new design for left click and wheel (#5566)

* new design for left click and wheel

* update snap

* fix import

* fix test

* default value

* fix test

* Update test expectations [skip ci]

---------

Co-authored-by: github-actions <github-actions@github.com>

src/lib/litegraph/src/LGraphCanvas.ts

@@ -2348,7 +2348,7 @@ export class LGraphCanvas
     if (
       ctrlOrMeta &&
       !e.altKey &&
-      LiteGraph.canvasNavigationMode === 'legacy'
+      LiteGraph.leftMouseClickBehavior === 'panning'
     ) {
       this.#setupNodeSelectionDrag(e, pointer, node)
 
@@ -2616,8 +2616,8 @@ export class LGraphCanvas
       !pointer.onDrag &&
       this.allow_dragcanvas
     ) {
-      // allow dragging canvas if canvas is not in standard, or read-only (pan mode in standard)
-      if (LiteGraph.canvasNavigationMode !== 'standard' || this.read_only) {
+      // allow dragging canvas based on leftMouseClickBehavior or read-only mode
+      if (LiteGraph.leftMouseClickBehavior === 'panning' || this.read_only) {
         pointer.onClick = () => this.processSelect(null, e)
         pointer.finally = () => (this.dragging_canvas = false)
         this.dragging_canvas = true
@@ -3629,8 +3629,8 @@ export class LGraphCanvas
       e.ctrlKey || (e.metaKey && navigator.platform.includes('Mac'))
     const isZoomModifier = isCtrlOrMacMeta && !e.altKey && !e.shiftKey
 
-    if (isZoomModifier || LiteGraph.canvasNavigationMode === 'legacy') {
-      // Legacy mode or standard mode with ctrl - use wheel for zoom
+    if (isZoomModifier || LiteGraph.mouseWheelScroll === 'zoom') {
+      // Zoom mode or modifier key pressed - use wheel for zoom
       if (isTrackpad) {
         // Trackpad gesture - use smooth scaling
         scale *= 1 + e.deltaY * (1 - this.zoom_speed) * 0.18
@@ -3645,7 +3645,6 @@ export class LGraphCanvas
         this.ds.changeScale(scale, [e.clientX, e.clientY])
       }
     } else {
-      // Standard mode without ctrl - use wheel / gestures to pan
       // Trackpads and mice work on significantly different scales
       const factor = isTrackpad ? 0.18 : 0.008_333