// -*- C++ -*-

/* 
 * Gnome Crystal
 * view.cc 
 *
 * Copyright (C) 2000-2007 Jean Bréfort <jean.brefort@normalesup.org>
 *
 * This program is free software; you can redistribute it and/or 
 * modify it under the terms of the GNU General Public License as 
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

#include "config.h"
#include <GL/gl.h>
#include <GL/glu.h>
#include <gtk/gtkgl.h>
#include <libxml/parserInternals.h>
#include <libxml/xmlmemory.h>
#include "view.h"
#include "document.h"
#include "globals.h"
#include <cmath>
#include <cstring>

guint FoV;
gdouble Psi, Theta, Phi;
gdouble Red, Green, Blue;
extern GtkWidget *vbox1;

gcView::gcView (gcDocument *pDoc): CrystalView (pDoc)
{
	SetAngle (FoV);
	SetRotation (Psi, Theta, Phi);
	SetBlue (Blue);
	SetRed (Red);
	SetGreen (Green);
	SetAlpha (1.0);
	m_Window = NULL;
}

gcView::gcView (gcView *pView):
	CrystalView (dynamic_cast <CrystalDoc *> (pView->GetDoc ())),
	DialogOwner ()
{
	SetAngle (pView->GetAngle ());
	SetRotation (pView->GetPsi (), pView->GetTheta (), pView->GetPhi ());
	SetBlue (pView->GetBlue ());
	SetRed (pView->GetRed ());
	SetGreen (pView->GetGreen ());
	SetAlpha (pView->GetAlpha ());
	dynamic_cast <gcDocument*> (GetDoc())->AddView (this);
}

gcView::~gcView ()
{
	gtk_widget_destroy(GTK_WIDGET(m_pMenu));
	Dialog *dialog;
	while (!m_Dialogs.empty ()) {
		dialog = m_Dialogs.front();
		m_Dialogs.pop_front();
		dialog->Destroy();
	}
}

void gcView::SetBackgroundColor(float red, float green, float blue, float alpha)
{
	SetRed (red);
	SetGreen (green);
	SetBlue (blue);
	SetAlpha (alpha);
}

void gcView::GetBackgroundColor(double *red, double *green, double *blue, double *alpha)
{
	*red = GetRed ();
	*green = GetGreen ();
	*blue = GetBlue ();
	*alpha = GetAlpha ();
}

void gcView::GetRotation(double *psi, double *theta, double *phi)
{
	*psi = GetPsi ();
	*theta = GetTheta ();
	*phi = GetPhi ();
}

bool gcView::LoadOld(xmlNodePtr node)
{
	char *txt;
	xmlNodePtr child = node->children;
	while(child)
	{
		if (!strcmp((gchar*)child->name, "orientation"))
		{
			txt = (char*)xmlNodeGetContent(child);
			if (txt)
			{
				double y, t, h;
				sscanf(txt, "%lg %lg %lg", &y, &t, &h);
				SetRotation (y, t, h);
				xmlFree(txt);
			}
		}
		else if (!strcmp((gchar*)child->name, "background"))
		{
			txt = (char*)xmlNodeGetContent(child);
			if (txt)
			{
				float b, r, g, a;
				sscanf(txt, "%g %g %g %g", &b, &r, &g, &a);
				SetRed (r);
				SetGreen (g);
				SetBlue (b);
				SetAlpha (a);
				xmlFree(txt);
			}
		} else if (!strcmp((gchar*)child->name, "fov")) {
			txt = (char*) xmlNodeGetContent (child);
			if (txt) {
				double x;
				sscanf (txt, "%lg", &x);
				SetAngle (x);
				xmlFree (txt);
			}
		}
		child = child->next;
	}
	return true;
}