/*****************************************************************************
* 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 <windows.h>
#include <string.h>
#include "../addresses.h"
#include "../localisation/localisation.h"
#include "../sprites.h"
#include "../interface/widget.h"
#include "../interface/window.h"

enum WINDOW_MUSIC_CREDITS_WIDGET_IDX {
	WIDX_BACKGROUND,
	WIDX_TITLE,
	WIDX_CLOSE
};

rct_widget window_music_credits_widgets[] = {
	{ WWT_FRAME,	0,	0,		509,	0,	313,	0x0FFFFFFFF,				STR_NONE },				// panel / background
	{ WWT_CAPTION,	0,	1,		508,	1,	14,		STR_MUSIC_ACKNOWLEDGEMENTS,	STR_WINDOW_TITLE_TIP },	// title bar
	{ WWT_CLOSEBOX,	0,	497,	507,	2,	13,		STR_CLOSE_X,				STR_CLOSE_WINDOW_TIP },	// close x button
	{ WWT_SCROLL,	0,	4,		505,	18,	309,	2,							STR_NONE },				// scroll
	{ WIDGETS_END },
};

static void window_music_credits_emptysub() { }
static void window_music_credits_mouseup();
static void window_music_credits_scrollgetsize();
static void window_music_credits_paint();
static void window_music_credits_scrollpaint();

static void* window_music_credits_events[] = {
	window_music_credits_emptysub,
	window_music_credits_mouseup,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_scrollgetsize,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_emptysub,
	window_music_credits_paint,
	window_music_credits_scrollpaint
};

/**
*
*  rct2: 0x0066D55B
*/
void window_music_credits_open()
{
	rct_window* window;

	// Check if window is already open
	window = window_bring_to_front_by_id(WC_MUSIC_CREDITS, 0);
	if (window != NULL)
		return;

	window = window_create(
		RCT2_GLOBAL(RCT2_ADDRESS_SCREEN_WIDTH, uint16) / 2 - 255,
		max(28, RCT2_GLOBAL(RCT2_ADDRESS_SCREEN_HEIGHT, uint16) / 2 - 157),
		510,
		314,
		(uint32*)window_music_credits_events,
		WC_MUSIC_CREDITS,
		0
		);

	window->widgets = window_music_credits_widgets;
	window->enabled_widgets = 1 << WIDX_CLOSE;

	window_init_scroll_widgets(window);
	window->colours[0] = 7;
	window->colours[1] = 7;
	window->colours[2] = 7;
	
}

/**
*
*  rct2: 0x0066DB2C
*/
static void window_music_credits_mouseup()
{
	short widgetIndex;
	rct_window *w;

	window_widget_get_registers(w, widgetIndex);

	switch (widgetIndex) {
	case WIDX_CLOSE:
		window_close(w);
		break;
	}
}

/**
 *
 *  rct2: 0x0066DB37
 */
static void window_music_credits_scrollgetsize()
{
	int y = 560;

	#ifdef _MSC_VER
	__asm mov edx, y
	#else
	__asm__("mov edx, %[y] " : [y] "+m" (y));
	#endif
}

/**
*
*  rct2: 0x0066D7B9
*/
static void window_music_credits_paint()
{
	rct_window *w;
	rct_drawpixelinfo *dpi;

	window_paint_get_registers(w, dpi);

	window_draw_widgets(w, dpi);
}

/**
 *
 *  rct2: 0x0066D7BF
 */
static void window_music_credits_scrollpaint()
{
	rct_window *w;
	rct_drawpixelinfo *dpi;
	window_paint_get_registers(w, dpi);

	int x = 245;

	int y = 2;
	int string = 0xB30;
	for (int i = 0; i < 12; i++) {
		gfx_draw_string_centred(dpi, string, x, y, 0, 0);
		y += 10;
		if (i == 10) { // Add 4 more space before "Original recordings ...".
			y += 4;
		}
		string += 1;
	}

	// Draw the separator
	y += 5;
	gfx_fill_rect_inset(dpi, 4, y, 484, y+1, w->colours[1], 0x20);
	y += 11;

	for (int i = 0; i < 31; i++) {
		if (i == 21) { // Move special courtesy to below Hypothermia.
			gfx_draw_string_centred(dpi, string + 4, x, y, 0, 0);
			y += 10;
			continue;
		} else if (i == 25) { // Remove special courtesy and blank line.
			string += 2;
		}
		gfx_draw_string_centred(dpi, string, x, y, 0, 0);
		y += 10;
		string += 1;
	}
	
}