mirror of https://github.com/fltk/fltk
264 lines
11 KiB
C++
264 lines
11 KiB
C++
//
|
|
// "$Id$"
|
|
//
|
|
// Header file for Fl_Text_Buffer class.
|
|
//
|
|
// Copyright 2001-2005 by Bill Spitzak and others.
|
|
// Original code Copyright Mark Edel. Permission to distribute under
|
|
// the LGPL for the FLTK library granted by Mark Edel.
|
|
//
|
|
// This library is free software; you can redistribute it and/or
|
|
// modify it under the terms of the GNU Library General Public
|
|
// License as published by the Free Software Foundation; either
|
|
// version 2 of the License, or (at your option) any later version.
|
|
//
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
// Library General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Library General Public
|
|
// License along with this library; if not, write to the Free Software
|
|
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
|
// USA.
|
|
//
|
|
// Please report all bugs and problems on the following page:
|
|
//
|
|
// http://www.fltk.org/str.php
|
|
//
|
|
|
|
#ifndef FL_TEXT_BUFFER_H
|
|
#define FL_TEXT_BUFFER_H
|
|
|
|
/* Maximum length in characters of a tab or control character expansion
|
|
of a single buffer character */
|
|
#define FL_TEXT_MAX_EXP_CHAR_LEN 20
|
|
|
|
#include "Fl_Export.H"
|
|
|
|
class FL_EXPORT Fl_Text_Selection {
|
|
friend class Fl_Text_Buffer;
|
|
|
|
public:
|
|
void set(int start, int end);
|
|
void set_rectangular(int start, int end, int rectStart, int rectEnd);
|
|
void update(int pos, int nDeleted, int nInserted);
|
|
char rectangular() { return mRectangular; }
|
|
int start() { return mStart; }
|
|
int end() { return mEnd; }
|
|
int rect_start() { return mRectStart; }
|
|
int rect_end() { return mRectEnd; }
|
|
char selected() { return mSelected; }
|
|
void selected(char b) { mSelected = b; }
|
|
int includes(int pos, int lineStartPos, int dispIndex);
|
|
int position(int* start, int* end);
|
|
int position(int* start, int* end, int* isRect, int* rectStart, int* rectEnd);
|
|
|
|
|
|
protected:
|
|
char mSelected;
|
|
char mRectangular;
|
|
int mStart;
|
|
int mEnd;
|
|
int mRectStart;
|
|
int mRectEnd;
|
|
};
|
|
|
|
typedef void (*Fl_Text_Modify_Cb)(int pos, int nInserted, int nDeleted,
|
|
int nRestyled, const char* deletedText,
|
|
void* cbArg);
|
|
typedef void (*Fl_Text_Predelete_Cb)(int pos, int nDeleted, void* cbArg);
|
|
|
|
class FL_EXPORT Fl_Text_Buffer {
|
|
public:
|
|
Fl_Text_Buffer(int requestedSize = 0);
|
|
~Fl_Text_Buffer();
|
|
|
|
int length() { return mLength; }
|
|
char* text();
|
|
void text(const char* text);
|
|
char* text_range(int start, int end);
|
|
char character(int pos);
|
|
char* text_in_rectangle(int start, int end, int rectStart, int rectEnd);
|
|
void insert(int pos, const char* text);
|
|
void append(const char* t) { insert(length(), t); }
|
|
void remove(int start, int end);
|
|
void replace(int start, int end, const char *text);
|
|
void copy(Fl_Text_Buffer* fromBuf, int fromStart, int fromEnd, int toPos);
|
|
int undo(int *cp=0);
|
|
void canUndo(char flag=1);
|
|
int insertfile(const char *file, int pos, int buflen = 128*1024);
|
|
int appendfile(const char *file, int buflen = 128*1024)
|
|
{ return insertfile(file, length(), buflen); }
|
|
int loadfile(const char *file, int buflen = 128*1024)
|
|
{ select(0, length()); remove_selection(); return appendfile(file, buflen); }
|
|
int outputfile(const char *file, int start, int end, int buflen = 128*1024);
|
|
int savefile(const char *file, int buflen = 128*1024)
|
|
{ return outputfile(file, 0, length(), buflen); }
|
|
|
|
void insert_column(int column, int startPos, const char* text,
|
|
int* charsInserted, int* charsDeleted);
|
|
|
|
void replace_rectangular(int start, int end, int rectStart, int rectEnd,
|
|
const char* text);
|
|
|
|
void overlay_rectangular(int startPos, int rectStart, int rectEnd,
|
|
const char* text, int* charsInserted,
|
|
int* charsDeleted);
|
|
|
|
void remove_rectangular(int start, int end, int rectStart, int rectEnd);
|
|
void clear_rectangular(int start, int end, int rectStart, int rectEnd);
|
|
int tab_distance() { return mTabDist; }
|
|
void tab_distance(int tabDist);
|
|
void select(int start, int end);
|
|
int selected() { return mPrimary.selected(); }
|
|
void unselect();
|
|
void select_rectangular(int start, int end, int rectStart, int rectEnd);
|
|
int selection_position(int* start, int* end);
|
|
|
|
int selection_position(int* start, int* end, int* isRect, int* rectStart,
|
|
int* rectEnd);
|
|
|
|
char* selection_text();
|
|
void remove_selection();
|
|
void replace_selection(const char* text);
|
|
void secondary_select(int start, int end);
|
|
int secondary_selected() { return mSecondary.selected(); }
|
|
void secondary_unselect();
|
|
|
|
void secondary_select_rectangular(int start, int end, int rectStart,
|
|
int rectEnd);
|
|
|
|
int secondary_selection_position(int* start, int* end);
|
|
int secondary_selection_position(int* start, int* end, int* isRect,
|
|
int* rectStart, int* rectEnd);
|
|
|
|
char* secondary_selection_text();
|
|
void remove_secondary_selection();
|
|
void replace_secondary_selection(const char* text);
|
|
void highlight(int start, int end);
|
|
int highlight() { return mHighlight.selected(); }
|
|
void unhighlight();
|
|
void highlight_rectangular(int start, int end, int rectStart, int rectEnd);
|
|
|
|
int highlight_position(int* start, int* end);
|
|
int highlight_position(int* start, int* end, int* isRect, int* rectStart,
|
|
int* rectEnd);
|
|
|
|
char* highlight_text();
|
|
void add_modify_callback(Fl_Text_Modify_Cb bufModifiedCB, void* cbArg);
|
|
void remove_modify_callback(Fl_Text_Modify_Cb bufModifiedCB, void* cbArg);
|
|
|
|
void call_modify_callbacks() { call_modify_callbacks(0, 0, 0, 0, 0); }
|
|
|
|
void add_predelete_callback(Fl_Text_Predelete_Cb bufPredelCB, void* cbArg);
|
|
void remove_predelete_callback(Fl_Text_Predelete_Cb predelCB, void* cbArg);
|
|
|
|
void call_predelete_callbacks() { call_predelete_callbacks(0, 0); }
|
|
|
|
char* line_text(int pos);
|
|
int line_start(int pos);
|
|
int line_end(int pos);
|
|
int word_start(int pos);
|
|
int word_end(int pos);
|
|
int expand_character(int pos, int indent, char *outStr);
|
|
|
|
static int expand_character(char c, int indent, char* outStr, int tabDist,
|
|
char nullSubsChar);
|
|
|
|
static int character_width(char c, int indent, int tabDist, char nullSubsChar);
|
|
int count_displayed_characters(int lineStartPos, int targetPos);
|
|
int skip_displayed_characters(int lineStartPos, int nChars);
|
|
int count_lines(int startPos, int endPos);
|
|
int skip_lines(int startPos, int nLines);
|
|
int rewind_lines(int startPos, int nLines);
|
|
int findchar_forward(int startPos, char searchChar, int* foundPos);
|
|
int findchar_backward(int startPos, char searchChar, int* foundPos);
|
|
int findchars_forward(int startPos, const char* searchChars, int* foundPos);
|
|
int findchars_backward(int startPos, const char* searchChars, int* foundPos);
|
|
|
|
int search_forward(int startPos, const char* searchString, int* foundPos,
|
|
int matchCase = 0);
|
|
|
|
int search_backward(int startPos, const char* searchString, int* foundPos,
|
|
int matchCase = 0);
|
|
|
|
int substitute_null_characters(char* string, int length);
|
|
void unsubstitute_null_characters(char* string);
|
|
char null_substitution_character() { return mNullSubsChar; }
|
|
Fl_Text_Selection* primary_selection() { return &mPrimary; }
|
|
Fl_Text_Selection* secondary_selection() { return &mSecondary; }
|
|
Fl_Text_Selection* highlight_selection() { return &mHighlight; }
|
|
|
|
protected:
|
|
void call_modify_callbacks(int pos, int nDeleted, int nInserted,
|
|
int nRestyled, const char* deletedText);
|
|
void call_predelete_callbacks(int pos, int nDeleted);
|
|
|
|
int insert_(int pos, const char* text);
|
|
void remove_(int start, int end);
|
|
|
|
void remove_rectangular_(int start, int end, int rectStart, int rectEnd,
|
|
int* replaceLen, int* endPos);
|
|
|
|
void insert_column_(int column, int startPos, const char* insText,
|
|
int* nDeleted, int* nInserted, int* endPos);
|
|
|
|
void overlay_rectangular_(int startPos, int rectStart, int rectEnd,
|
|
const char* insText, int* nDeleted,
|
|
int* nInserted, int* endPos);
|
|
|
|
void redisplay_selection(Fl_Text_Selection* oldSelection,
|
|
Fl_Text_Selection* newSelection);
|
|
|
|
void move_gap(int pos);
|
|
void reallocate_with_gap(int newGapStart, int newGapLen);
|
|
char* selection_text_(Fl_Text_Selection* sel);
|
|
void remove_selection_(Fl_Text_Selection* sel);
|
|
void replace_selection_(Fl_Text_Selection* sel, const char* text);
|
|
|
|
void rectangular_selection_boundaries(int lineStartPos, int rectStart,
|
|
int rectEnd, int* selStart,
|
|
int* selEnd);
|
|
|
|
void update_selections(int pos, int nDeleted, int nInserted);
|
|
|
|
Fl_Text_Selection mPrimary; /* highlighted areas */
|
|
Fl_Text_Selection mSecondary;
|
|
Fl_Text_Selection mHighlight;
|
|
int mLength; /* length of the text in the buffer (the length
|
|
of the buffer itself must be calculated:
|
|
gapEnd - gapStart + length) */
|
|
char* mBuf; /* allocated memory where the text is stored */
|
|
int mGapStart; /* points to the first character of the gap */
|
|
int mGapEnd; /* points to the first char after the gap */
|
|
// The hardware tab distance used by all displays for this buffer,
|
|
// and used in computing offsets for rectangular selection operations.
|
|
int mTabDist; /* equiv. number of characters in a tab */
|
|
int mUseTabs; /* True if buffer routines are allowed to use
|
|
tabs for padding in rectangular operations */
|
|
int mNModifyProcs; /* number of modify-redisplay procs attached */
|
|
Fl_Text_Modify_Cb* /* procedures to call when buffer is */
|
|
mNodifyProcs; /* modified to redisplay contents */
|
|
void** mCbArgs; /* caller arguments for modifyProcs above */
|
|
int mNPredeleteProcs; /* number of pre-delete procs attached */
|
|
Fl_Text_Predelete_Cb* /* procedure to call before text is deleted */
|
|
mPredeleteProcs; /* from the buffer; at most one is supported. */
|
|
void **mPredeleteCbArgs; /* caller argument for pre-delete proc above */
|
|
int mCursorPosHint; /* hint for reasonable cursor position after
|
|
a buffer modification operation */
|
|
char mNullSubsChar; /* NEdit is based on C null-terminated strings,
|
|
so ascii-nul characters must be substituted
|
|
with something else. This is the else, but
|
|
of course, things get quite messy when you
|
|
use it */
|
|
char mCanUndo; /* if this buffer is used for attributes, it must
|
|
not do any undo calls */
|
|
};
|
|
|
|
#endif
|
|
|
|
//
|
|
// End of "$Id$".
|
|
//
|