Graphics Library for D

[Adam D. Ruppe]

One of the things I did with my files was to have a separate 
event loop module which could be used by anything, in addition to 
their own event loop things (especially since I never implemented 
the other module on Windows or even other Poxixes yet; it is 
Linux only, but that's just due to my implementation.)

The separate event loop is nice because integrating loops is a 
bit of a pain. What mine does is pass type info for a single 
argument to a central thing:

import ev = arsd.eventloop;

// two separate libraries that can use the same loop
import simpledisplay;
import terminal;

struct MyEvent { } // a custom event

void main() {
     auto window = new SimpleWindow();
     auto terminal = Terminal(ConsoleOutputMode.linear);
     auto terminalInput = RealTimeconsoleInput(&terminal,
         ConsoleInputFlags.raw | ConsoleInputFlags.allInputEvents);

     addListener((InputEvent event) {
          // input from the terminal
     });
     addListener((KeyEvent event) {
          // key info from the gui window
          send(MyEvent()); // send the custom event
     });
     addListener(MyEvent event) {
         // a custom event
     });

     ev.loop();
}

and so on. Then the higher level things can build on this to do 
whatever - minigui.d for example uses a javascript style 
item.addEventListener thingy.