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decoder: Use glycin for image loading expect SVG

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This gives us sandboxed image decoding and others the
option to extend Loupe with other image formats.
This commit is contained in:
Sophie Herold 2023-05-23 01:49:40 +02:00
parent d690c0e2d8
commit 1b2dde79b6
18 changed files with 536 additions and 1416 deletions
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25
src/widgets/image.rs
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@ -608,7 +608,7 @@ mod imp {
let applicable_zoom = widget.applicable_zoom();
let scaling_filter = if self.format.borrow().map_or(false, |x| x.is_svg()) {
let scaling_filter = if self.format.borrow().as_ref().map_or(false, |x| x.is_svg()) {
// Looks better in SVG animations and avoids rendering issues
gsk::ScalingFilter::Linear
} else if applicable_zoom < 1. {
@ -770,7 +770,7 @@ impl LpImage {
// Reset background color for reloads
self.set_background_color(None);
let (decoder_res, mut decoder_update) = Decoder::new(file.clone(), tiles.clone()).await;
let (decoder, mut decoder_update) = Decoder::new(file.clone(), tiles.clone()).await;
let weak_obj = self.downgrade();
spawn(async move {
@ -782,10 +782,7 @@ impl LpImage {
log::debug!("Stopped listening to decoder since sender is gone");
});
if let Ok(decoder) = decoder_res {
let decoder = Arc::new(decoder);
self.imp().decoder.replace(Some(decoder));
}
self.imp().decoder.replace(Some(Arc::new(decoder)));
}
/// Called when decoder sends update
@ -836,13 +833,11 @@ impl LpImage {
DecoderUpdate::Format(format) => {
imp.format.replace(Some(format));
self.notify("format-name");
// Do the animation part for animated formats
if format.is_animated() {
let callback_id = self
}
DecoderUpdate::Animated => {
let callback_id = self
.add_tick_callback(glib::clone!(@weak self as obj => @default-return glib::Continue(false), move |_, clock| obj.tick_callback(clock)));
imp.tick_callback.replace(Some(callback_id));
}
imp.tick_callback.replace(Some(callback_id));
}
DecoderUpdate::UnsupportedFormat => {
if !self.is_unsupported() {
@ -1160,7 +1155,7 @@ impl LpImage {
/// Maximal zoom allowed for this image
fn max_zoom(&self) -> f64 {
if let Some(decoder::ImageFormat::Svg) = self.format() {
if self.format().map_or(false, |x| x.is_svg()) {
let (width, height) = self.original_dimensions();
// Avoid division by 0
let long_side = f64::max(1., i32::max(width, height) as f64);
@ -1684,12 +1679,12 @@ impl LpImage {
/// Image format
pub fn format(&self) -> Option<decoder::ImageFormat> {
*self.imp().format.borrow()
self.imp().format.borrow().clone()
}
/// Image format displayable name
pub fn format_name(&self) -> Option<String> {
self.imp().format.borrow().map(|x| x.to_string())
self.imp().format.borrow().as_ref().map(|x| x.to_string())
}
/// Returns decoding error if one occured