| commit | 8e6fe4d789f430554f47df5085fa04a6808221c7 | [log] [tgz] |
|---|---|---|
| author | dmazzoni <[email protected]> | Mon Jun 27 06:35:37 2016 |
| committer | Commit bot <[email protected]> | Mon Jun 27 06:38:32 2016 |
| tree | f0345688e41f5dd588edc8f48df71c5ddbfc14f3 | |
| parent | 3618252c6bdc743f469b163c5b813d92ea6a064f [diff] |
Make the PDF plug-in accessible. Makes the PDF plug-in accessible on all supported platforms by building an accessibility tree for the PDF content and grafting it on as a subtree of the accessibility tree for the embedding page. It exposes all of the text of the PDF, including full support for computing the bounding box of any arbitrary text range. Using heuristics, automatically groups the text runs into paragraphs and marks some of them as headings if their font size is larger than the average for the page. I wrote a browser test for this, to be reviewed in a follow-up changelist. Currently the coordinates don't update if the user zooms. I want to fix that by using a transformation matrix after this change lands - http://crrev.com/2047873002 - but scrolling works fine. Future work might include incremental loading and support for links and maybe even fill-in forms. Depends on: http://crrev.com/1953053002 http://crrev.com/2058453002 http://crrev.com/2050973003 http://crrev.com/2055903002 BUG=54724 Review-Url: https://codereview.chromium.org/2055953002 Cr-Commit-Position: refs/heads/master@{#402122}