C++ GetEditable函数代码示例

void wxTextEntry::SetSelection(long from, long to)
{
    // in wx convention, (-1, -1) means the entire range but GTK+ translates -1
    // (or any negative number for that matter) into last position so we need
    // to translate manually
    if ( from == -1 && to == -1 )
        from = 0;

    // for compatibility with MSW, exchange from and to parameters so that the
    // insertion point is set to the start of the selection and not its end as
    // GTK+ does by default
    gtk_editable_select_region(GetEditable(), to, from);

#ifndef __WXGTK3__
    // avoid reported problem with RHEL 5 GTK+ 2.10 where selection is reset by
    // a clipboard callback, see #13277
    if (gtk_check_version(2,12,0))
    {
        GtkEntry* entry = GTK_ENTRY(GetEditable());
        if (to < 0)
            to = entry->text_length;
        entry->selection_bound = to;
    }
#endif
}

bool GroupCell::SetEditableContent(wxString text)
{
  if (GetEditable()) {
    GetEditable()->SetValue(text);
    return true;
  }
  else
    return false;
}

bool wxTextEntry::DoAutoCompleteStrings(const wxArrayString& choices)
{
    GtkEntry* const entry = (GtkEntry*)GetEditable();
    wxCHECK_MSG(GTK_IS_ENTRY(entry), false, "auto completion doesn't work with this control");

    GtkListStore * const store = gtk_list_store_new(1, G_TYPE_STRING);
    GtkTreeIter iter;

#if defined(__INTEL_COMPILER) && 1 /* VDM auto patch */
#   pragma ivdep
#   pragma swp
#   pragma unroll
#   pragma prefetch
#   if 0
#       pragma simd noassert
#   endif
#endif /* VDM auto patch */
    for ( wxArrayString::const_iterator i = choices.begin();
          i != choices.end();
          ++i )
    {
        gtk_list_store_append(store, &iter);
        gtk_list_store_set(store, &iter,
                           0, (const gchar *)i->utf8_str(),
                           -1);
    }

    GtkEntryCompletion * const completion = gtk_entry_completion_new();
    gtk_entry_completion_set_model(completion, GTK_TREE_MODEL(store));
    gtk_entry_completion_set_text_column(completion, 0);
    gtk_entry_set_completion(entry, completion);
    g_object_unref(completion);
    return true;
}

void wxTextEntry::WriteText(const wxString& value)
{
    GtkEditable * const edit = GetEditable();

    // remove the selection if there is one and suppress the text change event
    // generated by this: we only want to generate one event for this change,
    // not two
    {
        EventsSuppressor noevents(this);
        gtk_editable_delete_selection(edit);
    }

    // insert new text at the cursor position
    gint len = gtk_editable_get_position(edit);
    gtk_editable_insert_text
    (
        edit,
        wxGTK_CONV_FONT(value, GetEditableWindow()->GetFont()),
        -1,     // text: length: compute it using strlen()
        &len    // will be updated to position after the text end
    );

    // and move cursor to the end of new text
    gtk_editable_set_position(edit, len);
}

void wxTextEntry::GetSelection(long *from, long *to) const
{
    gint start, end;
    if ( gtk_editable_get_selection_bounds(GetEditable(), &start, &end) )
    {
        // the output must always be in order, although in GTK+ it isn't
        if ( start > end )
        {
            gint tmp = start;
            start = end;
            end = tmp;
        }
    }
    else // no selection
    {
        // for compatibility with MSW return the empty selection at cursor
        start =
        end = GetInsertionPoint();
    }

    if ( from )
        *from = start;

    if ( to )
        *to = end;
}

bool wxTextEntry::DoAutoCompleteStrings(const wxArrayString& choices)
{
    GtkEntry* const entry = (GtkEntry*)GetEditable();
    wxCHECK_MSG(GTK_IS_ENTRY(entry), false, "auto completion doesn't work with this control");

    GtkListStore * const store = gtk_list_store_new(1, G_TYPE_STRING);
    GtkTreeIter iter;

    for ( wxArrayString::const_iterator i = choices.begin();
          i != choices.end();
          ++i )
    {
        gtk_list_store_append(store, &iter);
        gtk_list_store_set(store, &iter,
                           0, (const gchar *)i->utf8_str(),
                           -1);
    }

    GtkEntryCompletion * const completion = gtk_entry_completion_new();
    gtk_entry_completion_set_model(completion, GTK_TREE_MODEL(store));
    gtk_entry_completion_set_text_column(completion, 0);
    gtk_entry_set_completion(entry, completion);
    g_object_unref(completion);
    return true;
}

wxString wxTextEntry::DoGetValue() const
{
    const wxGtkString value(gtk_editable_get_chars(GetEditable(), 0, -1));

    return wxGTK_CONV_BACK_FONT(value,
            const_cast<wxTextEntry *>(this)->GetEditableWindow()->GetFont());
}

long wxTextEntry::GetLastPosition() const
{
    // this can't be implemented for arbitrary GtkEditable so only do it for
    // GtkEntries
    GtkEntry * const entry = GTK_ENTRY(GetEditable());

    return entry ? entry->text_length : - 1;
}

void wxTextEntry::SetMaxLength(unsigned long len)
{
    GtkEntry* const entry = (GtkEntry*)GetEditable();
    if (!GTK_IS_ENTRY(entry))
        return;

    gtk_entry_set_max_length(entry, len);
}

void GroupCell::RemoveOutput()
{
  DestroyOutput();
  ResetSize();
  m_height = GetEditable()->GetHeight();
  m_output = NULL;
  m_lastInOutput = NULL;
  m_appendedCells = NULL;
  m_hide = false;
}

long wxTextEntry::GetLastPosition() const
{
    // this can't be implemented for arbitrary GtkEditable so only do it for
    // GtkEntries
    long pos = -1;
    GtkEntry* entry = (GtkEntry*)GetEditable();
    if (GTK_IS_ENTRY(entry))
        pos = gtk_entry_get_text_length(entry);

    return pos;
}

void wxTextEntry::SetSelection(long from, long to)
{
    // in wx convention, (-1, -1) means the entire range but GTK+ translates -1
    // (or any negative number for that matter) into last position so we need
    // to translate manually
    if ( from == -1 && to == -1 )
        from = 0;

    // for compatibility with MSW, exchange from and to parameters so that the
    // insertion point is set to the start of the selection and not its end as
    // GTK+ does by default
    gtk_editable_select_region(GetEditable(), to, from);
}

void GroupCell::Hide(bool hide) {
  if (IsFoldable())
    return;

  if (m_hide == hide)
    return;
  else
  {
    if (m_hide == false) {
      if ((m_groupType == GC_TYPE_TEXT) || (m_groupType == GC_TYPE_CODE))
        GetEditable()->SetFirstLineOnly(true);
      m_hide = true;
    }
    else {
      if ((m_groupType == GC_TYPE_TEXT) || (m_groupType == GC_TYPE_CODE))
        GetEditable()->SetFirstLineOnly(false);
      m_hide = false;
    }

    ResetSize();
    GetEditable()->ResetSize();
  }
}

wxString GroupCell::ToString()
{
  wxString str;
  if (GetEditable()) {
    str = m_input->ListToString();
    if (m_output != NULL && !m_hide) {
      MathCell *tmp = m_output;
      while (tmp != NULL) {
        if (tmp->ForceBreakLineHere() && str.Length()>0)
          str += wxT("\n");
        str += tmp->ToString();
        tmp = tmp->m_nextToDraw;
      }
    }
  }
  return str;
}

void wxTextEntry::SetInsertionPoint(long pos)
{
    gtk_editable_set_position(GetEditable(), pos);
}