1 // Copyright (C) 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
4 *******************************************************************************
6 * Copyright (C) 1999-2015, International Business Machines
7 * Corporation and others. All Rights Reserved.
9 *******************************************************************************
10 * file name: SimpleFontInstance.cpp
12 * created on: 03/30/2006
13 * created by: Eric R. Mader
16 #include "unicode/utypes.h"
17 #include "unicode/uchar.h"
19 #include "layout/LETypes.h"
20 #include "layout/LEFontInstance.h"
23 #include "CanonShaping.h"
26 #include "SimpleFontInstance.h"
28 SimpleFontInstance::SimpleFontInstance(float pointSize, LEErrorCode &status)
29 : fPointSize(pointSize), fAscent(0), fDescent(0)
31 if (LE_FAILURE(status)) {
35 fAscent = (le_int32) yUnitsToPoints(2000.0);
36 fDescent = (le_int32) yUnitsToPoints(600.0);
41 SimpleFontInstance::~SimpleFontInstance()
46 const void *SimpleFontInstance::getFontTable(LETag tableTag, size_t &length) const
48 length = -1; // unknown for this test.
50 if (tableTag == LE_GSUB_TABLE_TAG) {
51 return CanonShaping::glyphSubstitutionTable;
54 if (tableTag == LE_GDEF_TABLE_TAG) {
55 return CanonShaping::glyphDefinitionTable;
61 void SimpleFontInstance::getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const
64 if (u_getCombiningClass((UChar32) glyph) == 0) {
65 advance.fX = xUnitsToPoints(2048);
70 (void)glyph; // Suppress unused parameter compiler warning.
71 advance.fX = xUnitsToPoints(2048);
77 le_int32 SimpleFontInstance::getUnitsPerEM() const
82 le_int32 SimpleFontInstance::getAscent() const
87 le_int32 SimpleFontInstance::getDescent() const
92 le_int32 SimpleFontInstance::getLeading() const
97 // We really want to inherit this method from the superclass, but some compilers
98 // issue a warning if we don't implement it...
99 LEGlyphID SimpleFontInstance::mapCharToGlyph(LEUnicode32 ch, const LECharMapper *mapper, le_bool filterZeroWidth) const
101 return LEFontInstance::mapCharToGlyph(ch, mapper, filterZeroWidth);
104 // We really want to inherit this method from the superclass, but some compilers
105 // issue a warning if we don't implement it...
106 LEGlyphID SimpleFontInstance::mapCharToGlyph(LEUnicode32 ch, const LECharMapper *mapper) const
108 return LEFontInstance::mapCharToGlyph(ch, mapper);
111 LEGlyphID SimpleFontInstance::mapCharToGlyph(LEUnicode32 ch) const
113 return (LEGlyphID) ch;
116 float SimpleFontInstance::getXPixelsPerEm() const
121 float SimpleFontInstance::getYPixelsPerEm() const
126 float SimpleFontInstance::getScaleFactorX() const
131 float SimpleFontInstance::getScaleFactorY() const
136 le_bool SimpleFontInstance::getGlyphPoint(LEGlyphID /*glyph*/, le_int32 /*pointNumber*/, LEPoint &/*point*/) const