1/* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2012 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 27extern int SDL_CursorInit(Uint32 flags); 28extern void SDL_CursorPaletteChanged(void); 29extern void SDL_DrawCursor(SDL_Surface *screen); 30extern void SDL_DrawCursorNoLock(SDL_Surface *screen); 31extern void SDL_EraseCursor(SDL_Surface *screen); 32extern void SDL_EraseCursorNoLock(SDL_Surface *screen); 33extern void SDL_UpdateCursor(SDL_Surface *screen); 34extern void SDL_ResetCursor(void); 35extern void SDL_MoveCursor(int x, int y); 36extern 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 43extern 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 58extern void SDL_LockCursor(void); 59extern void SDL_UnlockCursor(void); 60#endif /* INLINE_MOUSELOCK */ 61 62/* Only for low-level mouse cursor drawing */ 63extern SDL_Cursor *SDL_cursor; 64extern 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 73extern volatile int SDL_cursorstate; 74