source/graphics/cocoa/cocoadisplay.m

   1 #include <stdlib.h>
   2 #include <string.h>
   3 #import <AppKit/NSApplication.h>
   4 #import <AppKit/NSEvent.h>
   5 #import <Foundation/NSAutoReleasePool.h>
   6 #import <Foundation/NSRunLoop.h>
   7 #include "cocoadisplay.h"
   8
   9 void convert_event(NSEvent *, CocoaEvent *);
  10
  11 struct _CocoaDisplay
  12 {
  13         NSApplication *app;
  14         NSAutoreleasePool *arp;
  15         CFMutableArrayRef event_queue;
  16 };
  17
  18 const void *copy_event(CFAllocatorRef, const void *);
  19 void free_event(CFAllocatorRef, const void *);
  20
  21 CocoaDisplay *create_display()
  22 {
  23         CocoaDisplay *display = (CocoaDisplay *)malloc(sizeof(CocoaDisplay));
  24         display->arp = [[NSAutoreleasePool alloc] init];
  25         display->app = [NSApplication sharedApplication];
  26 #if __MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
  27         // This makes windows appear when run from terminal
  28         if([display->app respondsToSelector:@selector(setActivationPolicy:)])
  29                 [display->app setActivationPolicy:NSApplicationActivationPolicyRegular];
  30 #endif
  31         [display->app finishLaunching];
  32
  33         CFArrayCallBacks callbacks;
  34         callbacks.version = 0;
  35         callbacks.retain = copy_event;
  36         callbacks.release = free_event;
  37         callbacks.copyDescription = NULL;
  38         callbacks.equal = NULL;
  39         display->event_queue = CFArrayCreateMutable(NULL, 0, &callbacks);
  40
  41         return display;
  42 }
  43
  44 void destroy_display(CocoaDisplay *display)
  45 {
  46         CFRelease(display->event_queue);
  47         [display->arp release];
  48         free(display);
  49 }
  50
  51 void queue_event(CocoaDisplay *display, CocoaEvent *event)
  52 {
  53         CFArrayAppendValue(display->event_queue, event);
  54 }
  55
  56 bool get_event(CocoaDisplay *display, CocoaEvent *buf)
  57 {
  58         if(CFArrayGetCount(display->event_queue))
  59         {
  60                 *buf = *(const CocoaEvent *)CFArrayGetValueAtIndex(display->event_queue, 0);
  61                 CFArrayRemoveValueAtIndex(display->event_queue, 0);
  62                 return true;
  63         }
  64
  65         NSEvent *event = [display->app nextEventMatchingMask:NSAnyEventMask untilDate:nil inMode:NSDefaultRunLoopMode dequeue:YES];
  66         if(event)
  67         {
  68                 [event retain];
  69                 [display->app sendEvent:event];
  70                 convert_event(event, buf);
  71                 [event release];
  72                 return true;
  73         }
  74
  75         return false;
  76 }
  77
  78 const void *copy_event(CFAllocatorRef allocator, const void *event)
  79 {
  80         void *copy = CFAllocatorAllocate(allocator, sizeof(CocoaEvent), 0);
  81         memcpy(copy, event, sizeof(CocoaEvent));
  82         return copy;
  83 }
  84
  85 void free_event(CFAllocatorRef allocator, const void *event)
  86 {
  87         CFAllocatorDeallocate(allocator, (void *)event);
  88 }