Mercurial > sdl-ios-xcode
view src/video/ataricommon/SDL_ikbdevents.c @ 1554:0ca607a5d173
Fixed bug #84
Date: Sun, 23 Oct 2005 16:39:03 +0200
From: "A. Schmid" <sahib@phreaker.net>
Subject: [SDL] no software surfaces with svgalib driver?
Hi,
I noticed that the SDL (1.2.9) svgalib driver only makes use of linear
addressable (framebuffer) video modes. On older systems (like one of
mine), linear addressable modes are often not available.
Especially for cards with VESA VBE < 2.0 the svgalib vesa driver is
unusable, since VESA only supports framebuffering for VBE 2.0 and later.
The changes necessary to add support for software surfaces seem to be
relatively small. I only had to hack src/video/svga/SDL_svgavideo.c (see
attached patch). The code worked fine for me, but it is no more than a
proof of concept and should be reviewed (probably has a memory leak when
switching modes). It also uses the vgagl library (included in the
svgalib package) and needs to be linked against it.
-Alex
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 19 Mar 2006 12:04:40 +0000 |
parents | d910939febfa |
children | 782fd950bd46 c121d94672cb f1816773a309 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2006 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" /* * Atari keyboard events manager, using hardware IKBD * * Patrice Mandin */ /* Mint includes */ #include <mint/osbind.h> #include "../../events/SDL_sysevents.h" #include "../../events/SDL_events_c.h" #include "SDL_atarikeys.h" #include "SDL_atarievents_c.h" #include "SDL_ikbdinterrupt_s.h" /* Special keys state */ enum { K_RSHIFT=0, K_LSHIFT, K_CTRL, K_ALT, K_CAPSLOCK, K_CLRHOME, K_INSERT }; #define ATARIBIOS_MAXKEYS 128 #define KEY_PRESSED 0xff #define KEY_UNDEFINED 0x80 #define KEY_RELEASED 0x00 /* The translation tables from a console scancode to a SDL keysym */ #define KT_NOCHANGE -1 enum { KT_UNSHIFT=0, KT_SHIFT=1, KT_CAPS=2 }; static Uint16 atari_prevmouseb; /* save state of mouse buttons */ static int caps_state; /* caps lock state */ _KEYTAB *curtables; static unsigned char *tab_unshift, *tab_shift, *tab_caps; static SDLKey keymap[ATARIBIOS_MAXKEYS]; static SDL_keysym *TranslateKey(int scancode, int numkeytable, SDL_keysym *keysym, SDL_bool pressed); void AtariIkbd_InitOSKeymap(_THIS) { int i; SDL_memset(SDL_AtariIkbd_keyboard, KEY_UNDEFINED, ATARIBIOS_MAXKEYS); /* Initialize keymap */ for ( i=0; i<sizeof(keymap); i++ ) keymap[i] = SDLK_UNKNOWN; /* Functions keys */ for ( i = 0; i<10; i++ ) keymap[SCANCODE_F1 + i] = SDLK_F1+i; /* Cursor keypad */ keymap[SCANCODE_HELP] = SDLK_HELP; keymap[SCANCODE_UNDO] = SDLK_UNDO; keymap[SCANCODE_INSERT] = SDLK_INSERT; keymap[SCANCODE_CLRHOME] = SDLK_HOME; keymap[SCANCODE_UP] = SDLK_UP; keymap[SCANCODE_DOWN] = SDLK_DOWN; keymap[SCANCODE_RIGHT] = SDLK_RIGHT; keymap[SCANCODE_LEFT] = SDLK_LEFT; /* Special keys */ keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE; keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE; keymap[SCANCODE_TAB] = SDLK_TAB; keymap[SCANCODE_ENTER] = SDLK_RETURN; keymap[SCANCODE_DELETE] = SDLK_DELETE; keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL; keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT; keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT; keymap[SCANCODE_LEFTALT] = SDLK_LALT; keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK; /* Read XBIOS tables for scancode -> ascii translation */ curtables=Keytbl(KT_NOCHANGE, KT_NOCHANGE, KT_NOCHANGE); tab_unshift=curtables->unshift; tab_shift=curtables->shift; tab_caps=curtables->caps; /* Set Caps lock initial state */ caps_state=(Kbshift(-1) & (1<<K_CAPSLOCK)); /* Now install our handler */ SDL_AtariIkbd_mouseb = SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0; atari_prevmouseb = 0; Supexec(SDL_AtariIkbdInstall); } static int atari_GetButton(int button) { switch(button) { case 0: return SDL_BUTTON_RIGHT; break; case 1: default: return SDL_BUTTON_LEFT; break; } } void AtariIkbd_PumpEvents(_THIS) { int i; SDL_keysym keysym; int specialkeys; /*--- Send keyboard events ---*/ /* Update caps lock state */ if (SDL_AtariIkbd_keyboard[SCANCODE_CAPSLOCK]==KEY_PRESSED) { caps_state ^= 1; } /* Choose the translation table */ specialkeys=KT_UNSHIFT; if ((SDL_AtariIkbd_keyboard[SCANCODE_LEFTSHIFT]==KEY_PRESSED) || (SDL_AtariIkbd_keyboard[SCANCODE_RIGHTSHIFT]==KEY_PRESSED)) { specialkeys = KT_SHIFT; } if (caps_state) { specialkeys = KT_CAPS; } /* Now generate events */ for (i=0; i<ATARIBIOS_MAXKEYS; i++) { /* Key pressed ? */ if (SDL_AtariIkbd_keyboard[i]==KEY_PRESSED) { SDL_PrivateKeyboard(SDL_PRESSED, TranslateKey(i, specialkeys, &keysym, SDL_TRUE)); SDL_AtariIkbd_keyboard[i]=KEY_UNDEFINED; } /* Key released ? */ if (SDL_AtariIkbd_keyboard[i]==KEY_RELEASED) { SDL_PrivateKeyboard(SDL_RELEASED, TranslateKey(i, specialkeys, &keysym, SDL_FALSE)); SDL_AtariIkbd_keyboard[i]=KEY_UNDEFINED; } } /*--- Send mouse events ---*/ /* Mouse motion ? */ if (SDL_AtariIkbd_mousex || SDL_AtariIkbd_mousey) { SDL_PrivateMouseMotion(0, 1, SDL_AtariIkbd_mousex, SDL_AtariIkbd_mousey); SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0; } /* Mouse button ? */ if (SDL_AtariIkbd_mouseb != atari_prevmouseb) { for (i=0;i<2;i++) { int curbutton, prevbutton; curbutton = SDL_AtariIkbd_mouseb & (1<<i); prevbutton = atari_prevmouseb & (1<<i); if (curbutton && !prevbutton) { SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0); } if (!curbutton && prevbutton) { SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0); } } atari_prevmouseb = SDL_AtariIkbd_mouseb; } } static SDL_keysym *TranslateKey(int scancode, int numkeytable, SDL_keysym *keysym, SDL_bool pressed) { unsigned char asciicode; /* Set the keysym information */ keysym->scancode = scancode; asciicode=0; switch(numkeytable) { case KT_UNSHIFT: asciicode=tab_unshift[scancode]; break; case KT_SHIFT: asciicode=tab_shift[scancode]; break; case KT_CAPS: asciicode=tab_caps[scancode]; break; } if (asciicode) keysym->sym = asciicode; else keysym->sym = keymap[scancode]; keysym->mod = KMOD_NONE; keysym->unicode = 0; if (SDL_TranslateUNICODE && pressed) { keysym->unicode = SDL_AtariToUnicodeTable[asciicode]; } return(keysym); } void AtariIkbd_ShutdownEvents(void) { Supexec(SDL_AtariIkbdUninstall); }