST_END)
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{
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const struct retro_keybind *bind = &binds[id];
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return bind->valid && x_key_pressed(x11, binds[id].key);
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}
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else
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return false;
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}
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static int16_t x_pressed_analog(x11_input_t *x11, const struct retro_keybind *binds, unsigned index, unsigned id)
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{
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unsigned id_minus = 0;
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unsigned id_plus = 0;
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input_conv_analog_id_to_bind_id(index, id, &id_minus, &id_plus);
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int16_t pressed_minus = x_is_pressed(x11, binds, id_minus) ? -0x7fff : 0;
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int16_t pressed_plus = x_is_pressed(x11, binds, id_plus) ? 0x7fff : 0;
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return pressed_plus + pressed_minus;
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}
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static bool x_bind_button_pressed(void *data, int key)
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{
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x11_input_t *x11 = (x11_input_t*)data;
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return x_is_pressed(x11, g_settings.input.binds[0], key) ||
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input_joypad_pressed(x11->joypad, 0, g_settings.input.binds[0], key);
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}
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static int16_t x_mouse_state(x11_input_t *x11, unsigned id)
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{
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switch (id)
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{
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case RETRO_DEVICE_ID_MOUSE_X:
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return x11->mouse_x - x11->mouse_last_x;
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case RETRO_DEVICE_ID_MOUSE_Y:
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return x11->mouse_y - x11->mouse_last_y;
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case RETRO_DEVICE_ID_MOUSE_LEFT:
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return x11->mouse_l;
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case RETRO_DEVICE_ID_MOUSE_RIGHT:
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return x11->mouse_r;
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default:
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return 0;
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}
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}
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static int16_t x_pointer_state(x11_input_t *x11, unsigned index, unsigned id, bool screen)
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{
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if (index != 0)
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return 0;
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int16_t res_x = 0, res_y = 0, res_screen_x = 0, res_screen_y = 0;
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bool valid = input_translate_coord_viewport(x11->mouse_x, x11->mouse_y,
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&res_x, &res_y, &res_screen_x, &res_screen_y);
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if (!valid)
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return 0;
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if (screen)
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{
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res_x = res_screen_x;
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res_y = res_screen_y;
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}
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bool inside = (res_x >= -0x7fff) && (res_y >= -0x7fff);
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if (!inside)
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return 0;
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switch (id)
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{
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case RETRO_DEVICE_ID_POINTER_X:
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return res_x;
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case RETRO_DEVICE_ID_POINTER_Y:
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return res_y;
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case RETRO_DEVICE_ID_POINTER_PRESSED:
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return x11->mouse_l;
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default:
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return 0;
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}
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}
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static int16_t x_lightgun_state(x11_input_t *x11, unsigned id)
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{
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switch (id)
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{
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case RETRO_DEVICE_ID_LIGHTGUN_X:
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return x11->mouse_x - x11->mouse_last_x;
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case RETRO_DEVICE_ID_LIGHTGUN_Y:
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return x11->mouse_y - x11->mouse_last_y;
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case RETRO_DEVICE_ID_LIGHTGUN_TRIGGER:
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return x11->mouse_l;
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case RETRO_DEVICE_ID_LIGHTGUN_CURSOR:
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return x11->mouse_m;
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case RETRO_DEVICE_ID_LIGHTGUN_TURBO:
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return x11->mouse_r;
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case RETRO_DEVICE_ID_LIGHTGUN_START:
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return x11->mouse_m && x11->mouse_r;
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case RETRO_DEVICE_ID_LIGHTGUN_PAUSE:
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return x11->mouse_m && x11->mouse_l;
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default:
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return 0;
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}
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}
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static int16_t x_input_state(void *data, const struct retro_keybind **binds, unsigned port, unsigned device, unsigned index, unsigned id)
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{
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x11_input_t *x11 = (x11_input_t*)data;
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int16_t ret;
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switch (device)
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{
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case RETRO_DEVICE_JOYPAD:
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return x_is_pressed(x11, binds[port], id) ||
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input_joypad_pressed(x11->joypad, port, binds[port], id);
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case RETRO_DEVICE_KEYBOARD:
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return x_key_pressed(x11, id);
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case RETRO_DEVICE_ANALOG:
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ret = x_pressed_analog(x11, binds[port], index, id);
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if (!ret)
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ret = input_joypad_analog(x11->joypad, port, index, id, binds[port]);
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return ret;
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case RETRO_DEVICE_MOUSE:
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return x_mouse_state(x11, id);
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case RETRO_DEVICE_POINTER:
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case RARCH_DEVICE_POINTER_SCREEN:
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return x_pointer_state(x11, index, id, device == RARCH_DEVICE_POINTER_SCREEN);
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case RETRO_DEVICE_LIGHTGUN:
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return x_lightgun_state(x11, id);
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default:
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return 0;
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}
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}
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static void x_input_free(void *data)
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{
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x11_input_t *x11 = (x11_input_t*)data;
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if (x11->joypad)
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x11->joypad->destroy();
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free(data);
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}
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static void x_input_poll_mouse(x11_input_t *x11)
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{
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Window root_win, child_win;
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int root_x, root_y, win_x, win_y;
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unsigned mask;
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x11->mouse_last_x = x11->mouse_x;
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x11->mouse_last_y = x11->mouse_y;
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XQueryPointer(x11->display,
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x11->win,
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&root_win, &child_win,
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&root_x, &root_y,
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&win_x, &win_y,
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&mask);
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x11->mouse_x = win_x;
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x11->mouse_y = win_y;
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x11->mouse_l = mask & Button1Mask;
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x11->mouse_m = mask & Button2Mask;
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x11->mouse_r = mask & Button3Mask;
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// Somewhat hacky, but seem to do the job.
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if (x11->grab_mouse && video_focus_func())
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{
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struct rarch_viewport vp = {0};
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video_viewport_info_func(&vp);
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int mid_w = vp.full_width >> 1;
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int mid_h = vp.full_height >> 1;
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if (x11->mouse_x != mid_w || x11->mouse_y != mid_h)
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{
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XWarpPointer(x11->display, None,
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x11->win, 0, 0, 0, 0,
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mid_w, mid_h);
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}
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x11->mouse_last_x = mid_w;
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x11->mouse_last_y = mid_h;
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}
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}
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static void x_input_poll(void *data)
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{
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x11_input_t *x11 = (x11_input_t*)data;
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if (video_focus_func())
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XQueryKeymap(x11->display, x11->state);
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else
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memset(x11->state, 0, sizeof(x11->state));
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x_input_poll_mouse(x11);
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input_joypad_poll(x11->joypad);
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}
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static void x_grab_mouse(void *data, bool state)
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{
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x11_input_t *x11 = (x11_input_t*)data;
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x11->grab_mouse = state;
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}
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static bool x_set_rumble(void *data, unsigned port, enum retro_rumble_effect effect, uint16_t strength)
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{
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x11_input_t *x11 = (x11_input_t*)data;
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return input_joypad_set_rumble(x11->joypad, port, effect, strength);
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}
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static const rarch_joypad_driver_t *x_get_joypad_driver(void *data)
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{
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x11_input_t *x11 = (x11_input_t*)data;
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return x11->joypad;
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}
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static uint64_t x_input_get_capabilities(void *data)
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{
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uint64_t caps = 0;
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caps |= (1 << RETRO_DEVICE_JOYPAD);
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caps |= (1 << RETRO_DEVICE_MOUSE);
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caps |= (1 << RETRO_DEVICE_KEYBOARD);
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caps |= (1 << RETRO_DEVICE_LIGHTGUN);
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caps |= (1 << RETRO_DEVICE_POINTER);
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caps |= (1 << RETRO_DEVICE_ANALOG);
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return caps;
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}
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const input_driver_t input_x = {
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x_input_init,
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x_input_poll,
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x_input_state,
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x_bind_button_pressed,
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x_input_free,
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NULL,
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NULL,
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x_input_get_capabilities,
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"x",
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x_grab_mouse,
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x_set_rumble,
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x_get_joypad_driver,
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};
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