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  1. 17 Mar, 2022 12 commits
  3. 15 Mar, 2022 15 commits
    • Robert Knight's avatar
      Revert mousedown propagation change · 342ca159
      Robert Knight authored 
      Revert the mousedown propagation change from e70287cf.
In order to prevent VitalSource's own text selection highlight from
appearing, it is necessary to stop propagation of both mouseup and
mousedown events.
      342ca159
    • Robert Knight's avatar
      Make JSTOR logo open link in a new tab · 3efc33d2
      Robert Knight authored 
      In the context of our LMS app, this banner is displayed inside a nested
iframe, so it is important to open the link in a new tab.
      3efc33d2
    • Robert Knight's avatar
      Fix up a comment and spelling mistake in ImageTextLayer tests · de2ab684
      Robert Knight authored
      de2ab684
    • Robert Knight's avatar
      Rename `chars` => `charBoxes` · a2afcd77
      Robert Knight authored 
      Use the term `charBoxes` consistently within the file and to avoid
confusion with the `text` parameter.
      a2afcd77
    • Robert Knight's avatar
      Remove unused `glyphs` field of WordBox · df1290f0
      Robert Knight authored 
      The name was out of place in this module and it was unused.
      df1290f0
    • Robert Knight's avatar
      Add tests for new geometry utilities · b4e8df7e
      Robert Knight authored
      b4e8df7e
    • Robert Knight's avatar
      Improve text selection behavior in VitalSource PDFs · 00763a2d
      Robert Knight authored 
      Previously the text layer in VitalSource PDFs consisted of a set of
absolutely positioned elements, one per word. When the user was making a
text selection and the cursor was between words, the browser could not
determine an appropriate caret position in the text. As a result text
selection was tricky.

Improve this by re-implementing ImageTextLayer to produce a more
structured DOM tree. Group the characters into words, lines and columns.
Words are laid out using inline layout into `<hypothesis-text-line>`
elements, which are then arranged using block layouts into
`<hypothesis-text-column>` elements. Columns are absolutely positioned.
Within lines and columns the gaps between words and lines are fine-tuned
using margins. This use of inline and block layouts allows the browser
to set the selection correctly when the cursor is between words or
lines. The visual gap between selected words has also been eliminated by
adding inter-word spaces to the previous word.

 - Separate page layout analysis from DOM construction. This makes these
   elements easier to understand and improve.

 - Change DOM structure generated by `ImageTextLayer` to a hierarchical
   structure of words, lines and columns.

 - Change ImageTextLayer to use DOMRect and DOMPoint as the types for
   rect and point structs. This allows sharing of geometry utilities
   with other code.

 - Simplify rescaling of text layer when image size changes by
   expressing all margins, sizes and scales in the text layer in terms
   of CSS variables (`--x-scale` and `--y-scale`) defined on the root
   `<hypothesis-text-layer>` element. When the image is resized, these
   variables are simply updated to reflect the new image size.
      00763a2d
    • Lyza Danger Gardner's avatar
      Refactor and improve design of tag lists and related components · 899e9310
      Lyza Danger Gardner authored
      899e9310
    • Robert Knight's avatar
      Add test page for JSTOR content banner · 01cf0efe
      Robert Knight authored 
      Add a test page at http://localhost:3000/pdf/jstor that shows the JSTOR
content banner.
      01cf0efe
    • Robert Knight's avatar
      Add facility to customize client configuration in PDF test pages · 897dcf6d
      Robert Knight authored 
      Add the ability to specify custom configuration for a PDF test case by
putting the configuration in a `<basename>.config.json` file alongside
the PDF, where `<basename>` is the name of the PDF file minus the '.pdf'
extension.
      897dcf6d
    • Robert Knight's avatar
      Add `contentPartner` configuration option · 010c44fd
      Robert Knight authored 
      Add an option that enables the embedder to configure a content
provider/partner banner to be shown in the client, indicating who is
providing the content.
      010c44fd
    • Robert Knight's avatar
      Add and update tests for JSTOR content banner · d0039747
      Robert Knight authored
      d0039747
    • Lyza Danger Gardner's avatar
      Add JSTOR icon and style `ContentPartnerBanner` · c052cd18
      Lyza Danger Gardner authored
      c052cd18
    • Robert Knight's avatar
      Add option to show content partner banner in PDF integration · 75694446
      Robert Knight authored 
      Add an option to show a banner at the top of the PDF viewer indicating
where the content came from. This is a contractual requirement for
working with certain content providers.
      75694446
    • Robert Knight's avatar
      Catch mouseup/mousedown events earlier in SelectionObserver · e70287cf
      Robert Knight authored 
      Listen for mouseup/mousedown events on the document body rather than document
itself, so that we can still capture them if an event listener on
`document.body` or `document.documentElement` stops propagation of the event.
The VitalSource integration does this for example to prevent VitalSource's own
selection UI appearing, but ordinary web pages could do something similar.

In VitalSource books, this change makes the adder behave the same as it does in
HTML and PDF documents where, when making a selection with the mouse, the adder
only appears when the mouse is released so it doesn't get in the way during the
selection.

While updating the tests for this change, they were converted to use a real
document, as the complexity of mocking the relevant parts of the DOM document
interface accurately is now too high.
      e70287cf
  5. 14 Mar, 2022 10 commits
  7. 11 Mar, 2022 3 commits