/* Copyright (c) 2003 krzYszcz and others.
 * For information on usage and redistribution, and for a DISCLAIMER OF ALL
 * WARRANTIES, see the file, "LICENSE.txt," in this distribution.  */

/* FIXME use guiconnect */

#include <stdio.h>
#include "m_pd.h"
#include "g_canvas.h"
#include "hammer/gui.h"

//#define HAMMERGUI_DEBUG

static t_class *hammergui_class = 0;
static t_hammergui *sink = 0;
static t_symbol *ps__up;
static t_symbol *ps__focus;
static t_symbol *ps__vised;

static void hammergui_anything(t_hammergui *snk,
			       t_symbol *s, int ac, t_atom *av)
{
    /* Dummy method, filtering out messages from gui to the masters.  This is
       needed in order to keep Pd's message system happy in a ``gray period''
       -- after last master is unbound, and before gui bindings are cleared. */
#ifdef HAMMERGUI_DEBUG
    startpost("%s", s->s_name);
    postatom(ac, av);
    endpost();
#endif
}

/* filtering out redundant "_up" messages */
static void hammergui__up(t_hammergui *snk, t_floatarg f)
{
#ifdef HAMMERGUI_DEBUG
    post("_up %g", f);
#endif
    if ((int)f)
    {
	if (!snk->g_up)
	{
	    snk->g_up = 1;
	    if (snk->g_mouse->s_thing)
	    {
		t_atom at;
		SETFLOAT(&at, 1);
		pd_typedmess(snk->g_mouse->s_thing, ps__up, 1, &at);
	    }
	}
    }
    else
    {
	if (snk->g_up)
	{
	    snk->g_up = 0;
	    if (snk->g_mouse->s_thing)
	    {
		t_atom at;
		SETFLOAT(&at, 0);
		pd_typedmess(snk->g_mouse->s_thing, ps__up, 1, &at);
	    }
	}
    }
}

static void hammergui__focus(t_hammergui *snk, t_symbol *s, t_floatarg f)
{
#ifdef HAMMERGUI_DEBUG
    if (s) post("_focus %s %g", s->s_name, f);
#endif
    if (snk->g_focus->s_thing)
    {
	t_atom at[2];
	SETSYMBOL(&at[0], s);
	SETFLOAT(&at[1], f);
	pd_typedmess(snk->g_focus->s_thing, ps__focus, 2, at);
    }
}

static void hammergui__vised(t_hammergui *snk, t_symbol *s, t_floatarg f)
{
#ifdef HAMMERGUI_DEBUG
    if (s) post("_vised %s %g", s->s_name, f);
#endif
    if (snk->g_vised->s_thing)
    {
	t_atom at[2];
	SETSYMBOL(&at[0], s);
	SETFLOAT(&at[1], f);
	pd_typedmess(snk->g_vised->s_thing, ps__vised, 2, at);
    }
#if 0
    /* How to be notified about changes of button state, prior to gui objects
       in a canvas?  LATER find a reliable way -- delete if failed */
    sys_vgui("bindtags %s {hammertag %s Canvas . all}\n",
	     s->s_name, s->s_name);
#endif
}


static void hammergui_dobindmouse(t_hammergui *snk)
{
#if 0
    /* How to be notified about changes of button state, prior to gui objects
       in a canvas?  LATER find a reliable way -- delete if failed */
    sys_vgui("bind hammertag <<hammerdown>> {pd [concat %s _up 0 \\;]}\n",
	     snk->g_gui->s_name);
    sys_vgui("bind hammertag <<hammerup>> {pd [concat %s _up 1 \\;]}\n",
	     snk->g_gui->s_name);
#endif
    sys_vgui("bind all <<hammerdown>> {pd [concat %s _up 0 \\;]}\n",
	     snk->g_gui->s_name);
    sys_vgui("bind all <<hammerup>> {pd [concat %s _up 1 \\;]}\n",
	     snk->g_gui->s_name);
}

static void hammergui__remouse(t_hammergui *snk)
{
    if (snk->g_mouse->s_thing)
    {
	/* if a new master was bound in a gray period, we need to
	   restore gui bindings */
#if 1
	post("rebinding mouse...");
#endif
	hammergui_dobindmouse(snk);
    }
}

static void hammergui_dobindfocus(t_hammergui *snk)
{
    sys_vgui("bind Canvas <<hammerfocusin>> \
 {pd [concat %s _focus %%W 1 \\;]}\n", snk->g_gui->s_name);
    sys_vgui("bind Canvas <<hammerfocusout>> \
 {pd [concat %s _focus %%W 0 \\;]}\n", snk->g_gui->s_name);
}

static void hammergui__refocus(t_hammergui *snk)
{
    if (snk->g_focus->s_thing)
    {
	/* if a new master was bound in a gray period, we need to
	   restore gui bindings */
#if 1
	post("rebinding focus...");
#endif
	hammergui_dobindfocus(snk);
    }
}

static void hammergui_dobindvised(t_hammergui *snk)
{
    sys_vgui("bind Canvas <<hammervised>> \
 {pd [concat %s _vised %%W 1 \\;]}\n", snk->g_gui->s_name);
    sys_vgui("bind Canvas <<hammerunvised>> \
 {pd [concat %s _vised %%W 0 \\;]}\n", snk->g_gui->s_name);
}

static void hammergui__revised(t_hammergui *snk)
{
    if (snk->g_vised->s_thing)
    {
	/* if a new master was bound in a gray period, we need to
	   restore gui bindings */
#if 1
	post("rebinding vised events...");
#endif
	hammergui_dobindvised(snk);
    }
}

static void hammergui_setup(void)
{
    hammergui_class = class_new(gensym("_hammergui"), 0, 0,
				sizeof(t_hammergui),
				CLASS_PD | CLASS_NOINLET, 0);
    class_addanything(hammergui_class, hammergui_anything);
    class_addmethod(hammergui_class, (t_method)hammergui__remouse,
		    gensym("_remouse"), 0);
    class_addmethod(hammergui_class, (t_method)hammergui__refocus,
		    gensym("_refocus"), 0);
    class_addmethod(hammergui_class, (t_method)hammergui__revised,
		    gensym("_revised"), 0);
    ps__up = gensym("_up");
    class_addmethod(hammergui_class, (t_method)hammergui__up,
		    ps__up, A_FLOAT, 0);
    ps__focus = gensym("_focus");
    class_addmethod(hammergui_class, (t_method)hammergui__focus,
		    ps__focus, A_SYMBOL, A_FLOAT, 0);
    ps__vised = gensym("_vised");
    class_addmethod(hammergui_class, (t_method)hammergui__vised,
		    ps__vised, A_SYMBOL, A_FLOAT, 0);

    sys_gui("proc hammergui_remouse {} {\n");
    sys_gui(" bind all <<hammerdown>> {}\n");
    sys_gui(" bind all <<hammerup>> {}\n");
    sys_gui(" pd [concat #hammergui _remouse \\;]\n");
    sys_gui("}\n");

    sys_gui("proc hammergui_mousexy {target} {\n");
    sys_gui(" set x [winfo pointerx .]\n");
    sys_gui(" set y [winfo pointery .]\n");
    sys_gui(" pd [concat #hammermouse $target $x $y \\;]\n");
    sys_gui("}\n");

    /* visibility hack for msw, LATER rethink */
    sys_gui("global hammergui_ispolling\n");
    sys_gui("global hammergui_x\n");
    sys_gui("global hammergui_y\n");
    sys_gui("set hammergui_ispolling 0\n");
    sys_gui("set hammergui_x 0\n");
    sys_gui("set hammergui_y 0\n");

    sys_gui("proc hammergui_poll {} {\n");
    sys_gui(" global hammergui_ispolling\n");
    sys_gui(" global hammergui_x\n");
    sys_gui(" global hammergui_y\n");
    sys_gui(" if {$hammergui_ispolling == 1} {\n");
    sys_gui("  set x [winfo pointerx .]\n");
    sys_gui("  set y [winfo pointery .]\n");
    sys_gui("  if {$hammergui_x != $x || $hammergui_y != $y} {\n");
    sys_gui("   pd [concat #hammermouse _poll $x $y \\;]\n");
    sys_gui("   set hammergui_x $x\n");
    sys_gui("   set hammergui_y $y\n");
    sys_gui("  }\n");
    sys_gui("  after 50 hammergui_poll\n");
    sys_gui(" }\n");
    sys_gui("}\n");

    sys_gui("proc hammergui_refocus {} {\n");
    sys_gui(" bind Canvas <<hammerfocusin>> {}\n");
    sys_gui(" bind Canvas <<hammerfocusout>> {}\n");
    sys_gui(" pd [concat #hammergui _refocus \\;]\n");
    sys_gui("}\n");

    sys_gui("proc hammergui_revised {} {\n");
    sys_gui(" bind Canvas <<hammervised>> {}\n");
    sys_gui(" bind Canvas <<hammerunvised>> {}\n");
    sys_gui(" pd [concat #hammergui _revised \\;]\n");
    sys_gui("}\n");
}

static int hammergui_validate(int dosetup)
{
    if (dosetup)
    {
	if (!hammergui_class) hammergui_setup();
	if (!sink)
	{
	    sink = (t_hammergui *)pd_new(hammergui_class);
	    sink->g_gui = gensym("#hammergui");
	    pd_bind((t_pd *)sink, sink->g_gui);
	}
    }
    if (hammergui_class && sink)
	return (1);
    else
    {
	bug("hammergui_validate");
	return (0);
    }
}

static int hammergui_mousevalidate(int dosetup)
{
    if (dosetup && !sink->g_mouse)
    {
	sink->g_mouse = gensym("#hammermouse");
	sys_gui("event add <<hammerdown>> <ButtonPress>\n");
	sys_gui("event add <<hammerup>> <ButtonRelease>\n");
    }
    if (sink->g_mouse)
	return (1);
    else
    {
	bug("hammergui_mousevalidate");
	return (0);
    }
}

static int hammergui_pollvalidate(int dosetup)
{
    if (dosetup && !sink->g_poll)
    {
	sink->g_poll = gensym("#hammerpoll");
	pd_bind((t_pd *)sink, sink->g_poll);  /* never unbound */
    }
    if (sink->g_poll)
	return (1);
    else
    {
	bug("hammergui_pollvalidate");
	return (0);
    }
}

static int hammergui_focusvalidate(int dosetup)
{
    if (dosetup && !sink->g_focus)
    {
	sink->g_focus = gensym("#hammerfocus");
	sys_gui("event add <<hammerfocusin>> <FocusIn>\n");
	sys_gui("event add <<hammerfocusout>> <FocusOut>\n");
    }
    if (sink->g_focus)
	return (1);
    else
    {
	bug("hammergui_focusvalidate");
	return (0);
    }
}

static int hammergui_visedvalidate(int dosetup)
{
    if (dosetup && !sink->g_vised)
    {
	sink->g_vised = gensym("#hammervised");
	/* subsequent map events have to be filtered out at the caller's side,
	   LATER investigate */
	sys_gui("event add <<hammervised>> <Map>\n");
	sys_gui("event add <<hammerunvised>> <Destroy>\n");
    }
    if (sink->g_vised)
	return (1);
    else
    {
	bug("hammergui_visedvalidate");
	return (0);
    }
}

void hammergui_bindmouse(t_pd *master)
{
    hammergui_validate(1);
    hammergui_mousevalidate(1);
    if (!sink->g_mouse->s_thing)
	hammergui_dobindmouse(sink);
    pd_bind(master, sink->g_mouse);
}

void hammergui_unbindmouse(t_pd *master)
{
    if (hammergui_validate(0) && hammergui_mousevalidate(0)
	&& sink->g_mouse->s_thing)
    {
	pd_unbind(master, sink->g_mouse);
	if (!sink->g_mouse->s_thing)
	    sys_gui("hammergui_remouse\n");
    }
    else bug("hammergui_unbindmouse");
}

void hammergui_mousexy(t_symbol *s)
{
    if (hammergui_validate(0))
	sys_vgui("hammergui_mousexy %s\n", s->s_name);
}

void hammergui_willpoll(void)
{
    hammergui_validate(1);
    hammergui_pollvalidate(1);
}

void hammergui_startpolling(t_pd *master)
{
    if (hammergui_validate(0) && hammergui_pollvalidate(0))
    {
	int doinit = (sink->g_poll->s_thing == (t_pd *)sink);
	pd_bind(master, sink->g_poll);
	if (doinit)
	{
	    /* visibility hack for msw, LATER rethink */
	    sys_gui("global hammergui_ispolling\n");
	    sys_gui("set hammergui_ispolling 1\n");
	    sys_gui("hammergui_poll\n");
	}
    }
}

void hammergui_stoppolling(t_pd *master)
{
    if (hammergui_validate(0) && hammergui_pollvalidate(0))
    {
	pd_unbind(master, sink->g_poll);
	if (sink->g_poll->s_thing == (t_pd *)sink)
	{
	    sys_gui("after cancel hammergui_poll\n");
	    /* visibility hack for msw, LATER rethink */
	    sys_gui("global hammergui_ispolling\n");
	    sys_gui("set hammergui_ispolling 0\n");
	}
    }
}

void hammergui_bindfocus(t_pd *master)
{
    hammergui_validate(1);
    hammergui_focusvalidate(1);
    if (!sink->g_focus->s_thing)
	hammergui_dobindfocus(sink);
    pd_bind(master, sink->g_focus);
}

void hammergui_unbindfocus(t_pd *master)
{
    if (hammergui_validate(0) && hammergui_focusvalidate(0)
	&& sink->g_focus->s_thing)
    {
	pd_unbind(master, sink->g_focus);
	if (!sink->g_focus->s_thing)
	    sys_gui("hammergui_refocus\n");
    }
    else bug("hammergui_unbindfocus");
}

void hammergui_bindvised(t_pd *master)
{
    hammergui_validate(1);
    hammergui_visedvalidate(1);
    if (!sink->g_vised->s_thing)
	hammergui_dobindvised(sink);
    pd_bind(master, sink->g_vised);
}

void hammergui_unbindvised(t_pd *master)
{
    if (hammergui_validate(0) && hammergui_visedvalidate(0)
	&& sink->g_vised->s_thing)
    {
	pd_unbind(master, sink->g_vised);
	if (!sink->g_vised->s_thing)
	    sys_gui("hammergui_revised\n");
    }
    else bug("hammergui_unbindvised");
}