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Diffstat (limited to 'vcl/source/glyphs/graphite_features.cxx')
-rw-r--r--vcl/source/glyphs/graphite_features.cxx288
1 files changed, 288 insertions, 0 deletions
diff --git a/vcl/source/glyphs/graphite_features.cxx b/vcl/source/glyphs/graphite_features.cxx
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+++ b/vcl/source/glyphs/graphite_features.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+// Description:
+// Parse a string of features specified as & separated pairs.
+// e.g.
+// 1001=1&2002=2&fav1=0
+
+// MARKER(update_precomp.py): autogen include statement, do not remove
+#include "precompiled_vcl.hxx"
+
+#include <sal/types.h>
+
+#ifdef WNT
+#include <windows.h>
+#endif
+
+#include <vcl/graphite_features.hxx>
+
+using namespace grutils;
+// These mustn't conflict with font name lists which use ; and ,
+const char GrFeatureParser::FEAT_PREFIX = ':';
+const char GrFeatureParser::FEAT_SEPARATOR = '&';
+const char GrFeatureParser::FEAT_ID_VALUE_SEPARATOR = '=';
+
+GrFeatureParser::GrFeatureParser(const gr_face * pFace, const ::rtl::OString lang)
+ : mnNumSettings(0), mbErrors(false), mpSettings(NULL)
+{
+ maLang.label[0] = maLang.label[1] = maLang.label[2] = maLang.label[3] = '\0';
+ setLang(pFace, lang);
+}
+
+GrFeatureParser::GrFeatureParser(const gr_face * pFace, const ::rtl::OString features, const ::rtl::OString lang)
+ : mnNumSettings(0), mbErrors(false), mpSettings(NULL)
+{
+ sal_Int32 nEquals = 0;
+ sal_Int32 nFeatEnd = 0;
+ sal_Int32 pos = 0;
+ maLang.num = 0u;
+ setLang(pFace, lang);
+ while ((pos < features.getLength()) && (mnNumSettings < MAX_FEATURES))
+ {
+ nEquals = features.indexOf(FEAT_ID_VALUE_SEPARATOR, pos);
+ if (nEquals == -1)
+ {
+ mbErrors = true;
+ break;
+ }
+ // check for a lang=xxx specification
+ const ::rtl::OString aLangPrefix("lang");
+ if (features.match(aLangPrefix, pos ))
+ {
+ pos = nEquals + 1;
+ nFeatEnd = features.indexOf(FEAT_SEPARATOR, pos);
+ if (nFeatEnd == -1)
+ {
+ nFeatEnd = features.getLength();
+ }
+ if (nFeatEnd - pos > 3)
+ mbErrors = true;
+ else
+ {
+ FeatId aLang = maLang;
+ aLang.num = 0;
+ for (sal_Int32 i = pos; i < nFeatEnd; i++)
+ aLang.label[i-pos] = features[i];
+
+ //ext_std::pair<gr::LanguageIterator,gr::LanguageIterator> aSupported
+ // = font.getSupportedLanguages();
+ //gr::LanguageIterator iL = aSupported.first;
+ unsigned short i = 0;
+ for (; i < gr_face_n_languages(pFace); i++)
+ {
+ gr_uint32 nFaceLang = gr_face_lang_by_index(pFace, i);
+ FeatId aSupportedLang;
+ aSupportedLang.num = nFaceLang;
+#ifdef __BIG_ENDIAN__
+ // here we only expect full 3 letter codes
+ if (aLang.label[0] == aSupportedLang.label[0] &&
+ aLang.label[1] == aSupportedLang.label[1] &&
+ aLang.label[2] == aSupportedLang.label[2] &&
+ aLang.label[3] == aSupportedLang.label[3])
+#else
+ if (aLang.label[0] == aSupportedLang.label[3] &&
+ aLang.label[1] == aSupportedLang.label[2] &&
+ aLang.label[2] == aSupportedLang.label[1] &&
+ aLang.label[3] == aSupportedLang.label[0])
+#endif
+ {
+ maLang = aSupportedLang;
+ break;
+ }
+ }
+ if (i == gr_face_n_languages(pFace)) mbErrors = true;
+ else
+ {
+ mnHash = maLang.num;
+ mpSettings = gr_face_featureval_for_lang(pFace, maLang.num);
+ }
+ }
+ }
+ else
+ {
+ sal_uInt32 featId = 0;
+ if (isCharId(features, pos, nEquals - pos))
+ {
+ featId = getCharId(features, pos, nEquals - pos);
+ }
+ else
+ {
+ featId = getIntValue(features, pos, nEquals - pos);
+ }
+ const gr_feature_ref * pFref = gr_face_find_fref(pFace, featId);
+ pos = nEquals + 1;
+ nFeatEnd = features.indexOf(FEAT_SEPARATOR, pos);
+ if (nFeatEnd == -1)
+ {
+ nFeatEnd = features.getLength();
+ }
+ sal_Int16 featValue = 0;
+ featValue = getIntValue(features, pos, nFeatEnd - pos);
+ if (pFref && gr_fref_set_feature_value(pFref, featValue, mpSettings))
+ {
+ mnHash = (mnHash << 16) ^ ((featId << 8) | featValue);
+ mnNumSettings++;
+ }
+ else
+ mbErrors = true;
+ }
+ pos = nFeatEnd + 1;
+ }
+}
+
+void GrFeatureParser::setLang(const gr_face * pFace, const rtl::OString & lang)
+{
+ FeatId aLang;
+ aLang.num = 0;
+ if (lang.getLength() >= 2)
+ {
+ for (sal_Int32 i = 0; i < lang.getLength() && i < 3; i++)
+ {
+ if (lang[i] == '-') break;
+ aLang.label[i] = lang[i];
+ }
+ unsigned short i = 0;
+ for (; i < gr_face_n_languages(pFace); i++)
+ {
+ gr_uint32 nFaceLang = gr_face_lang_by_index(pFace, i);
+ FeatId aSupportedLang;
+ aSupportedLang.num = nFaceLang;
+ // here we only expect full 2 & 3 letter codes
+#ifdef __BIG_ENDIAN__
+ if (aLang.label[0] == aSupportedLang.label[0] &&
+ aLang.label[1] == aSupportedLang.label[1] &&
+ aLang.label[2] == aSupportedLang.label[2] &&
+ aLang.label[3] == aSupportedLang.label[3])
+#else
+ if (aLang.label[0] == aSupportedLang.label[3] &&
+ aLang.label[1] == aSupportedLang.label[2] &&
+ aLang.label[2] == aSupportedLang.label[1] &&
+ aLang.label[3] == aSupportedLang.label[0])
+#endif
+ {
+ maLang = aSupportedLang;
+ break;
+ }
+ }
+ if (i != gr_face_n_languages(pFace))
+ {
+ if (mpSettings)
+ gr_featureval_destroy(mpSettings);
+ mpSettings = gr_face_featureval_for_lang(pFace, maLang.num);
+ mnHash = maLang.num;
+ }
+ }
+ if (!mpSettings)
+ mpSettings = gr_face_featureval_for_lang(pFace, 0);
+}
+
+GrFeatureParser::~GrFeatureParser()
+{
+ if (mpSettings)
+ {
+ gr_featureval_destroy(mpSettings);
+ mpSettings = NULL;
+ }
+}
+
+bool GrFeatureParser::isCharId(const rtl::OString & id, size_t offset, size_t length)
+{
+ if (length > 4) return false;
+ for (size_t i = 0; i < length; i++)
+ {
+ if (i > 0 && id[offset+i] == '\0') continue;
+ if ((id[offset+i] < 0x20) || (id[offset+i] < 0))
+ return false;
+ if (i==0 && (id[offset+i] < 0x41))
+ return false;
+ }
+ return true;
+}
+
+gr_uint32 GrFeatureParser::getCharId(const rtl::OString & id, size_t offset, size_t length)
+{
+ FeatId charId;
+ charId.num = 0;
+#ifdef WORDS_BIGENDIAN
+ for (size_t i = 0; i < length; i++)
+ {
+ charId.label[i] = id[offset+i];
+ }
+#else
+ for (size_t i = 0; i < length; i++)
+ {
+ charId.label[3-i] = id[offset+i];
+ }
+#endif
+ return charId.num;
+}
+
+short GrFeatureParser::getIntValue(const rtl::OString & id, size_t offset, size_t length)
+{
+ short value = 0;
+ int sign = 1;
+ for (size_t i = 0; i < length; i++)
+ {
+ switch (id[offset + i])
+ {
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ value *= 10;
+ if (sign < 0)
+ {
+ value = -(id[offset + i] - '0');
+ sign = 1;
+ }
+ value += (id[offset + i] - '0');
+ break;
+ case '-':
+ if (i == 0)
+ sign = -1;
+ else
+ {
+ mbErrors = true;
+ break;
+ }
+ default:
+ mbErrors = true;
+ break;
+ }
+ }
+ return value;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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