#include "paned.h"

#include <gtk/gtkhpaned.h>
#include <gtk/gtkvpaned.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, };

GtkHPaned* create_split_views( GtkWidget* topleft, GtkWidget* topright, GtkWidget* botleft, GtkWidget* botright ){
	GtkHPaned* hsplit = GTK_HPANED( gtk_hpaned_new() );
	gtk_widget_show( GTK_WIDGET( hsplit ) );

	g_signal_connect( G_OBJECT( hsplit ), "size_allocate", G_CALLBACK( hpaned_allocate ), &g_hpaned );
	g_signal_connect( G_OBJECT( hsplit ), "notify::position", G_CALLBACK( paned_position ), &g_hpaned );

	{
		GtkVPaned* vsplit = GTK_VPANED( gtk_vpaned_new() );
		gtk_paned_add1( GTK_PANED( hsplit ), GTK_WIDGET( vsplit ) );
		gtk_widget_show( GTK_WIDGET( vsplit ) );

		g_signal_connect( G_OBJECT( vsplit ), "size_allocate", G_CALLBACK( vpaned_allocate ), &g_vpaned1 );
		g_signal_connect( G_OBJECT( vsplit ), "notify::position", G_CALLBACK( paned_position ), &g_vpaned1 );

		gtk_paned_add1( GTK_PANED( vsplit ), GTK_WIDGET( create_framed_widget( topleft ) ) );
		gtk_paned_add2( GTK_PANED( vsplit ), GTK_WIDGET( create_framed_widget( topright ) ) );
	}
	{
		GtkVPaned* vsplit = GTK_VPANED( gtk_vpaned_new() );
		gtk_paned_add2( GTK_PANED( hsplit ), GTK_WIDGET( vsplit ) );
		gtk_widget_show( GTK_WIDGET( vsplit ) );

		g_signal_connect( G_OBJECT( vsplit ), "size_allocate", G_CALLBACK( vpaned_allocate ), &g_vpaned2 );
		g_signal_connect( G_OBJECT( vsplit ), "notify::position", G_CALLBACK( paned_position ), &g_vpaned2 );

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