Robin Davies
379 lines
12 KiB
TypeScript
379 lines
12 KiB
TypeScript
// Copyright (c) 2022 Robin Davies
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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import React, { TouchEvent, PointerEvent, SyntheticEvent } from 'react';import { Theme } from '@mui/material/styles';
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import { WithStyles } from '@mui/styles';
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import withStyles from '@mui/styles/withStyles';
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import createStyles from '@mui/styles/createStyles';
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import { PiPedalModel, PiPedalModelFactory, ZoomedControlInfo } from './PiPedalModel';
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import {ReactComponent as DialIcon} from './svg/fx_dial.svg';
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const SELECTED_OPACITY = 0.8;
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const DEFAULT_OPACITY = 0.6;
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const FINE_RANGE_SCALE = 0.1; //
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const ULTRA_FINE_RANGE_SCALE = 0.02; // 12000 pixels to move from 0 to 1.
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const MIN_ANGLE = -135;
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const MAX_ANGLE = 135;
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const DEAD_ZONE_SIZE = 5;
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const styles = (theme: Theme) => createStyles({
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dialIcon: {
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overscrollBehavior: "none", touchAction: "none",
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fill: theme.palette.text.primary,
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opacity: DEFAULT_OPACITY,
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}
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});
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interface ZoomedDialProps extends WithStyles<typeof styles> {
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theme: Theme,
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size: number,
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controlInfo: ZoomedControlInfo | undefined,
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onPreviewValue(value: number): void,
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onSetValue(value: number): void
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}
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interface ZoomedDialState {
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}
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const ZoomedDial = withStyles(styles, { withTheme: true })(
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class extends React.Component<ZoomedDialProps, ZoomedDialState> {
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model: PiPedalModel = PiPedalModelFactory.getInstance();
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imgRef: React.RefObject<SVGSVGElement> = React.createRef();
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constructor(props: ZoomedDialProps) {
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super(props);
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this.state = {
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};
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this.onTouchStart = this.onTouchStart.bind(this);
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this.onTouchMove = this.onTouchMove.bind(this);
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this.onBodyPointerDownCapture = this.onBodyPointerDownCapture.bind(this);
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this.onPointerDown = this.onPointerDown.bind(this);
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this.onPointerUp = this.onPointerUp.bind(this);
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this.onPointerMove = this.onPointerMove.bind(this);
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this.onPointerLostCapture = this.onPointerLostCapture.bind(this);
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}
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onPointerUp(e: PointerEvent<SVGSVGElement>) {
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if (this.isCapturedPointer(e)) {
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--this.pointersDown;
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e.preventDefault();
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this.updateAngle(e);
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this.commitAngle();
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this.releaseCapture(e);
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} else {
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--this.pointersDown;
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}
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}
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releaseCapture(e: PointerEvent<SVGSVGElement>)
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{
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let img = this.imgRef.current;
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if (img && img.style) {
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img.releasePointerCapture(e.pointerId);
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img.style.opacity = "" + DEFAULT_OPACITY;
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// they get automaticlly released.
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// for (let i = 0; i < this.capturedPointers.length; ++i)
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// {
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// img.releasePointerCapture (this.capturedPointers[i]);
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// }
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this.capturedPointers = [];
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}
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document.body.removeEventListener(
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"pointerdown",
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this.onBodyPointerDownCapture,true
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);
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this.mouseDown = false;
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}
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onPointerLostCapture(e: PointerEvent<SVGSVGElement>) {
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if (this.isCapturedPointer(e)) {
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--this.pointersDown;
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this.releaseCapture(e);
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}
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}
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onTouchStart(e: TouchEvent<SVGSVGElement>) {
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//must be defined to get onTouchMove
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}
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onTouchMove(e: TouchEvent<SVGSVGElement>) {
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// e.preventDefault();
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e.stopPropagation(); // cancels scroll!!!
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}
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capturedPointers: number[] = [];
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isExtraTouch(e: PointerEvent): boolean {
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return (this.mouseDown && this.pointerType === "touch" && e.pointerType === "touch" && e.pointerId !== this.pointerId);
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}
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mouseDown: boolean = false;
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pointerId: number = -1;
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pointerType: string = "";
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startX: number = 0;
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startY: number = 0;
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currentAngle: number = 0;
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lastPointerAngle: number = 0;
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isValidPointer(e: PointerEvent<SVGSVGElement>): boolean {
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if (e.pointerType === "mouse") {
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return e.button === 0;
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} else if (e.pointerType === "pen") {
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return true;
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} else if (e.pointerType === "touch") {
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return true;
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}
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return false;
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}
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defaultValue: number = 0;
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getCurrentValue(): number {
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if (this.props.controlInfo == null) {
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return this.defaultValue;
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} else {
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let uiControl = this.props.controlInfo.uiControl;
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let instanceId = this.props.controlInfo.instanceId;
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if (instanceId === -1) return 0;
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let pedalboardItem = this.model.pedalboard.get()?.getItem(instanceId);
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let value: number = pedalboardItem?.getControlValue(uiControl.symbol) ?? 0;
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this.defaultValue = value;
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return value;
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}
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}
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angleToValue(angle: number): number {
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if (this.props.controlInfo) {
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if (angle > MAX_ANGLE) angle = MAX_ANGLE;
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if (angle < MIN_ANGLE) angle = MIN_ANGLE;
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let r = (angle - MIN_ANGLE) / (MAX_ANGLE - MIN_ANGLE);
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let uiControl = this.props.controlInfo.uiControl;
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return r * (uiControl.max_value-uiControl.min_value)+uiControl.min_value;
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}
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return 0;
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}
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valueToAngle(value: number): number {
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if (this.props.controlInfo) {
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let uiControl = this.props.controlInfo.uiControl;
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let range = (value - uiControl.min_value) / (uiControl.max_value - uiControl.min_value);
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if (range < 0) range = 0;
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if (range > 1) range = 1;
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return (MAX_ANGLE - MIN_ANGLE) * range + MIN_ANGLE;
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}
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return 0;
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}
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pointerToAngle(e: PointerEvent<SVGSVGElement>): number {
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if (this.imgRef.current) {
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let img = this.imgRef.current;
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let rc = img.getBoundingClientRect();
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let x = e.clientX - (rc.left+ rc.width / 2);
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let y = e.clientY - (rc.top + rc.height / 2);
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// dead zone in center of image.
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if (x*x+y*y < DEAD_ZONE_SIZE*DEAD_ZONE_SIZE) return NaN;
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let angle = -Math.atan2(-y, x) * 180 / Math.PI + 90;
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return angle;
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}
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return NaN;
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}
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captureElement?: SVGSVGElement;
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pointersDown: number = 0;
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onPointerDown(e: PointerEvent<SVGSVGElement>): void {
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if (!this.mouseDown && this.isValidPointer(e)) {
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e.preventDefault();
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e.stopPropagation();
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this.mouseDown = true;
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this.pointersDown = 1;
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this.pointerId = e.pointerId;
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this.pointerType = e.pointerType;
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this.startX = e.clientX;
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this.startY = e.clientY;
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this.currentAngle = this.valueToAngle(this.getCurrentValue());
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this.lastPointerAngle = this.pointerToAngle(e);
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let img = this.imgRef.current;
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if (img) {
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this.captureElement = img;
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document.body.addEventListener(
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"pointerdown",
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this.onBodyPointerDownCapture, true
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);
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img.setPointerCapture(e.pointerId);
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if (img.style) {
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img.style.opacity = "" + SELECTED_OPACITY;
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}
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}
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} else {
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if (this.isExtraTouch(e)) {
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++this.pointersDown;
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}
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}
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}
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isCapturedPointer(e: PointerEvent<SVGSVGElement>): boolean {
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return this.mouseDown
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&& e.pointerId === this.pointerId
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&& e.pointerType === this.pointerType;
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}
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onPointerMove(e: PointerEvent<SVGSVGElement>): void {
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if (this.isCapturedPointer(e)) {
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e.preventDefault();
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this.updateAngle(e)
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}
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}
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commitAngle() {
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let previewValue = this.angleToValue(this.currentAngle);
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this.props.onSetValue(previewValue);
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this.defaultValue = previewValue;
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}
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updateAngle(e: PointerEvent<SVGSVGElement>): void {
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let angle: number = this.pointerToAngle(e);
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if (!isNaN(angle)) {
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if (!isNaN(this.lastPointerAngle)) {
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let dAngle = angle-this.lastPointerAngle;
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while (dAngle > 180) dAngle -= 360;
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while (dAngle < -180) dAngle += 360;
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let scale = 1.0;
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if (this.pointersDown === 2)
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{
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scale = FINE_RANGE_SCALE;
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} else if (this.pointersDown >= 3)
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{
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scale = ULTRA_FINE_RANGE_SCALE;
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}
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this.currentAngle += dAngle*scale;
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let previewValue = this.angleToValue(this.currentAngle);
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this.previewValue(previewValue);
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this.props.onPreviewValue(previewValue);
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}
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this.lastPointerAngle = angle;
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}
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}
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makeRotationTransform(angle: number): string
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{
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return "rotate(" + angle + "deg)";
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}
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getDefaultRotationTransform(): string
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{
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let v = this.getCurrentValue();
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let a = this.valueToAngle(v);
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return this.makeRotationTransform(a);
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}
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previewValue(value: number): void
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{
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if (this.imgRef.current)
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{
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let img = this.imgRef.current;
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let angle = this.valueToAngle(value);
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img.style.transform = this.makeRotationTransform(angle);
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}
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}
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onBodyPointerDownCapture(e_: any): any {
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let e = e_ as PointerEvent;
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if (this.isExtraTouch(e)) {
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this.captureElement!.setPointerCapture(e.pointerId);
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this.capturedPointers.push(e.pointerId);
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++this.pointersDown;
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}
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}
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onDrag(e: SyntheticEvent) {
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e.preventDefault();
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e.stopPropagation();
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return false;
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}
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render() {
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let classes = this.props.classes;
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return (
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<DialIcon ref={this.imgRef} className={classes.dialIcon}
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style={{
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transform: this.getDefaultRotationTransform(),
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width: this.props.size, height: this.props.size,
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}}
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onTouchStart={this.onTouchStart} onTouchMove={this.onTouchMove}
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onPointerDown={this.onPointerDown} onPointerUp={this.onPointerUp}
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onPointerMoveCapture={this.onPointerMove} onDrag={this.onDrag}
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/>
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);
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}
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}
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);
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export default ZoomedDial;
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