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|
use gtk::{ListBox, pango::WrapMode, prelude::*};
use relm4::prelude::*;
use crate::subtitle_extractor::{StreamIndex, SubtitleCue, TRACKS};
#[derive(Debug)]
pub enum SubtitleCueOutput {
SeekTo(gst::ClockTime),
}
#[relm4::factory(pub)]
impl FactoryComponent for SubtitleCue {
type Init = Self;
type Input = ();
type Output = SubtitleCueOutput;
type CommandOutput = ();
type ParentWidget = gtk::ListBox;
view! {
gtk::Button {
inline_css: "padding: 5px; border-radius: 0;",
connect_clicked: {
let start = self.start;
move |_| {
sender.output(SubtitleCueOutput::SeekTo(start)).unwrap()
}
},
gtk::Label {
set_label: &self.text,
set_wrap: true,
set_wrap_mode: WrapMode::Word,
set_xalign: 0.0,
add_css_class: "body",
}
}
}
fn init_model(init: Self::Init, _index: &Self::Index, _sender: FactorySender<Self>) -> Self {
init
}
}
pub struct Transcript {
active_stream_index: Option<StreamIndex>,
active_cues: FactoryVecDeque<SubtitleCue>,
pending_scroll: Option<usize>,
}
#[derive(Debug)]
pub enum TranscriptMsg {
NewCue(StreamIndex, SubtitleCue),
SelectTrack(StreamIndex),
ScrollToCue(usize),
}
#[derive(Debug)]
pub enum TranscriptOutput {
SeekTo(gst::ClockTime),
}
pub struct TranscriptWidgets {
viewport: gtk::Viewport,
}
impl SimpleComponent for Transcript {
type Init = ();
type Input = TranscriptMsg;
type Output = TranscriptOutput;
type Widgets = TranscriptWidgets;
type Root = gtk::ScrolledWindow;
fn init(
_init: Self::Init,
root: Self::Root,
sender: ComponentSender<Self>,
) -> ComponentParts<Self> {
let listbox = ListBox::builder()
.selection_mode(gtk::SelectionMode::None)
.build();
let active_cues =
FactoryVecDeque::builder()
.launch(listbox)
.forward(sender.output_sender(), |output| match output {
SubtitleCueOutput::SeekTo(pos) => TranscriptOutput::SeekTo(pos),
});
let model = Self {
active_stream_index: None,
active_cues,
pending_scroll: None,
};
let widgets = TranscriptWidgets {
viewport: gtk::Viewport::builder().build(),
};
widgets.viewport.set_child(Some(model.active_cues.widget()));
root.set_child(Some(&widgets.viewport));
ComponentParts { model, widgets }
}
fn init_root() -> Self::Root {
gtk::ScrolledWindow::new()
}
fn update(&mut self, msg: Self::Input, _sender: ComponentSender<Self>) {
self.pending_scroll = None;
match msg {
TranscriptMsg::NewCue(stream_index, cue) => {
if self.active_stream_index == Some(stream_index) {
self.active_cues.guard().push_back(cue);
}
}
TranscriptMsg::SelectTrack(stream_index) => {
self.active_stream_index = Some(stream_index);
// Clear current widgets and populate with selected track's cues
self.active_cues.guard().clear();
let tracks = TRACKS.read();
if let Some(track) = tracks.get(&stream_index) {
for cue in &track.cues {
self.active_cues.guard().push_back(cue.clone());
}
}
}
TranscriptMsg::ScrollToCue(ix) => {
self.pending_scroll = Some(ix);
}
}
}
fn update_view(&self, widgets: &mut Self::Widgets, _sender: ComponentSender<Self>) {
if let Some(ix) = self.pending_scroll {
if let Some(row) = self.active_cues.widget().row_at_index(ix as i32) {
widgets.viewport.scroll_to(&row, None);
}
}
}
}
|