[refactor] Simplify Vue node resize to bottom-right corner only (#7063)

## Summary

Temporarily simplifies the resize logic to only work on bottom right
corner and eliminates edge cases where corner resizing caused position
drift issues.

- Remove multi-corner resize handles in favor of bottom-right only
- Delete resizeMath.ts and its tests (no longer needed)
- Simplify useNodeResize to only handle bottom-right resize
- Remove position tracking from resize callback

---------

Co-authored-by: github-actions <[email protected]>

Author: christian-byrne

browser_tests/tests/vueNodes/nodeStates/colors.spec.ts-snapshots/vue-node-custom-colors-dark-all-colors-chromium-linux.png

@@ -117,17 +117,14 @@
       </div>
     </template>
 
-    <!-- Resize handles -->
-    <template v-if="!isCollapsed">
-      <div
-        v-for="handle in cornerResizeHandles"
-        :key="handle.id"
-        role="button"
-        :aria-label="handle.ariaLabel"
-        :class="cn(baseResizeHandleClasses, handle.classes)"
-        @pointerdown.stop="handleResizePointerDown(handle.direction)($event)"
-      />
-    </template>
+    <!-- Resize handle (bottom-right only) -->
+    <div
+      v-if="!isCollapsed"
+      role="button"
+      :aria-label="t('g.resizeFromBottomRight')"
+      :class="cn(baseResizeHandleClasses, 'right-0 bottom-0 cursor-se-resize')"
+      @pointerdown.stop="handleResizePointerDown"
+    />
   </div>
 </template>
 
@@ -171,7 +168,6 @@ import {
 } from '@/utils/graphTraversalUtil'
 import { cn } from '@/utils/tailwindUtil'
 
-import type { ResizeHandleDirection } from '../interactions/resize/resizeMath'
 import { useNodeResize } from '../interactions/resize/useNodeResize'
 import LivePreview from './LivePreview.vue'
 import NodeContent from './NodeContent.vue'
@@ -263,7 +259,7 @@ onErrorCaptured((error) => {
   return false // Prevent error propagation
 })
 
-const { position, size, zIndex, moveNodeTo } = useNodeLayout(() => nodeData.id)
+const { position, size, zIndex } = useNodeLayout(() => nodeData.id)
 const { pointerHandlers } = useNodePointerInteractions(() => nodeData.id)
 const { onPointerdown, ...remainingPointerHandlers } = pointerHandlers
 const { startDrag } = useNodeDrag()
@@ -314,41 +310,6 @@ onMounted(() => {
 
 const baseResizeHandleClasses =
   'absolute h-3 w-3 opacity-0 pointer-events-auto focus-visible:outline focus-visible:outline-2 focus-visible:outline-white/40'
-const POSITION_EPSILON = 0.01
-
-type CornerResizeHandle = {
-  id: string
-  direction: ResizeHandleDirection
-  classes: string
-  ariaLabel: string
-}
-
-const cornerResizeHandles: CornerResizeHandle[] = [
-  {
-    id: 'se',
-    direction: { horizontal: 'right', vertical: 'bottom' },
-    classes: 'right-0 bottom-0 cursor-se-resize',
-    ariaLabel: t('g.resizeFromBottomRight')
-  },
-  {
-    id: 'ne',
-    direction: { horizontal: 'right', vertical: 'top' },
-    classes: 'right-0 top-0 cursor-ne-resize',
-    ariaLabel: t('g.resizeFromTopRight')
-  },
-  {
-    id: 'sw',
-    direction: { horizontal: 'left', vertical: 'bottom' },
-    classes: 'left-0 bottom-0 cursor-sw-resize',
-    ariaLabel: t('g.resizeFromBottomLeft')
-  },
-  {
-    id: 'nw',
-    direction: { horizontal: 'left', vertical: 'top' },
-    classes: 'left-0 top-0 cursor-nw-resize',
-    ariaLabel: t('g.resizeFromTopLeft')
-  }
-]
 
 const MIN_NODE_WIDTH = 225
 
@@ -361,22 +322,11 @@ const { startResize } = useNodeResize((result, element) => {
   // Apply size directly to DOM element - ResizeObserver will pick this up
   element.style.setProperty('--node-width', `${clampedWidth}px`)
   element.style.setProperty('--node-height', `${result.size.height}px`)
-
-  const currentPosition = position.value
-  const deltaX = Math.abs(result.position.x - currentPosition.x)
-  const deltaY = Math.abs(result.position.y - currentPosition.y)
-
-  if (deltaX > POSITION_EPSILON || deltaY > POSITION_EPSILON) {
-    moveNodeTo(result.position)
-  }
 })
 
-const handleResizePointerDown = (direction: ResizeHandleDirection) => {
-  return (event: PointerEvent) => {
-    if (nodeData.flags?.pinned) return
-
-    startResize(event, direction, { ...position.value })
-  }
+const handleResizePointerDown = (event: PointerEvent) => {
+  if (nodeData.flags?.pinned) return
+  startResize(event)
 }
 
 watch(isCollapsed, (collapsed) => {

browser_tests/tests/vueNodes/nodeStates/colors.spec.ts-snapshots/vue-node-custom-colors-light-all-colors-chromium-linux.png

@@ -4,18 +4,14 @@ import { ref } from 'vue'
 import type { Point, Size } from '@/renderer/core/layout/types'
 import { useNodeSnap } from '@/renderer/extensions/vueNodes/composables/useNodeSnap'
 import { useShiftKeySync } from '@/renderer/extensions/vueNodes/composables/useShiftKeySync'
-
-import type { ResizeHandleDirection } from './resizeMath'
-import { createResizeSession, toCanvasDelta } from './resizeMath'
 import { useTransformState } from '@/renderer/core/layout/transform/useTransformState'
 
 interface ResizeCallbackPayload {
   size: Size
-  position: Point
 }
 
 /**
- * Composable for node resizing functionality
+ * Composable for node resizing functionality (bottom-right corner only)
  *
  * Provides resize handle interaction that integrates with the layout system.
  * Handles pointer capture, coordinate calculations, and size constraints.
@@ -27,28 +23,15 @@ export function useNodeResize(
 
   const isResizing = ref(false)
   const resizeStartPointer = ref<Point | null>(null)
-  const resizeSession = ref<
-    | ((
-        delta: Point,
-        snapFn?: (size: Size) => Size
-      ) => {
-        size: Size
-        position: Point
-      })
-    | null
-  >(null)
+  const resizeStartSize = ref<Size | null>(null)
 
   // Snap-to-grid functionality
   const { shouldSnap, applySnapToSize } = useNodeSnap()
 
   // Shift key sync for LiteGraph canvas preview
   const { trackShiftKey } = useShiftKeySync()
 
-  const startResize = (
-    event: PointerEvent,
-    handle: ResizeHandleDirection,
-    startPosition: Point
-  ) => {
+  const startResize = (event: PointerEvent) => {
     event.preventDefault()
     event.stopPropagation()
 
@@ -74,45 +57,44 @@ export function useNodeResize(
 
     isResizing.value = true
     resizeStartPointer.value = { x: event.clientX, y: event.clientY }
-    resizeSession.value = createResizeSession({
-      startSize,
-      startPosition: { ...startPosition },
-      handle
-    })
+    resizeStartSize.value = startSize
 
     const handlePointerMove = (moveEvent: PointerEvent) => {
       if (
         !isResizing.value ||
         !resizeStartPointer.value ||
-        !resizeSession.value
-      )
+        !resizeStartSize.value
+      ) {
         return
+      }
+
+      const scale = transformState.camera.z
+      const deltaX =
+        (moveEvent.clientX - resizeStartPointer.value.x) / (scale || 1)
+      const deltaY =
+        (moveEvent.clientY - resizeStartPointer.value.y) / (scale || 1)
 
-      const startPointer = resizeStartPointer.value
-      const session = resizeSession.value
+      let newSize: Size = {
+        width: resizeStartSize.value.width + deltaX,
+        height: resizeStartSize.value.height + deltaY
+      }
 
-      const delta = toCanvasDelta(
-        startPointer,
-        { x: moveEvent.clientX, y: moveEvent.clientY },
-        transformState.camera.z
-      )
+      // Apply snap if shift is held
+      if (shouldSnap(moveEvent)) {
+        newSize = applySnapToSize(newSize)
+      }
 
       const nodeElement = target.closest('[data-node-id]')
       if (nodeElement instanceof HTMLElement) {
-        const outcome = session(
-          delta,
-          shouldSnap(moveEvent) ? applySnapToSize : undefined
-        )
-
-        resizeCallback(outcome, nodeElement)
+        resizeCallback({ size: newSize }, nodeElement)
       }
     }
 
     const handlePointerUp = (upEvent: PointerEvent) => {
       if (isResizing.value) {
         isResizing.value = false
         resizeStartPointer.value = null
-        resizeSession.value = null
+        resizeStartSize.value = null
 
         // Stop tracking shift key state
         stopShiftSync()