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The sixel implementation is behind the `sixel` feature flag.
Additionally to enable it, set in tunables:
```json
"image_preview": {
"sixel": {
"line_count": 10,
"cache_path": "/home/gipsy/Downloads/iamb_sixels"
}
}
```
The default is `"image_preview": "disabled"`.- Loading branch information
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,120 @@ | ||
| use std::convert::TryFrom; | ||
|
|
||
| use matrix_sdk::ruma::{ | ||
| events::{ | ||
| room::{ | ||
| message::{MessageType, RoomMessageEventContent}, | ||
| MediaSource, | ||
| }, | ||
| MessageLikeEvent, | ||
| SyncMessageLikeEvent, | ||
| }, | ||
| EventId, | ||
| OwnedEventId, | ||
| }; | ||
| use modalkit::tui::{buffer::Buffer, layout::Rect}; | ||
|
|
||
| use crate::{ | ||
| base::IambResult, | ||
| config::{ApplicationSettings, ImagePreview}, | ||
| }; | ||
|
|
||
| #[cfg(feature = "sixel")] | ||
| mod sixel; | ||
|
|
||
| pub enum Preview { | ||
| None, | ||
| Pending, | ||
| Loaded { data: String, placeholder: String }, | ||
| } | ||
|
|
||
| pub struct Previewer { | ||
| renderer: Box<dyn PreviewFormat + Send + Sync>, | ||
| } | ||
|
|
||
| impl Previewer { | ||
| pub fn new(settings: &ApplicationSettings) -> Option<Previewer> { | ||
| let renderer = match &settings.tunables.image_preview { | ||
| ImagePreview::Disabled => None, | ||
| #[cfg(feature = "sixel")] | ||
| ImagePreview::Sixel { line_count, cache_path } => { | ||
| match sixel::PreviewSixel::new(*line_count, cache_path.clone()) { | ||
| Ok(renderer) => Some(renderer), | ||
| Err(err) => { | ||
| eprintln!("Could not set up sixel renderer: {err}"); | ||
| None | ||
| }, | ||
| } | ||
| }, | ||
| }; | ||
| if let Some(renderer) = renderer { | ||
| return Some(Previewer { renderer: Box::new(renderer) }); | ||
| } | ||
| None | ||
| } | ||
|
|
||
| pub fn load_image( | ||
| &self, | ||
| PreviewSource { source: _, event_id }: &PreviewSource, | ||
| ) -> IambResult<Preview> { | ||
| let data = self.renderer.load(&event_id)?; | ||
| return Ok(Preview::Loaded { data, placeholder: self.renderer.placeholder() }); | ||
| } | ||
|
|
||
| pub fn save_image(&self, event_id: &EventId, bytes: Vec<u8>) -> IambResult<Preview> { | ||
| let data = self.renderer.save(event_id, bytes)?; | ||
| return Ok(Preview::Loaded { data, placeholder: self.renderer.placeholder() }); | ||
| } | ||
|
|
||
| pub fn render(&self, preview: &Preview, x: u16, y: u16, area: Rect, buf: &mut Buffer) { | ||
| self.renderer.render(preview, x, y, area, buf) | ||
| } | ||
| } | ||
|
|
||
| pub trait PreviewFormat { | ||
| fn placeholder(&self) -> String; | ||
| fn load(&self, event_id: &EventId) -> IambResult<String>; | ||
| fn save(&self, event_id: &EventId, bytes: Vec<u8>) -> IambResult<String>; | ||
| fn render(&self, preview: &Preview, x: u16, y: u16, area: Rect, buf: &mut Buffer); | ||
| } | ||
|
|
||
| pub struct PreviewSource { | ||
| pub source: MediaSource, | ||
| pub event_id: OwnedEventId, | ||
| } | ||
|
|
||
| impl TryFrom<&SyncMessageLikeEvent<RoomMessageEventContent>> for PreviewSource { | ||
| type Error = &'static str; | ||
| fn try_from(ev: &SyncMessageLikeEvent<RoomMessageEventContent>) -> Result<Self, Self::Error> { | ||
| if let SyncMessageLikeEvent::Original(ev) = &ev { | ||
| if let MessageType::Image(c) = &ev.content.msgtype { | ||
| Ok(PreviewSource { | ||
| source: c.source.clone(), | ||
| event_id: ev.event_id.clone(), | ||
| }) | ||
| } else { | ||
| Err("content message type is not image") | ||
| } | ||
| } else { | ||
| Err("event is not original event") | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl TryFrom<&MessageLikeEvent<RoomMessageEventContent>> for PreviewSource { | ||
| type Error = &'static str; | ||
| fn try_from(ev: &MessageLikeEvent<RoomMessageEventContent>) -> Result<Self, Self::Error> { | ||
| if let MessageLikeEvent::Original(ev) = &ev { | ||
| if let MessageType::Image(c) = &ev.content.msgtype { | ||
| Ok(PreviewSource { | ||
| source: c.source.clone(), | ||
| event_id: ev.event_id.clone(), | ||
| }) | ||
| } else { | ||
| Err("content message type is not image") | ||
| } | ||
| } else { | ||
| Err("event is not original event") | ||
| } | ||
| } | ||
| } |
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