class e { constructor(a, b, c, d, f) { this._legacyCanvasSize = e.DEFAULT_CANVAS_SIZE; this._preferredCamera = "environment"; this._maxScansPerSecond = 25; this._lastScanTimestamp = -1; this._destroyed = this._flashOn = this._paused = this._active = !1; this.$video = a; this.$canvas = document.createElement("canvas"); c && "object" === typeof c ? (this._onDecode = b) : (c || d || f ? console.warn( "You're using a deprecated version of the QrScanner constructor which will be removed in the future" ) : console.warn( "Note that the type of the scan result passed to onDecode will change in the future. To already switch to the new api today, you can pass returnDetailedScanResult: true." ), (this._legacyOnDecode = b)); b = "object" === typeof c ? c : {}; this._onDecodeError = b.onDecodeError || ("function" === typeof c ? c : this._onDecodeError); this._calculateScanRegion = b.calculateScanRegion || ("function" === typeof d ? d : this._calculateScanRegion); this._preferredCamera = b.preferredCamera || f || this._preferredCamera; this._legacyCanvasSize = "number" === typeof c ? c : "number" === typeof d ? d : this._legacyCanvasSize; this._maxScansPerSecond = b.maxScansPerSecond || this._maxScansPerSecond; this._onPlay = this._onPlay.bind(this); this._onLoadedMetaData = this._onLoadedMetaData.bind(this); this._onVisibilityChange = this._onVisibilityChange.bind(this); this._updateOverlay = this._updateOverlay.bind(this); a.disablePictureInPicture = !0; a.playsInline = !0; a.muted = !0; let h = !1; a.hidden && ((a.hidden = !1), (h = !0)); document.body.contains(a) || (document.body.appendChild(a), (h = !0)); c = a.parentElement; if (b.highlightScanRegion || b.highlightCodeOutline) { d = !!b.overlay; this.$overlay = b.overlay || document.createElement("div"); f = this.$overlay.style; f.position = "absolute"; f.display = "none"; f.pointerEvents = "none"; this.$overlay.classList.add("scan-region-highlight"); if (!d && b.highlightScanRegion) { this.$overlay.innerHTML = ''; try { this.$overlay.firstElementChild.animate( { transform: ["scale(.98)", "scale(1.01)"], }, { duration: 400, iterations: Infinity, direction: "alternate", easing: "ease-in-out", } ); } catch (m) {} c.insertBefore(this.$overlay, this.$video.nextSibling); } b.highlightCodeOutline && (this.$overlay.insertAdjacentHTML( "beforeend", '' ), (this.$codeOutlineHighlight = this.$overlay.lastElementChild)); } this._scanRegion = this._calculateScanRegion(a); requestAnimationFrame(() => { let m = window.getComputedStyle(a); "none" === m.display && (a.style.setProperty("display", "block", "important"), (h = !0)); "visible" !== m.visibility && (a.style.setProperty("visibility", "visible", "important"), (h = !0)); h && (console.warn( "QrScanner has overwritten the video hiding style to avoid Safari stopping the playback." ), (a.style.opacity = "0"), (a.style.width = "0"), (a.style.height = "0"), this.$overlay && this.$overlay.parentElement && this.$overlay.parentElement.removeChild(this.$overlay), delete this.$overlay, delete this.$codeOutlineHighlight); this.$overlay && this._updateOverlay(); }); a.addEventListener("play", this._onPlay); a.addEventListener("loadedmetadata", this._onLoadedMetaData); document.addEventListener("visibilitychange", this._onVisibilityChange); window.addEventListener("resize", this._updateOverlay); this._qrEnginePromise = e.createQrEngine(); } static set WORKER_PATH(a) { console.warn( "Setting QrScanner.WORKER_PATH is not required and not supported anymore. Have a look at the README for new setup instructions." ); } static async hasCamera() { try { return !!(await e.listCameras(!1)).length; } catch (a) { return !1; } } static async listCameras(a = !1) { if (!navigator.mediaDevices) return []; let b = async () => (await navigator.mediaDevices.enumerateDevices()).filter( (d) => "videoinput" === d.kind ), c; try { a && (await b()).every((d) => !d.label) && (c = await navigator.mediaDevices.getUserMedia({ audio: !1, video: !0, })); } catch (d) {} try { return (await b()).map((d, f) => ({ id: d.deviceId, label: d.label || (0 === f ? "Default Camera" : `Camera ${f + 1}`), })); } finally { c && (console.warn( "Call listCameras after successfully starting a QR scanner to avoid creating a temporary video stream" ), e._stopVideoStream(c)); } } async hasFlash() { let a; try { if (this.$video.srcObject) { if (!(this.$video.srcObject instanceof MediaStream)) return !1; a = this.$video.srcObject; } else a = (await this._getCameraStream()).stream; return "torch" in a.getVideoTracks()[0].getSettings(); } catch (b) { return !1; } finally { a && a !== this.$video.srcObject && (console.warn( "Call hasFlash after successfully starting the scanner to avoid creating a temporary video stream" ), e._stopVideoStream(a)); } } isFlashOn() { return this._flashOn; } async toggleFlash() { this._flashOn ? await this.turnFlashOff() : await this.turnFlashOn(); } async turnFlashOn() { if ( !this._flashOn && !this._destroyed && ((this._flashOn = !0), this._active && !this._paused) ) try { if (!(await this.hasFlash())) throw "No flash available"; await this.$video.srcObject .getVideoTracks()[0] .applyConstraints({ advanced: [{ torch: !0 }] }); } catch (a) { throw ((this._flashOn = !1), a); } } async turnFlashOff() { this._flashOn && ((this._flashOn = !1), await this._restartVideoStream()); } destroy() { this.$video.removeEventListener("loadedmetadata", this._onLoadedMetaData); this.$video.removeEventListener("play", this._onPlay); document.removeEventListener("visibilitychange", this._onVisibilityChange); window.removeEventListener("resize", this._updateOverlay); this._destroyed = !0; this._flashOn = !1; this.stop(); e._postWorkerMessage(this._qrEnginePromise, "close"); } async start() { if (this._destroyed) throw Error( "The QR scanner can not be started as it had been destroyed." ); if (!this._active || this._paused) if ( ("https:" !== window.location.protocol && console.warn( "The camera stream is only accessible if the page is transferred via https." ), (this._active = !0), !document.hidden) ) if (((this._paused = !1), this.$video.srcObject)) await this.$video.play(); else try { let { stream: a, facingMode: b } = await this._getCameraStream(); !this._active || this._paused ? e._stopVideoStream(a) : (this._setVideoMirror(b), (this.$video.srcObject = a), await this.$video.play(), this._flashOn && ((this._flashOn = !1), this.turnFlashOn().catch(() => {}))); } catch (a) { if (!this._paused) throw ((this._active = !1), a); } } stop() { this.pause(); this._active = !1; } async pause(a = !1) { this._paused = !0; if (!this._active) return !0; this.$video.pause(); this.$overlay && (this.$overlay.style.display = "none"); let b = () => { this.$video.srcObject instanceof MediaStream && (e._stopVideoStream(this.$video.srcObject), (this.$video.srcObject = null)); }; if (a) return b(), !0; await new Promise((c) => setTimeout(c, 300)); if (!this._paused) return !1; b(); return !0; } async setCamera(a) { a !== this._preferredCamera && ((this._preferredCamera = a), await this._restartVideoStream()); } static async scanImage(a, b, c, d, f = !1, h = !1) { let m, n = !1; b && ("scanRegion" in b || "qrEngine" in b || "canvas" in b || "disallowCanvasResizing" in b || "alsoTryWithoutScanRegion" in b || "returnDetailedScanResult" in b) ? ((m = b.scanRegion), (c = b.qrEngine), (d = b.canvas), (f = b.disallowCanvasResizing || !1), (h = b.alsoTryWithoutScanRegion || !1), (n = !0)) : b || c || d || f || h ? console.warn( "You're using a deprecated api for scanImage which will be removed in the future." ) : console.warn( "Note that the return type of scanImage will change in the future. To already switch to the new api today, you can pass returnDetailedScanResult: true." ); b = !!c; try { let p, k; [c, p] = await Promise.all([c || e.createQrEngine(), e._loadImage(a)]); [d, k] = e._drawToCanvas(p, m, d, f); let q; if (c instanceof Worker) { let g = c; b || e._postWorkerMessageSync(g, "inversionMode", "both"); q = await new Promise((l, v) => { let w, u, r, y = -1; u = (t) => { t.data.id === y && (g.removeEventListener("message", u), g.removeEventListener("error", r), clearTimeout(w), null !== t.data.data ? l({ data: t.data.data, cornerPoints: e._convertPoints(t.data.cornerPoints, m), }) : v(e.NO_QR_CODE_FOUND)); }; r = (t) => { g.removeEventListener("message", u); g.removeEventListener("error", r); clearTimeout(w); v("Scanner error: " + (t ? t.message || t : "Unknown Error")); }; g.addEventListener("message", u); g.addEventListener("error", r); w = setTimeout(() => r("timeout"), 1e4); let x = k.getImageData(0, 0, d.width, d.height); y = e._postWorkerMessageSync(g, "decode", x, [x.data.buffer]); }); } else q = await Promise.race([ new Promise((g, l) => window.setTimeout(() => l("Scanner error: timeout"), 1e4) ), (async () => { try { var [g] = await c.detect(d); if (!g) throw e.NO_QR_CODE_FOUND; return { data: g.rawValue, cornerPoints: e._convertPoints(g.cornerPoints, m), }; } catch (l) { g = l.message || l; if (/not implemented|service unavailable/.test(g)) return ( (e._disableBarcodeDetector = !0), e.scanImage(a, { scanRegion: m, canvas: d, disallowCanvasResizing: f, alsoTryWithoutScanRegion: h, }) ); throw `Scanner error: ${g}`; } })(), ]); return n ? q : q.data; } catch (p) { if (!m || !h) throw p; let k = await e.scanImage(a, { qrEngine: c, canvas: d, disallowCanvasResizing: f, }); return n ? k : k.data; } finally { b || e._postWorkerMessage(c, "close"); } } setGrayscaleWeights(a, b, c, d = !0) { e._postWorkerMessage(this._qrEnginePromise, "grayscaleWeights", { red: a, green: b, blue: c, useIntegerApproximation: d, }); } setInversionMode(a) { e._postWorkerMessage(this._qrEnginePromise, "inversionMode", a); } static async createQrEngine(a) { a && console.warn( "Specifying a worker path is not required and not supported anymore." ); a = () => import("./qr-scanner-worker.min.js").then((c) => c.createWorker()); if ( !( !e._disableBarcodeDetector && "BarcodeDetector" in window && BarcodeDetector.getSupportedFormats && (await BarcodeDetector.getSupportedFormats()).includes("qr_code") ) ) return a(); let b = navigator.userAgentData; return b && b.brands.some(({ brand: c }) => /Chromium/i.test(c)) && /mac ?OS/i.test(b.platform) && (await b .getHighEntropyValues(["architecture", "platformVersion"]) .then( ({ architecture: c, platformVersion: d }) => /arm/i.test(c || "arm") && 13 <= parseInt(d || "13") ) .catch(() => !0)) ? a() : new BarcodeDetector({ formats: ["qr_code"] }); } _onPlay() { this._scanRegion = this._calculateScanRegion(this.$video); this._updateOverlay(); this.$overlay && (this.$overlay.style.display = ""); this._scanFrame(); } _onLoadedMetaData() { this._scanRegion = this._calculateScanRegion(this.$video); this._updateOverlay(); } _onVisibilityChange() { document.hidden ? this.pause() : this._active && this.start(); } _calculateScanRegion(a) { let b = Math.round((2 / 3) * Math.min(a.videoWidth, a.videoHeight)); return { x: Math.round((a.videoWidth - b) / 2), y: Math.round((a.videoHeight - b) / 2), width: b, height: b, downScaledWidth: this._legacyCanvasSize, downScaledHeight: this._legacyCanvasSize, }; } _updateOverlay() { requestAnimationFrame(() => { if (this.$overlay) { var a = this.$video, b = a.videoWidth, c = a.videoHeight, d = a.offsetWidth, f = a.offsetHeight, h = a.offsetLeft, m = a.offsetTop, n = window.getComputedStyle(a), p = n.objectFit, k = b / c, q = d / f; switch (p) { case "none": var g = b; var l = c; break; case "fill": g = d; l = f; break; default: ("cover" === p ? k > q : k < q) ? ((l = f), (g = l * k)) : ((g = d), (l = g / k)), "scale-down" === p && ((g = Math.min(g, b)), (l = Math.min(l, c))); } var [v, w] = n.objectPosition.split(" ").map((r, y) => { const x = parseFloat(r); return r.endsWith("%") ? ((y ? f - l : d - g) * x) / 100 : x; }); n = this._scanRegion.width || b; q = this._scanRegion.height || c; p = this._scanRegion.x || 0; var u = this._scanRegion.y || 0; k = this.$overlay.style; k.width = `${(n / b) * g}px`; k.height = `${(q / c) * l}px`; k.top = `${m + w + (u / c) * l}px`; c = /scaleX\(-1\)/.test(a.style.transform); k.left = `${h + (c ? d - v - g : v) + ((c ? b - p - n : p) / b) * g}px`; k.transform = a.style.transform; } }); } static _convertPoints(a, b) { if (!b) return a; let c = b.x || 0, d = b.y || 0, f = b.width && b.downScaledWidth ? b.width / b.downScaledWidth : 1; b = b.height && b.downScaledHeight ? b.height / b.downScaledHeight : 1; for (let h of a) (h.x = h.x * f + c), (h.y = h.y * b + d); return a; } _scanFrame() { !this._active || this.$video.paused || this.$video.ended || ("requestVideoFrameCallback" in this.$video ? this.$video.requestVideoFrameCallback.bind(this.$video) : requestAnimationFrame)(async () => { if (!(1 >= this.$video.readyState)) { var a = Date.now() - this._lastScanTimestamp, b = 1e3 / this._maxScansPerSecond; a < b && (await new Promise((d) => setTimeout(d, b - a))); this._lastScanTimestamp = Date.now(); try { var c = await e.scanImage(this.$video, { scanRegion: this._scanRegion, qrEngine: this._qrEnginePromise, canvas: this.$canvas, }); } catch (d) { if (!this._active) return; this._onDecodeError(d); } !e._disableBarcodeDetector || (await this._qrEnginePromise) instanceof Worker || (this._qrEnginePromise = e.createQrEngine()); c ? (this._onDecode ? this._onDecode(c) : this._legacyOnDecode && this._legacyOnDecode(c.data), this.$codeOutlineHighlight && (clearTimeout(this._codeOutlineHighlightRemovalTimeout), (this._codeOutlineHighlightRemovalTimeout = void 0), this.$codeOutlineHighlight.setAttribute( "viewBox", `${this._scanRegion.x || 0} ` + `${this._scanRegion.y || 0} ` + `${this._scanRegion.width || this.$video.videoWidth} ` + `${this._scanRegion.height || this.$video.videoHeight}` ), this.$codeOutlineHighlight.firstElementChild.setAttribute( "points", c.cornerPoints.map(({ x: d, y: f }) => `${d},${f}`).join(" ") ), (this.$codeOutlineHighlight.style.display = ""))) : this.$codeOutlineHighlight && !this._codeOutlineHighlightRemovalTimeout && (this._codeOutlineHighlightRemovalTimeout = setTimeout( () => (this.$codeOutlineHighlight.style.display = "none"), 100 )); } this._scanFrame(); }); } _onDecodeError(a) { a !== e.NO_QR_CODE_FOUND && console.log(a); } async _getCameraStream() { if (!navigator.mediaDevices) throw "Camera not found."; let a = /^(environment|user)$/.test(this._preferredCamera) ? "facingMode" : "deviceId", b = [{ width: { min: 1024 } }, { width: { min: 768 } }, {}], c = b.map((d) => Object.assign({}, d, { [a]: { exact: this._preferredCamera } }) ); for (let d of [...c, ...b]) try { let f = await navigator.mediaDevices.getUserMedia({ video: d, audio: !1, }), h = this._getFacingMode(f) || (d.facingMode ? this._preferredCamera : "environment" === this._preferredCamera ? "user" : "environment"); return { stream: f, facingMode: h }; } catch (f) {} throw "Camera not found."; } async _restartVideoStream() { let a = this._paused; (await this.pause(!0)) && !a && this._active && (await this.start()); } static _stopVideoStream(a) { for (let b of a.getTracks()) b.stop(), a.removeTrack(b); } _setVideoMirror(a) { this.$video.style.transform = "scaleX(" + ("user" === a ? -1 : 1) + ")"; } _getFacingMode(a) { return (a = a.getVideoTracks()[0]) ? /rear|back|environment/i.test(a.label) ? "environment" : /front|user|face/i.test(a.label) ? "user" : null : null; } static _drawToCanvas(a, b, c, d = !1) { c = c || document.createElement("canvas"); let f = b && b.x ? b.x : 0, h = b && b.y ? b.y : 0, m = b && b.width ? b.width : a.videoWidth || a.width, n = b && b.height ? b.height : a.videoHeight || a.height; d || ((d = b && b.downScaledWidth ? b.downScaledWidth : m), (b = b && b.downScaledHeight ? b.downScaledHeight : n), c.width !== d && (c.width = d), c.height !== b && (c.height = b)); b = c.getContext("2d", { alpha: !1 }); b.imageSmoothingEnabled = !1; b.drawImage(a, f, h, m, n, 0, 0, c.width, c.height); return [c, b]; } static async _loadImage(a) { if (a instanceof Image) return await e._awaitImageLoad(a), a; if ( a instanceof HTMLVideoElement || a instanceof HTMLCanvasElement || a instanceof SVGImageElement || ("OffscreenCanvas" in window && a instanceof OffscreenCanvas) || ("ImageBitmap" in window && a instanceof ImageBitmap) ) return a; if ( a instanceof File || a instanceof Blob || a instanceof URL || "string" === typeof a ) { let b = new Image(); b.src = a instanceof File || a instanceof Blob ? URL.createObjectURL(a) : a.toString(); try { return await e._awaitImageLoad(b), b; } finally { (a instanceof File || a instanceof Blob) && URL.revokeObjectURL(b.src); } } else throw "Unsupported image type."; } static async _awaitImageLoad(a) { (a.complete && 0 !== a.naturalWidth) || (await new Promise((b, c) => { let d = (f) => { a.removeEventListener("load", d); a.removeEventListener("error", d); f instanceof ErrorEvent ? c("Image load error") : b(); }; a.addEventListener("load", d); a.addEventListener("error", d); })); } static async _postWorkerMessage(a, b, c, d) { return e._postWorkerMessageSync(await a, b, c, d); } static _postWorkerMessageSync(a, b, c, d) { if (!(a instanceof Worker)) return -1; let f = e._workerMessageId++; a.postMessage({ id: f, type: b, data: c }, d); return f; } } e.DEFAULT_CANVAS_SIZE = 400; e.NO_QR_CODE_FOUND = "No QR code found"; e._disableBarcodeDetector = !1; e._workerMessageId = 0; export default e; //# sourceMappingURL=qr-scanner.min.js.map