#include <stdlib.h>		//For exit call
#include <unistd.h>		//For sleep call
#include <stdio.h>		//For sprintf call
#include <pthread.h>	//For threaded call

#include <FL/Fl.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Button.H>
#include <FL/Fl_Light_Button.H>
#include <FL/Fl_Browser.H>

//I use a structure to hold all of the fltk stuff, so that it can be passed in one argument.
//This comes in handy for the call-backs & also avoids the UGLY use of globals!
typedef struct{
	Fl_Double_Window*	wd_dialog;
	Fl_Double_Window*	wd_log;

	Fl_Button*	bt_compute;
	Fl_Button*	bt_log;
	Fl_Button*	bt_exit;
	
	Fl_Browser*	ot_log;
}button_dialog;


//Compute process - This is run as a seperate thread.
void* compute(void* data)
{
	button_dialog*	d = (button_dialog*) data;
	int		x;
	char	string[50];
	
	for(x=0;x<100;x++){
		//This checks the value of the light button.  Calculation stops when this is off.
		while(!d->bt_compute->value())
			usleep(1000);
		sprintf(string,"Calculation step #%d",x);
		d->ot_log->add(string);				//Add line to the bottom of the log window
		d->ot_log->bottomline(x+1);			//Make window scroll to the last line (line count starts at 1 thus the x+1
		Fl::check();						//Force immediate redraw
		sleep(1);
	}
	pthread_exit(0);
}


//Exit callback - Easy...
void cb_exit(Fl_Widget*, void* data)
{
	exit(0);
}

//Simply shows or hides the log window
void cb_log(Fl_Widget*, void* data)
{
	button_dialog* d = (button_dialog*) data;	
	
	if(d->bt_log->value() == 1)
		d->wd_log->show();
	else
		d->wd_log->hide();
}


//Makes the fltk stuff.
button_dialog*	make_button_dialog(){
	button_dialog*	d = new button_dialog;
	
	d->wd_dialog = new Fl_Double_Window(200,200,200,115,"Dialog Window Example");
	
	d->bt_compute = new Fl_Light_Button(60,10,80,25,"Compute");
	d->bt_log = new Fl_Light_Button(60,45,80,25,"Log");
	d->bt_log->callback(cb_log,d);
	d->bt_exit = new Fl_Button(60,80,80,25,"Exit");
	d->bt_exit->callback(cb_exit,d);
	d->wd_dialog->end();
	
	d->wd_log= new Fl_Double_Window(400,200,200,200,"Log Window");
	d->ot_log = new Fl_Browser(5,5,190,190);
	d->wd_log->end();
	
	return d;
	
}

int main(int argc, char **argv)
{
	button_dialog	*d;
	pthread_t*	comp_thread = new pthread_t;

	d = make_button_dialog();

	//This makes a seperate thread for the calculation that is removed from the dialog stuff.
	pthread_create(comp_thread,0,compute,(void*)d);
	
	d->wd_dialog->show();

	return Fl::run();
} 

// generated by Fast Light User Interface Designer (fluid) version 1.0106

#include "console.h"
char x;

Fl_Double_Window *chdd_console=(Fl_Double_Window *)0;

Fl_Input *chdd_console_command=(Fl_Input *)0;

static void cb_chdd_console_command(Fl_Input*, void*) {
  chdd_console_process->position(chdd_console_process->size());
chdd_console_process->insert(chdd_console_command->value());
chdd_console_process->insert("\n");
chdd_console_command->value("");
}

Fl_Output *chdd_console_process=(Fl_Output *)0;

static void cb_(Fl_Button*, void*) {
  chdd_console_command->value("Executed");
}

static void cb_X(Fl_Button*, void*) {
  chdd_console_command->value("");
}

static void cb_X1(Fl_Button*, void*) {
  chdd_console_process->value("");
}

int main(int argc, char **argv) {
  Fl_Double_Window* w;
  { Fl_Double_Window* o = chdd_console = new Fl_Double_Window(540, 427, "chdd::console");
    w = o;
    o->labelsize(11);
    { Fl_Input* o = chdd_console_command = new Fl_Input(10, 290, 520, 110, "command:");
      o->type(4);
      o->box(FL_BORDER_BOX);
      o->color(FL_FOREGROUND_COLOR);
      o->labelsize(11);
      o->textsize(11);
      o->textcolor(6);
      o->callback((Fl_Callback*)cb_chdd_console_command);
      o->align(FL_ALIGN_TOP_LEFT);
      o->when(FL_WHEN_ENTER_KEY);
    }
    { Fl_Output* o = chdd_console_process = new Fl_Output(10, 25, 520, 230, "process:");
      o->type(12);
      o->box(FL_BORDER_BOX);
      o->color(FL_GRAY0);
      o->labelsize(11);
      o->textsize(11);
      o->textcolor(2);
      o->align(FL_ALIGN_TOP_LEFT);
      Fl_Group::current()->resizable(o);
    }
    { Fl_Button* o = new Fl_Button(390, 405, 25, 20, "@->");
      o->box(FL_THIN_UP_BOX);
      o->shortcut(0xcff0d);
      o->labelcolor((Fl_Color)1);
      o->callback((Fl_Callback*)cb_);
    }
    { Fl_Button* o = new Fl_Button(425, 405, 25, 20, "X");
      o->box(FL_THIN_UP_BOX);
      o->labelfont(1);
      o->labelsize(11);
      o->labelcolor((Fl_Color)1);
      o->callback((Fl_Callback*)cb_X);
    }
    { Fl_Button* o = new Fl_Button(425, 260, 25, 20, "X");
      o->box(FL_THIN_UP_BOX);
      o->labelfont(1);
      o->labelsize(11);
      o->labelcolor((Fl_Color)1);
      o->callback((Fl_Callback*)cb_X1);
    }
    o->end();
  }
  w->show(argc, argv);
  return Fl::run();
}


////////console.h

// generated by Fast Light User Interface Designer (fluid) version 1.0106

#ifndef console_h
#define console_h
#include <FL/Fl.H>
extern char x;
#include <FL/Fl_Double_Window.H>
extern Fl_Double_Window *chdd_console;
#include <FL/Fl_Input.H>
extern Fl_Input *chdd_console_command;
#include <FL/Fl_Output.H>
extern Fl_Output *chdd_console_process;
#include <FL/Fl_Button.H>
#endif