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         // Enter key on acess returns \n, but SDL returns \r
  62         if( Sym == SDLK_RETURN )
  63                 Unicode = '\n';
  64
  65         // How nice of you, a unicode value
  66         if( Unicode )
  67         {
  68                 ret = Unicode;
  69         }
  70         // Ok, we need to do work :(
  71         else
  72         {
  73                 switch(Sym)
  74                 {
  75                 case SDLK_UP:   ret = KEY_UP;   break;
  76                 case SDLK_DOWN: ret = KEY_DOWN; break;
  77                 case SDLK_LEFT: ret = KEY_LEFT; break;
  78                 case SDLK_RIGHT:ret = KEY_RIGHT;break;
  79                 case SDLK_CAPSLOCK:     ret = KEY_CAPSLOCK;     break;
  80                 case SDLK_F1:   ret = KEY_F1;   break;
  81                 case SDLK_F2:   ret = KEY_F2;   break;
  82                 case SDLK_F3:   ret = KEY_F3;   break;
  83                 case SDLK_F4:   ret = KEY_F4;   break;
  84                 case SDLK_F5:   ret = KEY_F5;   break;
  85                 case SDLK_F6:   ret = KEY_F6;   break;
  86                 case SDLK_F7:   ret = KEY_F7;   break;
  87                 case SDLK_F8:   ret = KEY_F8;   break;
  88                 case SDLK_F9:   ret = KEY_F9;   break;
  89                 case SDLK_F10:  ret = KEY_F10;  break;
  90                 case SDLK_F11:  ret = KEY_F11;  break;
  91                 case SDLK_F12:  ret = KEY_F12;  break;
  92                 case SDLK_RETURN:       ret = '\n';     break;
  93                 default:
  94                         printf("Unhandled key code %i\n", Sym);
  95                         break;
  96                 }
  97         }
  98
  99         gUI_Keymap[shiftState][Sym] = ret;
 100         return ret;
 101 }
 102
 103 int UI_MainThread(void *Unused)
 104 {
 105         SDL_Event       event;
 106         Uint32  acess_sym;
 107
 108         SDL_Init(SDL_INIT_VIDEO);
 109
 110         // Set up video
 111         gScreen = SDL_SetVideoMode(giUI_Width, giUI_Height, 32, 0);
 112         if( !gScreen ) {
 113                 fprintf(stderr, "Couldn't set %ix%i video mode: %s\n", giUI_Width, giUI_Height, SDL_GetError());
 114                 SDL_Quit();
 115                 exit(2);
 116         }
 117         SDL_WM_SetCaption("Acess2", "Acess2");
 118
 119         giUI_Width = gScreen->w;
 120         giUI_Height = gScreen->h;
 121         giUI_Pitch = gScreen->pitch;
 122
 123         SDL_EnableUNICODE(1);
 124
 125         for( ;; )
 126         {
 127                 while(SDL_PollEvent(&event))
 128                 {
 129                         switch(event.type)
 130                         {
 131                         case SDL_QUIT:
 132                                 AcessNative_Exit();
 133                                 return 0;
 134
 135                         case SDL_KEYDOWN:
 136                                 acess_sym = UI_GetAcessKeyFromSDL(event.key.keysym.sym,
 137                                         event.key.keysym.unicode);
 138
 139                                 if( gUI_KeyboardCallback )
 140                                         gUI_KeyboardCallback(acess_sym);
 141                                 break;
 142
 143                         case SDL_KEYUP:
 144                                 acess_sym = UI_GetAcessKeyFromSDL(event.key.keysym.sym,
 145                                         event.key.keysym.unicode);
 146
 147                                 if( gUI_KeyboardCallback )
 148                                         gUI_KeyboardCallback(0x80000000|acess_sym);
 149                                 break;
 150
 151                         default:
 152                                 break;
 153                         }
 154                 }
 155         }
 156 }
 157
 158 void UI_BlitBitmap(int DstX, int DstY, int SrcW, int SrcH, Uint32 *Bitmap)
 159 {
 160         SDL_Surface     *tmp;
 161         SDL_Rect        dstRect;
 162
 163 //      printf("UI_BlitBitmap: Blit to (%i,%i) from %p (%ix%i 32bpp bitmap)\n",
 164 //              DstX, DstY, Bitmap, SrcW, SrcH);
 165
 166         tmp = SDL_CreateRGBSurfaceFrom(Bitmap, SrcW, SrcH, 32, SrcW*4,
 167                 0xFF0000, 0x00FF00, 0x0000FF, 0xFF000000);
 168         SDL_SetAlpha(tmp, 0, SDL_ALPHA_OPAQUE);
 169
 170         dstRect.x = DstX;       dstRect.y = DstY;
 171         dstRect.w = -1; dstRect.h = -1;
 172
 173         SDL_BlitSurface(tmp, NULL, gScreen, &dstRect);
 174         //SDL_BlitSurface(tmp, NULL, gScreen, NULL);
 175
 176         SDL_FreeSurface(tmp);
 177 //      SDL_Flip(gScreen);
 178 }
 179
 180 void UI_BlitFramebuffer(int DstX, int DstY, int SrcX, int SrcY, int W, int H)
 181 {
 182         SDL_Rect        srcRect;
 183         SDL_Rect        dstRect;
 184
 185         srcRect.x = SrcX;       srcRect.y = SrcY;
 186         srcRect.w = W;  srcRect.h = H;
 187         dstRect.x = DstX;       dstRect.y = DstY;
 188
 189         SDL_BlitSurface(gScreen, &srcRect, gScreen, &dstRect);
 190 }
 191
 192 void UI_FillBitmap(int X, int Y, int W, int H, Uint32 Value)
 193 {
 194         SDL_Rect        dstRect;
 195
 196         dstRect.x = X;  dstRect.y = Y;
 197         dstRect.w = W;  dstRect.h = H;
 198
 199 //      printf("UI_FillBitmap: gScreen = %p\n", gScreen);
 200         SDL_FillRect(gScreen, &dstRect, Value);
 201 }
 202
 203 void UI_Redraw(void)
 204 {
 205         // TODO: Keep track of changed rectangle
 206         SDL_UpdateRect(gScreen, 0, 0, giUI_Width, giUI_Height);
 207 }