1 /*
2 * Copyright (c) 2010, 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.io.*;
29
30 /**
31 * Stores glyph-related data, used in the pure-java glyphcache.
32 *
33 * @author Clemens Eisserer
34 */
35
36 public class XRGlyphCacheEntry {
37 long glyphInfoPtr;
38
39 int lastUsed;
40 boolean pinned;
41
42 int xOff;
43 int yOff;
44
45 int glyphSet;
46
47 public XRGlyphCacheEntry(long glyphInfoPtr, GlyphList gl) {
48 this.glyphInfoPtr = glyphInfoPtr;
49
50 /* TODO: Does it make sence to cache results? */
51 xOff = (int) Math.round(getXAdvance());
52 yOff = (int) Math.round(getYAdvance());
53 }
54
55 public int getXOff() {
56 return xOff;
57 }
58
59 public int getYOff() {
60 return yOff;
61 }
62
63 public void setGlyphSet(int glyphSet) {
64 this.glyphSet = glyphSet;
65 }
66
67 public int getGlyphSet() {
68 return glyphSet;
69 }
70
71 public static int getGlyphID(long glyphInfoPtr) {
72 // We need to access the GlyphID with Unsafe.getAddress() because the corresponding field
73 // in the underlying C data-structure is of type 'void*' (see field 'cellInfo' of struct
74 // 'GlyphInfo' in src/share/native/sun/font/fontscalerdefs.h).
75 // On 64-bit Big-endian architectures it would be wrong to access this field with Unsafe.getInt().
76 return (int) StrikeCache.unsafe.getAddress(glyphInfoPtr + StrikeCache.cacheCellOffset);
77 }
78
79 public static void setGlyphID(long glyphInfoPtr, int id) {
80 // We need to access the GlyphID with Unsafe.putAddress() because the corresponding field
81 // in the underlying C data-structure is of type 'void*' (see field 'cellInfo' of struct
82 // 'GlyphInfo' in src/share/native/sun/font/fontscalerdefs.h).
83 // On 64-bit Big-endian architectures it would be wrong to write this field with Unsafe.putInt()
84 // because it is also accessed from native code as a 'long' (see
85 // Java_sun_java2d_xr_XRBackendNative_XRAddGlyphsNative() in
86 // src/solaris/native/sun/java2d/x11/XRBackendNative.c)
87 StrikeCache.unsafe.putAddress(glyphInfoPtr + StrikeCache.cacheCellOffset, (long)id);
88 }
89
90 public int getGlyphID() {
91 return getGlyphID(glyphInfoPtr);
92 }
93
94 public void setGlyphID(int id) {
95 setGlyphID(glyphInfoPtr, id);
96 }
97
98 public float getXAdvance() {
99 return StrikeCache.unsafe.getFloat(glyphInfoPtr + StrikeCache.xAdvanceOffset);
100 }
101
102 public float getYAdvance() {
103 return StrikeCache.unsafe.getFloat(glyphInfoPtr + StrikeCache.yAdvanceOffset);
104 }
105
106 public int getSourceRowBytes() {
107 return StrikeCache.unsafe.getShort(glyphInfoPtr + StrikeCache.rowBytesOffset);
108 }
109
110 public int getWidth() {
111 return StrikeCache.unsafe.getShort(glyphInfoPtr + StrikeCache.widthOffset);
112 }
113
114 public int getHeight() {
115 return StrikeCache.unsafe.getShort(glyphInfoPtr + StrikeCache.heightOffset);
116 }
117
118 public void writePixelData(ByteArrayOutputStream os, boolean uploadAsLCD) {
119 long pixelDataAddress = StrikeCache.unsafe.getAddress(glyphInfoPtr + StrikeCache.pixelDataOffset);
120 if (pixelDataAddress == 0L) {
121 return;
122 }
123
124 int width = getWidth();
125 int height = getHeight();
126 int rowBytes = getSourceRowBytes();
127 int paddedWidth = getPaddedWidth(uploadAsLCD);
128
129 if (!uploadAsLCD) {
130 for (int line = 0; line < height; line++) {
131 for(int x = 0; x < paddedWidth; x++) {
132 if(x < width) {
133 os.write(StrikeCache.unsafe.getByte(pixelDataAddress + (line * rowBytes + x)));
134 }else {
135 /*pad to multiple of 4 bytes per line*/
136 os.write(0);
137 }
138 }
139 }
140 } else {
141 for (int line = 0; line < height; line++) {
142 int rowStart = line * rowBytes;
143 int rowBytesWidth = width * 3;
144 int srcpix = 0;
145 while (srcpix < rowBytesWidth) {
146 os.write(StrikeCache.unsafe.getByte
147 (pixelDataAddress + (rowStart + srcpix + 2)));
148 os.write(StrikeCache.unsafe.getByte
149 (pixelDataAddress + (rowStart + srcpix + 1)));
150 os.write(StrikeCache.unsafe.getByte
151 (pixelDataAddress + (rowStart + srcpix + 0)));
152 os.write(255);
153 srcpix += 3;
154 }
155 }
156 }
157 }
158
159 public float getTopLeftXOffset() {
160 return StrikeCache.unsafe.getFloat(glyphInfoPtr + StrikeCache.topLeftXOffset);
161 }
162
163 public float getTopLeftYOffset() {
164 return StrikeCache.unsafe.getFloat(glyphInfoPtr + StrikeCache.topLeftYOffset);
165 }
166
167 public long getGlyphInfoPtr() {
168 return glyphInfoPtr;
169 }
170
171 public boolean isGrayscale(boolean listContainsLCDGlyphs) {
172 return getSourceRowBytes() == getWidth() && !(getWidth() == 0 && getHeight() == 0 && listContainsLCDGlyphs);
173 }
174
175 public int getPaddedWidth(boolean listContainsLCDGlyphs) {
176 int width = getWidth();
177 return isGrayscale(listContainsLCDGlyphs) ? (int) Math.ceil(width / 4.0) * 4 : width;
178 }
179
180 public int getDestinationRowBytes(boolean listContainsLCDGlyphs) {
181 boolean grayscale = isGrayscale(listContainsLCDGlyphs);
182 return grayscale ? getPaddedWidth(grayscale) : getWidth() * 4;
183 }
184
185 public int getGlyphDataLenth(boolean listContainsLCDGlyphs) {
186 return getDestinationRowBytes(listContainsLCDGlyphs) * getHeight();
187 }
188
189 public void setPinned() {
190 pinned = true;
191 }
192
193 public void setUnpinned() {
194 pinned = false;
195 }
196
197 public int getLastUsed() {
198 return lastUsed;
199 }
200
201 public void setLastUsed(int lastUsed) {
202 this.lastUsed = lastUsed;
203 }
204
205 public int getPixelCnt() {
206 return getWidth() * getHeight();
207 }
208
209 public boolean isPinned() {
210 return pinned;
211 }
212 }