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Associating form fields with corresponding blocks. Since the form field names will bemodified when converting multiple fields with the same name (e.g. radio buttons) it isdifficult to reliably identify the block which corresponds to a particular form field. Thisis especially important when using an FDF or XFDF file as the source for filling blockssuch that the final result resembles the filled form.In order to solve this problem the AcroFormConversion plugin will record detailsabout the original form field as custom properties when creating the correspondingblock. Table 10.3 details the custom properties which can be used to reliably identify theblocks; all properties have type string.Table 10.3 Custom properties for identifying the original form field corresponding to the blockcustom propertyPDFlib:field:namePDFlib:field:pagenumberPDFlib:field:typePDFlib:field:valuemeaningFully qualified name of the form fieldPage number (as a string) in the original document where the form field was locatedType of the form field; one of pushbutton, checkbox, radiobutton, listbox, combobox,textfield, signature(Only for type=checkbox) Export value of the form fieldBinding blocks to the corresponding form fields. In order to keep PDF form fields andthe generated PDFlib blocks synchronized, the generated blocks can be bound to the correspondingform fields. This means that the block tool will internally maintain the relationshipof form fields and blocks. When the conversion process is activated again,bound blocks will be updated to reflect the attributes of the corresponding PDF formfields. Bound blocks are useful to avoid duplicate work: when a form is updated for interactiveuse, the corresponding blocks can automatically be updated, too.If you do not want to keep the converted form fields after blocks have been generatedyou can choose the option Delete converted Form Fields in the PDFlib Blocks, ConvertForm Fields, Conversion Options... dialog. This option will permanently remove the formfields after the conversion process. Any actions (e.g., JavaScript) associated with the affectedfields will also be removed from the document.Batch conversion. If you have many PDF documents with form fields that you want toconvert to PDFlib blocks you can automatically process an arbitrary number of documentsusing the batch conversion feature. The batch processing dialog is available viaPDFlib Blocks, Convert Form Fields, Batch conversion...:> The input files can be selected individually; alternatively the full contents of a foldercan be processed.> The output files can be written to the same folder where the input files are, or to adifferent folder. The output files can receive a prefix to their name in order to distinguishthem from the input files.> When processing a large number of documents it is recommended to specify a logfile. After the conversion it will contain a full list of processed files as well as detailsregarding the result of each conversion along with possible error messages.During the conversion process the converted PDF documents will be visible in Acrobat,but you cannot use any of Acrobat’s menu functions or tools.236 Chapter 10: Variable Data and Blocks
10.4 Filling PDFlib Blocks with PPSCoordinate systems. The coordinates describing a block reference the PDF default coordinatesystem. When the page containing the block is placed on the output page, severalpositioning and scaling options may be supplied to PDF_fit_pdi_page( ). These parametersare taken into account when the block is being processed. This makes itpossible to place a template page on the output page multiply, every time filling itsblocks with data. For example, a business card template may be placed four times on animposition sheet. The block functions will take care of the coordinate system transformations,and correctly place the text for all blocks in all invocations of the page. Theonly requirement is that the client must place the page and then process all blocks onthe placed page. Then the page can be placed again at a different location on the outputpage, followed by more block processing operations referring to the new position, andso on.Note The Block plugin will display the block coordinates differently from what is stored in the PDFfile. The plugin uses Acrobat’s convention which has the coordinate origin in the upper left cornerof the page, while the internal coordinates (those stored in the block) use PDF’s conventionof having the origin at the lower left corner of the page.Simple example: adding variable text to a template. Adding dynamic text to a PDFtemplate is a very common task. The following code fragment will open a page in an inputPDF document (the template), place it on the output page, and fill some variabletext into a text block called firstname:doc = p.open_pdi_document(filename, "");if (doc == -1)throw new Exception("Error: " + p.get_errmsg());page = p.open_pdi_page(doc, pageno, "");if (page == -1)throw new Exception("Error: " + p.get_errmsg());p.begin_page_ext(width, height, "");p.fit_pdi_page(page, 0.0, 0.0, "");p.fill_textblock(page, "firstname", "Serge", "encoding=winansi");p.close_pdi_page(page);p.end_page_ext("");p.close_pdi_document(doc);Cookbook A full code sample can be found in the Cookbook topic blocks/starter_block.Overriding block properties. In certain situations the programmer would like to useonly some of the properties provided in a block definition, but override other propertieswith custom values. This can be useful in various situations:> The scaling factor for an image or PDF page will be calculated instead of taken fromthe block definition.> Change the block coordinates programmatically, for example when generating aninvoice with a variable number of data items.> Individual spot color names could be supplied in order to match the requirements ofindividual customers in a print shop application.10.4 Filling PDFlib Blocks with PPS 237
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PDFlib GmbH München, Germanywww.pd
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Contents0 Applying the PDFlib Licen
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5.6.1 Standard CJK Fonts 1165.6.2 C
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10.2.2 Block Properties 22710.2.3 W
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0 Applying the PDFlib License KeyAl
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Licensing options. Different licens
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PDFlib TET (Text Extraction Toolkit
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PDFlib can be integrated directly i
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Improved handling of Chinese, Japan
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1.4 Features in PDFlib/PDFlib+PDI/P
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1.5 Availability of Features in dif
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24 Chapter 1: Introduction
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2.2 COM Binding(This section is onl
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necessary. After fatal exceptions t
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2.4 C++ BindingIn addition to the p
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PDFlib servlets and Java applicatio
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2.6 .NET Binding(This section is on
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More than one way of String handlin
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PHP on Windows will find files with
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2.10 REALbasic Binding 1(This secti
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Now you can compile your program us
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2.13 Tcl BindingInstalling the PDFl
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Error policies. When PDFlib detects
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plied), but only the corresponding
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name exactly as supplied and try to
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3.1.4 Generating PDF Documents in M
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3.2 Page Descriptions3.2.1 Coordina
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In order to facilitate the use of t
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Merely constructing a path doesn’
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3.3 Working with ColorNote The PDFl
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where is the identifier of the col
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Rendering Intents. Although PDFlib
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p.set_parameter("errorpolicy", "ret
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with a thin black border. Initially
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}p.begin_page_ext(pagewidth, pagehe
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Table 3.5 Parameters for the JavaSc
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4.2 Important Unicode ConceptsChara
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4.3 Strings in PDFlib4.3.1 String T
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EBCDIC UTF-8 BOM). If the usehypert
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values 0x7B and 0x7D must be preced
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Table 4.4 Availability of glyphs fo
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exclam 33 0x0021...If no Unicode va
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Table 4.5 Predefined CMaps for Japa
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4.6 Addressing Characters and Glyph
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Table 4.8 Control characters and th
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glyphcheck=replace: silent approach
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94 Chapter 4: Unicode and Legacy En
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5.1.2 Font EncodingsAll fonts for t
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5.2 Font Format Details5.2.1 PostSc
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the contents of the characters in a
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Path resource category (again, the
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When working with host fonts it is
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Note The Leopard builds of PDFlib (
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put by default. For encodings which
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5.4.2 Glyph ID Addressing for TrueT
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5.5 Font Metrics and Text Variation
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Temporarily disabling kerning may b
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5.6 Chinese, Japanese, and Korean F
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CJK host font names on Windows can
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120 Chapter 5: Font Handling
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tion) if the user coordinate system
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color: black and white, grayscale,
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PDFlib supports three kinds of tran
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BMP> PNG> JPEG> TIFF> GIFFor images
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6.2 Importing PDF Pages with PDI (P
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Alternatively, you can use the pdiu
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20Kraxitext on top right of the box
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can be used. In Figure 7.5h the tex
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7.1.5 Placing a StampCookbook A ful
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7.2 Multi-Line TextflowsIn addition
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piece of normal text. Font, font si
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leftindent = 15parindent = 20leadin
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hortabmethod rulertabalignment left
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leftindent = &indentparindent = - &
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To fold the famous rocket looper pr
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Our paper planes are the ideal way
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Our paper planesare the ideal way o
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p.fit_textflow(textflow, left_x, le
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7.3 Placing Images and Imported PDF
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Fig. 7.28 Fitting an image into a b
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Fitting an oriented image into a bo
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7.4 Table FormattingThe table forma
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tbl = p.add_table_cell(tbl, 1, 1, "
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cell border as the Material text. T
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those width values will implicitly
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column defining a column width of 1
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The table in Figure 7.42 is spread
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Splitting a row. If the last body d
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To increase the box height to match
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Fig. 7.48 Using the image matchbox
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size of a page. Determining the pag
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8.3 Composite Data Structures and I
Page 186 and 187: Table 8.2 pCOS path prefixesprefixl
Page 188 and 189: Table 8.3 Universal pseudo objectso
Page 190 and 191: Table 8.4 Pseudo objects for PDF ob
Page 192 and 193: Table 8.5 Pseudo objects for resour
Page 194 and 195: 194 Chapter 8: The pCOS Interface
Page 196 and 197: Table 9.2 PDFlib features for PDF 1
Page 198 and 199: to disable any access restrictions.
Page 200 and 201: Table 9.4 Access restriction keywor
Page 202 and 203: 9.4 PDF/X for Print Production9.4.1
Page 204 and 205: Table 9.6 Operations which must be
Page 206 and 207: work as a full PDF/X validator or t
Page 208 and 209: 9.5.2 Generating PDF/A-conforming O
Page 210 and 211: Table 9.11 Additional requirements
Page 212 and 213: This statement will retrieve a stri
Page 214 and 215: Table 9.16 Predefined XMP schemas f
Page 216 and 217: 9.6 Tagged PDFTagged PDF is a certa
Page 218 and 219: quired, but will enhance the qualit
Page 220 and 221: * 1 create top part of left column
Page 222 and 223: optlist = "Title=Insert parent=" +
Page 224 and 225: exported to other formats. If the A
Page 226 and 227: Click Add... and select the PDFlib
Page 228 and 229: scaling factor or rotation. For eac
Page 230 and 231: 10.3 Using the PDFlib Block Plugin
Page 232 and 233: next step other objects which are p
Page 234 and 235: Use Ctrl-V (on Windows) or Cmd-V (o
Page 238 and 239: Property overrides can be achieved
Page 240 and 241: 10.5 Standard Properties for Automa
Page 242 and 243: 10.5.2 Text PropertiesText-related
Page 244 and 245: Table 10.6 Textflow block propertie
Page 246 and 247: Table 10.6 Textflow block propertie
Page 248 and 249: 10.6 Querying Block Names and Prope
Page 250 and 251: 10.7 PDFlib Block SpecificationThe
Page 252 and 253: Example. The following fragment sho
Page 254 and 255: 254 Chapter 10: Variable Data and B
Page 256 and 257: 256
Page 258 and 259: Ffeatures of PDFlib 20fill 57font m
Page 260: TrimBox 57TrueType fonts 95TTC (Tru
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