mapcomplete/UI/Input/DirectionInput.ts

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No EOL
3.2 KiB
TypeScript

import {InputElement} from "./InputElement";
import {UIEventSource} from "../../Logic/UIEventSource";
import Combine from "../Base/Combine";
import Svg from "../../Svg";
/**
* Selects a direction in degrees
*/
export default class DirectionInput extends InputElement<string> {
private readonly value: UIEventSource<string>;
public readonly IsSelected: UIEventSource<boolean> = new UIEventSource<boolean>(false);
constructor(value?: UIEventSource<string>) {
super();
this.dumbMode = false;
this.value = value ?? new UIEventSource<string>(undefined);
this.value.addCallbackAndRun(rotation => {
const selfElement = document.getElementById(this.id);
if (selfElement === null) {
return;
}
const cone = selfElement.getElementsByClassName("direction-svg")[0] as HTMLElement
cone.style.transform = `rotate(${rotation}deg)`;
})
}
GetValue(): UIEventSource<string> {
return this.value;
}
InnerRender(): string {
return new Combine([
`<div id="direction-leaflet-div-${this.id}" style="width:100%;height: 100%;position: absolute;top:0;left:0;border-radius:100%;"></div>`,
Svg.direction_svg().SetStyle(
`position: absolute;top: 0;left: 0;width: 100%;height: 100%;transform:rotate(${this.value.data ?? 0}deg);`)
.SetClass("direction-svg"),
Svg.compass_svg().SetStyle(
"position: absolute;top: 0;left: 0;width: 100%;height: 100%;")
])
.SetStyle("position:relative;display:block;width: min(100%, 25em); padding-top: min(100% , 25em); background:white; border: 1px solid black; border-radius: 999em")
.Render();
}
protected InnerUpdate(htmlElement: HTMLElement) {
super.InnerUpdate(htmlElement);
const self = this;
function onPosChange(x: number, y: number) {
const rect = htmlElement.getBoundingClientRect();
const dx = -(rect.left + rect.right) / 2 + x;
const dy = (rect.top + rect.bottom) / 2 - y;
const angle = 180 * Math.atan2(dy, dx) / Math.PI;
const angleGeo = Math.floor((450 - angle) % 360);
self.value.setData("" + angleGeo)
}
htmlElement.ontouchmove = (ev: TouchEvent) => {
onPosChange(ev.touches[0].clientX, ev.touches[0].clientY);
ev.preventDefault();
}
htmlElement.ontouchstart = (ev: TouchEvent) => {
onPosChange(ev.touches[0].clientX, ev.touches[0].clientY);
}
let isDown = false;
htmlElement.onmousedown = (ev: MouseEvent) => {
isDown = true;
onPosChange(ev.clientX, ev.clientY);
ev.preventDefault();
}
htmlElement.onmouseup = (ev) => {
isDown = false; ev.preventDefault();
}
htmlElement.onmousemove = (ev: MouseEvent) => {
if (isDown) {
onPosChange(ev.clientX, ev.clientY);
} ev.preventDefault();
}
}
IsValid(str: string): boolean {
const t = Number(str);
return !isNaN(t) && t >= 0 && t <= 360;
}
}