| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | This library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | #include "SDL_config.h" |
| 23 | |
| 24 | /* Useful variables and functions from SDL_cursor.c */ |
| 25 | #include "SDL_mouse.h" |
| 26 | |
| 27 | extern int SDL_CursorInit(Uint32 flags); |
| 28 | extern void SDL_CursorPaletteChanged(void); |
| 29 | extern void SDL_DrawCursor(SDL_Surface *screen); |
| 30 | extern void SDL_DrawCursorNoLock(SDL_Surface *screen); |
| 31 | extern void SDL_EraseCursor(SDL_Surface *screen); |
| 32 | extern void SDL_EraseCursorNoLock(SDL_Surface *screen); |
| 33 | extern void SDL_UpdateCursor(SDL_Surface *screen); |
| 34 | extern void SDL_ResetCursor(void); |
| 35 | extern void SDL_MoveCursor(int x, int y); |
| 36 | extern void SDL_CursorQuit(void); |
| 37 | |
| 38 | #define INLINE_MOUSELOCK |
| 39 | #ifdef INLINE_MOUSELOCK |
| 40 | /* Inline (macro) versions of the mouse lock functions */ |
| 41 | #include "SDL_mutex.h" |
| 42 | |
| 43 | extern SDL_mutex *SDL_cursorlock; |
| 44 | |
| 45 | #define SDL_LockCursor() \ |
| 46 | do { \ |
| 47 | if ( SDL_cursorlock ) { \ |
| 48 | SDL_mutexP(SDL_cursorlock); \ |
| 49 | } \ |
| 50 | } while ( 0 ) |
| 51 | #define SDL_UnlockCursor() \ |
| 52 | do { \ |
| 53 | if ( SDL_cursorlock ) { \ |
| 54 | SDL_mutexV(SDL_cursorlock); \ |
| 55 | } \ |
| 56 | } while ( 0 ) |
| 57 | #else |
| 58 | extern void SDL_LockCursor(void); |
| 59 | extern void SDL_UnlockCursor(void); |
| 60 | #endif /* INLINE_MOUSELOCK */ |
| 61 | |
| 62 | /* Only for low-level mouse cursor drawing */ |
| 63 | extern SDL_Cursor *SDL_cursor; |
| 64 | extern void SDL_MouseRect(SDL_Rect *area); |
| 65 | |
| 66 | /* State definitions for the SDL cursor */ |
| 67 | #define CURSOR_VISIBLE 0x01 |
| 68 | #define CURSOR_USINGSW 0x10 |
| 69 | #define SHOULD_DRAWCURSOR(X) \ |
| 70 | (((X)&(CURSOR_VISIBLE|CURSOR_USINGSW)) == \ |
| 71 | (CURSOR_VISIBLE|CURSOR_USINGSW)) |
| 72 | |
| 73 | extern volatile int SDL_cursorstate; |