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icu-doc-4.4-2.1mdv2010.2.i586.rpm

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<h1>LayoutEngine.h</h1><a href="LayoutEngine_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 
<a name="l00002"></a>00002 <span class="comment">/*</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * (C) Copyright IBM Corp. 1998-2008 - All Rights Reserved</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> */</span>
<a name="l00007"></a>00007 
<a name="l00008"></a>00008 <span class="preprocessor">#ifndef __LAYOUTENGINE_H</span>
<a name="l00009"></a>00009 <span class="preprocessor"></span><span class="preprocessor">#define __LAYOUTENGINE_H</span>
<a name="l00010"></a>00010 <span class="preprocessor"></span>
<a name="l00011"></a>00011 <span class="preprocessor">#include &quot;<a class="code" href="LETypes_8h.html" title="C API: Basic definitions for the ICU LayoutEngine.">LETypes.h</a>&quot;</span>
<a name="l00012"></a>00012 
<a name="l00018"></a>00018 <a class="code" href="uversion_8h.html#a7d9374e037299886d4192b763b4c5e8b" title="This is used to begin a declaration of a public ICU C++ API.">U_NAMESPACE_BEGIN</a>
<a name="l00019"></a>00019 
<a name="l00020"></a>00020 <span class="keyword">class </span><a class="code" href="classLEFontInstance.html" title="This is a virtual base class that serves as the interface between a LayoutEngine...">LEFontInstance</a>;
<a name="l00021"></a>00021 <span class="keyword">class </span>LEGlyphFilter;
<a name="l00022"></a>00022 <span class="keyword">class </span><a class="code" href="classLEGlyphStorage.html" title="This class encapsulates the per-glyph storage used by the ICU LayoutEngine.">LEGlyphStorage</a>;
<a name="l00023"></a>00023 
<a name="l00067"></a><a class="code" href="classLayoutEngine.html">00067</a> <span class="keyword">class </span><a class="code" href="utypes_8h.html#a623f81640d6092d9141a1d4d24ccaffc" title="Set to export library symbols from inside the layout engine library, and to import...">U_LAYOUT_API</a> <a class="code" href="classLayoutEngine.html" title="This is a virtual base class used to do complex text layout.">LayoutEngine</a> : <span class="keyword">public</span> <a class="code" href="classUObject.html" title="UObject is the common ICU &amp;quot;boilerplate&amp;quot; class.">UObject</a> {
<a name="l00068"></a>00068 <span class="keyword">protected</span>:
<a name="l00074"></a><a class="code" href="classLayoutEngine.html#af143b52b77689d4402a9ca6a400f84d4">00074</a>     <a class="code" href="classLEGlyphStorage.html" title="This class encapsulates the per-glyph storage used by the ICU LayoutEngine.">LEGlyphStorage</a> *fGlyphStorage;
<a name="l00075"></a>00075 
<a name="l00083"></a><a class="code" href="classLayoutEngine.html#a09445420f49f99a22773bce90419a4cd">00083</a>     <span class="keyword">const</span> <a class="code" href="classLEFontInstance.html" title="This is a virtual base class that serves as the interface between a LayoutEngine...">LEFontInstance</a> *fFontInstance;
<a name="l00084"></a>00084 
<a name="l00092"></a><a class="code" href="classLayoutEngine.html#aed10d9cec637cf12e36f11462dd6f36d">00092</a>     <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> fScriptCode;
<a name="l00093"></a>00093 
<a name="l00101"></a><a class="code" href="classLayoutEngine.html#a0460d81c3330be246b29ae41d788215b">00101</a>     <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> fLanguageCode;
<a name="l00102"></a>00102 
<a name="l00108"></a><a class="code" href="classLayoutEngine.html#a458289a246aedacb18a5025802cb9666">00108</a>     <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> fTypoFlags;
<a name="l00109"></a>00109 
<a name="l00116"></a><a class="code" href="classLayoutEngine.html#aa59dcfed5649c96d5e813ff5acbb0f74">00116</a>     <a class="code" href="LETypes_8h.html#a4b77bc254d0e88fdabffde9c03e6728f" title="A type used for boolean values.">le_bool</a> fFilterZeroWidth;
<a name="l00117"></a>00117 
<a name="l00134"></a>00134     <a class="code" href="classLayoutEngine.html" title="This is a virtual base class used to do complex text layout.">LayoutEngine</a>(<span class="keyword">const</span> <a class="code" href="classLEFontInstance.html" title="This is a virtual base class that serves as the interface between a LayoutEngine...">LEFontInstance</a> *fontInstance, 
<a name="l00135"></a>00135                  <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> scriptCode, 
<a name="l00136"></a>00136                  <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> languageCode, 
<a name="l00137"></a>00137                  <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> typoFlags,
<a name="l00138"></a>00138                  <a class="code" href="LETypes_8h.html#a2f75d3bb5abf7f0a71adbf00826e1934" title="Error codes returned by the LayoutEngine.">LEErrorCode</a> &amp;success);
<a name="l00139"></a>00139 
<a name="l00147"></a>00147     <a class="code" href="classLayoutEngine.html" title="This is a virtual base class used to do complex text layout.">LayoutEngine</a>();
<a name="l00148"></a>00148 
<a name="l00171"></a>00171     <span class="keyword">virtual</span> <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> characterProcessing(<span class="keyword">const</span> <a class="code" href="LETypes_8h.html#a903cb689308cdef41500411d096a2c2d" title="Used to represent 16-bit Unicode code points.">LEUnicode</a> chars[], <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> offset, <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> count, <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> max, <a class="code" href="LETypes_8h.html#a4b77bc254d0e88fdabffde9c03e6728f" title="A type used for boolean values.">le_bool</a> rightToLeft,
<a name="l00172"></a>00172             <a class="code" href="LETypes_8h.html#a903cb689308cdef41500411d096a2c2d" title="Used to represent 16-bit Unicode code points.">LEUnicode</a> *&amp;outChars, <a class="code" href="classLEGlyphStorage.html" title="This class encapsulates the per-glyph storage used by the ICU LayoutEngine.">LEGlyphStorage</a> &amp;glyphStorage, <a class="code" href="LETypes_8h.html#a2f75d3bb5abf7f0a71adbf00826e1934" title="Error codes returned by the LayoutEngine.">LEErrorCode</a> &amp;success);
<a name="l00173"></a>00173 
<a name="l00200"></a>00200     <span class="keyword">virtual</span> <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> computeGlyphs(<span class="keyword">const</span> <a class="code" href="LETypes_8h.html#a903cb689308cdef41500411d096a2c2d" title="Used to represent 16-bit Unicode code points.">LEUnicode</a> chars[], <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> offset, <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> count, <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> max, <a class="code" href="LETypes_8h.html#a4b77bc254d0e88fdabffde9c03e6728f" title="A type used for boolean values.">le_bool</a> rightToLeft, <a class="code" href="classLEGlyphStorage.html" title="This class encapsulates the per-glyph storage used by the ICU LayoutEngine.">LEGlyphStorage</a> &amp;glyphStorage, <a class="code" href="LETypes_8h.html#a2f75d3bb5abf7f0a71adbf00826e1934" title="Error codes returned by the LayoutEngine.">LEErrorCode</a> &amp;success);
<a name="l00201"></a>00201 
<a name="l00215"></a>00215     <span class="keyword">virtual</span> <span class="keywordtype">void</span> positionGlyphs(<a class="code" href="classLEGlyphStorage.html" title="This class encapsulates the per-glyph storage used by the ICU LayoutEngine.">LEGlyphStorage</a> &amp;glyphStorage, <span class="keywordtype">float</span> x, <span class="keywordtype">float</span> y, <a class="code" href="LETypes_8h.html#a2f75d3bb5abf7f0a71adbf00826e1934" title="Error codes returned by the LayoutEngine.">LEErrorCode</a> &amp;success);
<a name="l00216"></a>00216 
<a name="l00237"></a>00237     <span class="keyword">virtual</span> <span class="keywordtype">void</span> adjustGlyphPositions(<span class="keyword">const</span> <a class="code" href="LETypes_8h.html#a903cb689308cdef41500411d096a2c2d" title="Used to represent 16-bit Unicode code points.">LEUnicode</a> chars[], <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> offset, <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> count, <a class="code" href="LETypes_8h.html#a4b77bc254d0e88fdabffde9c03e6728f" title="A type used for boolean values.">le_bool</a> reverse, <a class="code" href="classLEGlyphStorage.html" title="This class encapsulates the per-glyph storage used by the ICU LayoutEngine.">LEGlyphStorage</a> &amp;glyphStorage, <a class="code" href="LETypes_8h.html#a2f75d3bb5abf7f0a71adbf00826e1934" title="Error codes returned by the LayoutEngine.">LEErrorCode</a> &amp;success);
<a name="l00238"></a>00238 
<a name="l00251"></a>00251     <span class="keyword">virtual</span> <span class="keyword">const</span> <span class="keywordtype">void</span> *getFontTable(<a class="code" href="LETypes_8h.html#a9e22a06bf2336b583b317287cb94fcfa" title="Used for four character tags.">LETag</a> tableTag) <span class="keyword">const</span>;
<a name="l00252"></a>00252 
<a name="l00278"></a>00278     <span class="keyword">virtual</span> <span class="keywordtype">void</span> mapCharsToGlyphs(<span class="keyword">const</span> <a class="code" href="LETypes_8h.html#a903cb689308cdef41500411d096a2c2d" title="Used to represent 16-bit Unicode code points.">LEUnicode</a> chars[], <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> offset, <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> count, <a class="code" href="LETypes_8h.html#a4b77bc254d0e88fdabffde9c03e6728f" title="A type used for boolean values.">le_bool</a> reverse, <a class="code" href="LETypes_8h.html#a4b77bc254d0e88fdabffde9c03e6728f" title="A type used for boolean values.">le_bool</a> mirror, <a class="code" href="classLEGlyphStorage.html" title="This class encapsulates the per-glyph storage used by the ICU LayoutEngine.">LEGlyphStorage</a> &amp;glyphStorage, <a class="code" href="LETypes_8h.html#a2f75d3bb5abf7f0a71adbf00826e1934" title="Error codes returned by the LayoutEngine.">LEErrorCode</a> &amp;success);
<a name="l00279"></a>00279 
<a name="l00292"></a>00292     <span class="keyword">static</span> <span class="keywordtype">void</span> adjustMarkGlyphs(<a class="code" href="classLEGlyphStorage.html" title="This class encapsulates the per-glyph storage used by the ICU LayoutEngine.">LEGlyphStorage</a> &amp;glyphStorage, LEGlyphFilter *markFilter, <a class="code" href="LETypes_8h.html#a2f75d3bb5abf7f0a71adbf00826e1934" title="Error codes returned by the LayoutEngine.">LEErrorCode</a> &amp;success);
<a name="l00293"></a>00293 
<a name="l00294"></a>00294 
<a name="l00313"></a>00313     <span class="keyword">static</span> <span class="keywordtype">void</span> adjustMarkGlyphs(<span class="keyword">const</span> <a class="code" href="LETypes_8h.html#a903cb689308cdef41500411d096a2c2d" title="Used to represent 16-bit Unicode code points.">LEUnicode</a> chars[], <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> charCount, <a class="code" href="LETypes_8h.html#a4b77bc254d0e88fdabffde9c03e6728f" title="A type used for boolean values.">le_bool</a> reverse, <a class="code" href="classLEGlyphStorage.html" title="This class encapsulates the per-glyph storage used by the ICU LayoutEngine.">LEGlyphStorage</a> &amp;glyphStorage, LEGlyphFilter *markFilter, <a class="code" href="LETypes_8h.html#a2f75d3bb5abf7f0a71adbf00826e1934" title="Error codes returned by the LayoutEngine.">LEErrorCode</a> &amp;success);
<a name="l00314"></a>00314 
<a name="l00315"></a>00315 
<a name="l00316"></a>00316 <span class="keyword">public</span>:
<a name="l00325"></a>00325     <span class="keyword">virtual</span> ~<a class="code" href="classLayoutEngine.html" title="This is a virtual base class used to do complex text layout.">LayoutEngine</a>();
<a name="l00326"></a>00326 
<a name="l00352"></a>00352     <span class="keyword">virtual</span> <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> layoutChars(<span class="keyword">const</span> <a class="code" href="LETypes_8h.html#a903cb689308cdef41500411d096a2c2d" title="Used to represent 16-bit Unicode code points.">LEUnicode</a> chars[], <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> offset, <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> count, <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> max, <a class="code" href="LETypes_8h.html#a4b77bc254d0e88fdabffde9c03e6728f" title="A type used for boolean values.">le_bool</a> rightToLeft, <span class="keywordtype">float</span> x, <span class="keywordtype">float</span> y, <a class="code" href="LETypes_8h.html#a2f75d3bb5abf7f0a71adbf00826e1934" title="Error codes returned by the LayoutEngine.">LEErrorCode</a> &amp;success);
<a name="l00353"></a>00353 
<a name="l00363"></a>00363     <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> getGlyphCount() <span class="keyword">const</span>;
<a name="l00364"></a>00364 
<a name="l00375"></a>00375     <span class="keywordtype">void</span> getGlyphs(<a class="code" href="LETypes_8h.html#ae440e077586bced1a0d1c534643ffc23" title="Used for glyph indices.">LEGlyphID</a> glyphs[], <a class="code" href="LETypes_8h.html#a2f75d3bb5abf7f0a71adbf00826e1934" title="Error codes returned by the LayoutEngine.">LEErrorCode</a> &amp;success) <span class="keyword">const</span>;
<a name="l00376"></a>00376 
<a name="l00389"></a>00389     <span class="keyword">virtual</span> <span class="keywordtype">void</span> getGlyphs(<a class="code" href="LETypes_8h.html#a8ed46f4fc717cf0a94de62efe109ecae" title="A type used for unsigned, 32-bit integers.">le_uint32</a> glyphs[], <a class="code" href="LETypes_8h.html#a8ed46f4fc717cf0a94de62efe109ecae" title="A type used for unsigned, 32-bit integers.">le_uint32</a> extraBits, <a class="code" href="LETypes_8h.html#a2f75d3bb5abf7f0a71adbf00826e1934" title="Error codes returned by the LayoutEngine.">LEErrorCode</a> &amp;success) <span class="keyword">const</span>;
<a name="l00390"></a>00390 
<a name="l00401"></a>00401     <span class="keywordtype">void</span> getCharIndices(<a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> charIndices[], <a class="code" href="LETypes_8h.html#a2f75d3bb5abf7f0a71adbf00826e1934" title="Error codes returned by the LayoutEngine.">LEErrorCode</a> &amp;success) <span class="keyword">const</span>;
<a name="l00402"></a>00402 
<a name="l00414"></a>00414     <span class="keywordtype">void</span> getCharIndices(<a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> charIndices[], <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> indexBase, <a class="code" href="LETypes_8h.html#a2f75d3bb5abf7f0a71adbf00826e1934" title="Error codes returned by the LayoutEngine.">LEErrorCode</a> &amp;success) <span class="keyword">const</span>;
<a name="l00415"></a>00415 
<a name="l00427"></a>00427     <span class="keywordtype">void</span> getGlyphPositions(<span class="keywordtype">float</span> positions[], <a class="code" href="LETypes_8h.html#a2f75d3bb5abf7f0a71adbf00826e1934" title="Error codes returned by the LayoutEngine.">LEErrorCode</a> &amp;success) <span class="keyword">const</span>;
<a name="l00428"></a>00428 
<a name="l00443"></a>00443     <span class="keywordtype">void</span> getGlyphPosition(<a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> glyphIndex, <span class="keywordtype">float</span> &amp;x, <span class="keywordtype">float</span> &amp;y, <a class="code" href="LETypes_8h.html#a2f75d3bb5abf7f0a71adbf00826e1934" title="Error codes returned by the LayoutEngine.">LEErrorCode</a> &amp;success) <span class="keyword">const</span>;
<a name="l00444"></a>00444 
<a name="l00452"></a>00452     <span class="keyword">virtual</span> <span class="keywordtype">void</span> reset();
<a name="l00453"></a>00453 
<a name="l00470"></a>00470     <span class="keyword">static</span> <a class="code" href="classLayoutEngine.html" title="This is a virtual base class used to do complex text layout.">LayoutEngine</a> *layoutEngineFactory(<span class="keyword">const</span> <a class="code" href="classLEFontInstance.html" title="This is a virtual base class that serves as the interface between a LayoutEngine...">LEFontInstance</a> *fontInstance, <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> scriptCode, <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> languageCode, <a class="code" href="LETypes_8h.html#a2f75d3bb5abf7f0a71adbf00826e1934" title="Error codes returned by the LayoutEngine.">LEErrorCode</a> &amp;success);
<a name="l00471"></a>00471 
<a name="l00476"></a>00476     <span class="keyword">static</span> <a class="code" href="classLayoutEngine.html" title="This is a virtual base class used to do complex text layout.">LayoutEngine</a> *layoutEngineFactory(<span class="keyword">const</span> <a class="code" href="classLEFontInstance.html" title="This is a virtual base class that serves as the interface between a LayoutEngine...">LEFontInstance</a> *fontInstance, <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> scriptCode, <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> languageCode, <a class="code" href="LETypes_8h.html#a3ae79f31399d76e3055d2a2745bd0d9a" title="A type used for signed, 32-bit integers.">le_int32</a> typo_flags, <a class="code" href="LETypes_8h.html#a2f75d3bb5abf7f0a71adbf00826e1934" title="Error codes returned by the LayoutEngine.">LEErrorCode</a> &amp;success);
<a name="l00477"></a>00477 
<a name="l00483"></a>00483     <span class="keyword">virtual</span> <a class="code" href="utypes_8h.html#a22af10545208a455a6e884008df48e9f" title="UClassID is used to identify classes without using RTTI, since RTTI is not yet supported...">UClassID</a> <a class="code" href="classUObject.html#a9b1acc95efd89cb86ec31f2dc947a262" title="ICU4C &amp;quot;poor man&amp;#39;s RTTI&amp;quot;, returns a UClassID for the actual ICU class...">getDynamicClassID</a>() <span class="keyword">const</span>;
<a name="l00484"></a>00484 
<a name="l00490"></a>00490     <span class="keyword">static</span> <a class="code" href="utypes_8h.html#a22af10545208a455a6e884008df48e9f" title="UClassID is used to identify classes without using RTTI, since RTTI is not yet supported...">UClassID</a> getStaticClassID();
<a name="l00491"></a>00491 
<a name="l00492"></a>00492 };
<a name="l00493"></a>00493 
<a name="l00494"></a>00494 <a class="code" href="uversion_8h.html#a3da1f00f3b02976ac53c014a3e4c0933" title="This is used to end a declaration of a public ICU C++ API.">U_NAMESPACE_END</a>
<a name="l00495"></a>00495 <span class="preprocessor">#endif</span>
<a name="l00496"></a>00496 <span class="preprocessor"></span>
</pre></div></div>
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