source/graphics/cocoa/cocoadisplay.m

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