From a0207bf861908da9235a1752a723e69ecdbba734 Mon Sep 17 00:00:00 2001
From: vkalev <vjk1883@gmail.com>
Date: Tue, 6 Jul 2021 12:45:37 -0500
Subject: refactoring

---
 src/client/views/InkControls.tsx | 118 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 src/client/views/InkControls.tsx

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

diff --git a/src/client/views/InkControls.tsx b/src/client/views/InkControls.tsx
new file mode 100644
index 000000000..eeddfce4c
--- /dev/null
+++ b/src/client/views/InkControls.tsx
@@ -0,0 +1,118 @@
+import React = require("react");
+import { observable, action } from "mobx";
+import { observer } from "mobx-react";
+import { InkStrokeProperties } from "./InkStrokeProperties";
+import { setupMoveUpEvents, emptyFunction } from "../../Utils";
+import { UndoManager } from "../util/UndoManager";
+import { ControlPoint, InkData, PointData } from "../../fields/InkField";
+import { Transform } from "../util/Transform";
+
+export interface InkControlProps {
+    data: InkData;
+    addedPoints: PointData[];
+    format: number[];
+    ScreenToLocalTransform: () => Transform;
+}
+
+@observer
+export class InkControls extends React.Component<InkControlProps> {
+    // @observable private _controlPoints: ControlPoint[] = [];
+    @observable private _overControl = -1;
+    @observable private _overAddPoint = -1;
+
+    /**
+     * Handles the movement of a selected control point when the user clicks and drags.
+     * @param controlNum The index of the currently selected control point.
+     */
+    @action
+    onControlDown = (e: React.PointerEvent, controlNum: number): void => {
+        if (InkStrokeProperties.Instance) {
+            InkStrokeProperties.Instance.moveControl(0, 0, 1);
+            const controlUndo = UndoManager.StartBatch("DocDecs set radius");
+            const screenScale = this.props.ScreenToLocalTransform().Scale;
+            setupMoveUpEvents(this, e,
+                (e: PointerEvent, down: number[], delta: number[]) => {
+                    InkStrokeProperties.Instance?.moveControl(-delta[0] * screenScale, -delta[1] * screenScale, controlNum);
+                    return false;
+                },
+                () => controlUndo?.end(), emptyFunction);
+        }
+    }
+
+    /**
+     * Deletes the currently selected point.
+     */
+    @action
+    onDelete = (e: KeyboardEvent) => {
+        if (["-", "Backspace", "Delete"].includes(e.key)) {
+            if (InkStrokeProperties.Instance?.deletePoints()) e.stopPropagation();
+        }
+    }
+
+    /**
+     * Changes the current selected control point.
+     */
+    @action
+    changeCurrPoint = (i: number) => {
+        if (InkStrokeProperties.Instance) {
+            InkStrokeProperties.Instance._currentPoint = i;
+            document.addEventListener("keydown", this.onDelete, true);
+        }
+    }
+
+    @action onEnterControl = (i: number) => { this._overControl = i; };
+    @action onLeaveControl = () => { this._overControl = -1; };
+    @action onEnterAddPoint = (i: number) => { this._overAddPoint = i; };
+    @action onLeaveAddPoint = () => { this._overAddPoint = -1; };
+ 
+    render() {
+        const data = this.props.data;
+        const controlPoints: ControlPoint[] = [];
+        if (data.length >= 4) {
+            for (let i = 0; i <= data.length - 4; i += 4) {
+                controlPoints.push({ X: data[i].X, Y: data[i].Y, I: i });
+                controlPoints.push({ X: data[i + 3].X, Y: data[i + 3].Y, I: i + 3 });
+            }
+        }
+        const addedPoints = this.props.addedPoints;
+        const [left, top, scaleX, scaleY, strokeWidth, dotsize] = this.props.format;
+
+        return (
+            <>
+                {addedPoints.map((pts, i) =>
+                    <svg height="10" width="10" key={`add${i}`}>
+                        <circle 
+                            cx={(pts.X - left - strokeWidth / 2) * scaleX + strokeWidth / 2} 
+                            cy={(pts.Y - top - strokeWidth / 2) * scaleY + strokeWidth / 2} 
+                            r={strokeWidth / 2} 
+                            stroke={this._overAddPoint === i ? "#1F85DE" : "transparent"} 
+                            strokeWidth={dotsize / 4} fill={this._overAddPoint === i ? "#1F85DE" : "transparent"}
+                            onPointerDown={() => { InkStrokeProperties.Instance?.addPoints(pts.X, pts.Y, addedPoints, i, controlPoints); }} 
+                            onMouseEnter={() => this.onEnterAddPoint(i)} 
+                            onMouseLeave={this.onLeaveAddPoint} 
+                            pointerEvents="all" 
+                            cursor="all-scroll"
+                        />
+                    </svg>
+                )}
+                {controlPoints.map((control, i) =>
+                    <svg height="10" width="10" key={`ctrl${i}`}>
+                        <rect 
+                            x={(control.X - left - strokeWidth / 2) * scaleX} 
+                            y={(control.Y - top - strokeWidth / 2) * scaleY} 
+                            height={this._overControl === i ? strokeWidth * 1.5 : strokeWidth} 
+                            width={this._overControl === i ? strokeWidth * 1.5 : strokeWidth} 
+                            strokeWidth={strokeWidth / 6} stroke="#1F85DE" 
+                            fill={InkStrokeProperties.Instance?._currentPoint === control.I ? "#1F85DE" : "white"}
+                            onPointerDown={(e) => { this.changeCurrPoint(control.I); this.onControlDown(e, control.I); }} 
+                            onMouseEnter={() => this.onEnterControl(i)} 
+                            onMouseLeave={this.onLeaveControl} 
+                            pointerEvents="all" 
+                            cursor="default"
+                        />
+                    </svg>
+                )}
+            </>
+        );
+    }
+}
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