From cef6852d597ce67637466afb36c3498dc84211f6 Mon Sep 17 00:00:00 2001
From: Stanley Yip <stanley_yip@brown.edu>
Date: Wed, 8 Jan 2020 19:48:28 -0500
Subject: gestures are now overlayed and can span collections/panes!

---
 src/pen-gestures/GestureUtils.ts | 28 ++++++++++++++++++++++++++--
 1 file changed, 26 insertions(+), 2 deletions(-)

(limited to 'src/pen-gestures')

diff --git a/src/pen-gestures/GestureUtils.ts b/src/pen-gestures/GestureUtils.ts
index 59a85b66b..4edcfa623 100644
--- a/src/pen-gestures/GestureUtils.ts
+++ b/src/pen-gestures/GestureUtils.ts
@@ -1,19 +1,43 @@
 import { NDollarRecognizer } from "./ndollar";
 import { Type } from "typescript";
-import { InkField } from "../new_fields/InkField";
+import { InkField, PointData } from "../new_fields/InkField";
 import { Docs } from "../client/documents/Documents";
 import { Doc, WidthSym, HeightSym } from "../new_fields/Doc";
 import { NumCast } from "../new_fields/Types";
 import { CollectionFreeFormView } from "../client/views/collections/collectionFreeForm/CollectionFreeFormView";
+import { Rect } from "react-measure";
 
 export namespace GestureUtils {
     namespace GestureDataTypes {
         export type BoxData = Array<Doc>;
     }
 
+    export class GestureEvent {
+        constructor(
+            readonly gesture: Gestures,
+            readonly points: PointData[],
+            readonly bounds: Rect,
+            readonly callbackFn?: Function
+        ) { }
+    }
+
+    export interface GestureEventDisposer { (): void; }
+
+    export function MakeGestureTarget(
+        element: HTMLElement,
+        func: (e: Event, ge: GestureEvent) => void
+    ): GestureEventDisposer {
+        const handler = (e: Event) => func(e, (e as CustomEvent<GestureEvent>).detail);
+        element.addEventListener("dashOnGesture", handler);
+        return () => {
+            element.removeEventListener("dashOnGesture", handler);
+        }
+    }
+
     export enum Gestures {
         Box = "box",
-        Line = "line"
+        Line = "line",
+        Stroke = "stroke"
     }
 
     export const GestureRecognizer = new NDollarRecognizer(false);
-- 
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