This ensures that the layout viewport responds to each type of zoom correctly,
and lays the ground for CSS Media Queries and CSS Device Adaption.
Until we have proper touch support, mobile-style "pinch" zoom can be simulated
by holding Ctrl while scrolling with a mousewheel or trackpad gesture.
This fixes an issue where the CSS viewport was too large on high-DPI displays
because it was set to the window size in device pixels, instead of px. This
patch ensures that the window size is converted from device pixels to px
before being passed to script/layout code.
The Window trait now exposes the window size in both device pixels and
density-independent screen coordinates, with clearer method names.
This is cherry-picked from https://github.com/mozilla/servo/pull/1688:
* Initial spec-incompliant implementation of default click action for anchor elements.
* Add documentation; gut the new document URL loading method
and move it all into the new Window method.
* Add test for default event prevention.
Original developer: Josh Matthews <josh@joshmatthews.net>
Right now, the load is kicked off inside the parser glue. This is unfortunate
for several reasons:
1) we'd like to replace the current parser (libhubbub) by our own parser,
written in Rust, so code intertwined with the parser will have to be
rewritten;
2) it is impossible to support dynamically (i.e. from script) created iframes
in this way;
3) the code flow around loading subdocuments is complicated needlessly.
This commit adds the constellation channel (on which the message to actually
load the document is sent) as a field on the Page, to allow HTMLIFrameElement
to access it.
In rewriting the code, support for dynamically created iframes is added, and
a task failure is avoided when the value of the src attribute can not be
parsed.
Fix#2383
These changes introduce `FooEvent::new_uninitialized()` constructor. This constructor use to create `FooEvent` without calling `FooEvent::InitFooEvent`.
#2383 says integrating `FooEvent::new()` and `InitFooEvent`, but we need to preserve simple `FooEvent::new_uninitialized()` for `document.createEvent()`.
@jdm r?
This is a cleaner way to expose those functions, and makes it possible to
remove a significant amount code in rust-mozjs.
The assert() function is no longer exposed, as it was unused and not very
useful.
