vid_sdl.c

   1 /*
   2 Copyright (C) 2003  T. Joseph Carter
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18 */
  19 /*
  20 TODOs until first commit:
  21         1. Hide and/or show the mouse whether the mainwindow is focused or not.
  22         2. Minimize when losing focus in fullscreen mode.
  23 d       3. GrabInput while mainwindow is active.
  24         4
  25
  26 */
  27 #include <SDL.h>
  28 #include <stdio.h>
  29
  30 #include "quakedef.h"
  31
  32 // Tell startup code that we have a client
  33 int cl_available = true;
  34 static int vid_usingmouse;
  35 static int vid_isfullscreen;
  36
  37 static SDL_Surface *screen;
  38
  39 static Uint8 in_mouse_buttons;
  40
  41 static void IN_Init( void );
  42 static void IN_Shutdown( void );
  43
  44 /////////////////////////
  45 // Input handling
  46 ////
  47 //TODO: Add joystick support
  48 //TODO: Add error checking
  49
  50
  51 //keysym to quake keysym mapping
  52 #define tenoh   0,0,0,0,0, 0,0,0,0,0
  53 #define fiftyoh tenoh, tenoh, tenoh, tenoh, tenoh
  54 #define hundredoh fiftyoh, fiftyoh
  55 static unsigned int tbl_sdltoquake[] =
  56 {
  57         0,0,0,0,                //SDLK_UNKNOWN          = 0,
  58         0,0,0,0,                //SDLK_FIRST            = 0,
  59         K_BACKSPACE,    //SDLK_BACKSPACE        = 8,
  60         K_TAB,                  //SDLK_TAB                      = 9,
  61         0,0,
  62         0,                              //SDLK_CLEAR            = 12,
  63         K_ENTER,                //SDLK_RETURN           = 13,
  64     0,0,0,0,0,
  65         K_PAUSE,                //SDLK_PAUSE            = 19,
  66         0,0,0,0,0,0,0,
  67         K_ESCAPE,               //SDLK_ESCAPE           = 27,
  68         0,0,0,0,
  69         K_SPACE,                //SDLK_SPACE            = 32,
  70         '!',                    //SDLK_EXCLAIM          = 33,
  71         '"',                    //SDLK_QUOTEDBL         = 34,
  72         '#',                    //SDLK_HASH                     = 35,
  73         '$',                    //SDLK_DOLLAR           = 36,
  74         0,
  75         '&',                    //SDLK_AMPERSAND        = 38,
  76         '\'',                   //SDLK_QUOTE            = 39,
  77         '(',                    //SDLK_LEFTPAREN        = 40,
  78         ')',                    //SDLK_RIGHTPAREN       = 41,
  79         '*',                    //SDLK_ASTERISK         = 42,
  80         '+',                    //SDLK_PLUS                     = 43,
  81         ',',                    //SDLK_COMMA            = 44,
  82         '-',                    //SDLK_MINUS            = 45,
  83         '.',                    //SDLK_PERIOD           = 46,
  84         '/',                    //SDLK_SLASH            = 47,
  85         '0',                    //SDLK_0                        = 48,
  86         '1',                    //SDLK_1                        = 49,
  87         '2',                    //SDLK_2                        = 50,
  88         '3',                    //SDLK_3                        = 51,
  89         '4',                    //SDLK_4                        = 52,
  90         '5',                    //SDLK_5                        = 53,
  91         '6',                    //SDLK_6                        = 54,
  92         '7',                    //SDLK_7                        = 55,
  93         '8',                    //SDLK_8                        = 56,
  94         '9',                    //SDLK_9                        = 57,
  95         ':',                    //SDLK_COLON            = 58,
  96         ';',                    //SDLK_SEMICOLON        = 59,
  97         '<',                    //SDLK_LESS                     = 60,
  98         '=',                    //SDLK_EQUALS           = 61,
  99         '>',                    //SDLK_GREATER          = 62,
 100         '?',                    //SDLK_QUESTION         = 63,
 101         '@',                    //SDLK_AT                       = 64,
 102         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 103         '[',            //SDLK_LEFTBRACKET      = 91,
 104         '\\',           //SDLK_BACKSLASH        = 92,
 105         ']',            //SDLK_RIGHTBRACKET     = 93,
 106         '^',            //SDLK_CARET            = 94,
 107         '_',            //SDLK_UNDERSCORE       = 95,
 108         '`',            //SDLK_BACKQUOTE        = 96,
 109         'a',            //SDLK_a                        = 97,
 110         'b',            //SDLK_b                        = 98,
 111         'c',            //SDLK_c                        = 99,
 112         'd',            //SDLK_d                        = 100,
 113         'e',            //SDLK_e                        = 101,
 114         'f',            //SDLK_f                        = 102,
 115         'g',            //SDLK_g                        = 103,
 116         'h',            //SDLK_h                        = 104,
 117         'i',            //SDLK_i                        = 105,
 118         'j',            //SDLK_j                        = 106,
 119         'k',            //SDLK_k                        = 107,
 120         'l',            //SDLK_l                        = 108,
 121         'm',            //SDLK_m                        = 109,
 122         'n',            //SDLK_n                        = 110,
 123         'o',            //SDLK_o                        = 111,
 124         'p',            //SDLK_p                        = 112,
 125         'q',            //SDLK_q                        = 113,
 126         'r',            //SDLK_r                        = 114,
 127         's',            //SDLK_s                        = 115,
 128         't',            //SDLK_t                        = 116,
 129         'u',            //SDLK_u                        = 117,
 130         'v',            //SDLK_v                        = 118,
 131         'w',            //SDLK_w                        = 119,
 132         'x',            //SDLK_x                        = 120,
 133         'y',            //SDLK_y                        = 121,
 134         'z',            //SDLK_z                        = 122,
 135         0,0,0,0,
 136         K_DEL,          //SDLK_DELETE           = 127,
 137         hundredoh /*227*/, tenoh, tenoh, 0,0,0,0,0,0,0,0,
 138         K_KP_0,         //SDLK_KP0              = 256,
 139         K_KP_1,         //SDLK_KP1              = 257,
 140         K_KP_2,         //SDLK_KP2              = 258,
 141         K_KP_3,         //SDLK_KP3              = 259,
 142         K_KP_4,         //SDLK_KP4              = 260,
 143         K_KP_5,         //SDLK_KP5              = 261,
 144         K_KP_6,         //SDLK_KP6              = 262,
 145         K_KP_7,         //SDLK_KP7              = 263,
 146         K_KP_8,         //SDLK_KP8              = 264,
 147         K_KP_9,         //SDLK_KP9              = 265,
 148         K_KP_PERIOD,//SDLK_KP_PERIOD    = 266,
 149         K_KP_DIVIDE,//SDLK_KP_DIVIDE    = 267,
 150         K_KP_MULTIPLY,//SDLK_KP_MULTIPLY= 268,
 151         K_KP_MINUS,     //SDLK_KP_MINUS         = 269,
 152         K_KP_PLUS,      //SDLK_KP_PLUS          = 270,
 153         K_KP_ENTER,     //SDLK_KP_ENTER         = 271,
 154         K_KP_EQUALS,//SDLK_KP_EQUALS    = 272,
 155         K_UPARROW,      //SDLK_UP               = 273,
 156         K_DOWNARROW,//SDLK_DOWN         = 274,
 157         K_RIGHTARROW,//SDLK_RIGHT       = 275,
 158         K_LEFTARROW,//SDLK_LEFT         = 276,
 159         K_INS,          //SDLK_INSERT   = 277,
 160         K_HOME,         //SDLK_HOME             = 278,
 161         K_END,          //SDLK_END              = 279,
 162         K_PGUP,         //SDLK_PAGEUP   = 280,
 163         K_PGDN,         //SDLK_PAGEDOWN = 281,
 164         K_F1,           //SDLK_F1               = 282,
 165         K_F2,           //SDLK_F2               = 283,
 166         K_F3,           //SDLK_F3               = 284,
 167         K_F4,           //SDLK_F4               = 285,
 168         K_F5,           //SDLK_F5               = 286,
 169         K_F6,           //SDLK_F6               = 287,
 170         K_F7,           //SDLK_F7               = 288,
 171         K_F8,           //SDLK_F8               = 289,
 172         K_F9,           //SDLK_F9               = 290,
 173         K_F10,          //SDLK_F10              = 291,
 174         K_F11,          //SDLK_F11              = 292,
 175         K_F12,          //SDLK_F12              = 293,
 176         0,                      //SDLK_F13              = 294,
 177         0,                      //SDLK_F14              = 295,
 178         0,                      //SDLK_F15              = 296,
 179         0,0,0,
 180         K_NUMLOCK,      //SDLK_NUMLOCK  = 300,
 181         K_CAPSLOCK,     //SDLK_CAPSLOCK = 301,
 182         K_SCROLLOCK,//SDLK_SCROLLOCK= 302,
 183         K_SHIFT,        //SDLK_RSHIFT   = 303,
 184         K_SHIFT,        //SDLK_LSHIFT   = 304,
 185         K_CTRL,         //SDLK_RCTRL    = 305,
 186         K_CTRL,         //SDLK_LCTRL    = 306,
 187         K_ALT,          //SDLK_RALT             = 307,
 188         K_ALT,          //SDLK_LALT             = 308,
 189         0,                      //SDLK_RMETA    = 309,
 190         0,                      //SDLK_LMETA    = 310,
 191         0,                      //SDLK_LSUPER   = 311,          /* Left "Windows" key */
 192         0,                      //SDLK_RSUPER   = 312,          /* Right "Windows" key */
 193         0,                      //SDLK_MODE             = 313,          /* "Alt Gr" key */
 194         0,                      //SDLK_COMPOSE  = 314,          /* Multi-key compose key */
 195         0,                      //SDLK_HELP             = 315,
 196         0,                      //SDLK_PRINT    = 316,
 197         0,                      //SDLK_SYSREQ   = 317,
 198         K_PAUSE,        //SDLK_BREAK    = 318,
 199         0,                      //SDLK_MENU             = 319,
 200         0,                      //SDLK_POWER    = 320,          /* Power Macintosh power key */
 201         'e',            //SDLK_EURO             = 321,          /* Some european keyboards */
 202         0                       //SDLK_UNDO             = 322,          /* Atari keyboard has Undo */
 203 };
 204 #undef tenoh
 205 #undef fiftyoh
 206 #undef hundredoh
 207
 208 static int MapKey( int sdlkey )
 209 {
 210         if( sdlkey > sizeof(tbl_sdltoquake)/ sizeof(int) )
 211                 return 0;
 212     return tbl_sdltoquake[ sdlkey ];
 213 }
 214
 215 static void IN_Activate( void )
 216 {
 217         SDL_WM_GrabInput( SDL_GRAB_ON );
 218         SDL_ShowCursor( SDL_DISABLE );
 219 }
 220
 221 static void IN_Deactivate( void )
 222 {
 223         SDL_WM_GrabInput( SDL_GRAB_OFF );
 224         SDL_ShowCursor( SDL_ENABLE );
 225 }
 226
 227 void IN_Commands (void)
 228 {
 229 }
 230
 231 static void IN_MouseMove (usercmd_t *cmd)
 232 {
 233         int x, y;
 234         Uint8 state;
 235         int i;
 236
 237         if( !vid_usingmouse ) {
 238                 IN_Mouse( cmd, 0, 0 );
 239                 return;
 240         }
 241
 242         state = SDL_GetRelativeMouseState( &x, &y );
 243         for( i = 0; i < 8 ; i++ )
 244                 if( state & ~in_mouse_buttons & 1 << i  )
 245                         Key_Event( K_MOUSE1 + i, 0, true );
 246                 else if( ~state & in_mouse_buttons & 1 << i )
 247                         Key_Event( K_MOUSE1 + i, 0, false );
 248
 249         in_mouse_buttons = state;
 250
 251         IN_Mouse( cmd, x, y );
 252 }
 253
 254 void IN_Move( usercmd_t *cmd )
 255 {
 256         IN_MouseMove( cmd );
 257 }
 258
 259 static void IN_Init( void )
 260 {
 261         // init keyboard
 262         SDL_EnableUNICODE( SDL_ENABLE );
 263
 264         // init mouse
 265         in_mouse_buttons = SDL_GetMouseState( NULL, NULL );
 266         vid_usingmouse = false;
 267 }
 268
 269 static void IN_Shutdown( void )
 270 {
 271 }
 272
 273 /////////////////////
 274 // Message Handling
 275 ////
 276
 277 static int Sys_EventFilter( SDL_Event *event )
 278 {
 279         //TODO: Add a quit query in linux, too - though linux user are more likely to know what they do
 280 #ifdef WIN32
 281         if( event->type == SDL_QUIT && MessageBox( NULL, "Are you sure you want to quit?", "Confirm Exit", MB_YESNO | MB_SETFOREGROUND | MB_ICONQUESTION ) == IDNO )
 282                 return 0;
 283         else
 284                 return 1;
 285 #else
 286         return 1;
 287 #endif
 288 }
 289
 290 void Sys_SendKeyEvents( void )
 291 {
 292         SDL_Event event;
 293
 294         while( SDL_PollEvent( &event ) )
 295                 switch( event.type ) {
 296                         case SDL_QUIT:
 297                                 Sys_Quit();
 298                                 break;
 299                         case SDL_KEYDOWN:
 300                         case SDL_KEYUP:
 301                                 Key_Event( MapKey( event.key.keysym.sym ), event.key.keysym.unicode, (event.key.state == SDL_PRESSED) );
 302                                 break;
 303                         case SDL_ACTIVEEVENT:
 304                                 if( event.active.state == SDL_APPACTIVE )
 305                                         if( event.active.gain )
 306                                                 vid_hidden = false;
 307                                         else
 308                                                 vid_hidden = true;
 309                                 break;
 310                 }
 311 }
 312
 313 /////////////////
 314 // Video system
 315 ////
 316
 317 void *GL_GetProcAddress(const char *name)
 318 {
 319         void *p = NULL;
 320         p = SDL_GL_GetProcAddress(name);
 321         return p;
 322 }
 323
 324 static int Sys_EventFilter( SDL_Event *event );
 325 void VID_Init (void)
 326 {
 327         if (SDL_Init(SDL_INIT_VIDEO) < 0)
 328                 Sys_Error ("Failed to init video: %s\n", SDL_GetError());
 329         vid_isfullscreen = false;
 330
 331         SDL_SetEventFilter( (SDL_EventFilter) Sys_EventFilter );
 332         IN_Init();
 333 }
 334
 335 int VID_InitMode(int fullscreen, int width, int height, int bpp)
 336 {
 337         int i;
 338         int flags = SDL_OPENGL;
 339         const char *drivername;
 340
 341         /*
 342         SDL Hack
 343                 We cant switch from one OpenGL video mode to another.
 344                 Thus we first switch to some stupid 2D mode and then back to OpenGL.
 345         */
 346         SDL_SetVideoMode( 0, 0, 0, 0 );
 347
 348 #ifdef WIN32
 349         drivername = "opengl32.dll";
 350 #elif defined(__APPLE__) && defined(__MACH__)
 351         drivername = "OpenGL.framework";
 352 #else
 353         drivername = "libGL.so.1";
 354 #endif
 355
 356         i = COM_CheckParm("-gl_driver");
 357         if (i && i < com_argc - 1)
 358                 drivername = com_argv[i + 1];
 359         if (SDL_GL_LoadLibrary(drivername))
 360         {
 361                 Con_Printf("Unable to load GL driver \"%s\": ", drivername, SDL_GetError());
 362                 return false;
 363         }
 364
 365         qglGetString = GL_GetProcAddress("glGetString");
 366
 367         // Knghtbrd: should do platform-specific extension string function here
 368
 369         if (qglGetString == NULL)
 370         {
 371                 VID_Shutdown();
 372                 Con_Print("Required OpenGL function glGetString not found\n");
 373                 return false;
 374         }
 375
 376         vid_isfullscreen = false;
 377         if (fullscreen) {
 378                 flags |= SDL_FULLSCREEN;
 379                 vid_isfullscreen = true;
 380         }
 381
 382         SDL_GL_SetAttribute (SDL_GL_RED_SIZE, 1);
 383         SDL_GL_SetAttribute (SDL_GL_GREEN_SIZE, 1);
 384         SDL_GL_SetAttribute (SDL_GL_BLUE_SIZE, 1);
 385         SDL_GL_SetAttribute (SDL_GL_DEPTH_SIZE, 16);
 386         SDL_GL_SetAttribute (SDL_GL_DOUBLEBUFFER, 1);
 387
 388         screen = SDL_SetVideoMode(width, height, bpp, flags);
 389         if (screen == NULL)
 390         {
 391                 Con_Printf("Failed to set video mode to %ix%i: %s\n", width, height, SDL_GetError);
 392                 VID_Shutdown();
 393                 return false;
 394         }
 395
 396         gl_renderer = qglGetString(GL_RENDERER);
 397         gl_vendor = qglGetString(GL_VENDOR);
 398         gl_version = qglGetString(GL_VERSION);
 399         gl_extensions = qglGetString(GL_EXTENSIONS);
 400         gl_platform = "SDL";
 401         // Knghtbrd: should assign platform-specific extensions here
 402         //TODO: maybe ;)
 403         gl_platformextensions = "";
 404         gl_videosyncavailable = false;
 405
 406         GL_Init();
 407
 408         vid_hidden = false;
 409         vid_activewindow = false;
 410         vid_usingmouse = false;
 411         IN_Init();
 412         return true;
 413 }
 414
 415 void VID_Shutdown (void)
 416 {
 417         IN_Shutdown();
 418         SDL_QuitSubSystem(SDL_INIT_VIDEO);
 419 }
 420
 421 int VID_SetGamma (unsigned short *ramps)
 422 {
 423         return !SDL_SetGammaRamp (ramps, ramps + 256, ramps + 512);
 424 }
 425
 426 int VID_GetGamma (unsigned short *ramps)
 427 {
 428         return !SDL_GetGammaRamp( ramps, ramps + 256, ramps + 512);
 429 }
 430
 431 void VID_GetWindowSize (int *x, int *y, int *width, int *height)
 432 {
 433         *x = *y = 0;
 434         *width = screen->w;
 435         *height = screen->h;
 436 }
 437
 438 void VID_Finish (void)
 439 {
 440         Uint8 appstate;
 441         int vid_usemouse;
 442
 443         qglFinish();
 444         SDL_GL_SwapBuffers();
 445
 446         //react on appstate changes
 447         appstate = SDL_GetAppState();
 448
 449         if( !( appstate & SDL_APPMOUSEFOCUS ) || !( appstate & SDL_APPINPUTFOCUS ) )
 450                 vid_activewindow = false;
 451         else
 452                 vid_activewindow = true;
 453
 454         vid_usemouse = false;
 455         if( vid_mouse.integer && !key_consoleactive )
 456                 vid_usemouse = true;
 457         if( vid_isfullscreen )
 458                 vid_usemouse = true;
 459         if( !vid_activewindow )
 460                 vid_usemouse = false;
 461
 462         if( vid_usemouse && !vid_usingmouse ) {
 463                 vid_usingmouse = true;
 464                 IN_Activate();
 465         } else if( !vid_usemouse && vid_usingmouse ) {
 466                 vid_usingmouse = false;
 467                 IN_Deactivate();
 468         }
 469 }