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size of a page. Determining the page size is much easier with the width and height keysof the pages pseudo object. The following code retrieves the width and height of page 3(note that indices for the pages pseudo object start at 0):pagenum = 2width = p.pcos_get_number(doc, "pages[" + pagenum + "]/width");height = p.pcos_get_number(doc, "pages[" + pagenum + "]/height");Listing all fonts in a document. The following sequence creates a list of all fonts in adocument along with their embedding status:fontcount = p.pcos_get_number(doc, "length:fonts");for (i=0; i < fontcount; i++){fontname = p.pcos_get_string(doc, "fonts[" + i + "]/name");embedded = p.pcos_get_number(doc, "fonts[" + i + "]/embedded");}Encryption status. You can query the pcosmode pseudo object to determine the pCOSmode for the document:if (p.pcos_get_number(doc, "pcosmode") == 2){/* full pCOS mode */}XMP meta data. A stream containing XMP meta data can be retrieved with the followingcode sequence:objtype = p.pcos_get_number(doc, "type:/Root/Metadata");if (objtype.equals("stream")){/* XMP meta data found */metadata = p.pcos_get_stream(doc, "", "/Root/Metadata");}182 Chapter 8: The pCOS Interface
8.2 Handling Basic PDF Data TypespCOS offers the three functions PDF_pcos_get_number( ), PDF_pcos_get_string( ), and PDF_pcos_get_stream( ). These can be used to retrieve all basic data types which may appearin PDF documents.Numbers. Objects of type integer and real can be queried with PDF_pcos_get_number( ).pCOS doesn’t make any distinction between integer and floating point numbers.Names and strings. Objects of type name and string can be queried with PDF_pcos_get_string( ). Name objects in PDF may contain non-ASCII characters and the # syntax (decoration)to include certain special characters. pCOS deals with PDF names as follows:> Name objects will be undecorated (i.e. the # syntax will be resolved) before they arereturned.> Name objects will be returned as Unicode strings in most language bindings. However,in the C and C++ language bindings they will be returned as UTF-8 with BOM.Since the majority of strings in PDF are text strings PDF_pcos_get_string( ) will treat themas such. However, in rare situations strings in PDF are used to carry binary information.In this case strings should be retrieved with the function PDF_pcos_get_stream( ) whichpreserves binary strings and does not modify the contents in any way.Booleans. Objects of type boolean can be queried with PDF_pcos_get_number( ) and willbe returned as 1 (true) or 0 (false). PDF_pcos_get_string( ) can also be used to query booleanobjects; in this case they will be returned as one of the strings true and false.Streams. Objects of type stream can be queried with PDF_pcos_get_stream( ). Dependingon the pCOS data type (stream or fstream) the contents will be compressed or uncompressed.Using the keepfilter option of PDF_pcos_get_stream( ) the client can retrievecompressed data even for type stream.Stream data in PDF may be preprocessed with one or more filters. The list of filterspresent at the stream can be queried from the stream dictionary; for images this informationis much easier accessible in the image’s filterinfo dictionary. If a stream’s filterchain contains only supported filters its type will be stream. When retrieving the contentsof a stream object, PDF_pcos_get_stream( ) will remove all filters and return the resultingunfiltered data.Note pCOS does not support the following stream filters: CCITTFax, JBIG2, and JPX.If there is at least one unsupported filter in a stream’s filter chain, the object type will bereported as fstream (filtered stream). When retrieving the contents of an fstream object,PDF_pcos_get_stream( ) will remove the supported filters at the beginning of a filterchain, but will keep the remaining unsupported filters and return the stream data withthe remaining unsupported filters still applied. The list of applied filters can be queriedfrom the stream dictionary, and the filtered stream contents can be retrieved with PDF_pcos_get_stream( ). Note that the names of supported filters will not be removed whenquerying the names of the stream’s filters, so the client should ignore the names of supportedfilters.8.2 Handling Basic PDF Data Types 183
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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
Page 132 and 133: Alternatively, you can use the pdiu
Page 134 and 135: 20Kraxitext on top right of the box
Page 136 and 137: can be used. In Figure 7.5h the tex
Page 138 and 139: 7.1.5 Placing a StampCookbook A ful
Page 140 and 141: 7.2 Multi-Line TextflowsIn addition
Page 142 and 143: piece of normal text. Font, font si
Page 144 and 145: leftindent = 15parindent = 20leadin
Page 146 and 147: hortabmethod rulertabalignment left
Page 148 and 149: leftindent = &indentparindent = - &
Page 150 and 151: To fold the famous rocket looper pr
Page 152 and 153: Our paper planes are the ideal way
Page 154 and 155: Our paper planesare the ideal way o
Page 156 and 157: p.fit_textflow(textflow, left_x, le
Page 158 and 159: 7.3 Placing Images and Imported PDF
Page 160 and 161: Fig. 7.28 Fitting an image into a b
Page 162 and 163: Fitting an oriented image into a bo
Page 164 and 165: 7.4 Table FormattingThe table forma
Page 166 and 167: tbl = p.add_table_cell(tbl, 1, 1, "
Page 168 and 169: cell border as the Material text. T
Page 170 and 171: those width values will implicitly
Page 172 and 173: column defining a column width of 1
Page 174 and 175: The table in Figure 7.42 is spread
Page 176 and 177: Splitting a row. If the last body d
Page 178 and 179: To increase the box height to match
Page 180 and 181: Fig. 7.48 Using the image matchbox
Page 184 and 185: 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
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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
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next step other objects which are p
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Use Ctrl-V (on Windows) or Cmd-V (o
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Associating form fields with corres
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Property overrides can be achieved
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10.5 Standard Properties for Automa
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10.5.2 Text PropertiesText-related
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Table 10.6 Textflow block propertie
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Table 10.6 Textflow block propertie
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10.6 Querying Block Names and Prope
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10.7 PDFlib Block SpecificationThe
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Example. The following fragment sho
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254 Chapter 10: Variable Data and B
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256
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Ffeatures of PDFlib 20fill 57font m
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TrimBox 57TrueType fonts 95TTC (Tru
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