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Don't use image metadata for layout when rendering to a file

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PR #9208 added the ability to perform layout before an `<img>` resource is
fully loaded. However, when we are rendering to an image file for testing
purposes, we need to block until the image content is fully loaded (until
issue #9441 is fixed).

Fixes #9550.
This commit is contained in:
Matt Brubeck 2016-02-25 11:34:08 -08:00
parent 57a96ece0c
commit 37dd2a654d
1 changed files with 16 additions and 36 deletions
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52
components/layout/context.rs
View file

@ -178,47 +178,27 @@ impl<'a> LayoutContext<'a> {
pub fn get_or_request_image_or_meta(&self, url: Url, use_placeholder: UsePlaceholder)
-> Option<ImageOrMetadataAvailable> {
// If we are emitting an output file, load the image synchronously.
if opts::get().output_file.is_some() || opts::get().exit_after_load {
return self.get_or_request_image(url, use_placeholder)
.map(|img| ImageOrMetadataAvailable::ImageAvailable(img));
}
// See if the image is already available
let result = self.shared.image_cache_thread.find_image_or_metadata(url.clone(),
use_placeholder);
use_placeholder);
match result {
Ok(image_or_metadata) => Some(image_or_metadata),
Err(state) => {
// If we are emitting an output file, then we need to block on
// image load or we risk emitting an output file missing the image.
let is_sync = opts::get().output_file.is_some() ||
opts::get().exit_after_load;
match (state, is_sync) {
// Image failed to load, so just return nothing
(ImageState::LoadError, _) => None,
// Not loaded, test mode - load the image synchronously
(_, true) => {
let (sync_tx, sync_rx) = ipc::channel().unwrap();
self.shared.image_cache_thread.request_image(url,
ImageCacheChan(sync_tx),
None);
match sync_rx.recv().unwrap().image_response {
ImageResponse::Loaded(image) |
ImageResponse::PlaceholderLoaded(image) =>
Some(ImageOrMetadataAvailable::ImageAvailable(image)),
ImageResponse::None | ImageResponse::MetadataLoaded(_) =>
None,
}
}
// Not yet requested, async mode - request image or metadata from the cache
(ImageState::NotRequested, false) => {
let sender = self.shared.image_cache_sender.lock().unwrap().clone();
self.shared.image_cache_thread.request_image_and_metadata(url, sender, None);
None
}
// Image has been requested, is still pending. Return no image
// for this paint loop. When the image loads it will trigger
// a reflow and/or repaint.
(ImageState::Pending, false) => None,
}
// Image failed to load, so just return nothing
Err(ImageState::LoadError) => None,
// Not yet requested, async mode - request image or metadata from the cache
Err(ImageState::NotRequested) => {
let sender = self.shared.image_cache_sender.lock().unwrap().clone();
self.shared.image_cache_thread.request_image_and_metadata(url, sender, None);
None
}
// Image has been requested, is still pending. Return no image for this paint loop.
// When the image loads it will trigger a reflow and/or repaint.
Err(ImageState::Pending) => None,
}
}