This allows us to upgrade freetype beyond 2.9.1 (actually, 2.8.1 due to a bug in freetype 2.9) without wildly different font metrics. The reason that we don't want to change font metrics algorithms is that freetype's new algorithm is very different than the algorithm used for SWF fonts. The older freetype algorithm is closer to SWF, so we want to stick with it.
Thankfully, freetype supports accessing various metrics stored in font files in a more raw form, so we can provide our own custom algorithm in a way that is fully supported by freetype. I just copied the existing algorithm straight from 2.9.1 to restore our preferred behavior.
I confirmed that, after this change, OpenFL renders metrics like Lime 8.1.3. But we have the same upgraded freetype as Lime 8.2.0 that we had to revert for 8.2.1.
I plan to experiment with a mode that matches SWF even more closely, now that I have a better understanding of how fonts and freetype work.
We use a default of 72 for now to ensure text is formatted correctly. Not entirely sure why we are stuck on 72 but that is an investigation for the future.
This fixes some unexpected changes in text rendering for OpenFL which rely on a private function in Lime. Previously we defaulted at 72 dpi, which apparently is expected to layout the text properly. Most displays are 96 dpi or higher today, so we should probably look into this. For RenderGlyph, which was previously broken over several versions, we will now use a dpi of 96 for now. In the next version of lime, we absolutely should alter the function signature to allow for renderGlyph to accept a dpi argument.
I think it should probably use 96 dpi instead of 72.... In the next minor version of Lime I think we should change the function sig to allow a dpi argument.
We change the way RenderGlyph populates the binary data here. It's a little heavier than the 8-bit method used previously but I was having issues getting that to work properly with `Image`.
This change eliminates the cleanup attempt of the current OpenAL context and associated system resources. A change in OpenAL 1.20.0 made it unlikely that we will be able to clean up things in this way moving forward. We should steer users toward using `lime.system.System.exit()` or petition a change in the haxe stdlib to allow us to hook into Sys.exit().
I am not 100% satisfied with this, so perhaps we will find another solution. In the end, I think the benefit of updating OpenAL supersedes any inconvenience here.
Closes https://github.com/openfl/lime/issues/1803
Casting `const char*` → `char*` is bad form, and we'd rather copy the string than do that. However, `GetGlyphIndex()` now takes a const, so neither workaround is needed.
The app's Timers should still continue when a window is hidden. Especially since an app could have multiple windows, with some being shown and some being hidden. If only one were hidden, the other shown windows would clearly behave in a broken manner because the one hidden window would cause all app timers, even those associated with other windows, to be paused.
Introduces new WINDOW_SHOW AND WINDOW_HIDE events from C++ to Haxe, and new onShow and onHide events on Haxe Window.
Followup to 0918ee2381
On SDL_APP_WILLENTERBACKGROUND and SDL_APP_DIDENTERFOREGROUND, inBackground was being toggled, but it was not toggled on SDL_WINDOWEVENT_SHOWN and SDL_WINDOWEVENT_HIDDEN. However, both pairs were dispatching WINDOW_DEACTIVATE and WINDOW_ACTIVATE from C++ to Haxe. When inBackground wasn't toggled, the UPDATE ApplicationEvent continued being dispatched from the C++, but the Haxe assumed that it wouldn't be. This meant that timers were still updated after WINDOW_DEACTIVATE for SDL_WINDOWEVENT_HIDDEN, but then they were still "advanced" as if paused on WINDOW_ACTIVATE for SDL_WINDOWEVENT_SHOWN. The next update time would be some time in the future, roughly equal to how long the Haxe thought the timers were paused. This could make it seem like the timers completed stopped updating, especially if they should have been paused for a long time. They would eventually continue, but they should have paused on WINDOW_DEACTIVATE and continued immediately on WINDOW_ACTIVATE.
