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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@devolution.com
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* Useful variables and functions from SDL_cursor.c */
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29 #include "SDL_mouse.h"
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30
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31 extern int SDL_CursorInit(Uint32 flags);
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32 extern void SDL_CursorPaletteChanged(void);
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33 extern void SDL_DrawCursor(SDL_Surface *screen);
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34 extern void SDL_DrawCursorNoLock(SDL_Surface *screen);
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35 extern void SDL_EraseCursor(SDL_Surface *screen);
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36 extern void SDL_EraseCursorNoLock(SDL_Surface *screen);
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37 extern void SDL_UpdateCursor(SDL_Surface *screen);
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38 extern void SDL_ResetCursor(void);
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39 extern void SDL_MoveCursor(int x, int y);
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40 extern void SDL_CursorQuit(void);
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41
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42 #define INLINE_MOUSELOCK
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43 #ifdef INLINE_MOUSELOCK
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44 /* Inline (macro) versions of the mouse lock functions */
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45 #include "SDL_mutex.h"
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46
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47 extern SDL_mutex *SDL_cursorlock;
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48
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49 #define SDL_LockCursor() \
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50 do { \
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51 if ( SDL_cursorlock ) { \
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52 SDL_mutexP(SDL_cursorlock); \
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53 } \
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54 } while ( 0 )
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55 #define SDL_UnlockCursor() \
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56 do { \
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57 if ( SDL_cursorlock ) { \
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58 SDL_mutexV(SDL_cursorlock); \
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59 } \
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60 } while ( 0 )
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61 #else
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62 extern void SDL_LockCursor(void);
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63 extern void SDL_UnlockCursor(void);
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64 #endif /* INLINE_MOUSELOCK */
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65
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66 /* Only for low-level mouse cursor drawing */
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67 extern SDL_Cursor *SDL_cursor;
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68 extern void SDL_MouseRect(SDL_Rect *area);
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69
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70 /* State definitions for the SDL cursor */
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71 #define CURSOR_VISIBLE 0x01
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72 #define CURSOR_USINGSW 0x10
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73 #define SHOULD_DRAWCURSOR(X) \
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74 (((X)&(CURSOR_VISIBLE|CURSOR_USINGSW)) == \
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75 (CURSOR_VISIBLE|CURSOR_USINGSW))
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76
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77 extern volatile int SDL_cursorstate;
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