AcessNative/acesskernel_src/ui_sdl.c

   1 /*
   2  * Acess2 Native Kernel
   3  *
   4  * SDL User Interface
   5  */
   6 #include <SDL/SDL.h>
   7 #define const
   8 #include "ui.h"
   9 #undef const
  10 #include <api_drv_keyboard.h>
  11
  12 // === IMPORTS ===
  13 extern void     AcessNative_Exit(void);
  14
  15 // === PROTOTYPES ===
  16  int    UI_Initialise(int MaxWidth, int MaxHeight);
  17 void    UI_BlitBitmap(int DstX, int DstY, int SrcW, int SrcH, Uint32 *Bitmap);
  18 void    UI_BlitFramebuffer(int DstX, int DstY, int SrcX, int SrcY, int W, int H);
  19 void    UI_FillBitmap(int X, int Y, int W, int H, Uint32 Value);
  20 void    UI_Redraw(void);
  21
  22 // === GLOBALS ===
  23 SDL_Surface     *gScreen;
  24 SDL_Thread      *gInputThread;
  25  int    giUI_Width = 0;
  26  int    giUI_Height = 0;
  27  int    giUI_Pitch = 0;
  28 tUI_KeybardCallback     gUI_KeyboardCallback;
  29 Uint32  gUI_Keymap[2][SDLK_LAST];       // Upper/Lower case
  30  int    gbUpdateTriggered = 0;
  31
  32 // === FUNCTIONS ===
  33 int UI_Initialise(int MaxWidth, int MaxHeight)
  34 {
  35         // Changed when the video mode is set
  36         giUI_Width = MaxWidth;
  37         giUI_Height = MaxHeight;
  38
  39         // Set up video
  40         SDL_Init(SDL_INIT_VIDEO);
  41         printf("UI attempting %ix%i %ibpp\n", giUI_Width, giUI_Height, 32);
  42         gScreen = SDL_SetVideoMode(giUI_Width, giUI_Height, 32, SDL_DOUBLEBUF);
  43         if( !gScreen ) {
  44                 fprintf(stderr, "Couldn't set %ix%i video mode: %s\n", giUI_Width, giUI_Height, SDL_GetError());
  45                 SDL_Quit();
  46                 exit(2);
  47         }
  48         SDL_WM_SetCaption("Acess2", "Acess2");
  49
  50         giUI_Width = gScreen->w;
  51         giUI_Height = gScreen->h;
  52         giUI_Pitch = gScreen->pitch;
  53
  54         printf("UI window %ix%i %i bytes per line\n", giUI_Width, giUI_Height, giUI_Pitch);
  55
  56         SDL_EnableUNICODE(1);
  57
  58         return 0;
  59 }
  60
  61 Uint32 UI_GetAcessKeyFromSDL(SDLKey Sym)
  62 {
  63         Uint8   *keystate = SDL_GetKeyState(NULL);
  64          int    shiftState = 0;
  65         Uint32  ret = 0;
  66
  67         if( keystate[SDLK_RSHIFT] || keystate[SDLK_LSHIFT] )
  68                 shiftState = 1;
  69
  70         // Fast return
  71         if( gUI_Keymap[shiftState][Sym] )
  72                 return gUI_Keymap[shiftState][Sym];
  73
  74         switch(Sym)
  75         {
  76         case SDLK_a ... SDLK_z:
  77                 ret = Sym - SDLK_a + KEYSYM_a;
  78                 break;
  79         case SDLK_0 ... SDLK_9:
  80                 ret = Sym - SDLK_0 + KEYSYM_0;
  81                 break;
  82         case SDLK_SLASH:        ret = KEYSYM_SLASH;     break;
  83         case SDLK_CAPSLOCK:     ret = KEYSYM_CAPS;      break;
  84         case SDLK_TAB:  ret = KEYSYM_TAB;       break;
  85         case SDLK_UP:   ret = KEYSYM_UPARROW;   break;
  86         case SDLK_DOWN: ret = KEYSYM_DOWNARROW; break;
  87         case SDLK_LEFT: ret = KEYSYM_LEFTARROW; break;
  88         case SDLK_RIGHT:ret = KEYSYM_RIGHTARROW;break;
  89         case SDLK_F1:   ret = KEYSYM_F1;        break;
  90         case SDLK_F2:   ret = KEYSYM_F2;        break;
  91         case SDLK_F3:   ret = KEYSYM_F3;        break;
  92         case SDLK_F4:   ret = KEYSYM_F4;        break;
  93         case SDLK_F5:   ret = KEYSYM_F5;        break;
  94         case SDLK_F6:   ret = KEYSYM_F6;        break;
  95         case SDLK_F7:   ret = KEYSYM_F7;        break;
  96         case SDLK_F8:   ret = KEYSYM_F8;        break;
  97         case SDLK_F9:   ret = KEYSYM_F9;        break;
  98         case SDLK_F10:  ret = KEYSYM_F10;       break;
  99         case SDLK_F11:  ret = KEYSYM_F11;       break;
 100         case SDLK_F12:  ret = KEYSYM_F12;       break;
 101         case SDLK_RETURN:       ret = KEYSYM_RETURN;    break;
 102         case SDLK_LALT:         ret = KEYSYM_LEFTALT;   break;
 103         case SDLK_LCTRL:        ret = KEYSYM_LEFTCTRL;  break;
 104         case SDLK_LSHIFT:       ret = KEYSYM_LEFTSHIFT; break;
 105         case SDLK_LSUPER:       ret = KEYSYM_LEFTGUI;   break;
 106         case SDLK_RALT:         ret = KEYSYM_RIGHTALT;  break;
 107         case SDLK_RCTRL:        ret = KEYSYM_RIGHTCTRL; break;
 108         case SDLK_RSHIFT:       ret = KEYSYM_RIGHTSHIFT;        break;
 109         case SDLK_RSUPER:       ret = KEYSYM_RIGHTGUI;  break;
 110         case SDLK_BACKSPACE:    ret = KEYSYM_BACKSP;    break;
 111         default:
 112                 printf("Unhandled key code %i\n", Sym);
 113                 break;
 114         }
 115
 116         gUI_Keymap[shiftState][Sym] = ret;
 117         return ret;
 118 }
 119
 120 Uint32 UI_GetButtonBits(Uint8 sdlstate)
 121 {
 122         Uint32  rv = 0;
 123         rv |= sdlstate & SDL_BUTTON(SDL_BUTTON_LEFT)    ? (1 << 0) : 0;
 124         rv |= sdlstate & SDL_BUTTON(SDL_BUTTON_RIGHT)   ? (1 << 1) : 0;
 125         rv |= sdlstate & SDL_BUTTON(SDL_BUTTON_MIDDLE)  ? (1 << 2) : 0;
 126         rv |= sdlstate & SDL_BUTTON(SDL_BUTTON_X1)      ? (1 << 3) : 0;
 127         rv |= sdlstate & SDL_BUTTON(SDL_BUTTON_X2)      ? (1 << 4) : 0;
 128         return rv;
 129 }
 130
 131 void UI_MainLoop(void)
 132 {
 133         SDL_Event       event;
 134         Uint32  acess_sym;
 135
 136         while( SDL_WaitEvent(&event) )
 137         {
 138                 switch(event.type)
 139                 {
 140                 case SDL_QUIT:
 141                         AcessNative_Exit();
 142                         return ;
 143
 144                 case SDL_KEYDOWN:
 145                         acess_sym = UI_GetAcessKeyFromSDL(event.key.keysym.sym);
 146                         // Enter key on acess returns \n, but SDL returns \r
 147                         if(event.key.keysym.sym == SDLK_RETURN)
 148                                 event.key.keysym.unicode = '\n';
 149
 150                         if( gUI_KeyboardCallback ) {
 151                                 gUI_KeyboardCallback(KEY_ACTION_RAWSYM|acess_sym);
 152                                 gUI_KeyboardCallback(KEY_ACTION_PRESS|event.key.keysym.unicode);
 153                         }
 154                         break;
 155
 156                 case SDL_KEYUP:
 157                         acess_sym = UI_GetAcessKeyFromSDL(event.key.keysym.sym);
 158
 159                         if( gUI_KeyboardCallback ) {
 160                                 gUI_KeyboardCallback(KEY_ACTION_RAWSYM|acess_sym);
 161                                 gUI_KeyboardCallback(KEY_ACTION_RELEASE|0);
 162                         }
 163                         break;
 164
 165                 case SDL_USEREVENT:
 166                         if( gbUpdateTriggered )
 167                         {
 168                                 gbUpdateTriggered = 0;
 169                                 SDL_UpdateRect(gScreen, 0, 0, giUI_Width, giUI_Height);
 170                                 SDL_Flip(gScreen);
 171                         }
 172                         break;
 173
 174                 case SDL_MOUSEMOTION: {
 175                         int abs[] = {event.motion.x, event.motion.y};
 176                         int delta[] = {event.motion.xrel, event.motion.yrel};
 177                         Mouse_HandleEvent(UI_GetButtonBits(SDL_GetMouseState(NULL, NULL)), delta, abs);
 178                         break; }
 179                 case SDL_MOUSEBUTTONUP:
 180                 case SDL_MOUSEBUTTONDOWN: {
 181                         int abs[] = {event.button.x, event.button.y};
 182                         Mouse_HandleEvent(UI_GetButtonBits(SDL_GetMouseState(NULL, NULL)), NULL, abs);
 183                         break; }
 184
 185                 default:
 186                         break;
 187                 }
 188         }
 189 }
 190
 191 void UI_BlitBitmap(int DstX, int DstY, int SrcW, int SrcH, Uint32 *Bitmap)
 192 {
 193         SDL_Surface     *tmp;
 194         SDL_Rect        dstRect;
 195
 196 //      printf("UI_BlitBitmap: Blit to (%i,%i) from %p (%ix%i 32bpp bitmap)\n",
 197 //              DstX, DstY, Bitmap, SrcW, SrcH);
 198
 199         tmp = SDL_CreateRGBSurfaceFrom(Bitmap, SrcW, SrcH, 32, SrcW*4,
 200                 0xFF0000, 0x00FF00, 0x0000FF, 0xFF000000);
 201         SDL_SetAlpha(tmp, 0, SDL_ALPHA_OPAQUE);
 202
 203         dstRect.x = DstX;       dstRect.y = DstY;
 204         dstRect.w = -1; dstRect.h = -1;
 205
 206         SDL_BlitSurface(tmp, NULL, gScreen, &dstRect);
 207         //SDL_BlitSurface(tmp, NULL, gScreen, NULL);
 208
 209         SDL_FreeSurface(tmp);
 210 //      SDL_Flip(gScreen);
 211 }
 212
 213 void UI_BlitFramebuffer(int DstX, int DstY, int SrcX, int SrcY, int W, int H)
 214 {
 215         SDL_Rect        srcRect;
 216         SDL_Rect        dstRect;
 217
 218         srcRect.x = SrcX;       srcRect.y = SrcY;
 219         srcRect.w = W;  srcRect.h = H;
 220         dstRect.x = DstX;       dstRect.y = DstY;
 221
 222         SDL_BlitSurface(gScreen, &srcRect, gScreen, &dstRect);
 223 }
 224
 225 void UI_FillBitmap(int X, int Y, int W, int H, Uint32 Value)
 226 {
 227         SDL_Rect        dstRect;
 228
 229         dstRect.x = X;  dstRect.y = Y;
 230         dstRect.w = W;  dstRect.h = H;
 231
 232 //      printf("UI_FillBitmap: gScreen = %p\n", gScreen);
 233         SDL_FillRect(gScreen, &dstRect, Value);
 234 }
 235
 236 void UI_Redraw(void)
 237 {
 238         // TODO: Keep track of changed rectangle
 239 //      SDL_UpdateRect(gScreen, 0, 0, giUI_Width, giUI_Height);
 240         if( gbUpdateTriggered == 0 )
 241         {
 242                 gbUpdateTriggered = 1;
 243                 SDL_Event       e;
 244
 245                 e.type = SDL_USEREVENT;
 246                 e.user.code = 0;
 247                 e.user.data1 = 0;
 248                 e.user.data2 = 0;
 249
 250                 SDL_PushEvent( &e );
 251         }
 252 }