diff options
Diffstat (limited to 'Build/source/libs/icu-xetex/layout/ThaiLayoutEngine.cpp')
-rw-r--r-- | Build/source/libs/icu-xetex/layout/ThaiLayoutEngine.cpp | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/Build/source/libs/icu-xetex/layout/ThaiLayoutEngine.cpp b/Build/source/libs/icu-xetex/layout/ThaiLayoutEngine.cpp deleted file mode 100644 index 89154277765..00000000000 --- a/Build/source/libs/icu-xetex/layout/ThaiLayoutEngine.cpp +++ /dev/null @@ -1,123 +0,0 @@ - -/* - * - * (C) Copyright IBM Corp. 1998-2008 - All Rights Reserved - * - */ - -#include "LETypes.h" -#include "LayoutEngine.h" -#include "ThaiLayoutEngine.h" -#include "ScriptAndLanguageTags.h" -#include "LEGlyphStorage.h" - -#include "KernTable.h" - -#include "ThaiShaping.h" - -U_NAMESPACE_BEGIN - -UOBJECT_DEFINE_RTTI_IMPLEMENTATION(ThaiLayoutEngine) - -ThaiLayoutEngine::ThaiLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, le_int32 typoFlags) - : LayoutEngine(fontInstance, scriptCode, languageCode, typoFlags) -{ - fErrorChar = 0x25CC; - - // Figure out which presentation forms the font uses - if (! fontInstance->canDisplay(0x0E01)) { - // No Thai in font; don't use presentation forms. - fGlyphSet = 3; - } else if (fontInstance->canDisplay(0x0E64)) { - // WorldType uses reserved space in Thai block - fGlyphSet = 0; - } else if (fontInstance->canDisplay(0xF701)) { - // Microsoft corporate zone - fGlyphSet = 1; - - if (!fontInstance->canDisplay(fErrorChar)) { - fErrorChar = 0xF71B; - } - } else if (fontInstance->canDisplay(0xF885)) { - // Apple corporate zone - fGlyphSet = 2; - } else { - // no presentation forms in the font - fGlyphSet = 3; - } -} - -ThaiLayoutEngine::~ThaiLayoutEngine() -{ - // nothing to do -} - -// Input: characters (0..max provided for context) -// Output: glyphs, char indices -// Returns: the glyph count -// NOTE: this assumes that ThaiShaping::compose will allocate the outChars array... -le_int32 ThaiLayoutEngine::computeGlyphs(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool /*rightToLeft*/, LEGlyphStorage &glyphStorage, LEErrorCode &success) -{ - if (LE_FAILURE(success)) { - return 0; - } - - if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) { - success = LE_ILLEGAL_ARGUMENT_ERROR; - return 0; - } - - LEUnicode *outChars; - le_int32 glyphCount; - - // This is enough room for the worst-case expansion - // (it says here...) - outChars = LE_NEW_ARRAY(LEUnicode, count * 2); - - if (outChars == NULL) { - success = LE_MEMORY_ALLOCATION_ERROR; - return 0; - } - - glyphStorage.allocateGlyphArray(count * 2, FALSE, success); - - if (LE_FAILURE(success)) { - LE_DELETE_ARRAY(outChars); - success = LE_MEMORY_ALLOCATION_ERROR; - return 0; - } - - glyphCount = ThaiShaping::compose(chars, offset, count, fGlyphSet, fErrorChar, outChars, glyphStorage); - mapCharsToGlyphs(outChars, 0, glyphCount, FALSE, FALSE, glyphStorage, success); - - LE_DELETE_ARRAY(outChars); - - glyphStorage.adoptGlyphCount(glyphCount); - return glyphCount; -} - -// This is the same as LayoutEngline::adjustGlyphPositions() except that it doesn't call adjustMarkGlyphs -void ThaiLayoutEngine::adjustGlyphPositions(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool /*reverse*/, - LEGlyphStorage &glyphStorage, LEErrorCode &success) -{ - if (LE_FAILURE(success)) { - return; - } - - if (chars == NULL || offset < 0 || count < 0) { - success = LE_ILLEGAL_ARGUMENT_ERROR; - return; - } - - if (fTypoFlags & 0x1) { /* kerning enabled */ - static const le_uint32 kernTableTag = LE_KERN_TABLE_TAG; - - KernTable kt(fFontInstance, getFontTable(kernTableTag)); - kt.process(glyphStorage); - } - - // default is no adjustments - return; -} - -U_NAMESPACE_END |