When a native class was extended, most native types were grabbing
their normal prototype instead of using the user's supplied prototype.
e.g. `class MyColorTransform extends ColorTransform`.
Maintain an external mapping from symbol names to registered
constructors to properly handle `registerClass` being called on
not-yet-available symbols.
SWFs v6 and v7+ each have a separate global mapping, with
different case sensitivities.
Also returns the correct boolean value to the AVM.
Fixes#2343 and #1864.
Add `backgroundColor` setting to the config options, allowing
a user to override the background color of an SWF. The polyfill
will now look for the `bgcolor` HTML attribute on the embed
and fill in this setting appropriately.
Player::background_color is now an Option. SetBackgroundColor will
change the background color of the player only when this is None,
i.e. only if no background color has yet been set.
This matches the behavior of the offical Flash Player, for example,
if a parent SWF is missing a SetBackgroundColor tag and loads a
child SWF, the child SWF's SetBackgroundColor tag takes effect.
This is anticipating adding a `bgcolor` option to the web builds,
allowing the HTML embed to override the bgcolor.
* Built-in constructors now return the newly constructed object,
which will be used as `this`. This allows for constructors such
as `new Object` which can return differing types.
* Adjust `FunctionObject::constructor` to take both a constructor
and a function. Add `constructor_to_fn!` macro to turn most
simple native constructors into a function that discards the
return value.
* Change `TObject::construct` to return `Value` instead of `Object`.
This is necessary for constructors that return primitive values.
When switching button states, previously we cleared all children
and recreated children for the new state. Now any children that
exist in both states are persisted and not recreated.
Fixes#2354.
Player::set_letterbox can be used to control the letterbox behavior.
* Letterbox::Off => no letterbox (flash behavior)
* Letterbox::Fullscreen => letterbox only in fullscreen (web default)
* Letterbox::On => always letterbox (desktop default)