PDFlib 8 Windows COM/.NET Tutorial

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Blocks can carry a number of standard properties depending on their type. Properties can be created and modified with the Block Plugin (see Section 11.3.2, »Editing Block Properties«, page 286). A full list of standard Block properties can be found in Section 11.6, »Block Properties«, page 300. For example, a text Block can specify the font and size of the text, an image or PDF Block can specify the scaling factor or rotation PPS offers dedicated functions for processing the Block types, e.g. fill_textblock( ). These functions search a placed PDF page for a Block by its name, analyze its properties, and place clientsupplied data (single- or multi-line text, raster image, or PDF page) on the new page according to the specified Block properties. The programmer can override Block properties by specifying the corresponding options to the Block filling functions. Properties for default contents. Special Block properties can be defined which hold the default contents of a Block, i.e. the text, image or PDF contents which will be placed in the Block if no variable data has been supplied to the Block filling functions, or in situations where the Block contents are currently constant, but may change in the next print run. Default properties are also used by the Preview feature of the Block Plugin (see Section 11.4, »Previewing Blocks in Acrobat«, page 292). Custom Block properties. Standard Block properties make it possible to quickly implement variable data processing applications, but they are restricted to the set of properties which are internally known to PPS and can automatically be processed. In order to provide more flexibility, the designer can also assign custom properties to a Block. These can be used to extend the Block concept in order to match the requirements of more advanced variable data processing applications. There are no rules for custom properties since PPS will not process custom properties in any way, except making them available to the client. The client code can retrieve the value of custom properties and process it as appropriate. Based on a custom property of a Block the application may make layout-related or data-gathering decisions. For example, a custom property for a scientific application could specify the number of digits for numerical output, or a database field name may be defined as a custom Block property for retrieving the data corresponding to this Block. 11.2.3 Why not use PDF Form Fields? Experienced Acrobat users may ask why we implemented a new Block concept instead of relying on the existing form field mechanism available in PDF. The primary distinction is that PDF form fields are optimized for interactive filling, while PDFlib Blocks are targeted at automated filling. Applications which need both interactive and automated filling can combine PDF forms and PDFlib Blocks with the form field conversion plugin (see Section 11.3.4, »Converting PDF Form Fields to PDFlib Blocks«, page 288). Although there are many parallels between both concepts, PDFlib Blocks offer several advantages over PDF form fields as detailed in Table 11.1. 280 Chapter 11: PPS and the PDFlib Block Plugin (Edition for COM, .NET, and REALbasic)
Table 11.1 Comparison of PDF form fields and PDFlib Blocks feature PDF form fields PDFlib Blocks design objective for interactive use for automated filling typographic features (beyond choice of font and font size) – kerning, word and character spacing, underline/ overline/strikeout OpenType layout features – dozens of OpenType layout features, e.g. ligatures, swash characters, oldstyle figures complex script support limited shaping and bidirectional formatting, e.g. for Arabic and Devanagari font control font embedding font embedding and subsetting, encoding text formatting controls left-, center-, right-aligned left-, center-, right-aligned, justified; various formatting algorithms and controls; inline options can be used to control the appearance of text change font or other text attributes within text merged result is integral part of PDF page description – yes – yes users can edit merged field contents yes no extensible set of properties – yes (custom Block properties) use image files for filling – BMP, CCITT, GIF, PNG, JPEG, JBIG2, JPEG 2000, TIFF color support RGB grayscale, RGB, CMYK, Lab, spot color (HKS and Pantone spot colors integrated in the Block Plugin) PDF/X and PDF/A PDF/X: no PDF/A: restricted yes (both Block container and merged results) graphics and text properties can be overridden upon filling – yes transparent contents – yes Text Blocks can be linked – yes 11.2 Overview of the Block Concept 281
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ABC PDFlib, PDFlib+PDI, PPS A libra
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Contents 0 Applying the PDFlib Lice
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5.2 Unicode Characters and Glyphs 1
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8.4 Matchboxes 243 8.4.1 Decorating
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0 Applying the PDFlib License Key R
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Licensing options. Different licens
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1 Introduction 1.1 Roadmap to Docum
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1.2 PDFlib Programming What is PDFl
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1.3 What’s new in PDFlib/PDFlib+P
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1.3.3 PDFlib Block Plugin and PDFli
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1.4 Features in PDFlib Table 1.1 li
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Table 1.1 Feature list for PDFlib t
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1.6 Additional Features in PPS Tabl
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2 PDFlib Language Bindings Note It
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2.3 COM Binding COM (Component Obje
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Supply your license key at runtime
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eference calls for an int type argu
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2.5 C++ Binding (This section is on
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2.7 .NET Binding Note Detailed info
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2.8 Objective-C Binding (This secti
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2.10 PHP Binding (This section is o
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2.12 REALbasic Binding Installing t
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2.14 Ruby Binding (This section is
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3 Creating PDF Documents 3.1 Genera
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Enable warning logging in the devel
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Table 3.1 Resource categories suppo
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myencoding=myencoding.enc . ICCProf
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2 GB file size limit: The PDF/A-1 s
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Visualizing coordinates. In order t
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Table 3.2 Minimum and maximum page
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Instead of creating a path object w
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Proxy for the target page. PDFlib c
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3.3.2 Protecting Documents with PDF
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3.4 Web-Optimized (Linearized) PDF
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Cookbook A full code sample can be
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HKS® colors. The HKS color system
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Use the file name determined in the
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3.6 Interactive Elements Cookbook C
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3.7 Georeferenced PDF Cookbook A fu
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Examples for projected coordinate s
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4 Unicode and Legacy Encodings This
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4.2 Single-Byte (8-Bit) Encodings 8
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exclam 33 0x0021 ... If no Unicode
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p.set_parameter("SearchPath", "/pat
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Objective-C > Python > REALbasic >
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If an escape sequence cannot be res
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Character references are not substi
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5 Font Handling 5.1 Font Formats 5.
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SING fonts usually contain only a s
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5.2 Unicode Characters and Glyphs 5
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complex script shaping and OpenType
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5.3.2 Converting Unicode Values to
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5.4 Loading Fonts 5.4.1 Selecting a
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Glyphid encoding. PDFlib supports e
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If you know the character code you
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TrueType and OpenType fonts. The fo
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.tte .ttf .otf .gai .afm .pfm .ttc
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The keywords are case-insensitive.
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Caveats. Note the following when wo
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Add Gaiji characters to a font. Thi
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Legal aspects of font embedding. It
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5.6 Querying Font Information info_
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Query the font-specific name of a g
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6 Text Output 6.1 Text Output Metho
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descender = p.info_font(font, "desc
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6.3 OpenType Layout Features Cookbo
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Table 6.1 Supported OpenType featur
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will prevent them from being replac
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6.4 Complex Script Output Cookbook
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Requirements for shaping. A font fo
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6.4.3 Complex Script Shaping The sh
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You can use the writingdirx keyword
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6.5 Chinese, Japanese, and Korean T
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The keepnative option is false by d
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The vert feature (vertical writing)
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7 Importing Images and PDF Pages PD
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String optlist13 = "OPI-1.3 { ALDIm
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GIF images. PDFlib supports all GIF
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channels which are identified by na
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In order to colorize an image with
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You can not re-use individual eleme
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Encrypted PDF documents without the
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Positioning an image in the box. We
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Fig. 7.4 The rotate option Fig. 7.5
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Fig. 7.8 Adjusting the page size. L
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8 Text and Table Formatting 8.1 Pla
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Generated output Option list for fi
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To illustrate the size of the match
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Long Distance Glider with sensation
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8.2 Multi-Line Textflows In additio
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normal text. Font, font size, and e
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leftindent = 15 parindent = 20 lead
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Explicitly setting options. Note th
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leftindent = &indent parindent = -
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To fold the famous rocket looper pr
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8.2.8 Controlling the standard Line
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Our paper planes are the ideal way
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French text. As a result, the guill
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String imageoptlist = "scale=2"; p.
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8.3 Table Formatting The table form
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Page 213 and 214: if (tbl == -1) throw new Exception(
Page 215 and 216: esult = p.fit_table(tbl, llx, lly,
Page 217 and 218: Figure 8.38 shows how the Textflow
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Page 221 and 222: To increase the box height to match
Page 223 and 224: Fig. 8.43 Using the image matchbox
Page 225 and 226: 9 The pCOS Interface The pCOS (PDFl
Page 227 and 228: 10 PDF Versions and Standards 10.1
Page 229 and 230: Table 10.1 PDFlib features which re
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Page 235 and 236: 10.3.3 Output Intent and Standard O
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Page 239 and 240: 10.4.2 Generating PDF/A-conforming
Page 241 and 242: Additional requirements and restric
Page 243 and 244: While PDFlib can correct certain it
Page 245 and 246: Table 10.13 Predefined XMP schemas
Page 247 and 248: tree is created in multiple travers
Page 249 and 250: All parts of a Textflow (all calls
Page 251 and 252: * 1 create header */ p.set_text_pos
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Page 255 and 256: 11 PPS and the PDFlib Block Plugin
Page 257: 11.2 Overview of the Block Concept
Page 261 and 262: Fig. 11.1 Visualization of Blocks I
Page 263 and 264: Fig. 11.3 Grid preferences in Acrob
Page 265 and 266: Note Do not confuse the default val
Page 267 and 268: PDFlib Blocks choose PDFlib Blocks,
Page 269 and 270: If you do not want to keep the conv
Page 271 and 272: Fig. 11.4 Preview PDF for the conta
Page 273 and 274: PDF/X-3:2002, PDF/X-3:2003 PDF/X-4,
Page 275 and 276: Placing the imported page on top of
Page 277 and 278: The third method, i.e. filling a PD
Page 279 and 280: 11.6.2 Rectangle Properties Rectang
Page 281 and 282: Table 11.7 Text appearance properti
Page 283 and 284: 11.6.5 Text Formatting Properties T
Page 285 and 286: Table 11.9 Text formatting properti
Page 287 and 288: Table 11.11 Fitting properties for
Page 289 and 290: 11.6.7 Properties for default Conte
Page 291 and 292: Querying custom properties. Custom
Page 293 and 294: Data types for Block properties. Pr
Page 295 and 296: endobj /Name /job_title /Subtype /T
Page 297 and 298: A Revision History Date Changes Jun
Page 299 and 300: Index A Acrobat plugin for creating
Page 301 and 302: N name strings 108 in non-Unicode c
Page 304: ABC PDFlib GmbH Franziska-Bilek-Weg
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