adds aligned dragging / cloning

hooks/useKeyboardEvents.ts

@@ -15,7 +15,11 @@ export default function useKeyboardEvents() {
         }
       }
 
-      if (e.altKey) {
+      if (e.key === "Shift") {
+        state.send("PRESSED_SHIFT_KEY", getKeyboardEventInfo(e))
+      }
+
+      if (e.key === "Alt") {
         state.send("PRESSED_ALT_KEY", getKeyboardEventInfo(e))
       }
 
@@ -66,12 +70,12 @@ export default function useKeyboardEvents() {
     }
 
     function handleKeyUp(e: KeyboardEvent) {
-      if (e.key === "Escape") {
-        state.send("CANCELLED")
+      if (e.key === "Shift") {
+        state.send("RELEASED_SHIFT_KEY", getKeyboardEventInfo(e))
       }
 
-      if (e.altKey) {
-        state.send("RELEASED_ALT_KEY")
+      if (e.key === "Alt") {
+        state.send("RELEASED_ALT_KEY", getKeyboardEventInfo(e))
       }
 
       state.send("RELEASED_KEY", getKeyboardEventInfo(e))

state/commands/translate.ts

@@ -19,16 +19,14 @@ export default function translateCommand(
         if (initial) return
 
         const { shapes } = data.document.pages[after.currentPageId]
-        const { initialShapes, clones } = after
+        const { initialShapes } = after
+        const { clones } = before // !
 
         data.selectedIds.clear()
 
         for (let id in initialShapes) {
-          if (isCloning) {
-            shapes[id] = initialShapes[id]
-          } else {
           shapes[id].point = initialShapes[id].point
-          }
+          shapes[clones[id].id] = clones[id]
           data.selectedIds.add(id)
         }
       },

state/sessions/translate-session.ts

@@ -11,54 +11,47 @@ export default class TranslateSession extends BaseSession {
   snapshot: TranslateSnapshot
   isCloning = false
 
-  constructor(data: Data, point: number[]) {
+  constructor(data: Data, point: number[], isCloning = false) {
     super(data)
     this.origin = point
     this.snapshot = getTranslateSnapshot(data)
   }
 
-  update(data: Data, point: number[], isCloning: boolean) {
+  update(data: Data, point: number[], isAligned: boolean, isCloning: boolean) {
     const { currentPageId, clones, initialShapes } = this.snapshot
-    const { document } = data
-    const { shapes } = document.pages[this.snapshot.currentPageId]
-
+    const { shapes } = data.document.pages[currentPageId]
     const delta = vec.vec(this.origin, point)
 
-    if (isCloning && !this.isCloning) {
-      // Enter cloning state, create clones at shape points and move shapes
-      // back to initial point.
-      this.isCloning = true
-      data.selectedIds.clear()
-      for (let id in clones) {
-        const clone = clones[id]
-        data.selectedIds.add(clone.id)
-        shapes[id].point = initialShapes[id].point
-        data.document.pages[currentPageId].shapes[clone.id] = clone
-      }
-    } else if (!isCloning && this.isCloning) {
-      // Exit cloning state, delete up clones and move shapes to clone points
-      this.isCloning = false
-      data.selectedIds.clear()
-      for (let id in clones) {
-        const clone = clones[id]
-        data.selectedIds.add(id)
-        delete data.document.pages[currentPageId].shapes[clone.id]
+    if (isAligned) {
+      if (Math.abs(delta[0]) < Math.abs(delta[1])) {
+        delta[0] = 0
+      } else {
+        delta[1] = 0
+      }
+    }
+
+    if (isCloning && !this.isCloning) {
+      this.isCloning = true
+      for (let id in clones) {
+        const clone = clones[id]
+        shapes[clone.id] = clone
+      }
+    } else if (!isCloning && this.isCloning) {
+      this.isCloning = false
+      for (let id in clones) {
+        const clone = clones[id]
+        delete shapes[clone.id]
       }
     }
 
-    // Calculate the new points and update data
     for (let id in initialShapes) {
-      const point = vec.add(initialShapes[id].point, delta)
-      const targetId = this.isCloning ? clones[id].id : id
-      document.pages[currentPageId].shapes[targetId].point = point
+      shapes[id].point = vec.add(initialShapes[id].point, delta)
     }
   }
 
   cancel(data: Data) {
-    const { document } = data
     const { initialShapes, clones, currentPageId } = this.snapshot
-
-    const { shapes } = document.pages[currentPageId]
+    const { shapes } = data.document.pages[currentPageId]
 
     for (let id in initialShapes) {
       shapes[id].point = initialShapes[id].point

state/state.ts

@@ -115,15 +115,10 @@ const state = createState({
                   "setPointedId",
                   {
                     if: "isPressingShiftKey",
-                    then: {
-                      if: "isPointedShapeSelected",
-                      do: "pullPointedIdFromSelectedIds",
-                      else: {
-                        do: "pushPointedIdToSelectedIds",
+                    unless: "isPointedShapeSelected",
+                    do: ["pushPointedIdToSelectedIds", "clearPointedId"],
                     to: "pointingBounds",
                   },
-                    },
-                    else: [
                   {
                     unless: "isPointedShapeSelected",
                     do: ["clearSelectedIds", "pushPointedIdToSelectedIds"],
@@ -133,16 +128,21 @@ const state = createState({
                   },
                 ],
               },
-                ],
-              },
             },
             pointingBounds: {
               on: {
                 STOPPED_POINTING: [
                   {
-                    unless: ["isPointingBounds", "isPressingShiftKey"],
+                    if: "isPressingShiftKey",
+                    then: {
+                      if: "isPointedShapeSelected",
+                      do: "pullPointedIdFromSelectedIds",
+                    },
+                    else: {
+                      if: "isPointingBounds",
                       do: ["clearSelectedIds", "pushPointedIdToSelectedIds"],
                     },
+                  },
                   { to: "notPointing" },
                 ],
                 MOVED_POINTER: {
@@ -175,8 +175,10 @@ const state = createState({
               on: {
                 MOVED_POINTER: "updateTranslateSession",
                 PANNED_CAMERA: "updateTranslateSession",
-                PRESSED_ALT_KEY: "updateCloningTranslateSession",
-                RELEASED_ALT_KEY: "updateCloningTranslateSession",
+                PRESSED_SHIFT_KEY: "keyUpdateTranslateSession",
+                RELEASED_SHIFT_KEY: "keyUpdateTranslateSession",
+                PRESSED_ALT_KEY: "keyUpdateTranslateSession",
+                RELEASED_ALT_KEY: "keyUpdateTranslateSession",
                 STOPPED_POINTING: { do: "completeSession", to: "selecting" },
                 CANCELLED: { do: "cancelSession", to: "selecting" },
               },
@@ -525,18 +527,29 @@ const state = createState({
     startTranslateSession(data, payload: PointerInfo) {
       session = new Sessions.TranslateSession(
         data,
-        screenToWorld(payload.point, data)
+        screenToWorld(payload.point, data),
+        payload.altKey
       )
     },
-    updateCloningTranslateSession(data, payload: { altKey: boolean }) {
+    keyUpdateTranslateSession(
+      data,
+      payload: { shiftKey: boolean; altKey: boolean }
+    ) {
       session.update(
         data,
         screenToWorld(inputs.pointer.point, data),
+        payload.shiftKey,
         payload.altKey
       )
     },
     updateTranslateSession(data, payload: PointerInfo) {
-      session.update(data, screenToWorld(payload.point, data), payload.altKey)
+      console.log(payload.altKey)
+      session.update(
+        data,
+        screenToWorld(payload.point, data),
+        payload.shiftKey,
+        payload.altKey
+      )
     },
 
     // Dragging / Translating
@@ -761,6 +774,12 @@ const state = createState({
       if (selectedIds.size === 0) return null
 
       if (selectedIds.size === 1) {
+        if (!shapes[0]) {
+          console.error("Could not find that shape! Clearing selected IDs.")
+          data.selectedIds.clear()
+          return null
+        }
+
         const shapeUtils = getShapeUtils(shapes[0])
         if (!shapeUtils.canTransform) return null
         return shapeUtils.getBounds(shapes[0])