J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Portions Copyright 1999-2007 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | |
| 27 | /* |
| 28 | * (C) Copyright IBM Corp. 1998-2001 - All Rights Reserved |
| 29 | * |
| 30 | * The original version of this source code and documentation is |
| 31 | * copyrighted and owned by IBM. These materials are provided |
| 32 | * under terms of a License Agreement between IBM and Sun. |
| 33 | * This technology is protected by multiple US and International |
| 34 | * patents. This notice and attribution to IBM may not be removed. |
| 35 | */ |
| 36 | |
| 37 | #ifndef __FONTINSTANCEADAPTER_H |
| 38 | #define __FONTINSTANCEADAPTER_H |
| 39 | |
| 40 | #include "LETypes.h" |
| 41 | #include "LEFontInstance.h" |
| 42 | #include "jni.h" |
| 43 | #include "sunfontids.h" |
| 44 | #include "fontscalerdefs.h" |
| 45 | #include <jni_util.h> |
| 46 | |
| 47 | class FontInstanceAdapter : public LEFontInstance { |
| 48 | private: |
| 49 | JNIEnv *env; |
| 50 | jobject font2D; |
| 51 | jobject fontStrike; |
| 52 | |
| 53 | float xppem; |
| 54 | float yppem; |
| 55 | |
| 56 | float xScaleUnitsToPoints; |
| 57 | float yScaleUnitsToPoints; |
| 58 | |
| 59 | float xScalePixelsToUnits; |
| 60 | float yScalePixelsToUnits; |
| 61 | |
| 62 | le_int32 upem; |
| 63 | float xPointSize, yPointSize; |
| 64 | float txMat[4]; |
| 65 | |
| 66 | float euclidianDistance(float a, float b); |
| 67 | |
| 68 | /* Table format is the same as defined in the truetype spec. |
| 69 | Pointer can be NULL (e.g. for Type1 fonts). */ |
| 70 | TTLayoutTableCache* layoutTables; |
| 71 | |
| 72 | public: |
| 73 | FontInstanceAdapter(JNIEnv *env, |
| 74 | jobject theFont2D, jobject theFontStrike, |
| 75 | float *matrix, le_int32 xRes, le_int32 yRes, |
| 76 | le_int32 theUPEM, TTLayoutTableCache *ltables); |
| 77 | |
| 78 | virtual ~FontInstanceAdapter() { }; |
| 79 | |
| 80 | virtual const LEFontInstance *getSubFont(const LEUnicode chars[], |
| 81 | le_int32 *offset, le_int32 limit, |
| 82 | le_int32 script, LEErrorCode &success) const { |
| 83 | return this; |
| 84 | } |
| 85 | |
| 86 | // tables are cached with the native font scaler data |
| 87 | // only supports gsub, gpos, gdef, mort tables at present |
| 88 | virtual const void *getFontTable(LETag tableTag) const; |
| 89 | |
| 90 | virtual void *getKernPairs() const { |
| 91 | return layoutTables->kernPairs; |
| 92 | } |
| 93 | virtual void setKernPairs(void *pairs) const { |
| 94 | layoutTables->kernPairs = pairs; |
| 95 | } |
| 96 | |
| 97 | virtual le_bool canDisplay(LEUnicode32 ch) const |
| 98 | { |
| 99 | return (le_bool)env->CallBooleanMethod(font2D, |
| 100 | sunFontIDs.canDisplayMID, ch); |
| 101 | }; |
| 102 | |
| 103 | virtual le_int32 getUnitsPerEM() const { |
| 104 | return upem; |
| 105 | }; |
| 106 | |
| 107 | virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch, const LECharMapper *mapper) const; |
| 108 | |
| 109 | virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch) const; |
| 110 | |
| 111 | virtual void mapCharsToWideGlyphs(const LEUnicode chars[], |
| 112 | le_int32 offset, le_int32 count, le_bool reverse, |
| 113 | const LECharMapper *mapper, le_uint32 glyphs[]) const; |
| 114 | |
| 115 | virtual le_uint32 mapCharToWideGlyph(LEUnicode32 ch, |
| 116 | const LECharMapper *mapper) const; |
| 117 | |
| 118 | virtual void getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const; |
| 119 | |
| 120 | virtual void getKerningAdjustment(LEPoint &adjustment) const; |
| 121 | |
| 122 | virtual void getWideGlyphAdvance(le_uint32 glyph, LEPoint &advance) const; |
| 123 | |
| 124 | virtual le_bool getGlyphPoint(LEGlyphID glyph, |
| 125 | le_int32 pointNumber, LEPoint &point) const; |
| 126 | |
| 127 | float getXPixelsPerEm() const |
| 128 | { |
| 129 | return xppem; |
| 130 | }; |
| 131 | |
| 132 | float getYPixelsPerEm() const |
| 133 | { |
| 134 | return yppem; |
| 135 | }; |
| 136 | |
| 137 | float xUnitsToPoints(float xUnits) const |
| 138 | { |
| 139 | return xUnits * xScaleUnitsToPoints; |
| 140 | }; |
| 141 | |
| 142 | float yUnitsToPoints(float yUnits) const |
| 143 | { |
| 144 | return yUnits * yScaleUnitsToPoints; |
| 145 | }; |
| 146 | |
| 147 | void unitsToPoints(LEPoint &units, LEPoint &points) const |
| 148 | { |
| 149 | points.fX = xUnitsToPoints(units.fX); |
| 150 | points.fY = yUnitsToPoints(units.fY); |
| 151 | } |
| 152 | |
| 153 | float xPixelsToUnits(float xPixels) const |
| 154 | { |
| 155 | return xPixels * xScalePixelsToUnits; |
| 156 | }; |
| 157 | |
| 158 | float yPixelsToUnits(float yPixels) const |
| 159 | { |
| 160 | return yPixels * yScalePixelsToUnits; |
| 161 | }; |
| 162 | |
| 163 | void pixelsToUnits(LEPoint &pixels, LEPoint &units) const |
| 164 | { |
| 165 | units.fX = xPixelsToUnits(pixels.fX); |
| 166 | units.fY = yPixelsToUnits(pixels.fY); |
| 167 | }; |
| 168 | |
| 169 | virtual float getScaleFactorX() const { |
| 170 | return xScalePixelsToUnits; |
| 171 | }; |
| 172 | |
| 173 | virtual float getScaleFactorY() const { |
| 174 | return yScalePixelsToUnits; |
| 175 | }; |
| 176 | |
| 177 | void transformFunits(float xFunits, float yFunits, LEPoint &pixels) const; |
| 178 | |
| 179 | virtual le_int32 getAscent() const { return 0; }; // not used |
| 180 | virtual le_int32 getDescent() const { return 0; }; // not used |
| 181 | virtual le_int32 getLeading() const { return 0; }; // not used |
| 182 | }; |
| 183 | |
| 184 | #endif |