1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation. Oracle designates this
7 * particular file as subject to the "Classpath" exception as provided
8 * by Oracle in the LICENSE file that accompanied this code.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 */
24
25 /* Header for class sun_font_SunLayoutEngine */
26
27 #include <jni_util.h>
28 #include <stdlib.h>
29
30 #include "FontInstanceAdapter.h"
31 #include "LayoutEngine.h"
32 #include "sun_font_SunLayoutEngine.h"
33 #include "sunfontids.h"
34
35 void getFloat(JNIEnv* env, jobject pt, jfloat &x, jfloat &y) {
36 x = env->GetFloatField(pt, sunFontIDs.xFID);
37 y = env->GetFloatField(pt, sunFontIDs.yFID);
38 }
39
40 void putFloat(JNIEnv* env, jobject pt, jfloat x, jfloat y) {
41 env->SetFloatField(pt, sunFontIDs.xFID, x);
42 env->SetFloatField(pt, sunFontIDs.yFID, y);
43 }
44
45 static jclass gvdClass = 0;
46 static const char* gvdClassName = "sun/font/GlyphLayout$GVData";
47 static jfieldID gvdCountFID = 0;
48 static jfieldID gvdFlagsFID = 0;
49 static jfieldID gvdGlyphsFID = 0;
50 static jfieldID gvdPositionsFID = 0;
51 static jfieldID gvdIndicesFID = 0;
52
53 #define TYPO_RTL 0x80000000
54 #define TYPO_MASK 0x7
55
56 JNIEXPORT void JNICALL
57 Java_sun_font_SunLayoutEngine_initGVIDs
58 (JNIEnv *env, jclass cls) {
59 gvdClass = env->FindClass(gvdClassName);
60 if (!gvdClass) {
61 JNU_ThrowClassNotFoundException(env, gvdClassName);
62 return;
63 }
64 gvdClass = (jclass)env->NewGlobalRef(gvdClass);
65 if (!gvdClass) {
66 JNU_ThrowInternalError(env, "could not create global ref");
67 return;
68 }
69 gvdCountFID = env->GetFieldID(gvdClass, "_count", "I");
70 if (!gvdCountFID) {
71 gvdClass = 0;
72 JNU_ThrowNoSuchFieldException(env, "_count");
73 return;
74 }
75
76 gvdFlagsFID = env->GetFieldID(gvdClass, "_flags", "I");
77 if (!gvdFlagsFID) {
78 gvdClass = 0;
79 JNU_ThrowNoSuchFieldException(env, "_flags");
80 return;
81 }
82
83 gvdGlyphsFID = env->GetFieldID(gvdClass, "_glyphs", "[I");
84 if (!gvdGlyphsFID) {
85 gvdClass = 0;
86 JNU_ThrowNoSuchFieldException(env, "_glyphs");
87 return;
88 }
89
90 gvdPositionsFID = env->GetFieldID(gvdClass, "_positions", "[F");
91 if (!gvdPositionsFID) {
92 gvdClass = 0;
93 JNU_ThrowNoSuchFieldException(env, "_positions");
94 return;
95 }
96
97 gvdIndicesFID = env->GetFieldID(gvdClass, "_indices", "[I");
98 if (!gvdIndicesFID) {
99 gvdClass = 0;
100 JNU_ThrowNoSuchFieldException(env, "_indices");
101 return;
102 }
103 }
104
105 int putGV(JNIEnv* env, jint gmask, jint baseIndex, jobject gvdata, const LayoutEngine* engine, int glyphCount) {
106 int count = env->GetIntField(gvdata, gvdCountFID);
107 if (count < 0) {
108 JNU_ThrowInternalError(env, "count negative");
109 return 0;
110 }
111
112 jarray glyphArray = (jarray)env->GetObjectField(gvdata, gvdGlyphsFID);
113 if (IS_NULL(glyphArray)) {
114 JNU_ThrowInternalError(env, "glypharray null");
115 return 0;
116 }
117 jint capacity = env->GetArrayLength(glyphArray);
118 if (count + glyphCount > capacity) {
119 JNU_ThrowArrayIndexOutOfBoundsException(env, "");
120 return 0;
121 }
122
123 jarray posArray = (jarray)env->GetObjectField(gvdata, gvdPositionsFID);
124 if (IS_NULL(glyphArray)) {
125 JNU_ThrowInternalError(env, "positions array null");
126 return 0;
127 }
128 jarray inxArray = (jarray)env->GetObjectField(gvdata, gvdIndicesFID);
129 if (IS_NULL(inxArray)) {
130 JNU_ThrowInternalError(env, "indices array null");
131 return 0;
132 }
133
134 int countDelta = 0;
135
136 // le_uint32 is the same size as jint... forever, we hope
137 le_uint32* glyphs = (le_uint32*)env->GetPrimitiveArrayCritical(glyphArray, NULL);
138 if (glyphs) {
139 jfloat* positions = (jfloat*)env->GetPrimitiveArrayCritical(posArray, NULL);
140 if (positions) {
141 jint* indices = (jint*)env->GetPrimitiveArrayCritical(inxArray, NULL);
142 if (indices) {
143 LEErrorCode status = (LEErrorCode)0;
144 engine->getGlyphs(glyphs + count, gmask, status);
145 engine->getGlyphPositions(positions + (count * 2), status);
146 engine->getCharIndices((le_int32*)(indices + count), baseIndex, status);
147
148 countDelta = glyphCount;
149
150 // !!! need engine->getFlags to signal positions, indices data
151 /* "0" arg used instead of JNI_COMMIT as we want the carray
152 * to be freed by any VM that actually passes us a copy.
153 */
154 env->ReleasePrimitiveArrayCritical(inxArray, indices, 0);
155 }
156 env->ReleasePrimitiveArrayCritical(posArray, positions, 0);
157 }
158 env->ReleasePrimitiveArrayCritical(glyphArray, glyphs, 0);
159 }
160
161 if (countDelta) {
162 count += countDelta;
163 env->SetIntField(gvdata, gvdCountFID, count);
164 }
165
166 return 1;
167 }
168
169 /*
170 * Class: sun_font_SunLayoutEngine
171 * Method: nativeLayout
172 * Signature: (Lsun/font/FontStrike;[CIIIIZLjava/awt/geom/Point2D$Float;Lsun/font/GlyphLayout$GVData;)V
173 */
174 JNIEXPORT void JNICALL Java_sun_font_SunLayoutEngine_nativeLayout
175 (JNIEnv *env, jclass cls, jobject font2d, jobject strike, jfloatArray matrix, jint gmask,
176 jint baseIndex, jcharArray text, jint start, jint limit, jint min, jint max,
177 jint script, jint lang, jint typo_flags, jobject pt, jobject gvdata,
178 jlong upem, jlong layoutTables)
179 {
180 // fprintf(stderr, "nl font: %x strike: %x script: %d\n", font2d, strike, script); fflush(stderr);
181 float mat[4];
182 env->GetFloatArrayRegion(matrix, 0, 4, mat);
183 FontInstanceAdapter fia(env, font2d, strike, mat, 72, 72, (le_int32) upem, (TTLayoutTableCache *) layoutTables);
184 LEErrorCode success = LE_NO_ERROR;
185 LayoutEngine *engine = LayoutEngine::layoutEngineFactory(&fia, script, lang, typo_flags & TYPO_MASK, success);
186 if (engine == NULL) {
187 env->SetIntField(gvdata, gvdCountFID, -1); // flag failure
188 return;
189 }
190
191 if (min < 0) min = 0; if (max < min) max = min; /* defensive coding */
192 // have to copy, yuck, since code does upcalls now. this will be soooo slow
193 jint len = max - min;
194 jchar buffer[256];
195 jchar* chars = buffer;
196 if (len > 256) {
197 size_t size = len * sizeof(jchar);
198 if (size / sizeof(jchar) != len) {
199 return;
200 }
201 chars = (jchar*)malloc(size);
202 if (chars == 0) {
203 return;
204 }
205 }
206 // fprintf(stderr, "nl chars: %x text: %x min %d len %d typo %x\n", chars, text, min, len, typo_flags); fflush(stderr);
207
208 env->GetCharArrayRegion(text, min, len, chars);
209
210 jfloat x, y;
211 getFloat(env, pt, x, y);
212 jboolean rtl = (typo_flags & TYPO_RTL) != 0;
213 int glyphCount = engine->layoutChars(chars, start - min, limit - start, len, rtl, x, y, success);
214 // fprintf(stderr, "sle nl len %d -> gc: %d\n", len, glyphCount); fflush(stderr);
215
216 engine->getGlyphPosition(glyphCount, x, y, success);
217
218 // fprintf(stderr, "layout glyphs: %d x: %g y: %g\n", glyphCount, x, y); fflush(stderr);
219 if (LE_FAILURE(success)) {
220 env->SetIntField(gvdata, gvdCountFID, -1); // flag failure
221 } else {
222 if (putGV(env, gmask, baseIndex, gvdata, engine, glyphCount)) {
223 // !!! hmmm, could use current value in positions array of GVData...
224 putFloat(env, pt, x, y);
225 }
226 }
227
228 if (chars != buffer) {
229 free(chars);
230 }
231
232 delete engine;
233
234 }