From 244e06ec9873888dcef3cd08322880d73848fe69 Mon Sep 17 00:00:00 2001
From: bobzel <zzzman@gmail.com>
Date: Tue, 28 Sep 2021 18:10:26 -0400
Subject: renamed some ink files

---
 src/client/views/InkControlPtHandles.tsx | 147 +++++++++++++++++++++++++++++++
 1 file changed, 147 insertions(+)
 create mode 100644 src/client/views/InkControlPtHandles.tsx

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

diff --git a/src/client/views/InkControlPtHandles.tsx b/src/client/views/InkControlPtHandles.tsx
new file mode 100644
index 000000000..eb0eebcdf
--- /dev/null
+++ b/src/client/views/InkControlPtHandles.tsx
@@ -0,0 +1,147 @@
+import React = require("react");
+import { action, observable } from "mobx";
+import { observer } from "mobx-react";
+import { Doc } from "../../fields/Doc";
+import { ControlPoint, InkData, PointData } from "../../fields/InkField";
+import { listSpec } from "../../fields/Schema";
+import { Cast } from "../../fields/Types";
+import { setupMoveUpEvents } from "../../Utils";
+import { Transform } from "../util/Transform";
+import { UndoManager } from "../util/UndoManager";
+import { Colors } from "./global/globalEnums";
+import { InkStrokeProperties } from "./InkStrokeProperties";
+
+export interface InkControlProps {
+    inkDoc: Doc;
+    inkCtrlPoints: InkData;
+    screenCtrlPoints: InkData;
+    screenSpaceLineWidth: number;
+    ScreenToLocalTransform: () => Transform;
+    nearestScreenPt: () => PointData | undefined;
+}
+
+@observer
+export class InkControlPtHandles extends React.Component<InkControlProps> {
+
+    @observable private _overControl = -1;
+    @observable private _overAddPoint = -1;
+    /**
+     * Handles the movement of a selected control point when the user clicks and drags.
+     * @param controlIndex The index of the currently selected control point.
+     */
+    @action
+    onControlDown = (e: React.PointerEvent, controlIndex: number): void => {
+        if (InkStrokeProperties.Instance) {
+            InkStrokeProperties.Instance.moveControl(0, 0, 1);
+            const controlUndo = UndoManager.StartBatch("DocDecs set radius");
+            const screenScale = this.props.ScreenToLocalTransform().Scale;
+            const order = controlIndex % 4;
+            const handleIndexA = ((order === 3 ? controlIndex - 1 : controlIndex - 2) + this.props.inkCtrlPoints.length) % this.props.inkCtrlPoints.length;
+            const handleIndexB = (order === 3 ? controlIndex + 2 : controlIndex + 1) % this.props.inkCtrlPoints.length;
+            const brokenIndices = Cast(this.props.inkDoc.brokenInkIndices, listSpec("number"));
+            setupMoveUpEvents(this, e,
+                (e: PointerEvent, down: number[], delta: number[]) => {
+                    InkStrokeProperties.Instance?.moveControl(-delta[0] * screenScale, -delta[1] * screenScale, controlIndex);
+                    return false;
+                },
+                () => controlUndo?.end(),
+                action((e: PointerEvent, doubleTap: boolean | undefined) => {
+                    const equivIndex = controlIndex === 0 ? this.props.inkCtrlPoints.length - 1 : controlIndex === this.props.inkCtrlPoints.length - 1 ? 0 : controlIndex;
+                    if (doubleTap && brokenIndices?.includes(equivIndex)) {
+                        InkStrokeProperties.Instance?.snapHandleTangent(equivIndex, handleIndexA, handleIndexB);
+                    }
+                    if (doubleTap && brokenIndices?.includes(controlIndex)) {
+                        InkStrokeProperties.Instance?.snapHandleTangent(controlIndex, handleIndexA, handleIndexB);
+                    }
+                }));
+        }
+    }
+    /**
+     * Updates whether a user has hovered over a particular control point or point that could be added
+     * on click.
+     */
+    @action onEnterControl = (i: number) => { this._overControl = i; };
+    @action onLeaveControl = () => { this._overControl = -1; };
+    @action onEnterAddPoint = (i: number) => { this._overAddPoint = i; };
+    @action onLeaveAddPoint = () => { this._overAddPoint = -1; };
+
+    /**
+     * 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);
+        }
+    }
+
+    render() {
+        const formatInstance = InkStrokeProperties.Instance;
+        if (!formatInstance) return (null);
+
+        // Accessing the current ink's data and extracting all control points.
+        const scrData = this.props.screenCtrlPoints;
+        const sreenCtrlPoints: ControlPoint[] = [];
+        for (let i = 0; i <= scrData.length - 4; i += 4) {
+            sreenCtrlPoints.push({ ...scrData[i], I: i });
+            sreenCtrlPoints.push({ ...scrData[i + 3], I: i + 3 });
+        }
+
+        const inkData = this.props.inkCtrlPoints;
+        const inkCtrlPts: ControlPoint[] = [];
+        for (let i = 0; i <= inkData.length - 4; i += 4) {
+            inkCtrlPts.push({ ...inkData[i], I: i });
+            inkCtrlPts.push({ ...inkData[i + 3], I: i + 3 });
+        }
+
+        const screenSpaceLineWidth = this.props.screenSpaceLineWidth;
+        const rectHdlSize = (i: number) => this._overControl === i ? screenSpaceLineWidth * 6 : screenSpaceLineWidth * 4;
+
+        const nearestScreenPt = this.props.nearestScreenPt();
+        return (<svg>
+            {!nearestScreenPt ? (null) :
+                <circle key={"npt"}
+                    cx={nearestScreenPt.X}
+                    cy={nearestScreenPt.Y}
+                    r={screenSpaceLineWidth * 4}
+                    fill={"#00007777"}
+                    stroke={"#00007777"}
+                    strokeWidth={0}
+                    pointerEvents="none"
+                    cursor="all-scroll"
+                />
+            }
+            {sreenCtrlPoints.map((control, i) =>
+                <rect key={i}
+                    x={control.X - rectHdlSize(i) / 2}
+                    y={control.Y - rectHdlSize(i) / 2}
+                    height={rectHdlSize(i)}
+                    width={rectHdlSize(i)}
+                    strokeWidth={screenSpaceLineWidth / 2}
+                    stroke={Colors.MEDIUM_BLUE}
+                    fill={formatInstance?._currentPoint === control.I ? Colors.MEDIUM_BLUE : Colors.WHITE}
+                    onPointerDown={e => {
+                        this.changeCurrPoint(control.I);
+                        this.onControlDown(e, control.I);
+                    }}
+                    onMouseEnter={e => this.onEnterControl(i)}
+                    onMouseLeave={this.onLeaveControl}
+                    pointerEvents="all"
+                    cursor="default"
+                />
+            )}
+        </svg>
+        );
+    }
+}
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