Mercurial > sdl-ios-xcode
view src/video/x11/SDL_x11dyn.c @ 4249:429c8dd3175d SDL-1.2
Fixed bug #713
Don't clamp the mouse coordinates to the video surface size, instead clamp them to the last known window size.
This allows users to get the correct mouse coordinates even if they don't call SDL_SetVideoMode() in response to an SDL_VIDEORESIZE event (used as a hack to retain the OpenGL context on Windows and Linux after a window resize)
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 27 Sep 2009 05:18:43 +0000 |
parents | a1b03ba2fcd0 |
children |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2009 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" #define DEBUG_DYNAMIC_X11 0 #include "SDL_x11dyn.h" #if DEBUG_DYNAMIC_X11 #include <stdio.h> #endif #ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC #include "SDL_name.h" #include "SDL_loadso.h" typedef struct { void *lib; const char *libname; } x11dynlib; #ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC #define SDL_VIDEO_DRIVER_X11_DYNAMIC NULL #endif #ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT #define SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT NULL #endif #ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XRENDER #define SDL_VIDEO_DRIVER_X11_DYNAMIC_XRENDER NULL #endif #ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR #define SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR NULL #endif static x11dynlib x11libs[] = { { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC }, { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT }, { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XRENDER }, { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR }, }; static void X11_GetSym(const char *fnname, int *rc, void **fn) { int i; for (i = 0; i < SDL_TABLESIZE(x11libs); i++) { if (x11libs[i].lib != NULL) { *fn = SDL_LoadFunction(x11libs[i].lib, fnname); if (*fn != NULL) break; } } #if DEBUG_DYNAMIC_X11 if (*fn != NULL) printf("X11: Found '%s' in %s (%p)\n", fnname, x11libs[i].libname, *fn); else printf("X11: Symbol '%s' NOT FOUND!\n", fnname); #endif if (*fn == NULL) *rc = 0; /* kill this module. */ } /* Define all the function pointers and wrappers... */ #define SDL_X11_MODULE(modname) #define SDL_X11_SYM(rc,fn,params,args,ret) \ static rc (*p##fn) params = NULL; \ rc fn params { ret p##fn args ; } #include "SDL_x11sym.h" #undef SDL_X11_MODULE #undef SDL_X11_SYM #endif /* SDL_VIDEO_DRIVER_X11_DYNAMIC */ /* Annoying varargs entry point... */ #ifdef X_HAVE_UTF8_STRING XIC (*pXCreateIC)(XIM,...) = NULL; char *(*pXGetICValues)(XIC, ...) = NULL; #endif /* These SDL_X11_HAVE_* flags are here whether you have dynamic X11 or not. */ #define SDL_X11_MODULE(modname) int SDL_X11_HAVE_##modname = 1; #define SDL_X11_SYM(rc,fn,params,args,ret) #include "SDL_x11sym.h" #undef SDL_X11_MODULE #undef SDL_X11_SYM static int x11_load_refcount = 0; void SDL_X11_UnloadSymbols(void) { #ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC /* Don't actually unload if more than one module is using the libs... */ if (x11_load_refcount > 0) { if (--x11_load_refcount == 0) { int i; /* set all the function pointers to NULL. */ #define SDL_X11_MODULE(modname) SDL_X11_HAVE_##modname = 1; #define SDL_X11_SYM(rc,fn,params,args,ret) p##fn = NULL; #include "SDL_x11sym.h" #undef SDL_X11_MODULE #undef SDL_X11_SYM #ifdef X_HAVE_UTF8_STRING pXCreateIC = NULL; pXGetICValues = NULL; #endif for (i = 0; i < SDL_TABLESIZE(x11libs); i++) { if (x11libs[i].lib != NULL) { SDL_UnloadObject(x11libs[i].lib); x11libs[i].lib = NULL; } } } } #endif } /* returns non-zero if all needed symbols were loaded. */ int SDL_X11_LoadSymbols(void) { int rc = 1; /* always succeed if not using Dynamic X11 stuff. */ #ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC /* deal with multiple modules (dga, x11, etc) needing these symbols... */ if (x11_load_refcount++ == 0) { int i; int *thismod = NULL; for (i = 0; i < SDL_TABLESIZE(x11libs); i++) { if (x11libs[i].libname != NULL) { x11libs[i].lib = SDL_LoadObject(x11libs[i].libname); } } #define SDL_X11_MODULE(modname) thismod = &SDL_X11_HAVE_##modname; #define SDL_X11_SYM(a,fn,x,y,z) X11_GetSym(#fn,thismod,(void**)&p##fn); #include "SDL_x11sym.h" #undef SDL_X11_MODULE #undef SDL_X11_SYM #ifdef X_HAVE_UTF8_STRING X11_GetSym("XCreateIC",&SDL_X11_HAVE_UTF8,(void **)&pXCreateIC); X11_GetSym("XGetICValues",&SDL_X11_HAVE_UTF8,(void **)&pXGetICValues); #endif if (SDL_X11_HAVE_BASEXLIB) { /* all required symbols loaded. */ SDL_ClearError(); } else { SDL_X11_UnloadSymbols(); /* in case something got loaded... */ rc = 0; } } #else #if DEBUG_DYNAMIC_X11 printf("X11: No dynamic X11 support in this build of SDL.\n"); #endif #ifdef X_HAVE_UTF8_STRING pXCreateIC = XCreateIC; pXGetICValues = XGetICValues; #endif #endif return rc; } /* end of SDL_x11dyn.c ... */