org.ametys.plugins.flipbook.pdfbox

Class PdfboxConvertor

java.lang.Object

org.apache.avalon.framework.logger.AbstractLogEnabled

org.ametys.plugins.flipbook.pdfbox.PdfboxConvertor

All Implemented Interfaces:

Document2ImagesConvertor, LogEnabled

public class PdfboxConvertor
extends AbstractLogEnabled
implements Document2ImagesConvertor

PDF to PNG convertor which makes use of the pdfbox library. Based on pdfbox's PDFImageWriter utility class, adding the possibility to specify the file name pattern.

Field Summary

Fields inherited from interface org.ametys.plugins.flipbook.Document2ImagesConvertor

ROLE

Constructor Summary

Constructors

Constructor and Description
PdfboxConvertor()

Method Summary

Modifier and Type	Method and Description
private static BufferedImage	_resizeImage(BufferedImage src, int maxHeight, int maxWidth)
void	convert(File pdfFile, File folder) Convert the given document file to PNG images, one image per page.
List<String>	getSupportedMimeTypes() Get the list of mime types the convertor can convert
protected List<String>	writeImages(PDDocument document, File folder, String imageFormat, String outputPrefix) Converts a given page range of a PDF document to bitmap images.
protected List<String>	writeImages(PDDocument document, File folder, String imageFormat, String outputPrefix, int resolution) Converts a given page range of a PDF document to bitmap images.
protected List<String>	writeImages(PDDocument document, File folder, String imageFormat, String password, int startPage, int endPage, String outputPrefix, int imageType, int resolution, float quality) Converts a given page range of a PDF document to bitmap images.
protected void	writePreview(File folder, String outputPrefix) Generate the preview image

Methods inherited from class org.apache.avalon.framework.logger.AbstractLogEnabled

enableLogging, getLogger, setupLogger, setupLogger, setupLogger

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PdfboxConvertor

public PdfboxConvertor()

Method Detail

convert

public void convert(File pdfFile,
                    File folder)
             throws IOException,
                    FlipbookException

Description copied from interface: Document2ImagesConvertor

Convert the given document file to PNG images, one image per page.

Specified by:

convert in interface Document2ImagesConvertor

Parameters:

pdfFile - the document file to convert.

folder - the destination folder.

Throws:

IOException - if an I/O error occurs.

FlipbookException - if a document error occurs.

writeImages

protected List<String> writeImages(PDDocument document,
                                   File folder,
                                   String imageFormat,
                                   String outputPrefix)
                            throws IOException,
                                   FlipbookException

Converts a given page range of a PDF document to bitmap images.

Parameters:

document - the PDF document

folder - the folder where to write

imageFormat - the target format (ex. "png")

outputPrefix - used to construct the filename for the individual images

Returns:

true if the images were produced, false if there was an error

Throws:

IOException - if an I/O error occurs

FlipbookException - if an error occurs when manipulating the flipbook

writeImages

protected List<String> writeImages(PDDocument document,
                                   File folder,
                                   String imageFormat,
                                   String outputPrefix,
                                   int resolution)
                            throws IOException,
                                   FlipbookException

Converts a given page range of a PDF document to bitmap images.

Parameters:

document - the PDF document

folder - the folder where to write

imageFormat - the target format (ex. "png")

outputPrefix - used to construct the filename for the individual images

resolution - the resolution in dpi (dots per inch)

Returns:

true if the images were produced, false if there was an error

Throws:

IOException - if an I/O error occurs

FlipbookException - if an error occurs when manipulating the flipbook

writeImages

protected List<String> writeImages(PDDocument document,
                                   File folder,
                                   String imageFormat,
                                   String password,
                                   int startPage,
                                   int endPage,
                                   String outputPrefix,
                                   int imageType,
                                   int resolution,
                                   float quality)
                            throws IOException,
                                   FlipbookException

Converts a given page range of a PDF document to bitmap images.

Parameters:

document - the PDF document

folder - the folder where to write

imageFormat - the target format (ex. "png")

password - the password (needed if the PDF is encrypted)

startPage - the start page (1 is the first page)

endPage - the end page (set to Integer.MAX_VALUE for all pages)

outputPrefix - used to construct the filename for the individual images

imageType - the image type (see BufferedImage.TYPE_*)

resolution - the resolution in dpi (dots per inch)

quality - the image compression quality (0 < quality < 1.0f).

Returns:

true if the images were produced, false if there was an error

Throws:

IOException - if an I/O error occurs

FlipbookException - if an error occurs when manipulating the flipbook

getSupportedMimeTypes

public List<String> getSupportedMimeTypes()

Description copied from interface: Document2ImagesConvertor

Get the list of mime types the convertor can convert

Specified by:

getSupportedMimeTypes in interface Document2ImagesConvertor

Returns:

The list of supported mime-types

writePreview

protected void writePreview(File folder,
                            String outputPrefix)
                     throws IOException

Generate the preview image

Parameters:

folder - The folder with the PDF images

outputPrefix - The prefix of PDF images

Throws:

IOException - if an I/O error occurs

_resizeImage

private static BufferedImage _resizeImage(BufferedImage src,
                                          int maxHeight,
                                          int maxWidth)