* Rename hidpi_factor to scale_factor
* Deprecate WINIT_HIDPI_FACTOR environment variable in favor of WINIT_X11_SCALE_FACTOR
* Rename HiDpiFactorChanged to DpiChanged and update docs
I'm renaming it to DpiChanged instead of ScaleFactorChanged, since I'd
like Winit to expose the raw DPI value at some point in the near future,
and DpiChanged is a more apt name for that purpose.
* Format
* Fix macos and ios again
* Fix bad macos rebase
* fix: use a 'static lifetime for the web backend's `Event` types
* implement hidpi for stdweb (web-sys wip?)
* fix: make all canvas resizes go through backend::set_canvas_size
* update Window docs for web, make `inner/outer_position` return the position in the viewport
* Begin implementing DPI generics
* Fix multithreaded example
* Format
* Fix serde test
* hopefully fix most of the errors
* Fix dpi module errors
* More error fixings
* Format
* fix macos errors
* Another error pass
* Replace bad type signatures
* more fixins
Adds fullscreen using native web APIs to the stdweb and web-sys backends.
Due to limitations of browser APIs, requests for fullscreen can only be fulfilled during a short-lived user-triggered event. This commit does automatically handle that under the hood, but it does introduce unavoidable latency in full-screening the canvas.
