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         return 0;
  43 }
  44
  45 Uint32 UI_GetAcessKeyFromSDL(SDLKey Sym, Uint16 Unicode)
  46 {
  47         Uint8   *keystate = SDL_GetKeyState(NULL);
  48          int    shiftState = 0;
  49         Uint32  ret = 0;
  50
  51         if( keystate[SDLK_RSHIFT] || keystate[SDLK_LSHIFT] )
  52                 shiftState = 1;
  53
  54         // Fast return
  55         if( gUI_Keymap[shiftState][Sym] )
  56                 return gUI_Keymap[shiftState][Sym];
  57
  58         // How nice of you, a unicode value
  59         if( Unicode )
  60         {
  61                 ret = Unicode;
  62         }
  63         // Ok, we need to do work :(
  64         else
  65         {
  66                 switch(Sym)
  67                 {
  68                 case SDLK_UP:   ret = KEY_UP;   break;
  69                 case SDLK_DOWN: ret = KEY_DOWN; break;
  70                 case SDLK_LEFT: ret = KEY_LEFT; break;
  71                 case SDLK_RIGHT:ret = KEY_RIGHT;break;
  72                 case SDLK_CAPSLOCK:     ret = KEY_CAPSLOCK;     break;
  73                 case SDLK_F1:   ret = KEY_F1;   break;
  74                 case SDLK_F2:   ret = KEY_F2;   break;
  75                 case SDLK_F3:   ret = KEY_F3;   break;
  76                 case SDLK_F4:   ret = KEY_F4;   break;
  77                 case SDLK_F5:   ret = KEY_F5;   break;
  78                 case SDLK_F6:   ret = KEY_F6;   break;
  79                 case SDLK_F7:   ret = KEY_F7;   break;
  80                 case SDLK_F8:   ret = KEY_F8;   break;
  81                 case SDLK_F9:   ret = KEY_F9;   break;
  82                 case SDLK_F10:  ret = KEY_F10;  break;
  83                 case SDLK_F11:  ret = KEY_F11;  break;
  84                 case SDLK_F12:  ret = KEY_F12;  break;
  85                 default:
  86                         printf("Unhandled key code %i\n", Sym);
  87                         break;
  88                 }
  89         }
  90
  91         gUI_Keymap[shiftState][Sym] = ret;
  92         return ret;
  93 }
  94
  95 int UI_MainThread(void *Unused)
  96 {
  97         SDL_Event       event;
  98         Uint32  acess_sym;
  99
 100         SDL_Init(SDL_INIT_VIDEO);
 101
 102         // Set up video
 103         gScreen = SDL_SetVideoMode(giUI_Width, giUI_Height, 32, 0);
 104         if( !gScreen ) {
 105                 fprintf(stderr, "Couldn't set %ix%i video mode: %s\n", giUI_Width, giUI_Height, SDL_GetError());
 106                 SDL_Quit();
 107                 exit(2);
 108         }
 109         SDL_WM_SetCaption("Acess2", "Acess2");
 110
 111         giUI_Width = gScreen->w;
 112         giUI_Height = gScreen->h;
 113         giUI_Pitch = gScreen->pitch;
 114
 115         SDL_EnableUNICODE(1);
 116
 117         for( ;; )
 118         {
 119                 while(SDL_PollEvent(&event))
 120                 {
 121                         switch(event.type)
 122                         {
 123                         case SDL_QUIT:
 124                                 AcessNative_Exit();
 125                                 return 0;
 126
 127                         case SDL_KEYDOWN:
 128                                 acess_sym = UI_GetAcessKeyFromSDL(event.key.keysym.sym,
 129                                         event.key.keysym.unicode);
 130
 131                                 if( gUI_KeyboardCallback )
 132                                         gUI_KeyboardCallback(acess_sym);
 133                                 break;
 134
 135                         case SDL_KEYUP:
 136                                 acess_sym = UI_GetAcessKeyFromSDL(event.key.keysym.sym,
 137                                         event.key.keysym.unicode);
 138
 139                                 if( gUI_KeyboardCallback )
 140                                         gUI_KeyboardCallback(0x80000000|acess_sym);
 141                                 break;
 142
 143                         default:
 144                                 break;
 145                         }
 146                 }
 147         }
 148 }
 149
 150 void UI_BlitBitmap(int DstX, int DstY, int SrcW, int SrcH, Uint32 *Bitmap)
 151 {
 152         SDL_Surface     *tmp;
 153         SDL_Rect        dstRect;
 154
 155         tmp = SDL_CreateRGBSurfaceFrom(Bitmap, SrcW, SrcH, 32, SrcW*4,
 156                 0xFF0000, 0x00FF00, 0x0000FF, 0xFF000000);
 157         SDL_SetAlpha(tmp, 0, SDL_ALPHA_OPAQUE);
 158
 159         dstRect.x = DstX;       dstRect.y = DstY;
 160
 161         SDL_BlitSurface(tmp, NULL, gScreen, &dstRect);
 162
 163         SDL_FreeSurface(tmp);
 164 }
 165
 166 void UI_BlitFramebuffer(int DstX, int DstY, int SrcX, int SrcY, int W, int H)
 167 {
 168         SDL_Rect        srcRect;
 169         SDL_Rect        dstRect;
 170
 171         srcRect.x = SrcX;       srcRect.y = SrcY;
 172         srcRect.w = W;  srcRect.h = H;
 173         dstRect.x = DstX;       dstRect.y = DstY;
 174
 175         SDL_BlitSurface(gScreen, &srcRect, gScreen, &dstRect);
 176 }
 177
 178 void UI_FillBitmap(int X, int Y, int W, int H, Uint32 Value)
 179 {
 180         SDL_Rect        dstRect;
 181
 182         dstRect.x = X;  dstRect.y = Y;
 183         dstRect.w = W;  dstRect.h = H;
 184
 185         SDL_FillRect(gScreen, &dstRect, Value);
 186 }
 187
 188 void UI_Redraw(void)
 189 {
 190         // No-Op, we're not using double buffering
 191 }