PDFlib 8 Windows COM/.NET Tutorial

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11.6.4 Text Preparation Properties Text preparation properties specify preprocessing steps for Textline and Textflow Blocks. Table 11.8 lists text preparation properties for Textline and Textflow Blocks. Table 11.8 Text preparation properties for Textline and Textflow Blocks keyword charref escapesequence features language script shaping possible values and explanation (Boolean) If true, enable substitution of numeric and character entity references and glyph name references. Default: the global charref parameter (Boolean) If true, enable substitution of escape sequences in strings. Default: the global escapesequence parameter (List of keywords) Specifies which typographic features of an OpenType font will be applied to the text, subject to the script and language options. Keywords for features which are not present in the font will silently be ignored. The following keywords can be supplied: _none Apply none of the features in the font. As an exception, the vert feature must explicitly be disabled with the novert keyword. Enable a feature by supplying its four-character OpenType tag name. Some common feature names are liga, ital, tnum, smcp, swsh, zero. The full list with the names and descriptions of all supported features can be found in Section 6.3.1, »Supported OpenType Layout Features«, page 158. no The prefix no in front of a feature name (e.g. noliga) disables this feature. Default: _none for horizontal writing mode. In vertical writing mode vert will automatically be applied. The readfeatures option in load_font( ) is required for OpenType feature support. (Keyword; only relevant if script is supplied) The text will be processed according to the specified language, which is relevant for the features and shaping options. A full list of keywords can be found in Section 6.4.2, »Script and Language«, page 166, e.g. ARA (Arabic), JAN (Japanese), HIN (Hindi). Default: _none (undefined language) (Keyword; required if shaping=true) The text will be processed according to the specified script, which is relevant for the features, shaping, and advancedlinebreaking options. The most common keywords for scripts are the following: _none (undefined script), latn, grek, cyrl, armn, hebr, arab, deva, beng, guru, gujr, orya, taml, thai, laoo, tibt, hang, kana, han. The keyword _auto selects the script to which the majority of characters in the text belong, where _latn and _none are ignored. A full list of keywords can be found in Section 6.4.2, »Script and Language«, page 166. Default: _none (Boolean) If true, the text will be formatted (shaped) according to the script and language options. The script option must have a value different from _none and the required shaping tables must be available in the font. Default: false 304 Chapter 11: PPS and the PDFlib Block Plugin (Edition for COM, .NET, and REALbasic)
11.6.5 Text Formatting Properties Table 11.9 lists properties which can only be used for Textflow Blocks, with the exception of the stamp property which can also be used for Textline Blocks. They will be used to construct the initial option list for processing the Textflow (corresponding to the optlist parameter of create_textflow( )). Inline option lists for Textflows can not be specified with the plugin, but they can be supplied on the server as part of the text contents when filling the Block with fill_textblock( ), or in the Block’s defaulttext property. Table 11.9 Text formatting properties (mostly for Textflow Blocks) keyword adjustmethod advancedlinebreak alignment fixedleading avoidemptybegin hortabmethod hortabsize possible values and explanation (Keyword) Method used to adjust a line when a text portion doesn’t fit into a line after compressing or expanding the distance between words subject to the limits specified by the minspacing and maxspacing options (default: auto): auto The following methods are applied in order: shrink, spread, nofit, split. clip nofit shrink split spread Same as nofit, except that the long part at the right edge of the fit box (taking into account the rightindent option) will be clipped. The last word will be moved to the next line provided the remaining (short) line will not be shorter than the percentage specified in the nofitlimit option. Even justified paragraphs may look slightly ragged. If a word doesn’t fit in the line the text will be compressed subject to shrinklimit. If it still doesn’t fit the nofit method will be applied. The last word will not be moved to the next line, but will forcefully be hyphenated. For text fonts a hyphen character will be inserted, but not for symbol fonts. The last word will be moved to the next line and the remaining (short) line will be justified by increasing the distance between characters in a word, subject to spreadlimit. If justification still cannot be achieved the nofit method will be applied. (Boolean) Enable the advanced line breaking algorithm which is required for complex scripts. This is required for linebreaking in scripts which do not use space characters for designating word boundaries, e.g. Thai. The options locale and script will be honored. Default: false (Keyword) Specifies formatting for lines in a paragraph. Default: left. left left-aligned, starting at leftindent center centered between leftindent and rightindent right right-aligned, ending at rightindent justify left- and right-aligned (Boolean) If true, empty lines at the beginning of a fitbox will be deleted. Default: false (Boolean) If true, the first leading value found in each line will be used. Otherwise the maximum of all leading values in the line will be used. Default: false (Keyword) Treatment of horizontal tabs in the text. If the calculated position is to the left of the current text position, the tab will be ignored (default: relative): relative The position will be advanced by the amount specified in hortabsize. typewriter The position will be advanced to the next multiple of hortabsize. ruler The position will be advanced to the n-th tab value in the ruler option, where n is the number of tabs found in the line so far. If n is larger than the number of tab positions the relative method will be applied. (Float or percentage) Width of a horizontal tab 1 . The interpretation depends on the hortabmethod option. Default: 7.5% 11.6 Block Properties 305
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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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tbl = p.add_table_cell(tbl, 1, 1, "
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In addition, we want the baseline o
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8.3.3 Table and Column Widths When
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if (tbl == -1) throw new Exception(
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esult = p.fit_table(tbl, llx, lly,
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Figure 8.38 shows how the Textflow
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Continue the table in the next fitb
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To increase the box height to match
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Fig. 8.43 Using the image matchbox
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9 The pCOS Interface The pCOS (PDFl
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10 PDF Versions and Standards 10.1
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Table 10.1 PDFlib features which re
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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 and 258: 11.2 Overview of the Block Concept
Page 259 and 260: Table 11.1 Comparison of PDF form f
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
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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
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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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