55 lines
1.8 KiB
JavaScript
55 lines
1.8 KiB
JavaScript
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'use strict';
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// Reader settings
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let readerSettings = { fontSize: 16, lineHeight: 1.8, maxWidth: 65, theme: 'dark',
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fontFamily: 'serif', noBold: false, fontWeight: null,
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pdfZoom: 100, pdfInverted: false, pdfPaginated: false, pdfSpread: false };
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let readerSettingsPanelOpen = false;
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let currentPdfDoc = null;
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let currentPdfBuffer = null;
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// Bookmarks
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let currentBookmarks = [];
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let bookmarksDirty = false;
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// Highlights
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let currentHighlights = [];
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let highlightsDirty = false;
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let currentHighlightPopover = null;
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// Search
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let searchMatches = [];
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let searchMatchIndex = -1;
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let searchOriginalContent = null;
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let readerSearchOpen = false;
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// PDF paginated
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let pdfCurrentPage = 1;
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let pdfTotalPages = 0;
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let _pdfPageTextBoxCache = {};
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let _pdfRenderGen = 0;
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let _touchStartX = 0;
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let _readerScrollInterval = null;
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let _readerScrollDir = 0;
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let _readerScrollLastTs = 0;
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const READER_SCROLL_SPEED = 1200; // constant px/s, no ramp-up
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const READER_SCROLL_TICK_MS = 20; // fixed cadence, independent of the
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// display's refresh rate — rAF runs at
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// that rate (120/144/165Hz on plenty of
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// laptops), which was driving 2-3x more
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// scrollBy + scroll-listener work per
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// second than intended and read as lag.
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function _readerScrollTick() {
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const now = performance.now();
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const dt = now - _readerScrollLastTs;
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_readerScrollLastTs = now;
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$('reader-content')?.scrollBy({top: Math.round(_readerScrollDir * READER_SCROLL_SPEED * dt / 1000)});
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}
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let _pinchStartDist = 0;
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let _pinchStartZoom = 100;
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let _isPinching = false;
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if (typeof pdfjsLib !== 'undefined') {
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pdfjsLib.GlobalWorkerOptions.workerSrc = '/static/js/pdf.worker.min.js';
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}
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