Paint.cpp revision f7f969e67e9ab420404807b1b103dcd18d7aa7b7
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 <ScopedUtfChars.h> 26#include <ScopedStringChars.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 "MinikinSkia.h" 41#include "MinikinUtils.h" 42#include "Paint.h" 43#include "TypefaceImpl.h" 44 45#include <vector> 46 47// temporary for debugging 48#include <Caches.h> 49#include <utils/Log.h> 50 51namespace android { 52 53struct JMetricsID { 54 jfieldID top; 55 jfieldID ascent; 56 jfieldID descent; 57 jfieldID bottom; 58 jfieldID leading; 59}; 60 61static jclass gFontMetrics_class; 62static JMetricsID gFontMetrics_fieldID; 63 64static jclass gFontMetricsInt_class; 65static JMetricsID gFontMetricsInt_fieldID; 66 67static jclass gPaint_class; 68static jfieldID gPaint_nativeInstanceID; 69static jfieldID gPaint_nativeTypefaceID; 70 71static void defaultSettingsForAndroid(Paint* paint) { 72 // GlyphID encoding is required because we are using Harfbuzz shaping 73 paint->setTextEncoding(Paint::kGlyphID_TextEncoding); 74} 75 76class PaintGlue { 77public: 78 enum MoveOpt { 79 AFTER, AT_OR_AFTER, BEFORE, AT_OR_BEFORE, AT 80 }; 81 82 static Paint* getNativePaint(JNIEnv* env, jobject paint) { 83 SkASSERT(env); 84 SkASSERT(paint); 85 SkASSERT(env->IsInstanceOf(paint, gPaint_class)); 86 jlong paintHandle = env->GetLongField(paint, gPaint_nativeInstanceID); 87 android::Paint* p = reinterpret_cast<android::Paint*>(paintHandle); 88 SkASSERT(p); 89 return p; 90 } 91 92 static TypefaceImpl* getNativeTypeface(JNIEnv* env, jobject paint) { 93 SkASSERT(env); 94 SkASSERT(paint); 95 SkASSERT(env->IsInstanceOf(paint, gPaint_class)); 96 jlong typefaceHandle = env->GetLongField(paint, gPaint_nativeTypefaceID); 97 android::TypefaceImpl* p = reinterpret_cast<android::TypefaceImpl*>(typefaceHandle); 98 return p; 99 } 100 101 static void finalizer(JNIEnv* env, jobject clazz, jlong objHandle) { 102 Paint* obj = reinterpret_cast<Paint*>(objHandle); 103 delete obj; 104 } 105 106 static jlong init(JNIEnv* env, jobject clazz) { 107 SK_COMPILE_ASSERT(1 << 0 == SkPaint::kAntiAlias_Flag, paint_flags_mismatch); 108 SK_COMPILE_ASSERT(1 << 2 == SkPaint::kDither_Flag, paint_flags_mismatch); 109 SK_COMPILE_ASSERT(1 << 3 == SkPaint::kUnderlineText_Flag, paint_flags_mismatch); 110 SK_COMPILE_ASSERT(1 << 4 == SkPaint::kStrikeThruText_Flag, paint_flags_mismatch); 111 SK_COMPILE_ASSERT(1 << 5 == SkPaint::kFakeBoldText_Flag, paint_flags_mismatch); 112 SK_COMPILE_ASSERT(1 << 6 == SkPaint::kLinearText_Flag, paint_flags_mismatch); 113 SK_COMPILE_ASSERT(1 << 7 == SkPaint::kSubpixelText_Flag, paint_flags_mismatch); 114 SK_COMPILE_ASSERT(1 << 8 == SkPaint::kDevKernText_Flag, paint_flags_mismatch); 115 SK_COMPILE_ASSERT(1 << 10 == SkPaint::kEmbeddedBitmapText_Flag, paint_flags_mismatch); 116 117 Paint* obj = new Paint(); 118 defaultSettingsForAndroid(obj); 119 return reinterpret_cast<jlong>(obj); 120 } 121 122 static jlong initWithPaint(JNIEnv* env, jobject clazz, jlong paintHandle) { 123 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 124 Paint* obj = new Paint(*paint); 125 return reinterpret_cast<jlong>(obj); 126 } 127 128 static void reset(JNIEnv* env, jobject clazz, jlong objHandle) { 129 Paint* obj = reinterpret_cast<Paint*>(objHandle); 130 obj->reset(); 131 defaultSettingsForAndroid(obj); 132 } 133 134 static void assign(JNIEnv* env, jobject clazz, jlong dstPaintHandle, jlong srcPaintHandle) { 135 Paint* dst = reinterpret_cast<Paint*>(dstPaintHandle); 136 const Paint* src = reinterpret_cast<Paint*>(srcPaintHandle); 137 *dst = *src; 138 } 139 140 // Equivalent to the Java Paint's FILTER_BITMAP_FLAG. 141 static const uint32_t sFilterBitmapFlag = 0x02; 142 143 static jint getFlags(JNIEnv* env, jobject paint) { 144 NPE_CHECK_RETURN_ZERO(env, paint); 145 Paint* nativePaint = getNativePaint(env, paint); 146 uint32_t result = nativePaint->getFlags(); 147 result &= ~sFilterBitmapFlag; // Filtering no longer stored in this bit. Mask away. 148 if (nativePaint->getFilterQuality() != kNone_SkFilterQuality) { 149 result |= sFilterBitmapFlag; 150 } 151 return static_cast<jint>(result); 152 } 153 154 static void setFlags(JNIEnv* env, jobject paint, jint flags) { 155 NPE_CHECK_RETURN_VOID(env, paint); 156 Paint* nativePaint = getNativePaint(env, paint); 157 // Instead of modifying 0x02, change the filter level. 158 nativePaint->setFilterQuality(flags & sFilterBitmapFlag 159 ? kLow_SkFilterQuality 160 : kNone_SkFilterQuality); 161 // Don't pass through filter flag, which is no longer stored in paint's flags. 162 flags &= ~sFilterBitmapFlag; 163 // Use the existing value for 0x02. 164 const uint32_t existing0x02Flag = nativePaint->getFlags() & sFilterBitmapFlag; 165 flags |= existing0x02Flag; 166 nativePaint->setFlags(flags); 167 } 168 169 static jint getHinting(JNIEnv* env, jobject paint) { 170 NPE_CHECK_RETURN_ZERO(env, paint); 171 return getNativePaint(env, paint)->getHinting() 172 == Paint::kNo_Hinting ? 0 : 1; 173 } 174 175 static void setHinting(JNIEnv* env, jobject paint, jint mode) { 176 NPE_CHECK_RETURN_VOID(env, paint); 177 getNativePaint(env, paint)->setHinting( 178 mode == 0 ? Paint::kNo_Hinting : Paint::kNormal_Hinting); 179 } 180 181 static void setAntiAlias(JNIEnv* env, jobject paint, jboolean aa) { 182 NPE_CHECK_RETURN_VOID(env, paint); 183 getNativePaint(env, paint)->setAntiAlias(aa); 184 } 185 186 static void setLinearText(JNIEnv* env, jobject paint, jboolean linearText) { 187 NPE_CHECK_RETURN_VOID(env, paint); 188 getNativePaint(env, paint)->setLinearText(linearText); 189 } 190 191 static void setSubpixelText(JNIEnv* env, jobject paint, jboolean subpixelText) { 192 NPE_CHECK_RETURN_VOID(env, paint); 193 getNativePaint(env, paint)->setSubpixelText(subpixelText); 194 } 195 196 static void setUnderlineText(JNIEnv* env, jobject paint, jboolean underlineText) { 197 NPE_CHECK_RETURN_VOID(env, paint); 198 getNativePaint(env, paint)->setUnderlineText(underlineText); 199 } 200 201 static void setStrikeThruText(JNIEnv* env, jobject paint, jboolean strikeThruText) { 202 NPE_CHECK_RETURN_VOID(env, paint); 203 getNativePaint(env, paint)->setStrikeThruText(strikeThruText); 204 } 205 206 static void setFakeBoldText(JNIEnv* env, jobject paint, jboolean fakeBoldText) { 207 NPE_CHECK_RETURN_VOID(env, paint); 208 getNativePaint(env, paint)->setFakeBoldText(fakeBoldText); 209 } 210 211 static void setFilterBitmap(JNIEnv* env, jobject paint, jboolean filterBitmap) { 212 NPE_CHECK_RETURN_VOID(env, paint); 213 getNativePaint(env, paint)->setFilterQuality( 214 filterBitmap ? kLow_SkFilterQuality : kNone_SkFilterQuality); 215 } 216 217 static void setDither(JNIEnv* env, jobject paint, jboolean dither) { 218 NPE_CHECK_RETURN_VOID(env, paint); 219 getNativePaint(env, paint)->setDither(dither); 220 } 221 222 static jint getStyle(JNIEnv* env, jobject clazz,jlong objHandle) { 223 Paint* obj = reinterpret_cast<Paint*>(objHandle); 224 return static_cast<jint>(obj->getStyle()); 225 } 226 227 static void setStyle(JNIEnv* env, jobject clazz, jlong objHandle, jint styleHandle) { 228 Paint* obj = reinterpret_cast<Paint*>(objHandle); 229 Paint::Style style = static_cast<Paint::Style>(styleHandle); 230 obj->setStyle(style); 231 } 232 233 static jint getColor(JNIEnv* env, jobject paint) { 234 NPE_CHECK_RETURN_ZERO(env, paint); 235 int color; 236 color = getNativePaint(env, paint)->getColor(); 237 return static_cast<jint>(color); 238 } 239 240 static jint getAlpha(JNIEnv* env, jobject paint) { 241 NPE_CHECK_RETURN_ZERO(env, paint); 242 int alpha; 243 alpha = getNativePaint(env, paint)->getAlpha(); 244 return static_cast<jint>(alpha); 245 } 246 247 static void setColor(JNIEnv* env, jobject paint, jint color) { 248 NPE_CHECK_RETURN_VOID(env, paint); 249 getNativePaint(env, paint)->setColor(color); 250 } 251 252 static void setAlpha(JNIEnv* env, jobject paint, jint a) { 253 NPE_CHECK_RETURN_VOID(env, paint); 254 getNativePaint(env, paint)->setAlpha(a); 255 } 256 257 static jfloat getStrokeWidth(JNIEnv* env, jobject paint) { 258 NPE_CHECK_RETURN_ZERO(env, paint); 259 return SkScalarToFloat(getNativePaint(env, paint)->getStrokeWidth()); 260 } 261 262 static void setStrokeWidth(JNIEnv* env, jobject paint, jfloat width) { 263 NPE_CHECK_RETURN_VOID(env, paint); 264 getNativePaint(env, paint)->setStrokeWidth(width); 265 } 266 267 static jfloat getStrokeMiter(JNIEnv* env, jobject paint) { 268 NPE_CHECK_RETURN_ZERO(env, paint); 269 return SkScalarToFloat(getNativePaint(env, paint)->getStrokeMiter()); 270 } 271 272 static void setStrokeMiter(JNIEnv* env, jobject paint, jfloat miter) { 273 NPE_CHECK_RETURN_VOID(env, paint); 274 getNativePaint(env, paint)->setStrokeMiter(miter); 275 } 276 277 static jint getStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle) { 278 Paint* obj = reinterpret_cast<Paint*>(objHandle); 279 return static_cast<jint>(obj->getStrokeCap()); 280 } 281 282 static void setStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle, jint capHandle) { 283 Paint* obj = reinterpret_cast<Paint*>(objHandle); 284 Paint::Cap cap = static_cast<Paint::Cap>(capHandle); 285 obj->setStrokeCap(cap); 286 } 287 288 static jint getStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle) { 289 Paint* obj = reinterpret_cast<Paint*>(objHandle); 290 return static_cast<jint>(obj->getStrokeJoin()); 291 } 292 293 static void setStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle, jint joinHandle) { 294 Paint* obj = reinterpret_cast<Paint*>(objHandle); 295 Paint::Join join = (Paint::Join) joinHandle; 296 obj->setStrokeJoin(join); 297 } 298 299 static jboolean getFillPath(JNIEnv* env, jobject clazz, jlong objHandle, jlong srcHandle, jlong dstHandle) { 300 Paint* obj = reinterpret_cast<Paint*>(objHandle); 301 SkPath* src = reinterpret_cast<SkPath*>(srcHandle); 302 SkPath* dst = reinterpret_cast<SkPath*>(dstHandle); 303 return obj->getFillPath(*src, dst) ? JNI_TRUE : JNI_FALSE; 304 } 305 306 static jlong setShader(JNIEnv* env, jobject clazz, jlong objHandle, jlong shaderHandle) { 307 Paint* obj = reinterpret_cast<Paint*>(objHandle); 308 SkShader* shader = reinterpret_cast<SkShader*>(shaderHandle); 309 return reinterpret_cast<jlong>(obj->setShader(shader)); 310 } 311 312 static jlong setColorFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong filterHandle) { 313 Paint* obj = reinterpret_cast<Paint *>(objHandle); 314 SkColorFilter* filter = reinterpret_cast<SkColorFilter *>(filterHandle); 315 return reinterpret_cast<jlong>(obj->setColorFilter(filter)); 316 } 317 318 static jlong setXfermode(JNIEnv* env, jobject clazz, jlong objHandle, jlong xfermodeHandle) { 319 Paint* obj = reinterpret_cast<Paint*>(objHandle); 320 SkXfermode* xfermode = reinterpret_cast<SkXfermode*>(xfermodeHandle); 321 return reinterpret_cast<jlong>(obj->setXfermode(xfermode)); 322 } 323 324 static jlong setPathEffect(JNIEnv* env, jobject clazz, jlong objHandle, jlong effectHandle) { 325 Paint* obj = reinterpret_cast<Paint*>(objHandle); 326 SkPathEffect* effect = reinterpret_cast<SkPathEffect*>(effectHandle); 327 return reinterpret_cast<jlong>(obj->setPathEffect(effect)); 328 } 329 330 static jlong setMaskFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong maskfilterHandle) { 331 Paint* obj = reinterpret_cast<Paint*>(objHandle); 332 SkMaskFilter* maskfilter = reinterpret_cast<SkMaskFilter*>(maskfilterHandle); 333 return reinterpret_cast<jlong>(obj->setMaskFilter(maskfilter)); 334 } 335 336 static jlong setTypeface(JNIEnv* env, jobject clazz, jlong objHandle, jlong typefaceHandle) { 337 // TODO: in Paint refactoring, set typeface on android Paint, not Paint 338 return NULL; 339 } 340 341 static jlong setRasterizer(JNIEnv* env, jobject clazz, jlong objHandle, jlong rasterizerHandle) { 342 Paint* obj = reinterpret_cast<Paint*>(objHandle); 343 SkAutoTUnref<SkRasterizer> rasterizer(GraphicsJNI::refNativeRasterizer(rasterizerHandle)); 344 return reinterpret_cast<jlong>(obj->setRasterizer(rasterizer)); 345 } 346 347 static jint getTextAlign(JNIEnv* env, jobject clazz, jlong objHandle) { 348 Paint* obj = reinterpret_cast<Paint*>(objHandle); 349 return static_cast<jint>(obj->getTextAlign()); 350 } 351 352 static void setTextAlign(JNIEnv* env, jobject clazz, jlong objHandle, jint alignHandle) { 353 Paint* obj = reinterpret_cast<Paint*>(objHandle); 354 Paint::Align align = static_cast<Paint::Align>(alignHandle); 355 obj->setTextAlign(align); 356 } 357 358 // generate bcp47 identifier for the supplied locale 359 static void toLanguageTag(char* output, size_t outSize, 360 const char* locale) { 361 if (output == NULL || outSize <= 0) { 362 return; 363 } 364 if (locale == NULL) { 365 output[0] = '\0'; 366 return; 367 } 368 char canonicalChars[ULOC_FULLNAME_CAPACITY]; 369 UErrorCode uErr = U_ZERO_ERROR; 370 uloc_canonicalize(locale, canonicalChars, ULOC_FULLNAME_CAPACITY, 371 &uErr); 372 if (U_SUCCESS(uErr)) { 373 char likelyChars[ULOC_FULLNAME_CAPACITY]; 374 uErr = U_ZERO_ERROR; 375 uloc_addLikelySubtags(canonicalChars, likelyChars, 376 ULOC_FULLNAME_CAPACITY, &uErr); 377 if (U_SUCCESS(uErr)) { 378 uErr = U_ZERO_ERROR; 379 uloc_toLanguageTag(likelyChars, output, outSize, FALSE, &uErr); 380 if (U_SUCCESS(uErr)) { 381 return; 382 } else { 383 ALOGD("uloc_toLanguageTag(\"%s\") failed: %s", likelyChars, 384 u_errorName(uErr)); 385 } 386 } else { 387 ALOGD("uloc_addLikelySubtags(\"%s\") failed: %s", 388 canonicalChars, u_errorName(uErr)); 389 } 390 } else { 391 ALOGD("uloc_canonicalize(\"%s\") failed: %s", locale, 392 u_errorName(uErr)); 393 } 394 // unable to build a proper language identifier 395 output[0] = '\0'; 396 } 397 398 static void setTextLocale(JNIEnv* env, jobject clazz, jlong objHandle, jstring locale) { 399 Paint* obj = reinterpret_cast<Paint*>(objHandle); 400 ScopedUtfChars localeChars(env, locale); 401 char langTag[ULOC_FULLNAME_CAPACITY]; 402 toLanguageTag(langTag, ULOC_FULLNAME_CAPACITY, localeChars.c_str()); 403 404 obj->setTextLocale(langTag); 405 } 406 407 static jboolean isElegantTextHeight(JNIEnv* env, jobject paint) { 408 NPE_CHECK_RETURN_ZERO(env, paint); 409 Paint* obj = getNativePaint(env, paint); 410 return obj->getFontVariant() == VARIANT_ELEGANT; 411 } 412 413 static void setElegantTextHeight(JNIEnv* env, jobject paint, jboolean aa) { 414 NPE_CHECK_RETURN_VOID(env, paint); 415 Paint* obj = getNativePaint(env, paint); 416 obj->setFontVariant(aa ? VARIANT_ELEGANT : VARIANT_DEFAULT); 417 } 418 419 static jfloat getTextSize(JNIEnv* env, jobject paint) { 420 NPE_CHECK_RETURN_ZERO(env, paint); 421 return SkScalarToFloat(getNativePaint(env, paint)->getTextSize()); 422 } 423 424 static void setTextSize(JNIEnv* env, jobject paint, jfloat textSize) { 425 NPE_CHECK_RETURN_VOID(env, paint); 426 getNativePaint(env, paint)->setTextSize(textSize); 427 } 428 429 static jfloat getTextScaleX(JNIEnv* env, jobject paint) { 430 NPE_CHECK_RETURN_ZERO(env, paint); 431 return SkScalarToFloat(getNativePaint(env, paint)->getTextScaleX()); 432 } 433 434 static void setTextScaleX(JNIEnv* env, jobject paint, jfloat scaleX) { 435 NPE_CHECK_RETURN_VOID(env, paint); 436 getNativePaint(env, paint)->setTextScaleX(scaleX); 437 } 438 439 static jfloat getTextSkewX(JNIEnv* env, jobject paint) { 440 NPE_CHECK_RETURN_ZERO(env, paint); 441 return SkScalarToFloat(getNativePaint(env, paint)->getTextSkewX()); 442 } 443 444 static void setTextSkewX(JNIEnv* env, jobject paint, jfloat skewX) { 445 NPE_CHECK_RETURN_VOID(env, paint); 446 getNativePaint(env, paint)->setTextSkewX(skewX); 447 } 448 449 static jfloat getLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle) { 450 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 451 return paint->getLetterSpacing(); 452 } 453 454 static void setLetterSpacing(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat letterSpacing) { 455 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 456 paint->setLetterSpacing(letterSpacing); 457 } 458 459 static void setFontFeatureSettings(JNIEnv* env, jobject clazz, jlong paintHandle, jstring settings) { 460 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 461 if (!settings) { 462 paint->setFontFeatureSettings(std::string()); 463 } else { 464 ScopedUtfChars settingsChars(env, settings); 465 paint->setFontFeatureSettings(std::string(settingsChars.c_str(), settingsChars.size())); 466 } 467 } 468 469 static jint getHyphenEdit(JNIEnv* env, jobject clazz, jlong paintHandle, jint hyphen) { 470 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 471 return paint->getHyphenEdit(); 472 } 473 474 static void setHyphenEdit(JNIEnv* env, jobject clazz, jlong paintHandle, jint hyphen) { 475 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 476 paint->setHyphenEdit((uint32_t)hyphen); 477 } 478 479 static SkScalar getMetricsInternal(JNIEnv* env, jobject jpaint, Paint::FontMetrics *metrics) { 480 const int kElegantTop = 2500; 481 const int kElegantBottom = -1000; 482 const int kElegantAscent = 1900; 483 const int kElegantDescent = -500; 484 const int kElegantLeading = 0; 485 Paint* paint = getNativePaint(env, jpaint); 486 TypefaceImpl* typeface = getNativeTypeface(env, jpaint); 487 typeface = TypefaceImpl_resolveDefault(typeface); 488 FakedFont baseFont = typeface->fFontCollection->baseFontFaked(typeface->fStyle); 489 float saveSkewX = paint->getTextSkewX(); 490 bool savefakeBold = paint->isFakeBoldText(); 491 MinikinFontSkia::populateSkPaint(paint, baseFont.font, baseFont.fakery); 492 SkScalar spacing = paint->getFontMetrics(metrics); 493 // The populateSkPaint call may have changed fake bold / text skew 494 // because we want to measure with those effects applied, so now 495 // restore the original settings. 496 paint->setTextSkewX(saveSkewX); 497 paint->setFakeBoldText(savefakeBold); 498 if (paint->getFontVariant() == VARIANT_ELEGANT) { 499 SkScalar size = paint->getTextSize(); 500 metrics->fTop = -size * kElegantTop / 2048; 501 metrics->fBottom = -size * kElegantBottom / 2048; 502 metrics->fAscent = -size * kElegantAscent / 2048; 503 metrics->fDescent = -size * kElegantDescent / 2048; 504 metrics->fLeading = size * kElegantLeading / 2048; 505 spacing = metrics->fDescent - metrics->fAscent + metrics->fLeading; 506 } 507 return spacing; 508 } 509 510 static jfloat ascent(JNIEnv* env, jobject paint) { 511 NPE_CHECK_RETURN_ZERO(env, paint); 512 Paint::FontMetrics metrics; 513 getMetricsInternal(env, paint, &metrics); 514 return SkScalarToFloat(metrics.fAscent); 515 } 516 517 static jfloat descent(JNIEnv* env, jobject paint) { 518 NPE_CHECK_RETURN_ZERO(env, paint); 519 Paint::FontMetrics metrics; 520 getMetricsInternal(env, paint, &metrics); 521 return SkScalarToFloat(metrics.fDescent); 522 } 523 524 static jfloat getFontMetrics(JNIEnv* env, jobject paint, jobject metricsObj) { 525 NPE_CHECK_RETURN_ZERO(env, paint); 526 Paint::FontMetrics metrics; 527 SkScalar spacing = getMetricsInternal(env, paint, &metrics); 528 529 if (metricsObj) { 530 SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class)); 531 env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop)); 532 env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent)); 533 env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent)); 534 env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom)); 535 env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading)); 536 } 537 return SkScalarToFloat(spacing); 538 } 539 540 static jint getFontMetricsInt(JNIEnv* env, jobject paint, jobject metricsObj) { 541 NPE_CHECK_RETURN_ZERO(env, paint); 542 Paint::FontMetrics metrics; 543 544 getMetricsInternal(env, paint, &metrics); 545 int ascent = SkScalarRoundToInt(metrics.fAscent); 546 int descent = SkScalarRoundToInt(metrics.fDescent); 547 int leading = SkScalarRoundToInt(metrics.fLeading); 548 549 if (metricsObj) { 550 SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class)); 551 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloorToInt(metrics.fTop)); 552 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent); 553 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent); 554 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeilToInt(metrics.fBottom)); 555 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading); 556 } 557 return descent - ascent + leading; 558 } 559 560 static jfloat measureText_CIII(JNIEnv* env, jobject jpaint, jcharArray text, jint index, jint count, 561 jint bidiFlags) { 562 NPE_CHECK_RETURN_ZERO(env, jpaint); 563 NPE_CHECK_RETURN_ZERO(env, text); 564 565 size_t textLength = env->GetArrayLength(text); 566 if ((index | count) < 0 || (size_t)(index + count) > textLength) { 567 doThrowAIOOBE(env); 568 return 0; 569 } 570 if (count == 0) { 571 return 0; 572 } 573 574 Paint* paint = getNativePaint(env, jpaint); 575 const jchar* textArray = env->GetCharArrayElements(text, NULL); 576 jfloat result = 0; 577 578 Layout layout; 579 TypefaceImpl* typeface = getNativeTypeface(env, jpaint); 580 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, textArray, index, count, textLength); 581 result = layout.getAdvance(); 582 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT); 583 return result; 584 } 585 586 static jfloat measureText_StringIII(JNIEnv* env, jobject jpaint, jstring text, jint start, jint end, 587 jint bidiFlags) { 588 NPE_CHECK_RETURN_ZERO(env, jpaint); 589 NPE_CHECK_RETURN_ZERO(env, text); 590 591 size_t textLength = env->GetStringLength(text); 592 int count = end - start; 593 if ((start | count) < 0 || (size_t)end > textLength) { 594 doThrowAIOOBE(env); 595 return 0; 596 } 597 if (count == 0) { 598 return 0; 599 } 600 601 const jchar* textArray = env->GetStringChars(text, NULL); 602 Paint* paint = getNativePaint(env, jpaint); 603 jfloat width = 0; 604 605 Layout layout; 606 TypefaceImpl* typeface = getNativeTypeface(env, jpaint); 607 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, textArray, start, count, textLength); 608 width = layout.getAdvance(); 609 610 env->ReleaseStringChars(text, textArray); 611 return width; 612 } 613 614 static jfloat measureText_StringI(JNIEnv* env, jobject jpaint, jstring text, jint bidiFlags) { 615 NPE_CHECK_RETURN_ZERO(env, jpaint); 616 NPE_CHECK_RETURN_ZERO(env, text); 617 618 size_t textLength = env->GetStringLength(text); 619 if (textLength == 0) { 620 return 0; 621 } 622 623 const jchar* textArray = env->GetStringChars(text, NULL); 624 Paint* paint = getNativePaint(env, jpaint); 625 jfloat width = 0; 626 627 Layout layout; 628 TypefaceImpl* typeface = getNativeTypeface(env, jpaint); 629 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, textArray, 0, textLength, textLength); 630 width = layout.getAdvance(); 631 632 env->ReleaseStringChars(text, textArray); 633 return width; 634 } 635 636 static int dotextwidths(JNIEnv* env, Paint* paint, TypefaceImpl* typeface, const jchar text[], int count, 637 jfloatArray widths, jint bidiFlags) { 638 NPE_CHECK_RETURN_ZERO(env, paint); 639 NPE_CHECK_RETURN_ZERO(env, text); 640 641 if (count < 0 || !widths) { 642 doThrowAIOOBE(env); 643 return 0; 644 } 645 if (count == 0) { 646 return 0; 647 } 648 size_t widthsLength = env->GetArrayLength(widths); 649 if ((size_t)count > widthsLength) { 650 doThrowAIOOBE(env); 651 return 0; 652 } 653 654 AutoJavaFloatArray autoWidths(env, widths, count); 655 jfloat* widthsArray = autoWidths.ptr(); 656 657 Layout layout; 658 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, 0, count, count); 659 layout.getAdvances(widthsArray); 660 661 return count; 662 } 663 664 static jint getTextWidths___CIII_F(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray text, 665 jint index, jint count, jint bidiFlags, jfloatArray widths) { 666 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 667 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 668 const jchar* textArray = env->GetCharArrayElements(text, NULL); 669 count = dotextwidths(env, paint, typeface, textArray + index, count, widths, bidiFlags); 670 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), 671 JNI_ABORT); 672 return count; 673 } 674 675 static jint getTextWidths__StringIII_F(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring text, 676 jint start, jint end, jint bidiFlags, jfloatArray widths) { 677 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 678 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 679 const jchar* textArray = env->GetStringChars(text, NULL); 680 int count = dotextwidths(env, paint, typeface, textArray + start, end - start, widths, bidiFlags); 681 env->ReleaseStringChars(text, textArray); 682 return count; 683 } 684 685 static jfloat doTextRunAdvances(JNIEnv *env, Paint *paint, TypefaceImpl* typeface, const jchar *text, 686 jint start, jint count, jint contextCount, jboolean isRtl, 687 jfloatArray advances, jint advancesIndex) { 688 NPE_CHECK_RETURN_ZERO(env, paint); 689 NPE_CHECK_RETURN_ZERO(env, text); 690 691 if ((start | count | contextCount | advancesIndex) < 0 || contextCount < count) { 692 doThrowAIOOBE(env); 693 return 0; 694 } 695 if (count == 0) { 696 return 0; 697 } 698 if (advances) { 699 size_t advancesLength = env->GetArrayLength(advances); 700 if ((size_t)count > advancesLength) { 701 doThrowAIOOBE(env); 702 return 0; 703 } 704 } 705 jfloat* advancesArray = new jfloat[count]; 706 jfloat totalAdvance = 0; 707 708 int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR; 709 710 Layout layout; 711 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, start, count, contextCount); 712 layout.getAdvances(advancesArray); 713 totalAdvance = layout.getAdvance(); 714 715 if (advances != NULL) { 716 env->SetFloatArrayRegion(advances, advancesIndex, count, advancesArray); 717 } 718 delete [] advancesArray; 719 return totalAdvance; 720 } 721 722 static jfloat getTextRunAdvances___CIIIIZ_FI(JNIEnv* env, jobject clazz, jlong paintHandle, 723 jlong typefaceHandle, 724 jcharArray text, jint index, jint count, jint contextIndex, jint contextCount, 725 jboolean isRtl, jfloatArray advances, jint advancesIndex) { 726 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 727 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 728 jchar* textArray = env->GetCharArrayElements(text, NULL); 729 jfloat result = doTextRunAdvances(env, paint, typeface, textArray + contextIndex, 730 index - contextIndex, count, contextCount, isRtl, advances, advancesIndex); 731 env->ReleaseCharArrayElements(text, textArray, JNI_ABORT); 732 return result; 733 } 734 735 static jfloat getTextRunAdvances__StringIIIIZ_FI(JNIEnv* env, jobject clazz, jlong paintHandle, 736 jlong typefaceHandle, 737 jstring text, jint start, jint end, jint contextStart, jint contextEnd, jboolean isRtl, 738 jfloatArray advances, jint advancesIndex) { 739 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 740 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 741 const jchar* textArray = env->GetStringChars(text, NULL); 742 jfloat result = doTextRunAdvances(env, paint, typeface, textArray + contextStart, 743 start - contextStart, end - start, contextEnd - contextStart, isRtl, 744 advances, advancesIndex); 745 env->ReleaseStringChars(text, textArray); 746 return result; 747 } 748 749 static jint doTextRunCursor(JNIEnv *env, Paint* paint, const jchar *text, jint start, 750 jint count, jint flags, jint offset, jint opt) { 751 GraphemeBreak::MoveOpt moveOpt = GraphemeBreak::MoveOpt(opt); 752 size_t result = GraphemeBreak::getTextRunCursor(text, start, count, offset, moveOpt); 753 return static_cast<jint>(result); 754 } 755 756 static jint getTextRunCursor___C(JNIEnv* env, jobject clazz, jlong paintHandle, jcharArray text, 757 jint contextStart, jint contextCount, jint dir, jint offset, jint cursorOpt) { 758 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 759 jchar* textArray = env->GetCharArrayElements(text, NULL); 760 jint result = doTextRunCursor(env, paint, textArray, contextStart, contextCount, dir, 761 offset, cursorOpt); 762 env->ReleaseCharArrayElements(text, textArray, JNI_ABORT); 763 return result; 764 } 765 766 static jint getTextRunCursor__String(JNIEnv* env, jobject clazz, jlong paintHandle, jstring text, 767 jint contextStart, jint contextEnd, jint dir, jint offset, jint cursorOpt) { 768 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 769 const jchar* textArray = env->GetStringChars(text, NULL); 770 jint result = doTextRunCursor(env, paint, textArray, contextStart, 771 contextEnd - contextStart, dir, offset, cursorOpt); 772 env->ReleaseStringChars(text, textArray); 773 return result; 774 } 775 776 class GetTextFunctor { 777 public: 778 GetTextFunctor(const Layout& layout, SkPath* path, jfloat x, jfloat y, Paint* paint, 779 uint16_t* glyphs, SkPoint* pos) 780 : layout(layout), path(path), x(x), y(y), paint(paint), glyphs(glyphs), pos(pos) { 781 } 782 783 void operator()(size_t start, size_t end) { 784 for (size_t i = start; i < end; i++) { 785 glyphs[i] = layout.getGlyphId(i); 786 pos[i].fX = x + layout.getX(i); 787 pos[i].fY = y + layout.getY(i); 788 } 789 if (start == 0) { 790 paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, path); 791 } else { 792 paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, &tmpPath); 793 path->addPath(tmpPath); 794 } 795 } 796 private: 797 const Layout& layout; 798 SkPath* path; 799 jfloat x; 800 jfloat y; 801 Paint* paint; 802 uint16_t* glyphs; 803 SkPoint* pos; 804 SkPath tmpPath; 805 }; 806 807 static void getTextPath(JNIEnv* env, Paint* paint, TypefaceImpl* typeface, const jchar* text, 808 jint count, jint bidiFlags, jfloat x, jfloat y, SkPath* path) { 809 Layout layout; 810 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, text, 0, count, count); 811 size_t nGlyphs = layout.nGlyphs(); 812 uint16_t* glyphs = new uint16_t[nGlyphs]; 813 SkPoint* pos = new SkPoint[nGlyphs]; 814 815 x += MinikinUtils::xOffsetForTextAlign(paint, layout); 816 Paint::Align align = paint->getTextAlign(); 817 paint->setTextAlign(Paint::kLeft_Align); 818 paint->setTextEncoding(Paint::kGlyphID_TextEncoding); 819 GetTextFunctor f(layout, path, x, y, paint, glyphs, pos); 820 MinikinUtils::forFontRun(layout, paint, f); 821 paint->setTextAlign(align); 822 delete[] glyphs; 823 delete[] pos; 824 } 825 826 static void getTextPath___C(JNIEnv* env, jobject clazz, jlong paintHandle, 827 jlong typefaceHandle, jint bidiFlags, 828 jcharArray text, jint index, jint count, jfloat x, jfloat y, jlong pathHandle) { 829 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 830 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 831 SkPath* path = reinterpret_cast<SkPath*>(pathHandle); 832 const jchar* textArray = env->GetCharArrayElements(text, NULL); 833 getTextPath(env, paint, typeface, textArray + index, count, bidiFlags, x, y, path); 834 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT); 835 } 836 837 static void getTextPath__String(JNIEnv* env, jobject clazz, jlong paintHandle, 838 jlong typefaceHandle, jint bidiFlags, 839 jstring text, jint start, jint end, jfloat x, jfloat y, jlong pathHandle) { 840 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 841 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 842 SkPath* path = reinterpret_cast<SkPath*>(pathHandle); 843 const jchar* textArray = env->GetStringChars(text, NULL); 844 getTextPath(env, paint, typeface, textArray + start, end - start, bidiFlags, x, y, path); 845 env->ReleaseStringChars(text, textArray); 846 } 847 848 static void setShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat radius, 849 jfloat dx, jfloat dy, jint color) { 850 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 851 if (radius <= 0) { 852 paint->setLooper(NULL); 853 } 854 else { 855 SkScalar sigma = android::uirenderer::Blur::convertRadiusToSigma(radius); 856 paint->setLooper(SkBlurDrawLooper::Create((SkColor)color, sigma, dx, dy))->unref(); 857 } 858 } 859 860 static jboolean hasShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle) { 861 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 862 return paint->getLooper() && paint->getLooper()->asABlurShadow(NULL); 863 } 864 865 static int breakText(JNIEnv* env, const Paint& paint, TypefaceImpl* typeface, const jchar text[], 866 int count, float maxWidth, jint bidiFlags, jfloatArray jmeasured, 867 const bool forwardScan) { 868 size_t measuredCount = 0; 869 float measured = 0; 870 871 Layout layout; 872 MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, 0, count, count); 873 float* advances = new float[count]; 874 layout.getAdvances(advances); 875 876 for (int i = 0; i < count; i++) { 877 // traverse in the given direction 878 int index = forwardScan ? i : (count - i - 1); 879 float width = advances[index]; 880 if (measured + width > maxWidth) { 881 break; 882 } 883 // properly handle clusters when scanning backwards 884 if (forwardScan || width != 0.0f) { 885 measuredCount = i + 1; 886 } 887 measured += width; 888 } 889 delete[] advances; 890 891 if (jmeasured && env->GetArrayLength(jmeasured) > 0) { 892 AutoJavaFloatArray autoMeasured(env, jmeasured, 1); 893 jfloat* array = autoMeasured.ptr(); 894 array[0] = measured; 895 } 896 return measuredCount; 897 } 898 899 static jint breakTextC(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray jtext, 900 jint index, jint count, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) { 901 NPE_CHECK_RETURN_ZERO(env, jtext); 902 903 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 904 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 905 906 bool forwardTextDirection; 907 if (count < 0) { 908 forwardTextDirection = false; 909 count = -count; 910 } 911 else { 912 forwardTextDirection = true; 913 } 914 915 if ((index < 0) || (index + count > env->GetArrayLength(jtext))) { 916 doThrowAIOOBE(env); 917 return 0; 918 } 919 920 const jchar* text = env->GetCharArrayElements(jtext, NULL); 921 count = breakText(env, *paint, typeface, text + index, count, maxWidth, 922 bidiFlags, jmeasuredWidth, forwardTextDirection); 923 env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text), 924 JNI_ABORT); 925 return count; 926 } 927 928 static jint breakTextS(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring jtext, 929 jboolean forwards, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) { 930 NPE_CHECK_RETURN_ZERO(env, jtext); 931 932 Paint* paint = reinterpret_cast<Paint*>(paintHandle); 933 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 934 935 int count = env->GetStringLength(jtext); 936 const jchar* text = env->GetStringChars(jtext, NULL); 937 count = breakText(env, *paint, typeface, text, count, maxWidth, bidiFlags, jmeasuredWidth, forwards); 938 env->ReleaseStringChars(jtext, text); 939 return count; 940 } 941 942 static void doTextBounds(JNIEnv* env, const jchar* text, int count, jobject bounds, 943 const Paint& paint, TypefaceImpl* typeface, jint bidiFlags) { 944 SkRect r; 945 SkIRect ir; 946 947 Layout layout; 948 MinikinUtils::doLayout(&layout, &paint, bidiFlags, typeface, text, 0, count, count); 949 MinikinRect rect; 950 layout.getBounds(&rect); 951 r.fLeft = rect.mLeft; 952 r.fTop = rect.mTop; 953 r.fRight = rect.mRight; 954 r.fBottom = rect.mBottom; 955 r.roundOut(&ir); 956 GraphicsJNI::irect_to_jrect(ir, env, bounds); 957 } 958 959 static void getStringBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle, 960 jstring text, jint start, jint end, jint bidiFlags, jobject bounds) { 961 const Paint* paint = reinterpret_cast<Paint*>(paintHandle);; 962 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 963 const jchar* textArray = env->GetStringChars(text, NULL); 964 doTextBounds(env, textArray + start, end - start, bounds, *paint, typeface, bidiFlags); 965 env->ReleaseStringChars(text, textArray); 966 } 967 968 static void getCharArrayBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle, 969 jcharArray text, jint index, jint count, jint bidiFlags, jobject bounds) { 970 const Paint* paint = reinterpret_cast<Paint*>(paintHandle); 971 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 972 const jchar* textArray = env->GetCharArrayElements(text, NULL); 973 doTextBounds(env, textArray + index, count, bounds, *paint, typeface, bidiFlags); 974 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), 975 JNI_ABORT); 976 } 977 978 static jboolean layoutContainsNotdef(const Layout& layout) { 979 for (size_t i = 0; i < layout.nGlyphs(); i++) { 980 if (layout.getGlyphId(i) == 0) { 981 return true; 982 } 983 } 984 return false; 985 } 986 987 static jboolean hasGlyphVariation(const Paint* paint, TypefaceImpl* typeface, jint bidiFlags, 988 const jchar* chars, size_t size) { 989 // TODO: query font for whether character has variation selector; requires a corresponding 990 // function in Minikin. 991 return false; 992 } 993 994 static jboolean hasGlyph(JNIEnv *env, jclass, jlong paintHandle, jlong typefaceHandle, 995 jint bidiFlags, jstring string) { 996 const Paint* paint = reinterpret_cast<Paint*>(paintHandle); 997 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 998 ScopedStringChars str(env, string); 999 1000 /* start by rejecting variation selectors (not supported yet) */ 1001 size_t nChars = 0; 1002 for (size_t i = 0; i < str.size(); i++) { 1003 jchar c = str[i]; 1004 if (0xDC00 <= c && c <= 0xDFFF) { 1005 // invalid UTF-16, unpaired trailing surrogate 1006 return false; 1007 } else if (0xD800 <= c && c <= 0xDBFF) { 1008 if (i + 1 == str.size()) { 1009 // invalid UTF-16, unpaired leading surrogate at end of string 1010 return false; 1011 } 1012 i++; 1013 jchar c2 = str[i]; 1014 if (!(0xDC00 <= c2 && c2 <= 0xDFFF)) { 1015 // invalid UTF-16, unpaired leading surrogate 1016 return false; 1017 } 1018 // UTF-16 encoding of range U+E0100..U+E01EF is DB40 DD00 .. DB40 DDEF 1019 if (c == 0xDB40 && 0xDD00 <= c2 && c2 <= 0xDDEF) { 1020 return hasGlyphVariation(paint, typeface, bidiFlags, str.get(), str.size()); 1021 } 1022 } else if (0xFE00 <= c && c <= 0xFE0F) { 1023 return hasGlyphVariation(paint, typeface, bidiFlags, str.get(), str.size()); 1024 } 1025 nChars++; 1026 } 1027 Layout layout; 1028 MinikinUtils::doLayout(&layout, paint, bidiFlags, typeface, str.get(), 0, str.size(), 1029 str.size()); 1030 size_t nGlyphs = layout.nGlyphs(); 1031 if (nGlyphs != 1 && nChars > 1) { 1032 // multiple-character input, and was not a ligature 1033 // TODO: handle ZWJ/ZWNJ characters specially so we can detect certain ligatures 1034 // in joining scripts, such as Arabic and Mongolian. 1035 return false; 1036 } 1037 return nGlyphs > 0 && !layoutContainsNotdef(layout); 1038 } 1039 1040}; 1041 1042static JNINativeMethod methods[] = { 1043 {"finalizer", "(J)V", (void*) PaintGlue::finalizer}, 1044 {"native_init","()J", (void*) PaintGlue::init}, 1045 {"native_initWithPaint","(J)J", (void*) PaintGlue::initWithPaint}, 1046 1047 {"native_reset","!(J)V", (void*) PaintGlue::reset}, 1048 {"native_set","!(JJ)V", (void*) PaintGlue::assign}, 1049 {"getFlags","!()I", (void*) PaintGlue::getFlags}, 1050 {"setFlags","!(I)V", (void*) PaintGlue::setFlags}, 1051 {"getHinting","!()I", (void*) PaintGlue::getHinting}, 1052 {"setHinting","!(I)V", (void*) PaintGlue::setHinting}, 1053 {"setAntiAlias","!(Z)V", (void*) PaintGlue::setAntiAlias}, 1054 {"setSubpixelText","!(Z)V", (void*) PaintGlue::setSubpixelText}, 1055 {"setLinearText","!(Z)V", (void*) PaintGlue::setLinearText}, 1056 {"setUnderlineText","!(Z)V", (void*) PaintGlue::setUnderlineText}, 1057 {"setStrikeThruText","!(Z)V", (void*) PaintGlue::setStrikeThruText}, 1058 {"setFakeBoldText","!(Z)V", (void*) PaintGlue::setFakeBoldText}, 1059 {"setFilterBitmap","!(Z)V", (void*) PaintGlue::setFilterBitmap}, 1060 {"setDither","!(Z)V", (void*) PaintGlue::setDither}, 1061 {"native_getStyle","!(J)I", (void*) PaintGlue::getStyle}, 1062 {"native_setStyle","!(JI)V", (void*) PaintGlue::setStyle}, 1063 {"getColor","!()I", (void*) PaintGlue::getColor}, 1064 {"setColor","!(I)V", (void*) PaintGlue::setColor}, 1065 {"getAlpha","!()I", (void*) PaintGlue::getAlpha}, 1066 {"setAlpha","!(I)V", (void*) PaintGlue::setAlpha}, 1067 {"getStrokeWidth","!()F", (void*) PaintGlue::getStrokeWidth}, 1068 {"setStrokeWidth","!(F)V", (void*) PaintGlue::setStrokeWidth}, 1069 {"getStrokeMiter","!()F", (void*) PaintGlue::getStrokeMiter}, 1070 {"setStrokeMiter","!(F)V", (void*) PaintGlue::setStrokeMiter}, 1071 {"native_getStrokeCap","!(J)I", (void*) PaintGlue::getStrokeCap}, 1072 {"native_setStrokeCap","!(JI)V", (void*) PaintGlue::setStrokeCap}, 1073 {"native_getStrokeJoin","!(J)I", (void*) PaintGlue::getStrokeJoin}, 1074 {"native_setStrokeJoin","!(JI)V", (void*) PaintGlue::setStrokeJoin}, 1075 {"native_getFillPath","!(JJJ)Z", (void*) PaintGlue::getFillPath}, 1076 {"native_setShader","!(JJ)J", (void*) PaintGlue::setShader}, 1077 {"native_setColorFilter","!(JJ)J", (void*) PaintGlue::setColorFilter}, 1078 {"native_setXfermode","!(JJ)J", (void*) PaintGlue::setXfermode}, 1079 {"native_setPathEffect","!(JJ)J", (void*) PaintGlue::setPathEffect}, 1080 {"native_setMaskFilter","!(JJ)J", (void*) PaintGlue::setMaskFilter}, 1081 {"native_setTypeface","!(JJ)J", (void*) PaintGlue::setTypeface}, 1082 {"native_setRasterizer","!(JJ)J", (void*) PaintGlue::setRasterizer}, 1083 {"native_getTextAlign","!(J)I", (void*) PaintGlue::getTextAlign}, 1084 {"native_setTextAlign","!(JI)V", (void*) PaintGlue::setTextAlign}, 1085 {"native_setTextLocale","!(JLjava/lang/String;)V", (void*) PaintGlue::setTextLocale}, 1086 {"isElegantTextHeight","!()Z", (void*) PaintGlue::isElegantTextHeight}, 1087 {"setElegantTextHeight","!(Z)V", (void*) PaintGlue::setElegantTextHeight}, 1088 {"getTextSize","!()F", (void*) PaintGlue::getTextSize}, 1089 {"setTextSize","!(F)V", (void*) PaintGlue::setTextSize}, 1090 {"getTextScaleX","!()F", (void*) PaintGlue::getTextScaleX}, 1091 {"setTextScaleX","!(F)V", (void*) PaintGlue::setTextScaleX}, 1092 {"getTextSkewX","!()F", (void*) PaintGlue::getTextSkewX}, 1093 {"setTextSkewX","!(F)V", (void*) PaintGlue::setTextSkewX}, 1094 {"native_getLetterSpacing","!(J)F", (void*) PaintGlue::getLetterSpacing}, 1095 {"native_setLetterSpacing","!(JF)V", (void*) PaintGlue::setLetterSpacing}, 1096 {"native_setFontFeatureSettings","(JLjava/lang/String;)V", (void*) PaintGlue::setFontFeatureSettings}, 1097 {"native_getHyphenEdit", "!(J)I", (void*) PaintGlue::getHyphenEdit}, 1098 {"native_setHyphenEdit", "!(JI)V", (void*) PaintGlue::setHyphenEdit}, 1099 {"ascent","!()F", (void*) PaintGlue::ascent}, 1100 {"descent","!()F", (void*) PaintGlue::descent}, 1101 1102 {"getFontMetrics", "(Landroid/graphics/Paint$FontMetrics;)F", (void*)PaintGlue::getFontMetrics}, 1103 {"getFontMetricsInt", "(Landroid/graphics/Paint$FontMetricsInt;)I", (void*)PaintGlue::getFontMetricsInt}, 1104 {"native_measureText","([CIII)F", (void*) PaintGlue::measureText_CIII}, 1105 {"native_measureText","(Ljava/lang/String;I)F", (void*) PaintGlue::measureText_StringI}, 1106 {"native_measureText","(Ljava/lang/String;III)F", (void*) PaintGlue::measureText_StringIII}, 1107 {"native_breakText","(JJ[CIIFI[F)I", (void*) PaintGlue::breakTextC}, 1108 {"native_breakText","(JJLjava/lang/String;ZFI[F)I", (void*) PaintGlue::breakTextS}, 1109 {"native_getTextWidths","(JJ[CIII[F)I", (void*) PaintGlue::getTextWidths___CIII_F}, 1110 {"native_getTextWidths","(JJLjava/lang/String;III[F)I", (void*) PaintGlue::getTextWidths__StringIII_F}, 1111 {"native_getTextRunAdvances","(JJ[CIIIIZ[FI)F", 1112 (void*) PaintGlue::getTextRunAdvances___CIIIIZ_FI}, 1113 {"native_getTextRunAdvances","(JJLjava/lang/String;IIIIZ[FI)F", 1114 (void*) PaintGlue::getTextRunAdvances__StringIIIIZ_FI}, 1115 1116 {"native_getTextRunCursor", "(J[CIIIII)I", (void*) PaintGlue::getTextRunCursor___C}, 1117 {"native_getTextRunCursor", "(JLjava/lang/String;IIIII)I", 1118 (void*) PaintGlue::getTextRunCursor__String}, 1119 {"native_getTextPath","(JJI[CIIFFJ)V", (void*) PaintGlue::getTextPath___C}, 1120 {"native_getTextPath","(JJILjava/lang/String;IIFFJ)V", (void*) PaintGlue::getTextPath__String}, 1121 {"nativeGetStringBounds", "(JJLjava/lang/String;IIILandroid/graphics/Rect;)V", 1122 (void*) PaintGlue::getStringBounds }, 1123 {"nativeGetCharArrayBounds", "(JJ[CIIILandroid/graphics/Rect;)V", 1124 (void*) PaintGlue::getCharArrayBounds }, 1125 {"native_hasGlyph", "(JJILjava/lang/String;)Z", (void*) PaintGlue::hasGlyph }, 1126 1127 {"native_setShadowLayer", "!(JFFFI)V", (void*)PaintGlue::setShadowLayer}, 1128 {"native_hasShadowLayer", "!(J)Z", (void*)PaintGlue::hasShadowLayer} 1129}; 1130 1131int register_android_graphics_Paint(JNIEnv* env) { 1132 gFontMetrics_class = FindClassOrDie(env, "android/graphics/Paint$FontMetrics"); 1133 gFontMetrics_class = MakeGlobalRefOrDie(env, gFontMetrics_class); 1134 1135 gFontMetrics_fieldID.top = GetFieldIDOrDie(env, gFontMetrics_class, "top", "F"); 1136 gFontMetrics_fieldID.ascent = GetFieldIDOrDie(env, gFontMetrics_class, "ascent", "F"); 1137 gFontMetrics_fieldID.descent = GetFieldIDOrDie(env, gFontMetrics_class, "descent", "F"); 1138 gFontMetrics_fieldID.bottom = GetFieldIDOrDie(env, gFontMetrics_class, "bottom", "F"); 1139 gFontMetrics_fieldID.leading = GetFieldIDOrDie(env, gFontMetrics_class, "leading", "F"); 1140 1141 gFontMetricsInt_class = FindClassOrDie(env, "android/graphics/Paint$FontMetricsInt"); 1142 gFontMetricsInt_class = MakeGlobalRefOrDie(env, gFontMetricsInt_class); 1143 1144 gFontMetricsInt_fieldID.top = GetFieldIDOrDie(env, gFontMetricsInt_class, "top", "I"); 1145 gFontMetricsInt_fieldID.ascent = GetFieldIDOrDie(env, gFontMetricsInt_class, "ascent", "I"); 1146 gFontMetricsInt_fieldID.descent = GetFieldIDOrDie(env, gFontMetricsInt_class, "descent", "I"); 1147 gFontMetricsInt_fieldID.bottom = GetFieldIDOrDie(env, gFontMetricsInt_class, "bottom", "I"); 1148 gFontMetricsInt_fieldID.leading = GetFieldIDOrDie(env, gFontMetricsInt_class, "leading", "I"); 1149 1150 gPaint_class = MakeGlobalRefOrDie(env, FindClassOrDie(env, "android/graphics/Paint")); 1151 gPaint_nativeInstanceID = GetFieldIDOrDie(env, gPaint_class, "mNativePaint", "J"); 1152 gPaint_nativeTypefaceID = GetFieldIDOrDie(env, gPaint_class, "mNativeTypeface", "J"); 1153 1154 return RegisterMethodsOrDie(env, "android/graphics/Paint", methods, NELEM(methods)); 1155} 1156 1157} 1158