/*
      *********************************
      *                               *
      * Text and drawing mode defines *
      *                               *
      *********************************

These defines come in two flavors: the long version (.._DRAWMODE_..)
and the short ones (.._DM_..). They are identical, feel free to use
which ever one you like best.

*/

#define GUI_DRAWMODE_NORMAL  LCD_DRAWMODE_NORMAL
#define GUI_DRAWMODE_XOR     LCD_DRAWMODE_XOR
#define GUI_DRAWMODE_TRANS   LCD_DRAWMODE_TRANS
#define GUI_DRAWMODE_REV     LCD_DRAWMODE_REV
#define GUI_DM_NORMAL        LCD_DRAWMODE_NORMAL
#define GUI_DM_XOR           LCD_DRAWMODE_XOR
#define GUI_DM_TRANS         LCD_DRAWMODE_TRANS
#define GUI_DM_REV           LCD_DRAWMODE_REV

#define GUI_TEXTMODE_NORMAL  LCD_DRAWMODE_NORMAL
#define GUI_TEXTMODE_XOR     LCD_DRAWMODE_XOR
#define GUI_TEXTMODE_TRANS   LCD_DRAWMODE_TRANS
#define GUI_TEXTMODE_REV     LCD_DRAWMODE_REV
#define GUI_TM_NORMAL        LCD_DRAWMODE_NORMAL
#define GUI_TM_XOR           LCD_DRAWMODE_XOR
#define GUI_TM_TRANS         LCD_DRAWMODE_TRANS
#define GUI_TM_REV           LCD_DRAWMODE_REV

/* Text alignment flags, horizontal */
#define GUI_TA_HORIZONTAL  (3<<0)
#define GUI_TA_LEFT        (0<<0)
#define GUI_TA_RIGHT	     (1<<0)
#define GUI_TA_CENTER	     (2<<0)
#define GUI_TA_HCENTER	   GUI_TA_CENTER  /* easier to remember :-)  */

/* Text alignment flags, vertical */
#define GUI_TA_VERTICAL   (3<<2)
#define GUI_TA_TOP	      (0<<2)
#define GUI_TA_BOTTOM	    (1<<2)
#define GUI_TA_BASELINE   (2<<2)
#define GUI_TA_VCENTER    (3<<2)

/*    *********************************
      *
      *     Min/Max coordinates
      *
      *********************************
*/
/* Define minimum and maximum coordinates in x and y */
#define GUI_XMIN -4095
#define GUI_XMAX  4095
#define GUI_YMIN -4095
#define GUI_YMAX  4095

/*********************************************************************
*
*       Support for multitasking systems (locking)
*
**********************************************************************
*/

typedef struct GUI_CONTEXT GUI_CONTEXT;

#if !GUI_OS
  #define GUI_LOCK()
  #define GUI_UNLOCK()
  #define GUITASK_INIT()
  #define GUITASK_COPY_CONTEXT()
#else
  void GUI_Lock(void);
  void GUI_Unlock(void);
  void GUITASK_Init(void);
  void GUITASK_CopyContext(void);
  GUI_CONTEXT * GUITASK_GetpContext(int Index);
  #define GUI_LOCK()             GUI_Lock()
  #define GUI_UNLOCK()           GUI_Unlock()
  #define GUITASK_INIT()         GUITASK_Init()
  #define GUITASK_COPY_CONTEXT() GUITASK_CopyContext()
#endif

/*********************************************************************
*
*             GUI_CONTEXT
*
**********************************************************************

  This structure is public for one reason only:
  To allow the application to save and restore the context.
*/

typedef union {
  U8  aColorIndex8[2];
  U16 aColorIndex16[2];
  U32 aColorIndex32[2];
} LCD_COLORINDEX_UNION;

struct GUI_CONTEXT {
/* Variables in LCD module */
  LCD_COLORINDEX_UNION LCD;
  LCD_RECT       ClipRect;
  U8             DrawMode;
  U8             SelLayer;
  U8             TextStyle;
/* Variables in GL module */
  GUI_RECT* pClipRect_HL;                /* High level clip rectangle ... Speed optimization so drawing routines can optimize */
  U8        PenSize;
  U8        PenShape;
  U8        LineStyle;
  U8        FillStyle;
/* Variables in GUICHAR module */
  const GUI_FONT           GUI_UNI_PTR * pAFont;
  #if GUI_SUPPORT_UNICODE
    const GUI_UC_ENC_APILIST * pUC_API;    /* Unicode encoding API */
  #endif
  I16P LBorder;
  I16P DispPosX, DispPosY;
  I16P DrawPosX, DrawPosY;
  I16P TextMode, TextAlign;
  GUI_COLOR Color, BkColor;           /* Required only when changing devices and for speed opt (caching) */
/* Variables in WM module */
  #if GUI_WINSUPPORT
    const GUI_RECT* WM__pUserClipRect;
    GUI_HWIN hAWin;
    int xOff, yOff;
  #endif
/* Variables in MEMDEV module (with memory devices only) */
  #if GUI_SUPPORT_DEVICES
    const tLCDDEV_APIList* pDeviceAPI;  /* function pointers only */
    GUI_HMEM    hDevData;
    GUI_RECT    ClipRectPrev;
  #endif
/* Variables in Anitaliasing module */
  #if GUI_SUPPORT_AA
    const tLCD_HL_APIList* pLCD_HL;     /* Required to reroute drawing (HLine & Pixel) to the AA module */
    U8 AA_Factor;
    U8 AA_HiResEnable;
  #endif
};

/* Rename GUI_SaveContext in order to avoid crashes if wrong GUIConf is used */
#if   ( GUI_WINSUPPORT &&  GUI_SUPPORT_DEVICES)
  #define GUI_SaveContext GUI_SaveContext_W_M
#elif (!GUI_WINSUPPORT &&  GUI_SUPPORT_DEVICES)
  #define GUI_SaveContext GUI_SaveContext_M
#elif ( GUI_WINSUPPORT && !GUI_SUPPORT_DEVICES)
  #define GUI_SaveContext GUI_SaveContext_W
#else
  #define GUI_SaveContext GUI_SaveContext_
#endif

/*********************************************************************
*
*             General routines
*
**********************************************************************
*/
int          GUI_Init             (void);
void         GUI_SetDefault       (void);
GUI_DRAWMODE GUI_SetDrawMode      (GUI_DRAWMODE dm);
const char * GUI_GetVersionString (void);
void         GUI_SaveContext      (      GUI_CONTEXT* pContext);
void         GUI_RestoreContext   (const GUI_CONTEXT* pContext);
void         GUI_SetScreenSizeX   (int xSize);
void         GUI_SetScreenSizeY   (int ySize);
int          GUI_GetScreenSizeX   (void);
int          GUI_GetScreenSizeY   (void);
const GUI_RECT * GUI_SetClipRect  (const GUI_RECT * pRect);

/*********************************************************************
*
*           Rectangle helper functions
*
**********************************************************************
*/

int  GUI_RectsIntersect(const GUI_RECT* pr0, const GUI_RECT* pr1);
void GUI_MoveRect       (GUI_RECT *pRect, int x, int y);
void GUI_MergeRect      (GUI_RECT* pDest, const GUI_RECT* pr0, const GUI_RECT* pr1);
int  GUI__IntersectRects(GUI_RECT* pDest, const GUI_RECT* pr0, const GUI_RECT* pr1);
void GUI__IntersectRect (GUI_RECT* pDest, const GUI_RECT* pr0);
void GUI__ReduceRect    (GUI_RECT* pDest, const GUI_RECT *pRect, int Dist);

/*********************************************************************
*
*       Misc helper functions
*
**********************************************************************
*/

int  GUI__DivideRound     (int a, int b);
I32  GUI__DivideRound32   (I32 a, I32 b);
int  GUI__SetText(GUI_HMEM* phText, const char* s);



/*********************************************************************
*
*      Get / Set Attributes
*
**********************************************************************
*/
 
GUI_COLOR GUI_GetBkColor     (void);
GUI_COLOR GUI_GetColor       (void);
int       GUI_GetBkColorIndex(void);
int       GUI_GetColorIndex  (void);
U8        GUI_GetPenSize     (void);
U8        GUI_GetPenShape    (void);
U8        GUI_GetLineStyle   (void);
U8        GUI_GetFillStyle   (void);

void      GUI_SetBkColor   (GUI_COLOR);
void      GUI_SetColor     (GUI_COLOR);
void      GUI_SetBkColorIndex(int Index);
void      GUI_SetColorIndex(int Index);

U8        GUI_SetPenSize   (U8 Size);
U8        GUI_SetPenShape  (U8 Shape);
U8        GUI_SetLineStyle (U8 Style);
U8        GUI_SetFillStyle (U8 Style);

/* Get/Set Character used as decimal point (usually '.' or ',') */
char      GUI_GetDecChar(void);
char      GUI_SetDecChar(char c);


/*********************************************************************
*
*       Color / Index related functions
*
**********************************************************************
*/

int       GUI_Color2Index(GUI_COLOR color);
GUI_COLOR GUI_Color2VisColor(GUI_COLOR color);
char      GUI_ColorIsAvailable(GUI_COLOR color);
GUI_COLOR GUI_Index2Color(int Index);
void      GUI_InitLUT(void);
void      GUI_SetLUTEntry (U8 Pos, GUI_COLOR Color);
void      GUI_SetLUTColor (U8 Pos, GUI_COLOR Color);
void      GUI_SetLUTColorEx(U8 Pos, LCD_COLOR Color, unsigned int LayerIndex);
U32       GUI_CalcColorDist (GUI_COLOR Color0, GUI_COLOR  Color1);
U32       GUI_CalcVisColorError(GUI_COLOR color);

/*********************************************************************
*
*       Logging (for debugging primarily)
*
**********************************************************************
*/
void GUI_Log      (const char *s);
void GUI_Log1     (const char *s, int p0);
void GUI_Log2     (const char *s, int p0, int p1);
void GUI_Log3     (const char *s, int p0, int p1, int p2);
void GUI_Log4     (const char *s, int p0, int p1, int p2,int p3);
void GUI_Warn     (const char *s);
void GUI_Warn1    (const char *s, int p0);
void GUI_Warn2    (const char *s, int p0, int p1);
void GUI_Warn3    (const char *s, int p0, int p1, int p2);
void GUI_Warn4    (const char *s, int p0, int p1, int p2, int p3);
void GUI_ErrorOut (const char *s);
void GUI_ErrorOut1(const char *s, int p0);
void GUI_ErrorOut2(const char *s, int p0, int p1);
void GUI_ErrorOut3(const char *s, int p0, int p1, int p2);
void GUI_ErrorOut4(const char *s, int p0, int p1, int p2, int p3);

/*********************************************************************
*
*             2d - GL
*
**********************************************************************
*/

int  GUI_BMP_Draw         (const void * pFileData, int x0, int y0);
int  GUI_BMP_GetXSize     (const void * pFileData);
int  GUI_BMP_GetYSize     (const void * pFileData);
void GUI_Clear            (void);
void GUI_ClearRect        (int x0, int y0, int x1, int y1);
void GUI_ClearRectEx      (const GUI_RECT* pRect);
void GUI_DrawArc          (int x0, int y0, int rx, int ry, int a0, int a1);
void GUI_DrawBitmap       (const GUI_BITMAP GUI_UNI_PTR * pBM, int x0, int y0);
void GUI_DrawBitmapMag    (const GUI_BITMAP GUI_UNI_PTR * pBM, int x0, int y0, int XMul, int YMul);
void GUI_DrawBitmapEx     (const GUI_BITMAP GUI_UNI_PTR * pBitmap, int x0, int y0, int xCenter, int yCenter, int xMag, int yMag);
void GUI_DrawBitmapExp    (int x0, int y0, int XSize, int YSize, int XMul,  int YMul, int BitsPerPixel, int BytesPerLine, const U8 GUI_UNI_PTR * pData, const GUI_LOGPALETTE GUI_UNI_PTR * pPal);
void GUI_DrawCircle       (int x0, int y0, int r);
void GUI_DrawEllipse      (int x0, int y0, int rx, int ry);
void GUI_DrawGraph        (I16 *pay, int NumPoints, int x0, int y0);
void GUI_DrawGraphEx      (I16 *pay, int NumPoints, int x0, int y0, int Numerator, int Denominator);
void GUI_DrawHLine        (int y0, int x0, int x1);
void GUI_DrawLine         (int x0, int y0, int x1, int y1);
void GUI_DrawLineRel      (int dx, int dy);
void GUI_DrawLineTo       (int x, int y);
void GUI_DrawPie          (int x0, int y0, int r, int a0, int a1, int Type);
void GUI_DrawPixel        (int x, int y);
void GUI_DrawPoint        (int x, int y);
void GUI_DrawPolygon      (const GUI_POINT* pPoints, int NumPoints, int x0, int y0);
void GUI_DrawPolyLine     (const GUI_POINT* pPoints, int NumPoints, int x0, int y0);
void GUI_DrawFocusRect    (const GUI_RECT *pRect, int Dist);
void GUI_DrawRect         (int x0, int y0, int x1, int y1);
void GUI_DrawRectEx       (const GUI_RECT *pRect);
void GUI_DrawVLine        (int x0, int y0, int y1);
void GUI_FillCircle       (int x0, int y0, int r);
void GUI_FillEllipse      (int x0, int y0, int rx, int ry);
void GUI_FillPolygon      (const GUI_POINT* pPoints, int NumPoints, int x0, int y0);
void GUI_FillRect         (int x0, int y0, int x1, int y1);
void GUI_FillRectEx       (const GUI_RECT* pRect);
void GUI_GetClientRect    (GUI_RECT* pRect);
int  GUI_GIF_Draw         (const void * pGIF, U32 NumBytes, int x0, int y0);
int  GUI_GIF_DrawEx       (const void * pGIF, U32 NumBytes, int x0, int y0, int Index);
int  GUI_GIF_GetComment   (const void * pGIF, U32 NumBytes, U8 * pBuffer, int MaxSize, int Index);
int  GUI_GIF_GetXSize     (const void * pGIF);
int  GUI_GIF_GetYSize     (const void * pGIF);
int  GUI_GIF_GetImageInfo (const void * pGIF, U32 NumBytes, GUI_GIF_IMAGE_INFO * pInfo, int Index);
int  GUI_GIF_GetInfo      (const void * pGIF, U32 NumBytes, GUI_GIF_INFO * pInfo);
void GUI_InvertRect       (int x0, int y0, int x1, int y1);
void GUI_MoveRel          (int dx, int dy);
void GUI_MoveTo           (int x, int y);

/*********************************************************************
*
*       JPEG support
*
**********************************************************************
*/
typedef struct {
  int XSize;
  int YSize;
} GUI_JPEG_INFO;

typedef int GUI_JPEG_GET_DATA_FUNC(void * p, int MaxNumBytes, const U8 ** ppData, unsigned StartOfFile);

int  GUI_JPEG_Draw        (const void * pFileData, int DataSize, int x0, int y0);
int  GUI_JPEG_DrawEx      (GUI_JPEG_GET_DATA_FUNC * fpGetData, void * p, int x0, int y0);
int  GUI_JPEG_DrawScaled  (const void * pFileData, int DataSize, int x0, int y0, int Num, int Denom);
int  GUI_JPEG_DrawScaledEx(GUI_JPEG_GET_DATA_FUNC * fpGetData, void * p, int x0, int y0, int Num, int Denom);
int  GUI_JPEG_GetInfo     (const void * pFileData, int DataSize, GUI_JPEG_INFO* pInfo);
int  GUI_JPEG_GetInfoEx   (GUI_JPEG_GET_DATA_FUNC * fpGetData, void * p, GUI_JPEG_INFO * pInfo);

/*********************************************************************
*
*              Cursor routines
*
**********************************************************************
*/

typedef struct {
  const GUI_UNI_PTR GUI_BITMAP * pBitmap;
  int xHot, yHot;
} GUI_CURSOR;

#if GUI_SUPPORT_CURSOR
  void               GUI_CURSOR_Activate   (void);
  void               GUI_CURSOR_Deactivate (void);
  int                GUI_CURSOR_GetState   (void);
  void               GUI_CURSOR_Hide       (void);
  void               GUI_CURSOR_SetXor     (const GUI_BITMAP * pBM, int x, int y);
  void               GUI_CURSOR_SetPosition(int x, int y);
  const GUI_CURSOR GUI_UNI_PTR * GUI_CURSOR_Select     (const GUI_CURSOR GUI_UNI_PTR * pCursor);
  void               GUI_CURSOR_Show       (void);
#else
  #define GUI_CURSOR_Show()
  #define GUI_CURSOR_Clear();
#endif

/*********************************************************************
*
*       Cursors and their bitmaps
*
**********************************************************************
*/
extern GUI_CONST_STORAGE GUI_CURSOR GUI_CursorArrowS,  GUI_CursorArrowSI;
extern GUI_CONST_STORAGE GUI_CURSOR GUI_CursorArrowM,  GUI_CursorArrowMI;
extern GUI_CONST_STORAGE GUI_CURSOR GUI_CursorArrowL,  GUI_CursorArrowLI;
extern GUI_CONST_STORAGE GUI_CURSOR GUI_CursorCrossS,  GUI_CursorCrossSI;