TextP.h

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/*
* $XConsortium: TextP.h,v 1.54 95/06/14 15:07:27 kaleb Exp $
*/


/***********************************************************

Copyright (c) 1987, 1988, 1994  X Consortium

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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Except as contained in this notice, the name of the X Consortium shall not be
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in this Software without prior written authorization from the X Consortium.


Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its 
documentation for any purpose and without fee is hereby granted, 
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in 
supporting documentation, and that the name of Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.  

DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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SOFTWARE.

******************************************************************/

#ifndef _XawTextP_h
#define _XawTextP_h

#include <X11/Xaw3d/Text.h>
#include <X11/Xaw3d/SimpleP.h>

/****************************************************************
 *
 * Text widget private
 *
 ****************************************************************/
#define MAXCUT  30000   /* Maximum number of characters that can be cut. */

#define GETLASTPOS  XawTextSourceScan(ctx->text.source, 0, \
                                      XawstAll, XawsdRight, 1, TRUE)

#define zeroPosition ((XawTextPosition) 0)

extern XtActionsRec _XawTextActionsTable[];
extern Cardinal _XawTextActionsTableCount;

#define XawLF   0x0a
#define XawCR   0x0d
#define XawTAB  0x09
#define XawBS   0x08
#define XawSP   0x20
#define XawDEL  0x7f
#define XawESC  0x1b
#define XawBSLASH '\\'

/* constants that subclasses may want to know */
#define DEFAULT_TEXT_HEIGHT ((Dimension)~0)

/* displayable text management data structures */

typedef struct {
  XawTextPosition position;
  Position y;
  Dimension textWidth;
} XawTextLineTableEntry, *XawTextLineTableEntryPtr;

typedef struct {
    XawTextPosition   left, right;
    XawTextSelectType type;
    Atom*            selections;
    int              atom_count;
    int              array_size;
} XawTextSelection;

typedef struct _XawTextSelectionSalt {
    struct _XawTextSelectionSalt    *next;
    XawTextSelection    s;
    /* 
     * The element "contents" stores the CT string which is gotten in the
     * function _XawTextSaltAwaySelection().
    */ 
    char                *contents;
    int                 length;
} XawTextSelectionSalt;

/* Line Tables are n+1 long - last position displayed is in last lt entry */
typedef struct {
  XawTextPosition        top;   /* Top of the displayed text.           */
  int                    lines; /* How many lines in this table.        */
  XawTextLineTableEntry *info;  /* A dynamic array, one entry per line  */
} XawTextLineTable, *XawTextLineTablePtr;


typedef struct _XawTextMargin {
  Position left, right, top, bottom;
} XawTextMargin;

#define VMargins(ctx) ( (ctx)->text.margin.top + (ctx)->text.margin.bottom )
#define HMargins(ctx) ( (ctx)->text.margin.left + (ctx)->text.margin.right )

#define IsPositionVisible(ctx, pos) \
                (pos >= ctx->text.lt.info[0].position && \
                 pos < ctx->text.lt.info[ctx->text.lt.lines].position)

/*
 * Search & Replace data structure.
 */

struct SearchAndReplace {
  Boolean selection_changed;    /* flag so that the selection cannot be
                                   changed out from underneath query-replace.*/
  Widget search_popup;          /* The poppup widget that allows searches.*/
  Widget label1;                /* The label widgets for the search window. */
  Widget label2;
  Widget left_toggle;           /* The left search toggle radioGroup. */
  Widget right_toggle;          /* The right search toggle radioGroup. */
  Widget rep_label;             /* The Replace label string. */
  Widget rep_text;              /* The Replace text field. */
  Widget search_text;           /* The Search text field. */
  Widget rep_one;               /* The Replace one button. */
  Widget rep_all;               /* The Replace all button. */
};
    
/* Private Text Definitions */

typedef int (*ActionProc)();

/* New fields for the Text widget class record */

typedef struct {int empty;} TextClassPart;

struct text_move {
    int h, v;
    struct text_move * next;
};

/* Full class record declaration */
typedef struct _TextClassRec {
    CoreClassPart       core_class;
    SimpleClassPart     simple_class;
    TextClassPart       text_class;
} TextClassRec;

extern TextClassRec textClassRec;

/* New fields for the Text widget record */
typedef struct _TextPart {
    /* resources */

    Widget              source, sink;
    XawTextPosition     insertPos;
    XawTextSelection    s;
    XawTextSelectType   *sarray;           /* Array to cycle for selections. */
    XawTextSelectionSalt    *salt;           /* salted away selections */
    int                 options;             /* wordbreak, scroll, etc. */
    int                 dialog_horiz_offset; /* position for popup dialog */
    int                 dialog_vert_offset;  /* position for popup dialog */
    Boolean             display_caret;       /* insertion pt visible iff T */
    Boolean             auto_fill;           /* Auto fill mode? */
    XawTextScrollMode   scroll_vert, scroll_horiz; /*what type of scrollbars.*/
    XawTextWrapMode     wrap;            /* The type of wrapping. */
    XawTextResizeMode   resize;              /* what to resize */
    XawTextMargin       r_margin;            /* The real margins. */
    XtCallbackList      unrealize_callbacks; /* used for scrollbars */
    
    /* private state */

    XawTextMargin       margin;            /* The current margins. */
    XawTextLineTable    lt;
    XawTextScanDirection extendDir;
    XawTextSelection    origSel;    /* the selection being modified */
    Time            lasttime;       /* timestamp of last processed action */
    Time            time;           /* time of last key or button action */ 
    Position        ev_x, ev_y;     /* x, y coords for key or button action */
    Widget          vbar, hbar;     /* The scroll bars (none = NULL). */
    struct SearchAndReplace * search;/* Search and replace structure. */
    Widget          file_insert;    /* The file insert popup widget. */
    XawTextPosition  *updateFrom;   /* Array of start positions for update. */
    XawTextPosition  *updateTo;     /* Array of end positions for update. */
    int             numranges;      /* How many update ranges there are. */
    int             maxranges;      /* How many ranges we have space for */
    XawTextPosition  lastPos;       /* Last position of source. */
    GC              gc;
    Boolean         showposition;   /* True if we need to show the position. */
    Boolean         hasfocus;       /* TRUE if we currently have input focus.*/
    Boolean         update_disabled; /* TRUE if display updating turned off */
    Boolean         single_char;    /* Single character replaced. */
    XawTextPosition  old_insert;    /* Last insertPos for batched updates */
    short           mult;           /* Multiplier. */
    struct text_move * copy_area_offsets; /* Text offset area (linked list) */

    /* private state, shared w/Source and Sink */
    Boolean         redisplay_needed; /* in SetValues */
    XawTextSelectionSalt    *salt2;          /* salted away selections */
} TextPart;

/*************************************************************
 *
 * Resource types private to Text widget.
 *
 *************************************************************/

#define XtRScrollMode "ScrollMode"
#define XtRWrapMode "WrapMode"
#define XtRResizeMode "ResizeMode"

/****************************************************************
 *
 * Full instance record declaration
 *
 ****************************************************************/

typedef struct _TextRec {
    CorePart    core;
    SimplePart  simple;
    TextPart    text;
} TextRec;

/********************************************
 *
 * Semi-private functions
 * for use by other Xaw modules only
 *
 *******************************************/

extern void _XawTextBuildLineTable (
#if NeedFunctionPrototypes
    TextWidget /*ctx*/, 
    XawTextPosition /*top pos*/, 
    _XtBoolean /* force_rebuild */
#endif
);

extern char* _XawTextGetSTRING(
#if NeedFunctionPrototypes
    TextWidget /*ctx*/, 
    XawTextPosition /*left*/, 
    XawTextPosition /*right*/
#endif
); 

extern void _XawTextSaltAwaySelection(
#if NeedFunctionPrototypes
    TextWidget /*ctx*/, 
    Atom* /*selections*/, 
    int /*num_atoms*/
#endif
); 

extern void _XawTextPosToXY(
#if NeedFunctionPrototypes
    Widget                      /* w */,
    XawTextPosition             /* pos */,
    Position *                  /* x */,
    Position *                  /*y */
#endif
);

#endif /* _XawTextP_h */

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