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pango-Miscellaneous-Utilities.html
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Miscellaneous Utilities: Pango Reference Manual</title> <meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> <link rel="home" href="index.html" title="Pango Reference Manual"> <link rel="up" href="lowlevel.html" title="Low Level Functionality"> <link rel="prev" href="PangoFcDecoder.html" title="PangoFcDecoder"> <link rel="next" href="pango-Version-Checking.html" title="Version Checking"> <meta name="generator" content="GTK-Doc V1.32 (XML mode)"> <link rel="stylesheet" href="style.css" type="text/css"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle"> <td width="100%" align="left" class="shortcuts"> <a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span> <a href="#pango-Miscellaneous-Utilities.description" class="shortcut">Description</a></span> </td> <td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td> <td><a accesskey="u" href="lowlevel.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> <td><a accesskey="p" href="PangoFcDecoder.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> <td><a accesskey="n" href="pango-Version-Checking.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> </tr></table> <div class="refentry"> <a name="pango-Miscellaneous-Utilities"></a><div class="titlepage"></div> <div class="refnamediv"><table width="100%"><tr> <td valign="top"> <h2><span class="refentrytitle"><a name="pango-Miscellaneous-Utilities.top_of_page"></a>Miscellaneous Utilities</span></h2> <p>Miscellaneous Utilities — Various convenience and utility functions</p> </td> <td class="gallery_image" valign="top" align="right"></td> </tr></table></div> <div class="refsect1"> <a name="pango-Miscellaneous-Utilities.functions"></a><h2>Functions</h2> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="functions_proto_type"> <col class="functions_proto_name"> </colgroup> <tbody> <tr> <td class="function_type"> <span class="returnvalue">char</span> ** </td> <td class="function_name"> <a class="link" href="pango-Miscellaneous-Utilities.html#pango-split-file-list" title="pango_split_file_list ()">pango_split_file_list</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <span class="returnvalue">char</span> * </td> <td class="function_name"> <a class="link" href="pango-Miscellaneous-Utilities.html#pango-trim-string" title="pango_trim_string ()">pango_trim_string</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a href="../glib/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> </td> <td class="function_name"> <a class="link" href="pango-Miscellaneous-Utilities.html#pango-read-line" title="pango_read_line ()">pango_read_line</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> </td> <td class="function_name"> <a class="link" href="pango-Miscellaneous-Utilities.html#pango-skip-space" title="pango_skip_space ()">pango_skip_space</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> </td> <td class="function_name"> <a class="link" href="pango-Miscellaneous-Utilities.html#pango-scan-word" title="pango_scan_word ()">pango_scan_word</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> </td> <td class="function_name"> <a class="link" href="pango-Miscellaneous-Utilities.html#pango-scan-string" title="pango_scan_string ()">pango_scan_string</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> </td> <td class="function_name"> <a class="link" href="pango-Miscellaneous-Utilities.html#pango-scan-int" title="pango_scan_int ()">pango_scan_int</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> </td> <td class="function_name"> <a class="link" href="pango-Miscellaneous-Utilities.html#pango-parse-enum" title="pango_parse_enum ()">pango_parse_enum</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> </td> <td class="function_name"> <a class="link" href="pango-Miscellaneous-Utilities.html#pango-parse-style" title="pango_parse_style ()">pango_parse_style</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> </td> <td class="function_name"> <a class="link" href="pango-Miscellaneous-Utilities.html#pango-parse-variant" title="pango_parse_variant ()">pango_parse_variant</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> </td> <td class="function_name"> <a class="link" href="pango-Miscellaneous-Utilities.html#pango-parse-weight" title="pango_parse_weight ()">pango_parse_weight</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> </td> <td class="function_name"> <a class="link" href="pango-Miscellaneous-Utilities.html#pango-parse-stretch" title="pango_parse_stretch ()">pango_parse_stretch</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a href="../glib/glib-Basic-Types.html#guint8"><span class="returnvalue">guint8</span></a> * </td> <td class="function_name"> <a class="link" href="pango-Miscellaneous-Utilities.html#pango-log2vis-get-embedding-levels" title="pango_log2vis_get_embedding_levels ()">pango_log2vis_get_embedding_levels</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> </td> <td class="function_name"> <a class="link" href="pango-Miscellaneous-Utilities.html#pango-is-zero-width" title="pango_is_zero_width ()">pango_is_zero_width</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <span class="returnvalue">void</span> </td> <td class="function_name"> <a class="link" href="pango-Miscellaneous-Utilities.html#pango-quantize-line-geometry" title="pango_quantize_line_geometry ()">pango_quantize_line_geometry</a> <span class="c_punctuation">()</span> </td> </tr> </tbody> </table></div> </div> <div class="refsect1"> <a name="pango-Miscellaneous-Utilities.description"></a><h2>Description</h2> <p>The functions and utilities in this section are mostly used from Pango backends and modules, but may be useful for other purposes too.</p> </div> <div class="refsect1"> <a name="pango-Miscellaneous-Utilities.functions_details"></a><h2>Functions</h2> <div class="refsect2"> <a name="pango-split-file-list"></a><h3>pango_split_file_list ()</h3> <pre class="programlisting"><span class="returnvalue">char</span> ** pango_split_file_list (<em class="parameter"><code>const <span class="type">char</span> *str</code></em>);</pre> <div class="warning"><p><code class="literal">pango_split_file_list</code> has been deprecated since version 1.38 and should not be used in newly-written code.</p></div> <p>Splits a <a href="../glib/glib-Standard-Macros.html#G-SEARCHPATH-SEPARATOR:CAPS"><code class="literal">G_SEARCHPATH_SEPARATOR</code></a>-separated list of files, stripping white space and substituting ~/ with $HOME/.</p> <div class="refsect3"> <a name="pango-split-file-list.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody><tr> <td class="parameter_name"><p>str</p></td> <td class="parameter_description"><p>a <a href="../glib/glib-Standard-Macros.html#G-SEARCHPATH-SEPARATOR:CAPS"><code class="literal">G_SEARCHPATH_SEPARATOR</code></a> separated list of filenames</p></td> <td class="parameter_annotations"> </td> </tr></tbody> </table></div> </div> <div class="refsect3"> <a name="pango-split-file-list.returns"></a><h4>Returns</h4> <p>a list of strings to be freed with <a href="../glib/glib-String-Utility-Functions.html#g-strfreev"><code class="function">g_strfreev()</code></a>. </p> <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> zero-terminated=1]</span></p> </div> </div> <hr> <div class="refsect2"> <a name="pango-trim-string"></a><h3>pango_trim_string ()</h3> <pre class="programlisting"><span class="returnvalue">char</span> * pango_trim_string (<em class="parameter"><code>const <span class="type">char</span> *str</code></em>);</pre> <div class="warning"><p><code class="literal">pango_trim_string</code> has been deprecated since version 1.38 and should not be used in newly-written code.</p></div> <p>Trims leading and trailing whitespace from a string.</p> <div class="refsect3"> <a name="pango-trim-string.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody><tr> <td class="parameter_name"><p>str</p></td> <td class="parameter_description"><p>a string</p></td> <td class="parameter_annotations"> </td> </tr></tbody> </table></div> </div> <div class="refsect3"> <a name="pango-trim-string.returns"></a><h4>Returns</h4> <p> A newly-allocated string that must be freed with <a href="../glib/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a></p> </div> </div> <hr> <div class="refsect2"> <a name="pango-read-line"></a><h3>pango_read_line ()</h3> <pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> pango_read_line (<em class="parameter"><code><span class="type">FILE</span> *stream</code></em>, <em class="parameter"><code><a href="../glib/glib-Strings.html#GString"><span class="type">GString</span></a> *str</code></em>);</pre> <div class="warning"><p><code class="literal">pango_read_line</code> has been deprecated since version 1.38 and should not be used in newly-written code.</p></div> <p>Reads an entire line from a file into a buffer. Lines may be delimited with '\n', '\r', '\n\r', or '\r\n'. The delimiter is not written into the buffer. Text after a '#' character is treated as a comment and skipped. '\' can be used to escape a # character. '\' proceeding a line delimiter combines adjacent lines. A '\' proceeding any other character is ignored and written into the output buffer unmodified.</p> <div class="refsect3"> <a name="pango-read-line.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>stream</p></td> <td class="parameter_description"><p>a stdio stream</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>str</p></td> <td class="parameter_description"><p><a href="../glib/glib-Strings.html#GString"><span class="type">GString</span></a> buffer into which to write the result</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="pango-read-line.returns"></a><h4>Returns</h4> <p> 0 if the stream was already at an <code class="literal">EOF</code> character, otherwise the number of lines read (this is useful for maintaining a line number counter which doesn't combine lines with '\')</p> </div> </div> <hr> <div class="refsect2"> <a name="pango-skip-space"></a><h3>pango_skip_space ()</h3> <pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> pango_skip_space (<em class="parameter"><code>const <span class="type">char</span> **pos</code></em>);</pre> <div class="warning"><p><code class="literal">pango_skip_space</code> has been deprecated since version 1.38 and should not be used in newly-written code.</p></div> <p>Skips 0 or more characters of white space.</p> <div class="refsect3"> <a name="pango-skip-space.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody><tr> <td class="parameter_name"><p>pos</p></td> <td class="parameter_description"><p>in/out string position. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>]</span></td> </tr></tbody> </table></div> </div> <div class="refsect3"> <a name="pango-skip-space.returns"></a><h4>Returns</h4> <p> <a href="../glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if skipping the white space leaves the position at a '\0' character.</p> </div> </div> <hr> <div class="refsect2"> <a name="pango-scan-word"></a><h3>pango_scan_word ()</h3> <pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> pango_scan_word (<em class="parameter"><code>const <span class="type">char</span> **pos</code></em>, <em class="parameter"><code><a href="../glib/glib-Strings.html#GString"><span class="type">GString</span></a> *out</code></em>);</pre> <div class="warning"><p><code class="literal">pango_scan_word</code> has been deprecated since version 1.38 and should not be used in newly-written code.</p></div> <p>Scans a word into a <a href="../glib/glib-Strings.html#GString"><span class="type">GString</span></a> buffer. A word consists of [A-Za-z_] followed by zero or more [A-Za-z_0-9] Leading white space is skipped.</p> <div class="refsect3"> <a name="pango-scan-word.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>pos</p></td> <td class="parameter_description"><p>in/out string position. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>]</span></td> </tr> <tr> <td class="parameter_name"><p>out</p></td> <td class="parameter_description"><p>a <a href="../glib/glib-Strings.html#GString"><span class="type">GString</span></a> into which to write the result</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="pango-scan-word.returns"></a><h4>Returns</h4> <p> <a href="../glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if a parse error occurred.</p> </div> </div> <hr> <div class="refsect2"> <a name="pango-scan-string"></a><h3>pango_scan_string ()</h3> <pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> pango_scan_string (<em class="parameter"><code>const <span class="type">char</span> **pos</code></em>, <em class="parameter"><code><a href="../glib/glib-Strings.html#GString"><span class="type">GString</span></a> *out</code></em>);</pre> <div class="warning"><p><code class="literal">pango_scan_string</code> has been deprecated since version 1.38 and should not be used in newly-written code.</p></div> <p>Scans a string into a <a href="../glib/glib-Strings.html#GString"><span class="type">GString</span></a> buffer. The string may either be a sequence of non-white-space characters, or a quoted string with '"'. Instead a quoted string, '\"' represents a literal quote. Leading white space outside of quotes is skipped.</p> <div class="refsect3"> <a name="pango-scan-string.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>pos</p></td> <td class="parameter_description"><p>in/out string position. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>]</span></td> </tr> <tr> <td class="parameter_name"><p>out</p></td> <td class="parameter_description"><p>a <a href="../glib/glib-Strings.html#GString"><span class="type">GString</span></a> into which to write the result</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="pango-scan-string.returns"></a><h4>Returns</h4> <p> <a href="../glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if a parse error occurred.</p> </div> </div> <hr> <div class="refsect2"> <a name="pango-scan-int"></a><h3>pango_scan_int ()</h3> <pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> pango_scan_int (<em class="parameter"><code>const <span class="type">char</span> **pos</code></em>, <em class="parameter"><code><span class="type">int</span> *out</code></em>);</pre> <div class="warning"><p><code class="literal">pango_scan_int</code> has been deprecated since version 1.38 and should not be used in newly-written code.</p></div> <p>Scans an integer. Leading white space is skipped.</p> <div class="refsect3"> <a name="pango-scan-int.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>pos</p></td> <td class="parameter_description"><p>in/out string position. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>]</span></td> </tr> <tr> <td class="parameter_name"><p>out</p></td> <td class="parameter_description"><p>an int into which to write the result. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="pango-scan-int.returns"></a><h4>Returns</h4> <p> <a href="../glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if a parse error occurred.</p> </div> </div> <hr> <div class="refsect2"> <a name="pango-parse-enum"></a><h3>pango_parse_enum ()</h3> <pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> pango_parse_enum (<em class="parameter"><code><a href="../gobject/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>, <em class="parameter"><code>const <span class="type">char</span> *str</code></em>, <em class="parameter"><code><span class="type">int</span> *value</code></em>, <em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> warn</code></em>, <em class="parameter"><code><span class="type">char</span> **possible_values</code></em>);</pre> <div class="warning"><p><code class="literal">pango_parse_enum</code> has been deprecated since version 1.38 and should not be used in newly-written code.</p></div> <p>Parses an enum type and stores the result in <em class="parameter"><code>value</code></em> .</p> <p>If <em class="parameter"><code>str</code></em> does not match the nick name of any of the possible values for the enum and is not an integer, <a href="../glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> is returned, a warning is issued if <em class="parameter"><code>warn</code></em> is <a href="../glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, and a string representing the list of possible values is stored in <em class="parameter"><code>possible_values</code></em> . The list is slash-separated, eg. "none/start/middle/end". If failed and <em class="parameter"><code>possible_values</code></em> is not <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, returned string should be freed using <a href="../glib/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a>.</p> <div class="refsect3"> <a name="pango-parse-enum.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>type</p></td> <td class="parameter_description"><p>enum type to parse, eg. <code class="literal">PANGO_TYPE_ELLIPSIZE_MODE</code>.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>str</p></td> <td class="parameter_description"><p>string to parse. May be <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td> </tr> <tr> <td class="parameter_name"><p>value</p></td> <td class="parameter_description"><p>integer to store the result in, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td> </tr> <tr> <td class="parameter_name"><p>warn</p></td> <td class="parameter_description"><p>if <a href="../glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, issue a <a href="../glib/glib-Message-Logging.html#g-warning"><code class="function">g_warning()</code></a> on bad input.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>possible_values</p></td> <td class="parameter_description"><p>place to store list of possible values on failure, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="pango-parse-enum.returns"></a><h4>Returns</h4> <p> <a href="../glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>str</code></em> was successfully parsed.</p> </div> <p class="since">Since: <a class="link" href="api-index-1-16.html#api-index-1.16">1.16</a></p> </div> <hr> <div class="refsect2"> <a name="pango-parse-style"></a><h3>pango_parse_style ()</h3> <pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> pango_parse_style (<em class="parameter"><code>const <span class="type">char</span> *str</code></em>, <em class="parameter"><code><a class="link" href="pango-Fonts.html#PangoStyle" title="enum PangoStyle"><span class="type">PangoStyle</span></a> *style</code></em>, <em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> warn</code></em>);</pre> <p>Parses a font style. The allowed values are "normal", "italic" and "oblique", case variations being ignored.</p> <div class="refsect3"> <a name="pango-parse-style.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>str</p></td> <td class="parameter_description"><p>a string to parse.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>style</p></td> <td class="parameter_description"><p>a <a class="link" href="pango-Fonts.html#PangoStyle" title="enum PangoStyle"><span class="type">PangoStyle</span></a> to store the result in. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td> </tr> <tr> <td class="parameter_name"><p>warn</p></td> <td class="parameter_description"><p>if <a href="../glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, issue a <a href="../glib/glib-Message-Logging.html#g-warning"><code class="function">g_warning()</code></a> on bad input.</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="pango-parse-style.returns"></a><h4>Returns</h4> <p> <a href="../glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>str</code></em> was successfully parsed.</p> </div> </div> <hr> <div class="refsect2"> <a name="pango-parse-variant"></a><h3>pango_parse_variant ()</h3> <pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> pango_parse_variant (<em class="parameter"><code>const <span class="type">char</span> *str</code></em>, <em class="parameter"><code><a class="link" href="pango-Fonts.html#PangoVariant" title="enum PangoVariant"><span class="type">PangoVariant</span></a> *variant</code></em>, <em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> warn</code></em>);</pre> <p>Parses a font variant. The allowed values are "normal" and "smallcaps" or "small_caps", case variations being ignored.</p> <div class="refsect3"> <a name="pango-parse-variant.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>str</p></td> <td class="parameter_description"><p>a string to parse.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>variant</p></td> <td class="parameter_description"><p>a <a class="link" href="pango-Fonts.html#PangoVariant" title="enum PangoVariant"><span class="type">PangoVariant</span></a> to store the result in. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td> </tr> <tr> <td class="parameter_name"><p>warn</p></td> <td class="parameter_description"><p>if <a href="../glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, issue a <a href="../glib/glib-Message-Logging.html#g-warning"><code class="function">g_warning()</code></a> on bad input.</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="pango-parse-variant.returns"></a><h4>Returns</h4> <p> <a href="../glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>str</code></em> was successfully parsed.</p> </div> </div> <hr> <div class="refsect2"> <a name="pango-parse-weight"></a><h3>pango_parse_weight ()</h3> <pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> pango_parse_weight (<em class="parameter"><code>const <span class="type">char</span> *str</code></em>, <em class="parameter"><code><a class="link" href="pango-Fonts.html#PangoWeight" title="enum PangoWeight"><span class="type">PangoWeight</span></a> *weight</code></em>, <em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> warn</code></em>);</pre> <p>Parses a font weight. The allowed values are "heavy", "ultrabold", "bold", "normal", "light", "ultraleight" and integers. Case variations are ignored.</p> <div class="refsect3"> <a name="pango-parse-weight.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>str</p></td> <td class="parameter_description"><p>a string to parse.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>weight</p></td> <td class="parameter_description"><p>a <a class="link" href="pango-Fonts.html#PangoWeight" title="enum PangoWeight"><span class="type">PangoWeight</span></a> to store the result in. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td> </tr> <tr> <td class="parameter_name"><p>warn</p></td> <td class="parameter_description"><p>if <a href="../glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, issue a <a href="../glib/glib-Message-Logging.html#g-warning"><code class="function">g_warning()</code></a> on bad input.</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="pango-parse-weight.returns"></a><h4>Returns</h4> <p> <a href="../glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>str</code></em> was successfully parsed.</p> </div> </div> <hr> <div class="refsect2"> <a name="pango-parse-stretch"></a><h3>pango_parse_stretch ()</h3> <pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> pango_parse_stretch (<em class="parameter"><code>const <span class="type">char</span> *str</code></em>, <em class="parameter"><code><a class="link" href="pango-Fonts.html#PangoStretch" title="enum PangoStretch"><span class="type">PangoStretch</span></a> *stretch</code></em>, <em class="parameter"><code><a href="../glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> warn</code></em>);</pre> <p>Parses a font stretch. The allowed values are "ultra_condensed", "extra_condensed", "condensed", "semi_condensed", "normal", "semi_expanded", "expanded", "extra_expanded" and "ultra_expanded". Case variations are ignored and the '_' characters may be omitted.</p> <div class="refsect3"> <a name="pango-parse-stretch.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>str</p></td> <td class="parameter_description"><p>a string to parse.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>stretch</p></td> <td class="parameter_description"><p>a <a class="link" href="pango-Fonts.html#PangoStretch" title="enum PangoStretch"><span class="type">PangoStretch</span></a> to store the result in. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td> </tr> <tr> <td class="parameter_name"><p>warn</p></td> <td class="parameter_description"><p>if <a href="../glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, issue a <a href="../glib/glib-Message-Logging.html#g-warning"><code class="function">g_warning()</code></a> on bad input.</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="pango-parse-stretch.returns"></a><h4>Returns</h4> <p> <a href="../glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>str</code></em> was successfully parsed.</p> </div> </div> <hr> <div class="refsect2"> <a name="pango-log2vis-get-embedding-levels"></a><h3>pango_log2vis_get_embedding_levels ()</h3> <pre class="programlisting"><a href="../glib/glib-Basic-Types.html#guint8"><span class="returnvalue">guint8</span></a> * pango_log2vis_get_embedding_levels (<em class="parameter"><code>const <a href="../glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *text</code></em>, <em class="parameter"><code><span class="type">int</span> length</code></em>, <em class="parameter"><code><a class="link" href="pango-Bidirectional-Text.html#PangoDirection" title="enum PangoDirection"><span class="type">PangoDirection</span></a> *pbase_dir</code></em>);</pre> <p>This will return the bidirectional embedding levels of the input paragraph as defined by the Unicode Bidirectional Algorithm available at:</p> <p> http://www.unicode.org/reports/tr9/</p> <p>If the input base direction is a weak direction, the direction of the characters in the text will determine the final resolved direction.</p> <div class="refsect3"> <a name="pango-log2vis-get-embedding-levels.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>text</p></td> <td class="parameter_description"><p>the text to itemize.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>length</p></td> <td class="parameter_description"><p>the number of bytes (not characters) to process, or -1 if <em class="parameter"><code>text</code></em> is nul-terminated and the length should be calculated.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>pbase_dir</p></td> <td class="parameter_description"><p>input base direction, and output resolved direction.</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="pango-log2vis-get-embedding-levels.returns"></a><h4>Returns</h4> <p> a newly allocated array of embedding levels, one item per character (not byte), that should be freed using g_free.</p> </div> <p class="since">Since: <a class="link" href="api-index-1-4.html#api-index-1.4">1.4</a></p> </div> <hr> <div class="refsect2"> <a name="pango-is-zero-width"></a><h3>pango_is_zero_width ()</h3> <pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> pango_is_zero_width (<em class="parameter"><code><a href="../glib/glib-Unicode-Manipulation.html#gunichar"><span class="type">gunichar</span></a> ch</code></em>);</pre> <p>Checks <em class="parameter"><code>ch</code></em> to see if it is a character that should not be normally rendered on the screen. This includes all Unicode characters with "ZERO WIDTH" in their name, as well as <em class="firstterm">bidi</em> formatting characters, and a few other ones. This is totally different from <a href="../glib/glib-Unicode-Manipulation.html#g-unichar-iszerowidth"><code class="function">g_unichar_iszerowidth()</code></a> and is at best misnamed.</p> <div class="refsect3"> <a name="pango-is-zero-width.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody><tr> <td class="parameter_name"><p>ch</p></td> <td class="parameter_description"><p>a Unicode character</p></td> <td class="parameter_annotations"> </td> </tr></tbody> </table></div> </div> <div class="refsect3"> <a name="pango-is-zero-width.returns"></a><h4>Returns</h4> <p> <a href="../glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>ch</code></em> is a zero-width character, <a href="../glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise</p> </div> <p class="since">Since: <a class="link" href="api-index-1-10.html#api-index-1.10">1.10</a></p> </div> <hr> <div class="refsect2"> <a name="pango-quantize-line-geometry"></a><h3>pango_quantize_line_geometry ()</h3> <pre class="programlisting"><span class="returnvalue">void</span> pango_quantize_line_geometry (<em class="parameter"><code><span class="type">int</span> *thickness</code></em>, <em class="parameter"><code><span class="type">int</span> *position</code></em>);</pre> <p>Quantizes the thickness and position of a line, typically an underline or strikethrough, to whole device pixels, that is integer multiples of <a class="link" href="pango-Glyph-Storage.html#PANGO-SCALE:CAPS" title="PANGO_SCALE"><code class="literal">PANGO_SCALE</code></a>. The purpose of this function is to avoid such lines looking blurry.</p> <p>Care is taken to make sure <em class="parameter"><code>thickness</code></em> is at least one pixel when this function returns, but returned <em class="parameter"><code>position</code></em> may become zero as a result of rounding.</p> <div class="refsect3"> <a name="pango-quantize-line-geometry.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>thickness</p></td> <td class="parameter_description"><p>pointer to the thickness of a line, in Pango units. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>]</span></td> </tr> <tr> <td class="parameter_name"><p>position</p></td> <td class="parameter_description"><p>corresponding position. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>]</span></td> </tr> </tbody> </table></div> </div> <p class="since">Since: <a class="link" href="api-index-1-12.html#api-index-1.12">1.12</a></p> </div> </div> </div> <div class="footer"> <hr>Generated by GTK-Doc V1.32</div> </body> </html>