fl_text_editor.cxx

SRI international 发布的OAA框架软件

    case FL_Page_Down:
      for (i = 0; i < e->mNVisibleLines - 1; i++) e->move_down();
      break;
  }
  e->show_insert_position();
  return 1;
}

int Fl_Text_Editor::kf_shift_move(int c, Fl_Text_Editor* e) {
  kf_move(c, e);
  fl_text_drag_me(e->insert_position(), e);
  return 1;
}

int Fl_Text_Editor::kf_ctrl_move(int c, Fl_Text_Editor* e) {
  if (!e->buffer()->selected())
    e->dragPos = e->insert_position();
  if (c != FL_Up && c != FL_Down) {
    e->buffer()->unselect();
    e->show_insert_position();
  }
  switch (c) {
    case FL_Home:
      e->insert_position(0);
      break;
    case FL_End:
      e->insert_position(e->buffer()->length());
      break;
    case FL_Left:
      e->previous_word();
      break;
    case FL_Right:
      e->next_word();
      break;
    case FL_Up:
      e->scroll(e->mTopLineNum-1, e->mHorizOffset);
      break;
    case FL_Down:
      e->scroll(e->mTopLineNum+1, e->mHorizOffset);
      break;
    case FL_Page_Up:
      e->insert_position(e->mLineStarts[0]);
      break;
    case FL_Page_Down:
      e->insert_position(e->mLineStarts[e->mNVisibleLines-2]);
      break;
  }
  return 1;
}

int Fl_Text_Editor::kf_c_s_move(int c, Fl_Text_Editor* e) {
  kf_ctrl_move(c, e);
  fl_text_drag_me(e->insert_position(), e);
  return 1;
}

static int ctrl_a(int, Fl_Text_Editor* e) {
  // make 2+ ^A's in a row toggle select-all:
  int i = e->buffer()->line_start(e->insert_position());
  if (i != e->insert_position())
    return Fl_Text_Editor::kf_move(FL_Home, e);
  else {
    if (e->buffer()->selected())
      e->buffer()->unselect();
    else
      Fl_Text_Editor::kf_select_all(0, e);
  }
  return 1;
}

int Fl_Text_Editor::kf_home(int, Fl_Text_Editor* e) {
    return kf_move(FL_Home, e);
}

int Fl_Text_Editor::kf_end(int, Fl_Text_Editor* e) {
  return kf_move(FL_End, e);
}

int Fl_Text_Editor::kf_left(int, Fl_Text_Editor* e) {
  return kf_move(FL_Left, e);
}

int Fl_Text_Editor::kf_up(int, Fl_Text_Editor* e) {
  return kf_move(FL_Up, e);
}

int Fl_Text_Editor::kf_right(int, Fl_Text_Editor* e) {
  return kf_move(FL_Right, e);
}

int Fl_Text_Editor::kf_down(int, Fl_Text_Editor* e) {
  return kf_move(FL_Down, e);
}

int Fl_Text_Editor::kf_page_up(int, Fl_Text_Editor* e) {
  return kf_move(FL_Page_Up, e);
}

int Fl_Text_Editor::kf_page_down(int, Fl_Text_Editor* e) {
  return kf_move(FL_Page_Down, e);
}


int Fl_Text_Editor::kf_insert(int, Fl_Text_Editor* e) {
  e->insert_mode(e->insert_mode() ? 0 : 1);
  return 1;
}

int Fl_Text_Editor::kf_delete(int, Fl_Text_Editor* e) {
  if (!e->buffer()->selected())
    e->buffer()->select(e->insert_position(), e->insert_position()+1);
  kill_selection(e);
  e->show_insert_position();
  if (e->when()&FL_WHEN_CHANGED) e->do_callback(); else e->set_changed();
  return 1;
}

int Fl_Text_Editor::kf_copy(int, Fl_Text_Editor* e) {
  if (!e->buffer()->selected()) return 1;
  const char *copy = e->buffer()->selection_text();
  if (*copy) Fl::copy(copy, strlen(copy), 1);
  free((void*)copy);
  e->show_insert_position();
  return 1;
}

int Fl_Text_Editor::kf_cut(int c, Fl_Text_Editor* e) {
  kf_copy(c, e);
  kill_selection(e);
  if (e->when()&FL_WHEN_CHANGED) e->do_callback(); else e->set_changed();
  return 1;
}

int Fl_Text_Editor::kf_paste(int, Fl_Text_Editor* e) {
  kill_selection(e);
  Fl::paste(*e, 1);
  e->show_insert_position();
  if (e->when()&FL_WHEN_CHANGED) e->do_callback(); else e->set_changed();
  return 1;
}

int Fl_Text_Editor::kf_select_all(int, Fl_Text_Editor* e) {
  e->buffer()->select(0, e->buffer()->length());
  return 1;
}

int Fl_Text_Editor::kf_undo(int , Fl_Text_Editor* e) {
  e->buffer()->unselect();
  int crsr;
  int ret = e->buffer()->undo(&crsr);
  e->insert_position(crsr);
  e->show_insert_position();
  if (e->when()&FL_WHEN_CHANGED) e->do_callback(); else e->set_changed();
  return ret;
}

int Fl_Text_Editor::handle_key() {

  // Call fltk's rules to try to turn this into a printing character.
  // This uses the right-hand ctrl key as a "compose prefix" and returns
  // the changes that should be made to the text, as a number of
  // bytes to delete and a string to insert:
  int del;
  if (Fl::compose(del)) {
    if (del) buffer()->select(insert_position()-del, insert_position());
    kill_selection(this);
    if (Fl::event_length()) {
      if (insert_mode()) insert(Fl::event_text());
      else overstrike(Fl::event_text());
    }
    show_insert_position();
    return 1;
  }

  int key = Fl::event_key(), state = Fl::event_state(), c = Fl::event_text()[0];
  state &= FL_SHIFT|FL_CTRL|FL_ALT|FL_META; // only care about these states
  Key_Func f;
  f = bound_key_function(key, state, global_key_bindings);
  if (!f) f = bound_key_function(key, state, key_bindings);

  if (f) return f(key, this);
  if (default_key_function_ && !state) return default_key_function_(c, this);
  return 0;
}

void Fl_Text_Editor::maybe_do_callback() {
  if (changed() || (when()&FL_WHEN_NOT_CHANGED)) {
    clear_changed(); do_callback();}
}

int Fl_Text_Editor::handle(int event) {
  if (!buffer()) return 0;

  if (event == FL_PUSH && Fl::event_button() == 2) {
    dragType = -1;
    Fl::paste(*this, 0);
    Fl::focus(this);
    if (when()&FL_WHEN_CHANGED) do_callback(); else set_changed();
    return 1;
  }

  switch (event) {
    case FL_FOCUS:
      show_cursor(mCursorOn); // redraws the cursor
      Fl::focus(this);
      return 1;

    case FL_UNFOCUS:
      show_cursor(mCursorOn); // redraws the cursor
    case FL_HIDE:
      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();
      if (when()&FL_WHEN_CHANGED) do_callback(); else set_changed();
      return 1;

// CET - FIXME - this will clobber the window's current cursor state!
//    case FL_ENTER:
//    case FL_MOVE:
//    case FL_LEAVE:
//      if (Fl::event_inside(text_area)) fl_cursor(FL_CURSOR_INSERT);
//      else fl_cursor(FL_CURSOR_DEFAULT);
  }

  return Fl_Text_Display::handle(event);
}

//
// End of "$Id: Fl_Text_Editor.cxx,v 1.1.1.1 2003/06/03 22:25:44 agno Exp $".
//