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/* ******************************************************************************* * * © 2016 and later: Unicode, Inc. and others. * License & terms of use: http://www.unicode.org/copyright.html#License * ******************************************************************************* ******************************************************************************* * * Copyright (C) 1999-2003, International Business Machines * Corporation and others. All Rights Reserved. * ******************************************************************************* * file name: ScriptCompositeFontInstance.cpp * * created on: 02/05/2003 * created by: Eric R. Mader */ #include "layout/LETypes.h" #include "unicode/uscript.h" #include "FontMap.h" #include "ScriptCompositeFontInstance.h" const char ScriptCompositeFontInstance::fgClassID=0; ScriptCompositeFontInstance::ScriptCompositeFontInstance(FontMap *fontMap) : fFontMap(fontMap) { // nothing else to do } ScriptCompositeFontInstance::~ScriptCompositeFontInstance() { delete fFontMap; fFontMap = NULL; } void ScriptCompositeFontInstance::getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const { LEErrorCode status = LE_NO_ERROR; le_int32 script = LE_GET_SUB_FONT(glyph); const LEFontInstance *font = fFontMap->getScriptFont(script, status); advance.fX = 0; advance.fY = 0; if (LE_SUCCESS(status)) { font->getGlyphAdvance(LE_GET_GLYPH(glyph), advance); } } le_bool ScriptCompositeFontInstance::getGlyphPoint(LEGlyphID glyph, le_int32 pointNumber, LEPoint &point) const { LEErrorCode status = LE_NO_ERROR; le_int32 script = LE_GET_SUB_FONT(glyph); const LEFontInstance *font = fFontMap->getScriptFont(script, status); if (LE_SUCCESS(status)) { return font->getGlyphPoint(LE_GET_GLYPH(glyph), pointNumber, point); } return FALSE; } const LEFontInstance *ScriptCompositeFontInstance::getSubFont(const LEUnicode chars[], le_int32 *offset, le_int32 limit, le_int32 script, LEErrorCode &success) const { if (LE_FAILURE(success)) { return NULL; } if (chars == NULL || *offset < 0 || limit < 0 || *offset >= limit || script < 0 || script >= scriptCodeCount) { success = LE_ILLEGAL_ARGUMENT_ERROR; return NULL; } const LEFontInstance *result = fFontMap->getScriptFont(script, success); if (LE_FAILURE(success)) { return NULL; } *offset = limit; return result; } // This is the really stupid version that doesn't look in any other font for the character... // It would be better to also look in the "DEFAULT:" font. Another thing to do would be to // look in all the fonts in some order, script code order being the most obvious... LEGlyphID ScriptCompositeFontInstance::mapCharToGlyph(LEUnicode32 ch) const { UErrorCode error = U_ZERO_ERROR; LEErrorCode status = LE_NO_ERROR; le_int32 script = uscript_getScript(ch, &error); const LEFontInstance *scriptFont = fFontMap->getScriptFont(script, status); LEGlyphID subFont = LE_SET_SUB_FONT(0, script); if (LE_FAILURE(status)) { return subFont; } LEGlyphID glyph = scriptFont->mapCharToGlyph(ch); return LE_SET_GLYPH(subFont, glyph); }
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