Crate blinc_canvas_kit 

Canvas toolkit for interactive pan/zoom canvases with hit testing.

blinc_canvas_kit provides viewport management (pan, zoom, coordinate conversion) and element interaction (click, drag, hover) for blinc_layout::Canvas elements. All state persists across UI rebuilds via BlincContextState.

Usage

use blinc_canvas_kit::prelude::*;

let kit = CanvasKit::new("diagram");

kit.on_element_click(|evt| {
    tracing::info!("Clicked {:?}", evt.region_id);
});

kit.element(|ctx, bounds| {
    let r = Rect::new(100.0, 100.0, 200.0, 150.0);
    ctx.fill_rect(r, 8.0.into(), Brush::Solid(Color::BLUE));
    kit.hit_rect("my_node", r);
})

Re-exports

pub use background::CanvasBackground;

pub use background::PatternConfig;

pub use background::ZoomAdaptive;

pub use hit::CanvasDragEvent;

pub use hit::CanvasEvent;

pub use hit::HitRegion;

pub use hit::InteractionState;

pub use pan::PanController;

pub use selection::CanvasTool;

pub use selection::MarqueeState;

pub use selection::SelectionChangeEvent;

pub use selection::SelectionState;

pub use snap::SnapController;

pub use spatial::SpatialIndex;

pub use viewport::affine_inverse;

pub use viewport::CanvasViewport;

pub use zoom::ZoomController;

Modules

background

Viewport-aware infinite canvas background patterns.

hit

pan

prelude

Prelude for convenient imports.

selection

Multi-select and marquee selection for canvas elements.

snap

Snap-to-grid controller for content-space coordinates.

spatial

Uniform-grid spatial hash for fast AABB queries.

viewport

zoom

Structs

CanvasKit

Interactive canvas toolkit — receives events, manages viewport state, and provides hit testing for canvas-drawn elements.