textviewer.cc

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/*
    Copyright (C) 1999 Paul Barton-Davis 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

    $Id$
*/

#include <string>
#include <fstream>

#include <gtkmm2ext/textviewer.h>

#include "i18n.h"

using namespace std;
using namespace Gtkmm2ext;
using namespace sigc;

TextViewer::TextViewer (size_t xsize, size_t ysize) :
        Gtk::Window (Gtk::WINDOW_TOPLEVEL),
        Transmitter (Transmitter::Info), /* channel arg is irrelevant */
        dismiss (_("Close"))
{
        set_size_request (xsize, ysize);

        set_title ("Text Viewer");
        set_name ("TextViewer");
        set_resizable (true);
        set_border_width (0);

        vbox1.set_homogeneous (false);
        vbox1.set_spacing (0);
        add (vbox1);
        vbox1.show ();

        vbox2.set_homogeneous (false);
        vbox2.set_spacing (10);
        //vbox2.set_border_width (10);

        vbox1.pack_start (vbox2, true, true, 0);
        vbox2.show ();

        vbox2.pack_start (scrollwin, TRUE, TRUE, 0);
        scrollwin.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_ALWAYS);
        scrollwin.show ();

        etext.set_editable (false);
        etext.set_wrap_mode (Gtk::WRAP_WORD);
        scrollwin.add (etext);
        etext.show ();

        vbox1.pack_start (dismiss, false, false, 0);
        dismiss.show ();

        dismiss.signal_clicked().connect(mem_fun (*this, &TextViewer::signal_released_handler));
}

void
TextViewer::signal_released_handler()
{
        hide();
}

void
TextViewer::insert_file (const string &path)

{
        char buf[1024];
        ifstream f (path.c_str());

        if (!f) {
                return;
        }

        Glib::RefPtr<Gtk::TextBuffer> tb (etext.get_buffer());

        tb->begin_user_action();
        while (f) {
                f.read (buf, sizeof (buf));

                if (f.gcount()) {
                        buf[f.gcount()] = '\0';
                        string foo (buf);
                        tb->insert (tb->end(), foo);
                }
        }
        tb->end_user_action();
}

void
TextViewer::scroll_to_bottom ()

{
        Gtk::Adjustment *adj;

        adj = scrollwin.get_vadjustment();
        adj->set_value (MAX(0,(adj->get_upper() - adj->get_page_size())));
}
        
void
TextViewer::deliver ()

{
        char buf[1024];
        Glib::RefPtr<Gtk::TextBuffer> tb (etext.get_buffer());

        while (!eof()) {
                read (buf, sizeof (buf));
                buf[gcount()] = '\0';
                string foo (buf);
                tb->insert (tb->end(), foo);
        }
        scroll_to_bottom ();
        clear ();
}