/*
   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 "multimon.h"

#include "debugging/debugging.h"

#include "gtkutil/window.h"
#include "preferences.h"


multimon_globals_t g_multimon_globals;

LatchedBool g_Multimon_enableSysMenuPopups( false, "Floating windows sysmenu icons" );

void MultiMonitor_constructPreferences( PreferencesPage& page ){
	ui::CheckButton primary_monitor = page.appendCheckBox( "Multi Monitor", "Start on Primary Monitor", g_multimon_globals.m_bStartOnPrimMon );
	ui::CheckButton popup = page.appendCheckBox(
		"", "Disable system menu on popup windows",
		LatchedBoolImportCaller( g_Multimon_enableSysMenuPopups ),
		BoolExportCaller( g_Multimon_enableSysMenuPopups.m_latched )
		);
	Widget_connectToggleDependency( popup, primary_monitor );
}

#include "preferencesystem.h"
#include "stringio.h"

#include <gdk/gdk.h>

namespace
{
GdkRectangle primaryMonitor;
}

void PositionWindowOnPrimaryScreen( WindowPosition& position ){
	if ( position.w >= primaryMonitor.width - 12 ) {
		position.w = primaryMonitor.width - 12;
	}
	if ( position.h >= primaryMonitor.height - 24 ) {
		position.h = primaryMonitor.height - 48;
	}
	if ( position.x <= primaryMonitor.x || position.x + position.w >= ( primaryMonitor.x + primaryMonitor.width ) - 12 ) {
		position.x = primaryMonitor.x + 6;
	}
	if ( position.y <= primaryMonitor.y || position.y + position.h >= ( primaryMonitor.y + primaryMonitor.height ) - 48 ) {
		position.y = primaryMonitor.y + 24;
	}
}

void MultiMon_Construct(){
	// detect multiple monitors

	GdkScreen* screen = gdk_display_get_default_screen( gdk_display_get_default() );
	gint m = gdk_screen_get_n_monitors( screen );
	globalOutputStream() << "default screen has " << m << " monitors\n";
	for ( int j = 0; j != m; ++j )
	{
		GdkRectangle geom;
		gdk_screen_get_monitor_geometry( screen, j, &geom );
		globalOutputStream() << "monitor " << j << " geometry: " << geom.x << ", " << geom.y << ", " << geom.width << ", " << geom.height << "\n";
		if ( j == 0 ) {
			// I am making the assumption that monitor 0 is always the primary monitor on win32. Tested on WinXP with gtk+-2.4.
			primaryMonitor = geom;
		}
	}

	if ( m > 1 ) {
		g_multimon_globals.m_bStartOnPrimMon = true;
	}

	GlobalPreferenceSystem().registerPreference( "StartOnPrimMon", BoolImportStringCaller( g_multimon_globals.m_bStartOnPrimMon ), BoolExportStringCaller( g_multimon_globals.m_bStartOnPrimMon ) );
	GlobalPreferenceSystem().registerPreference( "NoSysMenuPopups", BoolImportStringCaller( g_Multimon_enableSysMenuPopups.m_latched ), BoolExportStringCaller( g_Multimon_enableSysMenuPopups.m_latched ) );

	g_Multimon_enableSysMenuPopups.useLatched();

	PreferencesDialog_addInterfacePreferences( FreeCaller1<PreferencesPage&, MultiMonitor_constructPreferences>() );
}
void MultiMon_Destroy(){
}