/*
   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(ui::Widget 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(ui::Widget 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(ui::Widget 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;
}