1 /* libs/android_runtime/android/graphics/Paint.cpp 2 ** 3 ** Copyright 2006, The Android Open Source Project 4 ** 5 ** Licensed under the Apache License, Version 2.0 (the "License"); 6 ** you may not use this file except in compliance with the License. 7 ** You may obtain a copy of the License at 8 ** 9 ** http://www.apache.org/licenses/LICENSE-2.0 10 ** 11 ** Unless required by applicable law or agreed to in writing, software 12 ** distributed under the License is distributed on an "AS IS" BASIS, 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 ** See the License for the specific language governing permissions and 15 ** limitations under the License. 16 */ 17 18 #define LOG_TAG "Paint" 19 20 #include <utils/Log.h> 21 22 #include "jni.h" 23 #include "GraphicsJNI.h" 24 #include "core_jni_helpers.h" 25 #include <ScopedStringChars.h> 26 #include <ScopedUtfChars.h> 27 28 #include "SkBlurDrawLooper.h" 29 #include "SkColorFilter.h" 30 #include "SkMaskFilter.h" 31 #include "SkRasterizer.h" 32 #include "SkShader.h" 33 #include "SkTypeface.h" 34 #include "SkXfermode.h" 35 #include "unicode/uloc.h" 36 #include "unicode/ushape.h" 37 #include "utils/Blur.h" 38 39 #include <minikin/GraphemeBreak.h> 40 #include <minikin/Measurement.h> 41 #include "MinikinSkia.h" 42 #include "MinikinUtils.h" 43 #include "Paint.h" 44 #include "TypefaceImpl.h" 45 46 #include <vector> 47 48 // temporary for debugging 49 #include <Caches.h> 50 #include <utils/Log.h> 51 52 namespace android { 53 54 struct JMetricsID { 55 jfieldID top; 56 jfieldID ascent; 57 jfieldID descent; 58 jfieldID bottom; 59 jfieldID leading; 60 }; 61 62 static jclass gFontMetrics_class; 63 static JMetricsID gFontMetrics_fieldID; 64 65 static jclass gFontMetricsInt_class; 66 static JMetricsID gFontMetricsInt_fieldID; 67 68 static jclass gPaint_class; 69 static jfieldID gPaint_nativeInstanceID; 70 static jfieldID gPaint_nativeTypefaceID; 71 72 static void defaultSettingsForAndroid(Paint* paint) { 73 // GlyphID encoding is required because we are using Harfbuzz shaping 74 paint->setTextEncoding(Paint::kGlyphID_TextEncoding); 75 } 76 77 struct LocaleCacheEntry { 78 std::string javaLocale; 79 std::string languageTag; 80 }; 81 82 static thread_local LocaleCacheEntry sSingleEntryLocaleCache; 83 84 class PaintGlue { 85 public: 86 enum MoveOpt { 87 AFTER, AT_OR_AFTER, BEFORE, AT_OR_BEFORE, AT 88 }; 89 90 static Paint* getNativePaint(JNIEnv* env, jobject paint) { 91 SkASSERT(env); 92 SkASSERT(paint); 93 SkASSERT(env->IsInstanceOf(paint, gPaint_class)); 94 jlong paintHandle = env->GetLongField(paint, gPaint_nativeInstanceID); 95 android::Paint* p = reinterpret_cast<android::Paint*>(paintHandle); 96 SkASSERT(p); 97 return p; 98 } 99 100 static TypefaceImpl* getNativeTypeface(JNIEnv* env, jobject paint) { 101 SkASSERT(env); 102 SkASSERT(paint); 103 SkASSERT(env->IsInstanceOf(paint, gPaint_class)); 104 jlong typefaceHandle = env->GetLongField(paint, gPaint_nativeTypefaceID); 105 android::TypefaceImpl* p = reinterpret_cast<android::TypefaceImpl*>(typefaceHandle); 106 return p; 107 } 108 109 static void finalizer(JNIEnv* env, jobject clazz, jlong objHandle) { 110 Paint* obj = reinterpret_cast<Paint*>(objHandle); 111 delete obj; 112 } 113 114 static jlong init(JNIEnv* env, jobject clazz) { 115 SK_COMPILE_ASSERT(1 << 0 == SkPaint::kAntiAlias_Flag, paint_flags_mismatch); 116 SK_COMPILE_ASSERT(1 << 2 == SkPaint::kDither_Flag, paint_flags_mismatch); 117 SK_COMPILE_ASSERT(1 << 3 == SkPaint::kUnderlineText_Flag, paint_flags_mismatch); 118 SK_COMPILE_ASSERT(1 << 4 == SkPaint::kStrikeThruText_Flag, paint_flags_mismatch); 119 SK_COMPILE_ASSERT(1 << 5 == SkPaint::kFakeBoldText_Flag, paint_flags_mismatch); 120 SK_COMPILE_ASSERT(1 << 6 == SkPaint::kLinearText_Flag, paint_flags_mismatch); 121 SK_COMPILE_ASSERT(1 << 7 == SkPaint::kSubpixelText_Flag, paint_flags_mismatch); 122 SK_COMPILE_ASSERT(1 << 8 == SkPaint::kDevKernText_Flag, paint_flags_mismatch); 123 SK_COMPILE_ASSERT(1 << 10 == SkPaint::kEmbeddedBitmapText_Flag, paint_flags_mismatch); 124 125 Paint* obj = new Paint(); 126 defaultSettingsForAndroid(obj); 127 return reinterpret_cast<jlong>(obj); 128 } 129 130 static jlong initWithPaint(JNIEnv* env, jobject clazz, jlong paintHandle) { 131 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 132 Paint* obj = new Paint(*paint); 133 return reinterpret_cast<jlong>(obj); 134 } 135 136 static void reset(JNIEnv* env, jobject clazz, jlong objHandle) { 137 Paint* obj = reinterpret_cast<Paint*>(objHandle); 138 obj->reset(); 139 defaultSettingsForAndroid(obj); 140 } 141 142 static void assign(JNIEnv* env, jobject clazz, jlong dstPaintHandle, jlong srcPaintHandle) { 143 Paint* dst = reinterpret_cast<Paint*>(dstPaintHandle); 144 const Paint* src = reinterpret_cast<Paint*>(srcPaintHandle); 145 *dst = *src; 146 } 147 148 // Equivalent to the Java Paint's FILTER_BITMAP_FLAG. 149 static const uint32_t sFilterBitmapFlag = 0x02; 150 151 static jint getFlags(JNIEnv* env, jobject paint) { 152 NPE_CHECK_RETURN_ZERO(env, paint); 153 Paint* nativePaint = getNativePaint(env, paint); 154 uint32_t result = nativePaint->getFlags(); 155 result &= ~sFilterBitmapFlag; // Filtering no longer stored in this bit. Mask away. 156 if (nativePaint->getFilterQuality() != kNone_SkFilterQuality) { 157 result |= sFilterBitmapFlag; 158 } 159 return static_cast<jint>(result); 160 } 161 162 static void setFlags(JNIEnv* env, jobject paint, jint flags) { 163 NPE_CHECK_RETURN_VOID(env, paint); 164 Paint* nativePaint = getNativePaint(env, paint); 165 // Instead of modifying 0x02, change the filter level. 166 nativePaint->setFilterQuality(flags & sFilterBitmapFlag 167 ? kLow_SkFilterQuality 168 : kNone_SkFilterQuality); 169 // Don't pass through filter flag, which is no longer stored in paint's flags. 170 flags &= ~sFilterBitmapFlag; 171 // Use the existing value for 0x02. 172 const uint32_t existing0x02Flag = nativePaint->getFlags() & sFilterBitmapFlag; 173 flags |= existing0x02Flag; 174 nativePaint->setFlags(flags); 175 } 176 177 static jint getHinting(JNIEnv* env, jobject paint) { 178 NPE_CHECK_RETURN_ZERO(env, paint); 179 return getNativePaint(env, paint)->getHinting() 180 == Paint::kNo_Hinting ? 0 : 1; 181 } 182 183 static void setHinting(JNIEnv* env, jobject paint, jint mode) { 184 NPE_CHECK_RETURN_VOID(env, paint); 185 getNativePaint(env, paint)->setHinting( 186 mode == 0 ? Paint::kNo_Hinting : Paint::kNormal_Hinting); 187 } 188 189 static void setAntiAlias(JNIEnv* env, jobject paint, jboolean aa) { 190 NPE_CHECK_RETURN_VOID(env, paint); 191 getNativePaint(env, paint)->setAntiAlias(aa); 192 } 193 194 static void setLinearText(JNIEnv* env, jobject paint, jboolean linearText) { 195 NPE_CHECK_RETURN_VOID(env, paint); 196 getNativePaint(env, paint)->setLinearText(linearText); 197 } 198 199 static void setSubpixelText(JNIEnv* env, jobject paint, jboolean subpixelText) { 200 NPE_CHECK_RETURN_VOID(env, paint); 201 getNativePaint(env, paint)->setSubpixelText(subpixelText); 202 } 203 204 static void setUnderlineText(JNIEnv* env, jobject paint, jboolean underlineText) { 205 NPE_CHECK_RETURN_VOID(env, paint); 206 getNativePaint(env, paint)->setUnderlineText(underlineText); 207 } 208 209 static void setStrikeThruText(JNIEnv* env, jobject paint, jboolean strikeThruText) { 210 NPE_CHECK_RETURN_VOID(env, paint); 211 getNativePaint(env, paint)->setStrikeThruText(strikeThruText); 212 } 213 214 static void setFakeBoldText(JNIEnv* env, jobject paint, jboolean fakeBoldText) { 215 NPE_CHECK_RETURN_VOID(env, paint); 216 getNativePaint(env, paint)->setFakeBoldText(fakeBoldText); 217 } 218 219 static void setFilterBitmap(JNIEnv* env, jobject paint, jboolean filterBitmap) { 220 NPE_CHECK_RETURN_VOID(env, paint); 221 getNativePaint(env, paint)->setFilterQuality( 222 filterBitmap ? kLow_SkFilterQuality : kNone_SkFilterQuality); 223 } 224 225 static void setDither(JNIEnv* env, jobject paint, jboolean dither) { 226 NPE_CHECK_RETURN_VOID(env, paint); 227 getNativePaint(env, paint)->setDither(dither); 228 } 229 230 static jint getStyle(JNIEnv* env, jobject clazz,jlong objHandle) { 231 Paint* obj = reinterpret_cast<Paint*>(objHandle); 232 return static_cast<jint>(obj->getStyle()); 233 } 234 235 static void setStyle(JNIEnv* env, jobject clazz, jlong objHandle, jint styleHandle) { 236 Paint* obj = reinterpret_cast<Paint*>(objHandle); 237 Paint::Style style = static_cast<Paint::Style>(styleHandle); 238 obj->setStyle(style); 239 } 240 241 static jint getColor(JNIEnv* env, jobject paint) { 242 NPE_CHECK_RETURN_ZERO(env, paint); 243 int color; 244 color = getNativePaint(env, paint)->getColor(); 245 return static_cast<jint>(color); 246 } 247 248 static jint getAlpha(JNIEnv* env, jobject paint) { 249 NPE_CHECK_RETURN_ZERO(env, paint); 250 int alpha; 251 alpha = getNativePaint(env, paint)->getAlpha(); 252 return static_cast<jint>(alpha); 253 } 254 255 static void setColor(JNIEnv* env, jobject paint, jint color) { 256 NPE_CHECK_RETURN_VOID(env, paint); 257 getNativePaint(env, paint)->setColor(color); 258 } 259 260 static void setAlpha(JNIEnv* env, jobject paint, jint a) { 261 NPE_CHECK_RETURN_VOID(env, paint); 262 getNativePaint(env, paint)->setAlpha(a); 263 } 264 265 static jfloat getStrokeWidth(JNIEnv* env, jobject paint) { 266 NPE_CHECK_RETURN_ZERO(env, paint); 267 return SkScalarToFloat(getNativePaint(env, paint)->getStrokeWidth()); 268 } 269 270 static void setStrokeWidth(JNIEnv* env, jobject paint, jfloat width) { 271 NPE_CHECK_RETURN_VOID(env, paint); 272 getNativePaint(env, paint)->setStrokeWidth(width); 273 } 274 275 static jfloat getStrokeMiter(JNIEnv* env, jobject paint) { 276 NPE_CHECK_RETURN_ZERO(env, paint); 277 return SkScalarToFloat(getNativePaint(env, paint)->getStrokeMiter()); 278 } 279 280 static void setStrokeMiter(JNIEnv* env, jobject paint, jfloat miter) { 281 NPE_CHECK_RETURN_VOID(env, paint); 282 getNativePaint(env, paint)->setStrokeMiter(miter); 283 } 284 285 static jint getStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle) { 286 Paint* obj = reinterpret_cast<Paint*>(objHandle); 287 return static_cast<jint>(obj->getStrokeCap()); 288 } 289 290 static void setStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle, jint capHandle) { 291 Paint* obj = reinterpret_cast<Paint*>(objHandle); 292 Paint::Cap cap = static_cast<Paint::Cap>(capHandle); 293 obj->setStrokeCap(cap); 294 } 295 296 static jint getStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle) { 297 Paint* obj = reinterpret_cast<Paint*>(objHandle); 298 return static_cast<jint>(obj->getStrokeJoin()); 299 } 300 301 static void setStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle, jint joinHandle) { 302 Paint* obj = reinterpret_cast<Paint*>(objHandle); 303 Paint::Join join = (Paint::Join) joinHandle; 304 obj->setStrokeJoin(join); 305 } 306 307 static jboolean getFillPath(JNIEnv* env, jobject clazz, jlong objHandle, jlong srcHandle, jlong dstHandle) { 308 Paint* obj = reinterpret_cast<Paint*>(objHandle); 309 SkPath* src = reinterpret_cast<SkPath*>(srcHandle); 310 SkPath* dst = reinterpret_cast<SkPath*>(dstHandle); 311 return obj->getFillPath(*src, dst) ? JNI_TRUE : JNI_FALSE; 312 } 313 314 static jlong setShader(JNIEnv* env, jobject clazz, jlong objHandle, jlong shaderHandle) { 315 Paint* obj = reinterpret_cast<Paint*>(objHandle); 316 SkShader* shader = reinterpret_cast<SkShader*>(shaderHandle); 317 return reinterpret_cast<jlong>(obj->setShader(shader)); 318 } 319 320 static jlong setColorFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong filterHandle) { 321 Paint* obj = reinterpret_cast<Paint *>(objHandle); 322 SkColorFilter* filter = reinterpret_cast<SkColorFilter *>(filterHandle); 323 return reinterpret_cast<jlong>(obj->setColorFilter(filter)); 324 } 325 326 static jlong setXfermode(JNIEnv* env, jobject clazz, jlong objHandle, jlong xfermodeHandle) { 327 Paint* obj = reinterpret_cast<Paint*>(objHandle); 328 SkXfermode* xfermode = reinterpret_cast<SkXfermode*>(xfermodeHandle); 329 return reinterpret_cast<jlong>(obj->setXfermode(xfermode)); 330 } 331 332 static jlong setPathEffect(JNIEnv* env, jobject clazz, jlong objHandle, jlong effectHandle) { 333 Paint* obj = reinterpret_cast<Paint*>(objHandle); 334 SkPathEffect* effect = reinterpret_cast<SkPathEffect*>(effectHandle); 335 return reinterpret_cast<jlong>(obj->setPathEffect(effect)); 336 } 337 338 static jlong setMaskFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong maskfilterHandle) { 339 Paint* obj = reinterpret_cast<Paint*>(objHandle); 340 SkMaskFilter* maskfilter = reinterpret_cast<SkMaskFilter*>(maskfilterHandle); 341 return reinterpret_cast<jlong>(obj->setMaskFilter(maskfilter)); 342 } 343 344 static jlong setTypeface(JNIEnv* env, jobject clazz, jlong objHandle, jlong typefaceHandle) { 345 // TODO: in Paint refactoring, set typeface on android Paint, not Paint 346 return NULL; 347 } 348 349 static jlong setRasterizer(JNIEnv* env, jobject clazz, jlong objHandle, jlong rasterizerHandle) { 350 Paint* obj = reinterpret_cast<Paint*>(objHandle); 351 SkAutoTUnref<SkRasterizer> rasterizer(GraphicsJNI::refNativeRasterizer(rasterizerHandle)); 352 return reinterpret_cast<jlong>(obj->setRasterizer(rasterizer)); 353 } 354 355 static jint getTextAlign(JNIEnv* env, jobject clazz, jlong objHandle) { 356 Paint* obj = reinterpret_cast<Paint*>(objHandle); 357 return static_cast<jint>(obj->getTextAlign()); 358 } 359 360 static void setTextAlign(JNIEnv* env, jobject clazz, jlong objHandle, jint alignHandle) { 361 Paint* obj = reinterpret_cast<Paint*>(objHandle); 362 Paint::Align align = static_cast<Paint::Align>(alignHandle); 363 obj->setTextAlign(align); 364 } 365 366 // generate bcp47 identifier for the supplied locale 367 static void toLanguageTag(char* output, size_t outSize, 368 const char* locale) { 369 if (output == NULL || outSize <= 0) { 370 return; 371 } 372 if (locale == NULL) { 373 output[0] = '\0'; 374 return; 375 } 376 char canonicalChars[ULOC_FULLNAME_CAPACITY]; 377 UErrorCode uErr = U_ZERO_ERROR; 378 uloc_canonicalize(locale, canonicalChars, ULOC_FULLNAME_CAPACITY, 379 &uErr); 380 if (U_SUCCESS(uErr)) { 381 char likelyChars[ULOC_FULLNAME_CAPACITY]; 382 uErr = U_ZERO_ERROR; 383 uloc_addLikelySubtags(canonicalChars, likelyChars, 384 ULOC_FULLNAME_CAPACITY, &uErr); 385 if (U_SUCCESS(uErr)) { 386 uErr = U_ZERO_ERROR; 387 uloc_toLanguageTag(likelyChars, output, outSize, FALSE, &uErr); 388 if (U_SUCCESS(uErr)) { 389 return; 390 } else { 391 ALOGD("uloc_toLanguageTag(\"%s\") failed: %s", likelyChars, 392 u_errorName(uErr)); 393 } 394 } else { 395 ALOGD("uloc_addLikelySubtags(\"%s\") failed: %s", 396 canonicalChars, u_errorName(uErr)); 397 } 398 } else { 399 ALOGD("uloc_canonicalize(\"%s\") failed: %s", locale, 400 u_errorName(uErr)); 401 } 402 // unable to build a proper language identifier 403 output[0] = '\0'; 404 } 405 406 static void setTextLocale(JNIEnv* env, jobject clazz, jlong objHandle, jstring locale) { 407 Paint* obj = reinterpret_cast<Paint*>(objHandle); 408 ScopedUtfChars localeChars(env, locale); 409 if (sSingleEntryLocaleCache.javaLocale != localeChars.c_str()) { 410 sSingleEntryLocaleCache.javaLocale = localeChars.c_str(); 411 char langTag[ULOC_FULLNAME_CAPACITY]; 412 toLanguageTag(langTag, ULOC_FULLNAME_CAPACITY, localeChars.c_str()); 413 sSingleEntryLocaleCache.languageTag = langTag; 414 } 415 416 obj->setTextLocale(sSingleEntryLocaleCache.languageTag); 417 } 418 419 static jboolean isElegantTextHeight(JNIEnv* env, jobject paint) { 420 NPE_CHECK_RETURN_ZERO(env, paint); 421 Paint* obj = getNativePaint(env, paint); 422 return obj->getFontVariant() == VARIANT_ELEGANT; 423 } 424 425 static void setElegantTextHeight(JNIEnv* env, jobject paint, jboolean aa) { 426 NPE_CHECK_RETURN_VOID(env, paint); 427 Paint* obj = getNativePaint(env, paint); 428 obj->setFontVariant(aa ? VARIANT_ELEGANT : VARIANT_DEFAULT); 429 } 430 431 static jfloat getTextSize(JNIEnv* env, jobject paint) { 432 NPE_CHECK_RETURN_ZERO(env, paint); 433 return SkScalarToFloat(getNativePaint(env, paint)->getTextSize()); 434 } 435 436 static void setTextSize(JNIEnv* env, jobject paint, jfloat textSize) { 437 NPE_CHECK_RETURN_VOID(env, paint); 438 getNativePaint(env, paint)->setTextSize(textSize); 439 } 440 441 static jfloat getTextScaleX(JNIEnv* env, jobject paint) { 442 NPE_CHECK_RETURN_ZERO(env, paint); 443 return SkScalarToFloat(getNativePaint(env, paint)->getTextScaleX()); 444 } 445 446 static void setTextScaleX(JNIEnv* env, jobject paint, jfloat scaleX) { 447 NPE_CHECK_RETURN_VOID(env, paint); 448 getNativePaint(env, paint)->setTextScaleX(scaleX); 449 } 450 451 static jfloat getTextSkewX(JNIEnv* env, jobject paint) { 452 NPE_CHECK_RETURN_ZERO(env, paint); 453 return SkScalarToFloat(getNativePaint(env, paint)->getTextSkewX()); 454 } 455 456 static void setTextSkewX(JNIEnv* env, jobject paint, jfloat skewX) { 457 NPE_CHECK_RETURN_VOID(env, paint); 458 getNativePaint(env, paint)->setTextSkewX(skewX); 459 } 460 461 static jfloat getLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle) { 462 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 463 return paint->getLetterSpacing(); 464 } 465 466 static void setLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat letterSpacing) { 467 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 468 paint->setLetterSpacing(letterSpacing); 469 } 470 471 static void setFontFeatureSettings(JNIEnv* env, jobject clazz, jlong paintHandle, jstring settings) { 472 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 473 if (!settings) { 474 paint->setFontFeatureSettings(std::string()); 475 } else { 476 ScopedUtfChars settingsChars(env, settings); 477 paint->setFontFeatureSettings(std::string(settingsChars.c_str(), settingsChars.size())); 478 } 479 } 480 481 static jint getHyphenEdit(JNIEnv* env, jobject clazz, jlong paintHandle, jint hyphen) { 482 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 483 return paint->getHyphenEdit(); 484 } 485 486 static void setHyphenEdit(JNIEnv* env, jobject clazz, jlong paintHandle, jint hyphen) { 487 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 488 paint->setHyphenEdit((uint32_t)hyphen); 489 } 490 491 static SkScalar getMetricsInternal(JNIEnv* env, jobject jpaint, Paint::FontMetrics *metrics) { 492 const int kElegantTop = 2500; 493 const int kElegantBottom = -1000; 494 const int kElegantAscent = 1900; 495 const int kElegantDescent = -500; 496 const int kElegantLeading = 0; 497 Paint* paint = getNativePaint(env, jpaint); 498 TypefaceImpl* typeface = getNativeTypeface(env, jpaint); 499 typeface = TypefaceImpl_resolveDefault(typeface); 500 FakedFont baseFont = typeface->fFontCollection->baseFontFaked(typeface->fStyle); 501 float saveSkewX = paint->getTextSkewX(); 502 bool savefakeBold = paint->isFakeBoldText(); 503 MinikinFontSkia::populateSkPaint(paint, baseFont.font, baseFont.fakery); 504 SkScalar spacing = paint->getFontMetrics(metrics); 505 // The populateSkPaint call may have changed fake bold / text skew 506 // because we want to measure with those effects applied, so now 507 // restore the original settings. 508 paint->setTextSkewX(saveSkewX); 509 paint->setFakeBoldText(savefakeBold); 510 if (paint->getFontVariant() == VARIANT_ELEGANT) { 511 SkScalar size = paint->getTextSize(); 512 metrics->fTop = -size * kElegantTop / 2048; 513 metrics->fBottom = -size * kElegantBottom / 2048; 514 metrics->fAscent = -size * kElegantAscent / 2048; 515 metrics->fDescent = -size * kElegantDescent / 2048; 516 metrics->fLeading = size * kElegantLeading / 2048; 517 spacing = metrics->fDescent - metrics->fAscent + metrics->fLeading; 518 } 519 return spacing; 520 } 521 522 static jfloat ascent(JNIEnv* env, jobject paint) { 523 NPE_CHECK_RETURN_ZERO(env, paint); 524 Paint::FontMetrics metrics; 525 getMetricsInternal(env, paint, &metrics); 526 return SkScalarToFloat(metrics.fAscent); 527 } 528 529 static jfloat descent(JNIEnv* env, jobject paint) { 530 NPE_CHECK_RETURN_ZERO(env, paint); 531 Paint::FontMetrics metrics; 532 getMetricsInternal(env, paint, &metrics); 533 return SkScalarToFloat(metrics.fDescent); 534 } 535 536 static jfloat getFontMetrics(JNIEnv* env, jobject paint, jobject metricsObj) { 537 NPE_CHECK_RETURN_ZERO(env, paint); 538 Paint::FontMetrics metrics; 539 SkScalar spacing = getMetricsInternal(env, paint, &metrics); 540 541 if (metricsObj) { 542 SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class)); 543 env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop)); 544 env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent)); 545 env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent)); 546 env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom)); 547 env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading)); 548 } 549 return SkScalarToFloat(spacing); 550 } 551 552 static jint getFontMetricsInt(JNIEnv* env, jobject paint, jobject metricsObj) { 553 NPE_CHECK_RETURN_ZERO(env, paint); 554 Paint::FontMetrics metrics; 555 556 getMetricsInternal(env, paint, &metrics); 557 int ascent = SkScalarRoundToInt(metrics.fAscent); 558 int descent = SkScalarRoundToInt(metrics.fDescent); 559 int leading = SkScalarRoundToInt(metrics.fLeading); 560 561 if (metricsObj) { 562 SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class)); 563 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloorToInt(metrics.fTop)); 564 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent); 565 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent); 566 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeilToInt(metrics.fBottom)); 567 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading); 568 } 569 return descent - ascent + leading; 570 } 571 572 static jfloat measureText_CIII(JNIEnv* env, jobject jpaint, jcharArray text, jint index, jint count, 573 jint bidiFlags) { 574 NPE_CHECK_RETURN_ZERO(env, jpaint); 575 NPE_CHECK_RETURN_ZERO(env, text); 576 577 size_t textLength = env->GetArrayLength(text); 578 if ((index | count) < 0 || (size_t)(index + count) > textLength) { 579 doThrowAIOOBE(env); 580 return 0; 581 } 582 if (count == 0) { 583 return 0; 584 } 585 586 Paint* paint = getNativePaint(env, jpaint); 587 const jchar* textArray = env->GetCharArrayElements(text, NULL); 588 jfloat result = 0; 589 590 Layout layout; 591 TypefaceImpl* typeface = getNativeTypeface(env, jpaint); 592 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, textArray + index, 0, count, 593 count); 594 result = layout.getAdvance(); 595 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT); 596 return result; 597 } 598 599 static jfloat measureText_StringIII(JNIEnv* env, jobject jpaint, jstring text, jint start, jint end, 600 jint bidiFlags) { 601 NPE_CHECK_RETURN_ZERO(env, jpaint); 602 NPE_CHECK_RETURN_ZERO(env, text); 603 604 size_t textLength = env->GetStringLength(text); 605 int count = end - start; 606 if ((start | count) < 0 || (size_t)end > textLength) { 607 doThrowAIOOBE(env); 608 return 0; 609 } 610 if (count == 0) { 611 return 0; 612 } 613 614 const jchar* textArray = env->GetStringChars(text, NULL); 615 Paint* paint = getNativePaint(env, jpaint); 616 jfloat width = 0; 617 618 Layout layout; 619 TypefaceImpl* typeface = getNativeTypeface(env, jpaint); 620 // Only the substring is used for measurement, so no additional context is passed in. This 621 // behavior is consistent between char[] and String specializations. 622 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, textArray + start, 0, count, count); 623 width = layout.getAdvance(); 624 625 env->ReleaseStringChars(text, textArray); 626 return width; 627 } 628 629 static jfloat measureText_StringI(JNIEnv* env, jobject jpaint, jstring text, jint bidiFlags) { 630 NPE_CHECK_RETURN_ZERO(env, jpaint); 631 NPE_CHECK_RETURN_ZERO(env, text); 632 633 size_t textLength = env->GetStringLength(text); 634 if (textLength == 0) { 635 return 0; 636 } 637 638 const jchar* textArray = env->GetStringChars(text, NULL); 639 Paint* paint = getNativePaint(env, jpaint); 640 jfloat width = 0; 641 642 Layout layout; 643 TypefaceImpl* typeface = getNativeTypeface(env, jpaint); 644 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, textArray, 0, textLength, textLength); 645 width = layout.getAdvance(); 646 647 env->ReleaseStringChars(text, textArray); 648 return width; 649 } 650 651 static int dotextwidths(JNIEnv* env, Paint* paint, TypefaceImpl* typeface, const jchar text[], int count, 652 jfloatArray widths, jint bidiFlags) { 653 NPE_CHECK_RETURN_ZERO(env, paint); 654 NPE_CHECK_RETURN_ZERO(env, text); 655 656 if (count < 0 || !widths) { 657 doThrowAIOOBE(env); 658 return 0; 659 } 660 if (count == 0) { 661 return 0; 662 } 663 size_t widthsLength = env->GetArrayLength(widths); 664 if ((size_t)count > widthsLength) { 665 doThrowAIOOBE(env); 666 return 0; 667 } 668 669 AutoJavaFloatArray autoWidths(env, widths, count); 670 jfloat* widthsArray = autoWidths.ptr(); 671 672 Layout layout; 673 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, 0, count, count); 674 layout.getAdvances(widthsArray); 675 676 return count; 677 } 678 679 static jint getTextWidths___CIII_F(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray text, 680 jint index, jint count, jint bidiFlags, jfloatArray widths) { 681 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 682 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 683 const jchar* textArray = env->GetCharArrayElements(text, NULL); 684 count = dotextwidths(env, paint, typeface, textArray + index, count, widths, bidiFlags); 685 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), 686 JNI_ABORT); 687 return count; 688 } 689 690 static jint getTextWidths__StringIII_F(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring text, 691 jint start, jint end, jint bidiFlags, jfloatArray widths) { 692 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 693 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 694 const jchar* textArray = env->GetStringChars(text, NULL); 695 int count = dotextwidths(env, paint, typeface, textArray + start, end - start, widths, bidiFlags); 696 env->ReleaseStringChars(text, textArray); 697 return count; 698 } 699 700 static jfloat doTextRunAdvances(JNIEnv *env, Paint *paint, TypefaceImpl* typeface, const jchar *text, 701 jint start, jint count, jint contextCount, jboolean isRtl, 702 jfloatArray advances, jint advancesIndex) { 703 NPE_CHECK_RETURN_ZERO(env, paint); 704 NPE_CHECK_RETURN_ZERO(env, text); 705 706 if ((start | count | contextCount | advancesIndex) < 0 || contextCount < count) { 707 doThrowAIOOBE(env); 708 return 0; 709 } 710 if (count == 0) { 711 return 0; 712 } 713 if (advances) { 714 size_t advancesLength = env->GetArrayLength(advances); 715 if ((size_t)count > advancesLength) { 716 doThrowAIOOBE(env); 717 return 0; 718 } 719 } 720 jfloat* advancesArray = new jfloat[count]; 721 jfloat totalAdvance = 0; 722 723 int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR; 724 725 Layout layout; 726 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, start, count, contextCount); 727 layout.getAdvances(advancesArray); 728 totalAdvance = layout.getAdvance(); 729 730 if (advances != NULL) { 731 env->SetFloatArrayRegion(advances, advancesIndex, count, advancesArray); 732 } 733 delete [] advancesArray; 734 return totalAdvance; 735 } 736 737 static jfloat getTextRunAdvances___CIIIIZ_FI(JNIEnv* env, jobject clazz, jlong paintHandle, 738 jlong typefaceHandle, 739 jcharArray text, jint index, jint count, jint contextIndex, jint contextCount, 740 jboolean isRtl, jfloatArray advances, jint advancesIndex) { 741 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 742 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 743 jchar* textArray = env->GetCharArrayElements(text, NULL); 744 jfloat result = doTextRunAdvances(env, paint, typeface, textArray + contextIndex, 745 index - contextIndex, count, contextCount, isRtl, advances, advancesIndex); 746 env->ReleaseCharArrayElements(text, textArray, JNI_ABORT); 747 return result; 748 } 749 750 static jfloat getTextRunAdvances__StringIIIIZ_FI(JNIEnv* env, jobject clazz, jlong paintHandle, 751 jlong typefaceHandle, 752 jstring text, jint start, jint end, jint contextStart, jint contextEnd, jboolean isRtl, 753 jfloatArray advances, jint advancesIndex) { 754 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 755 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 756 const jchar* textArray = env->GetStringChars(text, NULL); 757 jfloat result = doTextRunAdvances(env, paint, typeface, textArray + contextStart, 758 start - contextStart, end - start, contextEnd - contextStart, isRtl, 759 advances, advancesIndex); 760 env->ReleaseStringChars(text, textArray); 761 return result; 762 } 763 764 static jint doTextRunCursor(JNIEnv *env, Paint* paint, const jchar *text, jint start, 765 jint count, jint flags, jint offset, jint opt) { 766 GraphemeBreak::MoveOpt moveOpt = GraphemeBreak::MoveOpt(opt); 767 size_t result = GraphemeBreak::getTextRunCursor(text, start, count, offset, moveOpt); 768 return static_cast<jint>(result); 769 } 770 771 static jint getTextRunCursor___C(JNIEnv* env, jobject clazz, jlong paintHandle, jcharArray text, 772 jint contextStart, jint contextCount, jint dir, jint offset, jint cursorOpt) { 773 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 774 jchar* textArray = env->GetCharArrayElements(text, NULL); 775 jint result = doTextRunCursor(env, paint, textArray, contextStart, contextCount, dir, 776 offset, cursorOpt); 777 env->ReleaseCharArrayElements(text, textArray, JNI_ABORT); 778 return result; 779 } 780 781 static jint getTextRunCursor__String(JNIEnv* env, jobject clazz, jlong paintHandle, jstring text, 782 jint contextStart, jint contextEnd, jint dir, jint offset, jint cursorOpt) { 783 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 784 const jchar* textArray = env->GetStringChars(text, NULL); 785 jint result = doTextRunCursor(env, paint, textArray, contextStart, 786 contextEnd - contextStart, dir, offset, cursorOpt); 787 env->ReleaseStringChars(text, textArray); 788 return result; 789 } 790 791 class GetTextFunctor { 792 public: 793 GetTextFunctor(const Layout& layout, SkPath* path, jfloat x, jfloat y, Paint* paint, 794 uint16_t* glyphs, SkPoint* pos) 795 : layout(layout), path(path), x(x), y(y), paint(paint), glyphs(glyphs), pos(pos) { 796 } 797 798 void operator()(size_t start, size_t end) { 799 for (size_t i = start; i < end; i++) { 800 glyphs[i] = layout.getGlyphId(i); 801 pos[i].fX = x + layout.getX(i); 802 pos[i].fY = y + layout.getY(i); 803 } 804 if (start == 0) { 805 paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, path); 806 } else { 807 paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, &tmpPath); 808 path->addPath(tmpPath); 809 } 810 } 811 private: 812 const Layout& layout; 813 SkPath* path; 814 jfloat x; 815 jfloat y; 816 Paint* paint; 817 uint16_t* glyphs; 818 SkPoint* pos; 819 SkPath tmpPath; 820 }; 821 822 static void getTextPath(JNIEnv* env, Paint* paint, TypefaceImpl* typeface, const jchar* text, 823 jint count, jint bidiFlags, jfloat x, jfloat y, SkPath* path) { 824 Layout layout; 825 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, 0, count, count); 826 size_t nGlyphs = layout.nGlyphs(); 827 uint16_t* glyphs = new uint16_t[nGlyphs]; 828 SkPoint* pos = new SkPoint[nGlyphs]; 829 830 x += MinikinUtils::xOffsetForTextAlign(paint, layout); 831 Paint::Align align = paint->getTextAlign(); 832 paint->setTextAlign(Paint::kLeft_Align); 833 paint->setTextEncoding(Paint::kGlyphID_TextEncoding); 834 GetTextFunctor f(layout, path, x, y, paint, glyphs, pos); 835 MinikinUtils::forFontRun(layout, paint, f); 836 paint->setTextAlign(align); 837 delete[] glyphs; 838 delete[] pos; 839 } 840 841 static void getTextPath___C(JNIEnv* env, jobject clazz, jlong paintHandle, 842 jlong typefaceHandle, jint bidiFlags, 843 jcharArray text, jint index, jint count, jfloat x, jfloat y, jlong pathHandle) { 844 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 845 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 846 SkPath* path = reinterpret_cast<SkPath*>(pathHandle); 847 const jchar* textArray = env->GetCharArrayElements(text, NULL); 848 getTextPath(env, paint, typeface, textArray + index, count, bidiFlags, x, y, path); 849 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT); 850 } 851 852 static void getTextPath__String(JNIEnv* env, jobject clazz, jlong paintHandle, 853 jlong typefaceHandle, jint bidiFlags, 854 jstring text, jint start, jint end, jfloat x, jfloat y, jlong pathHandle) { 855 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 856 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 857 SkPath* path = reinterpret_cast<SkPath*>(pathHandle); 858 const jchar* textArray = env->GetStringChars(text, NULL); 859 getTextPath(env, paint, typeface, textArray + start, end - start, bidiFlags, x, y, path); 860 env->ReleaseStringChars(text, textArray); 861 } 862 863 static void setShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat radius, 864 jfloat dx, jfloat dy, jint color) { 865 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 866 if (radius <= 0) { 867 paint->setLooper(NULL); 868 } 869 else { 870 SkScalar sigma = android::uirenderer::Blur::convertRadiusToSigma(radius); 871 paint->setLooper(SkBlurDrawLooper::Create((SkColor)color, sigma, dx, dy))->unref(); 872 } 873 } 874 875 static jboolean hasShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle) { 876 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 877 return paint->getLooper() && paint->getLooper()->asABlurShadow(NULL); 878 } 879 880 static int breakText(JNIEnv* env, const Paint& paint, TypefaceImpl* typeface, const jchar text[], 881 int count, float maxWidth, jint bidiFlags, jfloatArray jmeasured, 882 const bool forwardScan) { 883 size_t measuredCount = 0; 884 float measured = 0; 885 886 Layout layout; 887 MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, 0, count, count); 888 float* advances = new float[count]; 889 layout.getAdvances(advances); 890 891 for (int i = 0; i < count; i++) { 892 // traverse in the given direction 893 int index = forwardScan ? i : (count - i - 1); 894 float width = advances[index]; 895 if (measured + width > maxWidth) { 896 break; 897 } 898 // properly handle clusters when scanning backwards 899 if (forwardScan || width != 0.0f) { 900 measuredCount = i + 1; 901 } 902 measured += width; 903 } 904 delete[] advances; 905 906 if (jmeasured && env->GetArrayLength(jmeasured) > 0) { 907 AutoJavaFloatArray autoMeasured(env, jmeasured, 1); 908 jfloat* array = autoMeasured.ptr(); 909 array[0] = measured; 910 } 911 return measuredCount; 912 } 913 914 static jint breakTextC(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray jtext, 915 jint index, jint count, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) { 916 NPE_CHECK_RETURN_ZERO(env, jtext); 917 918 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 919 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 920 921 bool forwardTextDirection; 922 if (count < 0) { 923 forwardTextDirection = false; 924 count = -count; 925 } 926 else { 927 forwardTextDirection = true; 928 } 929 930 if ((index < 0) || (index + count > env->GetArrayLength(jtext))) { 931 doThrowAIOOBE(env); 932 return 0; 933 } 934 935 const jchar* text = env->GetCharArrayElements(jtext, NULL); 936 count = breakText(env, *paint, typeface, text + index, count, maxWidth, 937 bidiFlags, jmeasuredWidth, forwardTextDirection); 938 env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text), 939 JNI_ABORT); 940 return count; 941 } 942 943 static jint breakTextS(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring jtext, 944 jboolean forwards, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) { 945 NPE_CHECK_RETURN_ZERO(env, jtext); 946 947 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 948 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 949 950 int count = env->GetStringLength(jtext); 951 const jchar* text = env->GetStringChars(jtext, NULL); 952 count = breakText(env, *paint, typeface, text, count, maxWidth, bidiFlags, jmeasuredWidth, forwards); 953 env->ReleaseStringChars(jtext, text); 954 return count; 955 } 956 957 static void doTextBounds(JNIEnv* env, const jchar* text, int count, jobject bounds, 958 const Paint& paint, TypefaceImpl* typeface, jint bidiFlags) { 959 SkRect r; 960 SkIRect ir; 961 962 Layout layout; 963 MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, 0, count, count); 964 MinikinRect rect; 965 layout.getBounds(&rect); 966 r.fLeft = rect.mLeft; 967 r.fTop = rect.mTop; 968 r.fRight = rect.mRight; 969 r.fBottom = rect.mBottom; 970 r.roundOut(&ir); 971 GraphicsJNI::irect_to_jrect(ir, env, bounds); 972 } 973 974 static void getStringBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle, 975 jstring text, jint start, jint end, jint bidiFlags, jobject bounds) { 976 const Paint* paint = reinterpret_cast<Paint*>(paintHandle);; 977 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 978 const jchar* textArray = env->GetStringChars(text, NULL); 979 doTextBounds(env, textArray + start, end - start, bounds, *paint, typeface, bidiFlags); 980 env->ReleaseStringChars(text, textArray); 981 } 982 983 static void getCharArrayBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle, 984 jcharArray text, jint index, jint count, jint bidiFlags, jobject bounds) { 985 const Paint* paint = reinterpret_cast<Paint*>(paintHandle); 986 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 987 const jchar* textArray = env->GetCharArrayElements(text, NULL); 988 doTextBounds(env, textArray + index, count, bounds, *paint, typeface, bidiFlags); 989 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), 990 JNI_ABORT); 991 } 992 993 static jboolean layoutContainsNotdef(const Layout& layout) { 994 for (size_t i = 0; i < layout.nGlyphs(); i++) { 995 if (layout.getGlyphId(i) == 0) { 996 return true; 997 } 998 } 999 return false; 1000 } 1001 1002 static jboolean hasGlyphVariation(const Paint* paint, TypefaceImpl* typeface, jint bidiFlags, 1003 const jchar* chars, size_t size) { 1004 // TODO: query font for whether character has variation selector; requires a corresponding 1005 // function in Minikin. 1006 return false; 1007 } 1008 1009 static jboolean hasGlyph(JNIEnv *env, jclass, jlong paintHandle, jlong typefaceHandle, 1010 jint bidiFlags, jstring string) { 1011 const Paint* paint = reinterpret_cast<Paint*>(paintHandle); 1012 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 1013 ScopedStringChars str(env, string); 1014 1015 /* start by rejecting variation selectors (not supported yet) */ 1016 size_t nChars = 0; 1017 for (size_t i = 0; i < str.size(); i++) { 1018 jchar c = str[i]; 1019 if (0xDC00 <= c && c <= 0xDFFF) { 1020 // invalid UTF-16, unpaired trailing surrogate 1021 return false; 1022 } else if (0xD800 <= c && c <= 0xDBFF) { 1023 if (i + 1 == str.size()) { 1024 // invalid UTF-16, unpaired leading surrogate at end of string 1025 return false; 1026 } 1027 i++; 1028 jchar c2 = str[i]; 1029 if (!(0xDC00 <= c2 && c2 <= 0xDFFF)) { 1030 // invalid UTF-16, unpaired leading surrogate 1031 return false; 1032 } 1033 // UTF-16 encoding of range U+E0100..U+E01EF is DB40 DD00 .. DB40 DDEF 1034 if (c == 0xDB40 && 0xDD00 <= c2 && c2 <= 0xDDEF) { 1035 return hasGlyphVariation(paint, typeface, bidiFlags, str.get(), str.size()); 1036 } 1037 } else if (0xFE00 <= c && c <= 0xFE0F) { 1038 return hasGlyphVariation(paint, typeface, bidiFlags, str.get(), str.size()); 1039 } 1040 nChars++; 1041 } 1042 Layout layout; 1043 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, str.get(), 0, str.size(), 1044 str.size()); 1045 size_t nGlyphs = layout.nGlyphs(); 1046 if (nGlyphs != 1 && nChars > 1) { 1047 // multiple-character input, and was not a ligature 1048 // TODO: handle ZWJ/ZWNJ characters specially so we can detect certain ligatures 1049 // in joining scripts, such as Arabic and Mongolian. 1050 return false; 1051 } 1052 return nGlyphs > 0 && !layoutContainsNotdef(layout); 1053 } 1054 1055 static jfloat doRunAdvance(const Paint* paint, TypefaceImpl* typeface, const jchar buf[], 1056 jint start, jint count, jint bufSize, jboolean isRtl, jint offset) { 1057 Layout layout; 1058 int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR; 1059 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, buf, start, count, bufSize); 1060 return getRunAdvance(layout, buf, start, count, offset); 1061 } 1062 1063 static jfloat getRunAdvance___CIIIIZI_F(JNIEnv *env, jclass, jlong paintHandle, 1064 jlong typefaceHandle, jcharArray text, jint start, jint end, jint contextStart, 1065 jint contextEnd, jboolean isRtl, jint offset) { 1066 const Paint* paint = reinterpret_cast<Paint*>(paintHandle); 1067 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 1068 jchar* textArray = (jchar*) env->GetPrimitiveArrayCritical(text, NULL); 1069 jfloat result = doRunAdvance(paint, typeface, textArray + contextStart, 1070 start - contextStart, end - start, contextEnd - contextStart, isRtl, 1071 offset - contextStart); 1072 env->ReleasePrimitiveArrayCritical(text, textArray, JNI_ABORT); 1073 return result; 1074 } 1075 1076 static jint doOffsetForAdvance(const Paint* paint, TypefaceImpl* typeface, const jchar buf[], 1077 jint start, jint count, jint bufSize, jboolean isRtl, jfloat advance) { 1078 Layout layout; 1079 int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR; 1080 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, buf, start, count, bufSize); 1081 return getOffsetForAdvance(layout, buf, start, count, advance); 1082 } 1083 static jint getOffsetForAdvance___CIIIIZF_I(JNIEnv *env, jclass, jlong paintHandle, 1084 jlong typefaceHandle, jcharArray text, jint start, jint end, jint contextStart, 1085 jint contextEnd, jboolean isRtl, jfloat advance) { 1086 const Paint* paint = reinterpret_cast<Paint*>(paintHandle); 1087 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 1088 jchar* textArray = (jchar*) env->GetPrimitiveArrayCritical(text, NULL); 1089 jint result = doOffsetForAdvance(paint, typeface, textArray + contextStart, 1090 start - contextStart, end - start, contextEnd - contextStart, isRtl, advance); 1091 result += contextStart; 1092 env->ReleasePrimitiveArrayCritical(text, textArray, JNI_ABORT); 1093 return result; 1094 } 1095 1096 }; 1097 1098 static JNINativeMethod methods[] = { 1099 {"finalizer", "(J)V", (void*) PaintGlue::finalizer}, 1100 {"native_init","()J", (void*) PaintGlue::init}, 1101 {"native_initWithPaint","(J)J", (void*) PaintGlue::initWithPaint}, 1102 1103 {"native_reset","!(J)V", (void*) PaintGlue::reset}, 1104 {"native_set","!(JJ)V", (void*) PaintGlue::assign}, 1105 {"getFlags","!()I", (void*) PaintGlue::getFlags}, 1106 {"setFlags","!(I)V", (void*) PaintGlue::setFlags}, 1107 {"getHinting","!()I", (void*) PaintGlue::getHinting}, 1108 {"setHinting","!(I)V", (void*) PaintGlue::setHinting}, 1109 {"setAntiAlias","!(Z)V", (void*) PaintGlue::setAntiAlias}, 1110 {"setSubpixelText","!(Z)V", (void*) PaintGlue::setSubpixelText}, 1111 {"setLinearText","!(Z)V", (void*) PaintGlue::setLinearText}, 1112 {"setUnderlineText","!(Z)V", (void*) PaintGlue::setUnderlineText}, 1113 {"setStrikeThruText","!(Z)V", (void*) PaintGlue::setStrikeThruText}, 1114 {"setFakeBoldText","!(Z)V", (void*) PaintGlue::setFakeBoldText}, 1115 {"setFilterBitmap","!(Z)V", (void*) PaintGlue::setFilterBitmap}, 1116 {"setDither","!(Z)V", (void*) PaintGlue::setDither}, 1117 {"native_getStyle","!(J)I", (void*) PaintGlue::getStyle}, 1118 {"native_setStyle","!(JI)V", (void*) PaintGlue::setStyle}, 1119 {"getColor","!()I", (void*) PaintGlue::getColor}, 1120 {"setColor","!(I)V", (void*) PaintGlue::setColor}, 1121 {"getAlpha","!()I", (void*) PaintGlue::getAlpha}, 1122 {"setAlpha","!(I)V", (void*) PaintGlue::setAlpha}, 1123 {"getStrokeWidth","!()F", (void*) PaintGlue::getStrokeWidth}, 1124 {"setStrokeWidth","!(F)V", (void*) PaintGlue::setStrokeWidth}, 1125 {"getStrokeMiter","!()F", (void*) PaintGlue::getStrokeMiter}, 1126 {"setStrokeMiter","!(F)V", (void*) PaintGlue::setStrokeMiter}, 1127 {"native_getStrokeCap","!(J)I", (void*) PaintGlue::getStrokeCap}, 1128 {"native_setStrokeCap","!(JI)V", (void*) PaintGlue::setStrokeCap}, 1129 {"native_getStrokeJoin","!(J)I", (void*) PaintGlue::getStrokeJoin}, 1130 {"native_setStrokeJoin","!(JI)V", (void*) PaintGlue::setStrokeJoin}, 1131 {"native_getFillPath","!(JJJ)Z", (void*) PaintGlue::getFillPath}, 1132 {"native_setShader","!(JJ)J", (void*) PaintGlue::setShader}, 1133 {"native_setColorFilter","!(JJ)J", (void*) PaintGlue::setColorFilter}, 1134 {"native_setXfermode","!(JJ)J", (void*) PaintGlue::setXfermode}, 1135 {"native_setPathEffect","!(JJ)J", (void*) PaintGlue::setPathEffect}, 1136 {"native_setMaskFilter","!(JJ)J", (void*) PaintGlue::setMaskFilter}, 1137 {"native_setTypeface","!(JJ)J", (void*) PaintGlue::setTypeface}, 1138 {"native_setRasterizer","!(JJ)J", (void*) PaintGlue::setRasterizer}, 1139 {"native_getTextAlign","!(J)I", (void*) PaintGlue::getTextAlign}, 1140 {"native_setTextAlign","!(JI)V", (void*) PaintGlue::setTextAlign}, 1141 {"native_setTextLocale","!(JLjava/lang/String;)V", (void*) PaintGlue::setTextLocale}, 1142 {"isElegantTextHeight","!()Z", (void*) PaintGlue::isElegantTextHeight}, 1143 {"setElegantTextHeight","!(Z)V", (void*) PaintGlue::setElegantTextHeight}, 1144 {"getTextSize","!()F", (void*) PaintGlue::getTextSize}, 1145 {"setTextSize","!(F)V", (void*) PaintGlue::setTextSize}, 1146 {"getTextScaleX","!()F", (void*) PaintGlue::getTextScaleX}, 1147 {"setTextScaleX","!(F)V", (void*) PaintGlue::setTextScaleX}, 1148 {"getTextSkewX","!()F", (void*) PaintGlue::getTextSkewX}, 1149 {"setTextSkewX","!(F)V", (void*) PaintGlue::setTextSkewX}, 1150 {"native_getLetterSpacing","!(J)F", (void*) PaintGlue::getLetterSpacing}, 1151 {"native_setLetterSpacing","!(JF)V", (void*) PaintGlue::setLetterSpacing}, 1152 {"native_setFontFeatureSettings","(JLjava/lang/String;)V", 1153 (void*) PaintGlue::setFontFeatureSettings}, 1154 {"native_getHyphenEdit", "!(J)I", (void*) PaintGlue::getHyphenEdit}, 1155 {"native_setHyphenEdit", "!(JI)V", (void*) PaintGlue::setHyphenEdit}, 1156 {"ascent","!()F", (void*) PaintGlue::ascent}, 1157 {"descent","!()F", (void*) PaintGlue::descent}, 1158 1159 {"getFontMetrics", "!(Landroid/graphics/Paint$FontMetrics;)F", 1160 (void*)PaintGlue::getFontMetrics}, 1161 {"getFontMetricsInt", "!(Landroid/graphics/Paint$FontMetricsInt;)I", 1162 (void*)PaintGlue::getFontMetricsInt}, 1163 {"native_measureText","([CIII)F", (void*) PaintGlue::measureText_CIII}, 1164 {"native_measureText","(Ljava/lang/String;I)F", (void*) PaintGlue::measureText_StringI}, 1165 {"native_measureText","(Ljava/lang/String;III)F", (void*) PaintGlue::measureText_StringIII}, 1166 {"native_breakText","(JJ[CIIFI[F)I", (void*) PaintGlue::breakTextC}, 1167 {"native_breakText","(JJLjava/lang/String;ZFI[F)I", (void*) PaintGlue::breakTextS}, 1168 {"native_getTextWidths","(JJ[CIII[F)I", (void*) PaintGlue::getTextWidths___CIII_F}, 1169 {"native_getTextWidths","(JJLjava/lang/String;III[F)I", 1170 (void*) PaintGlue::getTextWidths__StringIII_F}, 1171 {"native_getTextRunAdvances","(JJ[CIIIIZ[FI)F", 1172 (void*) PaintGlue::getTextRunAdvances___CIIIIZ_FI}, 1173 {"native_getTextRunAdvances","(JJLjava/lang/String;IIIIZ[FI)F", 1174 (void*) PaintGlue::getTextRunAdvances__StringIIIIZ_FI}, 1175 1176 {"native_getTextRunCursor", "(J[CIIIII)I", (void*) PaintGlue::getTextRunCursor___C}, 1177 {"native_getTextRunCursor", "(JLjava/lang/String;IIIII)I", 1178 (void*) PaintGlue::getTextRunCursor__String}, 1179 {"native_getTextPath", "(JJI[CIIFFJ)V", (void*) PaintGlue::getTextPath___C}, 1180 {"native_getTextPath", "(JJILjava/lang/String;IIFFJ)V", (void*) PaintGlue::getTextPath__String}, 1181 {"nativeGetStringBounds", "(JJLjava/lang/String;IIILandroid/graphics/Rect;)V", 1182 (void*) PaintGlue::getStringBounds }, 1183 {"nativeGetCharArrayBounds", "(JJ[CIIILandroid/graphics/Rect;)V", 1184 (void*) PaintGlue::getCharArrayBounds }, 1185 {"native_hasGlyph", "(JJILjava/lang/String;)Z", (void*) PaintGlue::hasGlyph }, 1186 {"native_getRunAdvance", "(JJ[CIIIIZI)F", (void*) PaintGlue::getRunAdvance___CIIIIZI_F}, 1187 {"native_getOffsetForAdvance", "(JJ[CIIIIZF)I", 1188 (void*) PaintGlue::getOffsetForAdvance___CIIIIZF_I}, 1189 1190 {"native_setShadowLayer", "!(JFFFI)V", (void*)PaintGlue::setShadowLayer}, 1191 {"native_hasShadowLayer", "!(J)Z", (void*)PaintGlue::hasShadowLayer} 1192 }; 1193 1194 int register_android_graphics_Paint(JNIEnv* env) { 1195 gFontMetrics_class = FindClassOrDie(env, "android/graphics/Paint$FontMetrics"); 1196 gFontMetrics_class = MakeGlobalRefOrDie(env, gFontMetrics_class); 1197 1198 gFontMetrics_fieldID.top = GetFieldIDOrDie(env, gFontMetrics_class, "top", "F"); 1199 gFontMetrics_fieldID.ascent = GetFieldIDOrDie(env, gFontMetrics_class, "ascent", "F"); 1200 gFontMetrics_fieldID.descent = GetFieldIDOrDie(env, gFontMetrics_class, "descent", "F"); 1201 gFontMetrics_fieldID.bottom = GetFieldIDOrDie(env, gFontMetrics_class, "bottom", "F"); 1202 gFontMetrics_fieldID.leading = GetFieldIDOrDie(env, gFontMetrics_class, "leading", "F"); 1203 1204 gFontMetricsInt_class = FindClassOrDie(env, "android/graphics/Paint$FontMetricsInt"); 1205 gFontMetricsInt_class = MakeGlobalRefOrDie(env, gFontMetricsInt_class); 1206 1207 gFontMetricsInt_fieldID.top = GetFieldIDOrDie(env, gFontMetricsInt_class, "top", "I"); 1208 gFontMetricsInt_fieldID.ascent = GetFieldIDOrDie(env, gFontMetricsInt_class, "ascent", "I"); 1209 gFontMetricsInt_fieldID.descent = GetFieldIDOrDie(env, gFontMetricsInt_class, "descent", "I"); 1210 gFontMetricsInt_fieldID.bottom = GetFieldIDOrDie(env, gFontMetricsInt_class, "bottom", "I"); 1211 gFontMetricsInt_fieldID.leading = GetFieldIDOrDie(env, gFontMetricsInt_class, "leading", "I"); 1212 1213 gPaint_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Paint")); 1214 gPaint_nativeInstanceID = GetFieldIDOrDie(env, gPaint_class, "mNativePaint", "J"); 1215 gPaint_nativeTypefaceID = GetFieldIDOrDie(env, gPaint_class, "mNativeTypeface", "J"); 1216 1217 return RegisterMethodsOrDie(env, "android/graphics/Paint", methods, NELEM(methods)); 1218 } 1219 1220 } 1221
