Mercurial > sdl-ios-xcode

view src/video/svga/SDL_svgaevents.c @ 4170:092c0bc69155 SDL-1.2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fixed bug #618 Description From Tim Angus 2008-08-30 12:23:56 (-) [reply] As we all know SDL 1.2 doesn't handle dead keys well since one key press potentially equals two (or more) characters. For example, on many layouts, keying <backquote>,<space> results in <no character>,<backquote><space>. Since the unicode member of the SDL_keysym struct only has room for one character, only one can be returned. On Linux, the first character is returned. On Windows however, unless the exact number of characters generated by the keypress is 1, nothing is returned. The following patch addresses this inconsistency. Updated patch which includes a further fix to the handling of the numpad when numlock is on. This further fix is courtesy Amanieu d'Antras.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 13 Apr 2009 08:42:09 +0000
parents a1b03ba2fcd0
children
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

/* Handle the event stream, converting X11 events into SDL events */

#include <vga.h>
#include <vgamouse.h>
#include <vgakeyboard.h>
#if defined(__LINUX__)
#include <linux/kd.h>
#include <linux/keyboard.h>
#elif defined(__FREEBSD__)
#include <sys/kbio.h>
#else
#error You must choose your operating system here
#endif

#include "../../events/SDL_sysevents.h"
#include "../../events/SDL_events_c.h"
#include "SDL_svgavideo.h"
#include "SDL_svgaevents_c.h"

/* The translation tables from a console scancode to a SDL keysym */
#if defined(linux)
#define NUM_VGAKEYMAPS	(1<<KG_CAPSSHIFT)
static Uint16 vga_keymap[NUM_VGAKEYMAPS][NR_KEYS];
#elif defined(__FREEBSD__)
/* FIXME: Free the keymap when we shut down the video mode */
static keymap_t *vga_keymap = NULL;
#else
#error You must choose your operating system here
#endif
static SDLKey keymap[128];
static SDL_keysym *TranslateKey(int scancode, SDL_keysym *keysym);

/* Ugh, we have to duplicate the kernel's keysym mapping code...
   Oh, it's not so bad. :-)

   FIXME: Add keyboard LED handling code
 */
#if defined(linux)
int SVGA_initkeymaps(int fd)
{
	struct kbentry entry;
	int map, i;

	/* Load all the keysym mappings */
	for ( map=0; map<NUM_VGAKEYMAPS; ++map ) {
		SDL_memset(vga_keymap[map], 0, NR_KEYS*sizeof(Uint16));
		for ( i=0; i<NR_KEYS; ++i ) {
			entry.kb_table = map;
			entry.kb_index = i;
			if ( ioctl(fd, KDGKBENT, &entry) == 0 ) {
				/* The "Enter" key is a special case */
				if ( entry.kb_value == K_ENTER ) {
					entry.kb_value = K(KT_ASCII,13);
				}
				/* Handle numpad specially as well */
				if ( KTYP(entry.kb_value) == KT_PAD ) {
				    switch ( entry.kb_value ) {
					case K_P0:
					case K_P1:
					case K_P2:
					case K_P3:
					case K_P4:
					case K_P5:
					case K_P6:
					case K_P7:
					case K_P8:
					case K_P9:
					    vga_keymap[map][i]=entry.kb_value;
					    vga_keymap[map][i]+= '0';
					    break;
                                        case K_PPLUS:
					    vga_keymap[map][i]=K(KT_ASCII,'+');
					    break;
                                        case K_PMINUS:
					    vga_keymap[map][i]=K(KT_ASCII,'-');
					    break;
                                        case K_PSTAR:
					    vga_keymap[map][i]=K(KT_ASCII,'*');
					    break;
                                        case K_PSLASH:
					    vga_keymap[map][i]=K(KT_ASCII,'/');
					    break;
                                        case K_PENTER:
					    vga_keymap[map][i]=K(KT_ASCII,'\r');
					    break;
                                        case K_PCOMMA:
					    vga_keymap[map][i]=K(KT_ASCII,',');
					    break;
                                        case K_PDOT:
					    vga_keymap[map][i]=K(KT_ASCII,'.');
					    break;
					default:
					    break;
				    }
				}
				/* Do the normal key translation */
				if ( (KTYP(entry.kb_value) == KT_LATIN) ||
				     (KTYP(entry.kb_value) == KT_ASCII) ||
				     (KTYP(entry.kb_value) == KT_LETTER) ) {
					vga_keymap[map][i] = entry.kb_value;
				}
			}
		}
	}
	return(0);
}
#elif defined(__FREEBSD__)
int SVGA_initkeymaps(int fd)
{
	vga_keymap = SDL_malloc(sizeof(keymap_t));
	if ( ! vga_keymap ) {
		SDL_OutOfMemory();
		return(-1);
	}
	if (ioctl(fd, GIO_KEYMAP, vga_keymap) == -1) {
		SDL_free(vga_keymap);
		vga_keymap = NULL;
		SDL_SetError("Unable to get keyboard map");
		return(-1);
	}
	return(0);
}
#else
#error You must choose your operating system here
#endif

int posted = 0;

void SVGA_mousecallback(int button, int dx, int dy,
                          int u1,int u2,int u3, int u4)
{
	if ( dx || dy ) {
		posted += SDL_PrivateMouseMotion(0, 1, dx, dy);
	}
	if ( button & MOUSE_LEFTBUTTON ) {
		if ( !(SDL_GetMouseState(NULL, NULL) & SDL_BUTTON(1)) ) {
			posted += SDL_PrivateMouseButton(SDL_PRESSED, 1, 0, 0);
		}
	} else {
		if ( (SDL_GetMouseState(NULL, NULL) & SDL_BUTTON(1)) ) {
			posted += SDL_PrivateMouseButton(SDL_RELEASED, 1, 0, 0);
		}
	}
	if ( button & MOUSE_MIDDLEBUTTON ) {
		if ( !(SDL_GetMouseState(NULL, NULL) & SDL_BUTTON(2)) ) {
			posted += SDL_PrivateMouseButton(SDL_PRESSED, 2, 0, 0);
		}
	} else {
		if ( (SDL_GetMouseState(NULL, NULL) & SDL_BUTTON(2)) ) {
			posted += SDL_PrivateMouseButton(SDL_RELEASED, 2, 0, 0);
		}
	}
	if ( button & MOUSE_RIGHTBUTTON ) {
		if ( !(SDL_GetMouseState(NULL, NULL) & SDL_BUTTON(3)) ) {
			posted += SDL_PrivateMouseButton(SDL_PRESSED, 3, 0, 0);
		}
	} else {
		if ( (SDL_GetMouseState(NULL, NULL) & SDL_BUTTON(3)) ) {
			posted += SDL_PrivateMouseButton(SDL_RELEASED, 3, 0, 0);
		}
	}
}

void SVGA_keyboardcallback(int scancode, int pressed)
{
	SDL_keysym keysym;

	if ( pressed ) {
		posted += SDL_PrivateKeyboard(SDL_PRESSED,
			    TranslateKey(scancode, &keysym));
	} else {
		posted += SDL_PrivateKeyboard(SDL_RELEASED,
			    TranslateKey(scancode, &keysym));
	}
}

void SVGA_PumpEvents(_THIS)
{
	do {
		posted = 0;
		mouse_update();
		keyboard_update();
	} while ( posted );
}

void SVGA_InitOSKeymap(_THIS)
{
	int i;

	/* Initialize the BeOS key translation table */
	for ( i=0; i<SDL_arraysize(keymap); ++i )
		keymap[i] = SDLK_UNKNOWN;

	keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
	keymap[SCANCODE_1] = SDLK_1;
	keymap[SCANCODE_2] = SDLK_2;
	keymap[SCANCODE_3] = SDLK_3;
	keymap[SCANCODE_4] = SDLK_4;
	keymap[SCANCODE_5] = SDLK_5;
	keymap[SCANCODE_6] = SDLK_6;
	keymap[SCANCODE_7] = SDLK_7;
	keymap[SCANCODE_8] = SDLK_8;
	keymap[SCANCODE_9] = SDLK_9;
	keymap[SCANCODE_0] = SDLK_0;
	keymap[SCANCODE_MINUS] = SDLK_MINUS;
	keymap[SCANCODE_EQUAL] = SDLK_EQUALS;
	keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
	keymap[SCANCODE_TAB] = SDLK_TAB;
	keymap[SCANCODE_Q] = SDLK_q;
	keymap[SCANCODE_W] = SDLK_w;
	keymap[SCANCODE_E] = SDLK_e;
	keymap[SCANCODE_R] = SDLK_r;
	keymap[SCANCODE_T] = SDLK_t;
	keymap[SCANCODE_Y] = SDLK_y;
	keymap[SCANCODE_U] = SDLK_u;
	keymap[SCANCODE_I] = SDLK_i;
	keymap[SCANCODE_O] = SDLK_o;
	keymap[SCANCODE_P] = SDLK_p;
	keymap[SCANCODE_BRACKET_LEFT] = SDLK_LEFTBRACKET;
	keymap[SCANCODE_BRACKET_RIGHT] = SDLK_RIGHTBRACKET;
	keymap[SCANCODE_ENTER] = SDLK_RETURN;
	keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
	keymap[SCANCODE_A] = SDLK_a;
	keymap[SCANCODE_S] = SDLK_s;
	keymap[SCANCODE_D] = SDLK_d;
	keymap[SCANCODE_F] = SDLK_f;
	keymap[SCANCODE_G] = SDLK_g;
	keymap[SCANCODE_H] = SDLK_h;
	keymap[SCANCODE_J] = SDLK_j;
	keymap[SCANCODE_K] = SDLK_k;
	keymap[SCANCODE_L] = SDLK_l;
	keymap[SCANCODE_SEMICOLON] = SDLK_SEMICOLON;
	keymap[SCANCODE_APOSTROPHE] = SDLK_QUOTE;
	keymap[SCANCODE_GRAVE] = SDLK_BACKQUOTE;
	keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
	keymap[SCANCODE_BACKSLASH] = SDLK_BACKSLASH;
	keymap[SCANCODE_Z] = SDLK_z;
	keymap[SCANCODE_X] = SDLK_x;
	keymap[SCANCODE_C] = SDLK_c;
	keymap[SCANCODE_V] = SDLK_v;
	keymap[SCANCODE_B] = SDLK_b;
	keymap[SCANCODE_N] = SDLK_n;
	keymap[SCANCODE_M] = SDLK_m;
	keymap[SCANCODE_COMMA] = SDLK_COMMA;
	keymap[SCANCODE_PERIOD] = SDLK_PERIOD;
	keymap[SCANCODE_SLASH] = SDLK_SLASH;
	keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
	keymap[SCANCODE_KEYPADMULTIPLY] = SDLK_KP_MULTIPLY;
	keymap[SCANCODE_LEFTALT] = SDLK_LALT;
	keymap[SCANCODE_SPACE] = SDLK_SPACE;
	keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
	keymap[SCANCODE_F1] = SDLK_F1;
	keymap[SCANCODE_F2] = SDLK_F2;
	keymap[SCANCODE_F3] = SDLK_F3;
	keymap[SCANCODE_F4] = SDLK_F4;
	keymap[SCANCODE_F5] = SDLK_F5;
	keymap[SCANCODE_F6] = SDLK_F6;
	keymap[SCANCODE_F7] = SDLK_F7;
	keymap[SCANCODE_F8] = SDLK_F8;
	keymap[SCANCODE_F9] = SDLK_F9;
	keymap[SCANCODE_F10] = SDLK_F10;
	keymap[SCANCODE_NUMLOCK] = SDLK_NUMLOCK;
	keymap[SCANCODE_SCROLLLOCK] = SDLK_SCROLLOCK;
	keymap[SCANCODE_KEYPAD7] = SDLK_KP7;
	keymap[SCANCODE_CURSORUPLEFT] = SDLK_KP7;
	keymap[SCANCODE_KEYPAD8] = SDLK_KP8;
	keymap[SCANCODE_CURSORUP] = SDLK_KP8;
	keymap[SCANCODE_KEYPAD9] = SDLK_KP9;
	keymap[SCANCODE_CURSORUPRIGHT] = SDLK_KP9;
	keymap[SCANCODE_KEYPADMINUS] = SDLK_KP_MINUS;
	keymap[SCANCODE_KEYPAD4] = SDLK_KP4;
	keymap[SCANCODE_CURSORLEFT] = SDLK_KP4;
	keymap[SCANCODE_KEYPAD5] = SDLK_KP5;
	keymap[SCANCODE_KEYPAD6] = SDLK_KP6;
	keymap[SCANCODE_CURSORRIGHT] = SDLK_KP6;
	keymap[SCANCODE_KEYPADPLUS] = SDLK_KP_PLUS;
	keymap[SCANCODE_KEYPAD1] = SDLK_KP1;
	keymap[SCANCODE_CURSORDOWNLEFT] = SDLK_KP1;
	keymap[SCANCODE_KEYPAD2] = SDLK_KP2;
	keymap[SCANCODE_CURSORDOWN] = SDLK_KP2;
	keymap[SCANCODE_KEYPAD3] = SDLK_KP3;
	keymap[SCANCODE_CURSORDOWNRIGHT] = SDLK_KP3;
	keymap[SCANCODE_KEYPAD0] = SDLK_KP0;
	keymap[SCANCODE_KEYPADPERIOD] = SDLK_KP_PERIOD;
	keymap[SCANCODE_LESS] = SDLK_LESS;
	keymap[SCANCODE_F11] = SDLK_F11;
	keymap[SCANCODE_F12] = SDLK_F12;
	keymap[SCANCODE_KEYPADENTER] = SDLK_KP_ENTER;
	keymap[SCANCODE_RIGHTCONTROL] = SDLK_RCTRL;
	keymap[SCANCODE_CONTROL] = SDLK_RCTRL;
	keymap[SCANCODE_KEYPADDIVIDE] = SDLK_KP_DIVIDE;
	keymap[SCANCODE_PRINTSCREEN] = SDLK_PRINT;
	keymap[SCANCODE_RIGHTALT] = SDLK_RALT;
	keymap[SCANCODE_BREAK] = SDLK_BREAK;
	keymap[SCANCODE_BREAK_ALTERNATIVE] = SDLK_UNKNOWN;
	keymap[SCANCODE_HOME] = SDLK_HOME;
	keymap[SCANCODE_CURSORBLOCKUP] = SDLK_UP;
	keymap[SCANCODE_PAGEUP] = SDLK_PAGEUP;
	keymap[SCANCODE_CURSORBLOCKLEFT] = SDLK_LEFT;
	keymap[SCANCODE_CURSORBLOCKRIGHT] = SDLK_RIGHT;
	keymap[SCANCODE_END] = SDLK_END;
	keymap[SCANCODE_CURSORBLOCKDOWN] = SDLK_DOWN;
	keymap[SCANCODE_PAGEDOWN] = SDLK_PAGEDOWN;
	keymap[SCANCODE_INSERT] = SDLK_INSERT;
	keymap[SCANCODE_REMOVE] = SDLK_DELETE;
	keymap[119] = SDLK_PAUSE;
	keymap[SCANCODE_RIGHTWIN] = SDLK_RSUPER;
	keymap[SCANCODE_LEFTWIN] = SDLK_LSUPER;
	keymap[127] = SDLK_MENU;
}

#if defined(linux)
static SDL_keysym *TranslateKey(int scancode, SDL_keysym *keysym)
{
	/* Set the keysym information */
	keysym->scancode = scancode;
	keysym->sym = keymap[scancode];
	keysym->mod = KMOD_NONE;

	/* If UNICODE is on, get the UNICODE value for the key */
	keysym->unicode = 0;
	if ( SDL_TranslateUNICODE ) {
		int map;
		SDLMod modstate;

		modstate = SDL_GetModState();
		map = 0;
		if ( modstate & KMOD_SHIFT ) {
			map |= (1<<KG_SHIFT);
		}
		if ( modstate & KMOD_CTRL ) {
			map |= (1<<KG_CTRL);
		}
		if ( modstate & KMOD_ALT ) {
			map |= (1<<KG_ALT);
		}
		if ( modstate & KMOD_MODE ) {
			map |= (1<<KG_ALTGR);
		}
		if ( KTYP(vga_keymap[map][scancode]) == KT_LETTER ) {
			if ( modstate & KMOD_CAPS ) {
				map ^= (1<<KG_SHIFT);
			}
		}
		if ( KTYP(vga_keymap[map][scancode]) == KT_PAD ) {
			if ( modstate & KMOD_NUM ) {
				keysym->unicode=KVAL(vga_keymap[map][scancode]);
			}
		} else {
			keysym->unicode = KVAL(vga_keymap[map][scancode]);
		}
	}
	return(keysym);
}
#elif defined(__FREEBSD__)
static SDL_keysym *TranslateKey(int scancode, SDL_keysym *keysym)
{
	/* Set the keysym information */
	keysym->scancode = scancode;
	keysym->sym = keymap[scancode];
	keysym->mod = KMOD_NONE;

	/* If UNICODE is on, get the UNICODE value for the key */
	keysym->unicode = 0;
	if ( SDL_TranslateUNICODE && vga_keymap ) {
		int map;
		SDLMod modstate;

		modstate = SDL_GetModState();
		map = 0;
		if ( modstate & KMOD_SHIFT ) {
			map += 1;
		}
		if ( modstate & KMOD_CTRL ) {
			map += 2;
		}
		if ( modstate & KMOD_ALT ) {
			map += 4;
		}
		if ( !(vga_keymap->key[scancode].spcl & (0x80 >> map)) ) {
			keysym->unicode = vga_keymap->key[scancode].map[map];
		}

	}
	return(keysym);
}
#else
#error You must choose your operating system here
#endif