From 67316c700980fe653c48840407dc9d66a7ed8a2b Mon Sep 17 00:00:00 2001
From: bobzel <zzzman@gmail.com>
Date: Fri, 6 Jan 2023 00:35:43 -0500
Subject: added zoom box highlighting of text anchors in pdf/web pages for
 link/pres following. Added serial/parallel option for presentation group with
 up.  Added direct pinning of text seletions to trails.  fixed 'hide' option
 for preselements to work with hidebefore/after

---
 src/client/views/MarqueeAnnotator.tsx | 42 ++++++++++++++++++++++-------------
 1 file changed, 26 insertions(+), 16 deletions(-)

(limited to 'src/client/views/MarqueeAnnotator.tsx')

diff --git a/src/client/views/MarqueeAnnotator.tsx b/src/client/views/MarqueeAnnotator.tsx
index 2fdb59361..bf1242346 100644
--- a/src/client/views/MarqueeAnnotator.tsx
+++ b/src/client/views/MarqueeAnnotator.tsx
@@ -18,7 +18,7 @@ const _global = (window /* browser */ || global) /* node */ as any;
 
 export interface MarqueeAnnotatorProps {
     rootDoc: Doc;
-    down: number[];
+    down?: number[];
     iframe?: () => undefined | HTMLIFrameElement;
     scrollTop: number;
     scaling?: () => number;
@@ -45,6 +45,17 @@ export class MarqueeAnnotator extends React.Component<MarqueeAnnotatorProps> {
     @observable private _width: number = 0;
     @observable private _height: number = 0;
 
+    constructor(props: any) {
+        super(props);
+
+        AnchorMenu.Instance.OnCrop = (e: PointerEvent) => this.props.anchorMenuCrop?.(this.highlight('', true), true);
+        AnchorMenu.Instance.OnClick = (e: PointerEvent) => this.props.anchorMenuClick?.()?.(this.highlight(this.props.highlightDragSrcColor ?? 'rgba(173, 216, 230, 0.75)', true));
+        AnchorMenu.Instance.OnAudio = unimplementedFunction;
+        AnchorMenu.Instance.Highlight = this.highlight;
+        AnchorMenu.Instance.GetAnchor = (savedAnnotations?: ObservableMap<number, HTMLDivElement[]>) => this.highlight('rgba(173, 216, 230, 0.75)', true, savedAnnotations);
+        AnchorMenu.Instance.onMakeAnchor = AnchorMenu.Instance.GetAnchor;
+    }
+
     @action
     static clearAnnotations(savedAnnotations: ObservableMap<number, HTMLDivElement[]>) {
         AnchorMenu.Instance.Status = 'marquee';
@@ -54,24 +65,21 @@ export class MarqueeAnnotator extends React.Component<MarqueeAnnotatorProps> {
         savedAnnotations.clear();
     }
 
-    @action componentDidMount() {
-        // set marquee x and y positions to the spatially transformed position
-        const boundingRect = this.props.mainCont.getBoundingClientRect();
-        this._startX = this._left = (this.props.down[0] - boundingRect.left) * (this.props.mainCont.offsetWidth / boundingRect.width);
-        this._startY = this._top = (this.props.down[1] - boundingRect.top) * (this.props.mainCont.offsetHeight / boundingRect.height) + this.props.mainCont.scrollTop;
-        this._height = this._width = 0;
+    @action gotDownPoint() {
+        if (!this._width && !this._height) {
+            const downPt = this.props.down!;
+            // set marquee x and y positions to the spatially transformed position
+            const boundingRect = this.props.mainCont.getBoundingClientRect();
+            this._startX = this._left = (downPt[0] - boundingRect.left) * (this.props.mainCont.offsetWidth / boundingRect.width);
+            this._startY = this._top = (downPt[1] - boundingRect.top) * (this.props.mainCont.offsetHeight / boundingRect.height) + this.props.mainCont.scrollTop;
+        }
 
         const doc = this.props.iframe?.()?.contentDocument ?? document;
+        doc.removeEventListener('pointermove', this.onSelectMove);
+        doc.removeEventListener('pointerup', this.onSelectEnd);
         doc.addEventListener('pointermove', this.onSelectMove);
         doc.addEventListener('pointerup', this.onSelectEnd);
 
-        AnchorMenu.Instance.OnCrop = (e: PointerEvent) => this.props.anchorMenuCrop?.(this.highlight('', true), true);
-        AnchorMenu.Instance.OnClick = (e: PointerEvent) => this.props.anchorMenuClick?.()?.(this.highlight(this.props.highlightDragSrcColor ?? 'rgba(173, 216, 230, 0.75)', true));
-        AnchorMenu.Instance.OnAudio = unimplementedFunction;
-        AnchorMenu.Instance.Highlight = this.highlight;
-        AnchorMenu.Instance.GetAnchor = (savedAnnotations?: ObservableMap<number, HTMLDivElement[]>) => this.highlight('rgba(173, 216, 230, 0.75)', true, savedAnnotations);
-        AnchorMenu.Instance.onMakeAnchor = AnchorMenu.Instance.GetAnchor;
-
         /**
          * This function is used by the AnchorMenu to create an anchor highlight and a new linked text annotation.
          * It also initiates a Drag/Drop interaction to place the text annotation.
@@ -125,7 +133,7 @@ export class MarqueeAnnotator extends React.Component<MarqueeAnnotatorProps> {
                   });
               });
     }
-    componentWillUnmount() {
+    releaseDownPt() {
         const doc = this.props.iframe?.()?.contentDocument ?? document;
         doc.removeEventListener('pointermove', this.onSelectMove);
         doc.removeEventListener('pointerup', this.onSelectEnd);
@@ -259,6 +267,7 @@ export class MarqueeAnnotator extends React.Component<MarqueeAnnotatorProps> {
                 this.highlight('rgba(245, 230, 95, 0.75)', false); // yellowish highlight color for highlighted text (should match AnchorMenu's highlight color)
             }
             this.props.finishMarquee(undefined, undefined, e);
+            runInAction(() => (this._width = this._height = 0));
         } else {
             runInAction(() => (this._width = this._height = 0));
             this.props.finishMarquee(cliX, cliY, e);
@@ -266,8 +275,9 @@ export class MarqueeAnnotator extends React.Component<MarqueeAnnotatorProps> {
     };
 
     render() {
-        return (
+        return !this.props.down ? null : (
             <div
+                ref={r => (r ? this.gotDownPoint() : this.releaseDownPt())}
                 className="marqueeAnnotator-dragBox"
                 style={{
                     left: `${this._left}px`,
-- 
cgit v1.2.3-70-g09d2

