Mercurial > hg > release > icedtea7-forest-2.3 > jdk
view src/share/native/sun/font/layout/CharSubstitutionFilter.h @ 6409:47e0b80c2703
8024530: Enhance font process resilience
Reviewed-by: mschoene, bae, srl, prr
author | prr |
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date | Sun, 20 Oct 2013 06:12:08 -0700 |
parents | 00cd9dc3c2b5 |
children |
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/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ /* * * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved * */ #ifndef __CHARSUBSTITUTIONFILTER_H #define __CHARSUBSTITUTIONFILTER_H #include "LETypes.h" #include "LEGlyphFilter.h" U_NAMESPACE_BEGIN class LEFontInstance; /** * This filter is used by character-based GSUB processors. It * accepts only those characters which the given font can display. * * Note: Implementation is in ArabicLayoutEngine.cpp * * @internal */ class CharSubstitutionFilter : public UMemory, public LEGlyphFilter { private: /** * Holds the font which is used to test the characters. * * @internal */ const LEFontInstance *fFontInstance; /** * The copy constructor. Not allowed! * * @internal */ CharSubstitutionFilter(const CharSubstitutionFilter &other); // forbid copying of this class /** * The replacement operator. Not allowed! * * @internal */ CharSubstitutionFilter &operator=(const CharSubstitutionFilter &other); // forbid copying of this class public: /** * The constructor. * * @param fontInstance - the font to use to test the characters. * * @internal */ CharSubstitutionFilter(const LEFontInstance *fontInstance); /** * The destructor. * * @internal */ ~CharSubstitutionFilter(); /** * This method is used to test if a particular * character can be displayed by the filter's * font. * * @param glyph - the Unicode character code to be tested * * @return TRUE if the filter's font can display this character. * * @internal */ le_bool accept(LEGlyphID glyph, LEErrorCode &success) const; }; U_NAMESPACE_END #endif