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<a name="line-2"></a><span class='hs-comment'>{-# LINE 2 "./Graphics/Rendering/Pango/Rendering.chs" #-}</span>
<a name="line-3"></a><span class='hs-comment'>-- -*-haskell-*-</span>
<a name="line-4"></a><span class='hs-comment'>-- GIMP Toolkit (GTK) - text layout functions Rendering</span>
<a name="line-5"></a><span class='hs-comment'>--</span>
<a name="line-6"></a><span class='hs-comment'>-- Author : Axel Simon</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- Created: 8 Feburary 2003</span>
<a name="line-9"></a><span class='hs-comment'>--</span>
<a name="line-10"></a><span class='hs-comment'>-- Copyright (C) 1999-2005 Axel Simon</span>
<a name="line-11"></a><span class='hs-comment'>--</span>
<a name="line-12"></a><span class='hs-comment'>-- This library is free software; you can redistribute it and/or</span>
<a name="line-13"></a><span class='hs-comment'>-- modify it under the terms of the GNU Lesser General Public</span>
<a name="line-14"></a><span class='hs-comment'>-- License as published by the Free Software Foundation; either</span>
<a name="line-15"></a><span class='hs-comment'>-- version 2.1 of the License, or (at your option) any later version.</span>
<a name="line-16"></a><span class='hs-comment'>--</span>
<a name="line-17"></a><span class='hs-comment'>-- This library is distributed in the hope that it will be useful,</span>
<a name="line-18"></a><span class='hs-comment'>-- but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="line-19"></a><span class='hs-comment'>-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="line-20"></a><span class='hs-comment'>-- Lesser General Public License for more details.</span>
<a name="line-21"></a><span class='hs-comment'>--</span>
<a name="line-22"></a><span class='hs-comment'>--</span>
<a name="line-23"></a><span class='hs-comment'>-- |</span>
<a name="line-24"></a><span class='hs-comment'>-- Maintainer : gtk2hs-users@lists.sourceforge.net</span>
<a name="line-25"></a><span class='hs-comment'>-- Stability : provisional</span>
<a name="line-26"></a><span class='hs-comment'>-- Portability : portable (depends on GHC)</span>
<a name="line-27"></a><span class='hs-comment'>--</span>
<a name="line-28"></a><span class='hs-comment'>-- Functions to run the rendering pipeline.</span>
<a name="line-29"></a><span class='hs-comment'>--</span>
<a name="line-30"></a><span class='hs-comment'>-- * This module provides elementary rendering functions. For a simpler</span>
<a name="line-31"></a><span class='hs-comment'>-- interface, consider using 'PangoLayout's.</span>
<a name="line-32"></a><span class='hs-comment'>--</span>
<a name="line-33"></a><span class='hs-comment'>-- * The Pango rendering pipeline takes a string of Unicode characters,</span>
<a name="line-34"></a><span class='hs-comment'>-- divides them into sequences of letters that have the same characteristics</span>
<a name="line-35"></a><span class='hs-comment'>-- such as font, size, color, etc. Such a sequence is called 'PangoItem'.</span>
<a name="line-36"></a><span class='hs-comment'>-- Each 'PangoItem' is then converted into one 'GlyphItem', that is</span>
<a name="line-37"></a><span class='hs-comment'>-- an actual sequence of glyphs,</span>
<a name="line-38"></a><span class='hs-comment'>-- where several characters might be turned into legatures or clusters,</span>
<a name="line-39"></a><span class='hs-comment'>-- e.g. an \"e\" and an accent modifier are turned into a single glyph. These</span>
<a name="line-40"></a><span class='hs-comment'>-- 'GlyphItem's can then be rendered onto the output device with functions</span>
<a name="line-41"></a><span class='hs-comment'>-- such as 'Graphics.Rendering.Cairo.cairoShowGlyphString'.</span>
<a name="line-42"></a><span class='hs-comment'>--</span>
<a name="line-43"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Pango</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span> <span class='hs-layout'>(</span>
<a name="line-44"></a> <span class='hs-comment'>-- * 'PangoItem': Partition text into units with similar attributes.</span>
<a name="line-45"></a> <span class='hs-conid'>PangoItem</span><span class='hs-layout'>,</span>
<a name="line-46"></a> <span class='hs-varid'>pangoItemize</span><span class='hs-layout'>,</span>
<a name="line-47"></a> <span class='hs-varid'>pangoItemGetFontMetrics</span><span class='hs-layout'>,</span>
<a name="line-48"></a> <span class='hs-varid'>pangoItemGetFont</span><span class='hs-layout'>,</span>
<a name="line-49"></a> <span class='hs-varid'>pangoItemGetLanguage</span><span class='hs-layout'>,</span>
<a name="line-50"></a>
<a name="line-51"></a> <span class='hs-comment'>-- * 'GlyphItem': Turn text segments into glyph sequences.</span>
<a name="line-52"></a> <span class='hs-conid'>GlyphItem</span><span class='hs-layout'>,</span>
<a name="line-53"></a> <span class='hs-varid'>pangoShape</span><span class='hs-layout'>,</span>
<a name="line-54"></a> <span class='hs-varid'>glyphItemExtents</span><span class='hs-layout'>,</span>
<a name="line-55"></a> <span class='hs-varid'>glyphItemExtentsRange</span><span class='hs-layout'>,</span>
<a name="line-56"></a> <span class='hs-varid'>glyphItemIndexToX</span><span class='hs-layout'>,</span>
<a name="line-57"></a> <span class='hs-varid'>glyphItemXToIndex</span><span class='hs-layout'>,</span>
<a name="line-58"></a> <span class='hs-varid'>glyphItemGetLogicalWidths</span><span class='hs-layout'>,</span>
<a name="line-59"></a>
<a name="line-60"></a> <span class='hs-varid'>glyphItemSplit</span>
<a name="line-61"></a>
<a name="line-62"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-63"></a>
<a name="line-64"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Glib</span><span class='hs-varop'>.</span><span class='hs-conid'>FFI</span>
<a name="line-65"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Pango</span><span class='hs-varop'>.</span><span class='hs-conid'>Structs</span> <span class='hs-layout'>(</span> <span class='hs-varid'>pangoItemRawAnalysis</span><span class='hs-layout'>,</span> <span class='hs-varid'>intToPu</span><span class='hs-layout'>,</span>
<a name="line-66"></a> <span class='hs-varid'>pangoItemGetFont</span><span class='hs-layout'>,</span> <span class='hs-varid'>pangoItemGetLanguage</span><span class='hs-layout'>)</span>
<a name="line-67"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Pango</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-layout'>(</span><span class='hs-conid'>PangoContext</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>Font</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-68"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Pango</span><span class='hs-varop'>.</span><span class='hs-conid'>BasicTypes</span>
<a name="line-69"></a><span class='hs-comment'>{-# LINE 68 "./Graphics/Rendering/Pango/Rendering.chs" #-}</span>
<a name="line-70"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Pango</span><span class='hs-varop'>.</span><span class='hs-conid'>Enums</span>
<a name="line-71"></a><span class='hs-comment'>{-# LINE 69 "./Graphics/Rendering/Pango/Rendering.chs" #-}</span>
<a name="line-72"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Pango</span><span class='hs-varop'>.</span><span class='hs-conid'>Attributes</span>
<a name="line-73"></a><span class='hs-comment'>{-# LINE 70 "./Graphics/Rendering/Pango/Rendering.chs" #-}</span>
<a name="line-74"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Pango</span><span class='hs-varop'>.</span><span class='hs-conid'>GlyphStorage</span>
<a name="line-75"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Glib</span><span class='hs-varop'>.</span><span class='hs-conid'>GList</span>
<a name="line-76"></a><span class='hs-comment'>{-# LINE 72 "./Graphics/Rendering/Pango/Rendering.chs" #-}</span>
<a name="line-77"></a>
<a name="line-78"></a>
<a name="line-79"></a><span class='hs-comment'>{-# LINE 74 "./Graphics/Rendering/Pango/Rendering.chs" #-}</span>
<a name="line-80"></a>
<a name="line-81"></a><a name="pangoItemize"></a><span class='hs-comment'>-- | Turn a string into a sequence of glyphs.</span>
<a name="line-82"></a><span class='hs-comment'>--</span>
<a name="line-83"></a><span class='hs-comment'>-- * Partitions the input string into segments with the same text direction</span>
<a name="line-84"></a><span class='hs-comment'>-- and shaping engine. The generated list of items will be in logical order</span>
<a name="line-85"></a><span class='hs-comment'>-- (the start offsets of the items are ascending).</span>
<a name="line-86"></a><span class='hs-comment'>--</span>
<a name="line-87"></a><span class='hs-definition'>pangoItemize</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PangoContext</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>PangoAttribute</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>PangoItem</span><span class='hs-keyglyph'>]</span>
<a name="line-88"></a><span class='hs-definition'>pangoItemize</span> <span class='hs-varid'>pc</span> <span class='hs-varid'>str</span> <span class='hs-varid'>attrs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-89"></a> <span class='hs-varid'>ps</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>makeNewPangoString</span> <span class='hs-varid'>str</span>
<a name="line-90"></a> <span class='hs-varid'>withAttrList</span> <span class='hs-varid'>ps</span> <span class='hs-varid'>attrs</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>alPtr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-91"></a> <span class='hs-varid'>glist</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>withPangoString</span> <span class='hs-varid'>ps</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-varid'>l</span> <span class='hs-varid'>strPtr</span> <span class='hs-keyglyph'>-></span>
<a name="line-92"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-conid'>PangoContext</span> <span class='hs-varid'>arg1</span><span class='hs-layout'>)</span> <span class='hs-varid'>arg2</span> <span class='hs-varid'>arg3</span> <span class='hs-varid'>arg4</span> <span class='hs-varid'>arg5</span> <span class='hs-varid'>arg6</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>arg1</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>argPtr1</span> <span class='hs-keyglyph'>-></span><span class='hs-varid'>pango_itemize</span> <span class='hs-varid'>argPtr1</span> <span class='hs-varid'>arg2</span> <span class='hs-varid'>arg3</span> <span class='hs-varid'>arg4</span> <span class='hs-varid'>arg5</span> <span class='hs-varid'>arg6</span><span class='hs-layout'>)</span> <span class='hs-varid'>pc</span> <span class='hs-varid'>strPtr</span> <span class='hs-num'>0</span> <span class='hs-varid'>l</span> <span class='hs-varid'>alPtr</span> <span class='hs-varid'>nullPtr</span>
<a name="line-93"></a> <span class='hs-varid'>piPtrs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fromGList</span> <span class='hs-varid'>glist</span>
<a name="line-94"></a> <span class='hs-varid'>piRaws</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>makeNewPangoItemRaw</span> <span class='hs-varid'>piPtrs</span>
<a name="line-95"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-conid'>PangoItem</span> <span class='hs-varid'>ps</span><span class='hs-layout'>)</span> <span class='hs-varid'>piRaws</span><span class='hs-layout'>)</span>
<a name="line-96"></a>
<a name="line-97"></a>
<a name="line-98"></a><a name="pangoItemGetFontMetrics"></a><span class='hs-comment'>-- | Retrieve the metrics of the font that was chosen to break the given</span>
<a name="line-99"></a><span class='hs-comment'>-- 'PangoItem'.</span>
<a name="line-100"></a><span class='hs-comment'>--</span>
<a name="line-101"></a><span class='hs-definition'>pangoItemGetFontMetrics</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PangoItem</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>FontMetrics</span>
<a name="line-102"></a><span class='hs-definition'>pangoItemGetFontMetrics</span> <span class='hs-varid'>pi</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-103"></a> <span class='hs-varid'>font</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pangoItemGetFont</span> <span class='hs-varid'>pi</span>
<a name="line-104"></a> <span class='hs-varid'>lang</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pangoItemGetLanguage</span> <span class='hs-varid'>pi</span>
<a name="line-105"></a> <span class='hs-varid'>mPtr</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-conid'>Font</span> <span class='hs-varid'>arg1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Language</span> <span class='hs-varid'>arg2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>arg1</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>argPtr1</span> <span class='hs-keyglyph'>-></span><span class='hs-varid'>pango_font_get_metrics</span> <span class='hs-varid'>argPtr1</span> <span class='hs-varid'>arg2</span><span class='hs-layout'>)</span> <span class='hs-varid'>font</span> <span class='hs-varid'>lang</span>
<a name="line-106"></a> <span class='hs-varid'>ascent</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pango_font_metrics_get_ascent</span> <span class='hs-varid'>mPtr</span>
<a name="line-107"></a> <span class='hs-varid'>descent</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pango_font_metrics_get_descent</span> <span class='hs-varid'>mPtr</span>
<a name="line-108"></a> <span class='hs-varid'>approximate_char_width</span> <span class='hs-keyglyph'><-</span>
<a name="line-109"></a> <span class='hs-varid'>pango_font_metrics_get_approximate_char_width</span> <span class='hs-varid'>mPtr</span>
<a name="line-110"></a> <span class='hs-varid'>approximate_digit_width</span> <span class='hs-keyglyph'><-</span>
<a name="line-111"></a> <span class='hs-varid'>pango_font_metrics_get_approximate_digit_width</span> <span class='hs-varid'>mPtr</span>
<a name="line-112"></a>
<a name="line-113"></a> <span class='hs-varid'>underline_position</span> <span class='hs-keyglyph'><-</span>
<a name="line-114"></a> <span class='hs-varid'>pango_font_metrics_get_underline_position</span> <span class='hs-varid'>mPtr</span>
<a name="line-115"></a> <span class='hs-varid'>underline_thickness</span> <span class='hs-keyglyph'><-</span>
<a name="line-116"></a> <span class='hs-varid'>pango_font_metrics_get_underline_thickness</span> <span class='hs-varid'>mPtr</span>
<a name="line-117"></a> <span class='hs-varid'>strikethrough_position</span> <span class='hs-keyglyph'><-</span>
<a name="line-118"></a> <span class='hs-varid'>pango_font_metrics_get_strikethrough_position</span> <span class='hs-varid'>mPtr</span>
<a name="line-119"></a> <span class='hs-varid'>strikethrough_thickness</span> <span class='hs-keyglyph'><-</span>
<a name="line-120"></a> <span class='hs-varid'>pango_font_metrics_get_strikethrough_thickness</span> <span class='hs-varid'>mPtr</span>
<a name="line-121"></a>
<a name="line-122"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>FontMetrics</span>
<a name="line-123"></a> <span class='hs-layout'>(</span><span class='hs-varid'>intToPu</span> <span class='hs-varid'>ascent</span><span class='hs-layout'>)</span>
<a name="line-124"></a> <span class='hs-layout'>(</span><span class='hs-varid'>intToPu</span> <span class='hs-varid'>descent</span><span class='hs-layout'>)</span>
<a name="line-125"></a> <span class='hs-layout'>(</span><span class='hs-varid'>intToPu</span> <span class='hs-varid'>approximate_char_width</span><span class='hs-layout'>)</span>
<a name="line-126"></a> <span class='hs-layout'>(</span><span class='hs-varid'>intToPu</span> <span class='hs-varid'>approximate_digit_width</span><span class='hs-layout'>)</span>
<a name="line-127"></a>
<a name="line-128"></a> <span class='hs-layout'>(</span><span class='hs-varid'>intToPu</span> <span class='hs-varid'>underline_position</span><span class='hs-layout'>)</span>
<a name="line-129"></a> <span class='hs-layout'>(</span><span class='hs-varid'>intToPu</span> <span class='hs-varid'>underline_thickness</span><span class='hs-layout'>)</span>
<a name="line-130"></a> <span class='hs-layout'>(</span><span class='hs-varid'>intToPu</span> <span class='hs-varid'>strikethrough_position</span><span class='hs-layout'>)</span>
<a name="line-131"></a> <span class='hs-layout'>(</span><span class='hs-varid'>intToPu</span> <span class='hs-varid'>strikethrough_thickness</span><span class='hs-layout'>)</span>
<a name="line-132"></a>
<a name="line-133"></a> <span class='hs-layout'>)</span>
<a name="line-134"></a>
<a name="line-135"></a><a name="pangoShape"></a><span class='hs-comment'>-- | Turn a 'PangoItem' into a 'GlyphItem'.</span>
<a name="line-136"></a><span class='hs-comment'>--</span>
<a name="line-137"></a><span class='hs-comment'>-- * Turns a 'PangoItem', that is, sequence of characters with the same</span>
<a name="line-138"></a><span class='hs-comment'>-- attributes such as font, size and color, into a 'GlyphItem' which</span>
<a name="line-139"></a><span class='hs-comment'>-- contains the graphical representation of these characters. 'GlyphItem's</span>
<a name="line-140"></a><span class='hs-comment'>-- can be rendered directly (and several times) onto screens.</span>
<a name="line-141"></a><span class='hs-comment'>--</span>
<a name="line-142"></a><span class='hs-definition'>pangoShape</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PangoItem</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>GlyphItem</span>
<a name="line-143"></a><span class='hs-definition'>pangoShape</span> <span class='hs-varid'>pi</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>PangoItem</span> <span class='hs-varid'>ps</span> <span class='hs-varid'>pir</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-144"></a> <span class='hs-varid'>withPangoString</span> <span class='hs-varid'>ps</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-keyword'>_</span> <span class='hs-varid'>l</span> <span class='hs-varid'>strPtr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>withPangoItemRaw</span> <span class='hs-varid'>pir</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>pirPtr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-145"></a> <span class='hs-varid'>gsPtr</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>pango_glyph_string_new</span>
<a name="line-146"></a><span class='hs-comment'>{-# LINE 140 "./Graphics/Rendering/Pango/Rendering.chs" #-}</span>
<a name="line-147"></a> <span class='hs-varid'>gs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>makeNewGlyphStringRaw</span> <span class='hs-varid'>gsPtr</span>
<a name="line-148"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>arg1</span> <span class='hs-varid'>arg2</span> <span class='hs-varid'>arg3</span> <span class='hs-layout'>(</span><span class='hs-conid'>GlyphStringRaw</span> <span class='hs-varid'>arg4</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>arg4</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>argPtr4</span> <span class='hs-keyglyph'>-></span><span class='hs-varid'>pango_shape</span> <span class='hs-varid'>arg1</span> <span class='hs-varid'>arg2</span> <span class='hs-varid'>arg3</span> <span class='hs-varid'>argPtr4</span><span class='hs-layout'>)</span> <span class='hs-varid'>strPtr</span> <span class='hs-varid'>l</span> <span class='hs-layout'>(</span><span class='hs-varid'>pangoItemRawAnalysis</span> <span class='hs-varid'>pirPtr</span><span class='hs-layout'>)</span> <span class='hs-varid'>gs</span>
<a name="line-149"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>GlyphItem</span> <span class='hs-varid'>pi</span> <span class='hs-varid'>gs</span><span class='hs-layout'>)</span>
<a name="line-150"></a>
<a name="line-151"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"pango_itemize"</span>
<a name="line-152"></a> <span class='hs-varid'>pango_itemize</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>PangoContext</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>CChar</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-153"></a>
<a name="line-154"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"pango_font_get_metrics"</span>
<a name="line-155"></a> <span class='hs-varid'>pango_font_get_metrics</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Font</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Language</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-156"></a>
<a name="line-157"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"pango_font_metrics_get_ascent"</span>
<a name="line-158"></a> <span class='hs-varid'>pango_font_metrics_get_ascent</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-159"></a>
<a name="line-160"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"pango_font_metrics_get_descent"</span>
<a name="line-161"></a> <span class='hs-varid'>pango_font_metrics_get_descent</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-162"></a>
<a name="line-163"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"pango_font_metrics_get_approximate_char_width"</span>
<a name="line-164"></a> <span class='hs-varid'>pango_font_metrics_get_approximate_char_width</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-165"></a>
<a name="line-166"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"pango_font_metrics_get_approximate_digit_width"</span>
<a name="line-167"></a> <span class='hs-varid'>pango_font_metrics_get_approximate_digit_width</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-168"></a>
<a name="line-169"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"pango_font_metrics_get_underline_position"</span>
<a name="line-170"></a> <span class='hs-varid'>pango_font_metrics_get_underline_position</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-171"></a>
<a name="line-172"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"pango_font_metrics_get_underline_thickness"</span>
<a name="line-173"></a> <span class='hs-varid'>pango_font_metrics_get_underline_thickness</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-174"></a>
<a name="line-175"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"pango_font_metrics_get_strikethrough_position"</span>
<a name="line-176"></a> <span class='hs-varid'>pango_font_metrics_get_strikethrough_position</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-177"></a>
<a name="line-178"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"pango_font_metrics_get_strikethrough_thickness"</span>
<a name="line-179"></a> <span class='hs-varid'>pango_font_metrics_get_strikethrough_thickness</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-180"></a>
<a name="line-181"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"pango_glyph_string_new"</span>
<a name="line-182"></a> <span class='hs-varid'>pango_glyph_string_new</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>GlyphStringRaw</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-183"></a>
<a name="line-184"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"pango_shape"</span>
<a name="line-185"></a> <span class='hs-varid'>pango_shape</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>CChar</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>GlyphStringRaw</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
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