mirror of https://github.com/fltk/fltk
142 lines
5.3 KiB
C++
142 lines
5.3 KiB
C++
//
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// "$Id$"
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//
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// Header file for Fl_Text_Editor class.
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//
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// Copyright 2001-2009 by Bill Spitzak and others.
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// Original code Copyright Mark Edel. Permission to distribute under
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// the LGPL for the FLTK library granted by Mark Edel.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA.
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//
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// Please report all bugs and problems on the following page:
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//
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// http://www.fltk.org/str.php
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//
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/* \file
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Fl_Text_Editor widget . */
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#ifndef FL_TEXT_EDITOR_H
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#define FL_TEXT_EDITOR_H
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#include "Fl_Text_Display.H"
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// key will match in any state
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#define FL_TEXT_EDITOR_ANY_STATE (-1L)
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/**
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This is the FLTK text editor widget. It allows the user to
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edit multiple lines of text and supports highlighting and
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scrolling. The buffer that is displayed in the widget is managed
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by the Fl_Text_Buffer
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class.
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*/
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class FL_EXPORT Fl_Text_Editor : public Fl_Text_Display {
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public:
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/** Key function binding callback type */
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typedef int (*Key_Func)(int key, Fl_Text_Editor* editor);
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/** Simple linked list associating a key/state to a function */
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struct Key_Binding {
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int key; ///< the key pressed
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int state; ///< the state of key modifiers
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Key_Func function; ///< associated function
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Key_Binding* next; ///< next key binding in the list
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};
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Fl_Text_Editor(int X, int Y, int W, int H, const char* l = 0);
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~Fl_Text_Editor() { remove_all_key_bindings(); }
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virtual int handle(int e);
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/**
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Sets the current insert mode; if non-zero, new text
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is inserted before the current cursor position. Otherwise, new
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text replaces text at the current cursor position.
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*/
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void insert_mode(int b) { insert_mode_ = b; }
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/**
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Gets the current insert mode; if non-zero, new text
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is inserted before the current cursor position. Otherwise, new
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text replaces text at the current cursor position.
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*/
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int insert_mode() { return insert_mode_; }
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void add_key_binding(int key, int state, Key_Func f, Key_Binding** list);
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/** Adds a key of state "state" with the function "function" */
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void add_key_binding(int key, int state, Key_Func f)
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{ add_key_binding(key, state, f, &key_bindings); }
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void remove_key_binding(int key, int state, Key_Binding** list);
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/** Removes the key binding associated with the key "key" of state "state". */
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void remove_key_binding(int key, int state)
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{ remove_key_binding(key, state, &key_bindings); }
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void remove_all_key_bindings(Key_Binding** list);
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/** Removes all of the key bindings associated with the text editor or list. */
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void remove_all_key_bindings() { remove_all_key_bindings(&key_bindings); }
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void add_default_key_bindings(Key_Binding** list);
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Key_Func bound_key_function(int key, int state, Key_Binding* list);
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/** Returns the function associated with a key binding. */
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Key_Func bound_key_function(int key, int state)
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{ return bound_key_function(key, state, key_bindings); }
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/** Sets the default key function for unassigned keys. */
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void default_key_function(Key_Func f) { default_key_function_ = f; }
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// functions for the built in default bindings
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static int kf_default(int c, Fl_Text_Editor* e);
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static int kf_ignore(int c, Fl_Text_Editor* e);
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static int kf_backspace(int c, Fl_Text_Editor* e);
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static int kf_enter(int c, Fl_Text_Editor* e);
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static int kf_move(int c, Fl_Text_Editor* e);
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static int kf_shift_move(int c, Fl_Text_Editor* e);
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static int kf_ctrl_move(int c, Fl_Text_Editor* e);
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static int kf_c_s_move(int c, Fl_Text_Editor* e);
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static int kf_meta_move(int c, Fl_Text_Editor* e);
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static int kf_m_s_move(int c, Fl_Text_Editor* e);
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static int kf_home(int, Fl_Text_Editor* e);
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static int kf_end(int c, Fl_Text_Editor* e);
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static int kf_left(int c, Fl_Text_Editor* e);
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static int kf_up(int c, Fl_Text_Editor* e);
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static int kf_right(int c, Fl_Text_Editor* e);
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static int kf_down(int c, Fl_Text_Editor* e);
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static int kf_page_up(int c, Fl_Text_Editor* e);
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static int kf_page_down(int c, Fl_Text_Editor* e);
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static int kf_insert(int c, Fl_Text_Editor* e);
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static int kf_delete(int c, Fl_Text_Editor* e);
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static int kf_copy(int c, Fl_Text_Editor* e);
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static int kf_cut(int c, Fl_Text_Editor* e);
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static int kf_paste(int c, Fl_Text_Editor* e);
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static int kf_select_all(int c, Fl_Text_Editor* e);
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static int kf_undo(int c, Fl_Text_Editor* e);
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protected:
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int handle_key();
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void maybe_do_callback();
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#ifndef FL_DOXYGEN
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int insert_mode_;
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Key_Binding* key_bindings;
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static Key_Binding* global_key_bindings;
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Key_Func default_key_function_;
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#endif
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};
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#endif
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//
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// End of "$Id$".
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//
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