images
2 years ago
locale
2 years ago
ep-scripts.js
3 months ago
ep-styles.css
1 year ago
viewer.css
2 years ago
viewer.html
1 year ago
viewer.js
3 months ago
ep-scripts.js
652 lines
| 1 | "use strict"; |
| 2 | |
| 3 | //Create theme mode function |
| 4 | const setThemeMode = (themeMode) => { |
| 5 | const htmlEL = document.getElementsByTagName("html")[0]; |
| 6 | if (htmlEL) { |
| 7 | htmlEL.setAttribute('ep-data-theme', themeMode); |
| 8 | } |
| 9 | } |
| 10 | |
| 11 | |
| 12 | const getParamObj = (hash) => { |
| 13 | |
| 14 | let paramsObj = {}; |
| 15 | let colorsObj = {}; |
| 16 | |
| 17 | if (location.hash) { |
| 18 | let hashParams = new URLSearchParams(hash.substring(1)); |
| 19 | |
| 20 | if (hashParams.get('key') !== null) { |
| 21 | hashParams = '#' + atob(hashParams.get('key')); |
| 22 | hashParams = new URLSearchParams(hashParams.substring(1)); |
| 23 | } |
| 24 | |
| 25 | if (hashParams.get('themeMode') == 'custom') { |
| 26 | colorsObj = { |
| 27 | customColor: hashParams.get('customColor'), |
| 28 | }; |
| 29 | } |
| 30 | paramsObj = { |
| 31 | themeMode: hashParams.get('themeMode'), |
| 32 | ...colorsObj, |
| 33 | presentation: hashParams.get('presentation'), |
| 34 | lazyLoad: hashParams.get('lazyLoad'), |
| 35 | copy_text: hashParams.get('copy_text'), |
| 36 | add_text: hashParams.get('add_text'), |
| 37 | draw: hashParams.get('draw'), |
| 38 | add_image: hashParams.get('add_image'), |
| 39 | position: hashParams.get('position'), |
| 40 | download: hashParams.get('download'), |
| 41 | toolbar: hashParams.get('toolbar'), |
| 42 | doc_details: hashParams.get('pdf_details'), |
| 43 | doc_rotation: hashParams.get('pdf_rotation'), |
| 44 | selection_tool: hashParams.get('selection_tool'), |
| 45 | scrolling: hashParams.get('scrolling'), |
| 46 | spreads: hashParams.get('spreads'), |
| 47 | is_pro_active: hashParams.get('is_pro_active'), |
| 48 | pageNumber: hashParams.get('pageNumber'), |
| 49 | watermark_text: decodeURIComponent(hashParams.get('watermark_text') || ''), |
| 50 | watermark_font_size: hashParams.get('watermark_font_size'), |
| 51 | watermark_color: (function() { |
| 52 | var c = hashParams.get('watermark_color'); |
| 53 | if (c && c.charAt(0) !== '#') c = '#' + c; |
| 54 | return c || '#000000'; |
| 55 | })(), |
| 56 | watermark_opacity: hashParams.get('watermark_opacity'), |
| 57 | watermark_style: hashParams.get('watermark_style'), |
| 58 | }; |
| 59 | |
| 60 | |
| 61 | if (hashParams.get('download') !== 'true' && hashParams.get('download') !== 'yes') { |
| 62 | window.addEventListener('beforeunload', function (event) { |
| 63 | event.stopImmediatePropagation(); |
| 64 | }); |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | return paramsObj; |
| 69 | } |
| 70 | |
| 71 | const isDisplay = (selectorName) => { |
| 72 | if (selectorName == 'false' || selectorName == false) { |
| 73 | selectorName = 'none'; |
| 74 | } |
| 75 | else { |
| 76 | selectorName = 'block'; |
| 77 | } |
| 78 | return selectorName; |
| 79 | } |
| 80 | |
| 81 | |
| 82 | const adjustHexColor = (hexColor, percentage) => { |
| 83 | if (!hexColor || typeof hexColor !== 'string' || !hexColor.startsWith('#') || hexColor.length < 4) { |
| 84 | return hexColor || '#38383d'; |
| 85 | } |
| 86 | // Convert hex color to RGB values |
| 87 | const r = parseInt(hexColor.slice(1, 3), 16); |
| 88 | const g = parseInt(hexColor.slice(3, 5), 16); |
| 89 | const b = parseInt(hexColor.slice(5, 7), 16); |
| 90 | |
| 91 | // Calculate adjusted RGB values |
| 92 | const adjustment = Math.round((percentage / 100) * 255); |
| 93 | const newR = Math.max(Math.min(r + adjustment, 255), 0); |
| 94 | const newG = Math.max(Math.min(g + adjustment, 255), 0); |
| 95 | const newB = Math.max(Math.min(b + adjustment, 255), 0); |
| 96 | |
| 97 | // Convert adjusted RGB values back to hex color |
| 98 | const newHexColor = '#' + ((1 << 24) + (newR << 16) + (newG << 8) + newB).toString(16).slice(1); |
| 99 | |
| 100 | return newHexColor; |
| 101 | } |
| 102 | |
| 103 | |
| 104 | const getColorBrightness = (hexColor) => { |
| 105 | if (!hexColor || typeof hexColor !== 'string' || !hexColor.startsWith('#') || hexColor.length < 4) { |
| 106 | return 50; |
| 107 | } |
| 108 | const r = parseInt(hexColor.slice(1, 3), 16); |
| 109 | const g = parseInt(hexColor.slice(3, 5), 16); |
| 110 | const b = parseInt(hexColor.slice(5, 7), 16); |
| 111 | |
| 112 | // Convert the RGB color to HSL |
| 113 | const max = Math.max(r, g, b); |
| 114 | const min = Math.min(r, g, b); |
| 115 | const l = (max + min) / 2; |
| 116 | |
| 117 | // Calculate the brightness position in percentage |
| 118 | const brightnessPercentage = Math.round(l / 255 * 100); |
| 119 | |
| 120 | return brightnessPercentage; |
| 121 | } |
| 122 | const pdfIframeStyle = (data) => { |
| 123 | |
| 124 | const isAllNull = Object.values(data).every(value => value === null);; |
| 125 | |
| 126 | if (isAllNull) { |
| 127 | return false; |
| 128 | }; |
| 129 | |
| 130 | let settingsPos = ''; |
| 131 | |
| 132 | if (data.toolbar === false || data.toolbar == 'false') { |
| 133 | data.presentation = false; data.download = true; data.copy_text = true; data.add_text = true; data.draw = true, data.doc_details = false; data.doc_rotation = false, data.add_image = false; |
| 134 | } |
| 135 | |
| 136 | let position = 'top'; |
| 137 | let toolbar = isDisplay(data.toolbar); |
| 138 | let presentation = isDisplay(data.presentation); |
| 139 | let download = isDisplay(data.download); |
| 140 | let copy_text = isDisplay(data.copy_text); |
| 141 | let add_text = isDisplay(data.add_text); |
| 142 | let draw = isDisplay(data.draw); |
| 143 | |
| 144 | if (copy_text === 'block' || copy_text == 'true' || copy_text == true) { |
| 145 | copy_text = 'text'; |
| 146 | } |
| 147 | |
| 148 | |
| 149 | let doc_details = isDisplay(data.doc_details); |
| 150 | let doc_rotation = isDisplay(data.doc_rotation); |
| 151 | let add_image = isDisplay(data.add_image); |
| 152 | |
| 153 | const otherhead = document.getElementsByTagName("head")[0]; |
| 154 | |
| 155 | const style = document.createElement("style"); |
| 156 | style.setAttribute('id', 'EBiframeStyleID'); |
| 157 | |
| 158 | let pdfCustomColor = ''; |
| 159 | |
| 160 | |
| 161 | |
| 162 | if (data.themeMode == 'custom') { |
| 163 | if (!data.customColor) { |
| 164 | data.customColor = '#38383d'; |
| 165 | } |
| 166 | |
| 167 | let colorBrightness = getColorBrightness(data.customColor); |
| 168 | |
| 169 | let iconsTextsColor = 'white'; |
| 170 | if (colorBrightness > 60) { |
| 171 | iconsTextsColor = 'black'; |
| 172 | } |
| 173 | |
| 174 | pdfCustomColor = ` |
| 175 | [ep-data-theme="custom"] { |
| 176 | --body-bg-color: ${data.customColor}; |
| 177 | --toolbar-bg-color: ${adjustHexColor(data.customColor, 15)}; |
| 178 | --doorhanger-bg-color: ${data.customColor}; |
| 179 | --field-bg-color: ${data.customColor}; |
| 180 | --dropdown-btn-bg-color: ${data.customColor}; |
| 181 | --button-hover-color: ${adjustHexColor(data.customColor, 25)}; |
| 182 | --toggled-btn-bg-color: ${adjustHexColor(data.customColor, 25)}; |
| 183 | --doorhanger-hover-bg-color: ${adjustHexColor(data.customColor, 20)}; |
| 184 | --toolbar-border-color: ${adjustHexColor(data.customColor, 10)}; |
| 185 | --doorhanger-border-color: ${adjustHexColor(data.customColor, 10)}; |
| 186 | --doorhanger-border-color-whcm: ${adjustHexColor(data.customColor, 10)}; |
| 187 | --separator-color: ${adjustHexColor(data.customColor, 10)}; |
| 188 | --doorhanger-separator-color: ${adjustHexColor(data.customColor, 15)}; |
| 189 | --toolbar-icon-bg-color: ${iconsTextsColor}; |
| 190 | --toolbar-icon-bg-color: ${iconsTextsColor}; |
| 191 | --main-color: ${iconsTextsColor}; |
| 192 | --field-color: ${iconsTextsColor}; |
| 193 | --doorhanger-hover-color: ${iconsTextsColor}; |
| 194 | --toolbar-icon-hover-bg-color: ${iconsTextsColor}; |
| 195 | --toggled-btn-color: ${iconsTextsColor}; |
| 196 | |
| 197 | }`; |
| 198 | } |
| 199 | |
| 200 | if (data.position === 'top') { |
| 201 | position = 'top:0;bottom:auto;' |
| 202 | settingsPos = ''; |
| 203 | } |
| 204 | else { |
| 205 | position = 'bottom:0;top:auto;' |
| 206 | settingsPos = ` |
| 207 | .findbar, .secondaryToolbar { |
| 208 | top: auto;bottom: 32px; |
| 209 | } |
| 210 | .doorHangerRight:after{ |
| 211 | transform: rotate(180deg); |
| 212 | bottom: -16px; |
| 213 | } |
| 214 | .doorHangerRight:before { |
| 215 | transform: rotate(180deg); |
| 216 | bottom: -18px; |
| 217 | } |
| 218 | |
| 219 | .findbar.doorHanger:before { |
| 220 | bottom: -18px; |
| 221 | transform: rotate(180deg); |
| 222 | } |
| 223 | .findbar.doorHanger:after { |
| 224 | bottom: -16px; |
| 225 | transform: rotate(180deg); |
| 226 | } |
| 227 | |
| 228 | div#editorInkParamsToolbar, #editorFreeTextParamsToolbar { |
| 229 | bottom: 32px; |
| 230 | top: auto; |
| 231 | } |
| 232 | #mainContainer { |
| 233 | top: -40px!important; |
| 234 | } |
| 235 | `; |
| 236 | } |
| 237 | |
| 238 | style.textContent = ` |
| 239 | .toolbar{ |
| 240 | display: ${toolbar}!important; |
| 241 | position: absolute; |
| 242 | ${position} |
| 243 | } |
| 244 | #secondaryToolbar{ |
| 245 | display: ${toolbar}; |
| 246 | } |
| 247 | #secondaryPresentationMode, #toolbarViewerRight #presentationMode{ |
| 248 | display: ${presentation}!important; |
| 249 | } |
| 250 | #secondaryOpenFile, #toolbarViewerRight #openFile{ |
| 251 | display: none!important; |
| 252 | } |
| 253 | #secondaryDownload, #secondaryPrint, #print, #download{ |
| 254 | display: ${download}!important; |
| 255 | } |
| 256 | #pageRotateCw{ |
| 257 | display: ${doc_rotation}!important; |
| 258 | } |
| 259 | #editorStamp{ |
| 260 | display: ${add_image}!important; |
| 261 | } |
| 262 | #pageRotateCcw{ |
| 263 | display: ${doc_rotation}!important; |
| 264 | } |
| 265 | #documentProperties{ |
| 266 | display: ${doc_details}!important; |
| 267 | } |
| 268 | .textLayer{ |
| 269 | user-select: ${copy_text}!important; |
| 270 | -webkit-user-select: ${copy_text}!important; |
| 271 | -moz-user-select: ${copy_text}!important; |
| 272 | -ms-user-select: ${copy_text}!important; |
| 273 | } |
| 274 | button#cursorSelectTool{ |
| 275 | display: ${copy_text}!important; |
| 276 | } |
| 277 | |
| 278 | #editorFreeText{ |
| 279 | display: ${add_text}!important; |
| 280 | } |
| 281 | #editorInk{ |
| 282 | display: ${draw}!important; |
| 283 | } |
| 284 | |
| 285 | ${pdfCustomColor} |
| 286 | |
| 287 | ${settingsPos} |
| 288 | `; |
| 289 | |
| 290 | if (otherhead) { |
| 291 | if (document.getElementById("EBiframeStyleID")) { |
| 292 | document.getElementById("EBiframeStyleID").remove(); |
| 293 | } |
| 294 | otherhead.appendChild(style); |
| 295 | } |
| 296 | } |
| 297 | |
| 298 | const manupulatePDFIframe = (e) => { |
| 299 | let hashNewUrl = new URL(e.newURL); |
| 300 | let data = getParamObj(hashNewUrl.hash); |
| 301 | pdfIframeStyle(data); |
| 302 | setThemeMode(data.themeMode); |
| 303 | |
| 304 | } |
| 305 | |
| 306 | window.addEventListener('hashchange', (e) => { |
| 307 | manupulatePDFIframe(e); |
| 308 | }, false); |
| 309 | |
| 310 | |
| 311 | let data = getParamObj(location.hash); |
| 312 | |
| 313 | pdfIframeStyle(data); |
| 314 | setThemeMode(data.themeMode); |
| 315 | |
| 316 | |
| 317 | |
| 318 | document.querySelector(".presentationMode")?.addEventListener("click", function () { |
| 319 | |
| 320 | var mainContainer = document.getElementById("mainContainer"); |
| 321 | if (mainContainer && !document.fullscreenElement) { |
| 322 | mainContainer.requestFullscreen().catch(err => { |
| 323 | alert(`Error attempting to enable full-screen mode: ${err.message} (${err.name})`); |
| 324 | }); |
| 325 | } else { |
| 326 | if (document.exitFullscreen) { |
| 327 | document.exitFullscreen(); |
| 328 | } |
| 329 | } |
| 330 | }); |
| 331 | |
| 332 | document.getElementById("viewBookmark")?.addEventListener('click', (e) => { |
| 333 | e.preventDefault(); |
| 334 | const url = e.target.getAttribute('href'); |
| 335 | if (url !== null) { |
| 336 | alert(`Current Page: ${url}`); |
| 337 | } |
| 338 | }); |
| 339 | |
| 340 | |
| 341 | // Open at specific page number |
| 342 | const epPageNumber = (function() { |
| 343 | // Check for URL query parameter ?eppage=N from the top-level page |
| 344 | try { |
| 345 | const topUrl = new URL(window.top.location.href); |
| 346 | const urlPage = topUrl.searchParams.get('eppage'); |
| 347 | if (urlPage && parseInt(urlPage, 10) > 0) { |
| 348 | return parseInt(urlPage, 10); |
| 349 | } |
| 350 | } catch (e) { |
| 351 | // Cross-origin access may fail, ignore |
| 352 | } |
| 353 | // Fall back to the embedded param |
| 354 | if (data.pageNumber && parseInt(data.pageNumber, 10) > 1) { |
| 355 | return parseInt(data.pageNumber, 10); |
| 356 | } |
| 357 | return null; |
| 358 | })(); |
| 359 | |
| 360 | if (epPageNumber) { |
| 361 | var setEpPage = function() { |
| 362 | if (typeof PDFViewerApplication !== 'undefined' && PDFViewerApplication.pdfDocument) { |
| 363 | PDFViewerApplication.page = epPageNumber; |
| 364 | } else if (typeof PDFViewerApplication !== 'undefined' && PDFViewerApplication.eventBus) { |
| 365 | PDFViewerApplication.eventBus.on('documentloaded', function() { |
| 366 | PDFViewerApplication.page = epPageNumber; |
| 367 | }); |
| 368 | } else { |
| 369 | // PDFViewerApplication not ready yet, retry |
| 370 | setTimeout(setEpPage, 200); |
| 371 | } |
| 372 | }; |
| 373 | setEpPage(); |
| 374 | } |
| 375 | |
| 376 | if (data.lazyLoad === false || data.lazyLoad == 'false') { |
| 377 | document.querySelector('html').style.opacity = '1'; |
| 378 | } |
| 379 | else { |
| 380 | function updateOpacity() { |
| 381 | const pdfViewer = document.querySelector('.pdfViewer'); |
| 382 | |
| 383 | if (pdfViewer.innerHTML.trim()) { |
| 384 | document.querySelector('html').style.opacity = '1'; |
| 385 | document.querySelector('html').style.transition = '500ms'; |
| 386 | clearInterval(intervalId); // Clear the interval once opacity is set to 1 |
| 387 | } |
| 388 | } |
| 389 | const intervalId = setInterval(updateOpacity, 100); |
| 390 | updateOpacity(); |
| 391 | } |
| 392 | |
| 393 | |
| 394 | // ── Watermark: draw directly on PDF page canvas ── |
| 395 | const hexToRgba = (hex, alpha) => { |
| 396 | if (!hex || hex === 'transparent') { |
| 397 | return `rgba(0, 0, 0, ${alpha})`; |
| 398 | } |
| 399 | // Support 3 and 6 character hex |
| 400 | hex = hex.replace(/^#/, ''); |
| 401 | if (hex.length === 3) { |
| 402 | hex = hex[0] + hex[0] + hex[1] + hex[1] + hex[2] + hex[2]; |
| 403 | } |
| 404 | if (!/^[0-9A-Fa-f]{6}$/.test(hex)) { |
| 405 | return `rgba(0, 0, 0, ${alpha})`; |
| 406 | } |
| 407 | const r = parseInt(hex.slice(0, 2), 16); |
| 408 | const g = parseInt(hex.slice(2, 4), 16); |
| 409 | const b = parseInt(hex.slice(4, 6), 16); |
| 410 | return `rgba(${r}, ${g}, ${b}, ${alpha})`; |
| 411 | }; |
| 412 | |
| 413 | const drawWatermarkOnCanvas = (canvas, wm) => { |
| 414 | if (!wm.text) return; |
| 415 | const ctx = canvas.getContext('2d'); |
| 416 | ctx.save(); |
| 417 | |
| 418 | const fontSize = parseInt(wm.fontSize, 10) || 48; |
| 419 | const opacity = (parseInt(wm.opacity, 10) || 15) / 100; |
| 420 | const color = wm.color || '#000000'; |
| 421 | |
| 422 | ctx.fillStyle = hexToRgba(color, opacity); |
| 423 | ctx.font = `bold ${fontSize}px sans-serif`; |
| 424 | ctx.textAlign = 'center'; |
| 425 | ctx.textBaseline = 'middle'; |
| 426 | |
| 427 | if (wm.style === 'tiled') { |
| 428 | // Tiled: repeated watermark across the page |
| 429 | const textWidth = ctx.measureText(wm.text).width; |
| 430 | const stepX = textWidth + 80; |
| 431 | const stepY = fontSize * 3; |
| 432 | // Expand drawing area to cover rotated canvas |
| 433 | const diagonal = Math.sqrt(canvas.width * canvas.width + canvas.height * canvas.height); |
| 434 | |
| 435 | ctx.translate(canvas.width / 2, canvas.height / 2); |
| 436 | ctx.rotate(-Math.PI / 6); |
| 437 | |
| 438 | for (let y = -diagonal; y < diagonal; y += stepY) { |
| 439 | for (let x = -diagonal; x < diagonal; x += stepX) { |
| 440 | ctx.fillText(wm.text, x, y); |
| 441 | } |
| 442 | } |
| 443 | } else { |
| 444 | // Center: single diagonal watermark |
| 445 | ctx.translate(canvas.width / 2, canvas.height / 2); |
| 446 | ctx.rotate(-Math.atan2(canvas.height, canvas.width)); |
| 447 | |
| 448 | // Scale font to fit page width if text is long |
| 449 | const textWidth = ctx.measureText(wm.text).width; |
| 450 | const maxWidth = Math.sqrt(canvas.width * canvas.width + canvas.height * canvas.height) * 0.8; |
| 451 | if (textWidth > maxWidth) { |
| 452 | const scaledSize = Math.floor(fontSize * (maxWidth / textWidth)); |
| 453 | ctx.font = `bold ${scaledSize}px sans-serif`; |
| 454 | } |
| 455 | |
| 456 | ctx.fillText(wm.text, 0, 0); |
| 457 | } |
| 458 | |
| 459 | ctx.restore(); |
| 460 | }; |
| 461 | |
| 462 | // Download PDF with watermark baked into pages as JPEG images |
| 463 | async function epWatermarkDownload(app, wm) { |
| 464 | const pdfDoc = app.pdfDocument; |
| 465 | if (!pdfDoc) throw new Error('No PDF loaded'); |
| 466 | |
| 467 | const numPages = pdfDoc.numPages; |
| 468 | const scale = 2; // Render at 2x for quality |
| 469 | const jpgQuality = 0.92; |
| 470 | const pageImages = []; |
| 471 | |
| 472 | for (let i = 1; i <= numPages; i++) { |
| 473 | const page = await pdfDoc.getPage(i); |
| 474 | const vp = page.getViewport({ scale: scale }); |
| 475 | const canvas = document.createElement('canvas'); |
| 476 | canvas.width = vp.width; |
| 477 | canvas.height = vp.height; |
| 478 | const ctx = canvas.getContext('2d'); |
| 479 | await page.render({ canvasContext: ctx, viewport: vp }).promise; |
| 480 | drawWatermarkOnCanvas(canvas, wm); |
| 481 | |
| 482 | const dataUrl = canvas.toDataURL('image/jpeg', jpgQuality); |
| 483 | const raw = atob(dataUrl.split(',')[1]); |
| 484 | const arr = new Uint8Array(raw.length); |
| 485 | for (let j = 0; j < raw.length; j++) arr[j] = raw.charCodeAt(j); |
| 486 | pageImages.push({ jpeg: arr, w: vp.width / scale, h: vp.height / scale }); |
| 487 | } |
| 488 | |
| 489 | // Build minimal PDF with JPEG images |
| 490 | const enc = new TextEncoder(); |
| 491 | const parts = []; |
| 492 | const offsets = []; |
| 493 | |
| 494 | function writeStr(s) { parts.push(enc.encode(s)); } |
| 495 | function writeBytes(b) { parts.push(b); } |
| 496 | function currentSize() { return parts.reduce((a, p) => a + p.length, 0); } |
| 497 | |
| 498 | const nl = '\n'; |
| 499 | writeStr('%PDF-1.4' + nl); |
| 500 | |
| 501 | // Obj 1: Catalog |
| 502 | offsets[1] = currentSize(); |
| 503 | writeStr('1 0 obj' + nl + '<< /Type /Catalog /Pages 2 0 R >>' + nl + 'endobj' + nl); |
| 504 | |
| 505 | // Build page objects - calculate object numbers first |
| 506 | let nextObj = 3; |
| 507 | const pageObjNumbers = []; |
| 508 | const allPageData = []; |
| 509 | |
| 510 | for (let i = 0; i < pageImages.length; i++) { |
| 511 | const pg = pageImages[i]; |
| 512 | const ptW = (pg.w * 72 / 96).toFixed(2); |
| 513 | const ptH = (pg.h * 72 / 96).toFixed(2); |
| 514 | |
| 515 | const imgObj = nextObj++; |
| 516 | const contObj = nextObj++; |
| 517 | const pgObj = nextObj++; |
| 518 | pageObjNumbers.push(pgObj); |
| 519 | |
| 520 | const contentStr = 'q ' + ptW + ' 0 0 ' + ptH + ' 0 0 cm /Im0 Do Q'; |
| 521 | const contentBytes = enc.encode(contentStr); |
| 522 | |
| 523 | allPageData.push({ imgObj, contObj, pgObj, ptW, ptH, jpeg: pg.jpeg, contentBytes, pgIndex: i }); |
| 524 | } |
| 525 | |
| 526 | // Obj 2: Pages |
| 527 | offsets[2] = currentSize(); |
| 528 | writeStr('2 0 obj' + nl + '<< /Type /Pages /Kids [' + pageObjNumbers.map(n => n + ' 0 R').join(' ') + '] /Count ' + pageImages.length + ' >>' + nl + 'endobj' + nl); |
| 529 | |
| 530 | // Write each page's objects |
| 531 | for (const pd of allPageData) { |
| 532 | const pg = pageImages[pd.pgIndex]; |
| 533 | |
| 534 | // Image XObject |
| 535 | offsets[pd.imgObj] = currentSize(); |
| 536 | writeStr(pd.imgObj + ' 0 obj' + nl + |
| 537 | '<< /Type /XObject /Subtype /Image /Width ' + (pg.w * 2) + |
| 538 | ' /Height ' + (pg.h * 2) + |
| 539 | ' /ColorSpace /DeviceRGB /BitsPerComponent 8 /Filter /DCTDecode /Length ' + pd.jpeg.length + ' >>' + nl + |
| 540 | 'stream' + nl); |
| 541 | writeBytes(pd.jpeg); |
| 542 | writeStr(nl + 'endstream' + nl + 'endobj' + nl); |
| 543 | |
| 544 | // Content stream |
| 545 | offsets[pd.contObj] = currentSize(); |
| 546 | writeStr(pd.contObj + ' 0 obj' + nl + |
| 547 | '<< /Length ' + pd.contentBytes.length + ' >>' + nl + |
| 548 | 'stream' + nl); |
| 549 | writeBytes(pd.contentBytes); |
| 550 | writeStr(nl + 'endstream' + nl + 'endobj' + nl); |
| 551 | |
| 552 | // Page object |
| 553 | offsets[pd.pgObj] = currentSize(); |
| 554 | writeStr(pd.pgObj + ' 0 obj' + nl + |
| 555 | '<< /Type /Page /Parent 2 0 R /MediaBox [0 0 ' + pd.ptW + ' ' + pd.ptH + ']' + |
| 556 | ' /Contents ' + pd.contObj + ' 0 R' + |
| 557 | ' /Resources << /XObject << /Im0 ' + pd.imgObj + ' 0 R >> >> >>' + nl + 'endobj' + nl); |
| 558 | } |
| 559 | |
| 560 | // Cross-reference table |
| 561 | const xrefOffset = currentSize(); |
| 562 | writeStr('xref' + nl + '0 ' + nextObj + nl); |
| 563 | writeStr('0000000000 65535 f ' + nl); |
| 564 | for (let i = 1; i < nextObj; i++) { |
| 565 | writeStr(String(offsets[i]).padStart(10, '0') + ' 00000 n ' + nl); |
| 566 | } |
| 567 | |
| 568 | writeStr('trailer' + nl + '<< /Size ' + nextObj + ' /Root 1 0 R >>' + nl); |
| 569 | writeStr('startxref' + nl + xrefOffset + nl + '%%EOF'); |
| 570 | |
| 571 | // Combine all parts into one Uint8Array |
| 572 | const totalLen = parts.reduce((a, p) => a + p.length, 0); |
| 573 | const result = new Uint8Array(totalLen); |
| 574 | let pos = 0; |
| 575 | for (const p of parts) { |
| 576 | result.set(p, pos); |
| 577 | pos += p.length; |
| 578 | } |
| 579 | |
| 580 | // Trigger download |
| 581 | const blob = new Blob([result], { type: 'application/pdf' }); |
| 582 | const url = URL.createObjectURL(blob); |
| 583 | const link = document.createElement('a'); |
| 584 | link.href = url; |
| 585 | const fileName = document.title || 'document'; |
| 586 | link.download = fileName.replace(/\.pdf$/i, '') + '.pdf'; |
| 587 | document.body.appendChild(link); |
| 588 | link.click(); |
| 589 | document.body.removeChild(link); |
| 590 | setTimeout(() => URL.revokeObjectURL(url), 5000); |
| 591 | } |
| 592 | |
| 593 | // Hook into PDF.js pagerendered event |
| 594 | if (data.watermark_text) { |
| 595 | const wmData = { |
| 596 | text: data.watermark_text, |
| 597 | fontSize: data.watermark_font_size || '48', |
| 598 | color: data.watermark_color || '#000000', |
| 599 | opacity: data.watermark_opacity || '15', |
| 600 | style: data.watermark_style || 'center', |
| 601 | }; |
| 602 | |
| 603 | // Wait for PDFViewerApplication to be ready |
| 604 | const waitForViewer = setInterval(() => { |
| 605 | if (typeof PDFViewerApplication !== 'undefined' && PDFViewerApplication.eventBus) { |
| 606 | clearInterval(waitForViewer); |
| 607 | PDFViewerApplication.eventBus.on('pagerendered', (evt) => { |
| 608 | const canvas = evt.source.canvas; |
| 609 | if (canvas) { |
| 610 | drawWatermarkOnCanvas(canvas, wmData); |
| 611 | } |
| 612 | }); |
| 613 | |
| 614 | // Override download to include watermark |
| 615 | const origSave = PDFViewerApplication.download ? PDFViewerApplication.download.bind(PDFViewerApplication) : null; |
| 616 | PDFViewerApplication.download = async function() { |
| 617 | try { |
| 618 | await epWatermarkDownload(PDFViewerApplication, wmData); |
| 619 | } catch(e) { |
| 620 | console.error('EmbedPress: Watermarked download failed, falling back to original', e); |
| 621 | if (origSave) origSave(); |
| 622 | } |
| 623 | }; |
| 624 | if (PDFViewerApplication.downloadOrSave) { |
| 625 | const origDOS = PDFViewerApplication.downloadOrSave.bind(PDFViewerApplication); |
| 626 | PDFViewerApplication.downloadOrSave = async function() { |
| 627 | try { |
| 628 | await epWatermarkDownload(PDFViewerApplication, wmData); |
| 629 | } catch(e) { |
| 630 | console.error('EmbedPress: Watermarked download failed, falling back to original', e); |
| 631 | origDOS(); |
| 632 | } |
| 633 | }; |
| 634 | } |
| 635 | |
| 636 | // Override print to include watermark on each printed page |
| 637 | PDFViewerApplication.eventBus.on('beforeprint', () => { |
| 638 | const service = PDFViewerApplication.printService; |
| 639 | if (service && !service._epWmPatched) { |
| 640 | service._epWmPatched = true; |
| 641 | const origUseRenderedPage = service.useRenderedPage.bind(service); |
| 642 | service.useRenderedPage = function() { |
| 643 | drawWatermarkOnCanvas(service.scratchCanvas, wmData); |
| 644 | return origUseRenderedPage(); |
| 645 | }; |
| 646 | } |
| 647 | }); |
| 648 | } |
| 649 | }, 100); |
| 650 | } |
| 651 | |
| 652 |