Struct PaxEngine 

pub struct PaxEngine {
    pub runtime_context: Rc<RuntimeContext>,
    pub root_expanded_node: Option<Rc<ExpandedNode>>,
    pub scroller_tiling_policy: ScrollerTilingPolicy,
}

Singleton struct storing everything related to properties computation & rendering

Fields

runtime_context: Rc<RuntimeContext>

root_expanded_node: Option<Rc<ExpandedNode>>

scroller_tiling_policy: ScrollerTilingPolicy

Implementations

impl PaxEngine

Central instance of the PaxEngine and runtime, intended to be created by a particular chassis. Contains all rendering and runtime logic.

pub fn new_empty( viewport_size: (f64, f64), platform: Platform, os: OS, get_elapsed_millis: Box<dyn Fn() -> u128>, scroller_tiling_policy: ScrollerTilingPolicy, ) -> Self

pub fn mount_root_component( &mut self, main_component_instance: Rc<ComponentInstance>, ) -> Rc<ExpandedNode>

Mount a root component tree into an existing runtime kernel.

pub fn unmount(&mut self)

Detach the mounted root component tree, leaving the runtime kernel empty.

pub fn new( main_component_instance: Rc<ComponentInstance>, viewport_size: (f64, f64), platform: Platform, os: OS, get_elapsed_millis: Box<dyn Fn() -> u128>, scroller_tiling_policy: ScrollerTilingPolicy, ) -> Self

pub fn tick(&mut self) -> Vec<NativeMessage>

Workhorse methods of every tick. Will be executed up to 240 Hz. Three phases:

1. Expand nodes & compute properties; recurse entire instance tree and evaluate ExpandedNodes, stitching together parent/child relationships between ExpandedNodes along the way.
2. Compute layout (z-index & TransformAndBounds) by visiting ExpandedNode tree in rendering order, writing computed rendering-specific values to ExpandedNodes
3. Render: a. find lowest node (last child of last node) b. start rendering, from lowest node on-up, throughout tree

pub fn render(&mut self, rcs: &mut dyn RenderContext)

pub fn get_expanded_node( &self, id: ExpandedNodeIdentifier, ) -> Option<Rc<ExpandedNode>>

pub fn set_viewport_size(&mut self, new_viewport_size: (f64, f64))

Called by chassis when viewport size changes, e.g. with native window resizes

pub fn update_layer_count(&self, rcs: &mut dyn RenderContext)

pub fn global_dispatch_focus(&self, args: Focus) -> bool

pub fn global_dispatch_select_start(&self, args: SelectStart) -> bool

pub fn global_dispatch_key_down(&self, args: KeyDown) -> bool

pub fn global_dispatch_key_up(&self, args: KeyUp) -> bool

pub fn global_dispatch_key_press(&self, args: KeyPress) -> bool

pub fn global_dispatch_gyro(&self, args: Gyro) -> bool

pub fn global_dispatch_accel(&self, args: Accel) -> bool