#include <stdlib.h>
#include <string.h>
#include "elconfig.h"
#include "chat.h"
#include "context_menu.h"
#include "hud.h"
#include "init.h"
#include "translate.h"
#include "elwindows.h"
#include "alphamap.h"
#include "asc.h"
#include "cursors.h"
#include "gamewin.h"
#include "gl_init.h"
#include "interface.h"
#ifdef JSON_FILES
#include "json_io.h"
#endif
#include "keys.h"
#include "misc.h"
#include "multiplayer.h"
#include "textures.h"
#include "widgets.h"
#include "sound.h"

#define ELW_WIN_MAX 128

const GLfloat gui_color[3] = { 0.77f, 0.57f, 0.39f };
const GLfloat gui_invert_color[3] = { 0.32f, 0.23f, 0.15f };
const GLfloat gui_bright_color[3] = { 0.95f, 0.76f, 0.52f };
const GLfloat gui_dull_color[3] = { 0.40f, 0.30f, 0.20f };

// Managed Windows
// Provide common features for selected windows including id, position, name,
// scaling, activation keys and create/display/hide functions and information.

// structure for indivual window information
typedef struct {
	int id;
	int pos_x;
	int pos_y;
	int keep_centred;
	int prop_pos;
	float pos_ratio_x;
	float pos_ratio_y;
	int on_top;
	const char * icon_name;
	int hideable;
	int was_open;
	float scale;
	el_key_def *key_def;
	void (*display)(void);
	void (*toggle)(void);
	int (*showable)(void);
} managed_window_list_def;

// structure for the managed window array and any related vars
typedef struct {
	managed_window_list_def list[MW_MAX];
	int disable_mouse_or_keys_scaling;
} managed_window_def;

static managed_window_def managed_windows =
{
	.list[MW_TRADE] = { .id = -1, .pos_x = 10, .pos_y = 20, .keep_centred = 1, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 1, .icon_name = "trade", .hideable = 0, .was_open = 0, .scale = 1.0f, .key_def = NULL, .display = display_trade_menu, .toggle = NULL, .showable = NULL },
	.list[MW_ITEMS] = { .id = -1, .pos_x = 10, .pos_y = 20, .keep_centred = 1, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 1, .icon_name = "invent", .hideable = 1, .was_open = 0, .scale = 1.0f, .key_def = &K_ITEMS, .display = display_items_menu, .toggle = NULL, .showable = NULL },
	.list[MW_BAGS] = { .id = -1, .pos_x = 400, .pos_y = 20, .keep_centred = 1, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 1, .icon_name = "bags", .hideable = 1, .was_open = 0, .scale = 1.0f, .key_def = NULL, .display = NULL, .toggle = NULL, .showable = NULL },
	.list[MW_SPELLS] = { .id = -1, .pos_x = 10, .pos_y = 20, .keep_centred = 1, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 1, .icon_name = "spell", .hideable = 1, .was_open = 0, .scale = 1.0f, .key_def = &K_SIGILS, .display = display_sigils_menu, .toggle = NULL, .showable = NULL },
	.list[MW_STORAGE] = { .id = -1, .pos_x = 100, .pos_y = 100, .keep_centred = 1, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 1, .icon_name = "storage", .hideable = 1, .was_open = 0, .scale = 1.0f, .key_def = NULL, .display = display_storage_menu, .toggle = NULL, .showable = NULL },
	.list[MW_MANU] = { .id = -1, .pos_x = 10, .pos_y = 20, .keep_centred = 1, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 1, .icon_name = "manu", .hideable = 1, .was_open = 0, .scale = 1.0f, .key_def = &K_MANUFACTURE, .display = display_manufacture_menu, .toggle = NULL, .showable = NULL },
	.list[MW_EMOTE] = { .id = -1, .pos_x = 10, .pos_y = 20, .keep_centred = 1, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 1, .icon_name = "emotewin", .hideable = 1, .was_open = 0, .scale = 1.0f, .key_def = &K_EMOTES, .display = display_emotes_menu, .toggle = NULL, .showable = NULL },
	.list[MW_QUESTLOG] = { .id = -1, .pos_x = 10, .pos_y = 20, .keep_centred = 1, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 1, .icon_name = "quest", .hideable = 1, .was_open = 0, .scale = 1.0f, .key_def = &K_QUESTLOG, .display = display_questlog, .toggle = NULL, .showable = NULL },
	.list[MW_INFO] = { .id = -1, .pos_x = 150, .pos_y = 70, .keep_centred = 1, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 1, .icon_name = "info", .hideable = 1, .was_open = 0, .scale = 1.0f, .key_def = NULL, .display = display_tab_info, .toggle = NULL, .showable = NULL },
	.list[MW_BUDDY] = { .id = -1, .pos_x = 150, .pos_y = 70, .keep_centred = 1, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 1, .icon_name = "buddy", .hideable = 1, .was_open = 0, .scale = 1.0f, .key_def = &K_BUDDY, .display = display_buddy, .toggle = NULL, .showable = NULL },
	.list[MW_STATS] = { .id = -1, .pos_x = 150, .pos_y = 70, .keep_centred = 1, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 1, .icon_name = "stats", .hideable = 1, .was_open = 0, .scale = 1.0f, .key_def = NULL, .display = display_tab_stats, .toggle = NULL, .showable = NULL },
	.list[MW_HELP] = { .id = -1, .pos_x = 150, .pos_y = 70, .keep_centred = 1, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 0, .icon_name = "help", .hideable = 1, .was_open = 0, .scale = 1.0f, .key_def = NULL, .display = display_tab_help, .toggle = NULL, .showable = NULL },
	.list[MW_RANGING] = { .id = -1, .pos_x = 10, .pos_y = 20, .keep_centred = 1, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 1, .icon_name = "range", .hideable = 1, .was_open = 0, .scale = 1.0f, .key_def = &K_RANGINGWIN, .display = display_range_win, .toggle = NULL, .showable = NULL },
	.list[MW_ACHIEVE] = { .id = -1, .pos_x = 0, .pos_y = 0, .keep_centred = 0, .prop_pos = 0, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 0, .icon_name = "achievements", .hideable = 0, .was_open = 0, .scale = 1.0f, .key_def = NULL, .display = NULL, .toggle = NULL, .showable = NULL },
	.list[MW_DIALOGUE] = { .id = -1, .pos_x = 1, .pos_y = 1, .keep_centred = 1, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 0, .icon_name = "dialogue", .hideable = 1, .was_open = 0, .scale = 1.0f, .key_def = NULL, .display = NULL, .toggle = NULL, .showable = NULL },
	.list[MW_QUICKBAR] = { .id = -1, .pos_x = 100, .pos_y = 100, .keep_centred = 0, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 0, .icon_name = "quickbar", .hideable = 0, .was_open = 0, .scale = 1.0f, .key_def = NULL, .display = NULL, .toggle = NULL, .showable = NULL },
	.list[MW_QUICKSPELLS] = { .id = -1, .pos_x = 10, .pos_y = 20, .keep_centred = 0, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 0, .icon_name = "quickspells", .hideable = 0, .was_open = 0, .scale = 1.0f, .key_def = NULL, .display = NULL, .toggle = NULL, .showable = NULL },
	.list[MW_CONFIG] = { .id = -1, .pos_x = 10, .pos_y = 10, .keep_centred = 1, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 1, .icon_name = "opts", .hideable = 1, .was_open = 0, .scale = 1.0f, .key_def = &K_OPTIONS, .display = display_elconfig_win, .toggle = NULL, .showable = NULL },
	.list[MW_MINIMAP] = { .id = -1, .pos_x = 50, .pos_y = 50, .keep_centred = 0, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 1, .icon_name = "minimap", .hideable = 1, .was_open = 0, .scale = 1.0f, .key_def = &K_MINIMAP, .display = display_minimap, .toggle = NULL, .showable = NULL },
	.list[MW_ASTRO] = { .id = -1, .pos_x = 10, .pos_y = 20, .keep_centred = 1, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 1, .icon_name = "astro", .hideable = 0, .was_open = 0, .scale = 1.0f, .key_def = NULL, .display = NULL, .toggle = NULL, .showable = NULL },
	.list[MW_TABMAP] = { .id = -1, .pos_x = 0, .pos_y = 0, .keep_centred = 0, .prop_pos = 0, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 0, .icon_name = "map", .hideable = 0, .was_open = 0, .scale = 1.0f, .key_def = NULL, .display = NULL, .toggle = NULL, .showable = NULL },
	.list[MW_CONSOLE] = { .id = -1, .pos_x = 0, .pos_y = 0, .keep_centred = 0, .prop_pos = 0, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 0, .icon_name = "console", .hideable = 0, .was_open = 0, .scale = 1.0f, .key_def = NULL, .display = NULL, .toggle = NULL, .showable = NULL },
	.list[MW_CHAT] = { .id = -1, .pos_x = 0, .pos_y = 0, .keep_centred = 0, .prop_pos = 1, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 0, .icon_name = "chat", .hideable = 0, .was_open = 0, .scale = 1.0f, .key_def = &K_CHAT, .display = open_chat, .toggle = toggle_chat, .showable = is_chat_shown },
#ifdef ECDEBUGWIN
	.list[MW_ECDEBUG] = { .id = -1, .pos_x = 10, .pos_y = 10, .keep_centred = 1, .prop_pos = 0, .pos_ratio_x = 1.0f, .pos_ratio_y = 1.0f, .on_top = 0, .icon_name = "ecdebug", .hideable = 0, .was_open = 0, .scale = 1.0f, .key_def = &K_ECDEBUGWIN, .display = display_ecdebugwin, .toggle = NULL, .showable = NULL },
#endif
	.disable_mouse_or_keys_scaling = 0
};

windows_info	windows_list;	// the master list of windows

static window_info *cur_drag_window = NULL;
static widget_list *cur_drag_widget = NULL;
int top_SWITCHABLE_OPAQUE_window_drawn = -1;
int opaque_window_backgrounds = 0;
static int last_opaque_window_backgrounds = 0;

int display_window(int win_id);
int	drag_in_window(int win_id, int x, int y, Uint32 flags, int dx, int dy);
int	mouseover_window(int win_id, int x, int y);	// do mouseover processing for a window
int	keypress_in_window(int win_id, int x, int y, SDL_Keycode key_code, Uint32 key_unicode, Uint16 key_mod);	// keypress in the window

/*
 * The intent of the windows system is to create the window once
 * and then hide the window when you don't want to use it.
 *
 * Note: In the handlers, all cursor coordinates are relative to the window
 *
 */

void update_windows_custom_scale(float *changed_window_custom_scale)
{
	size_t win_id;
	// to avoid getting out of step, scale all the variables first, then call the handers
	for (win_id=0; win_id < windows_list.num_windows; win_id++)
	{
		window_info *win = &windows_list.window[win_id];
		if ((win->custom_scale != NULL) && (win->custom_scale == changed_window_custom_scale))
			update_window_scale(win, get_global_scale());
	}
	for (win_id=0; win_id < windows_list.num_windows; win_id++)
	{
		window_info *win = &windows_list.window[win_id];
		if ((win->custom_scale != NULL) && (win->custom_scale == changed_window_custom_scale) && (win->ui_scale_handler != NULL))
			(*win->ui_scale_handler)(win);
	}
}

void set_window_custom_scale(int win_id, enum managed_window_enum managed_win)
{
	window_info *win = NULL;
	if (win_id < 0 || win_id >= windows_list.num_windows || managed_win >= MW_MAX)
		return;
	win = &windows_list.window[win_id];
	win->custom_scale = &managed_windows.list[managed_win].scale;
	update_window_scale(win, get_global_scale());
	if (win->ui_scale_handler)
		(*win->ui_scale_handler)(win);
}

void update_window_scale(window_info *win, float scale_factor)
{
	if (win == NULL)
		return;
	if (win->flags & ELW_USE_UISCALE)
	{
		win->current_scale = scale_factor * ((win->custom_scale == NULL) ?1.0f : *win->custom_scale);
		win->current_scale_small = win->current_scale * DEFAULT_SMALL_RATIO;
		win->box_size = (int)(0.5 + win->current_scale * ELW_BOX_SIZE);
		win->small_font_max_len_x = get_max_char_width_zoom(win->font_category, win->current_scale_small);
		win->small_font_len_y = get_line_height(win->font_category, win->current_scale_small);
		win->default_font_max_len_x = get_max_char_width_zoom(win->font_category, win->current_scale);
		win->default_font_len_y = get_line_height(win->font_category, win->current_scale);
		win->title_height = max2i(win->small_font_len_y, win->current_scale*ELW_TITLE_HEIGHT);
	}
	else
	{
		win->current_scale = 1.0;
		win->current_scale_small = win->current_scale * DEFAULT_SMALL_RATIO;
		win->box_size = ELW_BOX_SIZE;
		win->small_font_max_len_x = get_max_char_width_zoom(win->font_category, DEFAULT_SMALL_RATIO);
		win->small_font_len_y = get_line_height(win->font_category, DEFAULT_SMALL_RATIO);
		win->default_font_max_len_x = get_max_char_width_zoom(win->font_category, 1.0);
		win->default_font_len_y = get_line_height(win->font_category, 1.0);
		win->title_height = max2i(win->small_font_len_y, ELW_TITLE_HEIGHT);
	}
}

// Called when the ui_scale is changed to update scale settings for all windows
void update_windows_scale(float scale_factor)
{
	int win_id;
	// to avoid getting out of step, scale all the variables first, then call the handers
	for (win_id=0; win_id < windows_list.num_windows; win_id++)
	{
		window_info *win = &windows_list.window[win_id];
		if(windows_list.window[win_id].window_id != win_id)
			continue;
		update_window_scale(win, scale_factor);
	}
	for (win_id=0; win_id < windows_list.num_windows; win_id++)
	{
		window_info *win = &windows_list.window[win_id];
		if(windows_list.window[win_id].window_id != win_id)
			continue;
		if (win->ui_scale_handler) (*win->ui_scale_handler)(win);
	}
}

static void move_window_proportionally(int win_id, float pos_ratio_x, float pos_ratio_y)
{
	window_info *win = NULL;
	int new_x, new_y;
	if (win_id < 0 || win_id >= windows_list.num_windows)
		return;
	win = &windows_list.window[win_id];
	new_x = (int)(0.5 + pos_ratio_x * ((float)win->cur_x + (float)win->len_x / 2.0f) - (float)win->len_x / 2.0f);
	new_y = (int)(0.5 + pos_ratio_y * ((float)win->cur_y + (float)win->len_y / 2.0f) - (float)win->len_y / 2.0f);
	move_window(win->window_id, win->pos_id, win->pos_loc, new_x, new_y);
}

void move_windows_proportionally(float pos_ratio_x, float pos_ratio_y)
{
	enum managed_window_enum i;
	for (i = 0; i < MW_MAX; i++)
	{
		if (!managed_windows.list[i].prop_pos)
			continue;
		if (managed_windows.list[i].id < 0)
		{
			managed_windows.list[i].pos_ratio_x *= pos_ratio_x;
			managed_windows.list[i].pos_ratio_y *= pos_ratio_y;
		}
		else
		{
			move_window_proportionally(managed_windows.list[i].id, pos_ratio_x, pos_ratio_y);
			managed_windows.list[i].pos_ratio_x = managed_windows.list[i].pos_ratio_y = 1.0f;
		}
	}
}

static enum managed_window_enum get_MW_index(int window_id)
{
	if ((window_id >= 0) && (window_id < windows_list.num_windows))
	{
		enum managed_window_enum i;
		for (i = 0; i < MW_MAX; i++)
			if (managed_windows.list[i].id == window_id)
				return i;
	}
	return MW_MAX;
}

static void centre_window_MW(enum managed_window_enum managed_win)
{
	if (managed_win >= MW_MAX)
		return;
	if ((managed_windows.list[managed_win].id >= 0) && (managed_windows.list[managed_win].id < windows_list.num_windows))
	{
		window_info *win = &windows_list.window[managed_windows.list[managed_win].id];
		int new_x = (window_width - win->len_x - HUD_MARGIN_X) / 2;
		int new_y = (window_height - win->len_y - HUD_MARGIN_Y) / 2;
		move_window(win->window_id, win->pos_id, win->pos_loc, new_x, new_y);
	}
}

static void set_window_centered_MW(int window_id, int state)
{
	enum managed_window_enum managed_win = get_MW_index(window_id);
	if (managed_win < MW_MAX)
	{
		managed_windows.list[managed_win].keep_centred = state;
		if (state == 1)
			centre_window_MW(managed_win);
	}
}

#ifdef JSON_FILES
void get_json_window_state_MW(enum managed_window_enum managed_win)
{
	if (managed_win < MW_MAX)
	{
		char window_dict_name[50];
		int pos_x = 0, pos_y = 0;
		get_dict_name_WM(managed_win, window_dict_name, sizeof(window_dict_name));
		pos_x = json_cstate_get_int(window_dict_name, "pos_x",
			(managed_windows.list[managed_win].keep_centred) ? -1 : managed_windows.list[managed_win].pos_x);
		pos_y = json_cstate_get_int(window_dict_name, "pos_y",
			(managed_windows.list[managed_win].keep_centred) ? -1 : managed_windows.list[managed_win].pos_y);
		if ((pos_x >= 0) || (pos_y >= 0))
			set_pos_MW(managed_win, pos_x, pos_y);
	}
}

void set_json_window_state_MW(enum managed_window_enum managed_win)
{
	if ((managed_win < MW_MAX) && !managed_windows.list[managed_win].keep_centred)
	{
		char window_dict_name[50];
		int pos_x = 0, pos_y = 0;
		get_dict_name_WM(managed_win, window_dict_name, sizeof(window_dict_name));
		set_save_pos_MW(managed_win, &pos_x, &pos_y);
		json_cstate_set_int(window_dict_name, "pos_x", pos_x);
		json_cstate_set_int(window_dict_name, "pos_y", pos_y);
	}
}
#endif

// Called just before saving data on exit.
// Window positions are proportionally adjusted ready for the next client run.
// Any window instantiated at exit will be positioned correctly.
// Any window that was not instantiated, will be positioned correctly only if
// the next start has the same sizes as was used starting this time.
// The case where the client will start with a different sizes than this time
// will cause the position of uninstantiated windows to be wrong.  This will be
// fixed when we save the managed window information as JSON.
void restore_window_proportionally(void)
{
	if (!full_screen)
	{
		int index = video_mode - 1;
		int new_width, new_height;
		if (index < 0 || index >= video_modes_count)
			index = 0;
		if (index == 0)
		{
			new_width = video_user_width;
			new_height = video_user_height;
		} else {
			new_width = video_modes[index].width;
			new_height = video_modes[index].height;
		}
		move_windows_proportionally((float)new_width / (float)window_width, (float)new_height / (float)window_height);
	}
}

void check_proportional_move(enum managed_window_enum managed_win)
{
	if (managed_win >= MW_MAX)
		return;
	if (managed_windows.list[managed_win].keep_centred)
		centre_window_MW(managed_win);
	else if (managed_windows.list[managed_win].prop_pos && ((managed_windows.list[managed_win].pos_ratio_x != 1.0f) || (managed_windows.list[managed_win].pos_ratio_y != 1.0f)))
	{
		move_window_proportionally(managed_windows.list[managed_win].id, managed_windows.list[managed_win].pos_ratio_x, managed_windows.list[managed_win].pos_ratio_y);
		managed_windows.list[managed_win].pos_ratio_x = managed_windows.list[managed_win].pos_ratio_y = 1.0f;
	}
}

enum managed_window_enum get_by_name_MW(const char *name)
{
	enum managed_window_enum i;
	if (name == NULL)
		return MW_MAX;
	for (i = 0; i < MW_MAX; i++)
		if (strcmp(managed_windows.list[i].icon_name, name) == 0)
			return i;
	return MW_MAX;
}

const char *get_dict_name_WM(enum managed_window_enum managed_win, char *buf, size_t buf_len)
{
	if (managed_win < MW_MAX)
		safe_snprintf(buf, buf_len, "%s_window", managed_windows.list[managed_win].icon_name);
	else
		safe_strncpy(buf, "unknown_window", buf_len);
	return buf;
}

int get_id_MW(enum managed_window_enum managed_win)
{
	if (managed_win < MW_MAX)
		return managed_windows.list[managed_win].id;
	else
		return -1;
}

void set_id_MW(enum managed_window_enum managed_win, int win_id)
{
	if (managed_win < MW_MAX)
		managed_windows.list[managed_win].id = win_id;
}

void set_pos_MW(enum managed_window_enum managed_win, int pos_x, int pos_y)
{
	if (managed_win < MW_MAX)
	{
		managed_windows.list[managed_win].pos_x = pos_x;
		managed_windows.list[managed_win].pos_y = pos_y;
		managed_windows.list[managed_win].keep_centred = 0;
	}
}

int get_pos_x_MW(enum managed_window_enum managed_win)
{
	if (managed_win < MW_MAX)
		return managed_windows.list[managed_win].pos_x;
	else
		return 0;
}

int get_pos_y_MW(enum managed_window_enum managed_win)
{
	if (managed_win < MW_MAX)
		return managed_windows.list[managed_win].pos_y;
	else
		return 0;
}

int on_top_responsive_MW(enum managed_window_enum managed_win)
{
	if (managed_win < MW_MAX)
		return managed_windows.list[managed_win].on_top;
	else
		return 0;
}

int not_on_top_now(enum managed_window_enum managed_win)
{
	if ((managed_win < MW_MAX) && managed_windows.list[managed_win].on_top && !windows_on_top)
		return 1;
	else
		return 0;
}

void clear_was_open_MW(enum managed_window_enum managed_win)
{
	if (managed_win < MW_MAX)
		managed_windows.list[managed_win].was_open = 0;
}

void set_was_open_MW(enum managed_window_enum managed_win)
{
	if (managed_win < MW_MAX)
		managed_windows.list[managed_win].was_open = 1;
}

int was_open_MW(enum managed_window_enum managed_win)
{
	if (managed_win < MW_MAX)
		return managed_windows.list[managed_win].was_open;
	else
		return 0;
}

int is_hideable_MW(enum managed_window_enum managed_win)
{
	if (managed_win < MW_MAX)
		return managed_windows.list[managed_win].hideable;
	else
		return 0;
}

void clear_hideable_MW(enum managed_window_enum managed_win)
{
	if (managed_win < MW_MAX)
		managed_windows.list[managed_win].hideable = 0;
}

void set_hideable_MW(enum managed_window_enum managed_win)
{
	if (managed_win < MW_MAX)
		managed_windows.list[managed_win].hideable = 1;
}

void call_display_MW(enum managed_window_enum managed_win)
{
	if ((managed_win < MW_MAX) && (managed_windows.list[managed_win].display != NULL))
		managed_windows.list[managed_win].display();
}

int match_keydef_MW(enum managed_window_enum managed_win, SDL_Keycode key_code, Uint16 key_mod)
{
	if ((managed_win < MW_MAX) && (managed_windows.list[managed_win].key_def != NULL))
		return (KEY_DEF_CMP((*(managed_windows.list[managed_win].key_def)), key_code, key_mod));
	else
		return 0;
}

float * get_scale_WM(enum managed_window_enum managed_win)
{
	if (managed_win < MW_MAX)
		return &managed_windows.list[managed_win].scale;
	else
		return NULL;
}

int * get_scale_flag_MW(void)
{
	return &managed_windows.disable_mouse_or_keys_scaling;
}

void set_save_pos_MW(enum managed_window_enum managed_win, int *pos_x, int *pos_y)
{
	if (managed_win >= MW_MAX)
		return;
	if (managed_windows.list[managed_win].id >= 0)
	{
		*pos_x = windows_list.window[managed_windows.list[managed_win].id].cur_x;
		*pos_y = windows_list.window[managed_windows.list[managed_win].id].cur_y;
	}
	else
	{
		*pos_x = managed_windows.list[managed_win].pos_x;
		*pos_y = managed_windows.list[managed_win].pos_y;
	}
}

void toggle_window_MW(enum managed_window_enum managed_win)
{
	if (managed_win >= MW_MAX)
		return;
	if (managed_windows.list[managed_win].toggle != NULL)
		managed_windows.list[managed_win].toggle();
	else
		toggle_window(get_id_MW(managed_win));
}

int get_window_showable_MW(enum managed_window_enum managed_win)
{
	if (managed_win >= MW_MAX)
		return 0;
	if (managed_windows.list[managed_win].showable != NULL)
		return managed_windows.list[managed_win].showable();
	else
		return get_window_showable(get_id_MW(managed_win));
}

static void change_window_font(window_info *win, font_cat cat)
{
	widget_list *W;

	if (win->font_category == cat)
	{
		if (win->flags & ELW_USE_UISCALE)
		{
			win->small_font_max_len_x = get_max_char_width_zoom(win->font_category, win->current_scale_small);
			win->small_font_len_y = get_line_height(win->font_category, win->current_scale_small);
			win->default_font_max_len_x = get_max_char_width_zoom(win->font_category, win->current_scale);
			win->default_font_len_y = get_line_height(win->font_category, win->current_scale);
			win->title_height = max2i(win->small_font_len_y, win->current_scale*ELW_TITLE_HEIGHT);
		}
		else
		{
			win->small_font_max_len_x = get_max_char_width_zoom(win->font_category,
				DEFAULT_SMALL_RATIO);
			win->small_font_len_y = get_line_height(win->font_category, DEFAULT_SMALL_RATIO);
			win->default_font_max_len_x = get_max_char_width_zoom(win->font_category, 1.0);
			win->default_font_len_y = get_line_height(win->font_category, 1.0);
			win->title_height = max2i(win->small_font_len_y, ELW_TITLE_HEIGHT);
		}
	}

	for (W = win->widgetlist; W; W = W->next)
		widget_handle_font_change(W, cat);

	if (win->font_change_handler)
		(*win->font_change_handler)(win, cat);
}

void change_windows_font(font_cat cat)
{
	int win_id;
	for (win_id = 0; win_id < windows_list.num_windows; ++win_id)
	{
		window_info *win = &windows_list.window[win_id];
		change_window_font(win, cat);
	}
}

// general windows manager functions
void	display_windows(int level)
{
	int	id;
	int	next_id;
	int i;

	windows_list.display_level= level;
	glColor3f(1.0f, 1.0f, 1.0f);
	// first draw everything that is last under everything
	id= -1;
	while (1)
	{
		next_id = -9999;
		for (i=0; i < windows_list.num_windows; i++)
		{
			// only look at displayed windows
			if (windows_list.window[i].displayed > 0)
			{
				// at this level?
				if (windows_list.window[i].order == id)
				{
					display_window(i);
				} else if (windows_list.window[i].order < id && windows_list.window[i].order > next_id)
				{
					// try to find the next level
					next_id = windows_list.window[i].order;
				}
			}
		}

		if(next_id <= -9999)
		{
			break;
		}
		else
		{
			id= next_id;
		}
	}

	top_SWITCHABLE_OPAQUE_window_drawn = -1;
	if(level > 0)
	{
		// now display each window in the proper order
		id = 0;
		while (1)
		{
			next_id = 9999;
			for (i = 0; i < windows_list.num_windows; i++)
			{
				// change the opaque option for all ELW_SWITCHABLE_OPAQUE if config has changed
				if ((windows_list.window[i].flags&ELW_SWITCHABLE_OPAQUE) &&
				    (last_opaque_window_backgrounds != opaque_window_backgrounds))
				{
					windows_list.window[i].opaque = opaque_window_backgrounds;
				}
				// only look at displayed windows
				if (windows_list.window[i].displayed > 0)
				{
					// at this level?
					if (windows_list.window[i].order == id)
					{
						display_window(i);
						// remember the top window that has ELW_SWITCHABLE_OPAQUE
						if (windows_list.window[i].flags&ELW_SWITCHABLE_OPAQUE)
							top_SWITCHABLE_OPAQUE_window_drawn = i;
					}
					else if (windows_list.window[i].order > id && windows_list.window[i].order < next_id)
					{
						// try to find the next level
						next_id = windows_list.window[i].order;
					}
				}
			}
			if (next_id >= 9999)
			{
				break;
			}
			else
			{
				id = next_id;
			}
		}
	}
	last_opaque_window_backgrounds = opaque_window_backgrounds;
}


int	click_in_windows(int mx, int my, Uint32 flags)
{
	int	done= 0;
	int	id;
	int	next_id;
	int	first_win= -1;
	int i;

	/* only activate context menu on unmodified right click */
	int cm_try_activate = cm_pre_show_check(flags);

	// check each window in the proper order
	if(windows_list.display_level > 0)
	{
		id= 9999;
		while(done <= 0)
		{
			next_id= 0;
			for (i=0; i<windows_list.num_windows; i++)
			{
				// only look at displayed windows
				if (windows_list.window[i].displayed > 0)
				{
					// at this level?
					if(windows_list.window[i].order == id)
					{
						if (cm_try_activate && cm_show_if_active(i))
							return 0;
						done= click_in_window(i, mx, my, flags);
						if(done > 0)
						{
							if(windows_list.window[i].displayed > 0)	select_window(i);	// select this window to the front
							cm_post_show_check(0);
							return i;
						}
						if(first_win < 0 && mouse_in_window(i, mx, my))	first_win= i;
					}
					else if(windows_list.window[i].order < id && windows_list.window[i].order > next_id)
					{
						// try to find the next level
						next_id= windows_list.window[i].order;
					}
				}
			}
			if(next_id <= 0)
				break;
			else
				id= next_id;
		}
	}

	// now check the background windows in the proper order
	id= -9999;
	while(done <= 0)
	{
		next_id= 0;
		for(i=0; i<windows_list.num_windows; i++)
		{
			// only look at displayed windows
			if(windows_list.window[i].displayed > 0)
			{
				// at this level?
				if(windows_list.window[i].order == id)
				{
					if (cm_try_activate && cm_show_if_active(i))
						return 0;
					done= click_in_window(i, mx, my, flags);
					if(done > 0)
					{
						//select_window(i);	// these never get selected
						cm_post_show_check(0);
						return i;
					}
				}
				else if(windows_list.window[i].order > id && windows_list.window[i].order < next_id)
				{
					// try to find the next level
					next_id= windows_list.window[i].order;
				}
			}
		}
		if(next_id >= 0)
			break;
		else
			id= next_id;
	}

	cm_post_show_check(0);

	// nothing to click on, do a select instead
	if(first_win >= 0)
	{
		select_window(first_win);
		return first_win;
	}

	return -1;	// no click in a window
}

int	drag_in_windows(int mx, int my, Uint32 flags, int dx, int dy)
{
	int	done = 0;
	int	id;
	int	next_id;
	int i;
	window_info *win;

	// ignore a drag of 0, but say we processed
	if(dx == 0 && dy == 0)	return -1;

	if (cur_drag_window)
	{
		// a drag was started from cur_drag_window, let that window
		// handle it, regardless of where the cursor is

		done = drag_in_window (cur_drag_window->window_id, mx, my, flags, dx, dy);
		if (done > 0)
		{
			if (cur_drag_window->displayed)
				// select this window to the front
				select_window (cur_drag_window->window_id);
			return cur_drag_window->window_id;
		}
		else
		{
			// The original window didn't handle the drag, reset it
			// and continue
			cur_drag_window = NULL;
		}
	}

	// check each window in the proper order
	if(windows_list.display_level > 0)
	{
		id= 9999;
		while (done <= 0)
		{
			next_id= 0;
			for(i=0; i < windows_list.num_windows; i++)
			{
				win = &(windows_list.window[i]);
				// only look at displayed windows
				if (win->displayed)
				{
					// at this level?
					if(win->order == id)
					{
						done = drag_in_window (i, mx, my, flags, dx, dy);
						if (done > 0)
						{
							if (win->displayed)
								select_window(i);	// select this window to the front
							cur_drag_window = win;
							return i;
						}
						else if (mouse_in_window (i, mx, my))
						{
							// drag started in this window
							return -1;
						}
					}
					else if (win->order < id && win->order > next_id)
					{
						// try to find the next level
						next_id= win->order;
					}
				}
			}
			if(next_id <= 0)
				break;
			else
				id= next_id;
		}
	}

	// now check the background windows in the proper order
	id= -9999;
	while (done <= 0)
	{
		next_id= 0;
		for (i=0; i<windows_list.num_windows; i++)
		{
			win = &(windows_list.window[i]);
			// only look at displayed windows
			if(win->displayed)
			{
				// at this level?
				if(win->order == id)
				{
					done = drag_in_window (i, mx, my, flags, dx, dy);
					if(done > 0)
					{
						//select_window(i);	// these never get selected
						cur_drag_window = win;
						return i;
					}
					else if (mouse_in_window (i, mx, my))
					{
						// drag started in this window
						return -1;
					}
				}
				else if (win->order > id && win->order < next_id)
				{
					// try to find the next level
					next_id = win->order;
				}
			}
		}
		if(next_id >= 0)
			break;
		else
			id= next_id;
	}

	return -1;	// no drag in a window
}


int drag_windows (int mx, int my, int dx, int dy)
{
	int	next_id;
	int	id, i;
	int	drag_id = -1;
	int dragable, resizeable;
	int x, y;
	window_info *win;

	if (cur_drag_window)
	{
		// We are currently dragging inside another window, don't
		// interrupt that by moving another window around
		return -1;
	}

	// check each window in the proper order for which one might be getting dragged
	if(windows_list.display_level > 0)
	{
		id= 9999;
		while(drag_id < 0)
		{
			next_id= 0;
			for(i=0; i<windows_list.num_windows; i++)
			{
				win = &(windows_list.window[i]);
				dragable = win->flags & ELW_DRAGGABLE;
				resizeable = win->flags & ELW_RESIZEABLE;
				// only look at displayed windows
				if (win->displayed && (dragable || resizeable) )
				{
					// at this level?
					if(win->order == id)
					{
						// position relative to window
						x = mx - win->cur_x;
						y = my - win->cur_y;

						// first check for being actively dragging or on the top bar
						if (win->dragged || (dragable && mouse_in_window(i, mx, my) && ((y < 0) || (win->owner_drawn_title_bar && y < win->title_height))) )
						{
							drag_id = i;
							win->dragged = 1;
							break;
						}
						// check if we are resizing this window
						else if (win->resized || (resizeable && mouse_in_window(i, mx, my) && x > win->len_x - win->box_size && y > win->len_y - win->box_size) )
						{
							drag_id = i;
							win->resized = 1;
							break;
						}
						// check if we're dragging inside a window
						else if(mouse_in_window(i, mx, my))
						{
							return -1;
						}
					}
					else if (win->order < id && win->order > next_id)
					{
						// try to find the next level
						next_id = win->order;
					}
				}
			}
			if(next_id <= 0)
				break;
			else
				id= next_id;
		}
	}

	// this section probably won't be needed, included to be complete
	// now check the background windows in the proper order for which one might be getting dragged
	id = -9999;
	while (drag_id < 0)
	{
		next_id = 0;
		for (i=0; i<windows_list.num_windows; i++)
		{
			win = &(windows_list.window[i]);
			dragable = win->flags & ELW_DRAGGABLE;
			resizeable = win->flags & ELW_RESIZEABLE;
			// only look at displayed windows
			if (win->displayed && (dragable || resizeable) )
			{
				// at this level?
				if(win->order == id)
				{
					// position relative to window
					x = mx - win->cur_x;
					y = my - win->cur_y;

					// check for being actively dragging or on the top bar
					if(win->dragged || (mouse_in_window(i, mx, my) && y < 0) )
					{
						drag_id = i;
						win->dragged = 1;
						break;
					}
					// check if we are resizing this window
					else if (resizeable && mouse_in_window(i, mx, my) && x > win->len_x - win->box_size && y > win->len_y - win->box_size)
					{
						drag_id = i;
						win->resized = 1;
						break;
					}
					// check if we're dragging inside a window
					else if (mouse_in_window(i, mx, my))
					{
						return -1;
					}
				}
				else if (win->order > id && win->order < next_id){
					// try to find the next level
					next_id = win->order;
				}
			}
		}
		if (next_id >= 0)
			break;
		else
			id= next_id;
	}

	// are we dragging a window?
	if (drag_id < 0) return -1;

	// dragged window is always on top
	select_window (drag_id);

	if(left_click>1 && (dx != 0 || dy != 0))	// TODO: avoid globals?
	{
		win = &(windows_list.window[drag_id]);
		if (win->dragged)
		{
			// move to new location
			move_window (drag_id, win->pos_id, win->pos_loc, win->pos_x+dx, win->pos_y+dy);
			set_window_centered_MW(win->window_id, 0);
		}
		else
			// resize this window
			resize_window (drag_id, win->len_x + dx, win->len_y + dy);
	}

	return drag_id;
}

int	keypress_in_windows(int x, int y, SDL_Keycode key_code, Uint32 key_unicode, Uint16 key_mod)
{
	int	done= 0;
	int	id;
	int	next_id;
	int i;

	// check each window in the proper order
	if(windows_list.display_level > 0)
	{
		id= 9999;
		while(done <= 0)
		{
			next_id= 0;
			for (i=0; i<windows_list.num_windows; i++)
			{
				// only look at displayed windows
				if (windows_list.window[i].displayed > 0)
				{
					// at this level?
					if(windows_list.window[i].order == id)
					{
						done = keypress_in_window (i, x, y, key_code, key_unicode, key_mod);
						if(done > 0)
						{
							if (windows_list.window[i].displayed > 0)
								select_window(i);	// select this window to the front
							return i;
						}
					}
					else if(windows_list.window[i].order < id && windows_list.window[i].order > next_id)
					{
						// try to find the next level
						next_id = windows_list.window[i].order;
					}
				}
			}
			if(next_id <= 0)
				break;
			else
				id= next_id;
		}
	}

	// now check the background windows in the proper order
	id= -9999;
	while(done <= 0)
	{
		next_id= 0;
		for(i=0; i<windows_list.num_windows; i++)
		{
			// only look at displayed windows
			if(windows_list.window[i].displayed > 0)
			{
				// at this level?
				if(windows_list.window[i].order == id)
				{
					done = keypress_in_window(i, x, y, key_code, key_unicode, key_mod);
					if(done > 0)
					{
						//select_window(i);	// these never get selected
						return i;
					}
				}
				else if(windows_list.window[i].order > id && windows_list.window[i].order < next_id)
				{
					// try to find the next level
					next_id= windows_list.window[i].order;
				}
			}
		}
		if(next_id >= 0)
			break;
		else
			id= next_id;
	}

	return -1;	// no keypress in a window
}

void	end_drag_windows()
{
	int	i;

	for (i=0; i<windows_list.num_windows; i++)
	{
		windows_list.window[i].dragged= 0;
		windows_list.window[i].resized= 0;
		windows_list.window[i].drag_in= 0;
	}

	// also reset the window we were dragging in, and the dragged widget
	cur_drag_window = NULL;
	cur_drag_widget = NULL;
}


int	select_window_with (int win_id, int raise_parent, int raise_children)
{
	int	i, old;

	if (win_id < 0 || win_id >= windows_list.num_windows)	return -1;
	if (windows_list.window[win_id].window_id != win_id)	return -1;
	// never select background windows
	if (windows_list.window[win_id].order < 0)		return 0;

	// if this is a child window, raise the parent first
	if (raise_parent && windows_list.window[win_id].pos_id >= 0)
		select_window_with (windows_list.window[win_id].pos_id, 1, 0);

	// shuffle the order of the windows
	old = windows_list.window[win_id].order;
	for (i=0; i<windows_list.num_windows; i++)
	{
		if(windows_list.window[i].order > old)
			windows_list.window[i].order--;
	}

	// and put it on top
	windows_list.window[win_id].order = windows_list.num_windows;

	// now raise all children
	if (raise_children)
	{
		for (i=0; i<windows_list.num_windows; i++)
		{
			if (windows_list.window[i].pos_id == win_id)
				select_window_with (i, 0, 1);
		}
	}

	return 1;
}

int	select_window (int win_id)
{
	return select_window_with (win_id, 1, 1);
}


int cm_title_handler(window_info *win, int widget_id, int mx, int my, int option)
{
	extern void hide_all_windows();
	switch (option)
	{
		case 0: hide_all_windows(); break;
		case 1: break; // make sure the sound is sucess.
		case 5: set_window_centered_MW(win->window_id, 1); break;
	}
	return 1;
}


// specific windows functions
int	create_window(const char *name, int pos_id, Uint32 pos_loc, int pos_x, int pos_y, int size_x, int size_y, Uint32 property_flags)
{
	window_info *win;
	int	win_id=-1;
	int	i;
	int isold = 1;

	// verify that we are setup and space allocated
	if (windows_list.window == NULL)
	{
		// allocate the space
		windows_list.num_windows = 0;
		windows_list.max_windows = ELW_WIN_MAX;
		windows_list.window=(window_info *) calloc(ELW_WIN_MAX, sizeof(window_info));
		//windows_list.window[0].window_id = -1;	// force a rebuild of this
		//windows_list.num_windows = 1;
	}

	// find an empty slot
	for (i=1; i<windows_list.num_windows; i++)
	{
		if (windows_list.window[i].window_id < 0)
		{
			win_id = i;
			break;
		}
	}

	// need a new_entry?
	if (win_id < 0)
	{
		isold = 0;
		if (windows_list.num_windows < windows_list.max_windows - 1)
		{
			win_id = windows_list.num_windows++;
		}
	}

	// fill in the information
	if (win_id >= 0)
	{
		win = &windows_list.window[win_id];
		win->window_id = win_id;

		win->flags = property_flags;
		//win->collapsed = 0;
		win->dragged = 0;
		win->resized = 0;
		win->drag_in = 0;
		win->opaque = opaque_window_backgrounds;
		win->owner_drawn_title_bar = 0;
		if (win->flags&ELW_TITLE_BAR)
		{
			win->cm_id = cm_create(cm_title_menu_str, cm_title_handler);
			if (win->flags&ELW_SWITCHABLE_OPAQUE)
				cm_bool_line(win->cm_id, 1, &win->opaque, NULL);
			else
				cm_grey_line(win->cm_id, 1, 1);
			cm_bool_line(win->cm_id, 2, &windows_on_top, "windows_on_top");
			cm_bool_line(win->cm_id, 3, get_scale_flag_MW(), "disable_window_scaling_controls");
		}
		else
			win->cm_id = CM_INIT_VALUE;
		safe_strncpy(win->window_name, name, sizeof (win->window_name));

		if (pos_id >= 0 && !windows_list.window[pos_id].displayed)
		{
			// parent is hidden
			win->reinstate = (property_flags & ELW_SHOW) ? 1 : 0;
			win->displayed = 0;
		}
		else
		{
			// no parent, or parent is shown
			win->displayed = (property_flags & ELW_SHOW) ? 1 : 0;
			win->reinstate = 0;
		}

		win->back_color[0] = 0.0f;
		win->back_color[1] = 0.0f;
		win->back_color[2] = 0.0f;
		win->back_color[3] = 0.4f;
		win->border_color[0] = gui_color[0];
		win->border_color[1] = gui_color[1];
		win->border_color[2] = gui_color[2];
		win->border_color[3] = 0.0f;
		win->line_color[0] = gui_color[0];
		win->line_color[1] = gui_color[1];
		win->line_color[2] = gui_color[2];
		win->line_color[3] = 0.0f;

		win->custom_scale = NULL;
		// Imherit font category from parent, default to UI_FONT
		if (pos_id >= 0 && pos_id < windows_list.num_windows)
			win->font_category = windows_list.window[pos_id].font_category;
		else
			win->font_category = UI_FONT;
		update_window_scale(win, get_global_scale());

		win->init_handler = NULL;
		win->display_handler = NULL;
		win->pre_display_handler = NULL;
		win->post_display_handler = NULL;
		win->click_handler = NULL;
		win->drag_handler = NULL;
		win->mouseover_handler = NULL;
		win->resize_handler = NULL;
		win->keypress_handler = NULL;
		win->close_handler = NULL;
		win->destroy_handler = NULL;
		win->show_handler = NULL;
		win->after_show_handler = NULL;
		win->hide_handler = NULL;
		win->ui_scale_handler = NULL;
		win->font_change_handler = NULL;

		win->widgetlist = NULL;

		// now call the routine to place it properly
		init_window (win_id, pos_id, pos_loc, pos_x, pos_y, size_x, size_y);

		win->order = (property_flags & ELW_SHOW_LAST) ? -win_id-1 : win_id+1;
		// make sure the order is unique if this is not a background
		// window
		if (isold && win->order > 0)
		{
			// determine the highest unused order
			int order = windows_list.num_windows;

			while (1)
			{
				for (i = 0; i < windows_list.num_windows; i++)
				{
					if (windows_list.window[i].order == order)
						break;
				}
				if (i < windows_list.num_windows)
					order--;
				else
					break;
			}

			win->order = order;
			// select the window to the foreground
			select_window (win_id);
		}
	}

	return	win_id;
}


void	destroy_window(int win_id)
{
	window_info *win;

	if(win_id < 0 || win_id >= windows_list.num_windows)	return;
	if(windows_list.window[win_id].window_id != win_id)	return;
	// mark the window as unused

	win = &(windows_list.window[win_id]);

	if (cm_valid(win->cm_id))
	{
		cm_destroy(win->cm_id);
		win->cm_id = CM_INIT_VALUE;
	}

	// call destruction handler
	if (win->destroy_handler != NULL)
		win->destroy_handler (win);

	// destroy our widgets
	while (win->widgetlist != NULL)
	{
	    widget_destroy(win_id, win->widgetlist->id);
	}
	win->widgetlist = NULL;

	win->window_id = -1;
	win->order = -1;
	win->displayed = 0;
}

int	init_window(int win_id, int pos_id, Uint32 pos_loc, int pos_x, int pos_y, int size_x, int size_y)
{
	int pwin_x, pwin_y;

	if(win_id < 0 || win_id >= windows_list.num_windows)	return -1;
	if(windows_list.window[win_id].window_id != win_id)	return -1;
	if (pos_id >= 0)
	{
		if (pos_id >= windows_list.num_windows)			return -1;
		if (windows_list.window[pos_id].window_id != pos_id)	return -1;
	}

	// parent window position. The new window is placed relative to these
	// coordinates. If pos_id < 0, the values are taken to be absolute
	// (i.e. relative to (0, 0) )
	pwin_x = pos_id >= 0 ? windows_list.window[pos_id].cur_x : 0;
	pwin_y = pos_id >= 0 ? windows_list.window[pos_id].cur_y : 0;

	// memorize the size
	windows_list.window[win_id].len_x= size_x;
	windows_list.window[win_id].len_y= size_y;
	// initialize min_len_x and min_len_y to zero.
	windows_list.window[win_id].min_len_x= 0;
	windows_list.window[win_id].min_len_y= 0;
	// then place the window
	move_window(win_id, pos_id, pos_loc, pos_x+pwin_x, pos_y+pwin_y);

	if(windows_list.window[win_id].flags&ELW_SCROLLABLE) {
		/* Add the scroll widget */
		Uint16 x = size_x-windows_list.window[win_id].box_size,
				y = size_y,
				width = windows_list.window[win_id].box_size,
				height = size_y;

		if(windows_list.window[win_id].flags&ELW_CLOSE_BOX) {
			/* Don't put the scrollbar behind the close box. */
			y += windows_list.window[win_id].box_size;
			height -= windows_list.window[win_id].box_size;
		}
		if(windows_list.window[win_id].flags&ELW_RESIZEABLE) {
			/* Don't put the scrollbar behind the resize box. */
			height -= windows_list.window[win_id].box_size;
		}
		windows_list.window[win_id].scroll_id = vscrollbar_add(win_id, NULL, x, y, width, height);
		windows_list.window[win_id].scroll_yoffset = 0;
		widget_set_color(win_id, windows_list.window[win_id].scroll_id,
						windows_list.window[win_id].border_color[0],
						windows_list.window[win_id].border_color[1],
						windows_list.window[win_id].border_color[2]);
	}
	// finally, call any init_handler that was defined
	if(windows_list.window[win_id].init_handler)
	{
		return((*windows_list.window[win_id].init_handler)(&windows_list.window[win_id]));
	}

	return 1;
}

int	move_window(int win_id, int pos_id, Uint32 pos_loc, int pos_x, int pos_y)
{
	window_info *win;
	int dx, dy, i;

	if(win_id < 0 || win_id >= windows_list.num_windows)
		return -1;
	if(windows_list.window[win_id].window_id != win_id)
		return -1;

	win= &windows_list.window[win_id];

	dx = -win->cur_x;
	dy = -win->cur_y;

	win->pos_id = pos_id;
	win->pos_loc= pos_loc;	//NOT SUPPORTED YET
	//TODO: calc win->cur_[xy] based on pos_id & pos_loc
	if(win->len_x > 0 && win->len_y > 0 && (win->flags&ELW_TITLE_BAR || win->owner_drawn_title_bar)){
		int xbound = (win->len_x < 50) ? win->len_x : 50;
		int ybound = (win->len_y < 50) ? win->len_y : 50;
		win->pos_x = win->cur_x = clampi(pos_x, xbound - win->len_x, window_width - xbound);
		if(win->owner_drawn_title_bar)
			win->pos_y = win->cur_y = clampi(pos_y, 0, window_height - ybound);
		else
			win->pos_y = win->cur_y = clampi(pos_y, win->title_height, window_height - ybound);
	} else {
		win->pos_x = win->cur_x = pos_x;
		win->pos_y = win->cur_y = pos_y;
	}

	// don't check child windows for visibility
	if (pos_id < 0 || windows_list.window[pos_id].order < 0) {
		// check for the window actually being on the screen, if not, move it
		if(win->cur_y < ((win->flags&ELW_TITLE_BAR)?win->title_height:0))
			win->pos_y = win->cur_y = (win->flags&ELW_TITLE_BAR)?win->title_height:0;
		if(win->cur_y >= window_height)
			win->pos_y = win->cur_y = window_height;	// had -32, but do we want that?
		if(win->len_x > 0 && (win->cur_x+win->len_x < win->box_size))
			win->pos_x = win->cur_x = 0-win->len_x+win->box_size;
		if(win->cur_x > window_width-win->box_size)
			win->pos_x = win->cur_x = window_width-win->box_size;
	}

	// move child windows, if any
	dx += win->cur_x;
	dy += win->cur_y;
	for (i = 0; i < windows_list.num_windows; i++) {
		if (windows_list.window[i].pos_id == win_id) {
			move_window (i, win_id, 0, windows_list.window[i].cur_x + dx, windows_list.window[i].cur_y + dy);
		}
	}

	return 1;
}

int	draw_window_title(window_info *win)
{
	float u_first_start = (float)31/255;
	float u_first_end = 0.5f/255.0f;
	float v_first_start = (float)160/255;
	float v_first_end = (float)175/255;

	float u_middle_start = (float)32/255;
	float u_middle_end = (float)63/255;
	float v_middle_start = (float)160/255;
	float v_middle_end = (float)175/255;

	float u_last_start = 0.5f/255.0f;
	float u_last_end = (float)31/255;
	float v_last_start = (float)160/255;
	float v_last_end = (float)175/255;

	int bar_end_x_width = (int)(0.5 + win->current_scale * 32);

	if((win->flags&ELW_TITLE_BAR) == ELW_TITLE_NONE)	return 0;

	/* draw the help text if the mouse is over the title bar */
	if (show_help_text && cm_valid(win->cm_id) && (cm_window_shown() == CM_INIT_VALUE) &&
		mouse_x > win->cur_x && mouse_x < win->cur_x+win->len_x &&
		mouse_y > win->cur_y-win->title_height && mouse_y < win->cur_y)
		show_help(cm_title_help_str, 0, win->len_y+10, win->current_scale);

	glColor3f(1.0f,1.0f,1.0f);
	//ok, now draw it...

	bind_texture(icons_text);
	glEnable(GL_ALPHA_TEST);
	glAlphaFunc(GL_GREATER,0.03f);
	glBegin(GL_QUADS);

	if (win->len_x > 2 * bar_end_x_width)
	{
		glTexCoord2f(u_first_end, v_first_start);
		glVertex3i(0, -win->title_height, 0);
		glTexCoord2f(u_first_end, v_first_end);
		glVertex3i(0, 0, 0);
		glTexCoord2f(u_first_start, v_first_end);
		glVertex3i(bar_end_x_width, 0, 0);
		glTexCoord2f(u_first_start, v_first_start);
		glVertex3i(bar_end_x_width, -win->title_height, 0);

		// draw one streched out cell to the proper size
		glTexCoord2f(u_middle_end, v_middle_start);
		glVertex3i(bar_end_x_width, -win->title_height, 0);
		glTexCoord2f(u_middle_end, v_middle_end);
		glVertex3i(bar_end_x_width, 0, 0);
		glTexCoord2f(u_middle_start, v_middle_end);
		glVertex3i(win->len_x-bar_end_x_width, 0, 0);
		glTexCoord2f(u_middle_start, v_middle_start);
		glVertex3i(win->len_x-bar_end_x_width, -win->title_height, 0);

		glTexCoord2f(u_last_end, v_last_start);
		glVertex3i(win->len_x-bar_end_x_width, -win->title_height, 0);
		glTexCoord2f(u_last_end, v_last_end);
		glVertex3i(win->len_x-bar_end_x_width, 0, 0);
		glTexCoord2f(u_last_start, v_last_end);
		glVertex3i(win->len_x, 0, 0);
		glTexCoord2f(u_last_start, v_last_start);
		glVertex3i(win->len_x, -win->title_height, 0);
	}
	else
	{
		glTexCoord2f(u_first_end, v_first_start);
		glVertex3i(0, -win->title_height, 0);
		glTexCoord2f(u_first_end, v_first_end);
		glVertex3i(0, 0, 0);
		glTexCoord2f(u_first_start, v_first_end);
		glVertex3i(win->len_x / 2, 0, 0);
		glTexCoord2f(u_first_start, v_first_start);
		glVertex3i(win->len_x / 2, -win->title_height, 0);

		glTexCoord2f(u_middle_end, v_middle_start);
		glVertex3i(win->len_x / 2, -win->title_height, 0);
		glTexCoord2f(u_middle_end, v_middle_end);
		glVertex3i(win->len_x / 2, 0, 0);
		glTexCoord2f(u_middle_start, v_middle_end);
		glVertex3i(win->len_x / 2 + 1, 0, 0);
		glTexCoord2f(u_middle_start, v_middle_start);
		glVertex3i(win->len_x / 2 + 1, -win->title_height, 0);

		glTexCoord2f(u_last_end, v_last_start);
		glVertex3i(win->len_x / 2 + 1, -win->title_height, 0);
		glTexCoord2f(u_last_end, v_last_end);
		glVertex3i(win->len_x / 2 + 1, 0, 0);
		glTexCoord2f(u_last_start, v_last_end);
		glVertex3i(win->len_x, 0, 0);
		glTexCoord2f(u_last_start, v_last_start);
		glVertex3i(win->len_x, -win->title_height, 0);
	}

	glEnd();
	glDisable(GL_ALPHA_TEST);

	// draw the name of the window
	if(win->flags&ELW_TITLE_NAME)
		{
			int	len = get_string_width_zoom((unsigned char*)win->window_name,
				UI_FONT, win->current_scale_small);
			int	x_pos = (win->len_x-len)/2;
			int y_txt = 1 - win->title_height + (win->title_height - win->small_font_len_y)/2;

			glColor4f(0.0f,0.0f,0.0f,1.0f);
			glBegin(GL_QUADS);
				glVertex3i(x_pos, -win->title_height, 0);
				glVertex3i(x_pos+len, -win->title_height, 0);
				glVertex3i(x_pos+len, 0, 0);
				glVertex3i(x_pos, 0, 0);
			glEnd();
			glBegin(GL_TRIANGLE_STRIP);
				glVertex3i(x_pos, -win->title_height, 0);
				glVertex3i(x_pos-10, -win->title_height/2, 0);
				glVertex3i(x_pos, 0, 0);
			glEnd();
			glBegin(GL_TRIANGLE_STRIP);
				glVertex3i(x_pos+len, -win->title_height, 0);
				glVertex3i(x_pos+len+10, -win->title_height/2, 0);
				glVertex3i(x_pos+len, 0, 0);
			glEnd();
			glEnable(GL_TEXTURE_2D);
			glColor3f(win->border_color[0],win->border_color[1],win->border_color[2]);
			// center text
			draw_string_small_zoomed(x_pos, y_txt, (const unsigned char*)win->window_name,
				1, win->current_scale);
		}
#ifdef OPENGL_TRACE
CHECK_GL_ERRORS();
#endif //OPENGL_TRACE

	return 1;
}

int	draw_window_border(window_info *win)
{
	glDisable(GL_TEXTURE_2D);
	if(win->flags&ELW_USE_BACKGROUND)
	{
		if (!(win->opaque && win->flags&ELW_SWITCHABLE_OPAQUE))
		{
			glEnable(GL_BLEND);
			glBlendFunc(GL_ONE, GL_SRC_ALPHA);
		}
		glColor4f(win->back_color[0],win->back_color[1],win->back_color[2],win->back_color[3]);
		glBegin(GL_QUADS);
			glVertex3i(0, win->len_y, 0);
			glVertex3i(0, 0, 0);
			glVertex3i(win->len_x, 0, 0);
			glVertex3i(win->len_x, win->len_y, 0);
		glEnd();
		if (!(win->opaque && win->flags&ELW_SWITCHABLE_OPAQUE))
			glDisable(GL_BLEND);
	}

	if(win->flags&ELW_USE_BORDER)
	{
		if ( use_alpha_border && (win->flags & ELW_ALPHA_BORDER) )
		{
			draw_window_alphaborder (win);
		}
		else
		{
			glColor3f(win->border_color[0],win->border_color[1],win->border_color[2]);
			glBegin(GL_LINE_LOOP);
				glVertex3i(0, 0, 0);
				glVertex3i(win->len_x, 0, 0);
				glVertex3i(win->len_x, win->len_y, 0);
				glVertex3i(0, win->len_y, 0);
			glEnd();
		}
	}

	if (win->flags&ELW_RESIZEABLE)
	{
		// draw the diagonal drag stripes
		glColor3f(win->border_color[0],win->border_color[1],win->border_color[2]);
		glBegin(GL_LINES);
			glVertex3i(win->len_x-win->box_size/4, win->len_y, 0);
			glVertex3i(win->len_x, win->len_y-win->box_size/4, 0);

			glVertex3i(win->len_x-win->box_size/2, win->len_y, 0);
			glVertex3i(win->len_x, win->len_y-win->box_size/2, 0);

			glVertex3i(win->len_x-(3*win->box_size)/4, win->len_y, 0);
			glVertex3i(win->len_x, win->len_y-(3*win->box_size)/4, 0);

			glVertex3i(win->len_x-win->box_size, win->len_y, 0);
			glVertex3i(win->len_x, win->len_y-win->box_size, 0);
		glEnd();
	}

	if(win->flags&ELW_CLOSE_BOX)
	{
		//draw the corner, with the X in
		glColor3f(win->border_color[0],win->border_color[1],win->border_color[2]);
		glBegin(GL_LINE_STRIP);
			glVertex3i(win->len_x, win->box_size, 0);
			glVertex3i(win->len_x-win->box_size, win->box_size, 0);
			glVertex3i(win->len_x-win->box_size, 0, 0);
		glEnd();
		draw_cross(win->len_x - win->box_size / 2, win->box_size / 2, win->box_size / 2 - win->box_size / 6, 1);
	}

	glEnable(GL_TEXTURE_2D);
#ifdef OPENGL_TRACE
CHECK_GL_ERRORS();
#endif //OPENGL_TRACE

	return 1;
}

int	draw_window(window_info *win)
{
	int	ret_val=0;
	widget_list *W = NULL;

#ifdef OPENGL_TRACE
CHECK_GL_ERRORS();
#endif //OPENGL_TRACE
	if(win == NULL || win->window_id < 0)
		return -1;

	if(!win->displayed)
		return 0;
	// mouse over processing first
	mouseover_window(win->window_id, mouse_x, mouse_y);
	if(win->flags&ELW_TITLE_BAR) {
		/* Only move windows with title bars, otherwise we'll get problems
		 * with tab collections, etc. Windows without title bars
		 * can't be moved anyways.
		 */
		 //if it's too far out of bounds, put it back. you do the bottom bounds first incase the window in question is larger than the game window
		if(win->cur_x + 20 > window_width) {
			move_window(win->window_id, win->pos_id, win->pos_loc, window_width-20, win->pos_y);
		}
		if(win->cur_y + 10 > window_height) {
			move_window(win->window_id, win->pos_id, win->pos_loc, win->pos_x, window_height-10);
		}
		if(win->cur_x + win->len_x < 20) {
			move_window(win->window_id, win->pos_id, win->pos_loc, 20 - win->len_x, win->pos_y);
		}
		if(win->cur_y < win->title_height) {
			move_window(win->window_id, win->pos_id, win->pos_loc, win->pos_x, win->title_height);
		}
	}
	// now normal display processing
	glPushMatrix();
#ifdef OPENGL_TRACE
CHECK_GL_ERRORS();
#endif //OPENGL_TRACE
	glTranslatef((float)win->cur_x, (float)win->cur_y, 0.0f);
	draw_window_title(win);
	draw_window_border(win);
	glColor3f(1.0f, 1.0f, 1.0f);
	if(win->pre_display_handler)
		(*win->pre_display_handler)(win);

	if(win->flags&ELW_SCROLLABLE) {
		int pos = vscrollbar_get_pos(win->window_id, win->scroll_id);
		int offset = win->scroll_yoffset + ((win->flags&ELW_CLOSE_BOX) ? win->box_size : 0);

		widget_move(win->window_id, win->scroll_id, win->len_x - widget_get_width(win->window_id, win->scroll_id), pos+offset);
		/* Cut away what we've scrolled past, */
		glEnable(GL_SCISSOR_TEST);
		glScissor(win->cur_x, window_height - win->cur_y - win->len_y, win->len_x + 1, win->len_y + 1);
		glTranslatef(0, -pos, 0);
	}
	if(win->display_handler)
	{
		ret_val=(*win->display_handler)(win);
//the window's own display handler can cause OpenGL errors
#ifdef OPENGL_TRACE
CHECK_GL_ERRORS();
#endif //OPENGL_TRACE
	}
	else
	{
		ret_val=1;
	}
	// assign here in case display_handler changed the widgets - like deletes the widgets
	W = win->widgetlist;

	// widget drawing
	while(W != NULL)
	{
		if (!(W->Flags&WIDGET_INVISIBLE) && !(W->Flags&WIDGET_DISABLED)) {
			// Draw defaults, then secondaries
			if (W->type != NULL)
				if (W->type->draw != NULL)
					W->type->draw(W);
			if (W->OnDraw != NULL)
			{
				if(W->spec != NULL)
					W->OnDraw(W, W->spec);
				else
					W->OnDraw(W);
			}
		}
		W = W->next;
	}
	if(win->flags&ELW_SCROLLABLE) {
		glDisable(GL_SCISSOR_TEST);
	}
	if(win->post_display_handler)
		(*win->post_display_handler)(win);
	glPopMatrix();
#ifdef OPENGL_TRACE
CHECK_GL_ERRORS();
#endif //OPENGL_TRACE

	return(ret_val);
}

void show_window(int win_id)
{
	int iwin;
	int ipos;
	window_info *win;

	if(win_id < 0 || win_id >= windows_list.num_windows)	return;
	if(windows_list.window[win_id].window_id != win_id)	return;

	win = &windows_list.window[win_id];
	if (win->show_handler) (*win->show_handler)(win);

	// pull to the top if not currently displayed
	if(!windows_list.window[win_id].displayed)
		select_window(win_id);

	ipos = windows_list.window[win_id].pos_id;
	if (ipos >= 0 && !windows_list.window[ipos].displayed)
	{
		// parent is hidden, simply set the reinstated flag
		windows_list.window[win_id].reinstate = 1;
	}
	else
	{
		// display it
		windows_list.window[win_id].displayed = 1;
	}

	// see if child windows need to be reinstated
	for (iwin = 0; iwin < windows_list.num_windows; iwin++)
		if (windows_list.window[iwin].pos_id == win_id && windows_list.window[iwin].reinstate)
			show_window (iwin);

	if (win->after_show_handler) (*win->after_show_handler)(win);
}

void	hide_window(int win_id)
{
	int iwin;
	window_info * win;

	if(win_id < 0 || win_id >= windows_list.num_windows)	return;
	if(windows_list.window[win_id].window_id != win_id)	return;

	win = &windows_list.window[win_id];

	win->displayed = 0;
	win->reinstate = 0;

	// hide child windows
	for (iwin = 0; iwin < windows_list.num_windows; iwin++)
		if (windows_list.window[iwin].pos_id == win_id && windows_list.window[iwin].displayed)
		{
			hide_window (iwin);
			windows_list.window[iwin].reinstate = 1;
		}

	if (win->hide_handler) (*win->hide_handler)(win);
}

void	toggle_window(int win_id)
{
	if(win_id < 0 || win_id >= windows_list.num_windows)	return;
	if(windows_list.window[win_id].window_id != win_id)	return;

	if(!windows_list.window[win_id].displayed)
		select_window(win_id);
	//windows_list.window[win_id].displayed=!windows_list.window[win_id].displayed;

	// if we hide a window, we have to hide it's children too, so we cannot
	// simply toggle the displayed flag.
	if (windows_list.window[win_id].displayed || windows_list.window[win_id].reinstate)
		hide_window (win_id);
	else
		show_window (win_id);
}

static void resize_scrollbar(window_info *win)
{
	int sblen = win->len_y - win->scroll_yoffset;
	int width = (win->flags&ELW_USE_UISCALE) ?win->box_size :widget_get_width(win->window_id, win->scroll_id);
	if (win->flags&ELW_CLOSE_BOX)
		sblen -= win->box_size;
	if (win->flags&ELW_RESIZEABLE)
		sblen -= win->box_size;
	widget_resize(win->window_id, win->scroll_id, width, sblen);
}

void resize_window (int win_id, int new_width, int new_height)
{
	window_info *win;

	if (win_id < 0 || win_id >= windows_list.num_windows)	return;
	if (windows_list.window[win_id].window_id != win_id)	return;

	win = &(windows_list.window[win_id]);

	if (new_width < win->min_len_x) new_width = win->min_len_x;
	if (new_height < win->min_len_y) new_height = win->min_len_y;

	win->len_x = new_width;
	win->len_y = new_height;

	if (win->flags&ELW_SCROLLABLE)
		resize_scrollbar(win);

	if (win->resize_handler != NULL)
	{
		glPushMatrix ();
		glTranslatef ((float)win->cur_x, (float)win->cur_y, 0.0f);
		(*win->resize_handler) (win, new_width, new_height);
		glPopMatrix  ();
	}
#ifdef OPENGL_TRACE
CHECK_GL_ERRORS();
#endif //OPENGL_TRACE
}

int	get_show_window(int win_id)
{
	// unititialized windows always fail as if not shown, not an error
	if(win_id < 0 || win_id >= windows_list.num_windows)	return 0;
	if(windows_list.window[win_id].window_id != win_id)	return 0;

	return windows_list.window[win_id].displayed;
}

int	get_window_showable(int win_id)
{
	// unititialized windows always fail as if not shown, not an error
	if(win_id < 0 || win_id >= windows_list.num_windows)	return 0;
	if(windows_list.window[win_id].window_id != win_id)	return 0;

	return (windows_list.window[win_id].displayed || windows_list.window[win_id].reinstate);
}

int	display_window(int win_id)
{
	if(win_id < 0 || win_id >= windows_list.num_windows)	return -1;
	if(windows_list.window[win_id].window_id != win_id)	return -1;
	// is it active/displayed?
	if(windows_list.window[win_id].displayed)
		{
			return(draw_window(&windows_list.window[win_id]));
		}
	return 0;
}

int	mouse_in_window(int win_id, int x, int y)
{
	// NOTE: these tests do not take depth into account, just location
	// Returns -1 on error, 0 No, 1 yes
	if(win_id < 0 || win_id >= windows_list.num_windows)	return -1;
	if(windows_list.window[win_id].window_id != win_id)	return -1;

	if(x<windows_list.window[win_id].cur_x || x>=windows_list.window[win_id].cur_x+windows_list.window[win_id].len_x)	return 0;
	if(y<windows_list.window[win_id].cur_y-((windows_list.window[win_id].flags&ELW_TITLE_BAR)?windows_list.window[win_id].title_height:0) || y>=windows_list.window[win_id].cur_y+windows_list.window[win_id].len_y)	return 0;

	return 1;
}

int	click_in_window(int win_id, int x, int y, Uint32 flags)
{
	window_info *win;
	int	mx, my;
   	widget_list *W;
	int ret_val = 0;
	int scroll_pos = 0;

	if(win_id < 0 || win_id >= windows_list.num_windows)	return -1;
	if(windows_list.window[win_id].window_id != win_id)	return -1;
	win= &windows_list.window[win_id];
	W = win->widgetlist;
	if(mouse_in_window(win_id, x, y) > 0)
	{
		static int time=0;
		if(time+60000<cur_time){
			/*Server testing - required*/
			Uint8 str[1];
			str[0]=PING_REQUEST;
			my_tcp_send(my_socket, str, 1);
			time=cur_time;
		}

		mx = x - win->cur_x;
		my = y - win->cur_y;
		//check the X for close - but hide it
		if(win->flags&ELW_CLOSE_BOX)
		{
			if(my>0 && my<=win->box_size && mx>(win->len_x-win->box_size) && mx<=win->len_x)
			{
				// the X was hit, hide this window
				// but don't close storage if trade is open
				if(win_id != managed_windows.list[MW_STORAGE].id || managed_windows.list[MW_TRADE].id < 0 || !windows_list.window[managed_windows.list[MW_TRADE].id].displayed)
					hide_window(win_id);
				if (win->close_handler != NULL)
					win->close_handler (win);
				do_window_close_sound();
				return 1;
			}
		}
		if(win->flags&ELW_RESIZEABLE && mx > win->len_x-win->box_size && my > win->len_y-win->box_size) {
			/* Clicked on the resize-corner. */
			return 1;
		}
		if ((win->custom_scale != NULL) && (!managed_windows.disable_mouse_or_keys_scaling) &&
			(flags & KMOD_CTRL) && ((flags & ELW_WHEEL_DOWN) || (flags & ELW_WHEEL_UP)))
		{
			step_win_scale_factor((flags & ELW_WHEEL_UP) ? 1 : 0, win->custom_scale);
			return 1;
		}
		if(win->flags&ELW_SCROLLABLE) {
			/* Adjust mouse y coordinates according to the scrollbar position */
			scroll_pos = vscrollbar_get_pos(win->window_id, win->scroll_id);
			my += scroll_pos;
		}
		// check the widgets
		glPushMatrix();
		glTranslatef((float)win->cur_x, (float)win->cur_y-scroll_pos, 0.0f);
		while (W != NULL)
		{
			if (!(W->Flags&WIDGET_DISABLED) && !(W->Flags&WIDGET_CLICK_TRANSPARENT) &&  !(W->Flags&WIDGET_INVISIBLE) &&
					mx > W->pos_x && mx <= W->pos_x + W->len_x && my > W->pos_y && my <= W->pos_y + W->len_y)
			{
				if ( widget_handle_click (W, mx - W->pos_x, my - W->pos_y, flags) )
				{
					// widget handled it
					glPopMatrix ();
					return 1;
				}
			}
			W = W->next;
		}
		glPopMatrix();

		// widgets don't deal with it, try the window handler
		if (win->click_handler != NULL)
		{
			glPushMatrix();
			glTranslatef((float)win->cur_x, (float)win->cur_y-scroll_pos, 0.0f);
			ret_val = (*win->click_handler)(win, mx, my - scroll_pos, flags);
			glPopMatrix();
		}

		if(!ret_val && win->flags&ELW_SCROLLABLE && flags &(ELW_WHEEL_UP|ELW_WHEEL_DOWN)) {
			/* Scroll, pass to our scroll widget */
			if(flags&ELW_WHEEL_UP) {
				vscrollbar_scroll_up(win->window_id, win->scroll_id);
			} else if(flags&ELW_WHEEL_DOWN) {
				vscrollbar_scroll_down(win->window_id, win->scroll_id);
			}
		} else if ( !ret_val && (win->flags & ELW_CLICK_TRANSPARENT) && my >= 0 ) {
			return 0;	// click is not handled, and the window is transparent
		}
		return	1;	// click is handled
	}
#ifdef OPENGL_TRACE
CHECK_GL_ERRORS();
#endif //OPENGL_TRACE

	return 0;
}


int	drag_in_window(int win_id, int x, int y, Uint32 flags, int dx, int dy)
{
	window_info *win;
	int	mx, my;
	int scroll_pos = 0;
	widget_list *W;

	if(win_id < 0 || win_id >= windows_list.num_windows)
		return -1;
	if(windows_list.window[win_id].window_id != win_id)
		return -1;

	win= &windows_list.window[win_id];
	W = win->widgetlist;

	mx = x - win->cur_x;
	my = y - win->cur_y;

	if(win->flags&ELW_SCROLLABLE) {
		/* Adjust mouse y coordinates according to the scrollbar position */
		scroll_pos = vscrollbar_get_pos(win->window_id, win->scroll_id);
		my += scroll_pos;
	}
	if (cur_drag_widget)
	{
		// Check if cur_drag_widget is indeed one of our widgets
		while (W && W != cur_drag_widget)
			W = W->next;

		if (W && !(W->Flags & WIDGET_DISABLED))
		{
			int ret_val;

			glPushMatrix ();
			glTranslatef ((float)win->cur_x, (float)win->cur_y-scroll_pos, 0.0f);
			ret_val = widget_handle_drag (W, mx - W->pos_x, my - W->pos_y, flags, dx, dy);
			glPopMatrix ();
			if (ret_val)
				// widget handled it
				return 1;
		}

		// If we got here, cur_drag_widget isn't in this window, or
		// is unable to handle the drag request. Reset it and continue.
		cur_drag_widget = NULL;
	}

	if(win->drag_in || mouse_in_window(win_id, x, y) > 0)
	{
		// widgets
		glPushMatrix();
		glTranslatef((float)win->cur_x, (float)win->cur_y-scroll_pos, 0.0f);
		while (W != NULL)
		{
			if (mx > W->pos_x && mx <= W->pos_x + W->len_x && my> W ->pos_y && my <= W->pos_y+W->len_y)
			{
				if (!(W->Flags&WIDGET_DISABLED)) {
					if ( widget_handle_drag (W, mx - W->pos_x, my - W->pos_y, flags, dx, dy) )
					{
						// widget handled it
						glPopMatrix ();
						cur_drag_widget = W;
						return 1;
					}
				}
			}
			W = W->next;
		}
		glPopMatrix();

		// widgets don't deal with it, try the window handler
		if (win->drag_handler != NULL)
		{
			glPushMatrix();
			glTranslatef((float)win->cur_x, (float)win->cur_y-scroll_pos, 0.0f);
			glPopMatrix();
		}
		return	1;	// drag has been processed
	}
#ifdef OPENGL_TRACE
CHECK_GL_ERRORS();
#endif //OPENGL_TRACE

	return 0;
}

int	mouseover_window (int win_id, int x, int y)
{
	window_info *win;
	int	mx, my;
	int	ret_val=0;
	int scroll_pos = 0;
	widget_list *W;

	if(win_id < 0 || win_id >= windows_list.num_windows)	return -1;
	if(windows_list.window[win_id].window_id != win_id)	return -1;
	win = &windows_list.window[win_id];
	W = win->widgetlist;

	if (mouse_in_window (win_id, x, y) > 0)
	{
		mx = x - win->cur_x;
		my = y - win->cur_y;

		if(win->flags&ELW_SCROLLABLE) {
			/* Adjust mouse y coordinates according to the scrollbar position */
			scroll_pos = vscrollbar_get_pos(win->window_id, win->scroll_id);
			my += scroll_pos;
		} else {
			scroll_pos = 0;
		}
		// widgets
		glPushMatrix();
		glTranslatef((float)win->cur_x, (float)win->cur_y-scroll_pos, 0.0f);
		while (W != NULL)
		{
			if (mx > W->pos_x && mx <= W->pos_x + W->len_x && my > W->pos_y && my <= W->pos_y+W->len_y)
			{
				if (!(W->Flags&WIDGET_DISABLED)) {
					// don't return on mouseover. hopefully it
					// won't destroy our window...
					widget_handle_mouseover (W, mx, my);
				}
			}
			W = W->next;
		}
		glPopMatrix();

		// use the handler if present
		if(win->mouseover_handler)
		{
			glPushMatrix();
			glTranslatef ((float)win->cur_x, (float)win->cur_y-scroll_pos, 0.0f);
			ret_val = (*win->mouseover_handler)(win, mx, my);
			glPopMatrix();

		}
#ifdef	ELC
		if (!ret_val)
			elwin_mouse = CURSOR_ARROW;
#endif	//ELC
#ifdef OPENGL_TRACE
CHECK_GL_ERRORS();
#endif //OPENGL_TRACE

		return 1;
	}

	return 0;
}

int	keypress_in_window(int win_id, int x, int y, SDL_Keycode key_code, Uint32 key_unicode, Uint16 key_mod)
{
	window_info *win;
	int	mx, my;
	int scroll_pos = 0;
   	widget_list *W;

	if(win_id < 0 || win_id >= windows_list.num_windows
	|| windows_list.window[win_id].window_id != win_id) {
		return -1;
	}
	win = &windows_list.window[win_id];
	W = win->widgetlist;

	if (mouse_in_window (win_id, x, y) > 0)
	{
		if ((win->custom_scale != NULL) && (!managed_windows.disable_mouse_or_keys_scaling))
		{
			int actioned = 1;
			if (KEY_DEF_CMP(K_WINSCALEUP, key_code, key_mod))
				step_win_scale_factor(1, win->custom_scale);
			else if (KEY_DEF_CMP(K_WINSCALEDOWN, key_code, key_mod))
				step_win_scale_factor(0, win->custom_scale);
			else if (KEY_DEF_CMP(K_WINSCALEDEF, key_code, key_mod))
				reset_win_scale_factor(1, win->custom_scale);
			else if (KEY_DEF_CMP(K_WINSCALEINIT, key_code, key_mod))
				reset_win_scale_factor(0, win->custom_scale);
			else
				actioned = 0;
			if (actioned)
				return 1;
		}

		mx = x - win->cur_x;
		my = y - win->cur_y;

		if(win->flags&ELW_SCROLLABLE) {
			/* Adjust mouse y coordinates according to the scrollbar position */
			scroll_pos = vscrollbar_get_pos(win->window_id, win->scroll_id);
			my += scroll_pos;
		} else {
			scroll_pos = 0;
		}
		// widgets
		glPushMatrix();
		glTranslatef((float)win->cur_x, (float)win->cur_y-scroll_pos, 0.0f);
		while(W != NULL)
		{
			if (mx > W->pos_x && mx <= W->pos_x + W->len_x && my > W->pos_y && my <= W->pos_y+W->len_y)
			{
				if (!(W->Flags&WIDGET_DISABLED)) {
					if ( widget_handle_keypress (W, mx - W->pos_x, my - W->pos_y, key_code, key_unicode, key_mod) )
					{
						// widget handled it
						glPopMatrix ();
#ifdef OPENGL_TRACE
CHECK_GL_ERRORS();
#endif //OPENGL_TRACE
						return 1;
					}
				}
			}
			W = W->next;
		}
		glPopMatrix();

		// widgets don't deal with it, try the window handler
		if(win->keypress_handler != NULL)
		{
			int ret_val;

			glPushMatrix();
			glTranslatef((float)win->cur_x, (float)win->cur_y, 0.0f);
			ret_val = (*win->keypress_handler) (win, mx, my, key_code, key_unicode, key_mod);
			glPopMatrix();
#ifdef OPENGL_TRACE
CHECK_GL_ERRORS();
#endif //OPENGL_TRACE

			return ret_val; // keypresses are fall-through
		}
	}
#ifdef OPENGL_TRACE
CHECK_GL_ERRORS();
#endif //OPENGL_TRACE

	return 0;
}

void	*set_window_handler(int win_id, int handler_id, int (*handler)() )
{
	void	*old_handler;

	if(win_id < 0 || win_id >= windows_list.num_windows)	return NULL;
	if(windows_list.window[win_id].window_id != win_id)	return NULL;

	// save the information
	switch(handler_id){
		case	ELW_HANDLER_INIT:
			old_handler= (void *)windows_list.window[win_id].init_handler;
			windows_list.window[win_id].init_handler=handler;
			break;
		case	ELW_HANDLER_DISPLAY:
			old_handler= (void *)windows_list.window[win_id].display_handler;
			windows_list.window[win_id].display_handler=handler;
			break;
		case	ELW_HANDLER_PRE_DISPLAY:
			old_handler= (void *)windows_list.window[win_id].pre_display_handler;
			windows_list.window[win_id].pre_display_handler=handler;
			break;
		case	ELW_HANDLER_POST_DISPLAY:
			old_handler= (void *)windows_list.window[win_id].post_display_handler;
			windows_list.window[win_id].post_display_handler=handler;
			break;
		case	ELW_HANDLER_CLICK:
			old_handler= (void *)windows_list.window[win_id].click_handler;
			windows_list.window[win_id].click_handler=handler;
			break;
		case	ELW_HANDLER_DRAG:
			old_handler= (void *)windows_list.window[win_id].drag_handler;
			windows_list.window[win_id].drag_handler=handler;
			break;
		case	ELW_HANDLER_MOUSEOVER:
			old_handler= (void *)windows_list.window[win_id].mouseover_handler;
			windows_list.window[win_id].mouseover_handler=handler;
			break;
		case	ELW_HANDLER_RESIZE:
			old_handler= (void *)windows_list.window[win_id].resize_handler;
			windows_list.window[win_id].resize_handler=handler;
			break;
		case	ELW_HANDLER_KEYPRESS:
			old_handler= (void *)windows_list.window[win_id].keypress_handler;
			windows_list.window[win_id].keypress_handler=handler;
			break;
		case	ELW_HANDLER_CLOSE:
			old_handler= (void *)windows_list.window[win_id].close_handler;
			windows_list.window[win_id].close_handler=handler;
			break;
		case	ELW_HANDLER_DESTROY:
			old_handler= (void *)windows_list.window[win_id].destroy_handler;
			windows_list.window[win_id].destroy_handler=handler;
			break;
		case	ELW_HANDLER_SHOW:
			old_handler= (void *)windows_list.window[win_id].show_handler;
			windows_list.window[win_id].show_handler=handler;
			break;
		case	ELW_HANDLER_AFTER_SHOW:
			old_handler= (void *)windows_list.window[win_id].after_show_handler;
			windows_list.window[win_id].after_show_handler=handler;
			break;
		case	ELW_HANDLER_HIDE:
			old_handler= (void *)windows_list.window[win_id].hide_handler;
			windows_list.window[win_id].hide_handler=handler;
			break;
		case	ELW_HANDLER_UI_SCALE:
			old_handler= (void *)windows_list.window[win_id].ui_scale_handler;
			windows_list.window[win_id].ui_scale_handler=handler;
			break;
		case	ELW_HANDLER_FONT_CHANGE:
			old_handler= (void *)windows_list.window[win_id].font_change_handler;
			windows_list.window[win_id].font_change_handler=handler;
			break;
		default:
			old_handler=NULL;
	}

	return old_handler;
}

int	set_window_color(int win_id, Uint32 color_id, float r, float g, float b, float a)
{
	if(win_id < 0 || win_id >= windows_list.num_windows)	return 0;
	if(windows_list.window[win_id].window_id != win_id)	return 0;

	// save the information
	switch(color_id){
		case	ELW_COLOR_BACK:
			windows_list.window[win_id].back_color[0]= r;
			windows_list.window[win_id].back_color[1]= g;
			windows_list.window[win_id].back_color[2]= b;
			windows_list.window[win_id].back_color[3]= a;
			return	1;

		case	ELW_COLOR_BORDER:
			windows_list.window[win_id].border_color[0]= r;
			windows_list.window[win_id].border_color[1]= g;
			windows_list.window[win_id].border_color[2]= b;
			windows_list.window[win_id].border_color[3]= a;
			if(windows_list.window[win_id].flags&ELW_SCROLLABLE) {
				/* Update the color of the scroll widget too */
				widget_set_color(win_id, windows_list.window[win_id].scroll_id, r, g, b);
			}
			return	1;

		case	ELW_COLOR_LINE:
			windows_list.window[win_id].line_color[0]= r;
			windows_list.window[win_id].line_color[1]= g;
			windows_list.window[win_id].line_color[2]= b;
			windows_list.window[win_id].line_color[3]= a;
			return	1;
	}
	return 0;
}

int	use_window_color(int win_id, Uint32 color_id)
{
	if(win_id < 0 || win_id >= windows_list.num_windows)	return 0;
	if(windows_list.window[win_id].window_id != win_id)	return 0;

	// save the information
	switch(color_id){
		case	ELW_COLOR_BACK:
			glColor4f(windows_list.window[win_id].back_color[0], windows_list.window[win_id].back_color[1], windows_list.window[win_id].back_color[2], windows_list.window[win_id].back_color[3]);
			return	1;

		case	ELW_COLOR_BORDER:
			glColor3f(windows_list.window[win_id].border_color[0], windows_list.window[win_id].border_color[1], windows_list.window[win_id].border_color[2]);
			return	1;

		case	ELW_COLOR_LINE:
			glColor3f(windows_list.window[win_id].line_color[0], windows_list.window[win_id].line_color[1], windows_list.window[win_id].line_color[2]);
			return	1;
	}
	return 0;
}

int set_window_min_size (int win_id, int width, int height)
{
	if (win_id < 0 || win_id >= windows_list.num_windows)	return 0;
	if (windows_list.window[win_id].window_id != win_id)	return 0;
	if (width < 0 || height < 0)	return 0;

	windows_list.window[win_id].min_len_x = width;
	windows_list.window[win_id].min_len_y = height;

	return 1;
}

int set_window_flag (int win_id, Uint32 flag)
{
	if (win_id < 0 || win_id >= windows_list.num_windows)	return 0;
	if (windows_list.window[win_id].window_id != win_id)	return 0;

	windows_list.window[win_id].flags |= flag;
	return windows_list.window[win_id].flags;
}

void set_window_scroll_len(int win_id, int bar_len)
{
	if(windows_list.window[win_id].flags&ELW_SCROLLABLE) {
		vscrollbar_set_bar_len (win_id, windows_list.window[win_id].scroll_id, bar_len);
	}
}

void set_window_scroll_yoffset(int win_id, int yoffset)
{
	if(windows_list.window[win_id].flags&ELW_SCROLLABLE)
	{
		windows_list.window[win_id].scroll_yoffset = yoffset;
		resize_scrollbar(&windows_list.window[win_id]);
	}
}

void set_window_scroll_inc(int win_id, int inc)
{
	if(windows_list.window[win_id].flags&ELW_SCROLLABLE)
		vscrollbar_set_pos_inc(win_id, windows_list.window[win_id].scroll_id, inc);
}

void set_window_scroll_pos(int win_id, int pos)
{
	if(windows_list.window[win_id].flags&ELW_SCROLLABLE)
		vscrollbar_set_pos(win_id, windows_list.window[win_id].scroll_id, pos);
}

int get_window_scroll_pos(int win_id)
{
	if(windows_list.window[win_id].flags&ELW_SCROLLABLE)
		return vscrollbar_get_pos(win_id, windows_list.window[win_id].scroll_id);
	else
		return 0;
}

int set_window_font_category(int win_id, font_cat cat)
{
	if (win_id < 0 || win_id >= windows_list.num_windows) return 0;
	if (windows_list.window[win_id].window_id != win_id) return 0;

	windows_list.window[win_id].font_category = cat;
	change_window_font(&windows_list.window[win_id], cat);
	return 1;
}

int get_window_content_width(int window_id)
{
	const window_info *win;

	if (window_id < 0 || window_id >= windows_list.num_windows) return 0;
	win = &windows_list.window[window_id];
	if (win->window_id != window_id) return 0;

	if (win->scroll_id < 0)
		return win->len_x;
	else
		return win->len_x - widget_get_width(window_id, win->scroll_id);
}