#ifndef TEXTDISPLAY_H
#define TEXTDISPLAY_H

/*********************************************************
**                                                      **
**      TextDisplay MUI Class                           **
**                                                      **
**              ©1998-1999 Simone Tellini               **
**                                                      **
*********************************************************/


/// Support stuff
#ifndef REG
#ifdef _DCC
#define REG(x) __ ## x
#else
#define REG(x) register __ ## x
#endif
#endif

#ifndef ASM
#if defined __MAXON__ || defined __STORM__ || defined _DCC
#define ASM
#else
#define ASM __asm
#endif
#endif

#ifndef SAVEDS
#ifdef __MAXON__
#define SAVEDS
#endif
#if defined __STORM__ || defined __SASC
#define SAVEDS __saveds
#endif
#if defined _GCC || defined _DCC
#define SAVEDS __geta4
#endif
#endif


#ifndef MAKE_ID
#define MAKE_ID(a,b,c,d)    ((ULONG) (a)<<24 | (ULONG) (b)<<16 | (ULONG) (c)<<8 | (ULONG) (d))
#endif

#ifndef TAGBASE
#define TAGBASE ( TAG_USER | 0x776B0000 )
#endif

#ifndef MIN
#define MIN(a,b)    (( a < b ) ? ( a ) : ( b ))
#endif

#ifndef MAX
#define MAX(a,b)    (( a > b ) ? ( a ) : ( b ))
#endif

#ifndef ABS
#define ABS(a) (((a) > 0) ? (a) : -(a))
#endif
///
/// Externs
ULONG SAVEDS ASM    TextDisplay_Dispatcher( REG( a0 ) struct IClass *, REG( a2 ) Object *, REG( a1 ) Msg );
ULONG SAVEDS ASM    TextDisplayScroll_Dispatcher( REG( a0 ) struct IClass *, REG( a2 ) Object *, REG( a1 ) Msg );

extern struct MUI_CustomClass  *CL_TextDisplay;
extern struct MUI_CustomClass  *CL_TextDisplayScroll;
///

#define TextDisplayObject   NewObject( CL_TextDisplayScroll->mcc_Class, 0

/*************************
**      Methods         **
*************************/

#define MUIM_TextDisplay_LoadFile       (TAGBASE + 1)
#define MUIM_TextDisplay_Flush          (TAGBASE + 2)
#define MUIM_TextDisplay_Scroll         (TAGBASE + 3)
#define MUIM_TextDisplay_CopyToClip     (TAGBASE + 4)
#define MUIM_TextDisplay_SetMark        (TAGBASE + 5)
#define MUIM_TextDisplay_RedrawLine     (TAGBASE + 6)

/*************************
**      Attributes      **
*************************/

#define MUIA_TextDisplay_Scroller       (TAGBASE + 1)   /*  PRIVATE     i...  Object *              */
#define MUIA_TextDisplay_FirstLine      (TAGBASE + 2)   /*              .sgn  ULONG                 */
#define MUIA_TextDisplay_NumLines       (TAGBASE + 3)   /*              ..g.  ULONG                 */
#define MUIA_TextDisplay_Size           (TAGBASE + 4)   /*              ..g.  ULONG                 */
#define MUIA_TextDisplay_Lines          (TAGBASE + 5)   /*              ..g.  struct MinList *      */
#define MUIA_TextDisplay_TextPen        (TAGBASE + 6)   /*              isg.  APTR                  */
#define MUIA_TextDisplay_BackPen        (TAGBASE + 7)   /*              isg.  APTR                  */
#define MUIA_TextDisplay_MarkPen        (TAGBASE + 8)   /*              isg.  APTR                  */
#define MUIA_TextDisplay_ClipUnit       (TAGBASE + 9)   /*              isg.  UBYTE                 */
#define MUIA_TextDisplay_AutoCopy       (TAGBASE + 10)  /*              isg.  BOOL                  */
#define MUIA_TextDisplay_HideMark       (TAGBASE + 11)  /*              isg.  BOOL                  */
#define MUIA_TextDisplay_Contents       (TAGBASE + 12)  /*              .sg.  STRPTR                */
#define MUIA_TextDisplay_UseWinBorder   (TAGBASE + 13)  /*              i...  BOOL                  */
#define MUIA_TextDisplay_TabSize        (TAGBASE + 14)  /*              i.g.  UWORD                 */

/*************************
**      Values          **
*************************/

#define MUIV_TextDisplay_Scroll_PageDown    -1
#define MUIV_TextDisplay_Scroll_PageUp      -2
#define MUIV_TextDisplay_Scroll_Top         0
#define MUIV_TextDisplay_Scroll_Bottom      -3


/*************************
**      Structures      **
*************************/

struct TextDisplayScrollData {
        Object     *Display;
};

struct DispLine {
        STRPTR      Line;
        ULONG       Length;
};

#define CHUNK_SIZE      100

struct LinesChunk {
        struct LinesChunk  *Succ;
        struct LinesChunk  *Pred;
        struct DispLine     Lines[ CHUNK_SIZE ];
};

struct TextDisplayData {
        Object             *Scroller;
        struct IClass      *Notify;
        UBYTE              *Buffer;
        ULONG               Size;
        APTR                Pool;
        struct MinList      Lines;
        ULONG               NumLines;
        ULONG               DisplayedLines;
        ULONG               First;          // first line showed
        ULONG               Flags;
        ULONG               XOffset;
        ULONG               YOffset;
        ULONG               StartX;
        LONG                Direction;      // for scrolling
        ULONG               OldWidth;
        UBYTE               TextPen;
        UBYTE               BackPen;
        UBYTE               MarkPen;
        UBYTE               Clipboard;      // clipboard unit
        UWORD               TabSize;
        APTR                TextPenSpec;
        APTR                BackPenSpec;
        APTR                MarkPenSpec;
        ULONG               MarkLineStart;
        ULONG               MarkLineEnd;
        UWORD               MarkColStart;
        UWORD               MarkColEnd;
        ULONG               RedrawLine;
};

#define TD_GO_UP        (1 << 0)
#define TD_GO_DOWN      (1 << 1)
#define TD_WORDWRAP     (1 << 2)
#define TD_MARK         (1 << 3)
#define TD_MARKED       (1 << 4)
#define TD_REDRAWLINE   (1 << 5)
#define TD_CLEARMARK    (1 << 6)
#define TD_AUTOCOPY     (1 << 7)
#define TD_HIDEMARK     (1 << 8)
#define TD_DONTFREE     (1 << 9)
#define TD_NEWTEXTPEN   (1 << 10)
#define TD_NEWBACKPEN   (1 << 11)
#define TD_NEWMARKPEN   (1 << 12)
#define TD_DISPOSING    (1 << 13)

#define TD_PREFSMASK    ( TD_AUTOCOPY | TD_HIDEMARK )

struct MUIP_TextDisplay_LoadFile {
        ULONG       MethodID;
        STRPTR      FileName;
};

struct MUIP_TextDisplay_Scroll {
        ULONG       MethodID;
        ULONG       FirstLine;
};

struct MUIP_TextDisplay_RedrawLine {
        ULONG       MethodID;
        ULONG       Line;
};

struct MUIP_TextDisplay_SetMark {
        ULONG       MethodID;
        ULONG       LineStart;
        ULONG       LineEnd;
        ULONG       ColStart;
        ULONG       ColEnd;
};


#endif  /* TEXTDISPLAY_H */