source/graphics/cocoa/cocoadisplay.m

   1 #import <AppKit/NSApplication.h>
   2 #import <Foundation/NSAutoReleasePool.h>
   3 #import <Foundation/NSRunLoop.h>
   4 #include "cocoadisplay.h"
   5
   6 void convert_event(NSEvent *, CocoaEvent *);
   7
   8 struct _CocoaDisplay
   9 {
  10         NSApplication *app;
  11         NSAutoreleasePool *arp;
  12         CFMutableArrayRef event_queue;
  13 };
  14
  15 const void *copy_event(CFAllocatorRef, const void *);
  16 void free_event(CFAllocatorRef, const void *);
  17
  18 CocoaDisplay *create_display()
  19 {
  20         CocoaDisplay *display = (CocoaDisplay *)malloc(sizeof(CocoaDisplay));
  21         display->arp = [[NSAutoreleasePool alloc] init];
  22         display->app = [NSApplication sharedApplication];
  23         // This makes windows appear when run from terminal
  24         if([display->app respondsToSelector:@selector(setActivationPolicy:)])
  25                 [display->app setActivationPolicy:NSApplicationActivationPolicyRegular];
  26         [display->app finishLaunching];
  27
  28         CFArrayCallBacks callbacks;
  29         callbacks.version = 0;
  30         callbacks.retain = copy_event;
  31         callbacks.release = free_event;
  32         callbacks.copyDescription = NULL;
  33         callbacks.equal = NULL;
  34         display->event_queue = CFArrayCreateMutable(NULL, 0, &callbacks);
  35
  36         return display;
  37 }
  38
  39 void destroy_display(CocoaDisplay *display)
  40 {
  41         CFRelease(display->event_queue);
  42         [display->arp release];
  43         free(display);
  44 }
  45
  46 void queue_event(CocoaDisplay *display, CocoaEvent *event)
  47 {
  48         CFArrayAppendValue(display->event_queue, event);
  49 }
  50
  51 bool get_event(CocoaDisplay *display, CocoaEvent *buf)
  52 {
  53         if(CFArrayGetCount(display->event_queue))
  54         {
  55                 *buf = *(const CocoaEvent *)CFArrayGetValueAtIndex(display->event_queue, 0);
  56                 CFArrayRemoveValueAtIndex(display->event_queue, 0);
  57                 return true;
  58         }
  59
  60         NSEvent *event = [display->app nextEventMatchingMask:NSAnyEventMask untilDate:nil inMode:NSDefaultRunLoopMode dequeue:YES];
  61         if(event)
  62         {
  63                 [event retain];
  64                 [display->app sendEvent:event];
  65                 convert_event(event, buf);
  66                 [event release];
  67                 return true;
  68         }
  69
  70         return false;
  71 }
  72
  73 const void *copy_event(CFAllocatorRef allocator, const void *event)
  74 {
  75         void *copy = CFAllocatorAllocate(allocator, sizeof(CocoaEvent), 0);
  76         memcpy(copy, event, sizeof(CocoaEvent));
  77         return copy;
  78 }
  79
  80 void free_event(CFAllocatorRef allocator, const void *event)
  81 {
  82         CFAllocatorDeallocate(allocator, (void *)event);
  83 }