Try listening to media keys

Use Peter Maurer's mechanism for getting media key events. Code taken
from a Rogue Amoeba article.

My hope was that this would allow us to intercept Bluetooth headphone
key presses. It didn't. I'll likely be reverting this code.

3 files changed, 42 insertions, 1 deletions

diff --git a/DomeKey/DKApplication.h b/DomeKey/DKApplication.h
index 6a92266..70ccd3a 100644
--- a/DomeKey/DKApplication.h
+++ b/DomeKey/DKApplication.h
@@ -10,4 +10,6 @@
 
 @interface DKApplication : NSApplication
 
+- (void)mediaKeyEvent:(int)key state:(BOOL)state repeat:(BOOL)repeat;
+
 @end
diff --git a/DomeKey/DKApplication.m b/DomeKey/DKApplication.m
index 9449d06..4098ca7 100644
--- a/DomeKey/DKApplication.m
+++ b/DomeKey/DKApplication.m
@@ -10,4 +10,42 @@
 
 @implementation DKApplication
 
+// https://weblog.rogueamoeba.com/2007/09/29/
+- (void)sendEvent:(NSEvent *)theEvent
+{
+    if ([theEvent type] == NSSystemDefined && [theEvent subtype] == 8) {
+        int key_code = (([theEvent data1] & 0xFFFF0000) >> 16);
+        int key_flags = ([theEvent data1] & 0x0000FFFF);
+        int key_state = (((key_flags & 0xFF00) >> 8)) == 0xA;
+        int key_repeat = (key_flags & 0x1);
+
+        [self mediaKeyEvent:key_code state:key_state repeat:key_repeat];
+    }
+
+    [super sendEvent:theEvent];
+}
+
+// https://weblog.rogueamoeba.com/2007/09/29/
+- (void)mediaKeyEvent:(int)key state:(BOOL)state repeat:(BOOL)repeat
+{
+    BOOL pressed_and_released = !state;
+
+    if (pressed_and_released) {
+        switch (key) {
+        case NX_KEYTYPE_PLAY:
+            NSLog(@"Play");
+
+            break;
+        case NX_KEYTYPE_FAST:
+            NSLog(@"Fast");
+
+            break;
+        case NX_KEYTYPE_REWIND:
+            NSLog(@"Rewind");
+
+            break;
+        }
+    }
+}
+
 @end
diff --git a/DomeKey/main.m b/DomeKey/main.m
index aa2c66f..825e600 100644
--- a/DomeKey/main.m
+++ b/DomeKey/main.m
@@ -7,6 +7,7 @@
 //
 
 #import <Foundation/Foundation.h>
+#import "DKApplication.h"
 #import "AppDelegate.h"
 #import "Mappings.h"
 #import "dome_key_map.h"
@@ -18,7 +19,7 @@ int main(int argc, const char * argv[]) {
         return [Mappings dispatchReload];
     } else if (config->args.daemon) {
         @autoreleasepool {
-            [NSApplication sharedApplication];
+            [DKApplication sharedApplication];
             AppDelegate *app = [[AppDelegate alloc] init];
             [NSApp setDelegate:app];