From a687a9962c8952074177e52366b69dcce231a18e Mon Sep 17 00:00:00 2001
From: bob <bcz@cs.brown.edu>
Date: Mon, 1 Apr 2019 13:46:32 -0400
Subject: fixed several things related to selections and creating text boxes. 
 moved remote cursor stuff into its own file.

---
 .../CollectionFreeFormRemoteCursors.tsx            | 115 +++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 src/client/views/collections/collectionFreeForm/CollectionFreeFormRemoteCursors.tsx

(limited to 'src/client/views/collections/collectionFreeForm/CollectionFreeFormRemoteCursors.tsx')

diff --git a/src/client/views/collections/collectionFreeForm/CollectionFreeFormRemoteCursors.tsx b/src/client/views/collections/collectionFreeForm/CollectionFreeFormRemoteCursors.tsx
new file mode 100644
index 000000000..19382e66f
--- /dev/null
+++ b/src/client/views/collections/collectionFreeForm/CollectionFreeFormRemoteCursors.tsx
@@ -0,0 +1,115 @@
+import { action, computed, observable } from "mobx";
+import { observer } from "mobx-react";
+import { Document } from "../../../../fields/Document";
+import { FieldWaiting } from "../../../../fields/Field";
+import { KeyStore } from "../../../../fields/KeyStore";
+import { TextField } from "../../../../fields/TextField";
+import { DragManager } from "../../../util/DragManager";
+import { Transform } from "../../../util/Transform";
+import { undoBatch } from "../../../util/UndoManager";
+import { InkingCanvas } from "../../InkingCanvas";
+import { CollectionFreeFormDocumentView } from "../../nodes/CollectionFreeFormDocumentView";
+import { DocumentContentsView } from "../../nodes/DocumentContentsView";
+import { DocumentViewProps } from "../../nodes/DocumentView";
+import { COLLECTION_BORDER_WIDTH } from "../CollectionView";
+import { CollectionViewBase, CollectionViewProps, CursorEntry } from "../CollectionViewBase";
+import { CollectionFreeFormLinksView } from "./CollectionFreeFormLinksView";
+import "./CollectionFreeFormView.scss";
+import { MarqueeView } from "./MarqueeView";
+import React = require("react");
+import v5 = require("uuid/v5");
+import { CurrentUserUtils } from "../../../../server/authentication/models/current_user_utils";
+
+@observer
+export class CollectionFreeFormRemoteCursors extends React.Component<CollectionViewProps> {
+    protected getCursors(): CursorEntry[] {
+        let doc = this.props.Document;
+        let id = CurrentUserUtils.id;
+        let cursors = doc.GetList<CursorEntry>(KeyStore.Cursors, []);
+        let notMe = cursors.filter(entry => entry.Data[0][0] !== id);
+        return id ? notMe : [];
+    }
+
+    private crosshairs?: HTMLCanvasElement;
+    drawCrosshairs = (backgroundColor: string) => {
+        if (this.crosshairs) {
+            let c = this.crosshairs;
+            let ctx = c.getContext('2d');
+            if (ctx) {
+                ctx.fillStyle = backgroundColor;
+                ctx.fillRect(0, 0, 20, 20);
+
+                ctx.fillStyle = "black";
+                ctx.lineWidth = 0.5;
+
+                ctx.beginPath();
+
+                ctx.moveTo(10, 0);
+                ctx.lineTo(10, 8);
+
+                ctx.moveTo(10, 20);
+                ctx.lineTo(10, 12);
+
+                ctx.moveTo(0, 10);
+                ctx.lineTo(8, 10);
+
+                ctx.moveTo(20, 10);
+                ctx.lineTo(12, 10);
+
+                ctx.stroke();
+
+                // ctx.font = "10px Arial";
+                // ctx.fillText(CurrentUserUtils.email[0].toUpperCase(), 10, 10);
+            }
+        }
+    }
+    @computed
+    get sharedCursors() {
+        return this.getCursors().map(entry => {
+            if (entry.Data.length > 0) {
+                let id = entry.Data[0][0];
+                let email = entry.Data[0][1];
+                let point = entry.Data[1];
+                this.drawCrosshairs("#" + v5(id, v5.URL).substring(0, 6).toUpperCase() + "22")
+                return (
+                    <div
+                        key={id}
+                        style={{
+                            position: "absolute",
+                            transform: `translate(${point[0] - 10}px, ${point[1] - 10}px)`,
+                            zIndex: 10000,
+                            transformOrigin: 'center center',
+                        }}
+                    >
+                        <canvas
+                            ref={(el) => { if (el) this.crosshairs = el }}
+                            width={20}
+                            height={20}
+                            style={{
+                                position: 'absolute',
+                                width: "20px",
+                                height: "20px",
+                                opacity: 0.5,
+                                borderRadius: "50%",
+                                border: "2px solid black"
+                            }}
+                        />
+                        <p
+                            style={{
+                                fontSize: 14,
+                                color: "black",
+                                // fontStyle: "italic",
+                                marginLeft: -12,
+                                marginTop: 4
+                            }}
+                        >{email[0].toUpperCase()}</p>
+                    </div>
+                );
+            }
+        })
+    }
+
+    render() {
+        return this.sharedCursors;
+    }
+}
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