CCButtons now utilize Float opacity instead of int opacity.

Former-commit-id: 59482cc

Author: jtwigg

cocos2d-ui/CCButton.m

@@ -84,8 +84,8 @@ - (id) initWithTitle:(NSString*) title spriteFrame:(CCSpriteFrame*) spriteFrame
     [self setBackgroundColor:[CCColor colorWithWhite:0.7 alpha:1] forState:CCControlStateHighlighted];
     [self setLabelColor:[CCColor colorWithWhite:0.7 alpha:1] forState:CCControlStateHighlighted];
 
-    [self setBackgroundOpacity:127 forState:CCControlStateDisabled];
-    [self setLabelOpacity:127 forState:CCControlStateDisabled];
+    [self setBackgroundOpacity:0.5f forState:CCControlStateDisabled];
+    [self setLabelOpacity:0.5f forState:CCControlStateDisabled];
 
     return self;
 }
@@ -489,15 +489,15 @@ - (void) setValue:(id)value forKey:(NSString *)key state:(CCControlState)state
 {
     if ([key isEqualToString:@"labelOpacity"])
     {
-        [self setLabelOpacity:[value intValue] forState:state];
+        [self setLabelOpacity:[value floatValue] forState:state];
     }
     else if ([key isEqualToString:@"labelColor"])
     {
         [self setLabelColor:value forState:state];
     }
     else if ([key isEqualToString:@"backgroundOpacity"])
     {
-        [self setBackgroundOpacity:[value intValue] forState:state];
+        [self setBackgroundOpacity:[value floatValue] forState:state];
     }
     else if ([key isEqualToString:@"backgroundColor"])
     {
@@ -513,15 +513,15 @@ - (id) valueForKey:(NSString *)key state:(CCControlState)state
 {
     if ([key isEqualToString:@"labelOpacity"])
     {
-        return [NSNumber numberWithUnsignedChar:[self labelOpacityForState:state]];
+        return [NSNumber numberWithFloat:[self labelOpacityForState:state]];
     }
     else if ([key isEqualToString:@"labelColor"])
     {
         return [self labelColorForState:state];
     }
     else if ([key isEqualToString:@"backgroundOpacity"])
     {
-        return [NSNumber numberWithUnsignedChar:[self backgroundOpacityForState:state]];
+        return [NSNumber numberWithFloat:[self backgroundOpacityForState:state]];
     }
     else if ([key isEqualToString:@"backgroundColor"])
     {