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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
//
// 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>
class ExtendLengthPlugin : public Action {
public:
ExtendLengthPlugin() {
activate();
update_ui();
}
~ExtendLengthPlugin() {
deactivate();
}
void activate() {
se_dbg(SE_DBG_PLUGINS);
// actions
action_group = Gtk::ActionGroup::create("ExtendLengthPlugin");
action_group->add(Gtk::Action::create("extend-length",
_("_Extend Length Forward"),
_("Extend the length of the selected subtitles to the "
"start time of the next subtitle (while respecting minimum gap "
"between subtitles)")),
sigc::mem_fun(*this, &ExtendLengthPlugin::on_extend_length_fwd));
action_group->add(Gtk::Action::create("extend-length-bwd",
_("E_xtend Length Backwards"),
_("Extend the length of selected selected subtitles "
"backwards to the end time of the previous subtitle (while "
"respecting minimum gap between subtitles)")),
sigc::mem_fun(*this, &ExtendLengthPlugin::on_extend_length_bwd));
// 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/extend-length", "extend-length", "extend-length");
ui->add_ui(ui_id, "/menubar/menu-timings/extend-length-bwd", "extend-length-bwd", "extend-length-bwd");
}
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("extend-length")->set_sensitive(visible);
action_group->get_action("extend-length-bwd")->set_sensitive(visible);
}
protected:
void on_extend_length_fwd() {
se_dbg(SE_DBG_PLUGINS);
execute(true);
}
void on_extend_length_bwd() {
se_dbg(SE_DBG_PLUGINS);
execute(false);
}
bool execute(bool forward) {
se_dbg(SE_DBG_PLUGINS);
Document* doc = get_current_document();
g_return_val_if_fail(doc, false);
Subtitles subtitles = doc->subtitles();
std::vector<Subtitle> selection = subtitles.get_selection();
if (selection.empty()) {
doc->flash_message(_("Please select at least 1 subtitle."));
return false;
}
SubtitleTime gap(cfg::get_int("timing", "min-gap-between-subtitles"));
doc->start_command(_("Extend lenght"));
if (forward) { // extend length forward, i.e. keep start and move end
for (auto& sub : selection) {
Subtitle next = subtitles.get_next(sub);
if (next) {
SubtitleTime time = next.get_start() - gap;
sub.set_end(time);
}
}
} else { // extend length backwards, i.e. keep end and move start
for (int i = selection.size() - 1; i >= 0; --i) {
Subtitle& sub = selection[i];
Subtitle prev = subtitles.get_previous(sub);
if (prev) {
SubtitleTime endtime = sub.get_end();
SubtitleTime starttime = prev.get_end() + gap;
// NOTE: we cannot just call sub.set_start() because it automatically
// shifts the end to preserve duration
sub.set_start_and_end(starttime, 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(ExtendLengthPlugin)
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