/**
 *
 * $Id: TextFP.h,v 1.3 2001/08/01 13:21:11 amai Exp $
 *
 * Copyright (C) 1995 Free Software Foundation, Inc.
 * Copyright (C) 1995-2001 LessTif Development Team
 *
 * This file is part of the GNU LessTif Library.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 **/

#ifndef _XM_TEXTFP_H
#define _XM_TEXTFP_H

#include <Xm/PrimitiveP.h>
#include <Xm/TextF.h>

#ifdef __cplusplus
extern "C" {
#endif

  
  typedef struct {
    Boolean Echo;               /* Echo characters to window? */
    Boolean AllowSelection;     /* Allow selections to be copied/pasted? */

      /* Stuff that will go away with the Clipboard routines */
    char *SelectionText;	/* pointer to text selection, when needed */
    int SelectionLen;		/* length */
    
    XmTextPosition OldHighlightStart;	/* save data */
    XmTextPosition OldHighlightEnd;
    XmTextPosition OldCursorPos;	/* previous position */
    int OldCursorX;		/* previous pixel pos of cursor */

    int FastInsertCursorStart;	/* data storage for some text optimization */
    int FastInsertTextLen;

    Dimension FontHeight;
    int XDraw;			/* x location of text drawing area */
    int YDraw;			/* y location of text drawing area */
    int XOffset;		/* offset from x=0 to start of text string */
    int OldXOffset;
    int YOffset;		/* y pixel offset to baseline of font */
    int TextWidth;		/* char width of text */
    int OldTextWidth;
  } XmTextFieldPartLesstifExtension;
    
  
  typedef struct {
    XtCallbackList activate_callback;	   /* Command activate callback */
    XtCallbackList focus_callback;  /* Verify losing focus callback */
    XtCallbackList losing_focus_callback;  /* Verify losing focus callback */
    XtCallbackList modify_verify_callback; /* Verify value to change callback */
    XtCallbackList wcs_modify_verify_callback; /* Verify value to change 
						* callback */
    XtCallbackList motion_verify_callback; /* Verify insert cursor position to
					      change callback */
    XtCallbackList gain_primary_callback; /* Gained ownership of Primary
                                             Selection */
    XtCallbackList lose_primary_callback; /* Lost ownership of Primary
                                             Selection */
    XtCallbackList value_changed_callback; /* Notify that value has change						      callback */
    char * value;		/* pointer to widget value stored as char* */
    wchar_t * wc_value;		/* pointer to widget value stored as wchar_t* */

    XmFontList font_list;	/* Uses only the font portion of fontlist */
    XFontStruct *font;	        /* font retrieved from the fontlist */
    XmTextScanType *selection_array; /* Description of what to cycle
					     through on selections */
    _XmHighlightData highlight;    /* Info on the highlighting regions. */

    GC gc;			/* Normal GC for drawing text and cursor */
    GC image_gc;		/* Image GC for drawing text cursor*/
    GC save_gc;                 /* GC for saving/restoring under IBeam */

    Pixmap ibeam_off;		/* pixmap for area under the IBeam */
    Pixmap add_mode_cursor;	/* The add mode cursor pixmap */
    Pixmap cursor;		/* The ibeam cursor stencil */
    Pixmap putback;		/* AVAILABLE: was in 1.1 but not really used */
    Pixmap stipple_tile;	/* The tile pattern for the stippled I-beam */
    Pixmap image_clip;		/* The clip rect needed for image gc */

    XmTextPosition cursor_position;/* CursorPos - text cursor position */
    XmTextPosition new_h_offset;/* Used in setvaluesalmost proc */
    XmTextPosition h_offset;  	/* The x position of the first character
                                   (relative to left edge of the widget) */
    XmTextPosition orig_left;     /* unused */
    XmTextPosition orig_right;    /* unused */
    XmTextPosition prim_pos_left; /* HighlightStart */
    XmTextPosition prim_pos_right; /* HighlightEnd */
    XmTextPosition prim_anchor;	/* HighlightPivot */

    XmTextPosition sec_pos_left; /* usused */
    XmTextPosition sec_pos_right; /* usused */
    XmTextPosition sec_anchor;	/* usused */

    XmTextPosition stuff_pos;	/* Position to stuff the primary selection */

    Position select_pos_x;    /* x position for timer-based scrolling */

    Time prim_time;             /* Timestamp of primary selection */
    Time dest_time;             /* Timestamp of destination selection */
    Time sec_time;              /* Timestamp of secondary selection */
    Time last_time;             /* Time of last selection event */

    XtIntervalId timer_id;	/* Blinking cursor timer */
    XtIntervalId select_id;     /* Timer based scrolling identifier */

    int blink_rate;		/* Rate of blinking text cursor in msec */
    int selection_array_count;  /* Selection array count */
    int threshold;		/* Selection threshold */
    int size_allocd;		/* Size allocated for value string */
    int string_length;          /* The number of characters in the string 
				   (including the trailing NULL) */
    int cursor_height;		/* Save cursor dimensions */
    int cursor_width;		/* Save cursor dimensions */
    int sarray_index;		/* Index into selection array */
    int max_length;		/* Maximum number of character that can be
				   inserted into the text field widget */

    int max_char_size;          /* Max bytes per character in cur locale */
    short columns;		/* The number of characters in the width */

    Dimension margin_width;	/* Height between text borders and text */
    Dimension margin_height;	/* Width between text borders and text */
    Dimension average_char_width;/* Average character width based on font */
    Dimension margin_top;   /* Height between text borders and top of text */
    Dimension margin_bottom;/* Height between text borders and bottom of text */
    Dimension font_ascent;  /* Ascent of font or fontset used by widget */
    Dimension font_descent;  /* Descent of font or fontset used by widget */

    Boolean resize_width;	/* Allows the widget to grow horizontally
				   when borders are reached */
    Boolean pending_delete;	/* Delete primary selection on insert when
				   set to True */
    Boolean editable;		/* Sets editablility of text */
    Boolean verify_bell;          /* Determines if bell is sounded when verify
                                   *  callback returns doit - False
                                   */
    Boolean cursor_position_visible;	/* Sets visibility of insert cursor */

    Boolean traversed;          /* Flag used with losing focus verification to
                                   indicate a traversal key pressed event */
    Boolean add_mode;		/* Add mode for cursor movement */
    Boolean has_focus;		/* Flag that indicates whether the widget
			           has input focus */
    Boolean blink_on;		/* State of Blinking insert cursor */
    short int cursor_on;	/* Indicates whether the cursor is visible */
    Boolean refresh_ibeam_off;	/* Indicates whether the area under IBeam needs
				   to be re-captured */
    Boolean have_inverted_image_gc;  /* fg/bg of image gc have been swapped */
    Boolean has_primary;	/* Indicates that is has the
				   primary selection */
    Boolean has_secondary;	/* Indicates that is has the
				   secondary selection */
    Boolean has_destination;	/* Indicates that is has the
				   destination selection */
    Boolean sec_drag;           /* Indicates a secondary drag was made */ 
    Boolean selection_move;	/* Indicates that the action requires a
				   secondary move (i.e. copy & cut) */
    Boolean pending_off;	/* indicates pending delete state */
    Boolean fontlist_created;   /* Indicates that the text field widget created
				   it's own fontlist */
    Boolean has_rect;		/* currently has clipping rectangle */
    Boolean do_drop;		/* Indicates that the widget the recieved the
				   button release, did not have a previous
                                   button press, so it is o.k. to request
				   the MOTIF_DROP selection. */
    Boolean cancel;		/* Cancels selection actions when true */
    Boolean extending;		/* Indicates extending primary selection */
    Boolean sec_extending;      /* Indicates extending secondary selection */
    Boolean changed_visible;    /* Indicates whether the dest_visible flag
                                   is in a temporary changed state */
    Boolean have_fontset;       /* The widgets font is a fontset, not a 
				 * fontstruct... use R5 draw routines */
    Boolean in_setvalues;	/* used to disable unnecessary redisplays */
    Boolean do_resize;		/* used to prevent inappropriate resizes */
    Boolean redisplay;		/* used to set redisplay flag in setvalues */
    Boolean overstrike;		/* overstrike mode for character input */
    Boolean sel_start;		/* overstrike mode for character input */
    XtPointer extension;	/* Pointer to extension record. */

#ifdef BIDI
/* BIDI: Add the following for bi-directional text support */
    XmTextMode text_mode;       /* mode is VISUAL, IMPLICIT */
    XmCsdMode  csd_mode;        /* csd is AUTO,INITIAL,MIDDLE,FINAL, etc.*/
    XmNssMode  nss_mode;        /* nss is BILINGUAL,ARABIC.HINDU or PASSTHR */
    Boolean symmetric_swap;     /* should we perform symmetric swapping? */
    Boolean expand_tail;        /* should we expand the tail for seen family */
    Boolean word_break;
    Boolean text_compose;       /* composed tashkeel over letter */
/* end BIDI */
#endif
  } XmTextFieldPart;

/* Define the full instance record */
  typedef struct _XmTextFieldRec {
    CorePart core;
    XmPrimitivePart primitive;
    XmTextFieldPart text;
  } XmTextFieldRec;

/* Define class part structure */
  typedef struct {
    XtPointer extension;
  } XmTextFieldClassPart;

/* Define the full class record */
  typedef struct _XmTextFieldClassRec {
    CoreClassPart core_class;
    XmPrimitiveClassPart primitive_class;
    XmTextFieldClassPart textfield_class;
  } XmTextFieldClassRec;

/* External definition for class record */

  extern XmTextFieldClassRec xmTextFieldClassRec;

#define TF_ALLOC_SIZE 256

#define TextF__(w) ((XmTextFieldWidget)(w))->text
#define TextF__E__(w) ((XmTextFieldPartLesstifExtension *) (((XmTextFieldWidget)(w))->text.extension))
  
#define TextF_Alloc(w) (TextF__(w).size_allocd)
#define TextF_BlinkRate(w) (TextF__(w).blink_rate)
#define TextF_BlinkOn(w) (TextF__(w).blink_on)
#define TextF_Columns(w) (TextF__(w).columns)
#define TextF_CursorPos(w) (TextF__(w).cursor_position)
#define TextF_CursorPositionVisible(w) (TextF__(w).cursor_position_visible)
#define TextF_Editable(w) (TextF__(w).editable)
#define TextF_Font(w) (TextF__(w).font)
#define TextF_FontList(w) (TextF__(w).font_list)
#define TextF_FontListCreated(w) (TextF__(w).fontlist_created)
#define TextF_HasFocus(w) (TextF__(w).has_focus)
#define TextF_HighlightStart(w) (TextF__(w).prim_pos_left)
#define TextF_HighlightEnd(w) (TextF__(w).prim_pos_right)
#define TextF_HighlightPivot(w) (TextF__(w).prim_anchor)
#define TextF_SecondaryStart(w) (TextF__(w).sec_pos_left)
#define TextF_SecondaryEnd(w) (TextF__(w).sec_pos_right)
#define TextF_SecondaryPivot(w) (TextF__(w).sec_anchor)
#define TextF_MarginHeight(w) (TextF__(w).margin_height)
#define TextF_MarginWidth(w) (TextF__(w).margin_width)
#define TextF_MaxLength(w) (TextF__(w).max_length)
#define TextF_Length(w) (TextF__(w).string_length)
#define TextF_PendingDelete(w) (TextF__(w).pending_delete)
#define TextF_ResizeWidth(w) (TextF__(w).resize_width)
#define TextF_SelectId(w) (TextF__(w).select_id)
#define TextF_SelectionArray(w) (TextF__(w).selection_array)
#define TextF_SelectionArrayCount(w) (TextF__(w).selection_array_count)
#define TextF_SelectThreshold(w) (TextF__(w).select_threshold)
#define TextF_TimerId(w) (TextF__(w).timer_id)
#define TextF_Value(w) (TextF__(w).value)
#define TextF_ValueWcs(w) (TextF__(w).wc_value)
#define TextF_VerifyBell(w) (TextF__(w).verify_bell)
#define TextF_ViewHeight(w) (TextF__(w).margin_top)
#define TextF_ViewWidth(w) (TextF__(w).margin_bottom)

#define TextF_HighlightMode(w) (TextF__(w).highlight.list->mode)


    /* Lesstif Extensions */
#define TextF_XOffset(w) (TextF__E__(w)->XOffset)
#define TextF_YOffset(w) (TextF__E__(w)->YOffset)
#define TextF_OldXOffset(w) (TextF__E__(w)->OldXOffset)
#define TextF_OldCursorPos(w) (TextF__E__(w)->OldCursorPos)
#define TextF_OldCursorX(w) (TextF__E__(w)->OldCursorX)
#define TextF_Echo(w) (TextF__E__(w)->Echo)
#define TextF_AllowSelection(w) (TextF__E__(w)->AllowSelection)
#define TextF_SelectionText(w) (TextF__E__(w)->SelectionText)
#define TextF_SelectionLen(w) (TextF__E__(w)->SelectionLen)
#define TextF_OldHighlightStart(w) (TextF__E__(w)->OldHighlightStart)
#define TextF_OldHighlightEnd(w) (TextF__E__(w)->OldHighlightEnd)
#define TextF_FastInsertCursorStart(w) (TextF__E__(w)->FastInsertCursorStart)
#define TextF_FastInsertTextLen(w) (TextF__E__(w)->FastInsertTextLen)
#define TextF_FontHeight(w) (TextF__E__(w)->FontHeight)
#define TextF_XDraw(w) (TextF__E__(w)->XDraw)
#define TextF_YDraw(w) (TextF__E__(w)->YDraw)
#define TextF_TextWidth(w) (TextF__E__(w)->TextWidth)
#define TextF_OldTextWidth(w) (TextF__E__(w)->OldTextWidth)

  
#define TextF_ActivateCallback(w) (TextF__(w).activate_callback)
#define TextF_FocusCallback(w) (TextF__(w).focus_callback)
#define TextF_LosingFocusCallback(w) (TextF__(w).losing_focus_callback)
#define TextF_ModifyVerifyCallback(w) (TextF__(w).modify_verify_callback)
#define TextF_WcsModifyVerifyCallback(w) (TextF__(w).wcs_modify_verify_callback)
#define TextF_MotionVerifyCallback(w) (TextF__(w).motion_verify_callback)
#define TextF_GainPrimaryCallback(w) (TextF__(w).gain_primary_callback)
#define TextF_LosePrimaryCallback(w) (TextF__(w).lose_primary_callback)
#define TextF_ValueChangedCallback(w) (TextF__(w).value_changed_callback)

    /* GC stuff */  
#define TextF_DrawGC(w) (TextF__(w).gc)            /* drawing and copying */
#define TextF_DrawGCInverted(w) (TextF__(w).have_inverted_image_gc)
#define TextF_CursorGC(w) (TextF__(w).image_gc) /* highlighting text */
#define TextF_CopyGC(w) (TextF__(w).save_gc)     /* cursor (not clipped) */
#define TextF_CursorSave(w) (TextF__(w).ibeam_off)
#define TextF_CursorSaveValid(w) (TextF__(w).refresh_ibeam_off)
#define TextF_CursorIBeam(w) (TextF__(w).cursor)
#define TextF_CursorAddMode(w) (TextF__(w).add_mode_cursor)
#define TextF_CursorStipple(w) (TextF__(w).stipple_tile)

    /* Font functions */
#define TextF_FontTextWidth(w,s,l) (int)XTextWidth(TextF__(w).font, s, l)
#define TextF_FontAverageWidth(w) (TextF__(w).average_char_width)
#define TextF_FontAscent(w) (TextF__(w).font->max_bounds.ascent)
#define TextF_FontDescent(w) (TextF__(w).font->max_bounds.descent)

#ifdef __cplusplus
}
#endif

#endif /* _XM_TEXTFP_H */
