sdl_macevents.c

Simple DirectMedia Layer - Simple DirectMedia Layer 是一个跨平台的多媒体库设计用来提供快速图形framebuffer和音频驱动。应用MPEG为软件

		SDL_PrivateKeyboard(SDL_PRESSED,
			TranslateKey((event.message&keyCodeMask)>>8
		                     event.modifiers, &keysym, 1));
	  }
	  break;
	  case keyUp: {
		SDL_keysym keysym;

		SDL_PrivateKeyboard(SDL_RELEASED,
			TranslateKey((event.message&keyCodeMask)>>8
		                     event.modifiers, &keysym, 0));
	  }
	  break;
#endif
	  case updateEvt: {
		BeginUpdate(SDL_Window);
		if ( (SDL_VideoSurface->flags & SDL_HWSURFACE) ==
						SDL_SWSURFACE ) {
			SDL_UpdateRect(SDL_VideoSurface, 0, 0, 0, 0);
		}
		EndUpdate(SDL_Window);
	  }
	  /* If this was an update event for the SIOUX console, we return 0
             in order to stop an endless series of updates being triggered.
	  */
	  if ( (WindowRef) event.message != SDL_Window ) {
		return 0;
	  }
	  break;
	  case activateEvt: {
		Mac_HandleActivate(!!(event.modifiers & activeFlag));
	  }
	  break;
	  case diskEvt: {
#if TARGET_API_MAC_CARBON
		/* What are we supposed to do? */;
#else
		if ( ((event.message>>16)&0xFFFF) != noErr ) {
			Point spot;
			SetPt(&spot, 0x0070, 0x0050);
			DIBadMount(spot, event.message);
		}
#endif
	  }
	  break;
	  case osEvt: {
		switch ((event.message>>24) & 0xFF) {
#if 0 /* Handled above the switch statement */
		  case mouseMovedMessage: {
			myGlobalToLocal(this, &event.where);
			SDL_PrivateMouseMotion(0, 0,
					event.where.h, event.where.v);
		  }
		  break;
#endif /* 0 */
		  case suspendResumeMessage: {
			Mac_HandleActivate(!!(event.message & resumeFlag));
		  }
		  break;
		}
	  }
	  break;
	  default: {
		;
	  }
	  break;
	}
	return (event.what != nullEvent);
}


void Mac_PumpEvents(_THIS)
{
	/* Process pending MacOS events */
	while ( Mac_HandleEvents(this, 0) ) {
		/* Loop and check again */;
	}
}

void Mac_InitOSKeymap(_THIS)
{
	const void *KCHRPtr;
	UInt32 state;
	UInt32 value;
	int i;
	int world = SDLK_WORLD_0;

	/* Map the MAC keysyms */
	for ( i=0; i<SDL_TABLESIZE(MAC_keymap); ++i )
		MAC_keymap[i] = SDLK_UNKNOWN;

	/* Defined MAC_* constants */
	MAC_keymap[MK_ESCAPE] = SDLK_ESCAPE;
	MAC_keymap[MK_F1] = SDLK_F1;
	MAC_keymap[MK_F2] = SDLK_F2;
	MAC_keymap[MK_F3] = SDLK_F3;
	MAC_keymap[MK_F4] = SDLK_F4;
	MAC_keymap[MK_F5] = SDLK_F5;
	MAC_keymap[MK_F6] = SDLK_F6;
	MAC_keymap[MK_F7] = SDLK_F7;
	MAC_keymap[MK_F8] = SDLK_F8;
	MAC_keymap[MK_F9] = SDLK_F9;
	MAC_keymap[MK_F10] = SDLK_F10;
	MAC_keymap[MK_F11] = SDLK_F11;
	MAC_keymap[MK_F12] = SDLK_F12;
	MAC_keymap[MK_PRINT] = SDLK_PRINT;
	MAC_keymap[MK_SCROLLOCK] = SDLK_SCROLLOCK;
	MAC_keymap[MK_PAUSE] = SDLK_PAUSE;
	MAC_keymap[MK_POWER] = SDLK_POWER;
	MAC_keymap[MK_BACKQUOTE] = SDLK_BACKQUOTE;
	MAC_keymap[MK_1] = SDLK_1;
	MAC_keymap[MK_2] = SDLK_2;
	MAC_keymap[MK_3] = SDLK_3;
	MAC_keymap[MK_4] = SDLK_4;
	MAC_keymap[MK_5] = SDLK_5;
	MAC_keymap[MK_6] = SDLK_6;
	MAC_keymap[MK_7] = SDLK_7;
	MAC_keymap[MK_8] = SDLK_8;
	MAC_keymap[MK_9] = SDLK_9;
	MAC_keymap[MK_0] = SDLK_0;
	MAC_keymap[MK_MINUS] = SDLK_MINUS;
	MAC_keymap[MK_EQUALS] = SDLK_EQUALS;
	MAC_keymap[MK_BACKSPACE] = SDLK_BACKSPACE;
	MAC_keymap[MK_INSERT] = SDLK_INSERT;
	MAC_keymap[MK_HOME] = SDLK_HOME;
	MAC_keymap[MK_PAGEUP] = SDLK_PAGEUP;
	MAC_keymap[MK_NUMLOCK] = SDLK_NUMLOCK;
	MAC_keymap[MK_KP_EQUALS] = SDLK_KP_EQUALS;
	MAC_keymap[MK_KP_DIVIDE] = SDLK_KP_DIVIDE;
	MAC_keymap[MK_KP_MULTIPLY] = SDLK_KP_MULTIPLY;
	MAC_keymap[MK_TAB] = SDLK_TAB;
	MAC_keymap[MK_q] = SDLK_q;
	MAC_keymap[MK_w] = SDLK_w;
	MAC_keymap[MK_e] = SDLK_e;
	MAC_keymap[MK_r] = SDLK_r;
	MAC_keymap[MK_t] = SDLK_t;
	MAC_keymap[MK_y] = SDLK_y;
	MAC_keymap[MK_u] = SDLK_u;
	MAC_keymap[MK_i] = SDLK_i;
	MAC_keymap[MK_o] = SDLK_o;
	MAC_keymap[MK_p] = SDLK_p;
	MAC_keymap[MK_LEFTBRACKET] = SDLK_LEFTBRACKET;
	MAC_keymap[MK_RIGHTBRACKET] = SDLK_RIGHTBRACKET;
	MAC_keymap[MK_BACKSLASH] = SDLK_BACKSLASH;
	MAC_keymap[MK_DELETE] = SDLK_DELETE;
	MAC_keymap[MK_END] = SDLK_END;
	MAC_keymap[MK_PAGEDOWN] = SDLK_PAGEDOWN;
	MAC_keymap[MK_KP7] = SDLK_KP7;
	MAC_keymap[MK_KP8] = SDLK_KP8;
	MAC_keymap[MK_KP9] = SDLK_KP9;
	MAC_keymap[MK_KP_MINUS] = SDLK_KP_MINUS;
	MAC_keymap[MK_CAPSLOCK] = SDLK_CAPSLOCK;
	MAC_keymap[MK_a] = SDLK_a;
	MAC_keymap[MK_s] = SDLK_s;
	MAC_keymap[MK_d] = SDLK_d;
	MAC_keymap[MK_f] = SDLK_f;
	MAC_keymap[MK_g] = SDLK_g;
	MAC_keymap[MK_h] = SDLK_h;
	MAC_keymap[MK_j] = SDLK_j;
	MAC_keymap[MK_k] = SDLK_k;
	MAC_keymap[MK_l] = SDLK_l;
	MAC_keymap[MK_SEMICOLON] = SDLK_SEMICOLON;
	MAC_keymap[MK_QUOTE] = SDLK_QUOTE;
	MAC_keymap[MK_RETURN] = SDLK_RETURN;
	MAC_keymap[MK_KP4] = SDLK_KP4;
	MAC_keymap[MK_KP5] = SDLK_KP5;
	MAC_keymap[MK_KP6] = SDLK_KP6;
	MAC_keymap[MK_KP_PLUS] = SDLK_KP_PLUS;
	MAC_keymap[MK_LSHIFT] = SDLK_LSHIFT;
	MAC_keymap[MK_z] = SDLK_z;
	MAC_keymap[MK_x] = SDLK_x;
	MAC_keymap[MK_c] = SDLK_c;
	MAC_keymap[MK_v] = SDLK_v;
	MAC_keymap[MK_b] = SDLK_b;
	MAC_keymap[MK_n] = SDLK_n;
	MAC_keymap[MK_m] = SDLK_m;
	MAC_keymap[MK_COMMA] = SDLK_COMMA;
	MAC_keymap[MK_PERIOD] = SDLK_PERIOD;
	MAC_keymap[MK_SLASH] = SDLK_SLASH;
#if 0	/* These are the same as the left versions - use left by default */
	MAC_keymap[MK_RSHIFT] = SDLK_RSHIFT;
#endif
	MAC_keymap[MK_UP] = SDLK_UP;
	MAC_keymap[MK_KP1] = SDLK_KP1;
	MAC_keymap[MK_KP2] = SDLK_KP2;
	MAC_keymap[MK_KP3] = SDLK_KP3;
	MAC_keymap[MK_KP_ENTER] = SDLK_KP_ENTER;
	MAC_keymap[MK_LCTRL] = SDLK_LCTRL;
	MAC_keymap[MK_LALT] = SDLK_LALT;
	MAC_keymap[MK_LMETA] = SDLK_LMETA;
	MAC_keymap[MK_SPACE] = SDLK_SPACE;
#if 0	/* These are the same as the left versions - use left by default */
	MAC_keymap[MK_RMETA] = SDLK_RMETA;
	MAC_keymap[MK_RALT] = SDLK_RALT;
	MAC_keymap[MK_RCTRL] = SDLK_RCTRL;
#endif
	MAC_keymap[MK_LEFT] = SDLK_LEFT;
	MAC_keymap[MK_DOWN] = SDLK_DOWN;
	MAC_keymap[MK_RIGHT] = SDLK_RIGHT;
	MAC_keymap[MK_KP0] = SDLK_KP0;
	MAC_keymap[MK_KP_PERIOD] = SDLK_KP_PERIOD;

#if defined(__APPLE__) && defined(__MACH__)
	/* Wierd, these keys are on my iBook under MacOS X
	   Note that the left arrow keysym is the same as left ctrl!?
	 */
	MAC_keymap[MK_IBOOK_ENTER] = SDLK_KP_ENTER;
	MAC_keymap[MK_IBOOK_RIGHT] = SDLK_RIGHT;
	MAC_keymap[MK_IBOOK_DOWN] = SDLK_DOWN;
	MAC_keymap[MK_IBOOK_UP] = SDLK_UP;
	MAC_keymap[MK_IBOOK_LEFT] = SDLK_LEFT;
#endif /* MacOS X */

	/* Up there we setup a static scancode->keysym map. However, it will not
	 * work very well on international keyboard. Hence we now query MacOS
	 * for its own keymap to adjust our own mapping table. However, this is
	 * bascially only useful for ascii char keys. This is also the reason
	 * why we keep the static table, too.
	 */
	
	/* Get a pointer to the systems cached KCHR */
	KCHRPtr = (void *)GetScriptManagerVariable(smKCHRCache);
	if (KCHRPtr)
	{
		/* Loop over all 127 possible scan codes */
		for (i = 0; i < 0x7F; i++)
		{
			/* We pretend a clean start to begin with (i.e. no dead keys active */
			state = 0;
			
			/* Now translate the key code to a key value */
			value = KeyTranslate(KCHRPtr, i, &state) & 0xff;
			
			/* If the state become 0, it was a dead key. We need to translate again,
			passing in the new state, to get the actual key value */
			if (state != 0)
				value = KeyTranslate(KCHRPtr, i, &state) & 0xff;
			
			/* Now we should have an ascii value, or 0. Try to figure out to which SDL symbol it maps */
			if (value >= 128)	 /* Some non-ASCII char, map it to SDLK_WORLD_* */
				MAC_keymap[i] = world++;
			else if (value >= 32)	 /* non-control ASCII char */
				MAC_keymap[i] = value;
		}
	}
	
	/* The keypad codes are re-setup here, because the loop above cannot
	 * distinguish between a key on the keypad and a regular key. We maybe
	 * could get around this problem in another fashion: NSEvent's flags
	 * include a "NSNumericPadKeyMask" bit; we could check that and modify
	 * the symbol we return on the fly. However, this flag seems to exhibit
	 * some weird behaviour related to the num lock key
	 */
	MAC_keymap[MK_KP0] = SDLK_KP0;
	MAC_keymap[MK_KP1] = SDLK_KP1;
	MAC_keymap[MK_KP2] = SDLK_KP2;
	MAC_keymap[MK_KP3] = SDLK_KP3;
	MAC_keymap[MK_KP4] = SDLK_KP4;
	MAC_keymap[MK_KP5] = SDLK_KP5;
	MAC_keymap[MK_KP6] = SDLK_KP6;
	MAC_keymap[MK_KP7] = SDLK_KP7;
	MAC_keymap[MK_KP8] = SDLK_KP8;
	MAC_keymap[MK_KP9] = SDLK_KP9;
	MAC_keymap[MK_KP_MINUS] = SDLK_KP_MINUS;
	MAC_keymap[MK_KP_PLUS] = SDLK_KP_PLUS;
	MAC_keymap[MK_KP_PERIOD] = SDLK_KP_PERIOD;
	MAC_keymap[MK_KP_EQUALS] = SDLK_KP_EQUALS;
	MAC_keymap[MK_KP_DIVIDE] = SDLK_KP_DIVIDE;
	MAC_keymap[MK_KP_MULTIPLY] = SDLK_KP_MULTIPLY;
	MAC_keymap[MK_KP_ENTER] = SDLK_KP_ENTER;
}

static SDL_keysym *TranslateKey(int scancode, int modifiers,
                                SDL_keysym *keysym, int pressed)
{
	/* Set the keysym information */
	keysym->scancode = scancode;
	keysym->sym = MAC_keymap[keysym->scancode];
	keysym->mod = KMOD_NONE;
	keysym->unicode = 0;
	if ( pressed && SDL_TranslateUNICODE ) {
		static unsigned long state = 0;
		static Ptr keymap = nil;
		Ptr new_keymap;

		/* Get the current keyboard map resource */
		new_keymap = (Ptr)GetScriptManagerVariable(smKCHRCache);
		if ( new_keymap != keymap ) {
			keymap = new_keymap;
			state = 0;
		}
		keysym->unicode = KeyTranslate(keymap,
			keysym->scancode|modifiers, &state) & 0xFFFF;
	}
	return(keysym);
}

void Mac_InitEvents(_THIS)
{
	/* Create apple menu bar */
	apple_menu = GetMenu(mApple);
	if ( apple_menu != nil ) {
		AppendResMenu(apple_menu, 'DRVR');
		InsertMenu(apple_menu, 0);
	}
	DrawMenuBar();

	/* Get rid of spurious events at startup */
	FlushEvents(everyEvent, 0);
	
	/* Allow every event but keyrepeat */
	SetEventMask(everyEvent & ~autoKeyMask);
}

void Mac_QuitEvents(_THIS)
{
	ClearMenuBar();
	if ( apple_menu != nil ) {
		ReleaseResource((char **)apple_menu);
	}

	/* Clean up pending events */
	FlushEvents(everyEvent, 0);
}

static void Mac_DoAppleMenu(_THIS, long choice)
{
#if !TARGET_API_MAC_CARBON  /* No Apple menu in OS X */
	short menu, item;

	item = (choice&0xFFFF);
	choice >>= 16;
	menu = (choice&0xFFFF);
	
	switch (menu) {
		case mApple: {
			switch (item) {
				case iAbout: {
					/* Run the about box */;
				}
				break;
				default: {
					Str255 name;
					
					GetMenuItemText(apple_menu, item, name);
					OpenDeskAcc(name);
				}
				break;
			}
		}
		break;
		default: {
			/* Ignore other menus */;
		}
	}
#endif /* !TARGET_API_MAC_CARBON */
}

#if !TARGET_API_MAC_CARBON
/* Since we don't initialize QuickDraw, we need to get a pointer to qd */
QDGlobals *theQD = NULL;

/* Exported to the macmain code */
void SDL_InitQuickDraw(struct QDGlobals *the_qd)
{
	theQD = the_qd;
}
#endif