/*****************************************************************************
* Copyright (c) 2014 Ted John
* OpenRCT2, an open source clone of Roller Coaster Tycoon 2.
*
* This file is part of OpenRCT2.
*
* OpenRCT2 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 3 of the License, or
* (at your option) any later version.

* This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*****************************************************************************/

#include "addresses.h"
#include "audio.h"
#include "rct2.h"
#include "window.h"

#define RCT2_FIRST_WINDOW		(RCT2_ADDRESS(RCT2_ADDRESS_WINDOW_LIST, rct_window))
#define RCT2_LAST_WINDOW		(RCT2_GLOBAL(RCT2_ADDRESS_NEW_WINDOW_PTR, rct_window*) - 1)
#define RCT2_NEW_WINDOW			(RCT2_GLOBAL(RCT2_ADDRESS_NEW_WINDOW_PTR, rct_window*))

// rct2: 0x006ED7B0
void window_update_all()
{
	rct_window *w;

	RCT2_GLOBAL(0x01423604, sint32)++;
	RCT2_GLOBAL(RCT2_ADDRESS_TOOLTIP_NOT_SHOWN_TICKS, sint16)++;
	for (w = RCT2_LAST_WINDOW; w >= RCT2_FIRST_WINDOW; w--) {
		RCT2_CALLPROC_X(w->event_handlers[WE_UPDATE], 0, 0, 0, 0, w, 0, 0);
	}

	RCT2_CALLPROC_EBPSAFE(0x006EE411);
}

/**
 * Opens a new window.
 *  rct2: 0x006EACA4
 *
 * @param x (ax)
 * @param y (eax >> 16)
 * @param width (bx)
 * @param height (ebx >> 16)
 * @param events (edx)
 * @param flags (ch)
 * @param class (cl)
 */
rct_window *window_create(int x, int y, int width, int height, uint32 *event_handlers, rct_windowclass cls, uint16 flags)
{
	rct_window *w;

	// Check if there are any window slots left
	if (RCT2_NEW_WINDOW == &(RCT2_FIRST_WINDOW[12])) {
		// Close least recently used window
		for (w = RCT2_FIRST_WINDOW; w < RCT2_NEW_WINDOW; w++)
			if (!(w->flags & 0x203))
				break;

		window_close(w);
	}

	w = RCT2_NEW_WINDOW;

	// Flags
	if (flags & 0x01) {
		for (; w >= RCT2_FIRST_WINDOW + 1; w--)
			if (((w - 1)->flags & 0x01) && !((w - 1)->flags & 0x02))
				break;
	}
	else if (flags & 0x02) {
		for (; w >= RCT2_FIRST_WINDOW + 1; w--)
			if (!((w - 1)->flags & 0x02))
				break;
	}

	// Move w to new window slot
	if (w != RCT2_NEW_WINDOW)
		*RCT2_NEW_WINDOW = *w;

	// Setup window
	w->classification = cls;
	w->var_4B8 = -1;
	w->var_4B9 = -1;
	w->flags = 0;
	w->flags |= flags;

	// Play sound
	if (!(flags & 0x03))
		sound_play_panned(40, x + (width / 2));

	w->number = 0;
	w->x = x;
	w->y = y;
	w->width = width;
	w->height = height;
	w->viewport = NULL;
	w->event_handlers = event_handlers;
	w->enabled_widgets = 0;
	w->disabled_widgets = 0;
	w->pressed_widgets = 0;
	w->var_020 = 0;
	w->var_480 = 0;
	w->var_482 = 0;
	w->var_484 = 0;
	w->var_486 = 0;
	w->var_488 = 0;
	w->var_48A = 0;
	w->var_48C = 0;
	w->var_48E = 0;
	w->var_490 = 0;
	w->var_492 = 0;
	w->var_4AC = 0;
	w->var_4AE = 0;
	RCT2_NEW_WINDOW++;

	return w;
}

/**
 * Closes the specified window.
 *  rct2: 0x006ECD4C
 *
 * @param window The window to close (esi).
 */
void window_close(rct_window* window)
{
	int num_windows;

	if (window == NULL)
		return;

	// Call close event of window
	// window_call_basic_event(window, WE_CLOSE);

	window = window_find_by_id(window->classification, window->number);

	// Remove viewport
	if (window->viewport != NULL) {
		window->viewport->width = 0;
		window->viewport = NULL;
	}

	// Invalidate the window (area)
	window_invalidate(window);

	// Remove window from list and reshift all windows
	RCT2_NEW_WINDOW--;
	num_windows = (RCT2_NEW_WINDOW - window);
	if (num_windows > 0)
		memmove(window, window + 1, num_windows * sizeof(rct_window));

	// ?
	RCT2_CALLPROC(0x006EE510);
}

/**
 *
 *  rct2: 0x006EA8A0
 * @param cls (cl)
 * @param number (dx)
 */
rct_window *window_find_by_id(rct_windowclass cls, rct_windownumber number)
{
	rct_window *w;

	if (cls & 0x80) {
		for (w = RCT2_FIRST_WINDOW; w < RCT2_NEW_WINDOW; w++)
			if (w->classification == cls)
				return w;
	} else {
		for (w = RCT2_FIRST_WINDOW; w < RCT2_NEW_WINDOW; w++)
			if (w->classification == cls && w->number == number)
				return w;
	}

	return NULL;
}

/**
 * Invalidates the specified window.
 *  rct2: 0x006EB31A
 *
 * @param window The window to invalidate (esi).
 */
void window_invalidate(rct_window *window)
{
	RCT2_CALLPROC_X(0x006EB31A, 0, 0, 0, 0, window, 0, 0);

	// if (window != NULL)
	//	gfx_set_dirty_blocks(window->x, window->y, window->x + window->width, window->y + window->height);
}

/**
 * Invalidates the specified window.
 *  rct2: 0x006EAEB8
 *
 * @param window The window (esi).
 */
void window_init_scroll_widgets(rct_window *w)
{
	RCT2_CALLPROC_X(0x006EAEB8, 0, 0, 0, 0, w, 0, 0);
}