✨ Add grid helpers to wasm

render-wasm/src/render/ui.rs

@@ -0,0 +1,43 @@
+use skia_safe::{self as skia, Color4f};
+use std::collections::HashMap;
+
+use crate::math::Matrix;
+use crate::render::grid_layout;
+use crate::shapes::{Shape, StructureEntry};
+use crate::uuid::Uuid;
+
+use super::{RenderState, SurfaceId};
+
+pub fn render(
+    render_state: &mut RenderState,
+    shapes: &HashMap<Uuid, &mut Shape>,
+    modifiers: &HashMap<Uuid, Matrix>,
+    structure: &HashMap<Uuid, Vec<StructureEntry>>,
+) {
+    let canvas = render_state.surfaces.canvas(SurfaceId::UI);
+
+    canvas.clear(Color4f::new(0.0, 0.0, 0.0, 0.0));
+    canvas.save();
+
+    let viewbox = render_state.viewbox;
+    let zoom = viewbox.zoom * render_state.options.dpr();
+
+    canvas.scale((zoom, zoom));
+
+    canvas.translate((-viewbox.area.left, -viewbox.area.top));
+
+    let canvas = render_state.surfaces.canvas(SurfaceId::UI);
+
+    if let Some(id) = render_state.show_grid {
+        if let Some(shape) = shapes.get(&id) {
+            grid_layout::render_overlay(zoom, canvas, shape, shapes, modifiers, structure);
+        }
+    }
+
+    canvas.restore();
+    render_state.surfaces.draw_into(
+        SurfaceId::UI,
+        SurfaceId::Target,
+        Some(&skia::Paint::default()),
+    );
+}