#include <rtthread.h>

#include <sdl.h>
#include <rtdevice.h>
#include <rtgui/driver.h>

#define SDL_SCREEN_WIDTH	240
#define SDL_SCREEN_HEIGHT	320

struct sdlfb_device
{
	struct rt_device parent;

	SDL_Surface *screen;
	rt_uint16_t width;
	rt_uint16_t height;
};
struct sdlfb_device _device;

/* common device interface */
static rt_err_t  sdlfb_init(rt_device_t dev)
{
	return RT_EOK;
}
static rt_err_t  sdlfb_open(rt_device_t dev, rt_uint16_t oflag)
{
	return RT_EOK;
}
static rt_err_t  sdlfb_close(rt_device_t dev)
{
	SDL_Quit();
	return RT_EOK;
}
static rt_err_t  sdlfb_control(rt_device_t dev, rt_uint8_t cmd, void *args)
{
	struct sdlfb_device *device;

	device = (struct sdlfb_device*)dev;
	RT_ASSERT(device != RT_NULL);
	RT_ASSERT(device->screen != RT_NULL);

	switch (cmd)
	{
	case RTGRAPHIC_CTRL_GET_INFO:
		{
		struct rt_device_graphic_info *info;

		info = (struct rt_device_graphic_info*) args;
		info->bits_per_pixel = 16;
		info->pixel_format = RTGRAPHIC_PIXEL_FORMAT_RGB565P;
		info->framebuffer = device->screen->pixels;
		info->width = device->screen->w;
		info->height = device->screen->h;
		}
		break;
	case RTGRAPHIC_CTRL_RECT_UPDATE:
		{
		struct rt_device_rect_info *rect;
		rect = (struct rt_device_rect_info*)args;

		/* SDL_UpdateRect(_device.screen, rect->x, rect->y, rect->x + rect->w, rect->y + rect->h); */
		SDL_UpdateRect(_device.screen, 0, 0, device->width, device->height);
		}
		break;
	case RTGRAPHIC_CTRL_SET_MODE:
		{		
#if 0
		struct rt_device_rect_info* rect;

		rect = (struct rt_device_rect_info*)args;
		if ((_device.width == rect->width) && (_device.height == rect->height)) return -RT_ERROR;
		
		_device.width = rect->width;
		_device.height = rect->height;
		
		if (_device.screen != RT_NULL)
		{
			SDL_FreeSurface(_device.screen);
		
			/* re-create screen surface */
			_device.screen = SDL_SetVideoMode(_device.width, _device.height, 16, SDL_SWSURFACE | SDL_DOUBLEBUF);
			if ( _device.screen == NULL )
			{
				fprintf(stderr, "Couldn't set video mode: %s\n", SDL_GetError());
				exit(1);
			}

			SDL_WM_SetCaption ("RT-Thread/GUI Simulator", NULL);
		}
#endif
		}
		break;
	}

	return RT_EOK;
}

static void sdlfb_hw_init(void)
{
	/* set video driver for VC++ debug */
	//_putenv("SDL_VIDEODRIVER=windib");

	//if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_AUDIO) < 0)
	if (SDL_Init(SDL_INIT_EVERYTHING) < 0)
	{
        fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
        exit(1);
    }

	_device.parent.init = sdlfb_init;
	_device.parent.open = sdlfb_open;
	_device.parent.close = sdlfb_close;
	_device.parent.read = RT_NULL;
	_device.parent.write = RT_NULL;
	_device.parent.control = sdlfb_control;

	_device.width  = SDL_SCREEN_WIDTH;
	_device.height = SDL_SCREEN_HEIGHT;
	_device.screen = SDL_SetVideoMode(_device.width, _device.height, 16, SDL_SWSURFACE | SDL_DOUBLEBUF);
    if (_device.screen == NULL)
	{
        fprintf(stderr, "Couldn't set video mode: %s\n", SDL_GetError());
        exit(1);
    }

	SDL_WM_SetCaption ("RT-Thread/GUI Simulator", NULL);
	rt_device_register(RT_DEVICE(&_device), "sdl", RT_DEVICE_FLAG_RDWR);
}

#include  <windows.h>
#include  <mmsystem.h>
#include  <stdio.h>
#include <sdl.h>
#include <rtgui/event.h>
#include <rtgui/kbddef.h>
#include <rtgui/rtgui_server.h>
#include <rtgui/rtgui_system.h>

static DWORD WINAPI sdl_loop(LPVOID lpParam)
{
	int quit = 0;
	SDL_Event event;
	int button_state = 0;

	rt_device_t device;
	sdlfb_hw_init();

	device = rt_device_find("sdl");
	rtgui_graphic_set_device(device);

	/* handle SDL event */
	while(!quit)
	{
		while ( SDL_PollEvent(&event) )
		{
			switch (event.type)
			{
			case SDL_MOUSEMOTION:
				{
					struct rtgui_event_mouse emouse;
					emouse.parent.type = RTGUI_EVENT_MOUSE_MOTION;
					emouse.parent.sender = RT_NULL;
					emouse.wid = RT_NULL;

					emouse.x = ((SDL_MouseMotionEvent*)&event)->x;
					emouse.y = ((SDL_MouseMotionEvent*)&event)->y;

					/* init mouse button */
					emouse.button = button_state;

					/* send event to server */
					rtgui_server_post_event(&emouse.parent, sizeof(struct rtgui_event_mouse));
				}
				break;

			case SDL_MOUSEBUTTONDOWN:
			case SDL_MOUSEBUTTONUP:
				{
					struct rtgui_event_mouse emouse;
					SDL_MouseButtonEvent* mb;

					emouse.parent.type = RTGUI_EVENT_MOUSE_BUTTON;
					emouse.parent.sender = RT_NULL;
					emouse.wid = RT_NULL;

					mb = (SDL_MouseButtonEvent*)&event;

					emouse.x = mb->x;
					emouse.y = mb->y;

					/* init mouse button */
					emouse.button = 0;

					/* set emouse button */
					if (mb->button & (1 << (SDL_BUTTON_LEFT - 1)) )
					{
						emouse.button |= RTGUI_MOUSE_BUTTON_LEFT;
					}
					else if (mb->button & (1 << (SDL_BUTTON_RIGHT - 1)))
					{
						emouse.button |= RTGUI_MOUSE_BUTTON_RIGHT;
					}
					else if (mb->button & (1 << (SDL_BUTTON_MIDDLE - 1)))
					{
						emouse.button |= RTGUI_MOUSE_BUTTON_MIDDLE;
					}

					if (mb->type == SDL_MOUSEBUTTONDOWN)
					{
						emouse.button |= RTGUI_MOUSE_BUTTON_DOWN;
						button_state = emouse.button;
					}
					else
					{
						emouse.button |= RTGUI_MOUSE_BUTTON_UP;
						button_state = 0;
					}


					/* send event to server */
					rtgui_server_post_event(&emouse.parent, sizeof(struct rtgui_event_mouse));
				}
				break;

			case SDL_KEYUP:
				{
					struct rtgui_event_kbd ekbd;
					ekbd.parent.type	= RTGUI_EVENT_KBD;
					ekbd.parent.sender	= RT_NULL;
					ekbd.type = RTGUI_KEYUP;
					ekbd.wid = RT_NULL;
					ekbd.mod = event.key.keysym.mod;
					ekbd.key = event.key.keysym.sym;

					/* FIXME: unicode */
					ekbd.unicode = 0;

					/* send event to server */
					rtgui_server_post_event(&ekbd.parent, sizeof(struct rtgui_event_kbd));
				}
				break;

			case SDL_KEYDOWN:
				{
					struct rtgui_event_kbd ekbd;
					ekbd.parent.type	= RTGUI_EVENT_KBD;
					ekbd.parent.sender	= RT_NULL;
					ekbd.type = RTGUI_KEYDOWN;
					ekbd.wid = RT_NULL;
					ekbd.mod = event.key.keysym.mod;
					ekbd.key = event.key.keysym.sym;

					/* FIXME: unicode */
					ekbd.unicode = 0;

					/* send event to server */
					rtgui_server_post_event(&ekbd.parent, sizeof(struct rtgui_event_kbd));
				}
				break;

			case SDL_QUIT:
				SDL_Quit();
				quit = 1;
				break;

			default:
				break;
			}

			SDL_Delay(20);
		}
		if (quit)
			break;
	}
	//exit(0);
	return 0;
}

void sdl_start(void)
{
	HANDLE thread;
	DWORD  thread_id; 

	/* create thread that loop sdl event */
    thread = CreateThread(NULL,
                          0,
                         (LPTHREAD_START_ROUTINE)sdl_loop,
                          0,
                          CREATE_SUSPENDED,
                          &thread_id);
    if(thread == NULL)
    {
        //Display Error Message

        return;
    }
    ResumeThread(thread);
}