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view src/video/ggi/SDL_ggievents.c @ 4170:092c0bc69155 SDL-1.2

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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
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/*
    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 GGI events into SDL events */

#include <sys/types.h>
#include <sys/time.h>
#include <unistd.h>
#include <fcntl.h>
#include <termios.h>

#include <ggi/keyboard.h>

#include "SDL_ggikeys.h"

#include "SDL.h"
#include "../SDL_sysvideo.h"
#include "../../events/SDL_sysevents.h"
#include "../../events/SDL_events_c.h"
#include "SDL_ggivideo.h"
#include "SDL_ggievents_c.h"

/* The translation tables from a GGI keycode to a SDL keysym */
static SDLKey keymap[128];
static SDL_keysym *GGI_TranslateKey(ggi_event *ev, SDL_keysym *keysym);

static int posted = 0;

void GGI_PumpEvents(_THIS)
{
	struct timeval *tvp, tv = { 0, 0 };
	ggi_event ev;

	tvp = &tv;
	
/*	ggiFlush(VIS); */
	
	while (ggiEventPoll(VIS, emAll, tvp))
/*	while (ggiEventPoll(VIS, (emKeyboard | emPointer | emCommand), tvp)) */
	{
		int queueevent_mouse = 0, queueevent_kbd = 0;
		static int buttons = 0;
		static int mouse_x = 0, mouse_y = 0, mouse_z = 0;
		int x = 0, y = 0, z = 0, rx = 0, ry = 0, rz = 0;
		int pressed_mouse, pressed_kbd;
		SDL_keysym keysym;
		
		posted = 0;

		/* FIXME: We do not actually want all events, only
		 * mouse and keyboard events.  Having to handle all
                 * events will slow things down.  */

		ggiEventRead(VIS, &ev, emAll);
/*		ggiEventRead(VIS, &ev, (emKeyboard | emPointer | emCommand)); */
		
		switch (ev.any.type)
		{
			case evPtrRelative:
			x = ev.pmove.x;
			y = ev.pmove.y;
			z = ev.pmove.wheel;
			posted += SDL_PrivateMouseMotion(0, 1, x, y);
			break;
			case evPtrAbsolute:
			if (mouse_x != ev.pmove.x || mouse_y != ev.pmove.y || mouse_z != ev.pmove.wheel)
			{
				x = ev.pmove.x - mouse_x;
				y = ev.pmove.y - mouse_y;
				z = ev.pmove.wheel - mouse_z;
				mouse_x = ev.pmove.x;
				mouse_y = ev.pmove.y;
				mouse_z = ev.pmove.wheel;
				posted += SDL_PrivateMouseMotion(0, 1, x, y);
			} 
			break;
			case evPtrButtonPress:
			posted += SDL_PrivateMouseButton(SDL_PRESSED, ev.pbutton.button, 0, 0);
			break;
			case evPtrButtonRelease:
			posted += SDL_PrivateMouseButton(SDL_RELEASED, ev.pbutton.button, 0, 0);
			break;
			case evKeyPress:
			case evKeyRepeat:
			posted += SDL_PrivateKeyboard(SDL_PRESSED, GGI_TranslateKey(&ev, &keysym));
			break;
			case evKeyRelease:
			posted += SDL_PrivateKeyboard(SDL_RELEASED, GGI_TranslateKey(&ev, &keysym));
			break;
			case evCommand:
			fprintf(stderr, "Command event %x recieved\n", ev.cmd.code);
			break;
 			default:
			fprintf(stderr, "Unhandled event type %d\n", ev.any.type);
			break;
		}
	}

}

void GGI_InitOSKeymap(_THIS)
{
	int i;
	
	/* Initialize the GGI 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;
}



static SDL_keysym *GGI_TranslateKey(gii_event *ev, SDL_keysym *keysym)
{
	/* Set the keysym information */
	keysym->scancode = ev->key.button;
	keysym->sym = keymap[ev->key.button];
	keysym->mod = KMOD_NONE;

	/* If UNICODE is on, get the UNICODE value for the key */
	keysym->unicode = 0;
	if (SDL_TranslateUNICODE) 
	{
		keysym->unicode = GII_UNICODE(ev->key.sym);
	}

	return keysym;
}