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// subtitleeditor -- a tool to create or edit subtitle
//
// https://subtitleeditor.github.io/subtitleeditor/
// https://github.com/subtitleeditor/subtitleeditor/
//
// Copyright @ 2005-2018, kitone
//
// - "the ultimate subtitle fitness center"
// a subtitleeditor plugin by Eltomito <tomaspartl@centrum.cz>
//
// 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 3 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, see <http://www.gnu.org/licenses/>.
#include <debug.h>
#include <extension/action.h>
#include <i18n.h>
#include <utility.h>
class MinimizeDurationPlugin : public Action {
public:
MinimizeDurationPlugin() {
activate();
update_ui();
}
~MinimizeDurationPlugin() {
deactivate();
}
void activate() {
se_dbg(SE_DBG_PLUGINS);
// actions
action_group = Gtk::ActionGroup::create("MinimizeDurationPlugin");
action_group->add(Gtk::Action::create("minimize-duration",
_("Minimize Duration From Start"),
_("Compact all selected subtitles to their minimum permissible "
"duration set in preferences by decreasing the end timecode, so "
"start time is unchanged")),
sigc::mem_fun(*this, &MinimizeDurationPlugin::on_minimize_duration_from_start));
action_group->add(Gtk::Action::create("minimize-duration-from-end",
_("Minimize Duration From End"),
_("Compact all selected subtitles to their minimum permissible "
"duration set in preferences by increasing the start timecode, "
"so end time is unchanged")),
sigc::mem_fun(*this, &MinimizeDurationPlugin::on_minimize_duration_from_end));
action_group->add(Gtk::Action::create("idealize-duration",
_("_Idealize Duration From Start"),
_("Compact all selected subtitles to their ideal "
"duration set in preferences by decreasing the "
"end timecode, so start time is unchanged")),
sigc::mem_fun(*this, &MinimizeDurationPlugin::on_idealize_duration_from_start));
action_group->add(Gtk::Action::create("idealize-duration-from-end",
_("_Idealize Duration From End"),
_("Compact all selected subtitles to their ideal "
"duration set in preferences by increasing the "
"start timecode, so end time is unchanged")),
sigc::mem_fun(*this, &MinimizeDurationPlugin::on_idealize_duration_from_end));
// ui
Glib::RefPtr<Gtk::UIManager> ui = get_ui_manager();
ui_id = ui->new_merge_id();
ui->insert_action_group(action_group);
ui->add_ui(ui_id, "/menubar/menu-timings/idealize-duration", "idealize-duration", "idealize-duration");
ui->add_ui(ui_id, "/menubar/menu-timings/idealize-duration-from-end", "idealize-duration-from-end", "idealize-duration-from-end");
ui->add_ui(ui_id, "/menubar/menu-timings/minimize-duration", "minimize-duration", "minimize-duration");
ui->add_ui(ui_id, "/menubar/menu-timings/minimize-duration-from-end", "minimize-duration-from-end", "minimize-duration-from-end");
}
void deactivate() {
se_dbg(SE_DBG_PLUGINS);
Glib::RefPtr<Gtk::UIManager> ui = get_ui_manager();
ui->remove_ui(ui_id);
ui->remove_action_group(action_group);
}
void update_ui() {
se_dbg(SE_DBG_PLUGINS);
bool visible = (get_current_document() != NULL);
action_group->get_action("minimize-duration")->set_sensitive(visible);
action_group->get_action("minimize-duration-from-end")->set_sensitive(visible);
action_group->get_action("idealize-duration")->set_sensitive(visible);
action_group->get_action("idealize-duration-from-end")->set_sensitive(visible);
}
protected:
void on_idealize_duration_from_start() {
se_dbg(SE_DBG_PLUGINS);
execute(cfg::get_double("timing", "ideal-characters-per-second"), true);
}
void on_idealize_duration_from_end() {
se_dbg(SE_DBG_PLUGINS);
execute(cfg::get_double("timing", "ideal-characters-per-second"), false);
}
void on_minimize_duration_from_start() {
se_dbg(SE_DBG_PLUGINS);
execute(cfg::get_double("timing", "max-characters-per-second"), true);
}
void on_minimize_duration_from_end() {
se_dbg(SE_DBG_PLUGINS);
execute(cfg::get_double("timing", "max-characters-per-second"), false);
}
bool execute(double maxcps, bool from_start) {
se_dbg(SE_DBG_PLUGINS);
Document* doc = get_current_document();
g_return_val_if_fail(doc, false);
Subtitles subtitles = doc->subtitles();
// NOTE: the selection returned is always sorted regardless of the order the
// user clicked on the subtitles in or at least it was when I tried it.
std::vector<Subtitle> selection = subtitles.get_selection();
if (selection.size() < 1) {
doc->flash_message(_("This action needs at least one subtitle to work on."));
return false;
}
// get relevant preferences
SubtitleTime mindur = cfg::get_int("timing", "min-display");
doc->start_command(_("Minimize Durations"));
Glib::ustring subtext = "";
// take each subtitle and set its duration to the permissible minimum
unsigned long subchars = 0;
SubtitleTime dur;
for (auto& sub : selection) {
subtext = sub.get_text();
subchars = utility::get_text_length_for_timing(subtext);
dur.totalmsecs = utility::get_min_duration_msecs(subchars, maxcps);
// doc->flash_message ( _("duration calculated is 1000 * %i / %i = %i"),
// (int)subchars, (int)maxcps, (int)dur.totalmsecs ); make sure we have at
// least the minimum duration
if (dur < mindur)
dur = mindur;
if (from_start) {
// the start time is fixed, we are changind the end time
sub.set_duration(dur);
} else {
// the end time is fixed, we are changing the start time
SubtitleTime endtime = sub.get_end();
sub.set_start_and_end(endtime - dur, endtime);
}
}
doc->emit_signal("subtitle-time-changed");
doc->finish_command();
return true;
}
protected:
Gtk::UIManager::ui_merge_id ui_id;
Glib::RefPtr<Gtk::ActionGroup> action_group;
};
REGISTER_EXTENSION(MinimizeDurationPlugin)
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