Struct UiRoot 

pub struct UiRoot {
    pub id: String,
    pub root: Widget,
    pub layout_root: LayoutNode,
    pub needs_layout: bool,
}

Top-level UI tree. Build it, call layout, then [render] each frame.

Fields

id: String

root: Widget

layout_root: LayoutNode

needs_layout: bool

Implementations

impl UiRoot

pub fn new(id: impl Into<String>, root: Widget) -> UiRoot

pub fn layout(&mut self, screen_w: f32, screen_h: f32)

Recalculate layout. Call after changing the tree or on window resize.

pub fn render(&self, ctx: &GfxContext)

Render the UI tree via yog-gfx draw2d. Must be called from on_hud_render.

pub fn tooltip_at(&self, mx: f32, my: f32) -> Option<&str>

The tooltip of the innermost widget at (mx, my) that has one. Call after Self::layout.

pub fn render_tooltip(ctx: &GfxContext, text: &str, mx: f32, my: f32)

Draws text as a vanilla tooltip next to the cursor at (mx, my), kept inside the screen. Call after Self::render so it’s on top.

pub fn hit_test(&self, mx: f32, my: f32) -> Option<&LayoutNode>

Find the deepest clickable widget at (mx, my) in screen coordinates.

pub fn find_rect(&self, id: &str) -> Option<Rect>

Resolved rect of the (first) node tagged id — see layout::find_by_id. Call after Self::layout.

pub fn find_node(&self, id: &str) -> Option<&LayoutNode>

Laid-out node of the (first) widget tagged id — rect plus scroll state, see layout::find_node. Call after Self::layout.