1 /*
2 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package sun.font;
27
28 import java.awt.Font;
29 import java.awt.font.FontRenderContext;
30 import java.awt.geom.AffineTransform;
31 import java.awt.geom.GeneralPath;;
32 import java.awt.geom.Point2D;
33 import java.awt.geom.Rectangle2D;
34
35 // Right now this class is final to avoid a problem with native code.
36 // For some reason the JNI IsInstanceOf was not working correctly
37 // so we are checking the class specifically. If we subclass this
38 // we need to modify the native code in CFontWrapper.m
39 public final class CFont extends PhysicalFont {
40
41 /* CFontStrike doesn't call these methods so they are unimplemented.
42 * They are here to meet the requirements of PhysicalFont, needed
43 * because a CFont can sometimes be returned where a PhysicalFont
44 * is expected.
45 */
46 StrikeMetrics getFontMetrics(long pScalerContext) {
47 throw new InternalError("Not implemented");
48 }
49
50 float getGlyphAdvance(long pScalerContext, int glyphCode) {
51 throw new InternalError("Not implemented");
52 }
53
54 void getGlyphMetrics(long pScalerContext, int glyphCode,
55 Point2D.Float metrics) {
56 throw new InternalError("Not implemented");
57 }
58
59 long getGlyphImage(long pScalerContext, int glyphCode) {
60 throw new InternalError("Not implemented");
61 }
62
63 Rectangle2D.Float getGlyphOutlineBounds(long pScalerContext,
64 int glyphCode) {
65 throw new InternalError("Not implemented");
66 }
67
68 GeneralPath getGlyphOutline(long pScalerContext, int glyphCode,
69 float x, float y) {
70 throw new InternalError("Not implemented");
71 }
72
73 GeneralPath getGlyphVectorOutline(long pScalerContext,
74 int[] glyphs, int numGlyphs,
75 float x, float y) {
76 throw new InternalError("Not implemented");
77 }
78
79 private static native long createNativeFont(final String nativeFontName,
80 final int style);
81 private static native void disposeNativeFont(final long nativeFontPtr);
82
83 private boolean isFakeItalic;
84 private String nativeFontName;
85 private long nativeFontPtr;
86
87 private native float getWidthNative(final long nativeFontPtr);
88 private native float getWeightNative(final long nativeFontPtr);
89
90 private int fontWidth = -1;
91 private int fontWeight = -1;
92
93 @Override
94 public int getWidth() {
95 if (fontWidth == -1) {
96 // Apple use a range of -1 -> +1, where 0.0 is normal
97 // OpenType uses a % range from 50% -> 200% where 100% is normal
98 // and maps these onto the integer values 1->9.
99 // Since that is what Font2D.getWidth() expects, remap to that.
100 float fw = getWidthNative(getNativeFontPtr());
101 if (fw == 0.0) { // short cut the common case
102 fontWidth = Font2D.FWIDTH_NORMAL;
103 return fontWidth;
104 }
105 fw += 1.0; fw *= 100.0;
106 if (fw <= 50.0) {
107 fontWidth = 1;
108 } else if (fw <= 62.5) {
109 fontWidth = 2;
110 } else if (fw <= 75.0) {
111 fontWidth = 3;
112 } else if (fw <= 87.5) {
113 fontWidth = 4;
114 } else if (fw <= 100.0) {
115 fontWidth = 5;
116 } else if (fw <= 112.5) {
117 fontWidth = 6;
118 } else if (fw <= 125.0) {
119 fontWidth = 7;
120 } else if (fw <= 150.0) {
121 fontWidth = 8;
122 } else {
123 fontWidth = 9;
124 }
125 }
126 return fontWidth;
127 }
128
129 @Override
130 public int getWeight() {
131 if (fontWeight == -1) {
132 // Apple use a range of -1 -> +1, where 0 is medium/regular
133 // Map this on to the OpenType range of 100->900 where
134 // 500 is medium/regular.
135 // We'll actually map to 0->1000 but that's close enough.
136 float fw = getWeightNative(getNativeFontPtr());
137 if (fw == 0) {
138 return Font2D.FWEIGHT_NORMAL;
139 }
140 fw += 1.0; fw *= 500;
141 fontWeight = (int)fw;
142 }
143 return fontWeight;
144 }
145
146 // this constructor is called from CFontWrapper.m
147 public CFont(String name) {
148 this(name, name);
149 }
150
151 public CFont(String name, String inFamilyName) {
152 handle = new Font2DHandle(this);
153 fullName = name;
154 familyName = inFamilyName;
155 nativeFontName = fullName;
156 setStyle();
157 }
158
159 /* Called from CFontManager too */
160 public CFont(CFont other, String logicalFamilyName) {
161 handle = new Font2DHandle(this);
162 fullName = logicalFamilyName;
163 familyName = logicalFamilyName;
164 nativeFontName = other.nativeFontName;
165 style = other.style;
166 isFakeItalic = other.isFakeItalic;
167 }
168
169 public CFont createItalicVariant() {
170 CFont font = new CFont(this, familyName);
171 font.nativeFontName = fullName;
172 font.fullName =
173 fullName + (style == Font.BOLD ? "" : "-") + "Italic-Derived";
174 font.style |= Font.ITALIC;
175 font.isFakeItalic = true;
176 return font;
177 }
178
179 protected synchronized long getNativeFontPtr() {
180 if (nativeFontPtr == 0L) {
181 nativeFontPtr = createNativeFont(nativeFontName, style);
182 }
183 return nativeFontPtr;
184 }
185
186 protected synchronized void finalize() {
187 if (nativeFontPtr != 0) {
188 disposeNativeFont(nativeFontPtr);
189 }
190 nativeFontPtr = 0;
191 }
192
193 protected CharToGlyphMapper getMapper() {
194 if (mapper == null) {
195 mapper = new CCharToGlyphMapper(this);
196 }
197 return mapper;
198 }
199
200 protected FontStrike createStrike(FontStrikeDesc desc) {
201 if (isFakeItalic) {
202 desc = new FontStrikeDesc(desc);
203 desc.glyphTx.concatenate(AffineTransform.getShearInstance(-0.2, 0));
204 }
205 return new CStrike(this, desc);
206 }
207
208 // <rdar://problem/5321707> sun.font.Font2D caches the last used strike,
209 // but does not check if the properties of the strike match the properties
210 // of the incoming java.awt.Font object (size, style, etc).
211 // Simple answer: don't cache.
212 private static FontRenderContext DEFAULT_FRC =
213 new FontRenderContext(null, false, false);
214 public FontStrike getStrike(final Font font) {
215 return getStrike(font, DEFAULT_FRC);
216 }
217
218 public String toString() {
219 return "CFont { fullName: " + fullName +
220 ", familyName: " + familyName + ", style: " + style +
221 " } aka: " + super.toString();
222 }
223 }