This avoids having to "duplicate" dummy `readBlock` methods in a couple of image-stream classes.
Also, move a few `DecodeStream` field definitions to (ever so slightly) shorten the code.
The `textLayerImagePlaceholder` canvas added in #20626 covers scanned
pages and was not recognized as a valid pointerdown target by
`#textLayerPointerDown`, so free highlights couldn't start.
If `PDFDocumentLoadingTask.destroy` ran while `workerIdPromise` was
pending, the inner `.then` in `getDocument` threw "Loading aborted"
before `WorkerTransport` was constructed, so `_transport` was never set
and the "Terminate" message was never posted.
Remove the "Float32Array" mention in the comment, given that the
implementation usesa Float64Array.
Actually using a Float32Array passes all the tests we currently have and
reduces memory usage (by 16 bytes per op), however to be sure that it
does not introduce rounding bugs we'd need to `Math.fround` all
operations we do on the clipBox and pendingBBox. It reduces the
readibilty of the code, but we can revisit if this memory usage becomes
a problem.
When pages carry explicit pageIndices (e.g. after a delete),
resolve insertAfter against that layout instead of the empty
base sequence. Also reject partial pageIndices combined with
insertAfter, which would race against the extraction's auto-fill.
In practice this probably hasn't caused any bugs, however given that `DOMElement.style.zIndex` returns a string the existing code is subtly wrong.
This is also consistent with pre-existing `zIndex` code in the `PopupElement` class, see the `#show` and `#hide` methods.
Currently the hash-property is just a stringified Array, which means that the hash-property can become arbitrarily long. That's not a good idea since it's used to compute a cache-key, in the API, which is then sent to the worker-thread. Hence the hash-property should be reasonably short, and its length should *not* depend on the number of modified editors, which can be achieved by using `MurmurHash3_64` here as well.
Many `parseInt` call-sites already provide the `radix` argument, and this rule helps improve consistency in the code-base; see https://eslint.org/docs/latest/rules/radix
*Please note:* The rule is disabled in `src/scripting_api/util.js` for now, since it's not obvious at a glance (at least to me) what the correct `radix` argument should be there.
The alpha feature is available in Firefox nightly (with the pref `dom.forms.html_color_picker.enabled` set to `true`).
It's available in Safari but not in Chrome.
*Note:* This is similar to PR 19525, which did the same thing for the OpenJPEG decoder.
The advantages of doing this are:
- The same JBig2 decoder is used regardless of WASM being supported or not, which means consistent rendering.
- The old `Jbig2Image` implementation has various bugs and missing features.
- Less code that needs to be maintained in the PDF.js project, since both the CCITT and the JBig2 decoder is replaced.
The disadvantage of doing this is:
- Slightly larger bundle size, however the effect is limited since a fair amount of PDF.js code can be removed. For the `gulp mozcentral` target the size increase is approximately 54 kilo-bytes (which is small compared to the 452 kilo-bytes for the JS version of the OpenJPEG decoder).
Rather than relying on the time it takes to parse/render the pages, which leads to intermittent failures, add a test-only property and use it to check if the "CopyLocalImage" code-path was exercised.
Instrument JS files on-the-fly via babel-plugin-istanbul when --coverage
or --coverage-per-test is passed, producing an aggregate lcov/HTML report
at the end of the run. A persistent PDFWorker accumulates worker-thread
coverage alongside the main-thread coverage, collected via a new
GetWorkerCoverage message handler.
With --coverage-per-test, an inverted index
(build/coverage/per-test-index.json) is also built as tests run, mapping
each hit source line and function name to the numeric IDs of the tests
that exercised it, keeping the output compact. The new
`gulp test_search --code=file::line_or_function` tool queries the index,
and passing --code to browsertest pre-filters the test run to only those
tests.
Coverage output formats are selectable via --coverage-formats (default:
info; also accepts html, json, text, cobertura, clover).
With the exception of `glyphsIds` the length of the other segments can be trivially determined upfront, which is obvious in hindsight. This way unnecessary allocations can be avoided when building the "cmap" table.
After the previous patches the `string32` helper function is now only used in the `FontLoader.prototype._prepareFontLoadEvent` method, which is stubbed out in the Firefox PDF Viewer, hence move it there instead to avoid bundling dead code.
This helps reduce the amount of boilerplate code needed in multiple spots throughout the font code, and more importantly it'll help when building TrueType tables whose final size is non-trivial to compute upfront.
remove as much as possible some intermediate canvases and avoid to use SVG filter
at each composition.
Rendering all the pages of issue17784.pdf takes 2x less time now.
