Added option to only show keys which have a modifier

src/Carnac.Logic/MessageProvider.cs

@@ -37,7 +37,22 @@ public IObservable<Message> GetMessageStream()
                 .Where(c => c.HasCompletedValue)
                 .SelectMany(c => c.GetMessages())
                 .Scan(new Message(), (acc, key) => Message.MergeIfNeeded(acc, key))
-                .Where(m => !settings.DetectShortcutsOnly || m.IsShortcut);
+                .Where(m =>
+                {
+                    if (settings.DetectShortcutsOnly && settings.ShowOnlyModifiers)
+                    {
+                        return m.IsShortcut && m.IsModifier;
+                    }
+                    if (settings.DetectShortcutsOnly)
+                    {
+                        return m.IsShortcut;
+                    }
+                    if (settings.ShowOnlyModifiers)
+                    {
+                        return m.IsModifier;
+                    }
+                    return true;
+                });
         }
     }
 }

src/Carnac.Logic/Models/Message.cs

@@ -15,6 +15,7 @@ public sealed class Message
         readonly string shortcutName;
         readonly bool canBeMerged;
         readonly bool isShortcut;
+        readonly bool isModifier;
         readonly bool isDeleting;
         readonly DateTime lastMessage;
         readonly Message previous;
@@ -30,12 +31,13 @@ public Message(KeyPress key)
             processName = key.Process.ProcessName;
             processIcon = key.Process.ProcessIcon;
             canBeMerged = !key.HasModifierPressed;
+            isModifier = key.HasModifierPressed;
 
             keys = new ReadOnlyCollection<KeyPress>(new[] { key });
             textCollection = new ReadOnlyCollection<string>(CreateTextSequence(key).ToArray());
         }
 
-        public Message(IEnumerable<KeyPress> keys, KeyShortcut shortcut)
+        public Message(IEnumerable<KeyPress> keys, KeyShortcut shortcut, Boolean isShortcut = false)
             : this()
         {
             var allKeys = keys.ToArray();
@@ -48,7 +50,8 @@ public Message(IEnumerable<KeyPress> keys, KeyShortcut shortcut)
             processName = distinctProcessName.Single();
             processIcon = allKeys.First().Process.ProcessIcon;
             shortcutName = shortcut.Name;
-            isShortcut = true;
+            this.isShortcut = isShortcut;
+            this.isModifier = allKeys.Any(k => k.HasModifierPressed);
             canBeMerged = false;
 
             this.keys = new ReadOnlyCollection<KeyPress>(allKeys);
@@ -91,7 +94,9 @@ private Message(Message initial, bool isDeleting)
         public DateTime LastMessage { get { return lastMessage; } }
 
         public bool IsDeleting { get { return isDeleting; } }
-
+
+        public bool IsModifier { get { return isModifier; } }
+
         public Message Merge(Message other)
         {
             return new Message(this, other);

src/Carnac.Logic/Models/PopupSettings.cs

@@ -85,5 +85,6 @@ public string SortDescription
         public bool DetectShortcutsOnly { get; set; }
         public bool ShowApplicationIcon { get; set; }
         public bool SettingsConfigured { get; set; }
+        public bool ShowOnlyModifiers { get; set; }
     }
 }

src/Carnac.Logic/ShortcutAccumulator.cs

@@ -88,7 +88,7 @@ void ShortcutCompleted(KeyShortcut shortcut)
             if (HasCompletedValue)
                 throw new InvalidOperationException();
 
-            messages = new[] { new Message(Keys, shortcut) };
+            messages = new[] { new Message(Keys, shortcut, true) };
             HasCompletedValue = true;
         }
 

src/Carnac/UI/PreferencesView.xaml

@@ -138,9 +138,12 @@
                         </ui:PreferencesField>
 
                         <ui:PreferencesField Header="Shortcuts Only">
-                            <CheckBox IsChecked="{Binding Settings.DetectShortcutsOnly}" />
+                            <CheckBox IsChecked="{Binding Settings.DetectShortcutsOnly}" Content="shows only keys which are listed in keymaps folder" />
                         </ui:PreferencesField>
-                        <ui:PreferencesField Header="Show Application Icon">
+						<ui:PreferencesField Header="Show Only Modifiers">
+							<CheckBox IsChecked="{Binding Settings.ShowOnlyModifiers}" Content="shows only keys which have ctrl, shift, alt or windows" />
+						</ui:PreferencesField>
+						<ui:PreferencesField Header="Show Application Icon">
                             <CheckBox IsChecked="{Binding Settings.ShowApplicationIcon}" />
                         </ui:PreferencesField>
                     </StackPanel>