Struct App

pub(crate) struct App {}

Trait Implementations

impl SharedAppState for App

fn before_event(&mut self)

Before State::event is called, call this.

fn draw_default(&self, _: &mut GfxCtx<'_>)

When DrawBaselayer::DefaultDraw is called, run this.

fn dump_before_abort(&self, _: &Canvas)

Will be called if State::event or State::draw panics.

fn before_quit(&self, _: &Canvas)

Called before a normal exit, like window close

fn free_memory(&mut self)

If widgetry determines the video card is low on memory, this may be called. The application should make its best effort to delete any unused Drawables.

impl State<App> for Demo

fn event(&mut self, ctx: &mut EventCtx<'_>, _: &mut App) -> Transition<App>

Respond to a UI event, such as input or time passing.

fn draw(&self, g: &mut GfxCtx<'_>, _: &App)

Draw

fn draw_baselayer(&self) -> DrawBaselayer

Specifies what to draw before draw()

fn on_destroy(&mut self, _: &mut EventCtx<'_>, _: &mut A)

Before this state is popped or replaced, call this.

fn recreate(&mut self, _: &mut EventCtx<'_>, _: &mut A) -> Box<dyn State<A>>

Respond to Transition::Recreate by assuming state in the app has changed, but preserving the State-specific state appropriately.