Highvoltz's KeyBind Decorator (for devs only)

[highvoltz]

If you want to add keybind capability to your project then this might help you.

Introducing the new KeyBindDecorator ...

Basically this is a Decorator that takes a keybind System.Windows.Forms.Keys and Composite child in the constructor parameter. If that key or key combination is pressed then the child gets executed.

If you use this in your project then I expect my name in the credits list.

Edit : I included a sample project showing how it can be used. basically just a framework.

    [COLOR=green]// Made by Highvoltz[/COLOR]

    [COLOR=blue]public[/COLOR] [COLOR=blue]class[/COLOR] [COLOR=#2b91af]KeyBindDecorator[/COLOR] : [COLOR=#2b91af]Decorator[/COLOR]
    {
        [[COLOR=#2b91af]DllImport[/COLOR]([COLOR=#a31515]"user32.dll"[/COLOR])]
        [COLOR=blue]static[/COLOR] [COLOR=blue]extern[/COLOR] [COLOR=blue]short[/COLOR] GetAsyncKeyState(System.Windows.Forms.[COLOR=#2b91af]Keys[/COLOR] vKey);
        [[COLOR=#2b91af]DllImport[/COLOR]([COLOR=#a31515]"user32.dll"[/COLOR])]
        [COLOR=blue]static[/COLOR] [COLOR=blue]extern[/COLOR] [COLOR=#2b91af]IntPtr[/COLOR] GetForegroundWindow();
        [COLOR=blue]private[/COLOR] [COLOR=blue]static[/COLOR] [COLOR=#2b91af]IntPtr[/COLOR] _wowHandle = [COLOR=#2b91af]ObjectManager[/COLOR].WoWProcess.MainWindowHandle;
        [COLOR=blue]private[/COLOR] System.Windows.Forms.[COLOR=#2b91af]Keys[/COLOR] _keyBind;
        [COLOR=green]// these modifer bools are true if our keybind uses them. otherwise false.[/COLOR]
        [COLOR=blue]private[/COLOR] [COLOR=blue]bool[/COLOR] _shiftkey = [COLOR=blue]false[/COLOR];
        [COLOR=blue]private[/COLOR] [COLOR=blue]bool[/COLOR] _ctrlkey = [COLOR=blue]false[/COLOR];
        [COLOR=blue]private[/COLOR] [COLOR=blue]bool[/COLOR] _altkey = [COLOR=blue]false[/COLOR];
        [COLOR=blue]private[/COLOR] [COLOR=#2b91af]Keys[/COLOR] _lastKey = [COLOR=#2b91af]Keys[/COLOR].None;
        [COLOR=blue]public[/COLOR] KeyBindDecorator([COLOR=#2b91af]Keys[/COLOR] keybind, [COLOR=#2b91af]Composite[/COLOR] child) : [COLOR=blue]this[/COLOR](keybind, child, [COLOR=blue]true[/COLOR]) { }
     
        [COLOR=blue]public[/COLOR] KeyBindDecorator([COLOR=#2b91af]Keys[/COLOR] keybind, [COLOR=#2b91af]Composite[/COLOR] child,[COLOR=blue]bool[/COLOR] requireWowInForground)
            : [COLOR=blue]base[/COLOR](child)
        {
            [COLOR=green]// k holds both modifer and  key so we need to extract the modifer[/COLOR]
            _shiftkey = (keybind & [COLOR=#2b91af]Keys[/COLOR].Shift) != 0 ? [COLOR=blue]true[/COLOR] : [COLOR=blue]false[/COLOR];
            _ctrlkey = (keybind & [COLOR=#2b91af]Keys[/COLOR].Control) != 0 ? [COLOR=blue]true[/COLOR] : [COLOR=blue]false[/COLOR];
            _altkey = (keybind & [COLOR=#2b91af]Keys[/COLOR].Alt) != 0 ? [COLOR=blue]true[/COLOR] : [COLOR=blue]false[/COLOR];
            [COLOR=green]// now we remove the modifer flags from keybind and assign it to _keybind.[/COLOR]
            _keyBind = (~[COLOR=#2b91af]Keys[/COLOR].Modifiers) & keybind;
            RequireWowInForground = requireWowInForground;
        }
        [COLOR=blue]public[/COLOR] System.Windows.Forms.[COLOR=#2b91af]Keys[/COLOR] KeyBind
        {
            [COLOR=blue]get[/COLOR] { [COLOR=blue]return[/COLOR] _keyBind; }
            [COLOR=blue]set[/COLOR]
            {   [COLOR=green]// check for modifer flags [/COLOR]
                _shiftkey = ([COLOR=blue]value[/COLOR] & [COLOR=#2b91af]Keys[/COLOR].Shift) != 0 ? [COLOR=blue]true[/COLOR] : [COLOR=blue]false[/COLOR];
                _ctrlkey = ([COLOR=blue]value[/COLOR] & [COLOR=#2b91af]Keys[/COLOR].Control) != 0 ? [COLOR=blue]true[/COLOR] : [COLOR=blue]false[/COLOR];
                _altkey = ([COLOR=blue]value[/COLOR] & [COLOR=#2b91af]Keys[/COLOR].Alt) != 0 ? [COLOR=blue]true[/COLOR] : [COLOR=blue]false[/COLOR];
                [COLOR=green]// remove modifer bits[/COLOR]
                _keyBind = (~[COLOR=#2b91af]Keys[/COLOR].Modifiers) & [COLOR=blue]value[/COLOR];
            }
        }
[COLOR=gray]        [COLOR=blue]public[/COLOR] [COLOR=blue]static[/COLOR] [COLOR=blue]bool[/COLOR] IsKeyDown(System.Windows.Forms.[COLOR=#2b91af]Keys[/COLOR] vKey)
        {
            [COLOR=blue]return[/COLOR] (GetAsyncKeyState(vKey) != 0);
        }
        [COLOR=blue]public[/COLOR] [COLOR=blue]bool[/COLOR] RequireWowInForground { [COLOR=blue]get[/COLOR]; [COLOR=blue]set[/COLOR]; }
        [COLOR=blue]public[/COLOR] [COLOR=blue]bool[/COLOR] PollKeys()
        {   [COLOR=green]// checks button status and returns true if our beybind is pressed.[/COLOR]
            [COLOR=blue]if[/COLOR] (IsKeyDown(_keyBind) && _lastKey != _keyBind && (!(_shiftkey ^ IsKeyDown([COLOR=#2b91af]Keys[/COLOR].ShiftKey))) &&
                (!(_ctrlkey ^ IsKeyDown([COLOR=#2b91af]Keys[/COLOR].ControlKey))) && (!(_altkey ^ IsKeyDown([COLOR=#2b91af]Keys[/COLOR].Menu))))
            {
                _lastKey = _keyBind;
                [COLOR=blue]return[/COLOR] [COLOR=blue]true[/COLOR];
            }
            [COLOR=blue]if[/COLOR] (!IsKeyDown(_keyBind))
            {
                _lastKey = [COLOR=#2b91af]Keys[/COLOR].None;
            }
            [COLOR=blue]return[/COLOR] [COLOR=blue]false[/COLOR];
        }
 
        [COLOR=blue]protected[/COLOR] [COLOR=blue]override[/COLOR] [COLOR=blue]bool[/COLOR] CanRun([COLOR=blue]object[/COLOR] context)
        {
            [COLOR=green]// if keybind is pressed and our wow window is the currently active window then execute macro[/COLOR]
            [COLOR=#2b91af]IntPtr[/COLOR] fgWinHwnd = GetForegroundWindow();[/COLOR]            
            [COLOR=blue]if[/COLOR] (PollKeys() && (!RequireWowInForground || (RequireWowInForground && _wowHandle == fgWinHwnd)) )
[COLOR=gray]                 [COLOR=blue]return[/COLOR] [COLOR=blue]true[/COLOR];
            [COLOR=blue]else[/COLOR]
                [COLOR=blue]return[/COLOR] [COLOR=blue]false[/COLOR];
        }
    }[/COLOR]

 

[highvoltz]

Added changes so the action doesn't get spammed when keybind is being pressed down, thanks to Comyn for bringing to my attention. Also added a constructor that accepts an additional parameter, a bool when set to true requires the WoW window that HB is attached to, to be in the foreground.