184 if (b == 0) {
185 return a;
186 }
187
188 /* Do an initial approximation, in root */
189 root = a > b ? a + (b / 2) : b + (a / 2);
190
191 /* An unrolled Newton-Raphson iteration sequence */
192 root = (root + (a * (a / root)) + (b * (b / root)) + 1) / 2;
193 root = (root + (a * (a / root)) + (b * (b / root)) + 1) / 2;
194 root = (root + (a * (a / root)) + (b * (b / root)) + 1) / 2;
195
196 return root;
197 }
198
199 JDKFontInfo*
200 createJDKFontInfo(JNIEnv *env,
201 jobject font2D,
202 jobject fontStrike,
203 jfloat ptSize,
204 jlong pScaler,
205 jlong pNativeFont,
206 jfloatArray matrix,
207 jboolean aat) {
208
209
210 JDKFontInfo *fi = (JDKFontInfo*)malloc(sizeof(JDKFontInfo));
211 if (!fi) {
212 return NULL;
213 }
214 fi->env = env; // this is valid only for the life of this JNI call.
215 fi->font2D = font2D;
216 fi->fontStrike = fontStrike;
217 fi->nativeFont = pNativeFont;
218 fi->aat = aat;
219 (*env)->GetFloatArrayRegion(env, matrix, 0, 4, fi->matrix);
220 fi->ptSize = ptSize;
221 fi->xPtSize = euclidianDistance(fi->matrix[0], fi->matrix[1]);
222 fi->yPtSize = euclidianDistance(fi->matrix[2], fi->matrix[3]);
223 if (!aat && (getenv("HB_NODEVTX") != NULL)) {
224 fi->devScale = fi->xPtSize / fi->ptSize;
225 } else {
226 fi->devScale = 1.0f;
227 }
228 return fi;
229 }
230
231
232 #define TYPO_KERN 0x00000001
233 #define TYPO_LIGA 0x00000002
234 #define TYPO_RTL 0x80000000
235
236 JNIEXPORT jboolean JNICALL Java_sun_font_SunLayoutEngine_shape
237 (JNIEnv *env, jclass cls,
238 jobject font2D,
239 jobject fontStrike,
240 jfloat ptSize,
241 jfloatArray matrix,
242 jlong pScaler,
243 jlong pNativeFont,
244 jboolean aat,
245 jcharArray text,
246 jobject gvdata,
247 jint script,
248 jint offset,
249 jint limit,
250 jint baseIndex,
251 jobject startPt,
252 jint flags,
253 jint slot) {
254
255 hb_buffer_t *buffer;
256 hb_font_t* hbfont;
257 jchar *chars;
258 jsize len;
259 int glyphCount;
260 hb_glyph_info_t *glyphInfo;
261 hb_glyph_position_t *glyphPos;
262 hb_direction_t direction = HB_DIRECTION_LTR;
263 hb_feature_t *features = NULL;
264 int featureCount = 0;
265 char* kern = (flags & TYPO_KERN) ? "kern" : "-kern";
266 char* liga = (flags & TYPO_LIGA) ? "liga" : "-liga";
267 jboolean ret;
268 unsigned int buflen;
269
270 JDKFontInfo *jdkFontInfo =
271 createJDKFontInfo(env, font2D, fontStrike, ptSize,
272 pScaler, pNativeFont, matrix, aat);
273 if (!jdkFontInfo) {
274 return JNI_FALSE;
275 }
276 jdkFontInfo->env = env; // this is valid only for the life of this JNI call.
277 jdkFontInfo->font2D = font2D;
278 jdkFontInfo->fontStrike = fontStrike;
279
280 hbfont = hb_jdk_font_create(jdkFontInfo, NULL);
281
282 buffer = hb_buffer_create();
283 hb_buffer_set_script(buffer, getHBScriptCode(script));
284 hb_buffer_set_language(buffer,
285 hb_ot_tag_to_language(HB_OT_TAG_DEFAULT_LANGUAGE));
286 if ((flags & TYPO_RTL) != 0) {
287 direction = HB_DIRECTION_RTL;
288 }
289 hb_buffer_set_direction(buffer, direction);
290 hb_buffer_set_cluster_level(buffer,
291 HB_BUFFER_CLUSTER_LEVEL_MONOTONE_CHARACTERS);
292
293 chars = (*env)->GetCharArrayElements(env, text, NULL);
294 if ((*env)->ExceptionCheck(env)) {
295 hb_buffer_destroy(buffer);
296 hb_font_destroy(hbfont);
297 free((void*)jdkFontInfo);
298 return JNI_FALSE;
299 }
300 len = (*env)->GetArrayLength(env, text);
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184 if (b == 0) {
185 return a;
186 }
187
188 /* Do an initial approximation, in root */
189 root = a > b ? a + (b / 2) : b + (a / 2);
190
191 /* An unrolled Newton-Raphson iteration sequence */
192 root = (root + (a * (a / root)) + (b * (b / root)) + 1) / 2;
193 root = (root + (a * (a / root)) + (b * (b / root)) + 1) / 2;
194 root = (root + (a * (a / root)) + (b * (b / root)) + 1) / 2;
195
196 return root;
197 }
198
199 JDKFontInfo*
200 createJDKFontInfo(JNIEnv *env,
201 jobject font2D,
202 jobject fontStrike,
203 jfloat ptSize,
204 jlong pNativeFont,
205 jfloatArray matrix,
206 jboolean aat) {
207
208
209 JDKFontInfo *fi = (JDKFontInfo*)malloc(sizeof(JDKFontInfo));
210 if (!fi) {
211 return NULL;
212 }
213 fi->env = env; // this is valid only for the life of this JNI call.
214 fi->font2D = font2D;
215 fi->fontStrike = fontStrike;
216 fi->nativeFont = pNativeFont;
217 fi->aat = aat;
218 (*env)->GetFloatArrayRegion(env, matrix, 0, 4, fi->matrix);
219 fi->ptSize = ptSize;
220 fi->xPtSize = euclidianDistance(fi->matrix[0], fi->matrix[1]);
221 fi->yPtSize = euclidianDistance(fi->matrix[2], fi->matrix[3]);
222 if (!aat && (getenv("HB_NODEVTX") != NULL)) {
223 fi->devScale = fi->xPtSize / fi->ptSize;
224 } else {
225 fi->devScale = 1.0f;
226 }
227 return fi;
228 }
229
230
231 #define TYPO_KERN 0x00000001
232 #define TYPO_LIGA 0x00000002
233 #define TYPO_RTL 0x80000000
234
235 JNIEXPORT jboolean JNICALL Java_sun_font_SunLayoutEngine_shape
236 (JNIEnv *env, jclass cls,
237 jobject font2D,
238 jobject fontStrike,
239 jfloat ptSize,
240 jfloatArray matrix,
241 jlong pFace,
242 jlong pNativeFont,
243 jboolean aat,
244 jcharArray text,
245 jobject gvdata,
246 jint script,
247 jint offset,
248 jint limit,
249 jint baseIndex,
250 jobject startPt,
251 jint flags,
252 jint slot) {
253
254 hb_buffer_t *buffer;
255 hb_face_t* hbface;
256 hb_font_t* hbfont;
257 jchar *chars;
258 jsize len;
259 int glyphCount;
260 hb_glyph_info_t *glyphInfo;
261 hb_glyph_position_t *glyphPos;
262 hb_direction_t direction = HB_DIRECTION_LTR;
263 hb_feature_t *features = NULL;
264 int featureCount = 0;
265 char* kern = (flags & TYPO_KERN) ? "kern" : "-kern";
266 char* liga = (flags & TYPO_LIGA) ? "liga" : "-liga";
267 jboolean ret;
268 unsigned int buflen;
269
270 JDKFontInfo *jdkFontInfo =
271 createJDKFontInfo(env, font2D, fontStrike, ptSize,
272 pNativeFont, matrix, aat);
273 if (!jdkFontInfo) {
274 return JNI_FALSE;
275 }
276 jdkFontInfo->env = env; // this is valid only for the life of this JNI call.
277 jdkFontInfo->font2D = font2D;
278 jdkFontInfo->fontStrike = fontStrike;
279
280 hbface = (hb_face_t*) jlong_to_ptr(pFace);
281 hbfont = hb_jdk_font_create(hbface, jdkFontInfo, NULL);
282
283 buffer = hb_buffer_create();
284 hb_buffer_set_script(buffer, getHBScriptCode(script));
285 hb_buffer_set_language(buffer,
286 hb_ot_tag_to_language(HB_OT_TAG_DEFAULT_LANGUAGE));
287 if ((flags & TYPO_RTL) != 0) {
288 direction = HB_DIRECTION_RTL;
289 }
290 hb_buffer_set_direction(buffer, direction);
291 hb_buffer_set_cluster_level(buffer,
292 HB_BUFFER_CLUSTER_LEVEL_MONOTONE_CHARACTERS);
293
294 chars = (*env)->GetCharArrayElements(env, text, NULL);
295 if ((*env)->ExceptionCheck(env)) {
296 hb_buffer_destroy(buffer);
297 hb_font_destroy(hbfont);
298 free((void*)jdkFontInfo);
299 return JNI_FALSE;
300 }
301 len = (*env)->GetArrayLength(env, text);
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