forked from MapComplete/MapComplete
97 lines
No EOL
3.2 KiB
TypeScript
97 lines
No EOL
3.2 KiB
TypeScript
import {InputElement} from "./InputElement";
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import {UIEventSource} from "../../Logic/UIEventSource";
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import Combine from "../Base/Combine";
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import Svg from "../../Svg";
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/**
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* Selects a direction in degrees
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*/
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export default class DirectionInput extends InputElement<string> {
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private readonly value: UIEventSource<string>;
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public readonly IsSelected: UIEventSource<boolean> = new UIEventSource<boolean>(false);
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constructor(value?: UIEventSource<string>) {
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super();
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this.dumbMode = false;
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this.value = value ?? new UIEventSource<string>(undefined);
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this.value.addCallbackAndRun(rotation => {
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const selfElement = document.getElementById(this.id);
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if (selfElement === null) {
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return;
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}
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const cone = selfElement.getElementsByClassName("direction-svg")[0] as HTMLElement
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cone.style.transform = `rotate(${rotation}deg)`;
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})
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}
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GetValue(): UIEventSource<string> {
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return this.value;
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}
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InnerRender(): string {
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return new Combine([
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`<div id="direction-leaflet-div-${this.id}" style="width:100%;height: 100%;position: absolute;top:0;left:0;border-radius:100%;"></div>`,
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Svg.direction_svg().SetStyle(
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`position: absolute;top: 0;left: 0;width: 100%;height: 100%;transform:rotate(${this.value.data ?? 0}deg);`)
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.SetClass("direction-svg"),
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Svg.compass_svg().SetStyle(
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"position: absolute;top: 0;left: 0;width: 100%;height: 100%;")
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])
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.SetStyle("position:relative;display:block;width: min(100%, 25em); padding-top: min(100% , 25em); background:white; border: 1px solid black; border-radius: 999em")
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.Render();
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}
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protected InnerUpdate(htmlElement: HTMLElement) {
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super.InnerUpdate(htmlElement);
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const self = this;
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function onPosChange(x: number, y: number) {
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const rect = htmlElement.getBoundingClientRect();
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const dx = -(rect.left + rect.right) / 2 + x;
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const dy = (rect.top + rect.bottom) / 2 - y;
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const angle = 180 * Math.atan2(dy, dx) / Math.PI;
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const angleGeo = Math.floor((450 - angle) % 360);
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self.value.setData("" + angleGeo)
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}
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htmlElement.ontouchmove = (ev: TouchEvent) => {
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onPosChange(ev.touches[0].clientX, ev.touches[0].clientY);
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ev.preventDefault();
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}
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htmlElement.ontouchstart = (ev: TouchEvent) => {
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onPosChange(ev.touches[0].clientX, ev.touches[0].clientY);
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}
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let isDown = false;
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htmlElement.onmousedown = (ev: MouseEvent) => {
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isDown = true;
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onPosChange(ev.clientX, ev.clientY);
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ev.preventDefault();
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}
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htmlElement.onmouseup = (ev) => {
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isDown = false; ev.preventDefault();
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}
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htmlElement.onmousemove = (ev: MouseEvent) => {
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if (isDown) {
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onPosChange(ev.clientX, ev.clientY);
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} ev.preventDefault();
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}
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}
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IsValid(str: string): boolean {
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const t = Number(str);
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return !isNaN(t) && t >= 0 && t <= 360;
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}
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} |