B4A Library PDFium - Pdfview2

• Configurator
  • Events:
    • loadComplete (pages As Int)
    • onInitiallyRendered (page As Int)
    • onPageChanged (oldPage As Int, newPage As Int)
    • PageNum (page As Int)
    • Show()
  • Functions:
    • addLinkHandler As Configurator
      
    • addOnDrawListener As Configurator
      
    • addOnErrorListener As Configurator
      
    • addOnLoadCompleteListener As Configurator
      
    • addOnPageChangeListener As Configurator
      
    • addOnPageErrorListener As Configurator
      
    • addOnPageScrollListener As Configurator
      
    • addOnRenderListener As Configurator
      
    • addOnTapListener As Configurator
      
    • addScrollHandle As Configurator
      
    • autoSpacing (autoSpacing As Boolean) As Configurator
      
    • defaultPage (defaultPage As Int) As Configurator
      
    • enableAnnotationRendering (annotationRendering As Boolean) As Configurator
      
    • enableAntialiasing (antialiasing As Boolean) As Configurator
      
    • enableDoubletap (enableDoubletap As Boolean) As Configurator
      
    • enableSwipe (enableSwipe As Boolean) As Configurator
      
    • IsInitialized As Boolean
      
    • load As Configurator
      
    • nightMode (nightMode As Boolean) As Configurator
      
    • pageFitPolicy (pageFitPolicy As com.github.barteksc.pdfviewer.util.FitPolicy) As Configurator
      
    • pageFling (pageFling As Boolean) As Configurator
      
    • pages (pageNumbers As Int) As Configurator
      
    • pageSnap (pageSnap As Boolean) As Configurator
      
    • password (password As String) As Configurator
      
    • SetEventname (EventName As String)
      
    • spacing (spacing As Int) As Configurator
      
    • swipeHorizontal (swipeHorizontal As Boolean) As Configurator
• PDFView
  • Functions:
    • BringToFront
      
    • DesignerCreateView (base As Panel, lw As Label, props As Map)
      
    • doAutoSpacing As Boolean
      
    • doPageFling As Boolean
      
    • doPageSnap As Boolean
      
    • doRenderDuringScale As Boolean
      
    • enableAnnotationRendering (annotationRendering As Boolean)
      
    • enableAntialiasing (enableAntialiasing As Boolean)
      
    • enableRenderDuringScale (renderDuringScale As Boolean)
      
    • fitToWidth (page As Int)
      
    • fromAsset (assetName As String) As com.github.barteksc.pdfviewer.PDFView.Configurator
      Use an asset file as the pdf source
    • fromBytes (bytes As Byte()) As com.github.barteksc.pdfviewer.PDFView.Configurator
      Use bytearray as the pdf source, documents is not saved
    • fromFile (path As String, filename As String) As com.github.barteksc.pdfviewer.PDFView.Configurator
      Use a file as the pdf source
      path:
      filename:
    • fromSource (docSource As com.github.barteksc.pdfviewer.source.DocumentSource) As com.github.barteksc.pdfviewer.PDFView.Configurator
      Use custom source as pdf source
    • fromStream (stream As java.io.InputStream) As com.github.barteksc.pdfviewer.PDFView.Configurator
      Use stream as the pdf source. Stream will be written to bytearray, because native code does not support Java Streams
    • fromUri (path As String, filename As String) As com.github.barteksc.pdfviewer.PDFView.Configurator
      Use URI as the pdf source, for use with content providers
    • getLinks (page As Int) As java.util.List
      Will be empty until document is loaded
    • getPageAtPositionOffset (positionOffset As Float) As Int
      Get page number at given offset
      positionOffset: scroll offset between 0 and 1
      Return type: @returnage number at given offset, starting from 0
    • getPageSize (pageIndex As Int) As com.shockwave.pdfium.util.SizeF
      
    • Initialize (EventName As String)
      
    • Invalidate
      
    • Invalidate2 (arg0 As android.graphics.Rect)
      
    • Invalidate3 (arg0 As Int, arg1 As Int, arg2 As Int, arg3 As Int)
      
    • IsInitialized As Boolean
      
    • jumpTo (page As Int)
      
    • jumpTo2 (page As Int, withAnimation As Boolean)
      Go to the given page.
      page: Page index.
    • loadPages
      Load all the parts around the center of the screen,
      taking into account X and Y offsets, zoom level, and
      the current page displayed
    • moveRelativeTo (dx As Float, dy As Float)
      Move relatively to the current position.
      dx: The X difference you want to apply.
      dy: The Y difference you want to apply.
    • moveTo (offsetX As Float, offsetY As Float)
      
    • moveTo2 (offsetX As Float, offsetY As Float, moveHandle As Boolean)
      Move to the given X and Y offsets, but check them ahead of time
      to be sure not to go outside the the big strip.
      offsetX: The big strip X offset to use as the left border of the screen.
      offsetY: The big strip Y offset to use as the right border of the screen.
      moveHandle: whether to move scroll handle or not
    • onBitmapRendered (part As com.github.barteksc.pdfviewer.model.PagePart)
      Called when a rendering task is over and
      a PagePart has been freshly created.
      part: The created PagePart.
    • performPageSnap
      Animate to the nearest snapping position for the current SnapPolicy
    • recycle
      
    • RemoveView
      
    • RequestFocus As Boolean
      
    • resetZoom
      
    • resetZoomWithAnimation
      
    • SendToBack
      
    • SetBackgroundImage (arg0 As android.graphics.Bitmap) As BitmapDrawable
      
    • SetColorAnimated (arg0 As Int, arg1 As Int, arg2 As Int)
      
    • SetLayout (arg0 As Int, arg1 As Int, arg2 As Int, arg3 As Int)
      
    • SetLayoutAnimated (arg0 As Int, arg1 As Int, arg2 As Int, arg3 As Int, arg4 As Int)
      
    • setPositionOffset2 (progress As Float, moveHandle As Boolean)
      
      progress: must be between 0 and 1
      moveHandle: whether to move scroll handle
    • SetVisibleAnimated (arg0 As Int, arg1 As Boolean)
      
    • stopFling
      
    • toCurrentScale (size As Float) As Float
      
    • toRealScale (size As Float) As Float
      
    • useBestQuality (bestQuality As Boolean)
      
    • zoomCenteredRelativeTo (dzoom As Float, pivot As android.graphics.PointF)
      
    • zoomCenteredTo (zoom As Float, pivot As android.graphics.PointF)
      Change the zoom level, relatively to a pivot point.
      It will call moveTo() to make sure the given point stays
      in the middle of the screen.
      zoom: The zoom level.
      pivot: The point on the screen that should stays.
    • zoomTo (zoom As Float)
      Change the zoom level
    • zoomWithAnimation (scale As Float)
      
    • zoomWithAnimation2 (centerX As Float, centerY As Float, scale As Float)
  • Properties:
    • AnnotationRendering As Boolean [read only]
      
    • Antialiasing As Boolean [read only]
      
    • Background As android.graphics.drawable.Drawable
      
    • BestQuality As Boolean [read only]
      
    • Color As Int [write only]
      
    • CurrentPage As Int [read only]
      
    • CurrentXOffset As Float [read only]
      
    • CurrentYOffset As Float [read only]
      
    • documentFitsView As Boolean [read only]
      Checks if whole document can be displayed on screen, doesn't include zoom
    • DocumentMeta As com.shockwave.pdfium.PdfDocument.Meta [read only]
      Returns null if document is not loaded
    • Enabled As Boolean
      
    • Height As Int
      
    • Left As Int
      
    • MaxZoom As Float
      
    • MidZoom As Float
      
    • MinZoom As Float
      
    • NightMode As Boolean [write only]
      
    • Padding As Int()
      
    • PageCount As Int [read only]
      
    • pageFillsScreen As Boolean [read only]
      
    • PageFitPolicy As com.github.barteksc.pdfviewer.util.FitPolicy [read only]
      
    • PageFling As Boolean [write only]
      
    • PageSnap As Boolean [write only]
      
    • Parent As Object [read only]
      
    • PositionOffset As Float
      Get current position as ratio of document length to visible area.
      0 means that document start is visible, 1 that document end is visible
    • Recycled As Boolean [read only]
      
    • SpacingPx As Int [read only]
      
    • SwipeEnabled As Boolean
      
    • SwipeVertical As Boolean [read only]
      
    • TableOfContents As java.util.List [read only]
      Will be empty until document is loaded
    • Tag As Object
      
    • Top As Int
      
    • Visible As Boolean
      
    • Width As Int
      
    • Zoom As Float [read only]
      
    • Zooming As Boolean [read only]
• PdfDocument
  • Functions:
    • hasPage (index As Int) As Boolean
      
    • Initialize (doc As com.shockwave.pdfium.PdfDocument)
      
    • IsInitialized As Boolean
• PdfDocumentMeta
  • Functions:
    • IsInitialized As Boolean
  • Properties:
    • CreationDate As String [read only]
      
    • Creator As String [read only]
      
    • Keywords As String [read only]
      
    • ModDate As String [read only]
      
    • Producer As String [read only]
      
    • Subject As String [read only]
      
    • Title As String [read only]
• PdfSize
  • Functions:
    • equals (obj As Object) As Boolean
      
    • Initialize (width As Int, height As Int)
      
    • IsInitialized As Boolean
  • Properties:
    • Height As Int [read only]
      
    • Width As Int [read only]
• PdfiumCore
  • Functions:
    • closeDocument (doc As com.shockwave.pdfium.PdfDocument)
      Release native resources and opened file
    • getDocumentMeta (doc As com.shockwave.pdfium.PdfDocument) As com.shockwave.pdfium.PdfDocument.Meta
      Get metadata for given document
    • getNumFd (fdObj As android.os.ParcelFileDescriptor) As Int
      
    • getPageCount (doc As com.shockwave.pdfium.PdfDocument) As Int
      Get total numer of pages in document
    • getPageHeight (doc As com.shockwave.pdfium.PdfDocument, index As Int) As Int
      Get page height in pixels. <br>
      This method requires page to be opened.
    • getPageHeightPoint (doc As com.shockwave.pdfium.PdfDocument, index As Int) As Int
      Get page height in PostScript points (1/72th of an inch).<br>
      This method requires page to be opened.
    • getPageLinks (doc As com.shockwave.pdfium.PdfDocument, pageIndex As Int) As java.util.List
      Get all links from given page
    • getPageSize (doc As com.shockwave.pdfium.PdfDocument, index As Int) As com.shockwave.pdfium.util.Size
      Get size of page in pixels.<br>
      This method does not require given page to be opened.
    • getPageWidth (doc As com.shockwave.pdfium.PdfDocument, index As Int) As Int
      Get page width in pixels. <br>
      This method requires page to be opened.
    • getPageWidthPoint (doc As com.shockwave.pdfium.PdfDocument, index As Int) As Int
      Get page width in PostScript points (1/72th of an inch).<br>
      This method requires page to be opened.
    • getTableOfContents (doc As com.shockwave.pdfium.PdfDocument) As java.util.List
      Get table of contents (bookmarks) for given document
    • Initialize (EventName As String)
      
    • loadComplete (arg0 As Int)
      
    • mapPageCoordsToDevice (doc As com.shockwave.pdfium.PdfDocument, pageIndex As Int, startX As Int, startY As Int, sizeX As Int, sizeY As Int, rotate As Int, pageX As Double, pageY As Double) As android.graphics.Point
      Map page coordinates to device screen coordinates
      doc: pdf document
      pageIndex: index of page
      startX: left pixel position of the display area in device coordinates
      startY: top pixel position of the display area in device coordinates
      sizeX: horizontal size (in pixels) for displaying the page
      sizeY: vertical size (in pixels) for displaying the page
      rotate: page orientation: 0 (normal), 1 (rotated 90 degrees clockwise),
      2 (rotated 180 degrees), 3 (rotated 90 degrees counter-clockwise)
      pageX: X value in page coordinates
      pageY: Y value in page coordinate
      Return type: @return:mapped coordinates
    • mapRectToDevice (doc As com.shockwave.pdfium.PdfDocument, pageIndex As Int, startX As Int, startY As Int, sizeX As Int, sizeY As Int, rotate As Int, coords As android.graphics.RectF) As android.graphics.RectF
      
      Return type: @return:mapped coordinates
    • onPageChanged (arg0 As Int, arg1 As Int)
      
    • onPageError (arg0 As Int, arg1 As Throwable)
      
    • openPage (doc As com.shockwave.pdfium.PdfDocument, pageIndex As Int) As Long
      Open page and store native pointer in {@link PdfDocument}
    • renderPage (doc As com.shockwave.pdfium.PdfDocument, surface As android.view.Surface, pageIndex As Int, startX As Int, startY As Int, drawSizeX As Int, drawSizeY As Int)
      Render page fragment on {@link Surface}.<br>
      Page must be opened before rendering.
    • renderPage2 (doc As com.shockwave.pdfium.PdfDocument, surface As android.view.Surface, pageIndex As Int, startX As Int, startY As Int, drawSizeX As Int, drawSizeY As Int, renderAnnot As Boolean)
      Render page fragment on {@link Surface}. This method allows to render annotations.<br>
      Page must be opened before rendering.
    • renderPageBitmap (doc As com.shockwave.pdfium.PdfDocument, bitmap As android.graphics.Bitmap, pageIndex As Int, startX As Int, startY As Int, drawSizeX As Int, drawSizeY As Int)
      Render page fragment on {@link Bitmap}.<br>
      Page must be opened before rendering.
      <p>
      Supported bitmap configurations:
      <ul>
      <li>ARGB_8888 - best quality, high memory usage, higher possibility of OutOfMemoryError
      <li>RGB_565 - little worse quality, twice less memory usage
      </ul>
    • renderPageBitmap2 (doc As com.shockwave.pdfium.PdfDocument, bitmap As android.graphics.Bitmap, pageIndex As Int, startX As Int, startY As Int, drawSizeX As Int, drawSizeY As Int, renderAnnot As Boolean)
      Render page fragment on {@link Bitmap}. This method allows to render annotations.<br>
      Page must be opened before rendering.
      <p>
      For more info see {@link PdfiumCore#renderPageBitmap(PdfDocument, Bitmap, int, int, int, int, int)}

Sub Globals
    'These global variables will be redeclared each time the activity is created.
    'These variables can only be accessed from this module.
    Private btnFirst As Button
    Private btnPrev As Button
    Private lblPages As Label
    Private btnNext As Button
    Private btnLast As Button
    Private glPages As Int
    Dim pdf As PdfiumCore
    Private PDFView1 As PDFView
End Sub
Sub Activity_Create(FirstTime As Boolean)
    'Do not forget to load the layout file created with the visual designer. For example:
    Activity.LoadLayout("Layout1")
    pdf.Initialize("PDFium")
    File.Copy(File.DirAssets,"sample.pdf",File.DirInternal,"sample.pdf")
    Dim cfg As Configurator = PDFView1.fromUri(File.DirInternal,"sample.pdf")
    cfg.SetEventname("PDFium")
    cfg.autoSpacing(True).enableSwipe(True).pageSnap(True).swipeHorizontal(False).addOnErrorListener.addOnLoadCompleteListener.addOnPageChangeListener.addOnPageErrorListener.addOnTapListener.load
End Sub

Sub PDFium_loadComplete(pages As Int)
    Log($"PDFium_loadComplete(${pages})"$)
    glPages = pages
    lblPages.Text = $"${glPages}"$
End Sub
Sub PDFium_onInitiallyRendered(page As Int)

Copyright 2017 Bartosz Schiller

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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