1 /* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2006 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 (at) libsdl.org 21 */ 22 #include "SDL_config.h" 23 24 /* Resize event handling code for SDL */ 25 26 #include "SDL_events.h" 27 #include "SDL_events_c.h" 28 #include "../video/SDL_sysvideo.h" 29 30 31 /* Keep the last resize event so we don't post duplicates */ 32 static struct { 33 int w; 34 int h; 35 } last_resize; 36 37 /* This is global for SDL_eventloop.c */ 38 int SDL_PrivateResize(int w, int h) 39 { 40 int posted; 41 SDL_Event events[32]; 42 43 /* See if this event would change the video surface */ 44 if ( !w || !h 45 #ifndef __OS2__ 46 || ((last_resize.w == w) && (last_resize.h == h)) 47 #endif 48 ) { 49 return(0); 50 } 51 last_resize.w = w; 52 last_resize.h = h; 53 if ( ! SDL_VideoSurface || 54 ((w == SDL_VideoSurface->w) && (h == SDL_VideoSurface->h)) ) { 55 return(0); 56 } 57 58 /* Pull out all old resize events */ 59 SDL_PeepEvents(events, sizeof(events)/sizeof(events[0]), 60 SDL_GETEVENT, SDL_VIDEORESIZEMASK); 61 62 /* Post the event, if desired */ 63 posted = 0; 64 if ( SDL_ProcessEvents[SDL_VIDEORESIZE] == SDL_ENABLE ) { 65 SDL_Event event; 66 event.type = SDL_VIDEORESIZE; 67 event.resize.w = w; 68 event.resize.h = h; 69 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { 70 posted = 1; 71 SDL_PushEvent(&event); 72 } 73 } 74 return(posted); 75 } 76
