#import "ContextUpdater.h" #import <pthread.h> // #define VERBOSE_ON 1 #ifdef VERBOSE_ON #define DBG_PRINT(...) NSLog(@ __VA_ARGS__) // #define DBG_PRINT(...) fprintf(stderr, __VA_ARGS__); fflush(stderr) #else #define DBG_PRINT(...) #endif #ifndef CGL_VERSION_1_3 #warning this SDK doesn't support OpenGL profile #endif @implementation ContextUpdater { } - (void) update:(NSNotification *)notification { pthread_mutex_lock(&resourceLock); NSRect r = [view frame]; if(viewRect.origin.x != r.origin.x || viewRect.origin.y != r.origin.y || viewRect.size.width != r.size.width || viewRect.size.height != r.size.height) { viewUpdated = TRUE; viewRect = r; } pthread_mutex_unlock(&resourceLock); } - (BOOL) needsUpdate { BOOL r; pthread_mutex_lock(&resourceLock); r = viewUpdated; viewUpdated = FALSE; pthread_mutex_unlock(&resourceLock); return r; } - (id) initWithContext:(NSOpenGLContext *)context view: (NSView *)nsView { DBG_PRINT("ContextUpdater::init.0 view %p, ctx %p\n", view, ctx); pthread_mutex_init(&resourceLock, NULL); // fast non-recursive ctx = context; view = nsView; [ctx retain]; [view retain]; viewRect = [view frame]; viewUpdated = TRUE; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(update:) name:NSViewGlobalFrameDidChangeNotification object: view]; DBG_PRINT("ContextUpdater::init.X\n"); return [super init]; } - (void) dealloc { DBG_PRINT("ContextUpdater::dealloc.0 view %p, ctx %p\n", view, ctx); [[NSNotificationCenter defaultCenter] removeObserver:self]; [view release]; [ctx release]; pthread_mutex_destroy(&resourceLock); DBG_PRINT("ContextUpdater::dealloc.X\n"); [super dealloc]; } @end