/*
 * File      : rtgui.h
 * This file is part of RT-Thread GUI
 * COPYRIGHT (C) 2009 - 2013, RT-Thread Development Team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  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, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Change Logs:
 * Date           Author       Notes
 * 2009-10-04     Bernard      first version
 */
#ifndef __RT_GUI_H__
#define __RT_GUI_H__

#include <rtthread.h>
#include <rtgui/rtgui_config.h>

#ifdef __cplusplus
extern "C" {
#endif

#define RTGUI_VERSION          0L        /**< major version number */
#define RTGUI_SUBVERSION       8L        /**< minor version number */
#define RTGUI_REVISION         1L        /**< revise version number */
#define RTGUI_CODENAME         "Newton"  /**< code name */

#define RT_INT16_MAX        32767
#define RT_INT16_MIN        (-RT_INT16_MAX-1)
#define RTGUI_NOT_FOUND     (-1)

#define _UI_MIN(x, y)			(((x)<(y))?(x):(y))
#define _UI_MAX(x, y)			(((x)>(y))?(x):(y))
#define _UI_BITBYTES(bits)		((bits + 7)/8)
#define _UI_ABS(x)				((x)>=0? (x):-(x))

/* MDK, GCC and MSVC all support __restrict keyword. */
#define RTGUI_RESTRICT      __restrict
#ifdef _MSC_VER
#define RTGUI_PURE
#else
/* GCC and MDK share the same attributes.
 * TODO: IAR attributes. */
#define RTGUI_PURE __attribute__((pure))
#endif

struct rtgui_event;

struct rtgui_object;
struct rtgui_widget;
struct rtgui_win;
struct rtgui_font;

typedef struct rtgui_win rtgui_win_t;
typedef rt_bool_t (*rtgui_event_handler_ptr)(struct rtgui_object *object, struct rtgui_event *event);
typedef void (*rtgui_onbutton_func_t)(struct rtgui_object *object, struct rtgui_event *event);

/**
 * Coordinate point
 */
struct rtgui_point
{
    rt_int16_t x, y;
};
typedef struct rtgui_point rtgui_point_t;
extern rtgui_point_t rtgui_empty_point;

/**
 * Rectangle structure
 */
struct rtgui_rect
{
    rt_int16_t x1, y1, x2, y2;
};
typedef struct rtgui_rect rtgui_rect_t;
#define rtgui_rect_width(r)     ((r).x2 - (r).x1)
#define rtgui_rect_height(r)    ((r).y2 - (r).y1)

typedef unsigned long rtgui_color_t;

/**
 * Graphic context
 */
struct rtgui_gc
{
    /* foreground and background color */
    rtgui_color_t foreground, background;

    /* text style */
    rt_uint16_t textstyle;
    /* text align */
    rt_uint16_t textalign;

    /* font */
    struct rtgui_font *font;
};
typedef struct rtgui_gc rtgui_gc_t;

enum RTGUI_MARGIN_STYLE
{
    RTGUI_MARGIN_LEFT   = 0x01,
    RTGUI_MARGIN_RIGHT  = 0x02,
    RTGUI_MARGIN_TOP    = 0x04,
    RTGUI_MARGIN_BOTTOM = 0x08,
    RTGUI_MARGIN_ALL = RTGUI_MARGIN_LEFT | RTGUI_MARGIN_RIGHT | RTGUI_MARGIN_TOP | RTGUI_MARGIN_BOTTOM
};

/**
 * Border style
 */
enum RTGUI_BORDER_STYLE
{
    RTGUI_BORDER_NONE = 0,
    RTGUI_BORDER_SIMPLE,
    RTGUI_BORDER_RAISE,
    RTGUI_BORDER_SUNKEN,
    RTGUI_BORDER_BOX,
    RTGUI_BORDER_STATIC,
    RTGUI_BORDER_EXTRA,
    RTGUI_BORDER_UP,
    RTGUI_BORDER_DOWN
};
#define RTGUI_BORDER_DEFAULT_WIDTH  2
#define RTGUI_WIDGET_DEFAULT_MARGIN 3

/**
 * Blend mode
 */ 
enum RTGUI_BLENDMODE
{
	RTGUI_BLENDMODE_NONE = 0x00, 
	RTGUI_BLENDMODE_BLEND,
	RTGUI_BLENDMODE_ADD,
	RTGUI_BLENDMODE_MOD,
};

/**
 * Orientation
 */
enum RTGUI_ORIENTATION
{
    RTGUI_HORIZONTAL        = 0x01,
    RTGUI_VERTICAL          = 0x02,
    RTGUI_ORIENTATION_BOTH  = RTGUI_HORIZONTAL | RTGUI_VERTICAL
};

enum RTGUI_ALIGN
{
    RTGUI_ALIGN_NOT                 = 0x00,
    RTGUI_ALIGN_CENTER_HORIZONTAL   = 0x01,
    RTGUI_ALIGN_LEFT                = RTGUI_ALIGN_NOT,
    RTGUI_ALIGN_TOP                 = RTGUI_ALIGN_NOT,
    RTGUI_ALIGN_RIGHT               = 0x02,
    RTGUI_ALIGN_BOTTOM              = 0x04,
    RTGUI_ALIGN_CENTER_VERTICAL     = 0x08,
    RTGUI_ALIGN_CENTER              = RTGUI_ALIGN_CENTER_HORIZONTAL | RTGUI_ALIGN_CENTER_VERTICAL,
    RTGUI_ALIGN_EXPAND              = 0x10,
    RTGUI_ALIGN_STRETCH             = 0x20,
};

enum RTGUI_TEXTSTYLE
{
    RTGUI_TEXTSTYLE_NORMAL          = 0x00,
    RTGUI_TEXTSTYLE_DRAW_BACKGROUND = 0x01,
    RTGUI_TEXTSTYLE_SHADOW          = 0x02,
    RTGUI_TEXTSTYLE_OUTLINE         = 0x04,
};

enum RTGUI_MODAL_CODE
{
    RTGUI_MODAL_OK,
    RTGUI_MODAL_CANCEL
};
typedef enum RTGUI_MODAL_CODE rtgui_modal_code_t;

#include <rtgui/rtgui_object.h>

#ifdef __cplusplus
}
#endif

#endif