1c399af444
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@4288 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
486 lines
15 KiB
C++
486 lines
15 KiB
C++
//
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// "$Id$"
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//
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// Copyright 2001-2005 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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#include <stdio.h>
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#include <stdlib.h>
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#include "flstring.h"
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#include <ctype.h>
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#include <FL/Fl.H>
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#include <FL/Fl_Text_Editor.H>
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#include <FL/fl_ask.H>
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Fl_Text_Editor::Fl_Text_Editor(int X, int Y, int W, int H, const char* l)
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: Fl_Text_Display(X, Y, W, H, l) {
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mCursorOn = 1;
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insert_mode_ = 1;
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key_bindings = 0;
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// handle the default key bindings
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add_default_key_bindings(&key_bindings);
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// handle everything else
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default_key_function(kf_default);
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}
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Fl_Text_Editor::Key_Binding* Fl_Text_Editor::global_key_bindings = 0;
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// These are the default key bindings every widget should start with
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static struct {
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int key;
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int state;
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Fl_Text_Editor::Key_Func func;
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} default_key_bindings[] = {
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{ FL_Escape, FL_TEXT_EDITOR_ANY_STATE, Fl_Text_Editor::kf_ignore },
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{ FL_Enter, FL_TEXT_EDITOR_ANY_STATE, Fl_Text_Editor::kf_enter },
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{ FL_KP_Enter, FL_TEXT_EDITOR_ANY_STATE, Fl_Text_Editor::kf_enter },
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{ FL_BackSpace, FL_TEXT_EDITOR_ANY_STATE, Fl_Text_Editor::kf_backspace },
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{ FL_Insert, FL_TEXT_EDITOR_ANY_STATE, Fl_Text_Editor::kf_insert },
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{ FL_Delete, FL_TEXT_EDITOR_ANY_STATE, Fl_Text_Editor::kf_delete },
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{ FL_Home, 0, Fl_Text_Editor::kf_move },
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{ FL_End, 0, Fl_Text_Editor::kf_move },
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{ FL_Left, 0, Fl_Text_Editor::kf_move },
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{ FL_Up, 0, Fl_Text_Editor::kf_move },
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{ FL_Right, 0, Fl_Text_Editor::kf_move },
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{ FL_Down, 0, Fl_Text_Editor::kf_move },
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{ FL_Page_Up, 0, Fl_Text_Editor::kf_move },
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{ FL_Page_Down, 0, Fl_Text_Editor::kf_move },
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{ FL_Home, FL_SHIFT, Fl_Text_Editor::kf_shift_move },
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{ FL_End, FL_SHIFT, Fl_Text_Editor::kf_shift_move },
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{ FL_Left, FL_SHIFT, Fl_Text_Editor::kf_shift_move },
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{ FL_Up, FL_SHIFT, Fl_Text_Editor::kf_shift_move },
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{ FL_Right, FL_SHIFT, Fl_Text_Editor::kf_shift_move },
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{ FL_Down, FL_SHIFT, Fl_Text_Editor::kf_shift_move },
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{ FL_Page_Up, FL_SHIFT, Fl_Text_Editor::kf_shift_move },
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{ FL_Page_Down, FL_SHIFT, Fl_Text_Editor::kf_shift_move },
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{ FL_Home, FL_CTRL, Fl_Text_Editor::kf_ctrl_move },
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{ FL_End, FL_CTRL, Fl_Text_Editor::kf_ctrl_move },
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{ FL_Left, FL_CTRL, Fl_Text_Editor::kf_ctrl_move },
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{ FL_Up, FL_CTRL, Fl_Text_Editor::kf_ctrl_move },
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{ FL_Right, FL_CTRL, Fl_Text_Editor::kf_ctrl_move },
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{ FL_Down, FL_CTRL, Fl_Text_Editor::kf_ctrl_move },
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{ FL_Page_Up, FL_CTRL, Fl_Text_Editor::kf_ctrl_move },
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{ FL_Page_Down, FL_CTRL, Fl_Text_Editor::kf_ctrl_move },
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{ FL_Home, FL_CTRL|FL_SHIFT, Fl_Text_Editor::kf_c_s_move },
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{ FL_End, FL_CTRL|FL_SHIFT, Fl_Text_Editor::kf_c_s_move },
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{ FL_Left, FL_CTRL|FL_SHIFT, Fl_Text_Editor::kf_c_s_move },
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{ FL_Up, FL_CTRL|FL_SHIFT, Fl_Text_Editor::kf_c_s_move },
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{ FL_Right, FL_CTRL|FL_SHIFT, Fl_Text_Editor::kf_c_s_move },
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{ FL_Down, FL_CTRL|FL_SHIFT, Fl_Text_Editor::kf_c_s_move },
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{ FL_Page_Up, FL_CTRL|FL_SHIFT, Fl_Text_Editor::kf_c_s_move },
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{ FL_Page_Down, FL_CTRL|FL_SHIFT, Fl_Text_Editor::kf_c_s_move },
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//{ FL_Clear, 0, Fl_Text_Editor::delete_to_eol },
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{ 'z', FL_CTRL, Fl_Text_Editor::kf_undo },
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{ '/', FL_CTRL, Fl_Text_Editor::kf_undo },
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{ 'x', FL_CTRL, Fl_Text_Editor::kf_cut },
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{ FL_Delete, FL_SHIFT, Fl_Text_Editor::kf_cut },
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{ 'c', FL_CTRL, Fl_Text_Editor::kf_copy },
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{ FL_Insert, FL_CTRL, Fl_Text_Editor::kf_copy },
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{ 'v', FL_CTRL, Fl_Text_Editor::kf_paste },
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{ FL_Insert, FL_SHIFT, Fl_Text_Editor::kf_paste },
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{ 'a', FL_CTRL, Fl_Text_Editor::kf_select_all },
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#ifdef __APPLE__
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// Define CMD+key accelerators...
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{ 'z', FL_COMMAND, Fl_Text_Editor::kf_undo },
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{ 'x', FL_COMMAND, Fl_Text_Editor::kf_cut },
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{ 'c', FL_COMMAND, Fl_Text_Editor::kf_copy },
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{ 'v', FL_COMMAND, Fl_Text_Editor::kf_paste },
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{ 'a', FL_COMMAND, Fl_Text_Editor::kf_select_all },
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#endif // __APPLE__
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{ 0, 0, 0 }
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};
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void Fl_Text_Editor::add_default_key_bindings(Key_Binding** list) {
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for (int i = 0; default_key_bindings[i].key; i++) {
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add_key_binding(default_key_bindings[i].key,
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default_key_bindings[i].state,
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default_key_bindings[i].func,
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list);
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}
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}
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Fl_Text_Editor::Key_Func
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Fl_Text_Editor::bound_key_function(int key, int state, Key_Binding* list) {
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Key_Binding* cur;
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for (cur = list; cur; cur = cur->next)
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if (cur->key == key)
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if (cur->state == FL_TEXT_EDITOR_ANY_STATE || cur->state == state)
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break;
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if (!cur) return 0;
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return cur->function;
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}
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void
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Fl_Text_Editor::remove_all_key_bindings(Key_Binding** list) {
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Key_Binding *cur, *next;
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for (cur = *list; cur; cur = next) {
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next = cur->next;
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delete cur;
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}
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*list = 0;
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}
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void
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Fl_Text_Editor::remove_key_binding(int key, int state, Key_Binding** list) {
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Key_Binding *cur, *last = 0;
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for (cur = *list; cur; last = cur, cur = cur->next)
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if (cur->key == key && cur->state == state) break;
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if (!cur) return;
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if (last) last->next = cur->next;
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else *list = cur->next;
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delete cur;
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}
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void
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Fl_Text_Editor::add_key_binding(int key, int state, Key_Func function,
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Key_Binding** list) {
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Key_Binding* kb = new Key_Binding;
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kb->key = key;
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kb->state = state;
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kb->function = function;
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kb->next = *list;
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*list = kb;
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}
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////////////////////////////////////////////////////////////////
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#define NORMAL_INPUT_MOVE 0
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static void kill_selection(Fl_Text_Editor* e) {
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if (e->buffer()->selected()) {
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e->insert_position(e->buffer()->primary_selection()->start());
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e->buffer()->remove_selection();
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}
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}
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int Fl_Text_Editor::kf_default(int c, Fl_Text_Editor* e) {
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if (!c || (!isprint(c) && c != '\t')) return 0;
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char s[2] = "\0";
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s[0] = (char)c;
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kill_selection(e);
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if (e->insert_mode()) e->insert(s);
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else e->overstrike(s);
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e->show_insert_position();
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e->set_changed();
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if (e->when()&FL_WHEN_CHANGED) e->do_callback();
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return 1;
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}
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int Fl_Text_Editor::kf_ignore(int, Fl_Text_Editor*) {
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return 0; // don't handle
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}
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int Fl_Text_Editor::kf_backspace(int, Fl_Text_Editor* e) {
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if (!e->buffer()->selected() && e->move_left())
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e->buffer()->select(e->insert_position(), e->insert_position()+1);
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kill_selection(e);
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e->show_insert_position();
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e->set_changed();
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if (e->when()&FL_WHEN_CHANGED) e->do_callback();
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return 1;
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}
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int Fl_Text_Editor::kf_enter(int, Fl_Text_Editor* e) {
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kill_selection(e);
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e->insert("\n");
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e->show_insert_position();
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e->set_changed();
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if (e->when()&FL_WHEN_CHANGED) e->do_callback();
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return 1;
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}
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extern void fl_text_drag_me(int pos, Fl_Text_Display* d);
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int Fl_Text_Editor::kf_move(int c, Fl_Text_Editor* e) {
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int i;
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int selected = e->buffer()->selected();
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if (!selected)
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e->dragPos = e->insert_position();
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e->buffer()->unselect();
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switch (c) {
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case FL_Home:
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e->insert_position(e->buffer()->line_start(e->insert_position()));
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break;
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case FL_End:
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e->insert_position(e->buffer()->line_end(e->insert_position()));
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break;
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case FL_Left:
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e->move_left();
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break;
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case FL_Right:
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e->move_right();
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break;
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case FL_Up:
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e->move_up();
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break;
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case FL_Down:
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e->move_down();
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break;
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case FL_Page_Up:
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for (i = 0; i < e->mNVisibleLines - 1; i++) e->move_up();
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break;
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case FL_Page_Down:
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for (i = 0; i < e->mNVisibleLines - 1; i++) e->move_down();
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break;
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}
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e->show_insert_position();
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return 1;
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}
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int Fl_Text_Editor::kf_shift_move(int c, Fl_Text_Editor* e) {
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kf_move(c, e);
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fl_text_drag_me(e->insert_position(), e);
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return 1;
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}
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int Fl_Text_Editor::kf_ctrl_move(int c, Fl_Text_Editor* e) {
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if (!e->buffer()->selected())
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e->dragPos = e->insert_position();
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if (c != FL_Up && c != FL_Down) {
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e->buffer()->unselect();
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e->show_insert_position();
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}
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switch (c) {
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case FL_Home:
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e->insert_position(0);
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e->scroll(0, 0);
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break;
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case FL_End:
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e->insert_position(e->buffer()->length());
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e->scroll(e->count_lines(0, e->buffer()->length(), 1), 0);
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break;
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case FL_Left:
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e->previous_word();
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break;
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case FL_Right:
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e->next_word();
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break;
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case FL_Up:
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e->scroll(e->mTopLineNum-1, e->mHorizOffset);
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break;
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case FL_Down:
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e->scroll(e->mTopLineNum+1, e->mHorizOffset);
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break;
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case FL_Page_Up:
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e->insert_position(e->mLineStarts[0]);
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break;
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case FL_Page_Down:
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e->insert_position(e->mLineStarts[e->mNVisibleLines-2]);
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break;
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}
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return 1;
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}
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int Fl_Text_Editor::kf_c_s_move(int c, Fl_Text_Editor* e) {
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kf_ctrl_move(c, e);
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fl_text_drag_me(e->insert_position(), e);
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return 1;
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}
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int Fl_Text_Editor::kf_home(int, Fl_Text_Editor* e) {
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return kf_move(FL_Home, e);
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}
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int Fl_Text_Editor::kf_end(int, Fl_Text_Editor* e) {
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return kf_move(FL_End, e);
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}
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int Fl_Text_Editor::kf_left(int, Fl_Text_Editor* e) {
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return kf_move(FL_Left, e);
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}
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int Fl_Text_Editor::kf_up(int, Fl_Text_Editor* e) {
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return kf_move(FL_Up, e);
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}
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int Fl_Text_Editor::kf_right(int, Fl_Text_Editor* e) {
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return kf_move(FL_Right, e);
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}
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int Fl_Text_Editor::kf_down(int, Fl_Text_Editor* e) {
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return kf_move(FL_Down, e);
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}
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int Fl_Text_Editor::kf_page_up(int, Fl_Text_Editor* e) {
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return kf_move(FL_Page_Up, e);
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}
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int Fl_Text_Editor::kf_page_down(int, Fl_Text_Editor* e) {
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return kf_move(FL_Page_Down, e);
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}
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int Fl_Text_Editor::kf_insert(int, Fl_Text_Editor* e) {
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e->insert_mode(e->insert_mode() ? 0 : 1);
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return 1;
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}
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int Fl_Text_Editor::kf_delete(int, Fl_Text_Editor* e) {
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if (!e->buffer()->selected())
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e->buffer()->select(e->insert_position(), e->insert_position()+1);
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kill_selection(e);
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e->show_insert_position();
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e->set_changed();
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if (e->when()&FL_WHEN_CHANGED) e->do_callback();
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return 1;
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}
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int Fl_Text_Editor::kf_copy(int, Fl_Text_Editor* e) {
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if (!e->buffer()->selected()) return 1;
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const char *copy = e->buffer()->selection_text();
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if (*copy) Fl::copy(copy, strlen(copy), 1);
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free((void*)copy);
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e->show_insert_position();
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return 1;
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}
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int Fl_Text_Editor::kf_cut(int c, Fl_Text_Editor* e) {
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kf_copy(c, e);
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kill_selection(e);
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e->set_changed();
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if (e->when()&FL_WHEN_CHANGED) e->do_callback();
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return 1;
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}
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int Fl_Text_Editor::kf_paste(int, Fl_Text_Editor* e) {
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kill_selection(e);
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Fl::paste(*e, 1);
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e->show_insert_position();
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e->set_changed();
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if (e->when()&FL_WHEN_CHANGED) e->do_callback();
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return 1;
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}
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int Fl_Text_Editor::kf_select_all(int, Fl_Text_Editor* e) {
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e->buffer()->select(0, e->buffer()->length());
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return 1;
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}
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int Fl_Text_Editor::kf_undo(int , Fl_Text_Editor* e) {
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e->buffer()->unselect();
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int crsr;
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int ret = e->buffer()->undo(&crsr);
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e->insert_position(crsr);
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e->show_insert_position();
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e->set_changed();
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if (e->when()&FL_WHEN_CHANGED) e->do_callback();
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return ret;
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}
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int Fl_Text_Editor::handle_key() {
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// Call FLTK's rules to try to turn this into a printing character.
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// This uses the right-hand ctrl key as a "compose prefix" and returns
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// the changes that should be made to the text, as a number of
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// bytes to delete and a string to insert:
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int del;
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if (Fl::compose(del)) {
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if (del) buffer()->select(insert_position()-del, insert_position());
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kill_selection(this);
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if (Fl::event_length()) {
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if (insert_mode()) insert(Fl::event_text());
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else overstrike(Fl::event_text());
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}
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show_insert_position();
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set_changed();
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if (when()&FL_WHEN_CHANGED) do_callback();
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return 1;
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}
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int key = Fl::event_key(), state = Fl::event_state(), c = Fl::event_text()[0];
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state &= FL_SHIFT|FL_CTRL|FL_ALT|FL_META; // only care about these states
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Key_Func f;
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f = bound_key_function(key, state, global_key_bindings);
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if (!f) f = bound_key_function(key, state, key_bindings);
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if (f) return f(key, this);
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if (default_key_function_ && !state) return default_key_function_(c, this);
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return 0;
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}
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void Fl_Text_Editor::maybe_do_callback() {
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// printf("Fl_Text_Editor::maybe_do_callback()\n");
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// printf("changed()=%d, when()=%x\n", changed(), when());
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if (changed() || (when()&FL_WHEN_NOT_CHANGED)) do_callback();
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}
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int Fl_Text_Editor::handle(int event) {
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if (!buffer()) return 0;
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if (event == FL_PUSH && Fl::event_button() == 2) {
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dragType = -1;
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Fl::paste(*this, 0);
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Fl::focus(this);
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set_changed();
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if (when()&FL_WHEN_CHANGED) do_callback();
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return 1;
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}
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switch (event) {
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case FL_FOCUS:
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show_cursor(mCursorOn); // redraws the cursor
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if (buffer()->selected()) redraw(); // Redraw selections...
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Fl::focus(this);
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return 1;
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case FL_UNFOCUS:
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show_cursor(mCursorOn); // redraws the cursor
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if (buffer()->selected()) redraw(); // Redraw selections...
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case FL_HIDE:
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if (when() & FL_WHEN_RELEASE) maybe_do_callback();
|
|
return 1;
|
|
|
|
case FL_KEYBOARD:
|
|
return handle_key();
|
|
|
|
case FL_PASTE:
|
|
if (!Fl::event_text()) {
|
|
fl_beep();
|
|
return 1;
|
|
}
|
|
buffer()->remove_selection();
|
|
if (insert_mode()) insert(Fl::event_text());
|
|
else overstrike(Fl::event_text());
|
|
show_insert_position();
|
|
set_changed();
|
|
if (when()&FL_WHEN_CHANGED) do_callback();
|
|
return 1;
|
|
|
|
case FL_ENTER:
|
|
// MRS: WIN32 only? Need to test!
|
|
// case FL_MOVE:
|
|
show_cursor(mCursorOn);
|
|
return 1;
|
|
}
|
|
|
|
return Fl_Text_Display::handle(event);
|
|
}
|
|
|
|
//
|
|
// End of "$Id$".
|
|
//
|