Canvas: make double-click-to-plant work on desktop #135
@@ -104,6 +104,12 @@ Conventions that follow from it:
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- **Tap-to-place makes a one-plant plop** (radius = spacing/2, per the handoff);
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"Fill the bed" (rows / clumps) is the bulk tool. Fill geometry still follows
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the clump rules below — different tools, not a conflict.
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- **The canvas captures the pointer, so `onDoubleClick` on a bed never fires.**
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`track()` calls `setPointerCapture` on the SVG root for every press, and
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capture retargets the compatibility `click`/`dblclick` to the root. Double
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presses are detected in `objDown` (same object, < 400 ms, < 12 px) instead;
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a `dblclick` handler on an object is dead code — it was, silently, from the
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Organic rebuild until 2026-08-23.
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- **Undo in the header re-reads history before reverting.** The cached list
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trails the canvas right after a placement, and undoing the step *before* the
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one you meant is the worst thing an undo button can do. Keep it that way.
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@@ -35,6 +35,10 @@ import {
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import { useEditorStore, type Viewport } from './store'
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import type { EditorGarden, EditorObject } from './types'
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// A double press: same object, this close in time and space.
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const DOUBLE_PRESS_MS = 400
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const DOUBLE_PRESS_PX = 12
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const WHEEL_SENSITIVITY = 0.0016
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const ANIM_MS = 520
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const REFIT_THRESHOLD_PX = 60
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@@ -95,6 +99,13 @@ export const Canvas = forwardRef<
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const drag = useRef<Drag | null>(null)
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const pinch = useRef<Pinch | null>(null)
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const dropPlant = useRef<{ plant: Plant; lotId: number | null } | null>(null)
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// The last primary-button press on an object, for double-click detection.
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// Detected in objDown rather than with onDoubleClick on the object's <g>:
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// track() captures the pointer on the SVG root, and capture retargets the
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// compatibility click and dblclick events to the root, so a dblclick
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// handler on the object never fires — which is why "double-click a bed to
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// plant it" did nothing from the Organic rebuild until 2026-08-23.
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const lastPress = useRef<{ id: number; at: number; x: number; y: number } | null>(null)
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const vp = useEditorStore((s) => s.vp)
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const anim = useEditorStore((s) => s.anim)
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@@ -316,6 +327,7 @@ export const Canvas = forwardRef<
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// ── pointer handlers ────────────────────────────────────────────────────
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const onCanvasDown = (e: ReactPointerEvent) => {
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lastPress.current = null // a press on empty ground is not half of a double-click on a bed
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track(e)
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if (pts.current.size === 2) return pinchStart()
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const st = useEditorStore.getState()
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@@ -342,6 +354,18 @@ export const Canvas = forwardRef<
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}
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// Dimmed siblings stay inert inside a focused bed.
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if (st.focusId != null && o.id !== st.focusId) return
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const prev = lastPress.current
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const now = performance.now()
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// Only the primary button (or a finger) counts, like a native dblclick.
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lastPress.current = e.button === 0 && e.isPrimary ? { id: o.id, at: now, x: e.clientX, y: e.clientY } : null
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if (prev && lastPress.current && prev.id === o.id && now - prev.at < DOUBLE_PRESS_MS && Math.hypot(e.clientX - prev.x, e.clientY - prev.y) < DOUBLE_PRESS_PX) {
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// Second press of a double-click: focus the bed to plant it. No drag
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// starts, so the matching pointerup has nothing to select into Plot.
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lastPress.current = null
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drag.current = null
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if (o.plantable) focusObject(o)
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return
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}
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if (!latest.current.canEdit) {
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st.setSel({ type: 'object', id: o.id })
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st.setTab('plot')
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@@ -562,7 +586,6 @@ export const Canvas = forwardRef<
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opacity={dim ? DIM_OBJECT : 1}
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style={{ cursor: dim ? 'default' : canEdit ? 'grab' : 'pointer' }}
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onPointerDown={objDown(o)}
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onDoubleClick={o.plantable && !dim ? () => focusObject(o) : undefined}
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>
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{o.shape === 'circle' ? (
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<ellipse rx={o.widthCm / 2} ry={o.heightCm / 2} {...common} />
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