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014-pdfJS-Static_PDF_Viewer.au3
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‎examples/014-pdfJS-Static_PDF_Viewer.au3‎

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#WIP - this Example is imported from 1.5.0 UDF - and is in "WORK IN PROGRESS" state
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#AutoIt3Wrapper_UseX64=n
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#AutoIt3Wrapper_Run_AU3Check=Y
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#AutoIt3Wrapper_AU3Check_Stop_OnWarning=y
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#AutoIt3Wrapper_AU3Check_Parameters=-d -w 1 -w 2 -w 3 -w 4 -w 5 -w 6 -w 7
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#Au3Stripper_Ignore_Funcs=__NetWebView2_WebEvents_*,__NetWebView2_JSEvents_*
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; 014-pdfJS-Static_PDF_Viewer.au3
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; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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; ⚠️ to make this work, download pdfJS library from https://mozilla.github.io/pdf.js/
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; for example:
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; https://github.com/mozilla/pdf.js/releases/download/v5.4.530/pdfjs-5.4.530-dist.zip
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; and unzip to: @ScriptDir & "\JS_Lib\pdfjs\"
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; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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#include <GUIConstantsEx.au3>
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#include <WindowsConstants.au3>
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#include "..\NetWebView2Lib.au3"
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; Global objects
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Global $oBridge
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Global $hGUI
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_Example()
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Func _Example()
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Local $oMyError = ObjEvent("AutoIt.Error", __NetWebView2_COMErrFunc)
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#forceref $oMyError
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#Region ; GUI CREATION
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; Create the GUI
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$hGUI = GUICreate("WebView2 .NET Manager", 800, 1000)
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; Get the WebView2 Manager object and register events
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Local $oWeb = _NetWebView2_CreateManager("Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36 Edg/144.0.0.0", _
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"", "--allow-file-access-from-files") ; 👈
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; initialize browser - put it on the GUI
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Local $sProfileDirectory = @ScriptDir & "\NetWebView2Lib-UserDataFolder"
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_NetWebView2_Initialize($oWeb, $hGUI, $sProfileDirectory, 0, 0, 0, 0, True, False, False, 0.7)
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; Get the bridge object and register events
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_NetWebView2_GetBridge($oWeb, "__MyEVENTS_Bridge_")
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; show the GUI after browser was fully initialized
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GUISetState(@SW_SHOW)
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#EndRegion ; GUI CREATION
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; navigate to the page
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__SetupStaticPDF($oWeb, @ScriptDir & "\invoice-plugin-sample.pdf", True, True)
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_NetWebView2_ExecuteScript($oWeb, "extractPDFText();", $NETWEBVIEW2_EXECUTEJS_MODE0_FIREANDFORGET)
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; Main Loop
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While 1
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Switch GUIGetMsg()
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Case $GUI_EVENT_CLOSE
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ExitLoop
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EndSwitch
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WEnd
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GUIDelete($hGUI)
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_NetWebView2_CleanUp($oWeb, $oBridge)
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EndFunc ;==>_Example
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; Handles custom messages from JavaScript (window.chrome.webview.postMessage)
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Func __MyEVENTS_Bridge_OnMessageReceived($sMsg)
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ConsoleWrite(">>> [__EVENTS_Bridge]: " & (StringLen($sMsg) > 150 ? StringLeft($sMsg, 150) & "..." : $sMsg) & @CRLF)
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Local $sFirstChar = StringLeft($sMsg, 1)
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If $sFirstChar = "{" Or $sFirstChar = "[" Then ; 1. JSON Messaging
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ConsoleWrite("+> : Processing JSON Messaging..." & @CRLF)
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Local $oJson = ObjCreate("NetJson.Parser")
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If Not IsObj($oJson) Then Return ConsoleWrite("!> Error: Failed to create NetJson object." & @CRLF)
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$oJson.Parse($sMsg)
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Local $sJobType = $oJson.GetTokenValue("type")
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Switch $sJobType
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Case "COM_TEST"
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ConsoleWrite("- COM_TEST Confirmed: " & $oJson.GetTokenValue("status") & @CRLF)
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EndSwitch
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Else ; 2. Legacy / Native Pipe-Delimited Messaging
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ConsoleWrite("+> : Legacy / Native Pipe-Delimited Messaging..." & @CRLF)
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Local $sCommand, $sData, $iSplitPos
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$iSplitPos = StringInStr($sMsg, "|") - 1
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If $iSplitPos < 0 Then
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$sCommand = StringStripWS($sMsg, 3)
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$sData = ""
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Else
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$sCommand = StringStripWS(StringLeft($sMsg, $iSplitPos), 3)
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$sData = StringTrimLeft($sMsg, $iSplitPos + 1)
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EndIf
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Switch $sCommand
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Case "COM_TEST"
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ConsoleWrite("- Status: Legacy COM_TEST: " & $sData & @CRLF)
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Case "PDF_TEXT"
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ConsoleWrite("- PDF_TEXT: " & @CRLF & $sData & @CRLF)
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Case "ERROR"
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ConsoleWrite("! Status: " & $sData & @CRLF)
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EndSwitch
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EndIf
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EndFunc ;==>__MyEVENTS_Bridge_OnMessageReceived
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Func __SetupStaticPDF(ByRef $oWeb, $s_PDF_Path, $bBlockLinks = False, $bBlockSelection = False)
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; 🏆 https://mozilla.github.io/pdf.js/
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Local $sBlockLinksJS = ""
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Local $sBlockLinksCSS = ""
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Local $sSelectionCSS = ""
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; 1. Configuration for BlockLinks
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If $bBlockLinks Then
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$sBlockLinksJS = _
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"window.addEventListener('click', function(e) {" & _
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" if (e.target.tagName === 'A' || e.target.closest('a')) {" & _
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" e.stopImmediatePropagation();" & _
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" e.preventDefault();" & _
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" }" & _
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"}, { capture: true });"
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$sBlockLinksCSS = " .annotationLayer { pointer-events: none !important; } "
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EndIf
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; 2. Configuration for Text Selection
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If $bBlockSelection Then
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$sSelectionCSS = " .textLayer, body { -webkit-user-select: none !important; user-select: none !important; cursor: default !important; } "
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EndIf
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; 3. Final Script Construction
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Local $sCleanupJS = _
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"/* 1. Block Zoom (Wheel & Keys) */ " & _
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"window.addEventListener('wheel', function(e) {" & _
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" if (e.ctrlKey) {" & _
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" e.stopImmediatePropagation();" & _
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" e.preventDefault();" & _
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" }" & _
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"}, { passive: false, capture: true });" & _
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"window.addEventListener('keydown', function(e) {" & _
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" if (e.ctrlKey && ['+', '-', '=', '0'].includes(e.key)) {" & _
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" e.stopImmediatePropagation();" & _
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" e.preventDefault();" & _
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" }" & _
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"}, { capture: true });" & _
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$sBlockLinksJS & _
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"/* 2. PDF Text Extraction Function with Auto-Wait */ " & _
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"window.extractPDFText = async function() {" & _
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" const runExtraction = async () => {" & _
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" try {" & _
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" if (typeof PDFViewerApplication !== 'undefined' && PDFViewerApplication.pdfDocument) {" & _
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" const pdf = PDFViewerApplication.pdfDocument;" & _
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" let text = '';" & _
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" for (let i = 1; i <= pdf.numPages; i++) {" & _
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" const page = await pdf.getPage(i);" & _
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" const content = await page.getTextContent();" & _
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" text += content.items.map(item => item.str).join(' ') + '\n';" & _
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" }" & _
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" window.chrome.webview.postMessage('PDF_TEXT|' + text);" & _
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" } else {" & _
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" setTimeout(runExtraction, 500);" & _
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" }" & _
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" } catch (e) {" & _
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" window.chrome.webview.postMessage('ERROR|' + e.message);" & _
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" }" & _
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" };" & _
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" runExtraction();" & _
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"};" & _
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"/* 3. Style Injection */ " & _
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"window.addEventListener('DOMContentLoaded', () => {" & _
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" const style = document.createElement('style');" & _
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" style.innerHTML = '#toolbarContainer, #sidebarContainer { display: none !important; } ' + " & _
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" '#viewerContainer { top: 0 !important; bottom: 0 !important; overflow: hidden !important; } ' + " & _
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" '" & $sBlockLinksCSS & "' + " & _
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" '" & $sSelectionCSS & "' + " & _
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" ' ::-webkit-scrollbar { display: none !important; }';" & _
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" document.head.appendChild(style);" & _
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"});"
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$oWeb.AddInitializationScript($sCleanupJS)
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; Fix slashes in Path for URL
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Local $s_PDF_URL = StringReplace($s_PDF_Path, "\", "/")
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$s_PDF_URL = StringReplace($s_PDF_URL, ' ', '%20')
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Local $s_PDF_JS_URL = StringReplace(@ScriptDir & "\JS_Lib\pdfjs\web\viewer.html" & "?file=", "\", "/")
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Local $s_Viewer_URL = "file:///" & $s_PDF_JS_URL & $s_PDF_URL
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ConsoleWrite("- $s_Viewer_URL= " & $s_Viewer_URL & @CRLF)
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$oWeb.Navigate($s_Viewer_URL)
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; $oWeb.IsZoomControlEnabled = False ; <--- It doesn't work in PDF. 👈
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$oWeb.DisableBrowserFeatures()
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$oWeb.LockWebView()
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EndFunc ;==>__SetupStaticPDF

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