[ios] Groundwork for new Redraw API, refactoring AppState, and bugfixes (#1133)

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* fix #1087. the CFRunLoopTimer was never started if the user never changed the controlflow.

* RedrawRequested ordering matches the new redraw api
consistent asserts
lots of appstate refactoring to rely less on unsafe, and hopefully make it easier to maintain

* ios: dpi bugfix. inputs to setContentScaleFactor are not to be trusted as iOS uses 0.0 as a sentinel value for "default device dpi".

the fix is to always go through the getter.

* move touch handling onto uiview

* update changelog

* rustfmt weirdness

* fix use option around nullable function pointers in ffi

* Document why gl and metal views don't use setNeedsDisplay

* change main events cleared observer priority to 0 instead of magic number
log when processing non-redraw events when we expect to only be processing redraw events

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mtak- 2019-09-04 14:23:11 -07:00 • committed by Osspial

parent c99bba1655

commit bfcd85ab15

6 changed files with 880 additions and 551 deletions

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src/platform_impl/ios/app_state.rs

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