refactor(core): add useViewport for store viewport actions

Signed-off-by: braks <78412429+bcakmakoglu@users.noreply.github.com>

packages/core/src/auto-imports.d.ts

@@ -347,6 +347,7 @@ declare global {
   const useVModel: typeof import('@vueuse/core')['useVModel']
   const useVModels: typeof import('@vueuse/core')['useVModels']
   const useVibrate: typeof import('@vueuse/core')['useVibrate']
+  const useViewport: typeof import('./composables/useViewport')['default']
   const useVirtualList: typeof import('@vueuse/core')['useVirtualList']
   const useVueFlow: typeof import('./composables/useVueFlow')['default']
   const useWakeLock: typeof import('@vueuse/core')['useWakeLock']

packages/core/src/composables/useViewport.ts

@@ -0,0 +1,100 @@
+import { zoomIdentity } from 'd3-zoom'
+import type { ComputedGetters, D3Selection, GraphNode, State, ViewportFunctions } from '~/types'
+
+const DEFAULT_PADDING = 0.1
+
+export default (state: State, getters: ComputedGetters): ViewportFunctions => {
+  const { nodes, d3Zoom, d3Selection, dimensions, translateExtent, minZoom, maxZoom, viewport, snapToGrid, snapGrid } = $(state)
+
+  const { getNodes } = $(getters)
+
+  return {
+    zoomIn: async (options) => {
+      await zoom(1.2, options?.duration)
+    },
+    zoomOut: async (options) => {
+      await zoom(1 / 1.2, options?.duration)
+    },
+    zoomTo: async (zoomLevel, options) => {
+      if (d3Selection && d3Zoom) {
+        d3Zoom.scaleTo(transition(d3Selection, options?.duration), zoomLevel)
+      }
+    },
+    setTransform: async (transform, options) => {
+      transformViewport(transform.x, transform.y, transform.zoom, options?.duration)
+    },
+    getTransform: () => ({
+      x: viewport.x,
+      y: viewport.y,
+      zoom: viewport.zoom,
+    }),
+    fitView: async (
+      options = {
+        padding: DEFAULT_PADDING,
+        includeHiddenNodes: false,
+        duration: 0,
+      },
+    ) => {
+      if (!nodes.length) return
+
+      const nodesToFit: GraphNode[] = (options.includeHiddenNodes ? nodes : getNodes).filter((node) => {
+        const initialized = node.initialized && node.dimensions.width && node.dimensions.height
+        let shouldInclude = true
+
+        if (options.nodes?.length) {
+          shouldInclude = options.nodes.includes(node.id)
+        }
+
+        return initialized && shouldInclude
+      })
+
+      const bounds = getRectOfNodes(nodesToFit)
+
+      const { x, y, zoom } = getTransformForBounds(
+        bounds,
+        dimensions.width,
+        dimensions.height,
+        options.minZoom ?? minZoom,
+        options.maxZoom ?? maxZoom,
+        options.padding ?? DEFAULT_PADDING,
+        options.offset,
+      )
+
+      transformViewport(x, y, zoom, options?.duration)
+    },
+    setCenter: async (x, y, options) => {
+      const nextZoom = typeof options?.zoom !== 'undefined' ? options.zoom : maxZoom
+      const centerX = dimensions.width / 2 - x * nextZoom
+      const centerY = dimensions.height / 2 - y * nextZoom
+
+      transformViewport(centerX, centerY, nextZoom, options?.duration)
+    },
+    fitBounds: async (bounds, options = { padding: DEFAULT_PADDING }) => {
+      const { x, y, zoom } = getTransformForBounds(bounds, dimensions.width, dimensions.height, minZoom, maxZoom, options.padding)
+
+      transformViewport(x, y, zoom, options?.duration)
+    },
+    project: (position) => pointToRendererPoint(position, viewport, snapToGrid, snapGrid),
+  }
+
+  async function zoom(scale: number, duration?: number) {
+    if (d3Selection && d3Zoom) {
+      d3Zoom.scaleBy(transition(d3Selection, duration), scale)
+    }
+  }
+
+  function transformViewport(x: number, y: number, zoom: number, duration?: number) {
+    // enforce translate extent
+    const { x: clampedX, y: clampedY } = clampPosition({ x: -x, y: -y }, translateExtent)
+
+    const nextTransform = zoomIdentity.translate(-clampedX, -clampedY).scale(zoom)
+
+    if (d3Selection && d3Zoom) {
+      d3Zoom.transform(transition(d3Selection, duration), nextTransform)
+    }
+  }
+}
+
+function transition(selection: D3Selection, ms = 0) {
+  return selection.transition().duration(ms)
+}

packages/core/src/store/actions.ts

@@ -27,23 +27,7 @@ export function useActions(state: State, getters: ComputedGetters): Actions {
     state.hooks.updateNodeInternals.trigger(ids)
   }
 
-  const zoomPanHelper = ref<ReturnType<typeof useZoomPanHelper>>()
-
-  state.hooks.paneReady.on(({ id }) => {
-    zoomPanHelper.value = useZoomPanHelper(id)
-  })
-
-  const paneReady = async () => {
-    return new Promise<ReturnType<typeof useZoomPanHelper>>((resolve) => {
-      if (!zoomPanHelper.value) {
-        until(zoomPanHelper)
-          .not.toBeUndefined()
-          .then(() => resolve(zoomPanHelper.value!))
-      } else {
-        resolve(zoomPanHelper.value)
-      }
-    })
-  }
+  const viewportHelper = useViewport(state, getters)
 
   const nodeIds = $computed(() => state.nodes.map((n) => n.id))
   const edgeIds = $computed(() => state.edges.map((e) => e.id))
@@ -280,10 +264,8 @@ export function useActions(state: State, getters: ComputedGetters): Actions {
   const setNodeExtent: Actions['setNodeExtent'] = async (nodeExtent) => {
     state.nodeExtent = nodeExtent
 
-    if (zoomPanHelper.value) {
-      const nodeIds = getters.getNodes.value.map((n) => n.id)
-      updateNodeInternals(nodeIds)
-    }
+    const nodeIds = getters.getNodes.value.map((n) => n.id)
+    updateNodeInternals(nodeIds)
   }
 
   const setInteractive: Actions['setInteractive'] = (isInteractive) => {
@@ -628,38 +610,31 @@ export function useActions(state: State, getters: ComputedGetters): Actions {
     getIntersectingNodes,
     isNodeIntersecting,
     panBy,
-    fitView: async (params = { padding: 0.1 }) => {
-      const { fitView } = await paneReady()
-      fitView(params)
+    fitView: (params = { padding: 0.1 }) => {
+      viewportHelper.fitView(params)
     },
-    zoomIn: async (options) => {
-      const { zoomIn } = await paneReady()
-      zoomIn(options)
+    zoomIn: (options) => {
+      viewportHelper.zoomIn(options)
     },
-    zoomOut: async (options) => {
-      const { zoomOut } = await paneReady()
-      zoomOut(options)
+    zoomOut: (options) => {
+      viewportHelper.zoomOut(options)
     },
-    zoomTo: async (zoomLevel, options) => {
-      const { zoomTo } = await paneReady()
-      zoomTo(zoomLevel, options)
+    zoomTo: (zoomLevel, options) => {
+      viewportHelper.zoomTo(zoomLevel, options)
     },
-    setTransform: async (transform, options) => {
-      const { setTransform } = await paneReady()
-      setTransform(transform, options)
+    setTransform: (transform, options) => {
+      viewportHelper.setTransform(transform, options)
     },
     getTransform: () => ({
       x: state.viewport.x,
       y: state.viewport.y,
       zoom: state.viewport.zoom,
     }),
-    setCenter: async (x, y, options) => {
-      const { setCenter } = await paneReady()
-      setCenter(x, y, options)
+    setCenter: (x, y, options) => {
+      viewportHelper.setCenter(x, y, options)
     },
-    fitBounds: async (bounds, options) => {
-      const { fitBounds } = await paneReady()
-      fitBounds(bounds, options)
+    fitBounds: (bounds, options) => {
+      viewportHelper.fitBounds(bounds, options)
     },
     project: (position) => pointToRendererPoint(position, state.viewport, state.snapToGrid, state.snapGrid),
     toObject,