Eduard Wisch
0dc3f46817
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This reverts commit 532d8e0c98.
438 lines
18 KiB
JavaScript
438 lines
18 KiB
JavaScript
/*
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* Bericht-Editor — PDF.js + Fabric.js + SortableJS
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* Lädt Seiten via /ajax/page_image.php (Bilder direkt, PDFs via PDF.js gerendert),
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* legt Fabric.js-Canvas darüber, speichert Annotationen pro Seite über Ajax.
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*
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* Erwartet im DOM:
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* #pdf-canvas — Canvas für die Seitendarstellung
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* #fabric-canvas — Overlay-Canvas für Annotationen
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* #bericht-page-list — Container für Seiten-Thumbnails (.page-thumb[data-pageid])
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* #page-note — Textarea für Seiten-Notiz
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* .att-check — Checkboxen der Anhänge-Liste
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* #btn-add-selected — Button "Auswahl in Bericht übernehmen"
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* #btn-save-draft — Entwurf speichern
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* #btn-finalize — Bericht finalisieren
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* #btn-undo / #btn-redo / #btn-delete-selected
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* .tool-btn[data-tool]
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* #tool-color, #tool-stroke
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* #bericht-extra-upload (file input)
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*
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* Globale Konfiguration: window.BERICHT_CONFIG (vom PHP gesetzt)
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*/
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(function () {
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'use strict';
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const cfg = window.BERICHT_CONFIG || {};
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if (!cfg.berichtid) { console.warn('Bericht: keine Konfiguration'); return; }
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// PDF.js worker (lokal)
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if (window.pdfjsLib) {
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pdfjsLib.GlobalWorkerOptions.workerSrc = '/bericht/js/lib/pdf.worker.min.js';
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}
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let currentPageId = null;
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let currentPageEl = null;
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let currentPageRotation = 0; // 0 / 90 / 180 / 270
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let currentPageBuffer = null; // ArrayBuffer der aktuellen Quelle
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let currentPageMime = '';
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let fabricCanvas = null;
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const pdfCanvas = document.getElementById('pdf-canvas');
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let currentTool = 'select';
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/* ---------- Init ---------- */
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function init() {
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// Fabric initialisieren (wird beim ersten Seitenrendern dimensioniert)
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fabricCanvas = new fabric.Canvas('fabric-canvas', {
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isDrawingMode: false,
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selection: true,
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});
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fabricCanvas.freeDrawingBrush.color = document.getElementById('tool-color').value;
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fabricCanvas.freeDrawingBrush.width = parseInt(document.getElementById('tool-stroke').value, 10);
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// Erste Seite laden (wenn vorhanden)
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const firstThumb = document.querySelector('#bericht-page-list .page-thumb');
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if (firstThumb) loadPage(firstThumb);
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bindThumbs();
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bindToolbar();
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bindAttachments();
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bindExtraUpload();
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bindActions();
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bindSortable();
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}
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/* ---------- Seiten laden ---------- */
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async function loadPage(thumbEl) {
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// vorher: aktuelle Seite speichern
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if (currentPageId) await savePageAnnotations(false);
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currentPageEl = thumbEl;
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currentPageId = parseInt(thumbEl.dataset.pageid, 10);
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document.querySelectorAll('.page-thumb.active').forEach(e => e.classList.remove('active'));
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thumbEl.classList.add('active');
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const url = cfg.urls.page_image + '?pageid=' + currentPageId;
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const resp = await fetch(url);
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const ct = resp.headers.get('Content-Type') || '';
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const buf = await resp.arrayBuffer();
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currentPageBuffer = buf;
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currentPageMime = ct;
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currentPageRotation = 0; // wird gleich aus loadPageMeta überschrieben falls gespeichert
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fabricCanvas.clear();
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document.getElementById('page-note').value = '';
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await loadPageMeta(); // setzt currentPageRotation falls vorhanden
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await rerenderCurrent(); // rendert mit Rotation
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}
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/**
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* Rendert die aktuelle Seite (image oder pdf) aus dem Buffer mit currentPageRotation.
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*/
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async function rerenderCurrent() {
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if (!currentPageBuffer) return;
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if (currentPageMime.includes('pdf')) {
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await renderPdf(currentPageBuffer);
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} else if (currentPageMime.includes('image')) {
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await renderImage(currentPageBuffer, currentPageMime);
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}
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}
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/**
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* Liefert die nutzbare Breite des Canvas-Containers (minus Padding).
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* Begrenzt auf 1200px, damit auch auf großen Screens nicht alles riesig wird.
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*/
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function getTargetCanvasWidth() {
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const wrap = document.querySelector('.bericht-canvas-wrap');
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if (!wrap) return 800;
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const cs = getComputedStyle(wrap);
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const padX = parseFloat(cs.paddingLeft) + parseFloat(cs.paddingRight);
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const avail = wrap.clientWidth - padX - 4; // 4px Sicherheitsabstand
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return Math.max(300, Math.min(1200, Math.floor(avail)));
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}
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async function renderPdf(arrayBuffer) {
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if (!window.pdfjsLib) { console.error('PDF.js nicht geladen'); return; }
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// Buffer kopieren — pdf.js konsumiert den ArrayBuffer beim ersten Aufruf
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const pdfDoc = await pdfjsLib.getDocument({ data: arrayBuffer.slice(0) }).promise;
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const pageNum = 1;
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const page = await pdfDoc.getPage(pageNum);
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// Bei Rotation müssen wir die orientierte Breite messen, um auf den
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// Container zu passen
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const target = getTargetCanvasWidth();
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const baseViewport = page.getViewport({ scale: 1, rotation: currentPageRotation });
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const scale = target / baseViewport.width;
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const viewport = page.getViewport({ scale: scale, rotation: currentPageRotation });
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pdfCanvas.width = viewport.width;
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pdfCanvas.height = viewport.height;
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const ctx = pdfCanvas.getContext('2d');
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await page.render({ canvasContext: ctx, viewport: viewport }).promise;
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resizeFabricToCanvas();
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}
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async function renderImage(arrayBuffer, mime) {
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const blob = new Blob([arrayBuffer], { type: mime });
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const url = URL.createObjectURL(blob);
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await new Promise((res) => {
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const img = new Image();
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img.onload = () => {
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const target = getTargetCanvasWidth();
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// Bei 90/270° werden Breite und Höhe getauscht
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const rotated = (currentPageRotation === 90 || currentPageRotation === 270);
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const srcW = rotated ? img.height : img.width;
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const srcH = rotated ? img.width : img.height;
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const ratio = target / srcW;
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pdfCanvas.width = Math.round(srcW * ratio);
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pdfCanvas.height = Math.round(srcH * ratio);
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const ctx = pdfCanvas.getContext('2d');
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ctx.clearRect(0, 0, pdfCanvas.width, pdfCanvas.height);
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ctx.save();
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ctx.translate(pdfCanvas.width / 2, pdfCanvas.height / 2);
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ctx.rotate(currentPageRotation * Math.PI / 180);
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const dw = img.width * ratio;
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const dh = img.height * ratio;
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ctx.drawImage(img, -dw / 2, -dh / 2, dw, dh);
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ctx.restore();
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URL.revokeObjectURL(url);
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res();
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};
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img.src = url;
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});
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resizeFabricToCanvas();
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}
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function resizeFabricToCanvas() {
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// Die tatsächlich angezeigte Größe (nicht der Drawing-Buffer) bestimmt
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// die Position des Fabric-Overlays. Wir setzen das Fabric-Canvas auf
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// die Buffer-Größe (für scharfe Annotationen) und positionieren es
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// exakt über dem sichtbaren PDF-Canvas.
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fabricCanvas.setWidth(pdfCanvas.width);
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fabricCanvas.setHeight(pdfCanvas.height);
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// Warten bis der Browser die neue Größe applied hat
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requestAnimationFrame(() => {
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const rect = pdfCanvas.getBoundingClientRect();
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const wrap = pdfCanvas.parentElement;
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const wrapRect = wrap.getBoundingClientRect();
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const fc = document.getElementById('fabric-canvas');
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fc.style.position = 'absolute';
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fc.style.left = (rect.left - wrapRect.left + wrap.scrollLeft) + 'px';
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fc.style.top = (rect.top - wrapRect.top + wrap.scrollTop) + 'px';
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fc.style.width = pdfCanvas.clientWidth + 'px';
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fc.style.height = pdfCanvas.clientHeight + 'px';
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});
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}
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async function loadPageMeta() {
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try {
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const r = await fetch(cfg.urls.save_annotations.replace('save_annotations', 'page_meta') + '?pageid=' + currentPageId);
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if (!r.ok) return;
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const data = await r.json();
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if (data.fabric_json) {
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fabricCanvas.loadFromJSON(data.fabric_json, () => fabricCanvas.renderAll());
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}
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if (data.note) document.getElementById('page-note').value = data.note;
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if (typeof data.rotation !== 'undefined' && data.rotation !== null) {
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currentPageRotation = parseInt(data.rotation, 10) || 0;
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}
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} catch (e) { /* ok */ }
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}
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/* ---------- Toolbar ---------- */
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function bindToolbar() {
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document.querySelectorAll('.tool-btn').forEach(btn => {
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btn.addEventListener('click', () => {
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document.querySelectorAll('.tool-btn.active').forEach(b => b.classList.remove('active'));
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btn.classList.add('active');
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currentTool = btn.dataset.tool;
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applyTool();
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});
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});
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document.getElementById('tool-color').addEventListener('input', e => {
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fabricCanvas.freeDrawingBrush.color = e.target.value;
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const sel = fabricCanvas.getActiveObject();
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if (sel) {
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sel.set({ stroke: e.target.value });
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if (sel.type === 'i-text' || sel.type === 'text') sel.set({ fill: e.target.value });
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fabricCanvas.requestRenderAll();
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}
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});
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document.getElementById('tool-stroke').addEventListener('input', e => {
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fabricCanvas.freeDrawingBrush.width = parseInt(e.target.value, 10);
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const sel = fabricCanvas.getActiveObject();
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if (sel) { sel.set({ strokeWidth: parseInt(e.target.value, 10) }); fabricCanvas.requestRenderAll(); }
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});
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document.getElementById('btn-undo').addEventListener('click', undo);
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document.getElementById('btn-redo').addEventListener('click', redo);
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document.getElementById('btn-delete-selected').addEventListener('click', () => {
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const sel = fabricCanvas.getActiveObjects();
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sel.forEach(o => fabricCanvas.remove(o));
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fabricCanvas.discardActiveObject();
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fabricCanvas.requestRenderAll();
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});
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// Seitenrotation: rotate-left/right rotieren die SEITE (nicht das Fabric-Objekt)
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document.getElementById('btn-rotate-left').addEventListener('click', () => rotatePage(-90));
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document.getElementById('btn-rotate-right').addEventListener('click', () => rotatePage(90));
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}
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async function rotatePage(deg) {
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currentPageRotation = ((currentPageRotation + deg) % 360 + 360) % 360;
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// Annotationen für die alte Orientierung sind im JSON noch da — wir werfen
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// sie vor dem Re-Render weg, damit sie nicht falsch positioniert sind.
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// (Bewusste Designentscheidung: rotieren vor dem Annotieren.)
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fabricCanvas.clear();
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await rerenderCurrent();
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// Sofort speichern, damit Rotation persistent ist
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await savePageAnnotations(false);
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}
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function applyTool() {
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fabricCanvas.isDrawingMode = (currentTool === 'draw');
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fabricCanvas.selection = (currentTool === 'select');
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// Click-Handler für Shape-Tools
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fabricCanvas.off('mouse:down', shapeDown);
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if (['rect', 'circle', 'arrow', 'text'].includes(currentTool)) {
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fabricCanvas.on('mouse:down', shapeDown);
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}
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}
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function shapeDown(opt) {
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const p = fabricCanvas.getPointer(opt.e);
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const color = document.getElementById('tool-color').value;
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const sw = parseInt(document.getElementById('tool-stroke').value, 10);
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let shape = null;
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if (currentTool === 'rect') {
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shape = new fabric.Rect({ left: p.x, top: p.y, width: 100, height: 60, fill: 'transparent', stroke: color, strokeWidth: sw });
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} else if (currentTool === 'circle') {
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shape = new fabric.Circle({ left: p.x, top: p.y, radius: 40, fill: 'transparent', stroke: color, strokeWidth: sw });
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} else if (currentTool === 'arrow') {
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// Pfeil = Linie mit Pfeilspitze (vereinfacht)
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shape = new fabric.Line([p.x, p.y, p.x + 100, p.y + 50], { stroke: color, strokeWidth: sw });
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} else if (currentTool === 'text') {
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shape = new fabric.IText('Text…', { left: p.x, top: p.y, fontSize: 24, fill: color });
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}
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if (shape) {
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fabricCanvas.add(shape);
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fabricCanvas.setActiveObject(shape);
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// Nach dem Setzen wieder zurück auf Select, damit User direkt verschieben/skalieren kann
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const sb = document.querySelector('.tool-btn[data-tool="select"]');
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if (sb) sb.click();
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}
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}
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/* ---------- Undo/Redo (einfach) ---------- */
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const history = [];
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let histIdx = -1;
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function snapshot() {
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history.length = histIdx + 1;
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history.push(JSON.stringify(fabricCanvas.toJSON()));
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histIdx = history.length - 1;
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}
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function undo() {
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if (histIdx <= 0) return;
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histIdx--;
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fabricCanvas.loadFromJSON(history[histIdx], () => fabricCanvas.renderAll());
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}
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function redo() {
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if (histIdx >= history.length - 1) return;
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histIdx++;
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fabricCanvas.loadFromJSON(history[histIdx], () => fabricCanvas.renderAll());
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}
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setTimeout(() => {
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if (fabricCanvas) {
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fabricCanvas.on('object:added', snapshot);
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fabricCanvas.on('object:modified', snapshot);
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fabricCanvas.on('object:removed', snapshot);
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}
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}, 500);
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function rotateCurrent(deg) {
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const sel = fabricCanvas.getActiveObject();
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if (sel) {
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sel.rotate(((sel.angle || 0) + deg) % 360);
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fabricCanvas.requestRenderAll();
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}
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}
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/* ---------- Speichern ---------- */
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async function savePageAnnotations(showMessage = true) {
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if (!currentPageId) return;
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const fd = new FormData();
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fd.append('token', cfg.token);
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fd.append('pageid', currentPageId);
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fd.append('fabric_json', JSON.stringify(fabricCanvas.toJSON()));
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fd.append('note', document.getElementById('page-note').value || '');
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fd.append('rotation', currentPageRotation);
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const r = await fetch(cfg.urls.save_annotations, { method: 'POST', body: fd });
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const data = await r.json().catch(() => ({}));
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if (showMessage && data.success) toast('Seite gespeichert');
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}
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function bindActions() {
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document.getElementById('btn-save-draft').addEventListener('click', async () => {
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await savePageAnnotations(true);
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});
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document.getElementById('btn-finalize').addEventListener('click', async () => {
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await savePageAnnotations(false);
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const fd = new FormData();
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fd.append('token', cfg.token);
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fd.append('berichtid', cfg.berichtid);
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const r = await fetch(cfg.urls.generate_pdf, { method: 'POST', body: fd });
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const data = await r.json();
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if (data.success) {
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toast('PDF erstellt: ' + data.filename);
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setTimeout(() => location.reload(), 1500);
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} else {
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alert('Fehler: ' + (data.error || 'unbekannt'));
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}
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});
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}
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/* ---------- Anhänge & Thumbs ---------- */
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function bindAttachments() {
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const btn = document.getElementById('btn-add-selected');
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if (!btn) return;
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btn.addEventListener('click', async () => {
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const checks = document.querySelectorAll('.att-check:checked');
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for (const c of checks) {
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const fd = new FormData();
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fd.append('token', cfg.token);
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fd.append('berichtid', cfg.berichtid);
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fd.append('relpath', c.dataset.relpath);
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fd.append('mime', c.dataset.mime);
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await fetch(cfg.urls.add_attachment, { method: 'POST', body: fd });
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c.checked = false;
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}
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location.reload(); // einfacher als Thumbnail-Liste neu zu rendern
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});
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}
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function bindExtraUpload() {
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const inp = document.getElementById('bericht-extra-upload');
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if (!inp) return;
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inp.addEventListener('change', async () => {
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if (!inp.files.length) return;
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const fd = new FormData();
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fd.append('token', cfg.token);
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fd.append('berichtid', cfg.berichtid);
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fd.append('file', inp.files[0]);
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const r = await fetch(cfg.urls.upload_extra, { method: 'POST', body: fd });
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const data = await r.json();
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if (data.success) location.reload();
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else alert('Upload fehlgeschlagen: ' + (data.error || ''));
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});
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}
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function bindThumbs() {
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document.querySelectorAll('.page-thumb').forEach(t => {
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t.addEventListener('click', e => {
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if (e.target.closest('.thumb-del')) return;
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loadPage(t);
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});
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const del = t.querySelector('.thumb-del');
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if (del) del.addEventListener('click', async (e) => {
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e.stopPropagation();
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if (!confirm(cfg.lang.confirm_del)) return;
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const fd = new FormData();
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fd.append('token', cfg.token);
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fd.append('pageid', t.dataset.pageid);
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await fetch(cfg.urls.delete_page, { method: 'POST', body: fd });
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location.reload();
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});
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});
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}
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function bindSortable() {
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const list = document.getElementById('bericht-page-list');
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if (!list || !window.Sortable) return;
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Sortable.create(list, {
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animation: 150,
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onEnd: async () => {
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const ids = Array.from(list.querySelectorAll('.page-thumb')).map(t => t.dataset.pageid);
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const fd = new FormData();
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fd.append('token', cfg.token);
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fd.append('order', JSON.stringify(ids));
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await fetch(cfg.urls.reorder_pages, { method: 'POST', body: fd });
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}
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});
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}
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/* ---------- Helpers ---------- */
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function toast(msg) {
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const t = document.createElement('div');
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t.className = 'bericht-toast';
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t.textContent = msg;
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document.body.appendChild(t);
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setTimeout(() => t.remove(), 2000);
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}
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document.addEventListener('DOMContentLoaded', init);
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})();
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