1 files changed, 84 insertions, 0 deletions
diff --git a/lib/DDHidUsage.m b/lib/DDHidUsage.m
new file mode 100644
index 0000000..8fe2c11
--- /dev/null
+++ b/lib/DDHidUsage.m
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2007 Dave Dribin
+ * 
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#import "DDHidUsage.h"
+#import "DDHidUsageTables.h"
+
+@implementation DDHidUsage
+
++ (DDHidUsage *) usageWithUsagePage: (unsigned) usagePage
+                            usageId: (unsigned) usageId;
+{
+    return [[[self alloc] initWithUsagePage: usagePage usageId: usageId]
+        autorelease];
+}
+
+- (id) initWithUsagePage: (unsigned) usagePage
+                 usageId: (unsigned) usageId;
+{
+    self = [super init];
+    if (self == nil)
+        return nil;
+    
+    mUsagePage = usagePage;
+    mUsageId = usageId;
+    
+    return self;
+}
+
+- (unsigned) usagePage;
+{
+    return mUsagePage;
+}
+
+- (unsigned) usageId;
+{
+    return mUsageId;
+}
+
+- (NSString *) usageName;
+{
+    DDHidUsageTables * usageTables = [DDHidUsageTables standardUsageTables];
+    return
+        [usageTables descriptionForUsagePage: mUsagePage
+                                       usage: mUsageId];
+}
+
+- (NSString *) usageNameWithIds;
+{
+    return [NSString stringWithFormat: @"%@ (0x%04x : 0x%04x)",
+        [self usageName], mUsagePage, mUsageId];
+}
+
+- (NSString *) description;
+{
+    return [NSString stringWithFormat: @"HID Usage: %@", [self usageName]];
+}
+
+- (BOOL) isEqualToUsagePage: (unsigned) usagePage usageId: (unsigned) usageId;
+{
+    return ((mUsagePage == usagePage) && (mUsageId == usageId));
+}
+
+@end