/[dtapublic]/projs/dtats/trunk/shared_source/c_tk_base_7_5_w_mods/tktext.h
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revision 69 by dashley, Sat Nov 5 10:54:17 2016 UTC revision 71 by dashley, Sat Nov 5 11:07:06 2016 UTC
# Line 1  Line 1 
1  /* $Header$ */  /* $Header$ */
2    
3  /*  /*
4   * tkText.h --   * tkText.h --
5   *   *
6   *      Declarations shared among the files that implement text   *      Declarations shared among the files that implement text
7   *      widgets.   *      widgets.
8   *   *
9   * Copyright (c) 1992-1994 The Regents of the University of California.   * Copyright (c) 1992-1994 The Regents of the University of California.
10   * Copyright (c) 1994-1995 Sun Microsystems, Inc.   * Copyright (c) 1994-1995 Sun Microsystems, Inc.
11   *   *
12   * See the file "license.terms" for information on usage and redistribution   * See the file "license.terms" for information on usage and redistribution
13   * of this file, and for a DISCLAIMER OF ALL WARRANTIES.   * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
14   *   *
15   * RCS: @(#) $Id: tktext.h,v 1.1.1.1 2001/06/13 05:08:53 dtashley Exp $   * RCS: @(#) $Id: tktext.h,v 1.1.1.1 2001/06/13 05:08:53 dtashley Exp $
16   */   */
17    
18  #ifndef _TKTEXT  #ifndef _TKTEXT
19  #define _TKTEXT  #define _TKTEXT
20    
21  #ifndef _TK  #ifndef _TK
22  #include "tk.h"  #include "tk.h"
23  #endif  #endif
24    
25  #ifdef BUILD_tk  #ifdef BUILD_tk
26  # undef TCL_STORAGE_CLASS  # undef TCL_STORAGE_CLASS
27  # define TCL_STORAGE_CLASS DLLEXPORT  # define TCL_STORAGE_CLASS DLLEXPORT
28  #endif  #endif
29    
30  /*  /*
31   * Opaque types for structures whose guts are only needed by a single   * Opaque types for structures whose guts are only needed by a single
32   * file:   * file:
33   */   */
34    
35  typedef struct TkTextBTree *TkTextBTree;  typedef struct TkTextBTree *TkTextBTree;
36    
37  /*  /*
38   * The data structure below defines a single line of text (from newline   * The data structure below defines a single line of text (from newline
39   * to newline, not necessarily what appears on one line of the screen).   * to newline, not necessarily what appears on one line of the screen).
40   */   */
41    
42  typedef struct TkTextLine {  typedef struct TkTextLine {
43      struct Node *parentPtr;             /* Pointer to parent node containing      struct Node *parentPtr;             /* Pointer to parent node containing
44                                           * line. */                                           * line. */
45      struct TkTextLine *nextPtr;         /* Next in linked list of lines with      struct TkTextLine *nextPtr;         /* Next in linked list of lines with
46                                           * same parent node in B-tree.  NULL                                           * same parent node in B-tree.  NULL
47                                           * means end of list. */                                           * means end of list. */
48      struct TkTextSegment *segPtr;       /* First in ordered list of segments      struct TkTextSegment *segPtr;       /* First in ordered list of segments
49                                           * that make up the line. */                                           * that make up the line. */
50  } TkTextLine;  } TkTextLine;
51    
52  /*  /*
53   * -----------------------------------------------------------------------   * -----------------------------------------------------------------------
54   * Segments: each line is divided into one or more segments, where each   * Segments: each line is divided into one or more segments, where each
55   * segment is one of several things, such as a group of characters, a   * segment is one of several things, such as a group of characters, a
56   * tag toggle, a mark, or an embedded widget.  Each segment starts with   * tag toggle, a mark, or an embedded widget.  Each segment starts with
57   * a standard header followed by a body that varies from type to type.   * a standard header followed by a body that varies from type to type.
58   * -----------------------------------------------------------------------   * -----------------------------------------------------------------------
59   */   */
60    
61  /*  /*
62   * The data structure below defines the body of a segment that represents   * The data structure below defines the body of a segment that represents
63   * a tag toggle.  There is one of these structures at both the beginning   * a tag toggle.  There is one of these structures at both the beginning
64   * and end of each tagged range.   * and end of each tagged range.
65   */   */
66    
67  typedef struct TkTextToggle {  typedef struct TkTextToggle {
68      struct TkTextTag *tagPtr;           /* Tag that starts or ends here. */      struct TkTextTag *tagPtr;           /* Tag that starts or ends here. */
69      int inNodeCounts;                   /* 1 means this toggle has been      int inNodeCounts;                   /* 1 means this toggle has been
70                                           * accounted for in node toggle                                           * accounted for in node toggle
71                                           * counts; 0 means it hasn't, yet. */                                           * counts; 0 means it hasn't, yet. */
72  } TkTextToggle;  } TkTextToggle;
73    
74  /*  /*
75   * The data structure below defines line segments that represent   * The data structure below defines line segments that represent
76   * marks.  There is one of these for each mark in the text.   * marks.  There is one of these for each mark in the text.
77   */   */
78    
79  typedef struct TkTextMark {  typedef struct TkTextMark {
80      struct TkText *textPtr;             /* Overall information about text      struct TkText *textPtr;             /* Overall information about text
81                                           * widget. */                                           * widget. */
82      TkTextLine *linePtr;                /* Line structure that contains the      TkTextLine *linePtr;                /* Line structure that contains the
83                                           * segment. */                                           * segment. */
84      Tcl_HashEntry *hPtr;                /* Pointer to hash table entry for mark      Tcl_HashEntry *hPtr;                /* Pointer to hash table entry for mark
85                                           * (in textPtr->markTable). */                                           * (in textPtr->markTable). */
86  } TkTextMark;  } TkTextMark;
87    
88  /*  /*
89   * A structure of the following type holds information for each window   * A structure of the following type holds information for each window
90   * embedded in a text widget.  This information is only used by the   * embedded in a text widget.  This information is only used by the
91   * file tkTextWind.c   * file tkTextWind.c
92   */   */
93    
94  typedef struct TkTextEmbWindow {  typedef struct TkTextEmbWindow {
95      struct TkText *textPtr;             /* Information about the overall text      struct TkText *textPtr;             /* Information about the overall text
96                                           * widget. */                                           * widget. */
97      TkTextLine *linePtr;                /* Line structure that contains this      TkTextLine *linePtr;                /* Line structure that contains this
98                                           * window. */                                           * window. */
99      Tk_Window tkwin;                    /* Window for this segment.  NULL      Tk_Window tkwin;                    /* Window for this segment.  NULL
100                                           * means that the window hasn't                                           * means that the window hasn't
101                                           * been created yet. */                                           * been created yet. */
102      char *create;                       /* Script to create window on-demand.      char *create;                       /* Script to create window on-demand.
103                                           * NULL means no such script.                                           * NULL means no such script.
104                                           * Malloc-ed. */                                           * Malloc-ed. */
105      int align;                          /* How to align window in vertical      int align;                          /* How to align window in vertical
106                                           * space.  See definitions in                                           * space.  See definitions in
107                                           * tkTextWind.c. */                                           * tkTextWind.c. */
108      int padX, padY;                     /* Padding to leave around each side      int padX, padY;                     /* Padding to leave around each side
109                                           * of window, in pixels. */                                           * of window, in pixels. */
110      int stretch;                        /* Should window stretch to fill      int stretch;                        /* Should window stretch to fill
111                                           * vertical space of line (except for                                           * vertical space of line (except for
112                                           * pady)?  0 or 1. */                                           * pady)?  0 or 1. */
113      int chunkCount;                     /* Number of display chunks that      int chunkCount;                     /* Number of display chunks that
114                                           * refer to this window. */                                           * refer to this window. */
115      int displayed;                      /* Non-zero means that the window      int displayed;                      /* Non-zero means that the window
116                                           * has been displayed on the screen                                           * has been displayed on the screen
117                                           * recently. */                                           * recently. */
118  } TkTextEmbWindow;  } TkTextEmbWindow;
119    
120  /*  /*
121   * A structure of the following type holds information for each image   * A structure of the following type holds information for each image
122   * embedded in a text widget.  This information is only used by the   * embedded in a text widget.  This information is only used by the
123   * file tkTextImage.c   * file tkTextImage.c
124   */   */
125    
126  typedef struct TkTextEmbImage {  typedef struct TkTextEmbImage {
127      struct TkText *textPtr;             /* Information about the overall text      struct TkText *textPtr;             /* Information about the overall text
128                                           * widget. */                                           * widget. */
129      TkTextLine *linePtr;                /* Line structure that contains this      TkTextLine *linePtr;                /* Line structure that contains this
130                                           * image. */                                           * image. */
131      char *imageString;                  /* Name of the image for this segment */      char *imageString;                  /* Name of the image for this segment */
132      char *imageName;                    /* Name used by text widget to identify      char *imageName;                    /* Name used by text widget to identify
133                                           * this image.  May be unique-ified */                                           * this image.  May be unique-ified */
134      char *name;                         /* Name used in the hash table.      char *name;                         /* Name used in the hash table.
135                                           * used by "image names" to identify                                           * used by "image names" to identify
136                                           * this instance of the image */                                           * this instance of the image */
137      Tk_Image image;                     /* Image for this segment.  NULL      Tk_Image image;                     /* Image for this segment.  NULL
138                                           * means that the image hasn't                                           * means that the image hasn't
139                                           * been created yet. */                                           * been created yet. */
140      int align;                          /* How to align image in vertical      int align;                          /* How to align image in vertical
141                                           * space.  See definitions in                                           * space.  See definitions in
142                                           * tkTextImage.c. */                                           * tkTextImage.c. */
143      int padX, padY;                     /* Padding to leave around each side      int padX, padY;                     /* Padding to leave around each side
144                                           * of image, in pixels. */                                           * of image, in pixels. */
145      int chunkCount;                     /* Number of display chunks that      int chunkCount;                     /* Number of display chunks that
146                                           * refer to this image. */                                           * refer to this image. */
147  } TkTextEmbImage;  } TkTextEmbImage;
148    
149  /*  /*
150   * The data structure below defines line segments.   * The data structure below defines line segments.
151   */   */
152    
153  typedef struct TkTextSegment {  typedef struct TkTextSegment {
154      struct Tk_SegType *typePtr;         /* Pointer to record describing      struct Tk_SegType *typePtr;         /* Pointer to record describing
155                                           * segment's type. */                                           * segment's type. */
156      struct TkTextSegment *nextPtr;      /* Next in list of segments for this      struct TkTextSegment *nextPtr;      /* Next in list of segments for this
157                                           * line, or NULL for end of list. */                                           * line, or NULL for end of list. */
158      int size;                           /* Size of this segment (# of bytes      int size;                           /* Size of this segment (# of bytes
159                                           * of index space it occupies). */                                           * of index space it occupies). */
160      union {      union {
161          char chars[4];                  /* Characters that make up character          char chars[4];                  /* Characters that make up character
162                                           * info.  Actual length varies to                                           * info.  Actual length varies to
163                                           * hold as many characters as needed.*/                                           * hold as many characters as needed.*/
164          TkTextToggle toggle;            /* Information about tag toggle. */          TkTextToggle toggle;            /* Information about tag toggle. */
165          TkTextMark mark;                /* Information about mark. */          TkTextMark mark;                /* Information about mark. */
166          TkTextEmbWindow ew;             /* Information about embedded          TkTextEmbWindow ew;             /* Information about embedded
167                                           * window. */                                           * window. */
168          TkTextEmbImage ei;              /* Information about embedded          TkTextEmbImage ei;              /* Information about embedded
169                                           * image. */                                           * image. */
170      } body;      } body;
171  } TkTextSegment;  } TkTextSegment;
172    
173  /*  /*
174   * Data structures of the type defined below are used during the   * Data structures of the type defined below are used during the
175   * execution of Tcl commands to keep track of various interesting   * execution of Tcl commands to keep track of various interesting
176   * places in a text.  An index is only valid up until the next   * places in a text.  An index is only valid up until the next
177   * modification to the character structure of the b-tree so they   * modification to the character structure of the b-tree so they
178   * can't be retained across Tcl commands.  However, mods to marks   * can't be retained across Tcl commands.  However, mods to marks
179   * or tags don't invalidate indices.   * or tags don't invalidate indices.
180   */   */
181    
182  typedef struct TkTextIndex {  typedef struct TkTextIndex {
183      TkTextBTree tree;                   /* Tree containing desired position. */      TkTextBTree tree;                   /* Tree containing desired position. */
184      TkTextLine *linePtr;                /* Pointer to line containing position      TkTextLine *linePtr;                /* Pointer to line containing position
185                                           * of interest. */                                           * of interest. */
186      int byteIndex;                      /* Index within line of desired      int byteIndex;                      /* Index within line of desired
187                                           * character (0 means first one). */                                           * character (0 means first one). */
188  } TkTextIndex;  } TkTextIndex;
189    
190  /*  /*
191   * Types for procedure pointers stored in TkTextDispChunk strutures:   * Types for procedure pointers stored in TkTextDispChunk strutures:
192   */   */
193    
194  typedef struct TkTextDispChunk TkTextDispChunk;  typedef struct TkTextDispChunk TkTextDispChunk;
195    
196  typedef void            Tk_ChunkDisplayProc _ANSI_ARGS_((  typedef void            Tk_ChunkDisplayProc _ANSI_ARGS_((
197                              TkTextDispChunk *chunkPtr, int x, int y,                              TkTextDispChunk *chunkPtr, int x, int y,
198                              int height, int baseline, Display *display,                              int height, int baseline, Display *display,
199                              Drawable dst, int screenY));                              Drawable dst, int screenY));
200  typedef void            Tk_ChunkUndisplayProc _ANSI_ARGS_((  typedef void            Tk_ChunkUndisplayProc _ANSI_ARGS_((
201                              struct TkText *textPtr,                              struct TkText *textPtr,
202                              TkTextDispChunk *chunkPtr));                              TkTextDispChunk *chunkPtr));
203  typedef int             Tk_ChunkMeasureProc _ANSI_ARGS_((  typedef int             Tk_ChunkMeasureProc _ANSI_ARGS_((
204                              TkTextDispChunk *chunkPtr, int x));                              TkTextDispChunk *chunkPtr, int x));
205  typedef void            Tk_ChunkBboxProc _ANSI_ARGS_((  typedef void            Tk_ChunkBboxProc _ANSI_ARGS_((
206                              TkTextDispChunk *chunkPtr, int index, int y,                              TkTextDispChunk *chunkPtr, int index, int y,
207                              int lineHeight, int baseline, int *xPtr,                              int lineHeight, int baseline, int *xPtr,
208                              int *yPtr, int *widthPtr, int *heightPtr));                              int *yPtr, int *widthPtr, int *heightPtr));
209    
210  /*  /*
211   * The structure below represents a chunk of stuff that is displayed   * The structure below represents a chunk of stuff that is displayed
212   * together on the screen.  This structure is allocated and freed by   * together on the screen.  This structure is allocated and freed by
213   * generic display code but most of its fields are filled in by   * generic display code but most of its fields are filled in by
214   * segment-type-specific code.   * segment-type-specific code.
215   */   */
216    
217  struct TkTextDispChunk {  struct TkTextDispChunk {
218      /*      /*
219       * The fields below are set by the type-independent code before       * The fields below are set by the type-independent code before
220       * calling the segment-type-specific layoutProc.  They should not       * calling the segment-type-specific layoutProc.  They should not
221       * be modified by segment-type-specific code.       * be modified by segment-type-specific code.
222       */       */
223    
224      int x;                              /* X position of chunk, in pixels.      int x;                              /* X position of chunk, in pixels.
225                                           * This position is measured from the                                           * This position is measured from the
226                                           * left edge of the logical line,                                           * left edge of the logical line,
227                                           * not from the left edge of the                                           * not from the left edge of the
228                                           * window (i.e. it doesn't change                                           * window (i.e. it doesn't change
229                                           * under horizontal scrolling). */                                           * under horizontal scrolling). */
230      struct TkTextDispChunk *nextPtr;    /* Next chunk in the display line      struct TkTextDispChunk *nextPtr;    /* Next chunk in the display line
231                                           * or NULL for the end of the list. */                                           * or NULL for the end of the list. */
232      struct TextStyle *stylePtr;         /* Display information, known only      struct TextStyle *stylePtr;         /* Display information, known only
233                                           * to tkTextDisp.c. */                                           * to tkTextDisp.c. */
234    
235      /*      /*
236       * The fields below are set by the layoutProc that creates the       * The fields below are set by the layoutProc that creates the
237       * chunk.       * chunk.
238       */       */
239    
240      Tk_ChunkDisplayProc *displayProc;   /* Procedure to invoke to draw this      Tk_ChunkDisplayProc *displayProc;   /* Procedure to invoke to draw this
241                                           * chunk on the display or an                                           * chunk on the display or an
242                                           * off-screen pixmap. */                                           * off-screen pixmap. */
243      Tk_ChunkUndisplayProc *undisplayProc;      Tk_ChunkUndisplayProc *undisplayProc;
244                                          /* Procedure to invoke when segment                                          /* Procedure to invoke when segment
245                                           * ceases to be displayed on screen                                           * ceases to be displayed on screen
246                                           * anymore. */                                           * anymore. */
247      Tk_ChunkMeasureProc *measureProc;   /* Procedure to find character under      Tk_ChunkMeasureProc *measureProc;   /* Procedure to find character under
248                                           * a given x-location. */                                           * a given x-location. */
249      Tk_ChunkBboxProc *bboxProc;         /* Procedure to find bounding box      Tk_ChunkBboxProc *bboxProc;         /* Procedure to find bounding box
250                                           * of character in chunk. */                                           * of character in chunk. */
251      int numBytes;                       /* Number of bytes that will be      int numBytes;                       /* Number of bytes that will be
252                                           * displayed in the chunk. */                                           * displayed in the chunk. */
253      int minAscent;                      /* Minimum space above the baseline      int minAscent;                      /* Minimum space above the baseline
254                                           * needed by this chunk. */                                           * needed by this chunk. */
255      int minDescent;                     /* Minimum space below the baseline      int minDescent;                     /* Minimum space below the baseline
256                                           * needed by this chunk. */                                           * needed by this chunk. */
257      int minHeight;                      /* Minimum total line height needed      int minHeight;                      /* Minimum total line height needed
258                                           * by this chunk. */                                           * by this chunk. */
259      int width;                          /* Width of this chunk, in pixels.      int width;                          /* Width of this chunk, in pixels.
260                                           * Initially set by chunk-specific                                           * Initially set by chunk-specific
261                                           * code, but may be increased to                                           * code, but may be increased to
262                                           * include tab or extra space at end                                           * include tab or extra space at end
263                                           * of line. */                                           * of line. */
264      int breakIndex;                     /* Index within chunk of last      int breakIndex;                     /* Index within chunk of last
265                                           * acceptable position for a line                                           * acceptable position for a line
266                                           * (break just before this byte index).                                           * (break just before this byte index).
267                                           * <= 0 means don't break during or                                           * <= 0 means don't break during or
268                                           * immediately after this chunk. */                                           * immediately after this chunk. */
269      ClientData clientData;              /* Additional information for use      ClientData clientData;              /* Additional information for use
270                                           * of displayProc and undisplayProc. */                                           * of displayProc and undisplayProc. */
271  };  };
272    
273  /*  /*
274   * One data structure of the following type is used for each tag in a   * One data structure of the following type is used for each tag in a
275   * text widget.  These structures are kept in textPtr->tagTable and   * text widget.  These structures are kept in textPtr->tagTable and
276   * referred to in other structures.   * referred to in other structures.
277   */   */
278    
279  typedef enum {  TEXT_WRAPMODE_NULL, TEXT_WRAPMODE_NONE,  typedef enum {  TEXT_WRAPMODE_NULL, TEXT_WRAPMODE_NONE,
280                  TEXT_WRAPMODE_CHAR, TEXT_WRAPMODE_WORD                  TEXT_WRAPMODE_CHAR, TEXT_WRAPMODE_WORD
281  } TkWrapMode;  } TkWrapMode;
282    
283  extern Tk_CustomOption textWrapModeOption;  extern Tk_CustomOption textWrapModeOption;
284    
285  typedef struct TkTextTag {  typedef struct TkTextTag {
286      char *name;                 /* Name of this tag.  This field is actually      char *name;                 /* Name of this tag.  This field is actually
287                                   * a pointer to the key from the entry in                                   * a pointer to the key from the entry in
288                                   * textPtr->tagTable, so it needn't be freed                                   * textPtr->tagTable, so it needn't be freed
289                                   * explicitly. */                                   * explicitly. */
290      int priority;               /* Priority of this tag within widget.  0      int priority;               /* Priority of this tag within widget.  0
291                                   * means lowest priority.  Exactly one tag                                   * means lowest priority.  Exactly one tag
292                                   * has each integer value between 0 and                                   * has each integer value between 0 and
293                                   * numTags-1. */                                   * numTags-1. */
294      struct Node *tagRootPtr;    /* Pointer into the B-Tree at the lowest      struct Node *tagRootPtr;    /* Pointer into the B-Tree at the lowest
295                                   * node that completely dominates the ranges                                   * node that completely dominates the ranges
296                                   * of text occupied by the tag.  At this                                   * of text occupied by the tag.  At this
297                                   * node there is no information about the                                   * node there is no information about the
298                                   * tag.  One or more children of the node                                   * tag.  One or more children of the node
299                                   * do contain information about the tag. */                                   * do contain information about the tag. */
300      int toggleCount;            /* Total number of tag toggles */      int toggleCount;            /* Total number of tag toggles */
301    
302      /*      /*
303       * Information for displaying text with this tag.  The information       * Information for displaying text with this tag.  The information
304       * belows acts as an override on information specified by lower-priority       * belows acts as an override on information specified by lower-priority
305       * tags.  If no value is specified, then the next-lower-priority tag       * tags.  If no value is specified, then the next-lower-priority tag
306       * on the text determins the value.  The text widget itself provides       * on the text determins the value.  The text widget itself provides
307       * defaults if no tag specifies an override.       * defaults if no tag specifies an override.
308       */       */
309    
310      Tk_3DBorder border;         /* Used for drawing background.  NULL means      Tk_3DBorder border;         /* Used for drawing background.  NULL means
311                                   * no value specified here. */                                   * no value specified here. */
312      char *bdString;             /* -borderwidth option string (malloc-ed).      char *bdString;             /* -borderwidth option string (malloc-ed).
313                                   * NULL means option not specified. */                                   * NULL means option not specified. */
314      int borderWidth;            /* Width of 3-D border for background. */      int borderWidth;            /* Width of 3-D border for background. */
315      char *reliefString;         /* -relief option string (malloc-ed).      char *reliefString;         /* -relief option string (malloc-ed).
316                                   * NULL means option not specified. */                                   * NULL means option not specified. */
317      int relief;                 /* 3-D relief for background. */      int relief;                 /* 3-D relief for background. */
318      Pixmap bgStipple;           /* Stipple bitmap for background.  None      Pixmap bgStipple;           /* Stipple bitmap for background.  None
319                                   * means no value specified here. */                                   * means no value specified here. */
320      XColor *fgColor;            /* Foreground color for text.  NULL means      XColor *fgColor;            /* Foreground color for text.  NULL means
321                                   * no value specified here. */                                   * no value specified here. */
322      Tk_Font tkfont;             /* Font for displaying text.  NULL means      Tk_Font tkfont;             /* Font for displaying text.  NULL means
323                                   * no value specified here. */                                   * no value specified here. */
324      Pixmap fgStipple;           /* Stipple bitmap for text and other      Pixmap fgStipple;           /* Stipple bitmap for text and other
325                                   * foreground stuff.   None means no value                                   * foreground stuff.   None means no value
326                                   * specified here.*/                                   * specified here.*/
327      char *justifyString;        /* -justify option string (malloc-ed).      char *justifyString;        /* -justify option string (malloc-ed).
328                                   * NULL means option not specified. */                                   * NULL means option not specified. */
329      Tk_Justify justify;         /* How to justify text: TK_JUSTIFY_LEFT,      Tk_Justify justify;         /* How to justify text: TK_JUSTIFY_LEFT,
330                                   * TK_JUSTIFY_RIGHT, or TK_JUSTIFY_CENTER.                                   * TK_JUSTIFY_RIGHT, or TK_JUSTIFY_CENTER.
331                                   * Only valid if justifyString is non-NULL. */                                   * Only valid if justifyString is non-NULL. */
332      char *lMargin1String;       /* -lmargin1 option string (malloc-ed).      char *lMargin1String;       /* -lmargin1 option string (malloc-ed).
333                                   * NULL means option not specified. */                                   * NULL means option not specified. */
334      int lMargin1;               /* Left margin for first display line of      int lMargin1;               /* Left margin for first display line of
335                                   * each text line, in pixels.  Only valid                                   * each text line, in pixels.  Only valid
336                                   * if lMargin1String is non-NULL. */                                   * if lMargin1String is non-NULL. */
337      char *lMargin2String;       /* -lmargin2 option string (malloc-ed).      char *lMargin2String;       /* -lmargin2 option string (malloc-ed).
338                                   * NULL means option not specified. */                                   * NULL means option not specified. */
339      int lMargin2;               /* Left margin for second and later display      int lMargin2;               /* Left margin for second and later display
340                                   * lines of each text line, in pixels.  Only                                   * lines of each text line, in pixels.  Only
341                                   * valid if lMargin2String is non-NULL. */                                   * valid if lMargin2String is non-NULL. */
342      char *offsetString;         /* -offset option string (malloc-ed).      char *offsetString;         /* -offset option string (malloc-ed).
343                                   * NULL means option not specified. */                                   * NULL means option not specified. */
344      int offset;                 /* Vertical offset of text's baseline from      int offset;                 /* Vertical offset of text's baseline from
345                                   * baseline of line.  Used for superscripts                                   * baseline of line.  Used for superscripts
346                                   * and subscripts.  Only valid if                                   * and subscripts.  Only valid if
347                                   * offsetString is non-NULL. */                                   * offsetString is non-NULL. */
348      char *overstrikeString;     /* -overstrike option string (malloc-ed).      char *overstrikeString;     /* -overstrike option string (malloc-ed).
349                                   * NULL means option not specified. */                                   * NULL means option not specified. */
350      int overstrike;             /* Non-zero means draw horizontal line through      int overstrike;             /* Non-zero means draw horizontal line through
351                                   * middle of text.  Only valid if                                   * middle of text.  Only valid if
352                                   * overstrikeString is non-NULL. */                                   * overstrikeString is non-NULL. */
353      char *rMarginString;        /* -rmargin option string (malloc-ed).      char *rMarginString;        /* -rmargin option string (malloc-ed).
354                                   * NULL means option not specified. */                                   * NULL means option not specified. */
355      int rMargin;                /* Right margin for text, in pixels.  Only      int rMargin;                /* Right margin for text, in pixels.  Only
356                                   * valid if rMarginString is non-NULL. */                                   * valid if rMarginString is non-NULL. */
357      char *spacing1String;       /* -spacing1 option string (malloc-ed).      char *spacing1String;       /* -spacing1 option string (malloc-ed).
358                                   * NULL means option not specified. */                                   * NULL means option not specified. */
359      int spacing1;               /* Extra spacing above first display      int spacing1;               /* Extra spacing above first display
360                                   * line for text line.  Only valid if                                   * line for text line.  Only valid if
361                                   * spacing1String is non-NULL. */                                   * spacing1String is non-NULL. */
362      char *spacing2String;       /* -spacing2 option string (malloc-ed).      char *spacing2String;       /* -spacing2 option string (malloc-ed).
363                                   * NULL means option not specified. */                                   * NULL means option not specified. */
364      int spacing2;               /* Extra spacing between display      int spacing2;               /* Extra spacing between display
365                                   * lines for the same text line.  Only valid                                   * lines for the same text line.  Only valid
366                                   * if spacing2String is non-NULL. */                                   * if spacing2String is non-NULL. */
367      char *spacing3String;       /* -spacing2 option string (malloc-ed).      char *spacing3String;       /* -spacing2 option string (malloc-ed).
368                                   * NULL means option not specified. */                                   * NULL means option not specified. */
369      int spacing3;               /* Extra spacing below last display      int spacing3;               /* Extra spacing below last display
370                                   * line for text line.  Only valid if                                   * line for text line.  Only valid if
371                                   * spacing3String is non-NULL. */                                   * spacing3String is non-NULL. */
372      char *tabString;            /* -tabs option string (malloc-ed).      char *tabString;            /* -tabs option string (malloc-ed).
373                                   * NULL means option not specified. */                                   * NULL means option not specified. */
374      struct TkTextTabArray *tabArrayPtr;      struct TkTextTabArray *tabArrayPtr;
375                                  /* Info about tabs for tag (malloc-ed)                                  /* Info about tabs for tag (malloc-ed)
376                                   * or NULL.  Corresponds to tabString. */                                   * or NULL.  Corresponds to tabString. */
377      char *underlineString;      /* -underline option string (malloc-ed).      char *underlineString;      /* -underline option string (malloc-ed).
378                                   * NULL means option not specified. */                                   * NULL means option not specified. */
379      int underline;              /* Non-zero means draw underline underneath      int underline;              /* Non-zero means draw underline underneath
380                                   * text.  Only valid if underlineString is                                   * text.  Only valid if underlineString is
381                                   * non-NULL. */                                   * non-NULL. */
382      TkWrapMode wrapMode;        /* How to handle wrap-around for this tag.      TkWrapMode wrapMode;        /* How to handle wrap-around for this tag.
383                                   * Must be TEXT_WRAPMODE_CHAR,                                   * Must be TEXT_WRAPMODE_CHAR,
384                                   * TEXT_WRAPMODE_NONE, TEXT_WRAPMODE_WORD,                                   * TEXT_WRAPMODE_NONE, TEXT_WRAPMODE_WORD,
385                                   * or TEXT_WRAPMODE_NULL to use wrapmode for                                   * or TEXT_WRAPMODE_NULL to use wrapmode for
386                                   * whole widget. */                                   * whole widget. */
387      char *elideString;          /* -elide option string (malloc-ed).      char *elideString;          /* -elide option string (malloc-ed).
388                                   * NULL means option not specified. */                                   * NULL means option not specified. */
389      int elide;                  /* Non-zero means that data under this tag      int elide;                  /* Non-zero means that data under this tag
390                                   * should not be displayed. */                                   * should not be displayed. */
391      int affectsDisplay;         /* Non-zero means that this tag affects the      int affectsDisplay;         /* Non-zero means that this tag affects the
392                                   * way information is displayed on the screen                                   * way information is displayed on the screen
393                                   * (so need to redisplay if tag changes). */                                   * (so need to redisplay if tag changes). */
394  } TkTextTag;  } TkTextTag;
395    
396  #define TK_TAG_AFFECTS_DISPLAY  0x1  #define TK_TAG_AFFECTS_DISPLAY  0x1
397  #define TK_TAG_UNDERLINE        0x2  #define TK_TAG_UNDERLINE        0x2
398  #define TK_TAG_JUSTIFY          0x4  #define TK_TAG_JUSTIFY          0x4
399  #define TK_TAG_OFFSET           0x10  #define TK_TAG_OFFSET           0x10
400    
401  /*  /*
402   * The data structure below is used for searching a B-tree for transitions   * The data structure below is used for searching a B-tree for transitions
403   * on a single tag (or for all tag transitions).  No code outside of   * on a single tag (or for all tag transitions).  No code outside of
404   * tkTextBTree.c should ever modify any of the fields in these structures,   * tkTextBTree.c should ever modify any of the fields in these structures,
405   * but it's OK to use them for read-only information.   * but it's OK to use them for read-only information.
406   */   */
407    
408  typedef struct TkTextSearch {  typedef struct TkTextSearch {
409      TkTextIndex curIndex;               /* Position of last tag transition      TkTextIndex curIndex;               /* Position of last tag transition
410                                           * returned by TkBTreeNextTag, or                                           * returned by TkBTreeNextTag, or
411                                           * index of start of segment                                           * index of start of segment
412                                           * containing starting position for                                           * containing starting position for
413                                           * search if TkBTreeNextTag hasn't                                           * search if TkBTreeNextTag hasn't
414                                           * been called yet, or same as                                           * been called yet, or same as
415                                           * stopIndex if search is over. */                                           * stopIndex if search is over. */
416      TkTextSegment *segPtr;              /* Actual tag segment returned by last      TkTextSegment *segPtr;              /* Actual tag segment returned by last
417                                           * call to TkBTreeNextTag, or NULL if                                           * call to TkBTreeNextTag, or NULL if
418                                           * TkBTreeNextTag hasn't returned                                           * TkBTreeNextTag hasn't returned
419                                           * anything yet. */                                           * anything yet. */
420      TkTextSegment *nextPtr;             /* Where to resume search in next      TkTextSegment *nextPtr;             /* Where to resume search in next
421                                           * call to TkBTreeNextTag. */                                           * call to TkBTreeNextTag. */
422      TkTextSegment *lastPtr;             /* Stop search before just before      TkTextSegment *lastPtr;             /* Stop search before just before
423                                           * considering this segment. */                                           * considering this segment. */
424      TkTextTag *tagPtr;                  /* Tag to search for (or tag found, if      TkTextTag *tagPtr;                  /* Tag to search for (or tag found, if
425                                           * allTags is non-zero). */                                           * allTags is non-zero). */
426      int linesLeft;                      /* Lines left to search (including      int linesLeft;                      /* Lines left to search (including
427                                           * curIndex and stopIndex).  When                                           * curIndex and stopIndex).  When
428                                           * this becomes <= 0 the search is                                           * this becomes <= 0 the search is
429                                           * over. */                                           * over. */
430      int allTags;                        /* Non-zero means ignore tag check:      int allTags;                        /* Non-zero means ignore tag check:
431                                           * search for transitions on all                                           * search for transitions on all
432                                           * tags. */                                           * tags. */
433  } TkTextSearch;  } TkTextSearch;
434    
435  /*  /*
436   * The following data structure describes a single tab stop.   * The following data structure describes a single tab stop.
437   */   */
438    
439  typedef enum {LEFT, RIGHT, CENTER, NUMERIC} TkTextTabAlign;  typedef enum {LEFT, RIGHT, CENTER, NUMERIC} TkTextTabAlign;
440    
441  typedef struct TkTextTab {  typedef struct TkTextTab {
442      int location;                       /* Offset in pixels of this tab stop      int location;                       /* Offset in pixels of this tab stop
443                                           * from the left margin (lmargin2) of                                           * from the left margin (lmargin2) of
444                                           * the text. */                                           * the text. */
445      TkTextTabAlign alignment;           /* Where the tab stop appears relative      TkTextTabAlign alignment;           /* Where the tab stop appears relative
446                                           * to the text. */                                           * to the text. */
447  } TkTextTab;  } TkTextTab;
448    
449  typedef struct TkTextTabArray {  typedef struct TkTextTabArray {
450      int numTabs;                        /* Number of tab stops. */      int numTabs;                        /* Number of tab stops. */
451      TkTextTab tabs[1];                  /* Array of tabs.  The actual size      TkTextTab tabs[1];                  /* Array of tabs.  The actual size
452                                           * will be numTabs.  THIS FIELD MUST                                           * will be numTabs.  THIS FIELD MUST
453                                           * BE THE LAST IN THE STRUCTURE. */                                           * BE THE LAST IN THE STRUCTURE. */
454  } TkTextTabArray;  } TkTextTabArray;
455    
456  /*  /*
457   * A data structure of the following type is kept for each text widget that   * A data structure of the following type is kept for each text widget that
458   * currently exists for this process:   * currently exists for this process:
459   */   */
460    
461  typedef struct TkText {  typedef struct TkText {
462      Tk_Window tkwin;            /* Window that embodies the text.  NULL      Tk_Window tkwin;            /* Window that embodies the text.  NULL
463                                   * means that the window has been destroyed                                   * means that the window has been destroyed
464                                   * but the data structures haven't yet been                                   * but the data structures haven't yet been
465                                   * cleaned up.*/                                   * cleaned up.*/
466      Display *display;           /* Display for widget.  Needed, among other      Display *display;           /* Display for widget.  Needed, among other
467                                   * things, to allow resources to be freed                                   * things, to allow resources to be freed
468                                   * even after tkwin has gone away. */                                   * even after tkwin has gone away. */
469      Tcl_Interp *interp;         /* Interpreter associated with widget.  Used      Tcl_Interp *interp;         /* Interpreter associated with widget.  Used
470                                   * to delete widget command.  */                                   * to delete widget command.  */
471      Tcl_Command widgetCmd;      /* Token for text's widget command. */      Tcl_Command widgetCmd;      /* Token for text's widget command. */
472      TkTextBTree tree;           /* B-tree representation of text and tags for      TkTextBTree tree;           /* B-tree representation of text and tags for
473                                   * widget. */                                   * widget. */
474      Tcl_HashTable tagTable;     /* Hash table that maps from tag names to      Tcl_HashTable tagTable;     /* Hash table that maps from tag names to
475                                   * pointers to TkTextTag structures. */                                   * pointers to TkTextTag structures. */
476      int numTags;                /* Number of tags currently defined for      int numTags;                /* Number of tags currently defined for
477                                   * widget;  needed to keep track of                                   * widget;  needed to keep track of
478                                   * priorities. */                                   * priorities. */
479      Tcl_HashTable markTable;    /* Hash table that maps from mark names to      Tcl_HashTable markTable;    /* Hash table that maps from mark names to
480                                   * pointers to mark segments. */                                   * pointers to mark segments. */
481      Tcl_HashTable windowTable;  /* Hash table that maps from window names      Tcl_HashTable windowTable;  /* Hash table that maps from window names
482                                   * to pointers to window segments.  If a                                   * to pointers to window segments.  If a
483                                   * window segment doesn't yet have an                                   * window segment doesn't yet have an
484                                   * associated window, there is no entry for                                   * associated window, there is no entry for
485                                   * it here. */                                   * it here. */
486      Tcl_HashTable imageTable;   /* Hash table that maps from image names      Tcl_HashTable imageTable;   /* Hash table that maps from image names
487                                   * to pointers to image segments.  If an                                   * to pointers to image segments.  If an
488                                   * image segment doesn't yet have an                                   * image segment doesn't yet have an
489                                   * associated image, there is no entry for                                   * associated image, there is no entry for
490                                   * it here. */                                   * it here. */
491      int state;                  /* Either STATE_NORMAL or STATE_DISABLED. A      int state;                  /* Either STATE_NORMAL or STATE_DISABLED. A
492                                   * text widget is read-only when disabled. */                                   * text widget is read-only when disabled. */
493    
494      /*      /*
495       * Default information for displaying (may be overridden by tags       * Default information for displaying (may be overridden by tags
496       * applied to ranges of characters).       * applied to ranges of characters).
497       */       */
498    
499      Tk_3DBorder border;         /* Structure used to draw 3-D border and      Tk_3DBorder border;         /* Structure used to draw 3-D border and
500                                   * default background. */                                   * default background. */
501      int borderWidth;            /* Width of 3-D border to draw around entire      int borderWidth;            /* Width of 3-D border to draw around entire
502                                   * widget. */                                   * widget. */
503      int padX, padY;             /* Padding between text and window border. */      int padX, padY;             /* Padding between text and window border. */
504      int relief;                 /* 3-d effect for border around entire      int relief;                 /* 3-d effect for border around entire
505                                   * widget: TK_RELIEF_RAISED etc. */                                   * widget: TK_RELIEF_RAISED etc. */
506      int highlightWidth;         /* Width in pixels of highlight to draw      int highlightWidth;         /* Width in pixels of highlight to draw
507                                   * around widget when it has the focus.                                   * around widget when it has the focus.
508                                   * <= 0 means don't draw a highlight. */                                   * <= 0 means don't draw a highlight. */
509      XColor *highlightBgColorPtr;      XColor *highlightBgColorPtr;
510                                  /* Color for drawing traversal highlight                                  /* Color for drawing traversal highlight
511                                   * area when highlight is off. */                                   * area when highlight is off. */
512      XColor *highlightColorPtr;  /* Color for drawing traversal highlight. */      XColor *highlightColorPtr;  /* Color for drawing traversal highlight. */
513      Tk_Cursor cursor;           /* Current cursor for window, or None. */      Tk_Cursor cursor;           /* Current cursor for window, or None. */
514      XColor *fgColor;            /* Default foreground color for text. */      XColor *fgColor;            /* Default foreground color for text. */
515      Tk_Font tkfont;             /* Default font for displaying text. */      Tk_Font tkfont;             /* Default font for displaying text. */
516      int charWidth;              /* Width of average character in default      int charWidth;              /* Width of average character in default
517                                   * font. */                                   * font. */
518      int spacing1;               /* Default extra spacing above first display      int spacing1;               /* Default extra spacing above first display
519                                   * line for each text line. */                                   * line for each text line. */
520      int spacing2;               /* Default extra spacing between display lines      int spacing2;               /* Default extra spacing between display lines
521                                   * for the same text line. */                                   * for the same text line. */
522      int spacing3;               /* Default extra spacing below last display      int spacing3;               /* Default extra spacing below last display
523                                   * line for each text line. */                                   * line for each text line. */
524      char *tabOptionString;      /* Value of -tabs option string (malloc'ed). */      char *tabOptionString;      /* Value of -tabs option string (malloc'ed). */
525      TkTextTabArray *tabArrayPtr;      TkTextTabArray *tabArrayPtr;
526                                  /* Information about tab stops (malloc'ed).                                  /* Information about tab stops (malloc'ed).
527                                   * NULL means perform default tabbing                                   * NULL means perform default tabbing
528                                   * behavior. */                                   * behavior. */
529    
530      /*      /*
531       * Additional information used for displaying:       * Additional information used for displaying:
532       */       */
533    
534      TkWrapMode wrapMode;        /* How to handle wrap-around.  Must be      TkWrapMode wrapMode;        /* How to handle wrap-around.  Must be
535                                   * TEXT_WRAPMODE_CHAR, TEXT_WRAPMODE_NONE, or                                   * TEXT_WRAPMODE_CHAR, TEXT_WRAPMODE_NONE, or
536                                   * TEXT_WRAPMODE_WORD. */                                   * TEXT_WRAPMODE_WORD. */
537      int width, height;          /* Desired dimensions for window, measured      int width, height;          /* Desired dimensions for window, measured
538                                   * in characters. */                                   * in characters. */
539      int setGrid;                /* Non-zero means pass gridding information      int setGrid;                /* Non-zero means pass gridding information
540                                   * to window manager. */                                   * to window manager. */
541      int prevWidth, prevHeight;  /* Last known dimensions of window;  used to      int prevWidth, prevHeight;  /* Last known dimensions of window;  used to
542                                   * detect changes in size. */                                   * detect changes in size. */
543      TkTextIndex topIndex;       /* Identifies first character in top display      TkTextIndex topIndex;       /* Identifies first character in top display
544                                   * line of window. */                                   * line of window. */
545      struct TextDInfo *dInfoPtr; /* Information maintained by tkTextDisp.c. */      struct TextDInfo *dInfoPtr; /* Information maintained by tkTextDisp.c. */
546    
547      /*      /*
548       * Information related to selection.       * Information related to selection.
549       */       */
550    
551      TkTextTag *selTagPtr;       /* Pointer to "sel" tag.  Used to tell when      TkTextTag *selTagPtr;       /* Pointer to "sel" tag.  Used to tell when
552                                   * a new selection has been made. */                                   * a new selection has been made. */
553      Tk_3DBorder selBorder;      /* Border and background for selected      Tk_3DBorder selBorder;      /* Border and background for selected
554                                   * characters.  This is a copy of information                                   * characters.  This is a copy of information
555                                   * in *cursorTagPtr, so it shouldn't be                                   * in *cursorTagPtr, so it shouldn't be
556                                   * explicitly freed. */                                   * explicitly freed. */
557      char *selBdString;          /* Value of -selectborderwidth option, or NULL      char *selBdString;          /* Value of -selectborderwidth option, or NULL
558                                   * if not specified (malloc'ed). */                                   * if not specified (malloc'ed). */
559      XColor *selFgColorPtr;      /* Foreground color for selected text.      XColor *selFgColorPtr;      /* Foreground color for selected text.
560                                   * This is a copy of information in                                   * This is a copy of information in
561                                   * *cursorTagPtr, so it shouldn't be                                   * *cursorTagPtr, so it shouldn't be
562                                   * explicitly freed. */                                   * explicitly freed. */
563      int exportSelection;        /* Non-zero means tie "sel" tag to X      int exportSelection;        /* Non-zero means tie "sel" tag to X
564                                   * selection. */                                   * selection. */
565      TkTextIndex selIndex;       /* Used during multi-pass selection retrievals.      TkTextIndex selIndex;       /* Used during multi-pass selection retrievals.
566                                   * This index identifies the next character                                   * This index identifies the next character
567                                   * to be returned from the selection. */                                   * to be returned from the selection. */
568      int abortSelections;        /* Set to 1 whenever the text is modified      int abortSelections;        /* Set to 1 whenever the text is modified
569                                   * in a way that interferes with selection                                   * in a way that interferes with selection
570                                   * retrieval:  used to abort incremental                                   * retrieval:  used to abort incremental
571                                   * selection retrievals. */                                   * selection retrievals. */
572      int selOffset;              /* Offset in selection corresponding to      int selOffset;              /* Offset in selection corresponding to
573                                   * selLine and selCh.  -1 means neither                                   * selLine and selCh.  -1 means neither
574                                   * this information nor selIndex is of any                                   * this information nor selIndex is of any
575                                   * use. */                                   * use. */
576    
577      /*      /*
578       * Information related to insertion cursor:       * Information related to insertion cursor:
579       */       */
580    
581      TkTextSegment *insertMarkPtr;      TkTextSegment *insertMarkPtr;
582                                  /* Points to segment for "insert" mark. */                                  /* Points to segment for "insert" mark. */
583      Tk_3DBorder insertBorder;   /* Used to draw vertical bar for insertion      Tk_3DBorder insertBorder;   /* Used to draw vertical bar for insertion
584                                   * cursor. */                                   * cursor. */
585      int insertWidth;            /* Total width of insert cursor. */      int insertWidth;            /* Total width of insert cursor. */
586      int insertBorderWidth;      /* Width of 3-D border around insert cursor. */      int insertBorderWidth;      /* Width of 3-D border around insert cursor. */
587      int insertOnTime;           /* Number of milliseconds cursor should spend      int insertOnTime;           /* Number of milliseconds cursor should spend
588                                   * in "on" state for each blink. */                                   * in "on" state for each blink. */
589      int insertOffTime;          /* Number of milliseconds cursor should spend      int insertOffTime;          /* Number of milliseconds cursor should spend
590                                   * in "off" state for each blink. */                                   * in "off" state for each blink. */
591      Tcl_TimerToken insertBlinkHandler;      Tcl_TimerToken insertBlinkHandler;
592                                  /* Timer handler used to blink cursor on and                                  /* Timer handler used to blink cursor on and
593                                   * off. */                                   * off. */
594    
595      /*      /*
596       * Information used for event bindings associated with tags:       * Information used for event bindings associated with tags:
597       */       */
598    
599      Tk_BindingTable bindingTable;      Tk_BindingTable bindingTable;
600                                  /* Table of all bindings currently defined                                  /* Table of all bindings currently defined
601                                   * for this widget.  NULL means that no                                   * for this widget.  NULL means that no
602                                   * bindings exist, so the table hasn't been                                   * bindings exist, so the table hasn't been
603                                   * created.  Each "object" used for this                                   * created.  Each "object" used for this
604                                   * table is the address of a tag. */                                   * table is the address of a tag. */
605      TkTextSegment *currentMarkPtr;      TkTextSegment *currentMarkPtr;
606                                  /* Pointer to segment for "current" mark,                                  /* Pointer to segment for "current" mark,
607                                   * or NULL if none. */                                   * or NULL if none. */
608      XEvent pickEvent;           /* The event from which the current character      XEvent pickEvent;           /* The event from which the current character
609                                   * was chosen.  Must be saved so that we                                   * was chosen.  Must be saved so that we
610                                   * can repick after modifications to the                                   * can repick after modifications to the
611                                   * text. */                                   * text. */
612      int numCurTags;             /* Number of tags associated with character      int numCurTags;             /* Number of tags associated with character
613                                   * at current mark. */                                   * at current mark. */
614      TkTextTag **curTagArrayPtr; /* Pointer to array of tags for current      TkTextTag **curTagArrayPtr; /* Pointer to array of tags for current
615                                   * mark, or NULL if none. */                                   * mark, or NULL if none. */
616    
617      /*      /*
618       * Miscellaneous additional information:       * Miscellaneous additional information:
619       */       */
620    
621      char *takeFocus;            /* Value of -takeFocus option;  not used in      char *takeFocus;            /* Value of -takeFocus option;  not used in
622                                   * the C code, but used by keyboard traversal                                   * the C code, but used by keyboard traversal
623                                   * scripts.  Malloc'ed, but may be NULL. */                                   * scripts.  Malloc'ed, but may be NULL. */
624      char *xScrollCmd;           /* Prefix of command to issue to update      char *xScrollCmd;           /* Prefix of command to issue to update
625                                   * horizontal scrollbar when view changes. */                                   * horizontal scrollbar when view changes. */
626      char *yScrollCmd;           /* Prefix of command to issue to update      char *yScrollCmd;           /* Prefix of command to issue to update
627                                   * vertical scrollbar when view changes. */                                   * vertical scrollbar when view changes. */
628      int flags;                  /* Miscellaneous flags;  see below for      int flags;                  /* Miscellaneous flags;  see below for
629                                   * definitions. */                                   * definitions. */
630  } TkText;  } TkText;
631    
632  /*  /*
633   * Flag values for TkText records:   * Flag values for TkText records:
634   *   *
635   * GOT_SELECTION:               Non-zero means we've already claimed the   * GOT_SELECTION:               Non-zero means we've already claimed the
636   *                              selection.   *                              selection.
637   * INSERT_ON:                   Non-zero means insertion cursor should be   * INSERT_ON:                   Non-zero means insertion cursor should be
638   *                              displayed on screen.   *                              displayed on screen.
639   * GOT_FOCUS:                   Non-zero means this window has the input   * GOT_FOCUS:                   Non-zero means this window has the input
640   *                              focus.   *                              focus.
641   * BUTTON_DOWN:                 1 means that a mouse button is currently   * BUTTON_DOWN:                 1 means that a mouse button is currently
642   *                              down;  this is used to implement grabs   *                              down;  this is used to implement grabs
643   *                              for the duration of button presses.   *                              for the duration of button presses.
644   * UPDATE_SCROLLBARS:           Non-zero means scrollbar(s) should be updated   * UPDATE_SCROLLBARS:           Non-zero means scrollbar(s) should be updated
645   *                              during next redisplay operation.   *                              during next redisplay operation.
646   */   */
647    
648  #define GOT_SELECTION           1  #define GOT_SELECTION           1
649  #define INSERT_ON               2  #define INSERT_ON               2
650  #define GOT_FOCUS               4  #define GOT_FOCUS               4
651  #define BUTTON_DOWN             8  #define BUTTON_DOWN             8
652  #define UPDATE_SCROLLBARS       0x10  #define UPDATE_SCROLLBARS       0x10
653  #define NEED_REPICK             0x20  #define NEED_REPICK             0x20
654    
655  /*  /*
656   * Records of the following type define segment types in terms of   * Records of the following type define segment types in terms of
657   * a collection of procedures that may be called to manipulate   * a collection of procedures that may be called to manipulate
658   * segments of that type.   * segments of that type.
659   */   */
660    
661  typedef TkTextSegment * Tk_SegSplitProc _ANSI_ARGS_((  typedef TkTextSegment * Tk_SegSplitProc _ANSI_ARGS_((
662                              struct TkTextSegment *segPtr, int index));                              struct TkTextSegment *segPtr, int index));
663  typedef int             Tk_SegDeleteProc _ANSI_ARGS_((  typedef int             Tk_SegDeleteProc _ANSI_ARGS_((
664                              struct TkTextSegment *segPtr,                              struct TkTextSegment *segPtr,
665                              TkTextLine *linePtr, int treeGone));                              TkTextLine *linePtr, int treeGone));
666  typedef TkTextSegment * Tk_SegCleanupProc _ANSI_ARGS_((  typedef TkTextSegment * Tk_SegCleanupProc _ANSI_ARGS_((
667                              struct TkTextSegment *segPtr, TkTextLine *linePtr));                              struct TkTextSegment *segPtr, TkTextLine *linePtr));
668  typedef void            Tk_SegLineChangeProc _ANSI_ARGS_((  typedef void            Tk_SegLineChangeProc _ANSI_ARGS_((
669                              struct TkTextSegment *segPtr, TkTextLine *linePtr));                              struct TkTextSegment *segPtr, TkTextLine *linePtr));
670  typedef int             Tk_SegLayoutProc _ANSI_ARGS_((struct TkText *textPtr,  typedef int             Tk_SegLayoutProc _ANSI_ARGS_((struct TkText *textPtr,
671                              struct TkTextIndex *indexPtr, TkTextSegment *segPtr,                              struct TkTextIndex *indexPtr, TkTextSegment *segPtr,
672                              int offset, int maxX, int maxChars,                              int offset, int maxX, int maxChars,
673                              int noCharsYet, TkWrapMode wrapMode,                              int noCharsYet, TkWrapMode wrapMode,
674                              struct TkTextDispChunk *chunkPtr));                              struct TkTextDispChunk *chunkPtr));
675  typedef void            Tk_SegCheckProc _ANSI_ARGS_((TkTextSegment *segPtr,  typedef void            Tk_SegCheckProc _ANSI_ARGS_((TkTextSegment *segPtr,
676                              TkTextLine *linePtr));                              TkTextLine *linePtr));
677    
678  typedef struct Tk_SegType {  typedef struct Tk_SegType {
679      char *name;                         /* Name of this kind of segment. */      char *name;                         /* Name of this kind of segment. */
680      int leftGravity;                    /* If a segment has zero size (e.g. a      int leftGravity;                    /* If a segment has zero size (e.g. a
681                                           * mark or tag toggle), does it                                           * mark or tag toggle), does it
682                                           * attach to character to its left                                           * attach to character to its left
683                                           * or right?  1 means left, 0 means                                           * or right?  1 means left, 0 means
684                                           * right. */                                           * right. */
685      Tk_SegSplitProc *splitProc;         /* Procedure to split large segment      Tk_SegSplitProc *splitProc;         /* Procedure to split large segment
686                                           * into two smaller ones. */                                           * into two smaller ones. */
687      Tk_SegDeleteProc *deleteProc;       /* Procedure to call to delete      Tk_SegDeleteProc *deleteProc;       /* Procedure to call to delete
688                                           * segment. */                                           * segment. */
689      Tk_SegCleanupProc *cleanupProc;     /* After any change to a line, this      Tk_SegCleanupProc *cleanupProc;     /* After any change to a line, this
690                                           * procedure is invoked for all                                           * procedure is invoked for all
691                                           * segments left in the line to                                           * segments left in the line to
692                                           * perform any cleanup they wish                                           * perform any cleanup they wish
693                                           * (e.g. joining neighboring                                           * (e.g. joining neighboring
694                                           * segments). */                                           * segments). */
695      Tk_SegLineChangeProc *lineChangeProc;      Tk_SegLineChangeProc *lineChangeProc;
696                                          /* Invoked when a segment is about                                          /* Invoked when a segment is about
697                                           * to be moved from its current line                                           * to be moved from its current line
698                                           * to an earlier line because of                                           * to an earlier line because of
699                                           * a deletion.  The linePtr is that                                           * a deletion.  The linePtr is that
700                                           * for the segment's old line.                                           * for the segment's old line.
701                                           * CleanupProc will be invoked after                                           * CleanupProc will be invoked after
702                                           * the deletion is finished. */                                           * the deletion is finished. */
703      Tk_SegLayoutProc *layoutProc;       /* Returns size information when      Tk_SegLayoutProc *layoutProc;       /* Returns size information when
704                                           * figuring out what to display in                                           * figuring out what to display in
705                                           * window. */                                           * window. */
706      Tk_SegCheckProc *checkProc;         /* Called during consistency checks      Tk_SegCheckProc *checkProc;         /* Called during consistency checks
707                                           * to check internal consistency of                                           * to check internal consistency of
708                                           * segment. */                                           * segment. */
709  } Tk_SegType;  } Tk_SegType;
710    
711  /*  /*
712   * The constant below is used to specify a line when what is really   * The constant below is used to specify a line when what is really
713   * wanted is the entire text.  For now, just use a very big number.   * wanted is the entire text.  For now, just use a very big number.
714   */   */
715    
716  #define TK_END_OF_TEXT 1000000  #define TK_END_OF_TEXT 1000000
717    
718  /*  /*
719   * The following definition specifies the maximum number of characters   * The following definition specifies the maximum number of characters
720   * needed in a string to hold a position specifier.   * needed in a string to hold a position specifier.
721   */   */
722    
723  #define TK_POS_CHARS 30  #define TK_POS_CHARS 30
724    
725  /*  /*
726   * Declarations for variables shared among the text-related files:   * Declarations for variables shared among the text-related files:
727   */   */
728    
729  extern int              tkBTreeDebug;  extern int              tkBTreeDebug;
730  extern int              tkTextDebug;  extern int              tkTextDebug;
731  extern Tk_SegType       tkTextCharType;  extern Tk_SegType       tkTextCharType;
732  extern Tk_SegType       tkTextLeftMarkType;  extern Tk_SegType       tkTextLeftMarkType;
733  extern Tk_SegType       tkTextRightMarkType;  extern Tk_SegType       tkTextRightMarkType;
734  extern Tk_SegType       tkTextToggleOnType;  extern Tk_SegType       tkTextToggleOnType;
735  extern Tk_SegType       tkTextToggleOffType;  extern Tk_SegType       tkTextToggleOffType;
736    
737  /*  /*
738   * Declarations for procedures that are used by the text-related files   * Declarations for procedures that are used by the text-related files
739   * but shouldn't be used anywhere else in Tk (or by Tk clients):   * but shouldn't be used anywhere else in Tk (or by Tk clients):
740   */   */
741    
742  extern int              TkBTreeCharTagged _ANSI_ARGS_((TkTextIndex *indexPtr,  extern int              TkBTreeCharTagged _ANSI_ARGS_((TkTextIndex *indexPtr,
743                              TkTextTag *tagPtr));                              TkTextTag *tagPtr));
744  extern void             TkBTreeCheck _ANSI_ARGS_((TkTextBTree tree));  extern void             TkBTreeCheck _ANSI_ARGS_((TkTextBTree tree));
745  extern int              TkBTreeCharsInLine _ANSI_ARGS_((TkTextLine *linePtr));  extern int              TkBTreeCharsInLine _ANSI_ARGS_((TkTextLine *linePtr));
746  extern int              TkBTreeBytesInLine _ANSI_ARGS_((TkTextLine *linePtr));  extern int              TkBTreeBytesInLine _ANSI_ARGS_((TkTextLine *linePtr));
747  extern TkTextBTree      TkBTreeCreate _ANSI_ARGS_((TkText *textPtr));  extern TkTextBTree      TkBTreeCreate _ANSI_ARGS_((TkText *textPtr));
748  extern void             TkBTreeDestroy _ANSI_ARGS_((TkTextBTree tree));  extern void             TkBTreeDestroy _ANSI_ARGS_((TkTextBTree tree));
749  extern void             TkBTreeDeleteChars _ANSI_ARGS_((TkTextIndex *index1Ptr,  extern void             TkBTreeDeleteChars _ANSI_ARGS_((TkTextIndex *index1Ptr,
750                              TkTextIndex *index2Ptr));                              TkTextIndex *index2Ptr));
751  extern TkTextLine *     TkBTreeFindLine _ANSI_ARGS_((TkTextBTree tree,  extern TkTextLine *     TkBTreeFindLine _ANSI_ARGS_((TkTextBTree tree,
752                              int line));                              int line));
753  extern TkTextTag **     TkBTreeGetTags _ANSI_ARGS_((TkTextIndex *indexPtr,  extern TkTextTag **     TkBTreeGetTags _ANSI_ARGS_((TkTextIndex *indexPtr,
754                              int *numTagsPtr));                              int *numTagsPtr));
755  extern void             TkBTreeInsertChars _ANSI_ARGS_((TkTextIndex *indexPtr,  extern void             TkBTreeInsertChars _ANSI_ARGS_((TkTextIndex *indexPtr,
756                              char *string));                              char *string));
757  extern int              TkBTreeLineIndex _ANSI_ARGS_((TkTextLine *linePtr));  extern int              TkBTreeLineIndex _ANSI_ARGS_((TkTextLine *linePtr));
758  extern void             TkBTreeLinkSegment _ANSI_ARGS_((TkTextSegment *segPtr,  extern void             TkBTreeLinkSegment _ANSI_ARGS_((TkTextSegment *segPtr,
759                              TkTextIndex *indexPtr));                              TkTextIndex *indexPtr));
760  extern TkTextLine *     TkBTreeNextLine _ANSI_ARGS_((TkTextLine *linePtr));  extern TkTextLine *     TkBTreeNextLine _ANSI_ARGS_((TkTextLine *linePtr));
761  extern int              TkBTreeNextTag _ANSI_ARGS_((TkTextSearch *searchPtr));  extern int              TkBTreeNextTag _ANSI_ARGS_((TkTextSearch *searchPtr));
762  extern int              TkBTreeNumLines _ANSI_ARGS_((TkTextBTree tree));  extern int              TkBTreeNumLines _ANSI_ARGS_((TkTextBTree tree));
763  extern TkTextLine *     TkBTreePreviousLine _ANSI_ARGS_((TkTextLine *linePtr));  extern TkTextLine *     TkBTreePreviousLine _ANSI_ARGS_((TkTextLine *linePtr));
764  extern int              TkBTreePrevTag _ANSI_ARGS_((TkTextSearch *searchPtr));  extern int              TkBTreePrevTag _ANSI_ARGS_((TkTextSearch *searchPtr));
765  extern void             TkBTreeStartSearch _ANSI_ARGS_((TkTextIndex *index1Ptr,  extern void             TkBTreeStartSearch _ANSI_ARGS_((TkTextIndex *index1Ptr,
766                              TkTextIndex *index2Ptr, TkTextTag *tagPtr,                              TkTextIndex *index2Ptr, TkTextTag *tagPtr,
767                              TkTextSearch *searchPtr));                              TkTextSearch *searchPtr));
768  extern void             TkBTreeStartSearchBack _ANSI_ARGS_((TkTextIndex *index1Ptr,  extern void             TkBTreeStartSearchBack _ANSI_ARGS_((TkTextIndex *index1Ptr,
769                              TkTextIndex *index2Ptr, TkTextTag *tagPtr,                              TkTextIndex *index2Ptr, TkTextTag *tagPtr,
770                              TkTextSearch *searchPtr));                              TkTextSearch *searchPtr));
771  extern void             TkBTreeTag _ANSI_ARGS_((TkTextIndex *index1Ptr,  extern void             TkBTreeTag _ANSI_ARGS_((TkTextIndex *index1Ptr,
772                              TkTextIndex *index2Ptr, TkTextTag *tagPtr,                              TkTextIndex *index2Ptr, TkTextTag *tagPtr,
773                              int add));                              int add));
774  extern void             TkBTreeUnlinkSegment _ANSI_ARGS_((TkTextBTree tree,  extern void             TkBTreeUnlinkSegment _ANSI_ARGS_((TkTextBTree tree,
775                              TkTextSegment *segPtr, TkTextLine *linePtr));                              TkTextSegment *segPtr, TkTextLine *linePtr));
776  extern void             TkTextBindProc _ANSI_ARGS_((ClientData clientData,  extern void             TkTextBindProc _ANSI_ARGS_((ClientData clientData,
777                              XEvent *eventPtr));                              XEvent *eventPtr));
778  extern void             TkTextChanged _ANSI_ARGS_((TkText *textPtr,  extern void             TkTextChanged _ANSI_ARGS_((TkText *textPtr,
779                              TkTextIndex *index1Ptr, TkTextIndex *index2Ptr));                              TkTextIndex *index1Ptr, TkTextIndex *index2Ptr));
780  extern int              TkTextCharBbox _ANSI_ARGS_((TkText *textPtr,  extern int              TkTextCharBbox _ANSI_ARGS_((TkText *textPtr,
781                              TkTextIndex *indexPtr, int *xPtr, int *yPtr,                              TkTextIndex *indexPtr, int *xPtr, int *yPtr,
782                              int *widthPtr, int *heightPtr));                              int *widthPtr, int *heightPtr));
783  extern int              TkTextCharLayoutProc _ANSI_ARGS_((TkText *textPtr,  extern int              TkTextCharLayoutProc _ANSI_ARGS_((TkText *textPtr,
784                              TkTextIndex *indexPtr, TkTextSegment *segPtr,                              TkTextIndex *indexPtr, TkTextSegment *segPtr,
785                              int offset, int maxX, int maxChars, int noBreakYet,                              int offset, int maxX, int maxChars, int noBreakYet,
786                              TkWrapMode wrapMode, TkTextDispChunk *chunkPtr));                              TkWrapMode wrapMode, TkTextDispChunk *chunkPtr));
787  extern void             TkTextCreateDInfo _ANSI_ARGS_((TkText *textPtr));  extern void             TkTextCreateDInfo _ANSI_ARGS_((TkText *textPtr));
788  extern int              TkTextDLineInfo _ANSI_ARGS_((TkText *textPtr,  extern int              TkTextDLineInfo _ANSI_ARGS_((TkText *textPtr,
789                              TkTextIndex *indexPtr, int *xPtr, int *yPtr,                              TkTextIndex *indexPtr, int *xPtr, int *yPtr,
790                              int *widthPtr, int *heightPtr, int *basePtr));                              int *widthPtr, int *heightPtr, int *basePtr));
791  extern TkTextTag *      TkTextCreateTag _ANSI_ARGS_((TkText *textPtr,  extern TkTextTag *      TkTextCreateTag _ANSI_ARGS_((TkText *textPtr,
792                              char *tagName));                              char *tagName));
793  extern void             TkTextFreeDInfo _ANSI_ARGS_((TkText *textPtr));  extern void             TkTextFreeDInfo _ANSI_ARGS_((TkText *textPtr));
794  extern void             TkTextFreeTag _ANSI_ARGS_((TkText *textPtr,  extern void             TkTextFreeTag _ANSI_ARGS_((TkText *textPtr,
795                              TkTextTag *tagPtr));                              TkTextTag *tagPtr));
796  extern int              TkTextGetIndex _ANSI_ARGS_((Tcl_Interp *interp,  extern int              TkTextGetIndex _ANSI_ARGS_((Tcl_Interp *interp,
797                              TkText *textPtr, char *string,                              TkText *textPtr, char *string,
798                              TkTextIndex *indexPtr));                              TkTextIndex *indexPtr));
799  extern TkTextTabArray * TkTextGetTabs _ANSI_ARGS_((Tcl_Interp *interp,  extern TkTextTabArray * TkTextGetTabs _ANSI_ARGS_((Tcl_Interp *interp,
800                              Tk_Window tkwin, char *string));                              Tk_Window tkwin, char *string));
801  extern void             TkTextIndexBackBytes _ANSI_ARGS_((  extern void             TkTextIndexBackBytes _ANSI_ARGS_((
802                              CONST TkTextIndex *srcPtr, int count,                              CONST TkTextIndex *srcPtr, int count,
803                              TkTextIndex *dstPtr));                              TkTextIndex *dstPtr));
804  extern void             TkTextIndexBackChars _ANSI_ARGS_((  extern void             TkTextIndexBackChars _ANSI_ARGS_((
805                              CONST TkTextIndex *srcPtr, int count,                              CONST TkTextIndex *srcPtr, int count,
806                              TkTextIndex *dstPtr));                              TkTextIndex *dstPtr));
807  extern int              TkTextIndexCmp _ANSI_ARGS_((  extern int              TkTextIndexCmp _ANSI_ARGS_((
808                              CONST TkTextIndex *index1Ptr,                              CONST TkTextIndex *index1Ptr,
809                              CONST TkTextIndex *index2Ptr));                              CONST TkTextIndex *index2Ptr));
810  extern void             TkTextIndexForwBytes _ANSI_ARGS_((  extern void             TkTextIndexForwBytes _ANSI_ARGS_((
811                              CONST TkTextIndex *srcPtr, int count,                              CONST TkTextIndex *srcPtr, int count,
812                              TkTextIndex *dstPtr));                              TkTextIndex *dstPtr));
813  extern void             TkTextIndexForwChars _ANSI_ARGS_((  extern void             TkTextIndexForwChars _ANSI_ARGS_((
814                              CONST TkTextIndex *srcPtr, int count,                              CONST TkTextIndex *srcPtr, int count,
815                              TkTextIndex *dstPtr));                              TkTextIndex *dstPtr));
816  extern TkTextSegment *  TkTextIndexToSeg _ANSI_ARGS_((  extern TkTextSegment *  TkTextIndexToSeg _ANSI_ARGS_((
817                              CONST TkTextIndex *indexPtr, int *offsetPtr));                              CONST TkTextIndex *indexPtr, int *offsetPtr));
818  extern void             TkTextInsertDisplayProc _ANSI_ARGS_((  extern void             TkTextInsertDisplayProc _ANSI_ARGS_((
819                              TkTextDispChunk *chunkPtr, int x, int y, int height,                              TkTextDispChunk *chunkPtr, int x, int y, int height,
820                              int baseline, Display *display, Drawable dst,                              int baseline, Display *display, Drawable dst,
821                              int screenY));                              int screenY));
822  extern void             TkTextLostSelection _ANSI_ARGS_((  extern void             TkTextLostSelection _ANSI_ARGS_((
823                              ClientData clientData));                              ClientData clientData));
824  extern TkTextIndex *    TkTextMakeCharIndex _ANSI_ARGS_((TkTextBTree tree,  extern TkTextIndex *    TkTextMakeCharIndex _ANSI_ARGS_((TkTextBTree tree,
825                              int lineIndex, int charIndex,                              int lineIndex, int charIndex,
826                              TkTextIndex *indexPtr));                              TkTextIndex *indexPtr));
827  extern int              TkTextIsElided _ANSI_ARGS_((TkText *textPtr,  extern int              TkTextIsElided _ANSI_ARGS_((TkText *textPtr,
828                              TkTextIndex *indexPtr));                              TkTextIndex *indexPtr));
829  extern TkTextIndex *    TkTextMakeByteIndex _ANSI_ARGS_((TkTextBTree tree,  extern TkTextIndex *    TkTextMakeByteIndex _ANSI_ARGS_((TkTextBTree tree,
830                              int lineIndex, int byteIndex,                              int lineIndex, int byteIndex,
831                              TkTextIndex *indexPtr));                              TkTextIndex *indexPtr));
832  extern int              TkTextMarkCmd _ANSI_ARGS_((TkText *textPtr,  extern int              TkTextMarkCmd _ANSI_ARGS_((TkText *textPtr,
833                              Tcl_Interp *interp, int argc, char **argv));                              Tcl_Interp *interp, int argc, char **argv));
834  extern int              TkTextMarkNameToIndex _ANSI_ARGS_((TkText *textPtr,  extern int              TkTextMarkNameToIndex _ANSI_ARGS_((TkText *textPtr,
835                              char *name, TkTextIndex *indexPtr));                              char *name, TkTextIndex *indexPtr));
836  extern void             TkTextMarkSegToIndex _ANSI_ARGS_((TkText *textPtr,  extern void             TkTextMarkSegToIndex _ANSI_ARGS_((TkText *textPtr,
837                              TkTextSegment *markPtr, TkTextIndex *indexPtr));                              TkTextSegment *markPtr, TkTextIndex *indexPtr));
838  extern void             TkTextEventuallyRepick _ANSI_ARGS_((TkText *textPtr));  extern void             TkTextEventuallyRepick _ANSI_ARGS_((TkText *textPtr));
839  extern void             TkTextPickCurrent _ANSI_ARGS_((TkText *textPtr,  extern void             TkTextPickCurrent _ANSI_ARGS_((TkText *textPtr,
840                              XEvent *eventPtr));                              XEvent *eventPtr));
841  extern void             TkTextPixelIndex _ANSI_ARGS_((TkText *textPtr,  extern void             TkTextPixelIndex _ANSI_ARGS_((TkText *textPtr,
842                              int x, int y, TkTextIndex *indexPtr));                              int x, int y, TkTextIndex *indexPtr));
843  extern void             TkTextPrintIndex _ANSI_ARGS_((  extern void             TkTextPrintIndex _ANSI_ARGS_((
844                              CONST TkTextIndex *indexPtr, char *string));                              CONST TkTextIndex *indexPtr, char *string));
845  extern void             TkTextRedrawRegion _ANSI_ARGS_((TkText *textPtr,  extern void             TkTextRedrawRegion _ANSI_ARGS_((TkText *textPtr,
846                              int x, int y, int width, int height));                              int x, int y, int width, int height));
847  extern void             TkTextRedrawTag _ANSI_ARGS_((TkText *textPtr,  extern void             TkTextRedrawTag _ANSI_ARGS_((TkText *textPtr,
848                              TkTextIndex *index1Ptr, TkTextIndex *index2Ptr,                              TkTextIndex *index1Ptr, TkTextIndex *index2Ptr,
849                              TkTextTag *tagPtr, int withTag));                              TkTextTag *tagPtr, int withTag));
850  extern void             TkTextRelayoutWindow _ANSI_ARGS_((TkText *textPtr));  extern void             TkTextRelayoutWindow _ANSI_ARGS_((TkText *textPtr));
851  extern int              TkTextScanCmd _ANSI_ARGS_((TkText *textPtr,  extern int              TkTextScanCmd _ANSI_ARGS_((TkText *textPtr,
852                              Tcl_Interp *interp, int argc, char **argv));                              Tcl_Interp *interp, int argc, char **argv));
853  extern int              TkTextSeeCmd _ANSI_ARGS_((TkText *textPtr,  extern int              TkTextSeeCmd _ANSI_ARGS_((TkText *textPtr,
854                              Tcl_Interp *interp, int argc, char **argv));                              Tcl_Interp *interp, int argc, char **argv));
855  extern int              TkTextSegToOffset _ANSI_ARGS_((  extern int              TkTextSegToOffset _ANSI_ARGS_((
856                              CONST TkTextSegment *segPtr,                              CONST TkTextSegment *segPtr,
857                              CONST TkTextLine *linePtr));                              CONST TkTextLine *linePtr));
858  extern TkTextSegment *  TkTextSetMark _ANSI_ARGS_((TkText *textPtr, char *name,  extern TkTextSegment *  TkTextSetMark _ANSI_ARGS_((TkText *textPtr, char *name,
859                              TkTextIndex *indexPtr));                              TkTextIndex *indexPtr));
860  extern void             TkTextSetYView _ANSI_ARGS_((TkText *textPtr,  extern void             TkTextSetYView _ANSI_ARGS_((TkText *textPtr,
861                              TkTextIndex *indexPtr, int pickPlace));                              TkTextIndex *indexPtr, int pickPlace));
862  extern int              TkTextTagCmd _ANSI_ARGS_((TkText *textPtr,  extern int              TkTextTagCmd _ANSI_ARGS_((TkText *textPtr,
863                              Tcl_Interp *interp, int argc, char **argv));                              Tcl_Interp *interp, int argc, char **argv));
864  extern int              TkTextImageCmd _ANSI_ARGS_((TkText *textPtr,  extern int              TkTextImageCmd _ANSI_ARGS_((TkText *textPtr,
865                              Tcl_Interp *interp, int argc, char **argv));                              Tcl_Interp *interp, int argc, char **argv));
866  extern int              TkTextImageIndex _ANSI_ARGS_((TkText *textPtr,  extern int              TkTextImageIndex _ANSI_ARGS_((TkText *textPtr,
867                              char *name, TkTextIndex *indexPtr));                              char *name, TkTextIndex *indexPtr));
868  extern int              TkTextWindowCmd _ANSI_ARGS_((TkText *textPtr,  extern int              TkTextWindowCmd _ANSI_ARGS_((TkText *textPtr,
869                              Tcl_Interp *interp, int argc, char **argv));                              Tcl_Interp *interp, int argc, char **argv));
870  extern int              TkTextWindowIndex _ANSI_ARGS_((TkText *textPtr,  extern int              TkTextWindowIndex _ANSI_ARGS_((TkText *textPtr,
871                              char *name, TkTextIndex *indexPtr));                              char *name, TkTextIndex *indexPtr));
872  extern int              TkTextXviewCmd _ANSI_ARGS_((TkText *textPtr,  extern int              TkTextXviewCmd _ANSI_ARGS_((TkText *textPtr,
873                              Tcl_Interp *interp, int argc, char **argv));                              Tcl_Interp *interp, int argc, char **argv));
874  extern int              TkTextYviewCmd _ANSI_ARGS_((TkText *textPtr,  extern int              TkTextYviewCmd _ANSI_ARGS_((TkText *textPtr,
875                              Tcl_Interp *interp, int argc, char **argv));                              Tcl_Interp *interp, int argc, char **argv));
876    
877  # undef TCL_STORAGE_CLASS  # undef TCL_STORAGE_CLASS
878  # define TCL_STORAGE_CLASS DLLIMPORT  # define TCL_STORAGE_CLASS DLLIMPORT
879    
880  #endif /* _TKTEXT */  #endif /* _TKTEXT */
881    
882  /* End of tktext.h */  /* End of tktext.h */
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