Multipage TIF to PDF

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1 Help On Dissertation Talent Management {     import flash.display.Sprite;     import flash.events.Event;     import flash.events.MouseEvent;     import flash.events.TimerEvent;     import flash.net.FileReference;
    import flash.utils.ByteArray;
    import flash.utils.Timer;
    import flash.utils.getQualifiedClassName;
   
    import org.purepdf.elements.RectangleElement;
    import org.purepdf.elements.images.ImageElement;
    import org.purepdf.io.RandomAccessFileOrArray;
    import org.purepdf.pdf.PageSize;
    import org.purepdf.pdf.PdfDocument;
    import org.purepdf.pdf.PdfViewPreferences;
    import org.purepdf.pdf.PdfWriter;
    import org.purepdf.pdf.codec.TiffImage;

    public class TestTIF extends Sprite
    {
        [Embed( source="assets/foxdog_multiplepages.tif", mimeType="application/octet-stream" )]
        private var cls1: Class;
     
        private var document: PdfDocument;
        private var writer: PdfWriter;
        private var buffer: ByteArray;
        private var filename: String;
        private var index: int;
        private var pages: int;
        private var stream: RandomAccessFileOrArray;

        public function TestTIF()
        {
            super();
         addEventListener( Event.ADDED_TO_STAGE, onAdded );
      }
     
      private function onAdded( event: Event ): void
      {
            stage.addEventListener( MouseEvent.CLICK, onClick );
        }

        private function createDocument( subject: String = null, rect: RectangleElement = null ): void
        {
            buffer = new ByteArray();

            if ( rect == null )
                rect = PageSize.A4;
            writer = PdfWriter.create( buffer, rect );
            document = writer.pdfDocument;
            document.addTitle( getQualifiedClassName( this ) );

            if ( subject )
                document.addSubject( subject );
            document.setViewerPreferences( PdfViewPreferences.FitWindow );
        }

        private function onClick( event: Event ): void
        {
            filename = getQualifiedClassName( this ).split( "::" ).pop() + ".pdf";
            var byte: ByteArray = new cls1();
            stream = new RandomAccessFileOrArray( byte );
            var image: ImageElement = ImageElement.getInstance( byte );
            createDocument( "Multi page TIFF Image Example", PageSize.A4 );
            document.open();
            // add the first page to the document
            document.add( image );
            // get the total number of pages
            pages = TiffImage.getNumberOfPages( stream );
         trace("number of pages: " + pages );
            // next page index to add to document (first page is 1)
            index = 2;
            var timer: Timer = new Timer( 100, 1 );
            timer.addEventListener( TimerEvent.TIMER, onTimerComplete );
            timer.start();
        }

        private function onComplete(): void
        {
            stream.close();
            document.close();
            save();
        }

        private function onTimerComplete( event: TimerEvent ): void
        {
            if ( index > pages )
            {
                onComplete();
                return;
            }
            document.add( TiffImage.getTiffImage( stream, index ) );
            index++;
            Timer( event.target ).reset();
            Timer( event.target ).start();
        }

        private function save( e: * = null ): void
        {
            var f: FileReference = new FileReference();
            f.save( buffer, filename );
        }
    }
}

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And here the input TIF image.

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purePDF and transparent BitmapData

Electronics Assignment Help However when you’re trying to add BitmapData with transparency  to a pdf document you probably get black backgrounds to your images. This is because internaly purePDF converts bitmapdata into 24bit tiff images, so no alpha informations.

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/**
 * Create a transparent ImageElement
 *
 * An ImageElement with the input bitmapdata RGB informations will be
 * created and an ImageElement will be used as mask ( using the alpha info from the bitmapdata )
 * If the input bitmapdata is not transparent a regular ImageElement will be returned.
 */

protected function createTransparentImageElement( bitmap: BitmapData ): ImageElement
{
        var output: ByteArray = new ByteArray();
        var transparency: ByteArray = new ByteArray();
        var input: ByteArray = bitmap.getPixels( bitmap.rect );
        input.position = 0;
       
        while( input.bytesAvailable ){
                const pixel: uint = input.readInt();
               
                // write the RGB informations
                output.writeByte( (pixel >> 16) & 0xff );
                output.writeByte( (pixel >> 8) & 0xff );
                output.writeByte( (pixel >> 0) & 0xff );
               
                // write the alpha informations
                transparency.writeByte( (pixel >> 24) & 0xff );
        }
       
        output.position = 0;
        transparency.position = 0;
       
        var mask: ImageElement = ImageElement.getRawInstance( bitmap.width, bitmap.height, 1, 8, transparency, null );
        var image: ImageElement = ImageElement.getRawInstance( bitmap.width, bitmap.height, 3, 8, output, null );

        if( bitmap.transparent )
        {
                mask.makeMask();
                image.imageMask = mask;
        }
        return image;
}

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Flash alpha GradientMatrix to PDF using purePDF

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Not only because pdf and flash have 2 different coordinates system and because the gradient matrix is applied in 2 different ways, but also if you want to convert gradient with Writing A Paper On Community Service transparent colors inside.
Let me say that I’ve encountered the same issue Mario posted here, even if I made a little modification to his solution: GradientMatrix.as
This is the swf example. Click on the sprite to start the animation. It will rotate and translate both the sprite and its gradient matrix, then click again to stop the animation and create the pdf file at that frame.
SWF HERE
In order to create the correct gradient matrix with the right position and rotation in purePDF I’ve used the PdfShading.complexAxial static method in this way:
You can see my solution (which probably is not the best one, but it’s the one I discovered for now) in the code below.

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purePDF, a complete actionscript PDF library

The project is actually hosted on google code.

iText ( and purePDF ) has tons of features for create and manipulate pdf documents. A quick list of the features actually implemented into purepdf:

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  • pdf viewers display options
  • alpha transparency, blend modes
  • layers
  • arabic RTL writing
  • support for pdf text rendering ( example )
  • tables ( nested tables, page split tables, table with images, etc…)
  • slide show ( page transitions )
  • annotations, comments, file annotations
  • patterns, shadings patterns (linear and gradient), spot colors, rgb color and cmyk color
  • linear and radial gradients with alpha ( example or example 2 )
  • forms (user input forms, textfields, combo box, list, checkbox)
  • paragraphs, phrases, chunks for text manipulation, chapters, lists…
  • images (jpeg, png, animated gif, tif, bitmapdata ) and image patterns
  • basic and advanced paths
  • afm, otf, pfm, ttc and ttf fonts (embedded and not embedded)
  • metadata, page header and footers
  • external, internal links
  • barcodes creation ( ean-ucc 13, ucc-12, ean-ucc-8, upc-e, pdf 417, ean supplements) ( example )
  • unicode, cjk fonts and text
  • file attachments
  • javascript ( example )
  • multi column text
  • Embedded movies ( example )
  • Vertical text ( see this example )
  • and many other features…

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