/*
*********************************************************************************************************
*                                                uC/GUI
*                        Universal graphic software for embedded applications
*
*                       (c) Copyright 2002, Micrium Inc., Weston, FL
*                       (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*              礐/GUI is protected by international copyright laws. Knowledge of the
*              source code may not be used to write a similar product. This file may
*              only be used in accordance with a license and should not be redistributed
*              in any way. We appreciate your understanding and fairness.
*
----------------------------------------------------------------------
File        : WIDGET.h
Purpose     : Widget interface
---------------------------END-OF-HEADER------------------------------
*/

#ifndef WIDGET_H        /* Avoid multiple inclusion  */
#define WIDGET_H

#if defined(__cplusplus)
extern "C" {     /* Make sure we have C-declarations in C++ programs */
#endif

#include "WM_Intern.h"  /* Window manager, including some internals, which speed things up */

#if GUI_WINSUPPORT

#include "SCROLLBAR.h"


/*********************************************************************
*
*           defines
*
**********************************************************************
*/
#define WIDGET_H2P(hWin)        ((WIDGET*)GUI_ALLOC_h2p(hWin))


/*********************************************************************
*
*       States
*/

#define WIDGET_STATE_FOCUS              (1<<0)
#define WIDGET_STATE_VERTICAL           (1<<3)
#define WIDGET_STATE_FOCUSSABLE         (1<<4)

#define WIDGET_STATE_USER0              (1<<8)    /* Freely available for derived widget */
#define WIDGET_STATE_USER1              (1<<9)    /* Freely available for derived widget */
#define WIDGET_STATE_USER2              (1<<10)   /* Freely available for derived widget */

#define WIDGET_ITEM_DRAW                0
#define WIDGET_ITEM_GET_XSIZE           1
#define WIDGET_ITEM_GET_YSIZE           2

/*********************************************************************
*
*       Messages
*/

#define WM_WIDGET_SET_EFFECT    WM_WIDGET + 0

/*********************************************************************
*
*       Create flags
*/

#define WIDGET_CF_VERTICAL      WIDGET_STATE_VERTICAL

/*********************************************************************
*
*         typedefs
*
**********************************************************************
*/

typedef struct {
  WM_HWIN hWin;
  int     Cmd;         /* WIDGET_ITEM_GET_XSIZE, WIDGET_ITEM_GET_YSIZE, WIDGET_ITEM_DRAW, */
  int     ItemIndex;
  int     x0, y0;
} WIDGET_ITEM_DRAW_INFO;

typedef int WIDGET_DRAW_ITEM_FUNC(const WIDGET_ITEM_DRAW_INFO * pDrawItemInfo);


/*********************************************************************
*
*         Widget object
*
* The widget object is the base class for most widgets
*/
typedef struct {
  void  (*pfDrawUp)(void);
  void  (*pfDrawDown)(void);
  void  (*pfDrawUpRect)  (const GUI_RECT *pRect);
  void  (*pfDrawDownRect)(const GUI_RECT *pRect);
  void  (*pfGetRect)(GUI_RECT *pRect);
  int EffectSize;
} WIDGET_EFFECT;

typedef struct {
  WM_Obj      Win;
  const WIDGET_EFFECT* pEffect;
  I16 Id;
  U16 State;
} WIDGET;


/*********************************************************************
*
*         GUI_DRAW
*
* The GUI_DRAW object is used as base class for selfdrawing,
* non-windows objects. They are used as content of different widgets,
* such as the bitmap or header widgets.
*/
/* Declare Object struct */
typedef struct GUI_DRAW GUI_DRAW;
typedef void   GUI_DRAW_SELF_CB (void);
/* Declare Object constants (member functions etc)  */
typedef struct {
  void (* pfDraw)    (const GUI_DRAW * pObj, int x, int y);
  int  (* pfGetXSize)(const GUI_DRAW * pObj);
  int  (* pfGetYSize)(const GUI_DRAW * pObj);
} GUI_DRAW_CONSTS;

/* Declare Object */
struct GUI_DRAW {
  const GUI_DRAW_CONSTS* pConsts;
  union {
    const void * pData;
    GUI_DRAW_SELF_CB* pfDraw;
  } Data;
  I16 xOff, yOff;
};

typedef WM_HMEM GUI_DRAW_HANDLE;

/* GUI_DRAW_ API */
void GUI_DRAW__Draw    (GUI_DRAW_HANDLE hDrawObj, int x, int y);
int  GUI_DRAW__GetXSize(GUI_DRAW_HANDLE hDrawObj);
int  GUI_DRAW__GetYSize(GUI_DRAW_HANDLE hDrawObj);

/* GUI_DRAW_ Constructurs for different objects */
WM_HMEM GUI_DRAW_BITMAP_Create  (const GUI_BITMAP* pBitmap, int x, int y);
WM_HMEM GUI_DRAW_BMP_Create     (const void* pBMP, int x, int y);
WM_HMEM GUI_DRAW_STREAMED_Create(const GUI_BITMAP_STREAM * pBitmap, int x, int y);
WM_HMEM GUI_DRAW_SELF_Create(GUI_DRAW_SELF_CB* pfDraw, int x, int y);

/*********************************************************************
*
*           Global data
*
**********************************************************************
*/

extern const WIDGET_EFFECT WIDGET_Effect_3D;
extern const WIDGET_EFFECT WIDGET_Effect_3D1L;
extern const WIDGET_EFFECT WIDGET_Effect_3D2L;
extern const WIDGET_EFFECT WIDGET_Effect_None;
extern const WIDGET_EFFECT WIDGET_Effect_Simple;

/*********************************************************************
*
*           Internal API routines
*
**********************************************************************
*/

void      WIDGET__DrawFocusRect(WIDGET* pWidget, const GUI_RECT* pRect, int Dist);
void      WIDGET__DrawVLine(WIDGET* pWidget, int x, int y0, int y1);
void      WIDGET__EFFECT_DrawDownRect(WIDGET* pWidget, GUI_RECT* pRect);
void      WIDGET__EFFECT_DrawDown(WIDGET* pWidget);
void      WIDGET__EFFECT_DrawUpRect(WIDGET* pWidget, GUI_RECT* pRect);
void      WIDGET__FillRectEx(WIDGET* pWidget, const GUI_RECT* pRect);
int       WIDGET__GetWindowSizeX(WM_HWIN hWin);
GUI_COLOR WIDGET__GetBkColor(WM_HWIN hObj);
int       WIDGET__GetXSize(const WIDGET* pWidget);
int       WIDGET__GetYSize(const WIDGET* pWidget);
void      WIDGET__GetClientRect(WIDGET* pWidget, GUI_RECT* pRect);
void      WIDGET__GetInsideRect(WIDGET* pWidget, GUI_RECT* pRect);
void      WIDGET__Init(WIDGET* pWidget, int Id, U16 State);
void      WIDGET__RotateRect90(WIDGET* pWidget, GUI_RECT* pDest, const GUI_RECT* pRect);
void      WIDGET__SetScrollState(WM_HWIN hWin, const WM_SCROLL_STATE* pVState, const WM_SCROLL_STATE* pState);
void      WIDGET__FillStringInRect(const char GUI_UNI_PTR * pText, const GUI_RECT * pFillRect, const GUI_RECT * pTextRectMax, const GUI_RECT * pTextRectAct);

/*********************************************************************
*
*           API routines
*
**********************************************************************
*/
void  WIDGET_SetState     (WM_HWIN hObj, int State);
void  WIDGET_AndState     (WM_HWIN hObj, int State);
void  WIDGET_OrState      (WM_HWIN hObj, int State);
int   WIDGET_HandleActive (WM_HWIN hObj, WM_MESSAGE* pMsg);
int   WIDGET_GetState     (WM_HWIN hObj);
int   WIDGET_SetWidth     (WM_HWIN hObj, int Width);

void  WIDGET_EFFECT_3D_DrawUp(void);

void  WIDGET_SetDefaultEffect_3D    (void);
void  WIDGET_SetDefaultEffect_3D1L  (void);
void  WIDGET_SetDefaultEffect_3D2L  (void);
void  WIDGET_SetDefaultEffect_None  (void);
void  WIDGET_SetDefaultEffect_Simple(void);

const WIDGET_EFFECT* WIDGET_SetDefaultEffect(const WIDGET_EFFECT* pEffect);

void  WIDGET_SetEffect              (WM_HWIN hObj, const WIDGET_EFFECT* pEffect);

const WIDGET_EFFECT* WIDGET_GetDefaultEffect(void);
int   WIDGET_SetWidth(WM_HWIN hObj, int Width);


#endif /* GUI_WINSUPPORT */

#if defined(__cplusplus)
  }
#endif

#endif   /* SLIDER_H */