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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>FreeType Fonts: Cairo: A Vector Graphics Library</title> <meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> <link rel="home" href="index.html" title="Cairo: A Vector Graphics Library"> <link rel="up" href="cairo-fonts.html" title="Fonts"> <link rel="prev" href="cairo-cairo-font-options-t.html" title="cairo_font_options_t"> <link rel="next" href="cairo-Win32-Fonts.html" title="Win32 Fonts"> <meta name="generator" content="GTK-Doc V1.25 (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="#cairo-FreeType-Fonts.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="cairo-fonts.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> <td><a accesskey="p" href="cairo-cairo-font-options-t.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> <td><a accesskey="n" href="cairo-Win32-Fonts.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> </tr></table> <div class="refentry"> <a name="cairo-FreeType-Fonts"></a><div class="titlepage"></div> <div class="refnamediv"><table width="100%"><tr> <td valign="top"> <h2><span class="refentrytitle"><a name="cairo-FreeType-Fonts.top_of_page"></a>FreeType Fonts</span></h2> <p>FreeType Fonts — Font support for FreeType</p> </td> <td class="gallery_image" valign="top" align="right"></td> </tr></table></div> <div class="refsect1"> <a name="cairo-FreeType-Fonts.functions"></a><h2>Functions</h2> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="functions_return"> <col class="functions_name"> </colgroup> <tbody> <tr> <td class="function_type"> <a class="link" href="cairo-cairo-font-face-t.html#cairo-font-face-t" title="cairo_font_face_t"><span class="returnvalue">cairo_font_face_t</span></a> * </td> <td class="function_name"> <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-font-face-create-for-ft-face" title="cairo_ft_font_face_create_for_ft_face ()">cairo_ft_font_face_create_for_ft_face</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a class="link" href="cairo-cairo-font-face-t.html#cairo-font-face-t" title="cairo_font_face_t"><span class="returnvalue">cairo_font_face_t</span></a> * </td> <td class="function_name"> <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-font-face-create-for-pattern" title="cairo_ft_font_face_create_for_pattern ()">cairo_ft_font_face_create_for_pattern</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="cairo-FreeType-Fonts.html#cairo-ft-font-options-substitute" title="cairo_ft_font_options_substitute ()">cairo_ft_font_options_substitute</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <span class="returnvalue">FT_Face</span> </td> <td class="function_name"> <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-scaled-font-lock-face" title="cairo_ft_scaled_font_lock_face ()">cairo_ft_scaled_font_lock_face</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="cairo-FreeType-Fonts.html#cairo-ft-scaled-font-unlock-face" title="cairo_ft_scaled_font_unlock_face ()">cairo_ft_scaled_font_unlock_face</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type">unsigned <span class="returnvalue">int</span> </td> <td class="function_name"> <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-font-face-get-synthesize" title="cairo_ft_font_face_get_synthesize ()">cairo_ft_font_face_get_synthesize</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="cairo-FreeType-Fonts.html#cairo-ft-font-face-set-synthesize" title="cairo_ft_font_face_set_synthesize ()">cairo_ft_font_face_set_synthesize</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="cairo-FreeType-Fonts.html#cairo-ft-font-face-unset-synthesize" title="cairo_ft_font_face_unset_synthesize ()">cairo_ft_font_face_unset_synthesize</a> <span class="c_punctuation">()</span> </td> </tr> </tbody> </table></div> </div> <div class="refsect1"> <a name="cairo-FreeType-Fonts.other"></a><h2>Types and Values</h2> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="name"> <col class="description"> </colgroup> <tbody> <tr> <td class="define_keyword">#define</td> <td class="function_name"><a class="link" href="cairo-FreeType-Fonts.html#CAIRO-HAS-FT-FONT:CAPS" title="CAIRO_HAS_FT_FONT">CAIRO_HAS_FT_FONT</a></td> </tr> <tr> <td class="define_keyword">#define</td> <td class="function_name"><a class="link" href="cairo-FreeType-Fonts.html#CAIRO-HAS-FC-FONT:CAPS" title="CAIRO_HAS_FC_FONT">CAIRO_HAS_FC_FONT</a></td> </tr> <tr> <td class="datatype_keyword">enum</td> <td class="function_name"><a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-synthesize-t" title="enum cairo_ft_synthesize_t">cairo_ft_synthesize_t</a></td> </tr> </tbody> </table></div> </div> <div class="refsect1"> <a name="cairo-FreeType-Fonts.description"></a><h2>Description</h2> <p>The FreeType font backend is primarily used to render text on GNU/Linux systems, but can be used on other platforms too.</p> </div> <div class="refsect1"> <a name="cairo-FreeType-Fonts.functions_details"></a><h2>Functions</h2> <div class="refsect2"> <a name="cairo-ft-font-face-create-for-ft-face"></a><h3>cairo_ft_font_face_create_for_ft_face ()</h3> <pre class="programlisting"><a class="link" href="cairo-cairo-font-face-t.html#cairo-font-face-t" title="cairo_font_face_t"><span class="returnvalue">cairo_font_face_t</span></a> * cairo_ft_font_face_create_for_ft_face (<em class="parameter"><code><span class="type">FT_Face</span> face</code></em>, <em class="parameter"><code><span class="type">int</span> load_flags</code></em>);</pre> <p>Creates a new font face for the FreeType font backend from a pre-opened FreeType face. This font can then be used with <a class="link" href="cairo-text.html#cairo-set-font-face" title="cairo_set_font_face ()"><code class="function">cairo_set_font_face()</code></a> or <a class="link" href="cairo-cairo-scaled-font-t.html#cairo-scaled-font-create" title="cairo_scaled_font_create ()"><code class="function">cairo_scaled_font_create()</code></a>. The <a class="link" href="cairo-cairo-scaled-font-t.html#cairo-scaled-font-t" title="cairo_scaled_font_t"><span class="type">cairo_scaled_font_t</span></a> returned from <a class="link" href="cairo-cairo-scaled-font-t.html#cairo-scaled-font-create" title="cairo_scaled_font_create ()"><code class="function">cairo_scaled_font_create()</code></a> is also for the FreeType backend and can be used with functions such as <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-scaled-font-lock-face" title="cairo_ft_scaled_font_lock_face ()"><code class="function">cairo_ft_scaled_font_lock_face()</code></a>. Note that Cairo may keep a reference to the FT_Face alive in a font-cache and the exact lifetime of the reference depends highly upon the exact usage pattern and is subject to external factors. You must not call <code class="function">FT_Done_Face()</code> before the last reference to the <a class="link" href="cairo-cairo-font-face-t.html#cairo-font-face-t" title="cairo_font_face_t"><span class="type">cairo_font_face_t</span></a> has been dropped.</p> <p>As an example, below is how one might correctly couple the lifetime of the FreeType face object to the <a class="link" href="cairo-cairo-font-face-t.html#cairo-font-face-t" title="cairo_font_face_t"><span class="type">cairo_font_face_t</span></a>.</p> <div class="informalexample"><pre class="programlisting"> static const cairo_user_data_key_t key; font_face = cairo_ft_font_face_create_for_ft_face (ft_face, 0); status = cairo_font_face_set_user_data (font_face, &key, ft_face, (cairo_destroy_func_t) FT_Done_Face); if (status) { cairo_font_face_destroy (font_face); FT_Done_Face (ft_face); return ERROR; } </pre></div> <div class="refsect3"> <a name="cairo-ft-font-face-create-for-ft-face.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>face</p></td> <td class="parameter_description"><p>A FreeType face object, already opened. This must be kept around until the face's ref_count drops to zero and it is freed. Since the face may be referenced internally to Cairo, the best way to determine when it is safe to free the face is to pass a <a class="link" href="cairo-Types.html#cairo-destroy-func-t" title="cairo_destroy_func_t ()"><span class="type">cairo_destroy_func_t</span></a> to <a class="link" href="cairo-cairo-font-face-t.html#cairo-font-face-set-user-data" title="cairo_font_face_set_user_data ()"><code class="function">cairo_font_face_set_user_data()</code></a></p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>load_flags</p></td> <td class="parameter_description"><p>flags to pass to FT_Load_Glyph when loading glyphs from the font. These flags are OR'ed together with the flags derived from the <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> passed to <a class="link" href="cairo-cairo-scaled-font-t.html#cairo-scaled-font-create" title="cairo_scaled_font_create ()"><code class="function">cairo_scaled_font_create()</code></a>, so only a few values such as <code class="literal">FT_LOAD_VERTICAL_LAYOUT</code>, and <code class="literal">FT_LOAD_FORCE_AUTOHINT</code> are useful. You should not pass any of the flags affecting the load target, such as <code class="literal">FT_LOAD_TARGET_LIGHT</code>.</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="cairo-ft-font-face-create-for-ft-face.returns"></a><h4>Returns</h4> <p> a newly created <a class="link" href="cairo-cairo-font-face-t.html#cairo-font-face-t" title="cairo_font_face_t"><span class="type">cairo_font_face_t</span></a>. Free with <a class="link" href="cairo-cairo-font-face-t.html#cairo-font-face-destroy" title="cairo_font_face_destroy ()"><code class="function">cairo_font_face_destroy()</code></a> when you are done using it.</p> </div> <p class="since">Since: 1.0</p> </div> <hr> <div class="refsect2"> <a name="cairo-ft-font-face-create-for-pattern"></a><h3>cairo_ft_font_face_create_for_pattern ()</h3> <pre class="programlisting"><a class="link" href="cairo-cairo-font-face-t.html#cairo-font-face-t" title="cairo_font_face_t"><span class="returnvalue">cairo_font_face_t</span></a> * cairo_ft_font_face_create_for_pattern (<em class="parameter"><code><span class="type">FcPattern</span> *pattern</code></em>);</pre> <p>Creates a new font face for the FreeType font backend based on a fontconfig pattern. This font can then be used with <a class="link" href="cairo-text.html#cairo-set-font-face" title="cairo_set_font_face ()"><code class="function">cairo_set_font_face()</code></a> or <a class="link" href="cairo-cairo-scaled-font-t.html#cairo-scaled-font-create" title="cairo_scaled_font_create ()"><code class="function">cairo_scaled_font_create()</code></a>. The <a class="link" href="cairo-cairo-scaled-font-t.html#cairo-scaled-font-t" title="cairo_scaled_font_t"><span class="type">cairo_scaled_font_t</span></a> returned from <a class="link" href="cairo-cairo-scaled-font-t.html#cairo-scaled-font-create" title="cairo_scaled_font_create ()"><code class="function">cairo_scaled_font_create()</code></a> is also for the FreeType backend and can be used with functions such as <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-scaled-font-lock-face" title="cairo_ft_scaled_font_lock_face ()"><code class="function">cairo_ft_scaled_font_lock_face()</code></a>.</p> <p>Font rendering options are represented both here and when you call <a class="link" href="cairo-cairo-scaled-font-t.html#cairo-scaled-font-create" title="cairo_scaled_font_create ()"><code class="function">cairo_scaled_font_create()</code></a>. Font options that have a representation in a <span class="type">FcPattern</span> must be passed in here; to modify <span class="type">FcPattern</span> appropriately to reflect the options in a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a>, call <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-font-options-substitute" title="cairo_ft_font_options_substitute ()"><code class="function">cairo_ft_font_options_substitute()</code></a>.</p> <p>The pattern's FC_FT_FACE element is inspected first and if that is set, that will be the FreeType font face associated with the returned cairo font face. Otherwise the FC_FILE element is checked. If it's set, that and the value of the FC_INDEX element (defaults to zero) of <em class="parameter"><code>pattern</code></em> are used to load a font face from file.</p> <p>If both steps from the previous paragraph fails, <em class="parameter"><code>pattern</code></em> will be passed to FcConfigSubstitute, FcDefaultSubstitute, and finally FcFontMatch, and the resulting font pattern is used.</p> <p>If the FC_FT_FACE element of <em class="parameter"><code>pattern</code></em> is set, the user is responsible for making sure that the referenced FT_Face remains valid for the life time of the returned <a class="link" href="cairo-cairo-font-face-t.html#cairo-font-face-t" title="cairo_font_face_t"><span class="type">cairo_font_face_t</span></a>. See <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-font-face-create-for-ft-face" title="cairo_ft_font_face_create_for_ft_face ()"><code class="function">cairo_ft_font_face_create_for_ft_face()</code></a> for an example of how to couple the life time of the FT_Face to that of the cairo font-face.</p> <div class="refsect3"> <a name="cairo-ft-font-face-create-for-pattern.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>pattern</p></td> <td class="parameter_description"><p>A fontconfig pattern. Cairo makes a copy of the pattern if it needs to. You are free to modify or free <em class="parameter"><code>pattern</code></em> after this call.</p></td> <td class="parameter_annotations"> </td> </tr></tbody> </table></div> </div> <div class="refsect3"> <a name="cairo-ft-font-face-create-for-pattern.returns"></a><h4>Returns</h4> <p> a newly created <a class="link" href="cairo-cairo-font-face-t.html#cairo-font-face-t" title="cairo_font_face_t"><span class="type">cairo_font_face_t</span></a>. Free with <a class="link" href="cairo-cairo-font-face-t.html#cairo-font-face-destroy" title="cairo_font_face_destroy ()"><code class="function">cairo_font_face_destroy()</code></a> when you are done using it.</p> </div> <p class="since">Since: 1.0</p> </div> <hr> <div class="refsect2"> <a name="cairo-ft-font-options-substitute"></a><h3>cairo_ft_font_options_substitute ()</h3> <pre class="programlisting"><span class="returnvalue">void</span> cairo_ft_font_options_substitute (<em class="parameter"><code>const <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> *options</code></em>, <em class="parameter"><code><span class="type">FcPattern</span> *pattern</code></em>);</pre> <p>Add options to a <span class="type">FcPattern</span> based on a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> font options object. Options that are already in the pattern, are not overridden, so you should call this function after calling <code class="function">FcConfigSubstitute()</code> (the user's settings should override options based on the surface type), but before calling <code class="function">FcDefaultSubstitute()</code>.</p> <div class="refsect3"> <a name="cairo-ft-font-options-substitute.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>options</p></td> <td class="parameter_description"><p>a <a class="link" href="cairo-cairo-font-options-t.html#cairo-font-options-t" title="cairo_font_options_t"><span class="type">cairo_font_options_t</span></a> object</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>pattern</p></td> <td class="parameter_description"><p>an existing <span class="type">FcPattern</span></p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <p class="since">Since: 1.0</p> </div> <hr> <div class="refsect2"> <a name="cairo-ft-scaled-font-lock-face"></a><h3>cairo_ft_scaled_font_lock_face ()</h3> <pre class="programlisting"><span class="returnvalue">FT_Face</span> cairo_ft_scaled_font_lock_face (<em class="parameter"><code><a class="link" href="cairo-cairo-scaled-font-t.html#cairo-scaled-font-t" title="cairo_scaled_font_t"><span class="type">cairo_scaled_font_t</span></a> *scaled_font</code></em>);</pre> <p>cairo_ft_scaled_font_lock_face() gets the <span class="type">FT_Face</span> object from a FreeType backend font and scales it appropriately for the font and applies OpenType font variations if applicable. You must release the face with <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-scaled-font-unlock-face" title="cairo_ft_scaled_font_unlock_face ()"><code class="function">cairo_ft_scaled_font_unlock_face()</code></a> when you are done using it. Since the <span class="type">FT_Face</span> object can be shared between multiple <a class="link" href="cairo-cairo-scaled-font-t.html#cairo-scaled-font-t" title="cairo_scaled_font_t"><span class="type">cairo_scaled_font_t</span></a> objects, you must not lock any other font objects until you unlock this one. A count is kept of the number of times <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-scaled-font-lock-face" title="cairo_ft_scaled_font_lock_face ()"><code class="function">cairo_ft_scaled_font_lock_face()</code></a> is called. <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-scaled-font-unlock-face" title="cairo_ft_scaled_font_unlock_face ()"><code class="function">cairo_ft_scaled_font_unlock_face()</code></a> must be called the same number of times.</p> <p>You must be careful when using this function in a library or in a threaded application, because freetype's design makes it unsafe to call freetype functions simultaneously from multiple threads, (even if using distinct FT_Face objects). Because of this, application code that acquires an FT_Face object with this call must add its own locking to protect any use of that object, (and which also must protect any other calls into cairo as almost any cairo function might result in a call into the freetype library).</p> <div class="refsect3"> <a name="cairo-ft-scaled-font-lock-face.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>scaled_font</p></td> <td class="parameter_description"><p>A <a class="link" href="cairo-cairo-scaled-font-t.html#cairo-scaled-font-t" title="cairo_scaled_font_t"><span class="type">cairo_scaled_font_t</span></a> from the FreeType font backend. Such an object can be created by calling <a class="link" href="cairo-cairo-scaled-font-t.html#cairo-scaled-font-create" title="cairo_scaled_font_create ()"><code class="function">cairo_scaled_font_create()</code></a> on a FreeType backend font face (see <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-font-face-create-for-pattern" title="cairo_ft_font_face_create_for_pattern ()"><code class="function">cairo_ft_font_face_create_for_pattern()</code></a>, <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-font-face-create-for-ft-face" title="cairo_ft_font_face_create_for_ft_face ()"><code class="function">cairo_ft_font_face_create_for_ft_face()</code></a>).</p></td> <td class="parameter_annotations"> </td> </tr></tbody> </table></div> </div> <div class="refsect3"> <a name="cairo-ft-scaled-font-lock-face.returns"></a><h4>Returns</h4> <p> The <span class="type">FT_Face</span> object for <em class="parameter"><code>font</code></em> , scaled appropriately, or <a href="/usr/share/gtk-doc/html/glibglib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if <em class="parameter"><code>scaled_font</code></em> is in an error state (see <a class="link" href="cairo-cairo-scaled-font-t.html#cairo-scaled-font-status" title="cairo_scaled_font_status ()"><code class="function">cairo_scaled_font_status()</code></a>) or there is insufficient memory.</p> </div> <p class="since">Since: 1.0</p> </div> <hr> <div class="refsect2"> <a name="cairo-ft-scaled-font-unlock-face"></a><h3>cairo_ft_scaled_font_unlock_face ()</h3> <pre class="programlisting"><span class="returnvalue">void</span> cairo_ft_scaled_font_unlock_face (<em class="parameter"><code><a class="link" href="cairo-cairo-scaled-font-t.html#cairo-scaled-font-t" title="cairo_scaled_font_t"><span class="type">cairo_scaled_font_t</span></a> *scaled_font</code></em>);</pre> <p>Releases a face obtained with <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-scaled-font-lock-face" title="cairo_ft_scaled_font_lock_face ()"><code class="function">cairo_ft_scaled_font_lock_face()</code></a>.</p> <div class="refsect3"> <a name="cairo-ft-scaled-font-unlock-face.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>scaled_font</p></td> <td class="parameter_description"><p>A <a class="link" href="cairo-cairo-scaled-font-t.html#cairo-scaled-font-t" title="cairo_scaled_font_t"><span class="type">cairo_scaled_font_t</span></a> from the FreeType font backend. Such an object can be created by calling <a class="link" href="cairo-cairo-scaled-font-t.html#cairo-scaled-font-create" title="cairo_scaled_font_create ()"><code class="function">cairo_scaled_font_create()</code></a> on a FreeType backend font face (see <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-font-face-create-for-pattern" title="cairo_ft_font_face_create_for_pattern ()"><code class="function">cairo_ft_font_face_create_for_pattern()</code></a>, <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-font-face-create-for-ft-face" title="cairo_ft_font_face_create_for_ft_face ()"><code class="function">cairo_ft_font_face_create_for_ft_face()</code></a>).</p></td> <td class="parameter_annotations"> </td> </tr></tbody> </table></div> </div> <p class="since">Since: 1.0</p> </div> <hr> <div class="refsect2"> <a name="cairo-ft-font-face-get-synthesize"></a><h3>cairo_ft_font_face_get_synthesize ()</h3> <pre class="programlisting">unsigned <span class="returnvalue">int</span> cairo_ft_font_face_get_synthesize (<em class="parameter"><code><a class="link" href="cairo-cairo-font-face-t.html#cairo-font-face-t" title="cairo_font_face_t"><span class="type">cairo_font_face_t</span></a> *font_face</code></em>);</pre> <p>See <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-synthesize-t" title="enum cairo_ft_synthesize_t"><span class="type">cairo_ft_synthesize_t</span></a>.</p> <div class="refsect3"> <a name="cairo-ft-font-face-get-synthesize.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>font_face</p></td> <td class="parameter_description"><p>The <span class="type">cairo_ft_font_face_t</span> object to query</p></td> <td class="parameter_annotations"> </td> </tr></tbody> </table></div> </div> <div class="refsect3"> <a name="cairo-ft-font-face-get-synthesize.returns"></a><h4>Returns</h4> <p> the current set of synthesis options.</p> </div> <p class="since">Since: 1.12</p> </div> <hr> <div class="refsect2"> <a name="cairo-ft-font-face-set-synthesize"></a><h3>cairo_ft_font_face_set_synthesize ()</h3> <pre class="programlisting"><span class="returnvalue">void</span> cairo_ft_font_face_set_synthesize (<em class="parameter"><code><a class="link" href="cairo-cairo-font-face-t.html#cairo-font-face-t" title="cairo_font_face_t"><span class="type">cairo_font_face_t</span></a> *font_face</code></em>, <em class="parameter"><code>unsigned <span class="type">int</span> synth_flags</code></em>);</pre> <p>FreeType provides the ability to synthesize different glyphs from a base font, which is useful if you lack those glyphs from a true bold or oblique font. See also <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-synthesize-t" title="enum cairo_ft_synthesize_t"><span class="type">cairo_ft_synthesize_t</span></a>.</p> <div class="refsect3"> <a name="cairo-ft-font-face-set-synthesize.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>font_face</p></td> <td class="parameter_description"><p>The <span class="type">cairo_ft_font_face_t</span> object to modify</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>synth_flags</p></td> <td class="parameter_description"><p>the set of synthesis options to enable</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <p class="since">Since: 1.12</p> </div> <hr> <div class="refsect2"> <a name="cairo-ft-font-face-unset-synthesize"></a><h3>cairo_ft_font_face_unset_synthesize ()</h3> <pre class="programlisting"><span class="returnvalue">void</span> cairo_ft_font_face_unset_synthesize (<em class="parameter"><code><a class="link" href="cairo-cairo-font-face-t.html#cairo-font-face-t" title="cairo_font_face_t"><span class="type">cairo_font_face_t</span></a> *font_face</code></em>, <em class="parameter"><code>unsigned <span class="type">int</span> synth_flags</code></em>);</pre> <p>See <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-font-face-set-synthesize" title="cairo_ft_font_face_set_synthesize ()"><code class="function">cairo_ft_font_face_set_synthesize()</code></a>.</p> <div class="refsect3"> <a name="cairo-ft-font-face-unset-synthesize.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>font_face</p></td> <td class="parameter_description"><p>The <span class="type">cairo_ft_font_face_t</span> object to modify</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>synth_flags</p></td> <td class="parameter_description"><p>the set of synthesis options to disable</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <p class="since">Since: 1.12</p> </div> </div> <div class="refsect1"> <a name="cairo-FreeType-Fonts.other_details"></a><h2>Types and Values</h2> <div class="refsect2"> <a name="CAIRO-HAS-FT-FONT:CAPS"></a><h3>CAIRO_HAS_FT_FONT</h3> <pre class="programlisting">#define CAIRO_HAS_FT_FONT 1 </pre> <p>Defined if the FreeType font backend is available. This macro can be used to conditionally compile backend-specific code.</p> <p class="since">Since: 1.0</p> </div> <hr> <div class="refsect2"> <a name="CAIRO-HAS-FC-FONT:CAPS"></a><h3>CAIRO_HAS_FC_FONT</h3> <pre class="programlisting">#define CAIRO_HAS_FC_FONT 1 </pre> <p>Defined if the Fontconfig-specific functions of the FreeType font backend are available. This macro can be used to conditionally compile backend-specific code.</p> <p class="since">Since: 1.10</p> </div> <hr> <div class="refsect2"> <a name="cairo-ft-synthesize-t"></a><h3>enum cairo_ft_synthesize_t</h3> <p>A set of synthesis options to control how FreeType renders the glyphs for a particular font face.</p> <p>Individual synthesis features of a <span class="type">cairo_ft_font_face_t</span> can be set using <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-font-face-set-synthesize" title="cairo_ft_font_face_set_synthesize ()"><code class="function">cairo_ft_font_face_set_synthesize()</code></a>, or disabled using <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-font-face-unset-synthesize" title="cairo_ft_font_face_unset_synthesize ()"><code class="function">cairo_ft_font_face_unset_synthesize()</code></a>. The currently enabled set of synthesis options can be queried with <a class="link" href="cairo-FreeType-Fonts.html#cairo-ft-font-face-get-synthesize" title="cairo_ft_font_face_get_synthesize ()"><code class="function">cairo_ft_font_face_get_synthesize()</code></a>.</p> <p>Note: that when synthesizing glyphs, the font metrics returned will only be estimates.</p> <div class="refsect3"> <a name="cairo-ft-synthesize-t.members"></a><h4>Members</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="300px" class="enum_members_name"> <col class="enum_members_description"> <col width="200px" class="enum_members_annotations"> </colgroup> <tbody> <tr> <td class="enum_member_name"><p><a name="CAIRO-FT-SYNTHESIZE-BOLD:CAPS"></a>CAIRO_FT_SYNTHESIZE_BOLD</p></td> <td class="enum_member_description"> <p>Embolden the glyphs (redraw with a pixel offset)</p> </td> <td class="enum_member_annotations"> </td> </tr> <tr> <td class="enum_member_name"><p><a name="CAIRO-FT-SYNTHESIZE-OBLIQUE:CAPS"></a>CAIRO_FT_SYNTHESIZE_OBLIQUE</p></td> <td class="enum_member_description"> <p>Slant the glyph outline by 12 degrees to the right.</p> </td> <td class="enum_member_annotations"> </td> </tr> </tbody> </table></div> </div> <p class="since">Since: 1.12</p> </div> </div> <div class="refsect1"> <a name="cairo-FreeType-Fonts.see-also"></a><h2>See Also</h2> <p><a class="link" href="cairo-cairo-font-face-t.html#cairo-font-face-t" title="cairo_font_face_t"><span class="type">cairo_font_face_t</span></a></p> </div> </div> <div class="footer"> <hr>Generated by GTK-Doc V1.25</div> </body> </html>