/*

Simple DirectMedia Layer

Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>

This software is provided 'as-is', without any express or implied

warranty. In no event will the authors be held liable for any damages

arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,

including commercial applications, and to alter it and redistribute it

freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not

claim that you wrote the original software. If you use this software

in a product, an acknowledgment in the product documentation would be

appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must not be

misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.

*/

#include "SDL_config.h"

#if SDL_VIDEO_DRIVER_X11

#include "SDL_x11video.h"

#include "../../events/SDL_keyboard_c.h"

#include "../../events/scancodes_darwin.h"

#include "../../events/scancodes_xfree86.h"

#include <X11/keysym.h>

#include "imKStoUCS.h"

/* *INDENT-OFF* */

static const struct {

KeySym keysym;

SDL_Keycode sdlkey;

} KeySymToSDLKey[] = {

{ XK_Return, SDLK_RETURN },

{ XK_Escape, SDLK_ESCAPE },

{ XK_BackSpace, SDLK_BACKSPACE },

{ XK_Tab, SDLK_TAB },

{ XK_Caps_Lock, SDLK_CAPSLOCK },

{ XK_F1, SDLK_F1 },

{ XK_F2, SDLK_F2 },

{ XK_F3, SDLK_F3 },

{ XK_F4, SDLK_F4 },

{ XK_F5, SDLK_F5 },

{ XK_F6, SDLK_F6 },

{ XK_F7, SDLK_F7 },

{ XK_F8, SDLK_F8 },

{ XK_F9, SDLK_F9 },

{ XK_F10, SDLK_F10 },

{ XK_F11, SDLK_F11 },

{ XK_F12, SDLK_F12 },

{ XK_Print, SDLK_PRINTSCREEN },

{ XK_Scroll_Lock, SDLK_SCROLLLOCK },

{ XK_Pause, SDLK_PAUSE },

{ XK_Insert, SDLK_INSERT },

{ XK_Home, SDLK_HOME },

{ XK_Prior, SDLK_PAGEUP },

{ XK_Delete, SDLK_DELETE },

{ XK_End, SDLK_END },

{ XK_Next, SDLK_PAGEDOWN },

{ XK_Right, SDLK_RIGHT },

{ XK_Left, SDLK_LEFT },

{ XK_Down, SDLK_DOWN },

{ XK_Up, SDLK_UP },

{ XK_Num_Lock, SDLK_NUMLOCKCLEAR },

{ XK_KP_Divide, SDLK_KP_DIVIDE },

{ XK_KP_Multiply, SDLK_KP_MULTIPLY },

{ XK_KP_Subtract, SDLK_KP_MINUS },

{ XK_KP_Add, SDLK_KP_PLUS },

{ XK_KP_Enter, SDLK_KP_ENTER },

{ XK_KP_Delete, SDLK_KP_PERIOD },

{ XK_KP_End, SDLK_KP_1 },

{ XK_KP_Down, SDLK_KP_2 },

{ XK_KP_Next, SDLK_KP_3 },

{ XK_KP_Left, SDLK_KP_4 },

{ XK_KP_Begin, SDLK_KP_5 },

{ XK_KP_Right, SDLK_KP_6 },

{ XK_KP_Home, SDLK_KP_7 },

{ XK_KP_Up, SDLK_KP_8 },

{ XK_KP_Prior, SDLK_KP_9 },

{ XK_KP_Insert, SDLK_KP_0 },

{ XK_KP_Decimal, SDLK_KP_PERIOD },

{ XK_KP_1, SDLK_KP_1 },

{ XK_KP_2, SDLK_KP_2 },

{ XK_KP_3, SDLK_KP_3 },

{ XK_KP_4, SDLK_KP_4 },

{ XK_KP_5, SDLK_KP_5 },

{ XK_KP_6, SDLK_KP_6 },

{ XK_KP_7, SDLK_KP_7 },

{ XK_KP_8, SDLK_KP_8 },

{ XK_KP_9, SDLK_KP_9 },

{ XK_KP_0, SDLK_KP_0 },

{ XK_KP_Decimal, SDLK_KP_PERIOD },

{ XK_Hyper_R, SDLK_APPLICATION },

{ XK_KP_Equal, SDLK_KP_EQUALS },

{ XK_F13, SDLK_F13 },

{ XK_F14, SDLK_F14 },

{ XK_F15, SDLK_F15 },

{ XK_F16, SDLK_F16 },

{ XK_F17, SDLK_F17 },

{ XK_F18, SDLK_F18 },

{ XK_F19, SDLK_F19 },

{ XK_F20, SDLK_F20 },

{ XK_F21, SDLK_F21 },

{ XK_F22, SDLK_F22 },

{ XK_F23, SDLK_F23 },

{ XK_F24, SDLK_F24 },

{ XK_Execute, SDLK_EXECUTE },

{ XK_Help, SDLK_HELP },

{ XK_Menu, SDLK_MENU },

{ XK_Select, SDLK_SELECT },

{ XK_Cancel, SDLK_STOP },

{ XK_Redo, SDLK_AGAIN },

{ XK_Undo, SDLK_UNDO },

{ XK_Find, SDLK_FIND },

{ XK_KP_Separator, SDLK_KP_COMMA },

{ XK_Sys_Req, SDLK_SYSREQ },

{ XK_Control_L, SDLK_LCTRL },

{ XK_Shift_L, SDLK_LSHIFT },

{ XK_Alt_L, SDLK_LALT },

{ XK_Meta_L, SDLK_LGUI },

{ XK_Super_L, SDLK_LGUI },

{ XK_Control_R, SDLK_RCTRL },

{ XK_Shift_R, SDLK_RSHIFT },

{ XK_Alt_R, SDLK_RALT },

{ XK_Meta_R, SDLK_RGUI },

{ XK_Super_R, SDLK_RGUI },

{ XK_Mode_switch, SDLK_MODE },

};

static const struct

{

const SDL_Scancode const *table;

int table_size;

} scancode_set[] = {

{ darwin_scancode_table, SDL_arraysize(darwin_scancode_table) },

{ xfree86_scancode_table, SDL_arraysize(xfree86_scancode_table) },

{ xfree86_scancode_table2, SDL_arraysize(xfree86_scancode_table2) },

};

/* *INDENT-OFF* */

static SDL_Keycode

X11_KeyCodeToSDLKey(Display *display, KeyCode keycode)

{

KeySym keysym;

unsigned int ucs4;

int i;

#if SDL_VIDEO_DRIVER_X11_HAS_XKBKEYCODETOKEYSYM

keysym = XkbKeycodeToKeysym(display, keycode, 0, 0);

#else

keysym = XKeycodeToKeysym(display, keycode, 0);

#endif

if (keysym == NoSymbol) {

return SDLK_UNKNOWN;

}

ucs4 = X11_KeySymToUcs4(keysym);

if (ucs4) {

return (SDL_Keycode) ucs4;

}

for (i = 0; i < SDL_arraysize(KeySymToSDLKey); ++i) {

if (keysym == KeySymToSDLKey[i].keysym) {

return KeySymToSDLKey[i].sdlkey;

}

}

return SDLK_UNKNOWN;

}

int

X11_InitKeyboard(_THIS)

{

SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;

int i, j;

int min_keycode, max_keycode;

struct {

SDL_Scancode scancode;

KeySym keysym;

int value;

} fingerprint[] = {

{ SDL_SCANCODE_HOME, XK_Home, 0 },

{ SDL_SCANCODE_PAGEUP, XK_Prior, 0 },

{ SDL_SCANCODE_PAGEDOWN, XK_Next, 0 },

};

SDL_bool fingerprint_detected;

XAutoRepeatOn(data->display);

/* Try to determine which scancodes are being used based on fingerprint */

fingerprint_detected = SDL_FALSE;

XDisplayKeycodes(data->display, &min_keycode, &max_keycode);

for (i = 0; i < SDL_arraysize(fingerprint); ++i) {

fingerprint[i].value =

XKeysymToKeycode(data->display, fingerprint[i].keysym) -

min_keycode;

}

for (i = 0; i < SDL_arraysize(scancode_set); ++i) {

/* Make sure the scancode set isn't too big */

if ((max_keycode - min_keycode + 1) <= scancode_set[i].table_size) {

continue;

}

for (j = 0; j < SDL_arraysize(fingerprint); ++j) {

if (fingerprint[j].value < 0

|| fingerprint[j].value >= scancode_set[i].table_size) {

break;

}

if (scancode_set[i].table[fingerprint[j].value] !=

fingerprint[j].scancode) {

break;

}

}

if (j == SDL_arraysize(fingerprint)) {

#ifdef DEBUG_KEYBOARD

printf("Using scancode set %d, min_keycode = %d, max_keycode = %d, table_size = %d\n", i, min_keycode, max_keycode, scancode_set[i].table_size);

#endif

SDL_memcpy(&data->key_layout[min_keycode], scancode_set[i].table,

sizeof(SDL_Scancode) * scancode_set[i].table_size);

fingerprint_detected = SDL_TRUE;

break;

}

}

if (!fingerprint_detected) {

SDL_Keycode keymap[SDL_NUM_SCANCODES];

printf

("Keyboard layout unknown, please send the following to the SDL mailing list (sdl@libsdl.org):\n");

/* Determine key_layout - only works on US QWERTY layout */

SDL_GetDefaultKeymap(keymap);

for (i = min_keycode; i <= max_keycode; ++i) {

KeySym sym;

#if SDL_VIDEO_DRIVER_X11_HAS_XKBKEYCODETOKEYSYM

sym = XkbKeycodeToKeysym(data->display, i, 0, 0);

#else

sym = XKeycodeToKeysym(data->display, i, 0);

#endif

if (sym != NoSymbol) {

SDL_Keycode key;

printf("code = %d, sym = 0x%X (%s) ", i - min_keycode,

(unsigned int) sym, XKeysymToString(sym));

key = X11_KeyCodeToSDLKey(data->display, i);

for (j = 0; j < SDL_arraysize(keymap); ++j) {

if (keymap[j] == key) {

data->key_layout[i] = (SDL_Scancode) j;

break;

}

}

if (j == SDL_arraysize(keymap)) {

printf("scancode not found\n");

} else {

printf("scancode = %d (%s)\n", j, SDL_GetScancodeName(j));

}

}

}

}

X11_UpdateKeymap(_this);

SDL_SetScancodeName(SDL_SCANCODE_APPLICATION, "Menu");

return 0;

}

void

X11_UpdateKeymap(_THIS)

{

SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;

int i;

SDL_Scancode scancode;

SDL_Keycode keymap[SDL_NUM_SCANCODES];

SDL_zero(keymap);

for (i = 0; i < SDL_arraysize(data->key_layout); i++) {

/* Make sure this is a valid scancode */

scancode = data->key_layout[i];

if (scancode == SDL_SCANCODE_UNKNOWN) {

continue;

}

keymap[scancode] = X11_KeyCodeToSDLKey(data->display, (KeyCode)i);

}

SDL_SetKeymap(0, keymap, SDL_NUM_SCANCODES);

}

void

X11_QuitKeyboard(_THIS)

{

}

#endif /* SDL_VIDEO_DRIVER_X11 */

/* vi: set ts=4 sw=4 expandtab: */