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/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tk_base/tktext.h,v 1.1.1.1 2001/06/13 05:08:53 dtashley Exp $ */
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/*
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* tkText.h --
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*
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* Declarations shared among the files that implement text
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* widgets.
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*
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* Copyright (c) 1992-1994 The Regents of the University of California.
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* Copyright (c) 1994-1995 Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*
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* RCS: @(#) $Id: tktext.h,v 1.1.1.1 2001/06/13 05:08:53 dtashley Exp $
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*/
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#ifndef _TKTEXT
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#define _TKTEXT
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#ifndef _TK
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#include "tk.h"
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#endif
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#ifdef BUILD_tk
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# undef TCL_STORAGE_CLASS
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# define TCL_STORAGE_CLASS DLLEXPORT
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#endif
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/*
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* Opaque types for structures whose guts are only needed by a single
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* file:
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*/
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typedef struct TkTextBTree *TkTextBTree;
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/*
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* The data structure below defines a single line of text (from newline
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* to newline, not necessarily what appears on one line of the screen).
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*/
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typedef struct TkTextLine {
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struct Node *parentPtr; /* Pointer to parent node containing
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* line. */
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struct TkTextLine *nextPtr; /* Next in linked list of lines with
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* same parent node in B-tree. NULL
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* means end of list. */
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struct TkTextSegment *segPtr; /* First in ordered list of segments
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* that make up the line. */
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} TkTextLine;
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/*
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* -----------------------------------------------------------------------
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* Segments: each line is divided into one or more segments, where each
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* segment is one of several things, such as a group of characters, a
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* tag toggle, a mark, or an embedded widget. Each segment starts with
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* a standard header followed by a body that varies from type to type.
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* -----------------------------------------------------------------------
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*/
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/*
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* The data structure below defines the body of a segment that represents
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* a tag toggle. There is one of these structures at both the beginning
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* and end of each tagged range.
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*/
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typedef struct TkTextToggle {
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struct TkTextTag *tagPtr; /* Tag that starts or ends here. */
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int inNodeCounts; /* 1 means this toggle has been
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* accounted for in node toggle
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* counts; 0 means it hasn't, yet. */
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} TkTextToggle;
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/*
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* The data structure below defines line segments that represent
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* marks. There is one of these for each mark in the text.
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*/
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typedef struct TkTextMark {
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struct TkText *textPtr; /* Overall information about text
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* widget. */
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TkTextLine *linePtr; /* Line structure that contains the
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* segment. */
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Tcl_HashEntry *hPtr; /* Pointer to hash table entry for mark
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* (in textPtr->markTable). */
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} TkTextMark;
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/*
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* A structure of the following type holds information for each window
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* embedded in a text widget. This information is only used by the
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* file tkTextWind.c
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*/
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typedef struct TkTextEmbWindow {
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struct TkText *textPtr; /* Information about the overall text
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* widget. */
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TkTextLine *linePtr; /* Line structure that contains this
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* window. */
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Tk_Window tkwin; /* Window for this segment. NULL
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* means that the window hasn't
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* been created yet. */
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char *create; /* Script to create window on-demand.
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* NULL means no such script.
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* Malloc-ed. */
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int align; /* How to align window in vertical
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* space. See definitions in
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* tkTextWind.c. */
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int padX, padY; /* Padding to leave around each side
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* of window, in pixels. */
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int stretch; /* Should window stretch to fill
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* vertical space of line (except for
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* pady)? 0 or 1. */
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int chunkCount; /* Number of display chunks that
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* refer to this window. */
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int displayed; /* Non-zero means that the window
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* has been displayed on the screen
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* recently. */
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} TkTextEmbWindow;
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/*
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* A structure of the following type holds information for each image
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* embedded in a text widget. This information is only used by the
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* file tkTextImage.c
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*/
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typedef struct TkTextEmbImage {
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struct TkText *textPtr; /* Information about the overall text
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* widget. */
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TkTextLine *linePtr; /* Line structure that contains this
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* image. */
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char *imageString; /* Name of the image for this segment */
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char *imageName; /* Name used by text widget to identify
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* this image. May be unique-ified */
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char *name; /* Name used in the hash table.
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* used by "image names" to identify
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* this instance of the image */
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Tk_Image image; /* Image for this segment. NULL
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* means that the image hasn't
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* been created yet. */
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int align; /* How to align image in vertical
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* space. See definitions in
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* tkTextImage.c. */
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int padX, padY; /* Padding to leave around each side
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* of image, in pixels. */
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int chunkCount; /* Number of display chunks that
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* refer to this image. */
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} TkTextEmbImage;
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/*
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* The data structure below defines line segments.
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*/
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typedef struct TkTextSegment {
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struct Tk_SegType *typePtr; /* Pointer to record describing
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* segment's type. */
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struct TkTextSegment *nextPtr; /* Next in list of segments for this
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* line, or NULL for end of list. */
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int size; /* Size of this segment (# of bytes
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* of index space it occupies). */
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union {
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char chars[4]; /* Characters that make up character
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* info. Actual length varies to
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* hold as many characters as needed.*/
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TkTextToggle toggle; /* Information about tag toggle. */
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TkTextMark mark; /* Information about mark. */
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TkTextEmbWindow ew; /* Information about embedded
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* window. */
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TkTextEmbImage ei; /* Information about embedded
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* image. */
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} body;
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} TkTextSegment;
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/*
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* Data structures of the type defined below are used during the
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* execution of Tcl commands to keep track of various interesting
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* places in a text. An index is only valid up until the next
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* modification to the character structure of the b-tree so they
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* can't be retained across Tcl commands. However, mods to marks
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* or tags don't invalidate indices.
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*/
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typedef struct TkTextIndex {
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TkTextBTree tree; /* Tree containing desired position. */
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TkTextLine *linePtr; /* Pointer to line containing position
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* of interest. */
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int byteIndex; /* Index within line of desired
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* character (0 means first one). */
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} TkTextIndex;
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/*
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* Types for procedure pointers stored in TkTextDispChunk strutures:
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*/
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typedef struct TkTextDispChunk TkTextDispChunk;
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typedef void Tk_ChunkDisplayProc _ANSI_ARGS_((
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TkTextDispChunk *chunkPtr, int x, int y,
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int height, int baseline, Display *display,
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Drawable dst, int screenY));
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typedef void Tk_ChunkUndisplayProc _ANSI_ARGS_((
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struct TkText *textPtr,
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TkTextDispChunk *chunkPtr));
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typedef int Tk_ChunkMeasureProc _ANSI_ARGS_((
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TkTextDispChunk *chunkPtr, int x));
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typedef void Tk_ChunkBboxProc _ANSI_ARGS_((
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TkTextDispChunk *chunkPtr, int index, int y,
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int lineHeight, int baseline, int *xPtr,
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int *yPtr, int *widthPtr, int *heightPtr));
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/*
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* The structure below represents a chunk of stuff that is displayed
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* together on the screen. This structure is allocated and freed by
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* generic display code but most of its fields are filled in by
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* segment-type-specific code.
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*/
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struct TkTextDispChunk {
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/*
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* The fields below are set by the type-independent code before
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* calling the segment-type-specific layoutProc. They should not
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* be modified by segment-type-specific code.
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*/
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int x; /* X position of chunk, in pixels.
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* This position is measured from the
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* left edge of the logical line,
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* not from the left edge of the
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* window (i.e. it doesn't change
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* under horizontal scrolling). */
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struct TkTextDispChunk *nextPtr; /* Next chunk in the display line
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* or NULL for the end of the list. */
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struct TextStyle *stylePtr; /* Display information, known only
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* to tkTextDisp.c. */
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/*
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* The fields below are set by the layoutProc that creates the
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* chunk.
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*/
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Tk_ChunkDisplayProc *displayProc; /* Procedure to invoke to draw this
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* chunk on the display or an
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* off-screen pixmap. */
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Tk_ChunkUndisplayProc *undisplayProc;
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/* Procedure to invoke when segment
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* ceases to be displayed on screen
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* anymore. */
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Tk_ChunkMeasureProc *measureProc; /* Procedure to find character under
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* a given x-location. */
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Tk_ChunkBboxProc *bboxProc; /* Procedure to find bounding box
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* of character in chunk. */
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int numBytes; /* Number of bytes that will be
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* displayed in the chunk. */
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int minAscent; /* Minimum space above the baseline
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* needed by this chunk. */
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int minDescent; /* Minimum space below the baseline
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* needed by this chunk. */
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int minHeight; /* Minimum total line height needed
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* by this chunk. */
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int width; /* Width of this chunk, in pixels.
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* Initially set by chunk-specific
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* code, but may be increased to
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* include tab or extra space at end
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* of line. */
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int breakIndex; /* Index within chunk of last
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* acceptable position for a line
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* (break just before this byte index).
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* <= 0 means don't break during or
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* immediately after this chunk. */
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ClientData clientData; /* Additional information for use
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| 270 |
* of displayProc and undisplayProc. */
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};
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/*
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* One data structure of the following type is used for each tag in a
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* text widget. These structures are kept in textPtr->tagTable and
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* referred to in other structures.
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*/
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typedef enum { TEXT_WRAPMODE_NULL, TEXT_WRAPMODE_NONE,
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TEXT_WRAPMODE_CHAR, TEXT_WRAPMODE_WORD
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} TkWrapMode;
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| 283 |
extern Tk_CustomOption textWrapModeOption;
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| 285 |
typedef struct TkTextTag {
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char *name; /* Name of this tag. This field is actually
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* a pointer to the key from the entry in
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* textPtr->tagTable, so it needn't be freed
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* explicitly. */
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int priority; /* Priority of this tag within widget. 0
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* means lowest priority. Exactly one tag
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* has each integer value between 0 and
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* numTags-1. */
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struct Node *tagRootPtr; /* Pointer into the B-Tree at the lowest
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* node that completely dominates the ranges
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* of text occupied by the tag. At this
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* node there is no information about the
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* tag. One or more children of the node
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* do contain information about the tag. */
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int toggleCount; /* Total number of tag toggles */
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/*
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* Information for displaying text with this tag. The information
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* belows acts as an override on information specified by lower-priority
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* tags. If no value is specified, then the next-lower-priority tag
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* on the text determins the value. The text widget itself provides
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* defaults if no tag specifies an override.
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*/
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Tk_3DBorder border; /* Used for drawing background. NULL means
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* no value specified here. */
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char *bdString; /* -borderwidth option string (malloc-ed).
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* NULL means option not specified. */
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int borderWidth; /* Width of 3-D border for background. */
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char *reliefString; /* -relief option string (malloc-ed).
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| 316 |
* NULL means option not specified. */
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int relief; /* 3-D relief for background. */
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Pixmap bgStipple; /* Stipple bitmap for background. None
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* means no value specified here. */
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| 320 |
XColor *fgColor; /* Foreground color for text. NULL means
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* no value specified here. */
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Tk_Font tkfont; /* Font for displaying text. NULL means
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| 323 |
* no value specified here. */
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Pixmap fgStipple; /* Stipple bitmap for text and other
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* foreground stuff. None means no value
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| 326 |
* specified here.*/
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char *justifyString; /* -justify option string (malloc-ed).
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| 328 |
* NULL means option not specified. */
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Tk_Justify justify; /* How to justify text: TK_JUSTIFY_LEFT,
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* TK_JUSTIFY_RIGHT, or TK_JUSTIFY_CENTER.
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* Only valid if justifyString is non-NULL. */
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char *lMargin1String; /* -lmargin1 option string (malloc-ed).
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* NULL means option not specified. */
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int lMargin1; /* Left margin for first display line of
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* each text line, in pixels. Only valid
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| 336 |
* if lMargin1String is non-NULL. */
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char *lMargin2String; /* -lmargin2 option string (malloc-ed).
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| 338 |
* NULL means option not specified. */
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int lMargin2; /* Left margin for second and later display
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| 340 |
* lines of each text line, in pixels. Only
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| 341 |
* valid if lMargin2String is non-NULL. */
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| 342 |
char *offsetString; /* -offset option string (malloc-ed).
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| 343 |
* NULL means option not specified. */
|
| 344 |
int offset; /* Vertical offset of text's baseline from
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| 345 |
* baseline of line. Used for superscripts
|
| 346 |
* and subscripts. Only valid if
|
| 347 |
* offsetString is non-NULL. */
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| 348 |
char *overstrikeString; /* -overstrike option string (malloc-ed).
|
| 349 |
* NULL means option not specified. */
|
| 350 |
int overstrike; /* Non-zero means draw horizontal line through
|
| 351 |
* middle of text. Only valid if
|
| 352 |
* overstrikeString is non-NULL. */
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| 353 |
char *rMarginString; /* -rmargin option string (malloc-ed).
|
| 354 |
* NULL means option not specified. */
|
| 355 |
int rMargin; /* Right margin for text, in pixels. Only
|
| 356 |
* valid if rMarginString is non-NULL. */
|
| 357 |
char *spacing1String; /* -spacing1 option string (malloc-ed).
|
| 358 |
* NULL means option not specified. */
|
| 359 |
int spacing1; /* Extra spacing above first display
|
| 360 |
* line for text line. Only valid if
|
| 361 |
* spacing1String is non-NULL. */
|
| 362 |
char *spacing2String; /* -spacing2 option string (malloc-ed).
|
| 363 |
* NULL means option not specified. */
|
| 364 |
int spacing2; /* Extra spacing between display
|
| 365 |
* lines for the same text line. Only valid
|
| 366 |
* if spacing2String is non-NULL. */
|
| 367 |
char *spacing3String; /* -spacing2 option string (malloc-ed).
|
| 368 |
* NULL means option not specified. */
|
| 369 |
int spacing3; /* Extra spacing below last display
|
| 370 |
* line for text line. Only valid if
|
| 371 |
* spacing3String is non-NULL. */
|
| 372 |
char *tabString; /* -tabs option string (malloc-ed).
|
| 373 |
* NULL means option not specified. */
|
| 374 |
struct TkTextTabArray *tabArrayPtr;
|
| 375 |
/* Info about tabs for tag (malloc-ed)
|
| 376 |
* or NULL. Corresponds to tabString. */
|
| 377 |
char *underlineString; /* -underline option string (malloc-ed).
|
| 378 |
* NULL means option not specified. */
|
| 379 |
int underline; /* Non-zero means draw underline underneath
|
| 380 |
* text. Only valid if underlineString is
|
| 381 |
* non-NULL. */
|
| 382 |
TkWrapMode wrapMode; /* How to handle wrap-around for this tag.
|
| 383 |
* Must be TEXT_WRAPMODE_CHAR,
|
| 384 |
* TEXT_WRAPMODE_NONE, TEXT_WRAPMODE_WORD,
|
| 385 |
* or TEXT_WRAPMODE_NULL to use wrapmode for
|
| 386 |
* whole widget. */
|
| 387 |
char *elideString; /* -elide option string (malloc-ed).
|
| 388 |
* NULL means option not specified. */
|
| 389 |
int elide; /* Non-zero means that data under this tag
|
| 390 |
* should not be displayed. */
|
| 391 |
int affectsDisplay; /* Non-zero means that this tag affects the
|
| 392 |
* way information is displayed on the screen
|
| 393 |
* (so need to redisplay if tag changes). */
|
| 394 |
} TkTextTag;
|
| 395 |
|
| 396 |
#define TK_TAG_AFFECTS_DISPLAY 0x1
|
| 397 |
#define TK_TAG_UNDERLINE 0x2
|
| 398 |
#define TK_TAG_JUSTIFY 0x4
|
| 399 |
#define TK_TAG_OFFSET 0x10
|
| 400 |
|
| 401 |
/*
|
| 402 |
* 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
|
| 404 |
* tkTextBTree.c should ever modify any of the fields in these structures,
|
| 405 |
* but it's OK to use them for read-only information.
|
| 406 |
*/
|
| 407 |
|
| 408 |
typedef struct TkTextSearch {
|
| 409 |
TkTextIndex curIndex; /* Position of last tag transition
|
| 410 |
* returned by TkBTreeNextTag, or
|
| 411 |
* index of start of segment
|
| 412 |
* containing starting position for
|
| 413 |
* search if TkBTreeNextTag hasn't
|
| 414 |
* been called yet, or same as
|
| 415 |
* stopIndex if search is over. */
|
| 416 |
TkTextSegment *segPtr; /* Actual tag segment returned by last
|
| 417 |
* call to TkBTreeNextTag, or NULL if
|
| 418 |
* TkBTreeNextTag hasn't returned
|
| 419 |
* anything yet. */
|
| 420 |
TkTextSegment *nextPtr; /* Where to resume search in next
|
| 421 |
* call to TkBTreeNextTag. */
|
| 422 |
TkTextSegment *lastPtr; /* Stop search before just before
|
| 423 |
* considering this segment. */
|
| 424 |
TkTextTag *tagPtr; /* Tag to search for (or tag found, if
|
| 425 |
* allTags is non-zero). */
|
| 426 |
int linesLeft; /* Lines left to search (including
|
| 427 |
* curIndex and stopIndex). When
|
| 428 |
* this becomes <= 0 the search is
|
| 429 |
* over. */
|
| 430 |
int allTags; /* Non-zero means ignore tag check:
|
| 431 |
* search for transitions on all
|
| 432 |
* tags. */
|
| 433 |
} TkTextSearch;
|
| 434 |
|
| 435 |
/*
|
| 436 |
* The following data structure describes a single tab stop.
|
| 437 |
*/
|
| 438 |
|
| 439 |
typedef enum {LEFT, RIGHT, CENTER, NUMERIC} TkTextTabAlign;
|
| 440 |
|
| 441 |
typedef struct TkTextTab {
|
| 442 |
int location; /* Offset in pixels of this tab stop
|
| 443 |
* from the left margin (lmargin2) of
|
| 444 |
* the text. */
|
| 445 |
TkTextTabAlign alignment; /* Where the tab stop appears relative
|
| 446 |
* to the text. */
|
| 447 |
} TkTextTab;
|
| 448 |
|
| 449 |
typedef struct TkTextTabArray {
|
| 450 |
int numTabs; /* Number of tab stops. */
|
| 451 |
TkTextTab tabs[1]; /* Array of tabs. The actual size
|
| 452 |
* will be numTabs. THIS FIELD MUST
|
| 453 |
* BE THE LAST IN THE STRUCTURE. */
|
| 454 |
} TkTextTabArray;
|
| 455 |
|
| 456 |
/*
|
| 457 |
* A data structure of the following type is kept for each text widget that
|
| 458 |
* currently exists for this process:
|
| 459 |
*/
|
| 460 |
|
| 461 |
typedef struct TkText {
|
| 462 |
Tk_Window tkwin; /* Window that embodies the text. NULL
|
| 463 |
* means that the window has been destroyed
|
| 464 |
* but the data structures haven't yet been
|
| 465 |
* cleaned up.*/
|
| 466 |
Display *display; /* Display for widget. Needed, among other
|
| 467 |
* things, to allow resources to be freed
|
| 468 |
* even after tkwin has gone away. */
|
| 469 |
Tcl_Interp *interp; /* Interpreter associated with widget. Used
|
| 470 |
* to delete widget command. */
|
| 471 |
Tcl_Command widgetCmd; /* Token for text's widget command. */
|
| 472 |
TkTextBTree tree; /* B-tree representation of text and tags for
|
| 473 |
* widget. */
|
| 474 |
Tcl_HashTable tagTable; /* Hash table that maps from tag names to
|
| 475 |
* pointers to TkTextTag structures. */
|
| 476 |
int numTags; /* Number of tags currently defined for
|
| 477 |
* widget; needed to keep track of
|
| 478 |
* priorities. */
|
| 479 |
Tcl_HashTable markTable; /* Hash table that maps from mark names to
|
| 480 |
* pointers to mark segments. */
|
| 481 |
Tcl_HashTable windowTable; /* Hash table that maps from window names
|
| 482 |
* to pointers to window segments. If a
|
| 483 |
* window segment doesn't yet have an
|
| 484 |
* associated window, there is no entry for
|
| 485 |
* it here. */
|
| 486 |
Tcl_HashTable imageTable; /* Hash table that maps from image names
|
| 487 |
* to pointers to image segments. If an
|
| 488 |
* image segment doesn't yet have an
|
| 489 |
* associated image, there is no entry for
|
| 490 |
* it here. */
|
| 491 |
int state; /* Either STATE_NORMAL or STATE_DISABLED. A
|
| 492 |
* text widget is read-only when disabled. */
|
| 493 |
|
| 494 |
/*
|
| 495 |
* Default information for displaying (may be overridden by tags
|
| 496 |
* applied to ranges of characters).
|
| 497 |
*/
|
| 498 |
|
| 499 |
Tk_3DBorder border; /* Structure used to draw 3-D border and
|
| 500 |
* default background. */
|
| 501 |
int borderWidth; /* Width of 3-D border to draw around entire
|
| 502 |
* widget. */
|
| 503 |
int padX, padY; /* Padding between text and window border. */
|
| 504 |
int relief; /* 3-d effect for border around entire
|
| 505 |
* widget: TK_RELIEF_RAISED etc. */
|
| 506 |
int highlightWidth; /* Width in pixels of highlight to draw
|
| 507 |
* around widget when it has the focus.
|
| 508 |
* <= 0 means don't draw a highlight. */
|
| 509 |
XColor *highlightBgColorPtr;
|
| 510 |
/* Color for drawing traversal highlight
|
| 511 |
* area when highlight is off. */
|
| 512 |
XColor *highlightColorPtr; /* Color for drawing traversal highlight. */
|
| 513 |
Tk_Cursor cursor; /* Current cursor for window, or None. */
|
| 514 |
XColor *fgColor; /* Default foreground color for text. */
|
| 515 |
Tk_Font tkfont; /* Default font for displaying text. */
|
| 516 |
int charWidth; /* Width of average character in default
|
| 517 |
* font. */
|
| 518 |
int spacing1; /* Default extra spacing above first display
|
| 519 |
* line for each text line. */
|
| 520 |
int spacing2; /* Default extra spacing between display lines
|
| 521 |
* for the same text line. */
|
| 522 |
int spacing3; /* Default extra spacing below last display
|
| 523 |
* line for each text line. */
|
| 524 |
char *tabOptionString; /* Value of -tabs option string (malloc'ed). */
|
| 525 |
TkTextTabArray *tabArrayPtr;
|
| 526 |
/* Information about tab stops (malloc'ed).
|
| 527 |
* NULL means perform default tabbing
|
| 528 |
* behavior. */
|
| 529 |
|
| 530 |
/*
|
| 531 |
* Additional information used for displaying:
|
| 532 |
*/
|
| 533 |
|
| 534 |
TkWrapMode wrapMode; /* How to handle wrap-around. Must be
|
| 535 |
* TEXT_WRAPMODE_CHAR, TEXT_WRAPMODE_NONE, or
|
| 536 |
* TEXT_WRAPMODE_WORD. */
|
| 537 |
int width, height; /* Desired dimensions for window, measured
|
| 538 |
* in characters. */
|
| 539 |
int setGrid; /* Non-zero means pass gridding information
|
| 540 |
* to window manager. */
|
| 541 |
int prevWidth, prevHeight; /* Last known dimensions of window; used to
|
| 542 |
* detect changes in size. */
|
| 543 |
TkTextIndex topIndex; /* Identifies first character in top display
|
| 544 |
* line of window. */
|
| 545 |
struct TextDInfo *dInfoPtr; /* Information maintained by tkTextDisp.c. */
|
| 546 |
|
| 547 |
/*
|
| 548 |
* Information related to selection.
|
| 549 |
*/
|
| 550 |
|
| 551 |
TkTextTag *selTagPtr; /* Pointer to "sel" tag. Used to tell when
|
| 552 |
* a new selection has been made. */
|
| 553 |
Tk_3DBorder selBorder; /* Border and background for selected
|
| 554 |
* characters. This is a copy of information
|
| 555 |
* in *cursorTagPtr, so it shouldn't be
|
| 556 |
* explicitly freed. */
|
| 557 |
char *selBdString; /* Value of -selectborderwidth option, or NULL
|
| 558 |
* if not specified (malloc'ed). */
|
| 559 |
XColor *selFgColorPtr; /* Foreground color for selected text.
|
| 560 |
* This is a copy of information in
|
| 561 |
* *cursorTagPtr, so it shouldn't be
|
| 562 |
* explicitly freed. */
|
| 563 |
int exportSelection; /* Non-zero means tie "sel" tag to X
|
| 564 |
* selection. */
|
| 565 |
TkTextIndex selIndex; /* Used during multi-pass selection retrievals.
|
| 566 |
* This index identifies the next character
|
| 567 |
* to be returned from the selection. */
|
| 568 |
int abortSelections; /* Set to 1 whenever the text is modified
|
| 569 |
* in a way that interferes with selection
|
| 570 |
* retrieval: used to abort incremental
|
| 571 |
* selection retrievals. */
|
| 572 |
int selOffset; /* Offset in selection corresponding to
|
| 573 |
* selLine and selCh. -1 means neither
|
| 574 |
* this information nor selIndex is of any
|
| 575 |
* use. */
|
| 576 |
|
| 577 |
/*
|
| 578 |
* Information related to insertion cursor:
|
| 579 |
*/
|
| 580 |
|
| 581 |
TkTextSegment *insertMarkPtr;
|
| 582 |
/* Points to segment for "insert" mark. */
|
| 583 |
Tk_3DBorder insertBorder; /* Used to draw vertical bar for insertion
|
| 584 |
* cursor. */
|
| 585 |
int insertWidth; /* Total width of insert cursor. */
|
| 586 |
int insertBorderWidth; /* Width of 3-D border around insert cursor. */
|
| 587 |
int insertOnTime; /* Number of milliseconds cursor should spend
|
| 588 |
* in "on" state for each blink. */
|
| 589 |
int insertOffTime; /* Number of milliseconds cursor should spend
|
| 590 |
* in "off" state for each blink. */
|
| 591 |
Tcl_TimerToken insertBlinkHandler;
|
| 592 |
/* Timer handler used to blink cursor on and
|
| 593 |
* off. */
|
| 594 |
|
| 595 |
/*
|
| 596 |
* Information used for event bindings associated with tags:
|
| 597 |
*/
|
| 598 |
|
| 599 |
Tk_BindingTable bindingTable;
|
| 600 |
/* Table of all bindings currently defined
|
| 601 |
* for this widget. NULL means that no
|
| 602 |
* bindings exist, so the table hasn't been
|
| 603 |
* created. Each "object" used for this
|
| 604 |
* table is the address of a tag. */
|
| 605 |
TkTextSegment *currentMarkPtr;
|
| 606 |
/* Pointer to segment for "current" mark,
|
| 607 |
* or NULL if none. */
|
| 608 |
XEvent pickEvent; /* The event from which the current character
|
| 609 |
* was chosen. Must be saved so that we
|
| 610 |
* can repick after modifications to the
|
| 611 |
* text. */
|
| 612 |
int numCurTags; /* Number of tags associated with character
|
| 613 |
* at current mark. */
|
| 614 |
TkTextTag **curTagArrayPtr; /* Pointer to array of tags for current
|
| 615 |
* mark, or NULL if none. */
|
| 616 |
|
| 617 |
/*
|
| 618 |
* Miscellaneous additional information:
|
| 619 |
*/
|
| 620 |
|
| 621 |
char *takeFocus; /* Value of -takeFocus option; not used in
|
| 622 |
* the C code, but used by keyboard traversal
|
| 623 |
* scripts. Malloc'ed, but may be NULL. */
|
| 624 |
char *xScrollCmd; /* Prefix of command to issue to update
|
| 625 |
* horizontal scrollbar when view changes. */
|
| 626 |
char *yScrollCmd; /* Prefix of command to issue to update
|
| 627 |
* vertical scrollbar when view changes. */
|
| 628 |
int flags; /* Miscellaneous flags; see below for
|
| 629 |
* definitions. */
|
| 630 |
} TkText;
|
| 631 |
|
| 632 |
/*
|
| 633 |
* Flag values for TkText records:
|
| 634 |
*
|
| 635 |
* GOT_SELECTION: Non-zero means we've already claimed the
|
| 636 |
* selection.
|
| 637 |
* INSERT_ON: Non-zero means insertion cursor should be
|
| 638 |
* displayed on screen.
|
| 639 |
* GOT_FOCUS: Non-zero means this window has the input
|
| 640 |
* focus.
|
| 641 |
* BUTTON_DOWN: 1 means that a mouse button is currently
|
| 642 |
* down; this is used to implement grabs
|
| 643 |
* for the duration of button presses.
|
| 644 |
* UPDATE_SCROLLBARS: Non-zero means scrollbar(s) should be updated
|
| 645 |
* during next redisplay operation.
|
| 646 |
*/
|
| 647 |
|
| 648 |
#define GOT_SELECTION 1
|
| 649 |
#define INSERT_ON 2
|
| 650 |
#define GOT_FOCUS 4
|
| 651 |
#define BUTTON_DOWN 8
|
| 652 |
#define UPDATE_SCROLLBARS 0x10
|
| 653 |
#define NEED_REPICK 0x20
|
| 654 |
|
| 655 |
/*
|
| 656 |
* Records of the following type define segment types in terms of
|
| 657 |
* a collection of procedures that may be called to manipulate
|
| 658 |
* segments of that type.
|
| 659 |
*/
|
| 660 |
|
| 661 |
typedef TkTextSegment * Tk_SegSplitProc _ANSI_ARGS_((
|
| 662 |
struct TkTextSegment *segPtr, int index));
|
| 663 |
typedef int Tk_SegDeleteProc _ANSI_ARGS_((
|
| 664 |
struct TkTextSegment *segPtr,
|
| 665 |
TkTextLine *linePtr, int treeGone));
|
| 666 |
typedef TkTextSegment * Tk_SegCleanupProc _ANSI_ARGS_((
|
| 667 |
struct TkTextSegment *segPtr, TkTextLine *linePtr));
|
| 668 |
typedef void Tk_SegLineChangeProc _ANSI_ARGS_((
|
| 669 |
struct TkTextSegment *segPtr, TkTextLine *linePtr));
|
| 670 |
typedef int Tk_SegLayoutProc _ANSI_ARGS_((struct TkText *textPtr,
|
| 671 |
struct TkTextIndex *indexPtr, TkTextSegment *segPtr,
|
| 672 |
int offset, int maxX, int maxChars,
|
| 673 |
int noCharsYet, TkWrapMode wrapMode,
|
| 674 |
struct TkTextDispChunk *chunkPtr));
|
| 675 |
typedef void Tk_SegCheckProc _ANSI_ARGS_((TkTextSegment *segPtr,
|
| 676 |
TkTextLine *linePtr));
|
| 677 |
|
| 678 |
typedef struct Tk_SegType {
|
| 679 |
char *name; /* Name of this kind of segment. */
|
| 680 |
int leftGravity; /* If a segment has zero size (e.g. a
|
| 681 |
* mark or tag toggle), does it
|
| 682 |
* attach to character to its left
|
| 683 |
* or right? 1 means left, 0 means
|
| 684 |
* right. */
|
| 685 |
Tk_SegSplitProc *splitProc; /* Procedure to split large segment
|
| 686 |
* into two smaller ones. */
|
| 687 |
Tk_SegDeleteProc *deleteProc; /* Procedure to call to delete
|
| 688 |
* segment. */
|
| 689 |
Tk_SegCleanupProc *cleanupProc; /* After any change to a line, this
|
| 690 |
* procedure is invoked for all
|
| 691 |
* segments left in the line to
|
| 692 |
* perform any cleanup they wish
|
| 693 |
* (e.g. joining neighboring
|
| 694 |
* segments). */
|
| 695 |
Tk_SegLineChangeProc *lineChangeProc;
|
| 696 |
/* Invoked when a segment is about
|
| 697 |
* to be moved from its current line
|
| 698 |
* to an earlier line because of
|
| 699 |
* a deletion. The linePtr is that
|
| 700 |
* for the segment's old line.
|
| 701 |
* CleanupProc will be invoked after
|
| 702 |
* the deletion is finished. */
|
| 703 |
Tk_SegLayoutProc *layoutProc; /* Returns size information when
|
| 704 |
* figuring out what to display in
|
| 705 |
* window. */
|
| 706 |
Tk_SegCheckProc *checkProc; /* Called during consistency checks
|
| 707 |
* to check internal consistency of
|
| 708 |
* segment. */
|
| 709 |
} Tk_SegType;
|
| 710 |
|
| 711 |
/*
|
| 712 |
* 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.
|
| 714 |
*/
|
| 715 |
|
| 716 |
#define TK_END_OF_TEXT 1000000
|
| 717 |
|
| 718 |
/*
|
| 719 |
* The following definition specifies the maximum number of characters
|
| 720 |
* needed in a string to hold a position specifier.
|
| 721 |
*/
|
| 722 |
|
| 723 |
#define TK_POS_CHARS 30
|
| 724 |
|
| 725 |
/*
|
| 726 |
* Declarations for variables shared among the text-related files:
|
| 727 |
*/
|
| 728 |
|
| 729 |
extern int tkBTreeDebug;
|
| 730 |
extern int tkTextDebug;
|
| 731 |
extern Tk_SegType tkTextCharType;
|
| 732 |
extern Tk_SegType tkTextLeftMarkType;
|
| 733 |
extern Tk_SegType tkTextRightMarkType;
|
| 734 |
extern Tk_SegType tkTextToggleOnType;
|
| 735 |
extern Tk_SegType tkTextToggleOffType;
|
| 736 |
|
| 737 |
/*
|
| 738 |
* 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):
|
| 740 |
*/
|
| 741 |
|
| 742 |
extern int TkBTreeCharTagged _ANSI_ARGS_((TkTextIndex *indexPtr,
|
| 743 |
TkTextTag *tagPtr));
|
| 744 |
extern void TkBTreeCheck _ANSI_ARGS_((TkTextBTree tree));
|
| 745 |
extern int TkBTreeCharsInLine _ANSI_ARGS_((TkTextLine *linePtr));
|
| 746 |
extern int TkBTreeBytesInLine _ANSI_ARGS_((TkTextLine *linePtr));
|
| 747 |
extern TkTextBTree TkBTreeCreate _ANSI_ARGS_((TkText *textPtr));
|
| 748 |
extern void TkBTreeDestroy _ANSI_ARGS_((TkTextBTree tree));
|
| 749 |
extern void TkBTreeDeleteChars _ANSI_ARGS_((TkTextIndex *index1Ptr,
|
| 750 |
TkTextIndex *index2Ptr));
|
| 751 |
extern TkTextLine * TkBTreeFindLine _ANSI_ARGS_((TkTextBTree tree,
|
| 752 |
int line));
|
| 753 |
extern TkTextTag ** TkBTreeGetTags _ANSI_ARGS_((TkTextIndex *indexPtr,
|
| 754 |
int *numTagsPtr));
|
| 755 |
extern void TkBTreeInsertChars _ANSI_ARGS_((TkTextIndex *indexPtr,
|
| 756 |
char *string));
|
| 757 |
extern int TkBTreeLineIndex _ANSI_ARGS_((TkTextLine *linePtr));
|
| 758 |
extern void TkBTreeLinkSegment _ANSI_ARGS_((TkTextSegment *segPtr,
|
| 759 |
TkTextIndex *indexPtr));
|
| 760 |
extern TkTextLine * TkBTreeNextLine _ANSI_ARGS_((TkTextLine *linePtr));
|
| 761 |
extern int TkBTreeNextTag _ANSI_ARGS_((TkTextSearch *searchPtr));
|
| 762 |
extern int TkBTreeNumLines _ANSI_ARGS_((TkTextBTree tree));
|
| 763 |
extern TkTextLine * TkBTreePreviousLine _ANSI_ARGS_((TkTextLine *linePtr));
|
| 764 |
extern int TkBTreePrevTag _ANSI_ARGS_((TkTextSearch *searchPtr));
|
| 765 |
extern void TkBTreeStartSearch _ANSI_ARGS_((TkTextIndex *index1Ptr,
|
| 766 |
TkTextIndex *index2Ptr, TkTextTag *tagPtr,
|
| 767 |
TkTextSearch *searchPtr));
|
| 768 |
extern void TkBTreeStartSearchBack _ANSI_ARGS_((TkTextIndex *index1Ptr,
|
| 769 |
TkTextIndex *index2Ptr, TkTextTag *tagPtr,
|
| 770 |
TkTextSearch *searchPtr));
|
| 771 |
extern void TkBTreeTag _ANSI_ARGS_((TkTextIndex *index1Ptr,
|
| 772 |
TkTextIndex *index2Ptr, TkTextTag *tagPtr,
|
| 773 |
int add));
|
| 774 |
extern void TkBTreeUnlinkSegment _ANSI_ARGS_((TkTextBTree tree,
|
| 775 |
TkTextSegment *segPtr, TkTextLine *linePtr));
|
| 776 |
extern void TkTextBindProc _ANSI_ARGS_((ClientData clientData,
|
| 777 |
XEvent *eventPtr));
|
| 778 |
extern void TkTextChanged _ANSI_ARGS_((TkText *textPtr,
|
| 779 |
TkTextIndex *index1Ptr, TkTextIndex *index2Ptr));
|
| 780 |
extern int TkTextCharBbox _ANSI_ARGS_((TkText *textPtr,
|
| 781 |
TkTextIndex *indexPtr, int *xPtr, int *yPtr,
|
| 782 |
int *widthPtr, int *heightPtr));
|
| 783 |
extern int TkTextCharLayoutProc _ANSI_ARGS_((TkText *textPtr,
|
| 784 |
TkTextIndex *indexPtr, TkTextSegment *segPtr,
|
| 785 |
int offset, int maxX, int maxChars, int noBreakYet,
|
| 786 |
TkWrapMode wrapMode, TkTextDispChunk *chunkPtr));
|
| 787 |
extern void TkTextCreateDInfo _ANSI_ARGS_((TkText *textPtr));
|
| 788 |
extern int TkTextDLineInfo _ANSI_ARGS_((TkText *textPtr,
|
| 789 |
TkTextIndex *indexPtr, int *xPtr, int *yPtr,
|
| 790 |
int *widthPtr, int *heightPtr, int *basePtr));
|
| 791 |
extern TkTextTag * TkTextCreateTag _ANSI_ARGS_((TkText *textPtr,
|
| 792 |
char *tagName));
|
| 793 |
extern void TkTextFreeDInfo _ANSI_ARGS_((TkText *textPtr));
|
| 794 |
extern void TkTextFreeTag _ANSI_ARGS_((TkText *textPtr,
|
| 795 |
TkTextTag *tagPtr));
|
| 796 |
extern int TkTextGetIndex _ANSI_ARGS_((Tcl_Interp *interp,
|
| 797 |
TkText *textPtr, char *string,
|
| 798 |
TkTextIndex *indexPtr));
|
| 799 |
extern TkTextTabArray * TkTextGetTabs _ANSI_ARGS_((Tcl_Interp *interp,
|
| 800 |
Tk_Window tkwin, char *string));
|
| 801 |
extern void TkTextIndexBackBytes _ANSI_ARGS_((
|
| 802 |
CONST TkTextIndex *srcPtr, int count,
|
| 803 |
TkTextIndex *dstPtr));
|
| 804 |
extern void TkTextIndexBackChars _ANSI_ARGS_((
|
| 805 |
CONST TkTextIndex *srcPtr, int count,
|
| 806 |
TkTextIndex *dstPtr));
|
| 807 |
extern int TkTextIndexCmp _ANSI_ARGS_((
|
| 808 |
CONST TkTextIndex *index1Ptr,
|
| 809 |
CONST TkTextIndex *index2Ptr));
|
| 810 |
extern void TkTextIndexForwBytes _ANSI_ARGS_((
|
| 811 |
CONST TkTextIndex *srcPtr, int count,
|
| 812 |
TkTextIndex *dstPtr));
|
| 813 |
extern void TkTextIndexForwChars _ANSI_ARGS_((
|
| 814 |
CONST TkTextIndex *srcPtr, int count,
|
| 815 |
TkTextIndex *dstPtr));
|
| 816 |
extern TkTextSegment * TkTextIndexToSeg _ANSI_ARGS_((
|
| 817 |
CONST TkTextIndex *indexPtr, int *offsetPtr));
|
| 818 |
extern void TkTextInsertDisplayProc _ANSI_ARGS_((
|
| 819 |
TkTextDispChunk *chunkPtr, int x, int y, int height,
|
| 820 |
int baseline, Display *display, Drawable dst,
|
| 821 |
int screenY));
|
| 822 |
extern void TkTextLostSelection _ANSI_ARGS_((
|
| 823 |
ClientData clientData));
|
| 824 |
extern TkTextIndex * TkTextMakeCharIndex _ANSI_ARGS_((TkTextBTree tree,
|
| 825 |
int lineIndex, int charIndex,
|
| 826 |
TkTextIndex *indexPtr));
|
| 827 |
extern int TkTextIsElided _ANSI_ARGS_((TkText *textPtr,
|
| 828 |
TkTextIndex *indexPtr));
|
| 829 |
extern TkTextIndex * TkTextMakeByteIndex _ANSI_ARGS_((TkTextBTree tree,
|
| 830 |
int lineIndex, int byteIndex,
|
| 831 |
TkTextIndex *indexPtr));
|
| 832 |
extern int TkTextMarkCmd _ANSI_ARGS_((TkText *textPtr,
|
| 833 |
Tcl_Interp *interp, int argc, char **argv));
|
| 834 |
extern int TkTextMarkNameToIndex _ANSI_ARGS_((TkText *textPtr,
|
| 835 |
char *name, TkTextIndex *indexPtr));
|
| 836 |
extern void TkTextMarkSegToIndex _ANSI_ARGS_((TkText *textPtr,
|
| 837 |
TkTextSegment *markPtr, TkTextIndex *indexPtr));
|
| 838 |
extern void TkTextEventuallyRepick _ANSI_ARGS_((TkText *textPtr));
|
| 839 |
extern void TkTextPickCurrent _ANSI_ARGS_((TkText *textPtr,
|
| 840 |
XEvent *eventPtr));
|
| 841 |
extern void TkTextPixelIndex _ANSI_ARGS_((TkText *textPtr,
|
| 842 |
int x, int y, TkTextIndex *indexPtr));
|
| 843 |
extern void TkTextPrintIndex _ANSI_ARGS_((
|
| 844 |
CONST TkTextIndex *indexPtr, char *string));
|
| 845 |
extern void TkTextRedrawRegion _ANSI_ARGS_((TkText *textPtr,
|
| 846 |
int x, int y, int width, int height));
|
| 847 |
extern void TkTextRedrawTag _ANSI_ARGS_((TkText *textPtr,
|
| 848 |
TkTextIndex *index1Ptr, TkTextIndex *index2Ptr,
|
| 849 |
TkTextTag *tagPtr, int withTag));
|
| 850 |
extern void TkTextRelayoutWindow _ANSI_ARGS_((TkText *textPtr));
|
| 851 |
extern int TkTextScanCmd _ANSI_ARGS_((TkText *textPtr,
|
| 852 |
Tcl_Interp *interp, int argc, char **argv));
|
| 853 |
extern int TkTextSeeCmd _ANSI_ARGS_((TkText *textPtr,
|
| 854 |
Tcl_Interp *interp, int argc, char **argv));
|
| 855 |
extern int TkTextSegToOffset _ANSI_ARGS_((
|
| 856 |
CONST TkTextSegment *segPtr,
|
| 857 |
CONST TkTextLine *linePtr));
|
| 858 |
extern TkTextSegment * TkTextSetMark _ANSI_ARGS_((TkText *textPtr, char *name,
|
| 859 |
TkTextIndex *indexPtr));
|
| 860 |
extern void TkTextSetYView _ANSI_ARGS_((TkText *textPtr,
|
| 861 |
TkTextIndex *indexPtr, int pickPlace));
|
| 862 |
extern int TkTextTagCmd _ANSI_ARGS_((TkText *textPtr,
|
| 863 |
Tcl_Interp *interp, int argc, char **argv));
|
| 864 |
extern int TkTextImageCmd _ANSI_ARGS_((TkText *textPtr,
|
| 865 |
Tcl_Interp *interp, int argc, char **argv));
|
| 866 |
extern int TkTextImageIndex _ANSI_ARGS_((TkText *textPtr,
|
| 867 |
char *name, TkTextIndex *indexPtr));
|
| 868 |
extern int TkTextWindowCmd _ANSI_ARGS_((TkText *textPtr,
|
| 869 |
Tcl_Interp *interp, int argc, char **argv));
|
| 870 |
extern int TkTextWindowIndex _ANSI_ARGS_((TkText *textPtr,
|
| 871 |
char *name, TkTextIndex *indexPtr));
|
| 872 |
extern int TkTextXviewCmd _ANSI_ARGS_((TkText *textPtr,
|
| 873 |
Tcl_Interp *interp, int argc, char **argv));
|
| 874 |
extern int TkTextYviewCmd _ANSI_ARGS_((TkText *textPtr,
|
| 875 |
Tcl_Interp *interp, int argc, char **argv));
|
| 876 |
|
| 877 |
# undef TCL_STORAGE_CLASS
|
| 878 |
# define TCL_STORAGE_CLASS DLLIMPORT
|
| 879 |
|
| 880 |
#endif /* _TKTEXT */
|
| 881 |
|
| 882 |
|
| 883 |
/* $History: tkText.h $
|
| 884 |
*
|
| 885 |
* ***************** Version 1 *****************
|
| 886 |
* User: Dtashley Date: 1/02/01 Time: 3:08a
|
| 887 |
* Created in $/IjuScripter, IjuConsole/Source/Tk Base
|
| 888 |
* Initial check-in.
|
| 889 |
*/
|
| 890 |
|
| 891 |
/* End of TKTEXT.H */ |
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