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livetrax/gtk2_ardour/library_download_dialog.cc

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/*
* Copyright (C) 2022 Paul Davis <paul@linuxaudiosystems.com>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <cmath>
#include <iostream>
#include <glib/gstdio.h>
#include "pbd/downloader.h"
#include "pbd/inflater.h"
#include "pbd/i18n.h"
#include <glibmm/markup.h>
#include "ardour/rc_configuration.h"
#include "ardour/library.h"
#include "gui_thread.h"
#include "library_download_dialog.h"
#include "ui_config.h"
using namespace PBD;
using namespace ARDOUR;
using std::string;
LibraryDownloadDialog::LibraryDownloadDialog ()
: ArdourDialog (_("Loop Download Manager"), true) /* modal */
, inflater(0)
{
/* pick some vaguely reasonable window size so that we do not just
* grow to show all available rows in the listview
*/
set_size_request (-1, 600);
_model = Gtk::ListStore::create (_columns);
_display.set_model (_model);
_display.append_column (_("Name"), _columns.name);
_display.append_column (_("Author"), _columns.author);
_display.append_column (_("License"), _columns.license);
_display.append_column (_("Size"), _columns.size);
append_install_column ();
append_progress_column ();
_display.set_headers_visible (true);
_display.set_hover_selection (true);
_display.signal_button_press_event().connect (sigc::mem_fun (*this, &LibraryDownloadDialog::display_button_press), false);
scroller.set_policy (Gtk::POLICY_NEVER, Gtk::POLICY_AUTOMATIC);
scroller.add (_display);
Gtk::HBox* h = new Gtk::HBox;
h->set_spacing (8);
h->set_border_width (8);
h->pack_start (scroller);
get_vbox()->set_spacing (8);
get_vbox()->set_border_width (12);
get_vbox()->pack_start (*Gtk::manage (h));
_display.get_selection()->set_mode (Gtk::SELECTION_SINGLE);
_display.get_selection()->signal_changed().connect (sigc::mem_fun (*this, &LibraryDownloadDialog::library_selected));
description_view.set_size_request (-1, 80);
description_view.set_wrap_mode (Gtk::WRAP_WORD);
get_vbox()->pack_start (description_view, Gtk::PACK_SHRINK);
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}
LibraryDownloadDialog::~LibraryDownloadDialog ()
{
delete inflater;
}
void
LibraryDownloadDialog::refill ()
{
ARDOUR::LibraryFetcher lf;
lf.get_descriptions ();
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if (lf.n_descriptions()) {
_model->clear ();
}
lf.foreach_description (boost::bind (&LibraryDownloadDialog::add_library, this, _1));
}
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void
LibraryDownloadDialog::on_show ()
{
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ArdourDialog::on_show ();
refill ();
}
void
LibraryDownloadDialog::library_selected ()
{
if (_display.get_selection()->count_selected_rows() == 0) {
description_view.get_buffer()->set_text (string());
return;
}
Gtk::TreeModel::iterator row = _display.get_selection()->get_selected();
string txt = (*row)[_columns.description];
description_view.get_buffer()->set_text (txt);
}
void
LibraryDownloadDialog::append_progress_column ()
{
progress_renderer = new Gtk::CellRendererProgress();
progress_renderer->property_width() = 100;
Gtk::TreeViewColumn* tvc = manage (new Gtk::TreeViewColumn ("", *progress_renderer));
tvc->add_attribute (*progress_renderer, "value", _columns.progress);
_display.append_column (*tvc);
}
void
LibraryDownloadDialog::append_install_column ()
{
install_renderer = new Gtk::CellRendererText();
Gtk::TreeViewColumn* tvc = manage (new Gtk::TreeViewColumn ("", *install_renderer));
tvc->set_data (X_("index"), (void*) (intptr_t (_columns.install.index())));
tvc->add_attribute (*install_renderer, "text", _columns.install);
_display.append_column (*tvc);
}
void
LibraryDownloadDialog::add_library (ARDOUR::LibraryDescription const & ld)
{
Gtk::TreeModel::iterator i = _model->append();
(*i)[_columns.name] = ld.name();
(*i)[_columns.author] = ld.author();
(*i)[_columns.license] = ld.license();
(*i)[_columns.size] = ld.size();
(*i)[_columns.installed] = ld.installed();
(*i)[_columns.url] = ld.url();
(*i)[_columns.toplevel] = ld.toplevel_dir();
if (ld.installed()) {
(*i)[_columns.install] = string (_("Installed"));
} else {
(*i)[_columns.install] = string (_("Install"));
}
/* tooltip must be escape for pango markup
*/
(*i)[_columns.description] = Glib::Markup::escape_text (ld.description());
}
void
LibraryDownloadDialog::install (std::string const & path, Gtk::TreePath const & treepath)
{
std::string destdir = Glib::path_get_dirname (path);
inflater = new Inflater (path, destdir);
inflater->progress.connect (install_connection, invalidator(*this), boost::bind (&LibraryDownloadDialog::install_progress, this, _1, _2, path, treepath), gui_context());
inflater->start (); /* starts unpacking in a thread */
}
void
LibraryDownloadDialog::install_progress (size_t nread, size_t total, std::string path, Gtk::TreePath treepath)
{
Gtk::TreeModel::iterator row = _model->get_iter (treepath);
if (!inflater) {
return;
}
if (inflater->status() >= 0) {
LibraryDownloadDialog::install_finished (row, path, inflater->status());
return;
}
(*row)[_columns.progress] = (int) round ((double) nread / total);
}
void
LibraryDownloadDialog::install_finished (Gtk::TreeModel::iterator row, std::string path, int status)
{
if (status == 0) {
std::string toplevel = (*row)[_columns.toplevel];
toplevel = Glib::build_filename (Glib::path_get_dirname (path), toplevel);
LibraryFetcher lf;
lf.add (toplevel);
(*row)[_columns.installed] = true;
(*row)[_columns.install] = string (_("Installed"));
(*row)[_columns.progress] = 100;
} else {
(*row)[_columns.installed] = false;
(*row)[_columns.install] = _("Install");
(*row)[_columns.progress] = 0;
}
/* Always unlink (remove) the downloaded archive */
::g_unlink (path.c_str());
/* reap thread */
install_connection.disconnect ();
delete inflater;
inflater = 0;
}
void
LibraryDownloadDialog::download (Gtk::TreePath const & path)
{
Gtk::TreeModel::iterator row = _model->get_iter (path);
std::string url = (*row)[_columns.url];
PBD::Downloader* downloader;
try {
downloader = new PBD::Downloader (url, ARDOUR::Config->get_clip_library_dir());
} catch (...) {
(*row)[_columns.install] = _("Error");
return;
}
/* setup timer callback to update progressbar */
Glib::signal_timeout().connect (sigc::bind (sigc::mem_fun (*this, &LibraryDownloadDialog::dl_timer_callback), downloader, path), 40);
(*row)[_columns.downloader] = downloader;
/* and go ... */
downloader->start ();
/* and back to the GUI event loop, though we're modal so not much is possible */
}
bool
LibraryDownloadDialog::dl_timer_callback (Downloader* dl, Gtk::TreePath treepath)
{
Gtk::TreeModel::iterator row = _model->get_iter (treepath);
/* zero status indicates still running; positive status indicates
* success; negative value indicates failure
*/
if (dl->status() == 0) {
(*row)[_columns.progress] = (int) round (dl->progress() * 100.0);
return true; /* call again */
}
(*row)[_columns.progress] = 0.;
(*row)[_columns.downloader] = 0;
if (dl->status() < 0) {
(*row)[_columns.install] = _("Install");;
} else {
(*row)[_columns.install] = _("Installing");
install (dl->download_path(), treepath);
}
delete dl;
return false; /* no more calls, done or cancelled */
}
bool
LibraryDownloadDialog::display_button_press (GdkEventButton* ev)
{
if ((ev->type == GDK_BUTTON_PRESS) && (ev->button == 1)) {
Gtk::TreeModel::Path path;
Gtk::TreeViewColumn* column;
int cellx, celly;
if (!_display.get_path_at_pos ((int)ev->x, (int)ev->y, path, column, cellx, celly)) {
return false;
}
int col = (intptr_t) column->get_data (X_("index"));
if (col != _columns.install.index()) {
return false;
}
Gtk::TreeIter iter = _model->get_iter (path);
string cur = (*iter)[_columns.install];
if (cur == _("Install")) {
if (!(*iter)[_columns.installed]) {
(*iter)[_columns.install] = _("Cancel");
download (path);
}
} else {
Downloader* dl = (*iter)[_columns.downloader];
if (dl) {
dl->cancel ();
}
(*iter)[_columns.install] = _("Install");
}
return true;
}
return false;
}