/*
   Copyright (C) 2001-2006, William Joseph.
   All Rights Reserved.

   This file is part of GtkRadiant.

   GtkRadiant 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.

   GtkRadiant 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 GtkRadiant; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include "paned.h"

#include <gtk/gtk.h>
#include <uilib/uilib.h>

#include "frame.h"


class PanedState
{
public:
float position;
int size;
};

gboolean hpaned_allocate( GtkWidget* widget, GtkAllocation* allocation, PanedState* paned ){
	if ( paned->size != allocation->width ) {
		paned->size = allocation->width;
		gtk_paned_set_position( GTK_PANED( widget ), static_cast<int>( paned->size * paned->position ) );
	}
	return FALSE;
}

gboolean vpaned_allocate( GtkWidget* widget, GtkAllocation* allocation, PanedState* paned ){
	if ( paned->size != allocation->height ) {
		paned->size = allocation->height;
		gtk_paned_set_position( GTK_PANED( widget ), static_cast<int>( paned->size * paned->position ) );
	}
	return FALSE;
}

gboolean paned_position( GtkWidget* widget, gpointer dummy, PanedState* paned ){
	if ( paned->size != -1 ) {
		paned->position = gtk_paned_get_position( GTK_PANED( widget ) ) / static_cast<float>( paned->size );
	}
	return FALSE;
}

PanedState g_hpaned = { 0.5f, -1, };
PanedState g_vpaned1 = { 0.5f, -1, };
PanedState g_vpaned2 = { 0.5f, -1, };

ui::HPaned create_split_views( ui::Widget topleft, ui::Widget topright, ui::Widget botleft, ui::Widget botright ){
	auto hsplit = ui::HPaned(ui::New);
	hsplit.show();

	hsplit.connect( "size_allocate", G_CALLBACK( hpaned_allocate ), &g_hpaned );
	hsplit.connect( "notify::position", G_CALLBACK( paned_position ), &g_hpaned );

	{
		auto vsplit = ui::VPaned(ui::New);
		gtk_paned_add1( GTK_PANED( hsplit ), vsplit  );
		vsplit.show();

		vsplit.connect( "size_allocate", G_CALLBACK( vpaned_allocate ), &g_vpaned1 );
		vsplit.connect( "notify::position", G_CALLBACK( paned_position ), &g_vpaned1 );

		gtk_paned_add1( GTK_PANED( vsplit ), create_framed_widget( topleft  ) );
		gtk_paned_add2( GTK_PANED( vsplit ), create_framed_widget( topright  ) );
	}
	{
		auto vsplit = ui::VPaned(ui::New);
		gtk_paned_add2( GTK_PANED( hsplit ), vsplit  );
		vsplit.show();

		vsplit.connect( "size_allocate", G_CALLBACK( vpaned_allocate ), &g_vpaned2 );
		vsplit.connect( "notify::position", G_CALLBACK( paned_position ), &g_vpaned2 );

		gtk_paned_add1( GTK_PANED( vsplit ), create_framed_widget( botleft  ) );
		gtk_paned_add2( GTK_PANED( vsplit ), create_framed_widget( botright  ) );
	}
	return hsplit;
}