sdl_ph_events.c

SDL库 在进行视频显示程序spcaview安装时必须的库文件

                        current_overlay->hwdata->locked=1;
                        src.x = 0;
                        src.y = 0;
                        src.w = current_overlay->w;
                        src.y = current_overlay->h;
                        dst.x=current_overlay->hwdata->CurrentViewPort.pos.x;
                        dst.y=current_overlay->hwdata->CurrentViewPort.pos.y;
                        dst.w=current_overlay->hwdata->CurrentViewPort.size.w;
                        dst.h=current_overlay->hwdata->CurrentViewPort.size.h;
                        current_overlay->hwdata->forcedredraw=1;
                        error=ph_DisplayYUVOverlay(this, current_overlay, &src, &dst);
                        if (!error)
                        {
                            current_overlay->hwdata->forcedredraw=0;
                            current_overlay->hwdata->locked=lockedstate;
                        }
                    }
                }
            }
        }
	break;

        case Ph_EV_KEY:
        {
            SDL_keysym keysym;

            posted = 0;

            keyEvent = PhGetData(phevent);

            if (Pk_KF_Key_Down & keyEvent->key_flags)
            {
                /* split the wheel events from real key events */
                if ((keyEvent->key_cap==Pk_Up) && (keyEvent->key_scan==0) && ((keyEvent->key_flags & Pk_KF_Scan_Valid)==Pk_KF_Scan_Valid))
                {
                   posted = SDL_PrivateMouseButton(SDL_PRESSED, SDL_BUTTON_WHEELUP, 0, 0);
                   break;
                }
                if ((keyEvent->key_cap==Pk_Down) && (keyEvent->key_scan==0) && ((keyEvent->key_flags & Pk_KF_Scan_Valid)==Pk_KF_Scan_Valid))
                {
                   posted = SDL_PrivateMouseButton(SDL_PRESSED, SDL_BUTTON_WHEELDOWN, 0, 0);
                   break;
                }
                posted = SDL_PrivateKeyboard(SDL_PRESSED, ph_TranslateKey(keyEvent, &keysym));
            }
            else /* must be key release */
            {
                /* split the wheel events from real key events */
                if ((keyEvent->key_cap==Pk_Up) && (keyEvent->key_scan==0) && ((keyEvent->key_flags & Pk_KF_Scan_Valid)==Pk_KF_Scan_Valid))
                {
                   posted = SDL_PrivateMouseButton(SDL_RELEASED, SDL_BUTTON_WHEELUP, 0, 0);
                   break;
                }
                if ((keyEvent->key_cap==Pk_Down) && (keyEvent->key_scan==0) && ((keyEvent->key_flags & Pk_KF_Scan_Valid)==Pk_KF_Scan_Valid))
                {
                   posted = SDL_PrivateMouseButton(SDL_RELEASED, SDL_BUTTON_WHEELDOWN, 0, 0);
                   break;
                }
                posted = SDL_PrivateKeyboard(SDL_RELEASED, ph_TranslateKey( keyEvent, &keysym));
            }
        }
        break;
        
        case Ph_EV_INFO:
        {
           if (phevent->subtype==Ph_OFFSCREEN_INVALID)
           {
              unsigned long* EvInfoData;

              EvInfoData=(unsigned long*)PhGetData(phevent);

              switch (*EvInfoData)
              {
                 case Pg_VIDEO_MODE_SWITCHED:
                      {
                      }
                      break;
                 case Pg_ENTERED_DIRECT:
                      {
                      }
                      break;
                 case Pg_EXITED_DIRECT:
                      {
                      }
                      break;
                 case Pg_DRIVER_STARTED:
                      {
                      }
                      break;
              }
           }
        }
        break;
    }

    return(posted);
}

/* perform a blocking read if no events available */
int ph_Pending(_THIS)
{
    /* Flush the display connection and look to see if events are queued */
    PgFlush();

    while (1)
    {
        switch(PhEventPeek(phevent, EVENT_SIZE))
        {
            case Ph_EVENT_MSG:
                 return 1;
            case -1:
                 SDL_SetError("ph_Pending(): PhEventNext failed.\n");
                 return 0;
            default:
                 return 0;
        }
    }

    /* Oh well, nothing is ready .. */
    return(0);
}

void ph_PumpEvents(_THIS)
{
    /* Flush the display connection and look to see if events are queued */
    PgFlush();

    while (ph_Pending(this))
    {
        PtEventHandler(phevent);
        ph_DispatchEvent(this);
    }
}

void ph_InitKeymap(void)
{
    int i;

    /* Odd keys used in international keyboards */
    for (i=0; i<SDL_arraysize(ODD_keymap); ++i)
    {
        ODD_keymap[i] = SDLK_UNKNOWN;
    }

    /* Map the miscellaneous keys */
    for (i=0; i<SDL_arraysize(MISC_keymap); ++i)
    {
        MISC_keymap[i] = SDLK_UNKNOWN;
    }

    MISC_keymap[Pk_BackSpace&0xFF] = SDLK_BACKSPACE;
    MISC_keymap[Pk_Tab&0xFF] = SDLK_TAB;
    MISC_keymap[Pk_Clear&0xFF] = SDLK_CLEAR;
    MISC_keymap[Pk_Return&0xFF] = SDLK_RETURN;
    MISC_keymap[Pk_Pause&0xFF] = SDLK_PAUSE;
    MISC_keymap[Pk_Escape&0xFF] = SDLK_ESCAPE;
    MISC_keymap[Pk_Delete&0xFF] = SDLK_DELETE;

    MISC_keymap[Pk_KP_0&0xFF] = SDLK_KP0;
    MISC_keymap[Pk_KP_1&0xFF] = SDLK_KP1;
    MISC_keymap[Pk_KP_2&0xFF] = SDLK_KP2;
    MISC_keymap[Pk_KP_3&0xFF] = SDLK_KP3;
    MISC_keymap[Pk_KP_4&0xFF] = SDLK_KP4;
    MISC_keymap[Pk_KP_5&0xFF] = SDLK_KP5;
    MISC_keymap[Pk_KP_6&0xFF] = SDLK_KP6;
    MISC_keymap[Pk_KP_7&0xFF] = SDLK_KP7;
    MISC_keymap[Pk_KP_8&0xFF] = SDLK_KP8;
    MISC_keymap[Pk_KP_9&0xFF] = SDLK_KP9;

    MISC_keymap[Pk_KP_Decimal&0xFF] = SDLK_KP_PERIOD;
    MISC_keymap[Pk_KP_Divide&0xFF] = SDLK_KP_DIVIDE;
    MISC_keymap[Pk_KP_Multiply&0xFF] = SDLK_KP_MULTIPLY;
    MISC_keymap[Pk_KP_Subtract&0xFF] = SDLK_KP_MINUS;
    MISC_keymap[Pk_KP_Add&0xFF] = SDLK_KP_PLUS;
    MISC_keymap[Pk_KP_Enter&0xFF] = SDLK_KP_ENTER;
    MISC_keymap[Pk_KP_Equal&0xFF] = SDLK_KP_EQUALS;

    MISC_keymap[Pk_Up&0xFF] = SDLK_UP;
    MISC_keymap[Pk_Down&0xFF] = SDLK_DOWN;
    MISC_keymap[Pk_Right&0xFF] = SDLK_RIGHT;
    MISC_keymap[Pk_Left&0xFF] = SDLK_LEFT;
    MISC_keymap[Pk_Insert&0xFF] = SDLK_INSERT;
    MISC_keymap[Pk_Home&0xFF] = SDLK_HOME;
    MISC_keymap[Pk_End&0xFF] = SDLK_END;
    MISC_keymap[Pk_Pg_Up&0xFF] = SDLK_PAGEUP;
    MISC_keymap[Pk_Pg_Down&0xFF] = SDLK_PAGEDOWN;

    MISC_keymap[Pk_F1&0xFF] = SDLK_F1;
    MISC_keymap[Pk_F2&0xFF] = SDLK_F2;
    MISC_keymap[Pk_F3&0xFF] = SDLK_F3;
    MISC_keymap[Pk_F4&0xFF] = SDLK_F4;
    MISC_keymap[Pk_F5&0xFF] = SDLK_F5;
    MISC_keymap[Pk_F6&0xFF] = SDLK_F6;
    MISC_keymap[Pk_F7&0xFF] = SDLK_F7;
    MISC_keymap[Pk_F8&0xFF] = SDLK_F8;
    MISC_keymap[Pk_F9&0xFF] = SDLK_F9;
    MISC_keymap[Pk_F10&0xFF] = SDLK_F10;
    MISC_keymap[Pk_F11&0xFF] = SDLK_F11;
    MISC_keymap[Pk_F12&0xFF] = SDLK_F12;
    MISC_keymap[Pk_F13&0xFF] = SDLK_F13;
    MISC_keymap[Pk_F14&0xFF] = SDLK_F14;
    MISC_keymap[Pk_F15&0xFF] = SDLK_F15;

    MISC_keymap[Pk_Num_Lock&0xFF] = SDLK_NUMLOCK;
    MISC_keymap[Pk_Caps_Lock&0xFF] = SDLK_CAPSLOCK;
    MISC_keymap[Pk_Scroll_Lock&0xFF] = SDLK_SCROLLOCK;
    MISC_keymap[Pk_Shift_R&0xFF] = SDLK_RSHIFT;
    MISC_keymap[Pk_Shift_L&0xFF] = SDLK_LSHIFT;
    MISC_keymap[Pk_Control_R&0xFF] = SDLK_RCTRL;
    MISC_keymap[Pk_Control_L&0xFF] = SDLK_LCTRL;
    MISC_keymap[Pk_Alt_R&0xFF] = SDLK_RALT;
    MISC_keymap[Pk_Alt_L&0xFF] = SDLK_LALT;
    MISC_keymap[Pk_Meta_R&0xFF] = SDLK_RMETA;
    MISC_keymap[Pk_Meta_L&0xFF] = SDLK_LMETA;
    MISC_keymap[Pk_Super_L&0xFF] = SDLK_LSUPER;
    MISC_keymap[Pk_Super_R&0xFF] = SDLK_RSUPER;
    MISC_keymap[Pk_Mode_switch&0xFF] = SDLK_MODE; /* "Alt Gr" key    */

    MISC_keymap[Pk_Help&0xFF] = SDLK_HELP;
    MISC_keymap[Pk_Print&0xFF] = SDLK_PRINT;
    MISC_keymap[Pk_Break&0xFF] = SDLK_BREAK;
    MISC_keymap[Pk_Menu&0xFF] = SDLK_MENU;        /* Windows "Menu" key */

    MISC_keymap[Pk_Hyper_R&0xFF] = SDLK_RSUPER;   /* Right "Windows" */

    /* Left "Windows" key, but it can't be catched by application */
    MISC_keymap[Pk_Hyper_L&0xFF] = SDLK_LSUPER;
}

static unsigned long cap;

SDL_keysym *ph_TranslateKey(PhKeyEvent_t *key, SDL_keysym *keysym)
{
    /* 'sym' is set to the value of the key with modifiers applied to it.
       This member is valid only if Pk_KF_Sym_Valid is set in the key_flags.
       We will assume it is valid. */

    /* FIXME: This needs to check whether the cap & scancode is valid */

    cap = key->key_cap;

    switch (cap>>8)
    {
        case 0x00:  /* Latin 1 */
        case 0x01:  /* Latin 2 */
        case 0x02:  /* Latin 3 */
        case 0x03:  /* Latin 4 */
        case 0x04:  /* Katakana */
        case 0x05:  /* Arabic */
        case 0x06:  /* Cyrillic */
        case 0x07:  /* Greek */
        case 0x08:  /* Technical */
        case 0x0A:  /* Publishing */
        case 0x0C:  /* Hebrew */
        case 0x0D:  /* Thai */
                   keysym->sym = (SDLKey)(cap&0xFF);
                   /* Map capital letter syms to lowercase */
                   if ((keysym->sym >= 'A')&&(keysym->sym <= 'Z'))
                       keysym->sym += ('a'-'A');
                   break;
        case 0xF0:
                   keysym->sym = MISC_keymap[cap&0xFF];
                   break;
        default:
                   keysym->sym = SDLK_UNKNOWN;                
                   break;
    }

    keysym->scancode = key->key_scan;
    keysym->unicode = 0;

    if (SDL_TranslateUNICODE)
    {
        char utf8[MB_CUR_MAX];
        int utf8len;
        wchar_t unicode;

        switch (keysym->scancode)
        {
           /* Esc key */
           case 0x01: keysym->unicode = 27;
                      break;
           /* BackSpace key */
           case 0x0E: keysym->unicode = 127;
                      break;
           /* Enter key */
           case 0x1C: keysym->unicode = 10;
                      break;
           default:
                      utf8len = PhKeyToMb(utf8, key);
                      if (utf8len > 0)
                      {
                         utf8len = mbtowc(&unicode, utf8, utf8len);
                         if (utf8len > 0)
                         {
                             keysym->unicode = unicode;
                         }
                      }
                      break;
        }

    }

    return (keysym);
}

void ph_InitOSKeymap(_THIS)
{
    ph_InitKeymap();
}