default tool should be selection not hand in view mode

src/actions/actionCanvas.tsx

@@ -18,6 +18,7 @@ import {
   getDefaultAppState,
   isEraserActive,
   isHandToolActive,
+  isLaserPointerActive,
 } from "../appState";
 import { DEFAULT_CANVAS_BACKGROUND_PICKS } from "../colors";
 import { Bounds } from "../element/bounds";
@@ -439,3 +440,44 @@ export const actionToggleHandTool = register({
   },
   keyTest: (event) => event.key === KEYS.H,
 });
+
+export const actionToggleLaserPointer = register({
+  name: "toggleLaserPointerTool",
+  viewMode: true,
+  trackEvent: { category: "menu" },
+  perform(elements, appState, _, app) {
+    let activeTool: AppState["activeTool"];
+
+    if (isLaserPointerActive(appState)) {
+      activeTool = updateActiveTool(appState, {
+        ...(appState.activeTool.lastActiveTool || {
+          type: appState.viewModeEnabled ? "hand" : "selection",
+        }),
+        lastActiveToolBeforeEraser: null,
+      });
+      setCursor(
+        app.interactiveCanvas,
+        appState.viewModeEnabled ? CURSOR_TYPE.GRAB : CURSOR_TYPE.POINTER,
+      );
+    } else {
+      activeTool = updateActiveTool(appState, {
+        type: "laser",
+        lastActiveToolBeforeEraser: appState.activeTool,
+      });
+      setCursor(app.interactiveCanvas, CURSOR_TYPE.CROSSHAIR);
+    }
+
+    return {
+      appState: {
+        ...appState,
+        selectedElementIds: {},
+        selectedGroupIds: {},
+        activeEmbeddable: null,
+        activeTool,
+      },
+      commitToHistory: true,
+    };
+  },
+  checked: (appState) => appState.activeTool.type === "laser",
+  contextItemLabel: "labels.laser",
+});

src/actions/shortcuts.ts

@@ -36,6 +36,7 @@ export type ShortcutName =
       | "flipVertical"
       | "hyperlink"
       | "toggleElementLock"
+      | "toggleLaserPointerTool"
     >
   | "saveScene"
   | "imageExport";
@@ -83,6 +84,7 @@ const shortcutMap: Record<ShortcutName, string[]> = {
   viewMode: [getShortcutKey("Alt+R")],
   hyperlink: [getShortcutKey("CtrlOrCmd+K")],
   toggleElementLock: [getShortcutKey("CtrlOrCmd+Shift+L")],
+  toggleLaserPointerTool: [getShortcutKey("K")],
 };
 
 export const getShortcutFromShortcutName = (name: ShortcutName) => {

src/actions/types.ts

@@ -124,7 +124,8 @@ export type ActionName =
   | "setFrameAsActiveTool"
   | "setEmbeddableAsActiveTool"
   | "createContainerFromText"
-  | "wrapTextInContainer";
+  | "wrapTextInContainer"
+  | "toggleLaserPointerTool";
 
 export type PanelComponentProps = {
   elements: readonly ExcalidrawElement[];

src/appState.ts

@@ -266,3 +266,11 @@ export const isHandToolActive = ({
 }) => {
   return activeTool.type === "hand";
 };
+
+export const isLaserPointerActive = ({
+  activeTool,
+}: {
+  activeTool: AppState["activeTool"];
+}) => {
+  return activeTool.type === "laser";
+};

src/components/App.tsx

@@ -46,6 +46,7 @@ import {
   getDefaultAppState,
   isEraserActive,
   isHandToolActive,
+  isLaserPointerActive,
 } from "../appState";
 import { parseClipboard } from "../clipboard";
 import {
@@ -343,7 +344,11 @@ import {
   actionRemoveAllElementsFromFrame,
   actionSelectAllElementsInFrame,
 } from "../actions/actionFrame";
-import { actionToggleHandTool, zoomToFit } from "../actions/actionCanvas";
+import {
+  actionToggleHandTool,
+  zoomToFit,
+  actionToggleLaserPointer,
+} from "../actions/actionCanvas";
 import { jotaiStore } from "../jotai";
 import { activeConfirmDialogAtom } from "./ActiveConfirmDialog";
 import {
@@ -2910,7 +2915,22 @@ class App extends React.Component<AppProps, AppState> {
         return;
       }
 
+      if (event.key === KEYS.K && !event.altKey && !event[KEYS.CTRL_OR_CMD]) {
+        if (isLaserPointerActive(this.state)) {
+          this.setActiveTool({
+            type: "selection",
+          });
+        } else {
+          this.setActiveTool({ type: "laser" });
+        }
+        return;
+      }
+
       if (this.state.viewModeEnabled) {
+        //revert to hand in case a key is pressed (K is handled above)
+        if (event.key !== KEYS.K) {
+          this.setActiveTool({ type: "selection" });
+        }
         return;
       }
 
@@ -3060,15 +3080,6 @@ class App extends React.Component<AppProps, AppState> {
         }
       }
 
-      if (event.key === KEYS.K && !event.altKey && !event[KEYS.CTRL_OR_CMD]) {
-        if (this.state.activeTool.type === "laser") {
-          this.setActiveTool({ type: "selection" });
-        } else {
-          this.setActiveTool({ type: "laser" });
-        }
-        return;
-      }
-
       if (
         event[KEYS.CTRL_OR_CMD] &&
         (event.key === KEYS.BACKSPACE || event.key === KEYS.DELETE)
@@ -3612,6 +3623,18 @@ class App extends React.Component<AppProps, AppState> {
     if (this.state.multiElement) {
       return;
     }
+
+    if (this.state.viewModeEnabled) {
+      if (this.state.activeTool.type === "laser") {
+        this.setActiveTool({ type: "selection" });
+        setCursor(this.interactiveCanvas, CURSOR_TYPE.GRAB);
+      } else {
+        this.setActiveTool({ type: "laser" });
+        setCursor(this.interactiveCanvas, CURSOR_TYPE.CROSSHAIR);
+      }
+      return;
+    }
+
     // we should only be able to double click when mode is selection
     if (this.state.activeTool.type !== "selection") {
       return;
@@ -4739,7 +4762,7 @@ class App extends React.Component<AppProps, AppState> {
         (event.button === POINTER_BUTTON.WHEEL ||
           (event.button === POINTER_BUTTON.MAIN && isHoldingSpace) ||
           isHandToolActive(this.state) ||
-          this.state.viewModeEnabled)
+          (this.state.viewModeEnabled && !isLaserPointerActive(this.state)))
       ) ||
       isTextElement(this.state.editingElement)
     ) {
@@ -8143,6 +8166,7 @@ class App extends React.Component<AppProps, AppState> {
           actionToggleZenMode,
           actionToggleViewMode,
           actionToggleStats,
+          actionToggleLaserPointer,
         ];
       }
 

src/components/LaserTool/LaserPathManager.ts

@@ -91,7 +91,7 @@ export class LaserPathManager {
   private collaboratorsState: Map<string, CollabolatorState> = new Map();
 
   private rafId: number | undefined;
-  private lastUpdate = 0;
+  private isDrawing = false;
   private container: SVGSVGElement | undefined;
 
   constructor(private app: App) {
@@ -100,7 +100,7 @@ export class LaserPathManager {
 
   destroy() {
     this.stop();
-    this.lastUpdate = 0;
+    this.isDrawing = false;
     this.ownState = instantiateCollabolatorState();
     this.collaboratorsState = new Map();
   }
@@ -127,7 +127,7 @@ export class LaserPathManager {
   }
 
   private updatePath(state: CollabolatorState) {
-    this.lastUpdate = performance.now();
+    this.isDrawing = true;
 
     if (!this.isRunning) {
       this.start();
@@ -160,7 +160,7 @@ export class LaserPathManager {
 
     this.updateCollabolatorsState();
 
-    if (performance.now() - this.lastUpdate < DECAY_TIME * 2) {
+    if (this.isDrawing) {
       this.update();
     } else {
       this.isRunning = false;
@@ -250,6 +250,8 @@ export class LaserPathManager {
       return;
     }
 
+    let somePathsExist = false;
+
     for (const [key, state] of this.collaboratorsState.entries()) {
       if (!this.app.state.collaborators.has(key)) {
         state.svg.remove();
@@ -269,6 +271,10 @@ export class LaserPathManager {
         paths += ` ${this.draw(state.currentPath)}`;
       }
 
+      if (paths.trim()) {
+        somePathsExist = true;
+      }
+
       state.svg.setAttribute("d", paths);
       state.svg.setAttribute("fill", getClientColor(key));
     }
@@ -287,7 +293,17 @@ export class LaserPathManager {
       paths += ` ${this.draw(this.ownState.currentPath)}`;
     }
 
+    paths = paths.trim();
+
+    if (paths) {
+      somePathsExist = true;
+    }
+
     this.ownState.svg.setAttribute("d", paths);
     this.ownState.svg.setAttribute("fill", "red");
+
+    if (!somePathsExist) {
+      this.isDrawing = false;
+    }
   }
 }

src/components/canvases/InteractiveCanvas.tsx

@@ -155,9 +155,7 @@ const InteractiveCanvas = (props: InteractiveCanvasProps) => {
       onPointerCancel={props.onPointerCancel}
       onTouchMove={props.onTouchMove}
       onPointerDown={props.onPointerDown}
-      onDoubleClick={
+      onDoubleClick={props.onDoubleClick}
-        props.appState.viewModeEnabled ? undefined : props.onDoubleClick
-      }
     >
       {t("labels.drawingCanvas")}
     </canvas>

src/locales/en.json

@@ -1,5 +1,6 @@
 {
   "labels": {
+    "laser": "Toggle laser pointer",
     "paste": "Paste",
     "pasteAsPlaintext": "Paste as plaintext",
     "pasteCharts": "Paste charts",

yarn.lock

@@ -5994,10 +5994,19 @@ portfinder@^1.0.28:
     debug "^3.2.7"
     mkdirp "^0.5.6"
 
-postcss@^8.4.23, postcss@^8.4.24:
+postcss@^8.4.23:
-  version "8.4.31"
+  version "8.4.24"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.31.tgz#92b451050a9f914da6755af352bdc0192508656d"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.24.tgz#f714dba9b2284be3cc07dbd2fc57ee4dc972d2df"
-  integrity sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ==
+  integrity sha512-M0RzbcI0sO/XJNucsGjvWU9ERWxb/ytp1w6dKtxTKgixdtQDq4rmx/g8W1hnaheq9jgwL/oyEdH5Bc4WwJKMqg==
+  dependencies:
+    nanoid "^3.3.6"
+    picocolors "^1.0.0"
+    source-map-js "^1.0.2"
+
+postcss@^8.4.24:
+  version "8.4.25"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.25.tgz#4a133f5e379eda7f61e906c3b1aaa9b81292726f"
+  integrity sha512-7taJ/8t2av0Z+sQEvNzCkpDynl0tX3uJMCODi6nT3PfASC7dYCWV9aQ+uiCf+KBD4SEFcu+GvJdGdwzQ6OSjCw==
   dependencies:
     nanoid "^3.3.6"
     picocolors "^1.0.0"