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 <tpl_drv_keyboard.h>
  11
  12 // === IMPORTS ===
  13 extern void     AcessNative_Exit(void);
  14
  15 // === PROTOTYPES ===
  16  int    UI_Initialise(int MaxWidth, int MaxHeight);
  17  int    UI_MainThread(void *Unused);
  18 void    UI_BlitBitmap(int DstX, int DstY, int SrcW, int SrcH, Uint32 *Bitmap);
  19 void    UI_BlitFramebuffer(int DstX, int DstY, int SrcX, int SrcY, int W, int H);
  20 void    UI_FillBitmap(int X, int Y, int W, int H, Uint32 Value);
  21 void    UI_Redraw(void);
  22
  23 // === GLOBALS ===
  24 SDL_Surface     *gScreen;
  25 SDL_Thread      *gInputThread;
  26  int    giUI_Width = 0;
  27  int    giUI_Height = 0;
  28  int    giUI_Pitch = 0;
  29 tUI_KeybardCallback     gUI_KeyboardCallback;
  30 Uint32  gUI_Keymap[2][SDLK_LAST];       // Upper/Lower case
  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         // Start main thread
  40         gInputThread = SDL_CreateThread(UI_MainThread, NULL);
  41
  42         while(gScreen == NULL)
  43                 SDL_Delay(10);
  44
  45         return 0;
  46 }
  47
  48 Uint32 UI_GetAcessKeyFromSDL(SDLKey Sym, Uint16 Unicode)
  49 {
  50         Uint8   *keystate = SDL_GetKeyState(NULL);
  51          int    shiftState = 0;
  52         Uint32  ret = 0;
  53
  54         if( keystate[SDLK_RSHIFT] || keystate[SDLK_LSHIFT] )
  55                 shiftState = 1;
  56
  57         // Fast return
  58         if( gUI_Keymap[shiftState][Sym] )
  59                 return gUI_Keymap[shiftState][Sym];
  60
  61         // How nice of you, a unicode value
  62         if( Unicode )
  63         {
  64                 ret = Unicode;
  65         }
  66         // Ok, we need to do work :(
  67         else
  68         {
  69                 switch(Sym)
  70                 {
  71                 case SDLK_UP:   ret = KEY_UP;   break;
  72                 case SDLK_DOWN: ret = KEY_DOWN; break;
  73                 case SDLK_LEFT: ret = KEY_LEFT; break;
  74                 case SDLK_RIGHT:ret = KEY_RIGHT;break;
  75                 case SDLK_CAPSLOCK:     ret = KEY_CAPSLOCK;     break;
  76                 case SDLK_F1:   ret = KEY_F1;   break;
  77                 case SDLK_F2:   ret = KEY_F2;   break;
  78                 case SDLK_F3:   ret = KEY_F3;   break;
  79                 case SDLK_F4:   ret = KEY_F4;   break;
  80                 case SDLK_F5:   ret = KEY_F5;   break;
  81                 case SDLK_F6:   ret = KEY_F6;   break;
  82                 case SDLK_F7:   ret = KEY_F7;   break;
  83                 case SDLK_F8:   ret = KEY_F8;   break;
  84                 case SDLK_F9:   ret = KEY_F9;   break;
  85                 case SDLK_F10:  ret = KEY_F10;  break;
  86                 case SDLK_F11:  ret = KEY_F11;  break;
  87                 case SDLK_F12:  ret = KEY_F12;  break;
  88                 default:
  89                         printf("Unhandled key code %i\n", Sym);
  90                         break;
  91                 }
  92         }
  93
  94         gUI_Keymap[shiftState][Sym] = ret;
  95         return ret;
  96 }
  97
  98 int UI_MainThread(void *Unused)
  99 {
 100         SDL_Event       event;
 101         Uint32  acess_sym;
 102
 103         SDL_Init(SDL_INIT_VIDEO);
 104
 105         // Set up video
 106         gScreen = SDL_SetVideoMode(giUI_Width, giUI_Height, 32, 0);
 107         if( !gScreen ) {
 108                 fprintf(stderr, "Couldn't set %ix%i video mode: %s\n", giUI_Width, giUI_Height, SDL_GetError());
 109                 SDL_Quit();
 110                 exit(2);
 111         }
 112         SDL_WM_SetCaption("Acess2", "Acess2");
 113
 114         giUI_Width = gScreen->w;
 115         giUI_Height = gScreen->h;
 116         giUI_Pitch = gScreen->pitch;
 117
 118         SDL_EnableUNICODE(1);
 119
 120         for( ;; )
 121         {
 122                 while(SDL_PollEvent(&event))
 123                 {
 124                         switch(event.type)
 125                         {
 126                         case SDL_QUIT:
 127                                 AcessNative_Exit();
 128                                 return 0;
 129
 130                         case SDL_KEYDOWN:
 131                                 acess_sym = UI_GetAcessKeyFromSDL(event.key.keysym.sym,
 132                                         event.key.keysym.unicode);
 133
 134                                 if( gUI_KeyboardCallback )
 135                                         gUI_KeyboardCallback(acess_sym);
 136                                 break;
 137
 138                         case SDL_KEYUP:
 139                                 acess_sym = UI_GetAcessKeyFromSDL(event.key.keysym.sym,
 140                                         event.key.keysym.unicode);
 141
 142                                 if( gUI_KeyboardCallback )
 143                                         gUI_KeyboardCallback(0x80000000|acess_sym);
 144                                 break;
 145
 146                         default:
 147                                 break;
 148                         }
 149                 }
 150         }
 151 }
 152
 153 void UI_BlitBitmap(int DstX, int DstY, int SrcW, int SrcH, Uint32 *Bitmap)
 154 {
 155         SDL_Surface     *tmp;
 156         SDL_Rect        dstRect;
 157
 158 //      printf("UI_BlitBitmap: Blit to (%i,%i) from %p (%ix%i 32bpp bitmap)\n",
 159 //              DstX, DstY, Bitmap, SrcW, SrcH);
 160
 161         tmp = SDL_CreateRGBSurfaceFrom(Bitmap, SrcW, SrcH, 32, SrcW*4,
 162                 0xFF0000, 0x00FF00, 0x0000FF, 0xFF000000);
 163         SDL_SetAlpha(tmp, 0, SDL_ALPHA_OPAQUE);
 164
 165         dstRect.x = DstX;       dstRect.y = DstY;
 166         dstRect.w = -1; dstRect.h = -1;
 167
 168         SDL_BlitSurface(tmp, NULL, gScreen, &dstRect);
 169         //SDL_BlitSurface(tmp, NULL, gScreen, NULL);
 170
 171         SDL_FreeSurface(tmp);
 172 //      SDL_Flip(gScreen);
 173 }
 174
 175 void UI_BlitFramebuffer(int DstX, int DstY, int SrcX, int SrcY, int W, int H)
 176 {
 177         SDL_Rect        srcRect;
 178         SDL_Rect        dstRect;
 179
 180         srcRect.x = SrcX;       srcRect.y = SrcY;
 181         srcRect.w = W;  srcRect.h = H;
 182         dstRect.x = DstX;       dstRect.y = DstY;
 183
 184         SDL_BlitSurface(gScreen, &srcRect, gScreen, &dstRect);
 185 }
 186
 187 void UI_FillBitmap(int X, int Y, int W, int H, Uint32 Value)
 188 {
 189         SDL_Rect        dstRect;
 190
 191         dstRect.x = X;  dstRect.y = Y;
 192         dstRect.w = W;  dstRect.h = H;
 193
 194 //      printf("UI_FillBitmap: gScreen = %p\n", gScreen);
 195         SDL_FillRect(gScreen, &dstRect, Value);
 196 }
 197
 198 void UI_Redraw(void)
 199 {
 200         // TODO: Keep track of changed rectangle
 201         SDL_UpdateRect(gScreen, 0, 0, giUI_Width, giUI_Height);
 202 }