* Use JS for spacing between atoms instead of CSS
Summary:
This is the first step towards creating an intermediate representation
that can be used to generate HTML, SVG, and Canvas commands for rendering.
By generating spans that contain the width of the spaces instead of
relying on CSS sibling rules we'll be able to one day replaces the spans
with intermeidate 'Glue' nodes (in a later PR).
An added benefit of this approach is that is enables us to programmatically
change the values for thinspace, mediumspace, and thickspace which will
allow us to implement the \setlength command.
Test Plan:
- npm test
- dockers/Screenshotter/screenshotter.sh --verify
* fixed failures in BinCancellation, BoldSymbol, and OperatorName
* update screenshots
* don't use current size when determining size of spaces, update more screenshots
* fix spacing in SizingBaseline and StyleSwitching
* actually do the right thing for sizing groups
* fix \not for Chrome and Firefox
* do TODOs
* address feedback from the code review
* fix issue in delimsizing.js
* add TODO to think about a better solution in href.js
* fix typos, simplify href, be honest about paddingLeft for \not
* Make accents zero width
Make the width of an accented character equal to the width of the character,
by making accents zero width. In particular, fixes#1028 (`\ddot\imath`).
This involved reworking all of the accent offset machinery, in particular
skew and accent-hungarian. A bit cleaner now.
Also added support for the new width character metrics in symbolNode.
* Update AccentsText test
* Fix comment
* Use inline SVG for stretchy elements
Replace all background-images with inline SVG code.
Pros:
* `\color` works in all browsers, even IE/Edge
* Better printing
* Much simpler CSS
* No links to background-images
* No `mask`
* No browser-detection
* No external SVG files
* Faster first rendering
Cons
* No image caching
* Heavier HTML load
* Larger JavaScript file
* `\cancel` line is in `px` units, not `em` units
* Remove static/images from make file
* Change \cancel from px to em
* regenerate screenshots for functions using inline svg
Summary:
Stuff like `\red{\overbrace{AB}}` works now in addition to `\color{red}{\overbrace{AB}}`. Strikethrough now respects color. The Firefox in the screenshotter doesn't seem to support `background-image` + `mask`, but I manually tested that the latest Firefox does.
Test plan:
Ran `make`, then tested in latest Chrome and Firefox to ensure color support was working, then ran `make screenshots`.
