Paint.cpp revision e368b6bcfd499543a876b4cae02f1ca563ff1cb6
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 <android_runtime/AndroidRuntime.h> 25#include <ScopedUtfChars.h> 26 27#include "SkBlurDrawLooper.h" 28#include "SkColorFilter.h" 29#include "SkMaskFilter.h" 30#include "SkRasterizer.h" 31#include "SkShader.h" 32#include "SkTypeface.h" 33#include "SkXfermode.h" 34#include "unicode/uloc.h" 35#include "unicode/ushape.h" 36#include "utils/Blur.h" 37#include "TextLayout.h" 38 39#ifdef USE_MINIKIN 40#include <minikin/GraphemeBreak.h> 41#include <minikin/Layout.h> 42#include "MinikinSkia.h" 43#include "MinikinUtils.h" 44#endif 45 46// temporary for debugging 47#include <Caches.h> 48#include <utils/Log.h> 49 50namespace android { 51 52struct JMetricsID { 53 jfieldID top; 54 jfieldID ascent; 55 jfieldID descent; 56 jfieldID bottom; 57 jfieldID leading; 58}; 59 60static jclass gFontMetrics_class; 61static JMetricsID gFontMetrics_fieldID; 62 63static jclass gFontMetricsInt_class; 64static JMetricsID gFontMetricsInt_fieldID; 65 66static void defaultSettingsForAndroid(SkPaint* paint) { 67 // GlyphID encoding is required because we are using Harfbuzz shaping 68 paint->setTextEncoding(SkPaint::kGlyphID_TextEncoding); 69 70 SkPaintOptionsAndroid paintOpts = paint->getPaintOptionsAndroid(); 71 paintOpts.setUseFontFallbacks(true); 72 paint->setPaintOptionsAndroid(paintOpts); 73} 74 75class SkPaintGlue { 76public: 77 enum MoveOpt { 78 AFTER, AT_OR_AFTER, BEFORE, AT_OR_BEFORE, AT 79 }; 80 81 static void finalizer(JNIEnv* env, jobject clazz, jlong objHandle) { 82 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 83 delete obj; 84 } 85 86 static jlong init(JNIEnv* env, jobject clazz) { 87 SkPaint* obj = new SkPaint(); 88 defaultSettingsForAndroid(obj); 89 return reinterpret_cast<jlong>(obj); 90 } 91 92 static jlong initWithPaint(JNIEnv* env, jobject clazz, jlong paintHandle) { 93 SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle); 94 SkPaint* obj = new SkPaint(*paint); 95 return reinterpret_cast<jlong>(obj); 96 } 97 98 static void reset(JNIEnv* env, jobject clazz, jlong objHandle) { 99 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 100 obj->reset(); 101 defaultSettingsForAndroid(obj); 102 } 103 104 static void assign(JNIEnv* env, jobject clazz, jlong dstPaintHandle, jlong srcPaintHandle) { 105 SkPaint* dst = reinterpret_cast<SkPaint*>(dstPaintHandle); 106 const SkPaint* src = reinterpret_cast<SkPaint*>(srcPaintHandle); 107 *dst = *src; 108 } 109 110 // Equivalent to the Java Paint's FILTER_BITMAP_FLAG. 111 static const uint32_t sFilterBitmapFlag = 0x02; 112 113 static jint getFlags(JNIEnv* env, jobject paint) { 114 NPE_CHECK_RETURN_ZERO(env, paint); 115 SkPaint* nativePaint = GraphicsJNI::getNativePaint(env, paint); 116 uint32_t result = nativePaint->getFlags(); 117 result &= ~sFilterBitmapFlag; // Filtering no longer stored in this bit. Mask away. 118 if (nativePaint->getFilterLevel() != SkPaint::kNone_FilterLevel) { 119 result |= sFilterBitmapFlag; 120 } 121 return static_cast<jint>(result); 122 } 123 124 static void setFlags(JNIEnv* env, jobject paint, jint flags) { 125 NPE_CHECK_RETURN_VOID(env, paint); 126 SkPaint* nativePaint = GraphicsJNI::getNativePaint(env, paint); 127 // Instead of modifying 0x02, change the filter level. 128 nativePaint->setFilterLevel(flags & sFilterBitmapFlag 129 ? SkPaint::kLow_FilterLevel 130 : SkPaint::kNone_FilterLevel); 131 // Don't pass through filter flag, which is no longer stored in paint's flags. 132 flags &= ~sFilterBitmapFlag; 133 // Use the existing value for 0x02. 134 const uint32_t existing0x02Flag = nativePaint->getFlags() & sFilterBitmapFlag; 135 flags |= existing0x02Flag; 136 nativePaint->setFlags(flags); 137 } 138 139 static jint getHinting(JNIEnv* env, jobject paint) { 140 NPE_CHECK_RETURN_ZERO(env, paint); 141 return GraphicsJNI::getNativePaint(env, paint)->getHinting() 142 == SkPaint::kNo_Hinting ? 0 : 1; 143 } 144 145 static void setHinting(JNIEnv* env, jobject paint, jint mode) { 146 NPE_CHECK_RETURN_VOID(env, paint); 147 GraphicsJNI::getNativePaint(env, paint)->setHinting( 148 mode == 0 ? SkPaint::kNo_Hinting : SkPaint::kNormal_Hinting); 149 } 150 151 static void setAntiAlias(JNIEnv* env, jobject paint, jboolean aa) { 152 NPE_CHECK_RETURN_VOID(env, paint); 153 GraphicsJNI::getNativePaint(env, paint)->setAntiAlias(aa); 154 } 155 156 static void setLinearText(JNIEnv* env, jobject paint, jboolean linearText) { 157 NPE_CHECK_RETURN_VOID(env, paint); 158 GraphicsJNI::getNativePaint(env, paint)->setLinearText(linearText); 159 } 160 161 static void setSubpixelText(JNIEnv* env, jobject paint, jboolean subpixelText) { 162 NPE_CHECK_RETURN_VOID(env, paint); 163 GraphicsJNI::getNativePaint(env, paint)->setSubpixelText(subpixelText); 164 } 165 166 static void setUnderlineText(JNIEnv* env, jobject paint, jboolean underlineText) { 167 NPE_CHECK_RETURN_VOID(env, paint); 168 GraphicsJNI::getNativePaint(env, paint)->setUnderlineText(underlineText); 169 } 170 171 static void setStrikeThruText(JNIEnv* env, jobject paint, jboolean strikeThruText) { 172 NPE_CHECK_RETURN_VOID(env, paint); 173 GraphicsJNI::getNativePaint(env, paint)->setStrikeThruText(strikeThruText); 174 } 175 176 static void setFakeBoldText(JNIEnv* env, jobject paint, jboolean fakeBoldText) { 177 NPE_CHECK_RETURN_VOID(env, paint); 178 GraphicsJNI::getNativePaint(env, paint)->setFakeBoldText(fakeBoldText); 179 } 180 181 static void setFilterBitmap(JNIEnv* env, jobject paint, jboolean filterBitmap) { 182 NPE_CHECK_RETURN_VOID(env, paint); 183 GraphicsJNI::getNativePaint(env, paint)->setFilterLevel( 184 filterBitmap ? SkPaint::kLow_FilterLevel : SkPaint::kNone_FilterLevel); 185 } 186 187 static void setDither(JNIEnv* env, jobject paint, jboolean dither) { 188 NPE_CHECK_RETURN_VOID(env, paint); 189 GraphicsJNI::getNativePaint(env, paint)->setDither(dither); 190 } 191 192 static jint getStyle(JNIEnv* env, jobject clazz,jlong objHandle) { 193 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 194 return static_cast<jint>(obj->getStyle()); 195 } 196 197 static void setStyle(JNIEnv* env, jobject clazz, jlong objHandle, jint styleHandle) { 198 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 199 SkPaint::Style style = static_cast<SkPaint::Style>(styleHandle); 200 obj->setStyle(style); 201 } 202 203 static jint getColor(JNIEnv* env, jobject paint) { 204 NPE_CHECK_RETURN_ZERO(env, paint); 205 int color; 206 color = GraphicsJNI::getNativePaint(env, paint)->getColor(); 207 return static_cast<jint>(color); 208 } 209 210 static jint getAlpha(JNIEnv* env, jobject paint) { 211 NPE_CHECK_RETURN_ZERO(env, paint); 212 int alpha; 213 alpha = GraphicsJNI::getNativePaint(env, paint)->getAlpha(); 214 return static_cast<jint>(alpha); 215 } 216 217 static void setColor(JNIEnv* env, jobject paint, jint color) { 218 NPE_CHECK_RETURN_VOID(env, paint); 219 GraphicsJNI::getNativePaint(env, paint)->setColor(color); 220 } 221 222 static void setAlpha(JNIEnv* env, jobject paint, jint a) { 223 NPE_CHECK_RETURN_VOID(env, paint); 224 GraphicsJNI::getNativePaint(env, paint)->setAlpha(a); 225 } 226 227 static jfloat getStrokeWidth(JNIEnv* env, jobject paint) { 228 NPE_CHECK_RETURN_ZERO(env, paint); 229 return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getStrokeWidth()); 230 } 231 232 static void setStrokeWidth(JNIEnv* env, jobject paint, jfloat width) { 233 NPE_CHECK_RETURN_VOID(env, paint); 234 GraphicsJNI::getNativePaint(env, paint)->setStrokeWidth(width); 235 } 236 237 static jfloat getStrokeMiter(JNIEnv* env, jobject paint) { 238 NPE_CHECK_RETURN_ZERO(env, paint); 239 return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getStrokeMiter()); 240 } 241 242 static void setStrokeMiter(JNIEnv* env, jobject paint, jfloat miter) { 243 NPE_CHECK_RETURN_VOID(env, paint); 244 GraphicsJNI::getNativePaint(env, paint)->setStrokeMiter(miter); 245 } 246 247 static jint getStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle) { 248 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 249 return static_cast<jint>(obj->getStrokeCap()); 250 } 251 252 static void setStrokeCap(JNIEnv* env, jobject clazz, jlong objHandle, jint capHandle) { 253 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 254 SkPaint::Cap cap = static_cast<SkPaint::Cap>(capHandle); 255 obj->setStrokeCap(cap); 256 } 257 258 static jint getStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle) { 259 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 260 return static_cast<jint>(obj->getStrokeJoin()); 261 } 262 263 static void setStrokeJoin(JNIEnv* env, jobject clazz, jlong objHandle, jint joinHandle) { 264 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 265 SkPaint::Join join = (SkPaint::Join) joinHandle; 266 obj->setStrokeJoin(join); 267 } 268 269 static jboolean getFillPath(JNIEnv* env, jobject clazz, jlong objHandle, jlong srcHandle, jlong dstHandle) { 270 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 271 SkPath* src = reinterpret_cast<SkPath*>(srcHandle); 272 SkPath* dst = reinterpret_cast<SkPath*>(dstHandle); 273 return obj->getFillPath(*src, dst) ? JNI_TRUE : JNI_FALSE; 274 } 275 276 static jlong setShader(JNIEnv* env, jobject clazz, jlong objHandle, jlong shaderHandle) { 277 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 278 SkShader* shader = reinterpret_cast<SkShader*>(shaderHandle); 279 return reinterpret_cast<jlong>(obj->setShader(shader)); 280 } 281 282 static jlong setColorFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong filterHandle) { 283 SkPaint* obj = reinterpret_cast<SkPaint *>(objHandle); 284 SkColorFilter* filter = reinterpret_cast<SkColorFilter *>(filterHandle); 285 return reinterpret_cast<jlong>(obj->setColorFilter(filter)); 286 } 287 288 static jlong setXfermode(JNIEnv* env, jobject clazz, jlong objHandle, jlong xfermodeHandle) { 289 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 290 SkXfermode* xfermode = reinterpret_cast<SkXfermode*>(xfermodeHandle); 291 return reinterpret_cast<jlong>(obj->setXfermode(xfermode)); 292 } 293 294 static jlong setPathEffect(JNIEnv* env, jobject clazz, jlong objHandle, jlong effectHandle) { 295 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 296 SkPathEffect* effect = reinterpret_cast<SkPathEffect*>(effectHandle); 297 return reinterpret_cast<jlong>(obj->setPathEffect(effect)); 298 } 299 300 static jlong setMaskFilter(JNIEnv* env, jobject clazz, jlong objHandle, jlong maskfilterHandle) { 301 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 302 SkMaskFilter* maskfilter = reinterpret_cast<SkMaskFilter*>(maskfilterHandle); 303 return reinterpret_cast<jlong>(obj->setMaskFilter(maskfilter)); 304 } 305 306 static jlong setTypeface(JNIEnv* env, jobject clazz, jlong objHandle, jlong typefaceHandle) { 307#ifndef USE_MINIKIN 308 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 309 SkTypeface* typeface = reinterpret_cast<SkTypeface*>(typefaceHandle); 310 return reinterpret_cast<jlong>(obj->setTypeface(typeface)); 311#else 312 // TODO(raph): not yet implemented 313 return NULL; 314#endif 315 } 316 317 static jlong setRasterizer(JNIEnv* env, jobject clazz, jlong objHandle, jlong rasterizerHandle) { 318 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 319 SkAutoTUnref<SkRasterizer> rasterizer(GraphicsJNI::refNativeRasterizer(rasterizerHandle)); 320 return reinterpret_cast<jlong>(obj->setRasterizer(rasterizer)); 321 } 322 323 static jint getTextAlign(JNIEnv* env, jobject clazz, jlong objHandle) { 324 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 325 return static_cast<jint>(obj->getTextAlign()); 326 } 327 328 static void setTextAlign(JNIEnv* env, jobject clazz, jlong objHandle, jint alignHandle) { 329 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 330 SkPaint::Align align = static_cast<SkPaint::Align>(alignHandle); 331 obj->setTextAlign(align); 332 } 333 334 // generate bcp47 identifier for the supplied locale 335 static void toLanguageTag(char* output, size_t outSize, 336 const char* locale) { 337 if (output == NULL || outSize <= 0) { 338 return; 339 } 340 if (locale == NULL) { 341 output[0] = '\0'; 342 return; 343 } 344 char canonicalChars[ULOC_FULLNAME_CAPACITY]; 345 UErrorCode uErr = U_ZERO_ERROR; 346 uloc_canonicalize(locale, canonicalChars, ULOC_FULLNAME_CAPACITY, 347 &uErr); 348 if (U_SUCCESS(uErr)) { 349 char likelyChars[ULOC_FULLNAME_CAPACITY]; 350 uErr = U_ZERO_ERROR; 351 uloc_addLikelySubtags(canonicalChars, likelyChars, 352 ULOC_FULLNAME_CAPACITY, &uErr); 353 if (U_SUCCESS(uErr)) { 354 uErr = U_ZERO_ERROR; 355 uloc_toLanguageTag(likelyChars, output, outSize, FALSE, &uErr); 356 if (U_SUCCESS(uErr)) { 357 return; 358 } else { 359 ALOGD("uloc_toLanguageTag(\"%s\") failed: %s", likelyChars, 360 u_errorName(uErr)); 361 } 362 } else { 363 ALOGD("uloc_addLikelySubtags(\"%s\") failed: %s", 364 canonicalChars, u_errorName(uErr)); 365 } 366 } else { 367 ALOGD("uloc_canonicalize(\"%s\") failed: %s", locale, 368 u_errorName(uErr)); 369 } 370 // unable to build a proper language identifier 371 output[0] = '\0'; 372 } 373 374 static void setTextLocale(JNIEnv* env, jobject clazz, jlong objHandle, jstring locale) { 375 SkPaint* obj = reinterpret_cast<SkPaint*>(objHandle); 376 ScopedUtfChars localeChars(env, locale); 377 char langTag[ULOC_FULLNAME_CAPACITY]; 378 toLanguageTag(langTag, ULOC_FULLNAME_CAPACITY, localeChars.c_str()); 379 380 SkPaintOptionsAndroid paintOpts = obj->getPaintOptionsAndroid(); 381 paintOpts.setLanguage(langTag); 382 obj->setPaintOptionsAndroid(paintOpts); 383 } 384 385 static jboolean isElegantTextHeight(JNIEnv* env, jobject paint) { 386 NPE_CHECK_RETURN_ZERO(env, paint); 387 SkPaint* obj = GraphicsJNI::getNativePaint(env, paint); 388 SkPaintOptionsAndroid paintOpts = obj->getPaintOptionsAndroid(); 389 return paintOpts.getFontVariant() == SkPaintOptionsAndroid::kElegant_Variant; 390 } 391 392 static void setElegantTextHeight(JNIEnv* env, jobject paint, jboolean aa) { 393 NPE_CHECK_RETURN_VOID(env, paint); 394 SkPaint* obj = GraphicsJNI::getNativePaint(env, paint); 395 SkPaintOptionsAndroid::FontVariant variant = 396 aa ? SkPaintOptionsAndroid::kElegant_Variant : 397 SkPaintOptionsAndroid::kDefault_Variant; 398 SkPaintOptionsAndroid paintOpts = obj->getPaintOptionsAndroid(); 399 paintOpts.setFontVariant(variant); 400 obj->setPaintOptionsAndroid(paintOpts); 401 } 402 403 static jfloat getTextSize(JNIEnv* env, jobject paint) { 404 NPE_CHECK_RETURN_ZERO(env, paint); 405 return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextSize()); 406 } 407 408 static void setTextSize(JNIEnv* env, jobject paint, jfloat textSize) { 409 NPE_CHECK_RETURN_VOID(env, paint); 410 GraphicsJNI::getNativePaint(env, paint)->setTextSize(textSize); 411 } 412 413 static jfloat getTextScaleX(JNIEnv* env, jobject paint) { 414 NPE_CHECK_RETURN_ZERO(env, paint); 415 return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextScaleX()); 416 } 417 418 static void setTextScaleX(JNIEnv* env, jobject paint, jfloat scaleX) { 419 NPE_CHECK_RETURN_VOID(env, paint); 420 GraphicsJNI::getNativePaint(env, paint)->setTextScaleX(scaleX); 421 } 422 423 static jfloat getTextSkewX(JNIEnv* env, jobject paint) { 424 NPE_CHECK_RETURN_ZERO(env, paint); 425 return SkScalarToFloat(GraphicsJNI::getNativePaint(env, paint)->getTextSkewX()); 426 } 427 428 static void setTextSkewX(JNIEnv* env, jobject paint, jfloat skewX) { 429 NPE_CHECK_RETURN_VOID(env, paint); 430 GraphicsJNI::getNativePaint(env, paint)->setTextSkewX(skewX); 431 } 432 433 static SkScalar getMetricsInternal(JNIEnv* env, jobject jpaint, SkPaint::FontMetrics *metrics) { 434 const int kElegantTop = 2500; 435 const int kElegantBottom = -1000; 436 const int kElegantAscent = 1900; 437 const int kElegantDescent = -500; 438 const int kElegantLeading = 0; 439 SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint); 440#ifdef USE_MINIKIN 441 TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint); 442 typeface = TypefaceImpl_resolveDefault(typeface); 443 FakedFont baseFont = typeface->fFontCollection->baseFontFaked(typeface->fStyle); 444 float saveSkewX = paint->getTextSkewX(); 445 bool savefakeBold = paint->isFakeBoldText(); 446 MinikinFontSkia::populateSkPaint(paint, baseFont.font, baseFont.fakery); 447#endif 448 SkScalar spacing = paint->getFontMetrics(metrics); 449#ifdef USE_MINIKIN 450 // The populateSkPaint call may have changed fake bold / text skew 451 // because we want to measure with those effects applied, so now 452 // restore the original settings. 453 paint->setTextSkewX(saveSkewX); 454 paint->setFakeBoldText(savefakeBold); 455#endif 456 SkPaintOptionsAndroid paintOpts = paint->getPaintOptionsAndroid(); 457 if (paintOpts.getFontVariant() == SkPaintOptionsAndroid::kElegant_Variant) { 458 SkScalar size = paint->getTextSize(); 459 metrics->fTop = -size * kElegantTop / 2048; 460 metrics->fBottom = -size * kElegantBottom / 2048; 461 metrics->fAscent = -size * kElegantAscent / 2048; 462 metrics->fDescent = -size * kElegantDescent / 2048; 463 metrics->fLeading = size * kElegantLeading / 2048; 464 spacing = metrics->fDescent - metrics->fAscent + metrics->fLeading; 465 } 466 return spacing; 467 } 468 469 static jfloat ascent(JNIEnv* env, jobject paint) { 470 NPE_CHECK_RETURN_ZERO(env, paint); 471 SkPaint::FontMetrics metrics; 472 getMetricsInternal(env, paint, &metrics); 473 return SkScalarToFloat(metrics.fAscent); 474 } 475 476 static jfloat descent(JNIEnv* env, jobject paint) { 477 NPE_CHECK_RETURN_ZERO(env, paint); 478 SkPaint::FontMetrics metrics; 479 getMetricsInternal(env, paint, &metrics); 480 return SkScalarToFloat(metrics.fDescent); 481 } 482 483 static jfloat getFontMetrics(JNIEnv* env, jobject paint, jobject metricsObj) { 484 NPE_CHECK_RETURN_ZERO(env, paint); 485 SkPaint::FontMetrics metrics; 486 SkScalar spacing = getMetricsInternal(env, paint, &metrics); 487 488 if (metricsObj) { 489 SkASSERT(env->IsInstanceOf(metricsObj, gFontMetrics_class)); 490 env->SetFloatField(metricsObj, gFontMetrics_fieldID.top, SkScalarToFloat(metrics.fTop)); 491 env->SetFloatField(metricsObj, gFontMetrics_fieldID.ascent, SkScalarToFloat(metrics.fAscent)); 492 env->SetFloatField(metricsObj, gFontMetrics_fieldID.descent, SkScalarToFloat(metrics.fDescent)); 493 env->SetFloatField(metricsObj, gFontMetrics_fieldID.bottom, SkScalarToFloat(metrics.fBottom)); 494 env->SetFloatField(metricsObj, gFontMetrics_fieldID.leading, SkScalarToFloat(metrics.fLeading)); 495 } 496 return SkScalarToFloat(spacing); 497 } 498 499 static jint getFontMetricsInt(JNIEnv* env, jobject paint, jobject metricsObj) { 500 NPE_CHECK_RETURN_ZERO(env, paint); 501 SkPaint::FontMetrics metrics; 502 503 getMetricsInternal(env, paint, &metrics); 504 int ascent = SkScalarRoundToInt(metrics.fAscent); 505 int descent = SkScalarRoundToInt(metrics.fDescent); 506 int leading = SkScalarRoundToInt(metrics.fLeading); 507 508 if (metricsObj) { 509 SkASSERT(env->IsInstanceOf(metricsObj, gFontMetricsInt_class)); 510 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.top, SkScalarFloorToInt(metrics.fTop)); 511 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.ascent, ascent); 512 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.descent, descent); 513 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.bottom, SkScalarCeilToInt(metrics.fBottom)); 514 env->SetIntField(metricsObj, gFontMetricsInt_fieldID.leading, leading); 515 } 516 return descent - ascent + leading; 517 } 518 519 static jfloat measureText_CIII(JNIEnv* env, jobject jpaint, jcharArray text, jint index, jint count, 520 jint bidiFlags) { 521 NPE_CHECK_RETURN_ZERO(env, jpaint); 522 NPE_CHECK_RETURN_ZERO(env, text); 523 524 size_t textLength = env->GetArrayLength(text); 525 if ((index | count) < 0 || (size_t)(index + count) > textLength) { 526 doThrowAIOOBE(env); 527 return 0; 528 } 529 if (count == 0) { 530 return 0; 531 } 532 533 SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint); 534 const jchar* textArray = env->GetCharArrayElements(text, NULL); 535 jfloat result = 0; 536 537#ifdef USE_MINIKIN 538 Layout layout; 539 TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint); 540 std::string css = MinikinUtils::setLayoutProperties(&layout, paint, bidiFlags, typeface); 541 layout.doLayout(textArray, index, count, textLength, css); 542 result = layout.getAdvance(); 543#else 544 TextLayout::getTextRunAdvances(paint, textArray, index, count, textLength, 545 bidiFlags, NULL /* dont need all advances */, &result); 546#endif 547 548 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT); 549 return result; 550 } 551 552 static jfloat measureText_StringIII(JNIEnv* env, jobject jpaint, jstring text, jint start, jint end, 553 jint bidiFlags) { 554 NPE_CHECK_RETURN_ZERO(env, jpaint); 555 NPE_CHECK_RETURN_ZERO(env, text); 556 557 size_t textLength = env->GetStringLength(text); 558 int count = end - start; 559 if ((start | count) < 0 || (size_t)end > textLength) { 560 doThrowAIOOBE(env); 561 return 0; 562 } 563 if (count == 0) { 564 return 0; 565 } 566 567 const jchar* textArray = env->GetStringChars(text, NULL); 568 SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint); 569 jfloat width = 0; 570 571#ifdef USE_MINIKIN 572 Layout layout; 573 TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint); 574 std::string css = MinikinUtils::setLayoutProperties(&layout, paint, bidiFlags, typeface); 575 layout.doLayout(textArray, start, count, textLength, css); 576 width = layout.getAdvance(); 577#else 578 TextLayout::getTextRunAdvances(paint, textArray, start, count, textLength, 579 bidiFlags, NULL /* dont need all advances */, &width); 580#endif 581 582 env->ReleaseStringChars(text, textArray); 583 return width; 584 } 585 586 static jfloat measureText_StringI(JNIEnv* env, jobject jpaint, jstring text, jint bidiFlags) { 587 NPE_CHECK_RETURN_ZERO(env, jpaint); 588 NPE_CHECK_RETURN_ZERO(env, text); 589 590 size_t textLength = env->GetStringLength(text); 591 if (textLength == 0) { 592 return 0; 593 } 594 595 const jchar* textArray = env->GetStringChars(text, NULL); 596 SkPaint* paint = GraphicsJNI::getNativePaint(env, jpaint); 597 jfloat width = 0; 598 599#ifdef USE_MINIKIN 600 Layout layout; 601 TypefaceImpl* typeface = GraphicsJNI::getNativeTypeface(env, jpaint); 602 std::string css = MinikinUtils::setLayoutProperties(&layout, paint, bidiFlags, typeface); 603 layout.doLayout(textArray, 0, textLength, textLength, css); 604 width = layout.getAdvance(); 605#else 606 TextLayout::getTextRunAdvances(paint, textArray, 0, textLength, textLength, 607 bidiFlags, NULL /* dont need all advances */, &width); 608#endif 609 610 env->ReleaseStringChars(text, textArray); 611 return width; 612 } 613 614 static int dotextwidths(JNIEnv* env, SkPaint* paint, TypefaceImpl* typeface, const jchar text[], int count, 615 jfloatArray widths, jint bidiFlags) { 616 NPE_CHECK_RETURN_ZERO(env, paint); 617 NPE_CHECK_RETURN_ZERO(env, text); 618 619 if (count < 0 || !widths) { 620 doThrowAIOOBE(env); 621 return 0; 622 } 623 if (count == 0) { 624 return 0; 625 } 626 size_t widthsLength = env->GetArrayLength(widths); 627 if ((size_t)count > widthsLength) { 628 doThrowAIOOBE(env); 629 return 0; 630 } 631 632 AutoJavaFloatArray autoWidths(env, widths, count); 633 jfloat* widthsArray = autoWidths.ptr(); 634 635#ifdef USE_MINIKIN 636 Layout layout; 637 std::string css = MinikinUtils::setLayoutProperties(&layout, paint, bidiFlags, typeface); 638 layout.doLayout(text, 0, count, count, css); 639 layout.getAdvances(widthsArray); 640#else 641 TextLayout::getTextRunAdvances(paint, text, 0, count, count, 642 bidiFlags, widthsArray, NULL /* dont need totalAdvance */); 643#endif 644 645 return count; 646 } 647 648 static jint getTextWidths___CIII_F(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray text, 649 jint index, jint count, jint bidiFlags, jfloatArray widths) { 650 SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle); 651 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 652 const jchar* textArray = env->GetCharArrayElements(text, NULL); 653 count = dotextwidths(env, paint, typeface, textArray + index, count, widths, bidiFlags); 654 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), 655 JNI_ABORT); 656 return count; 657 } 658 659 static jint getTextWidths__StringIII_F(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring text, 660 jint start, jint end, jint bidiFlags, jfloatArray widths) { 661 SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle); 662 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 663 const jchar* textArray = env->GetStringChars(text, NULL); 664 int count = dotextwidths(env, paint, typeface, textArray + start, end - start, widths, bidiFlags); 665 env->ReleaseStringChars(text, textArray); 666 return count; 667 } 668 669 static int doTextGlyphs(JNIEnv* env, SkPaint* paint, const jchar* text, jint start, jint count, 670 jint contextCount, jint flags, jcharArray glyphs) { 671 NPE_CHECK_RETURN_ZERO(env, paint); 672 NPE_CHECK_RETURN_ZERO(env, text); 673 674 if ((start | count | contextCount) < 0 || contextCount < count || !glyphs) { 675 doThrowAIOOBE(env); 676 return 0; 677 } 678 if (count == 0) { 679 return 0; 680 } 681 size_t glypthsLength = env->GetArrayLength(glyphs); 682 if ((size_t)count > glypthsLength) { 683 doThrowAIOOBE(env); 684 return 0; 685 } 686 687 jchar* glyphsArray = env->GetCharArrayElements(glyphs, NULL); 688 689 sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(paint, 690 text, start, count, contextCount, flags); 691 const jchar* shapedGlyphs = value->getGlyphs(); 692 size_t glyphsCount = value->getGlyphsCount(); 693 memcpy(glyphsArray, shapedGlyphs, sizeof(jchar) * glyphsCount); 694 695 env->ReleaseCharArrayElements(glyphs, glyphsArray, JNI_ABORT); 696 return glyphsCount; 697 } 698 699 static jint getTextGlyphs__StringIIIII_C(JNIEnv* env, jobject clazz, jlong paintHandle, 700 jstring text, jint start, jint end, jint contextStart, jint contextEnd, jint flags, 701 jcharArray glyphs) { 702 SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle); 703 const jchar* textArray = env->GetStringChars(text, NULL); 704 int count = doTextGlyphs(env, paint, textArray + contextStart, start - contextStart, 705 end - start, contextEnd - contextStart, flags, glyphs); 706 env->ReleaseStringChars(text, textArray); 707 return count; 708 } 709 710 static jfloat doTextRunAdvances(JNIEnv *env, SkPaint *paint, TypefaceImpl* typeface, const jchar *text, 711 jint start, jint count, jint contextCount, jboolean isRtl, 712 jfloatArray advances, jint advancesIndex) { 713 NPE_CHECK_RETURN_ZERO(env, paint); 714 NPE_CHECK_RETURN_ZERO(env, text); 715 716 if ((start | count | contextCount | advancesIndex) < 0 || contextCount < count) { 717 doThrowAIOOBE(env); 718 return 0; 719 } 720 if (count == 0) { 721 return 0; 722 } 723 if (advances) { 724 size_t advancesLength = env->GetArrayLength(advances); 725 if ((size_t)count > advancesLength) { 726 doThrowAIOOBE(env); 727 return 0; 728 } 729 } 730 jfloat* advancesArray = new jfloat[count]; 731 jfloat totalAdvance = 0; 732 733 int bidiFlags = isRtl ? kBidi_Force_RTL : kBidi_Force_LTR; 734 735#ifdef USE_MINIKIN 736 Layout layout; 737 std::string css = MinikinUtils::setLayoutProperties(&layout, paint, bidiFlags, typeface); 738 layout.doLayout(text, start, count, contextCount, css); 739 layout.getAdvances(advancesArray); 740 totalAdvance = layout.getAdvance(); 741#else 742 TextLayout::getTextRunAdvances(paint, text, start, count, contextCount, bidiFlags, 743 advancesArray, &totalAdvance); 744#endif 745 746 if (advances != NULL) { 747 env->SetFloatArrayRegion(advances, advancesIndex, count, advancesArray); 748 } 749 delete [] advancesArray; 750 return totalAdvance; 751 } 752 753 static jfloat getTextRunAdvances___CIIIIZ_FI(JNIEnv* env, jobject clazz, jlong paintHandle, 754 jlong typefaceHandle, 755 jcharArray text, jint index, jint count, jint contextIndex, jint contextCount, 756 jboolean isRtl, jfloatArray advances, jint advancesIndex) { 757 SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle); 758 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 759 jchar* textArray = env->GetCharArrayElements(text, NULL); 760 jfloat result = doTextRunAdvances(env, paint, typeface, textArray + contextIndex, 761 index - contextIndex, count, contextCount, isRtl, advances, advancesIndex); 762 env->ReleaseCharArrayElements(text, textArray, JNI_ABORT); 763 return result; 764 } 765 766 static jfloat getTextRunAdvances__StringIIIIZ_FI(JNIEnv* env, jobject clazz, jlong paintHandle, 767 jlong typefaceHandle, 768 jstring text, jint start, jint end, jint contextStart, jint contextEnd, jboolean isRtl, 769 jfloatArray advances, jint advancesIndex) { 770 SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle); 771 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 772 const jchar* textArray = env->GetStringChars(text, NULL); 773 jfloat result = doTextRunAdvances(env, paint, typeface, textArray + contextStart, 774 start - contextStart, end - start, contextEnd - contextStart, isRtl, 775 advances, advancesIndex); 776 env->ReleaseStringChars(text, textArray); 777 return result; 778 } 779 780 static jint doTextRunCursor(JNIEnv *env, SkPaint* paint, const jchar *text, jint start, 781 jint count, jint flags, jint offset, jint opt) { 782#ifdef USE_MINIKIN 783 GraphemeBreak::MoveOpt moveOpt = GraphemeBreak::MoveOpt(opt); 784 size_t result = GraphemeBreak::getTextRunCursor(text, start, count, offset, moveOpt); 785 return static_cast<jint>(result); 786#else 787 jfloat scalarArray[count]; 788 789 TextLayout::getTextRunAdvances(paint, text, start, count, start + count, flags, 790 scalarArray, NULL /* dont need totalAdvance */); 791 792 jint pos = offset - start; 793 switch (opt) { 794 case AFTER: 795 if (pos < count) { 796 pos += 1; 797 } 798 // fall through 799 case AT_OR_AFTER: 800 while (pos < count && scalarArray[pos] == 0) { 801 ++pos; 802 } 803 break; 804 case BEFORE: 805 if (pos > 0) { 806 --pos; 807 } 808 // fall through 809 case AT_OR_BEFORE: 810 while (pos > 0 && scalarArray[pos] == 0) { 811 --pos; 812 } 813 break; 814 case AT: 815 default: 816 if (scalarArray[pos] == 0) { 817 pos = -1; 818 } 819 break; 820 } 821 822 if (pos != -1) { 823 pos += start; 824 } 825 826 return pos; 827#endif 828 } 829 830 static jint getTextRunCursor___C(JNIEnv* env, jobject clazz, jlong paintHandle, jcharArray text, 831 jint contextStart, jint contextCount, jint dir, jint offset, jint cursorOpt) { 832 SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle); 833 jchar* textArray = env->GetCharArrayElements(text, NULL); 834 jint result = doTextRunCursor(env, paint, textArray, contextStart, contextCount, dir, 835 offset, cursorOpt); 836 env->ReleaseCharArrayElements(text, textArray, JNI_ABORT); 837 return result; 838 } 839 840 static jint getTextRunCursor__String(JNIEnv* env, jobject clazz, jlong paintHandle, jstring text, 841 jint contextStart, jint contextEnd, jint dir, jint offset, jint cursorOpt) { 842 SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle); 843 const jchar* textArray = env->GetStringChars(text, NULL); 844 jint result = doTextRunCursor(env, paint, textArray, contextStart, 845 contextEnd - contextStart, dir, offset, cursorOpt); 846 env->ReleaseStringChars(text, textArray); 847 return result; 848 } 849 850#ifdef USE_MINIKIN 851 class GetTextFunctor { 852 public: 853 GetTextFunctor(const Layout& layout, SkPath* path, jfloat x, jfloat y, SkPaint* paint, 854 uint16_t* glyphs, SkPoint* pos) 855 : layout(layout), path(path), x(x), y(y), paint(paint), glyphs(glyphs), pos(pos) { 856 } 857 858 void operator()(size_t start, size_t end) { 859 for (size_t i = start; i < end; i++) { 860 glyphs[i] = layout.getGlyphId(i); 861 pos[i].fX = x + layout.getX(i); 862 pos[i].fY = y + layout.getY(i); 863 } 864 if (start == 0) { 865 paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, path); 866 } else { 867 paint->getPosTextPath(glyphs + start, (end - start) << 1, pos + start, &tmpPath); 868 path->addPath(tmpPath); 869 } 870 } 871 private: 872 const Layout& layout; 873 SkPath* path; 874 jfloat x; 875 jfloat y; 876 SkPaint* paint; 877 uint16_t* glyphs; 878 SkPoint* pos; 879 SkPath tmpPath; 880 }; 881#endif 882 883 static void getTextPath(JNIEnv* env, SkPaint* paint, TypefaceImpl* typeface, const jchar* text, 884 jint count, jint bidiFlags, jfloat x, jfloat y, SkPath* path) { 885#ifdef USE_MINIKIN 886 Layout layout; 887 std::string css = MinikinUtils::setLayoutProperties(&layout, paint, bidiFlags, typeface); 888 layout.doLayout(text, 0, count, count, css); 889 size_t nGlyphs = layout.nGlyphs(); 890 uint16_t* glyphs = new uint16_t[nGlyphs]; 891 SkPoint* pos = new SkPoint[nGlyphs]; 892 893 x += MinikinUtils::xOffsetForTextAlign(paint, layout); 894 SkPaint::Align align = paint->getTextAlign(); 895 paint->setTextAlign(SkPaint::kLeft_Align); 896 paint->setTextEncoding(SkPaint::kGlyphID_TextEncoding); 897 GetTextFunctor f(layout, path, x, y, paint, glyphs, pos); 898 MinikinUtils::forFontRun(layout, paint, f); 899 paint->setTextAlign(align); 900 delete[] glyphs; 901 delete[] pos; 902#else 903 TextLayout::getTextPath(paint, text, count, bidiFlags, x, y, path); 904#endif 905 } 906 907 static void getTextPath___C(JNIEnv* env, jobject clazz, jlong paintHandle, 908 jlong typefaceHandle, jint bidiFlags, 909 jcharArray text, jint index, jint count, jfloat x, jfloat y, jlong pathHandle) { 910 SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle); 911 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 912 SkPath* path = reinterpret_cast<SkPath*>(pathHandle); 913 const jchar* textArray = env->GetCharArrayElements(text, NULL); 914 getTextPath(env, paint, typeface, textArray + index, count, bidiFlags, x, y, path); 915 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), JNI_ABORT); 916 } 917 918 static void getTextPath__String(JNIEnv* env, jobject clazz, jlong paintHandle, 919 jlong typefaceHandle, jint bidiFlags, 920 jstring text, jint start, jint end, jfloat x, jfloat y, jlong pathHandle) { 921 SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle); 922 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 923 SkPath* path = reinterpret_cast<SkPath*>(pathHandle); 924 const jchar* textArray = env->GetStringChars(text, NULL); 925 getTextPath(env, paint, typeface, textArray + start, end - start, bidiFlags, x, y, path); 926 env->ReleaseStringChars(text, textArray); 927 } 928 929 static void setShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle, jfloat radius, 930 jfloat dx, jfloat dy, jint color) { 931 SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle); 932 if (radius <= 0) { 933 paint->setLooper(NULL); 934 } 935 else { 936 SkScalar sigma = android::uirenderer::Blur::convertRadiusToSigma(radius); 937 paint->setLooper(SkBlurDrawLooper::Create((SkColor)color, sigma, dx, dy))->unref(); 938 } 939 } 940 941 static jboolean hasShadowLayer(JNIEnv* env, jobject clazz, jlong paintHandle) { 942 SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle); 943 return paint->getLooper() && paint->getLooper()->asABlurShadow(NULL); 944 } 945 946 static int breakText(JNIEnv* env, const SkPaint& paint, TypefaceImpl* typeface, const jchar text[], 947 int count, float maxWidth, jint bidiFlags, jfloatArray jmeasured, 948 SkPaint::TextBufferDirection textBufferDirection) { 949 size_t measuredCount = 0; 950 float measured = 0; 951 952#ifdef USE_MINIKIN 953 Layout layout; 954 std::string css = MinikinUtils::setLayoutProperties(&layout, &paint, bidiFlags, typeface); 955 layout.doLayout(text, 0, count, count, css); 956 float* advances = new float[count]; 957 layout.getAdvances(advances); 958 const bool forwardScan = (textBufferDirection == SkPaint::kForward_TextBufferDirection); 959 for (int i = 0; i < count; i++) { 960 // traverse in the given direction 961 int index = forwardScan ? i : (count - i - 1); 962 float width = advances[index]; 963 if (measured + width > maxWidth) { 964 break; 965 } 966 // properly handle clusters when scanning backwards 967 if (forwardScan || width != 0.0f) { 968 measuredCount = i + 1; 969 } 970 measured += width; 971 } 972 delete[] advances; 973#else 974 sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(&paint, 975 text, 0, count, count, bidiFlags); 976 if (value == NULL) { 977 return 0; 978 } 979 SkScalar m; 980 size_t bytes = paint.breakText(value->getGlyphs(), value->getGlyphsCount() << 1, 981 maxWidth, &m, textBufferDirection); 982 SkASSERT((bytes & 1) == 0); 983 measuredCount = bytes >> 1; 984 measured = SkScalarToFloat(m); 985#endif 986 987 if (jmeasured && env->GetArrayLength(jmeasured) > 0) { 988 AutoJavaFloatArray autoMeasured(env, jmeasured, 1); 989 jfloat* array = autoMeasured.ptr(); 990 array[0] = measured; 991 } 992 return measuredCount; 993 } 994 995 static jint breakTextC(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jcharArray jtext, 996 jint index, jint count, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) { 997 NPE_CHECK_RETURN_ZERO(env, jtext); 998 999 SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle); 1000 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 1001 1002 SkPaint::TextBufferDirection tbd; 1003 if (count < 0) { 1004 tbd = SkPaint::kBackward_TextBufferDirection; 1005 count = -count; 1006 } 1007 else { 1008 tbd = SkPaint::kForward_TextBufferDirection; 1009 } 1010 1011 if ((index < 0) || (index + count > env->GetArrayLength(jtext))) { 1012 doThrowAIOOBE(env); 1013 return 0; 1014 } 1015 1016 const jchar* text = env->GetCharArrayElements(jtext, NULL); 1017 count = breakText(env, *paint, typeface, text + index, count, maxWidth, 1018 bidiFlags, jmeasuredWidth, tbd); 1019 env->ReleaseCharArrayElements(jtext, const_cast<jchar*>(text), 1020 JNI_ABORT); 1021 return count; 1022 } 1023 1024 static jint breakTextS(JNIEnv* env, jobject clazz, jlong paintHandle, jlong typefaceHandle, jstring jtext, 1025 jboolean forwards, jfloat maxWidth, jint bidiFlags, jfloatArray jmeasuredWidth) { 1026 NPE_CHECK_RETURN_ZERO(env, jtext); 1027 1028 SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle); 1029 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 1030 1031 SkPaint::TextBufferDirection tbd = forwards ? 1032 SkPaint::kForward_TextBufferDirection : 1033 SkPaint::kBackward_TextBufferDirection; 1034 1035 int count = env->GetStringLength(jtext); 1036 const jchar* text = env->GetStringChars(jtext, NULL); 1037 count = breakText(env, *paint, typeface, text, count, maxWidth, bidiFlags, jmeasuredWidth, tbd); 1038 env->ReleaseStringChars(jtext, text); 1039 return count; 1040 } 1041 1042 static void doTextBounds(JNIEnv* env, const jchar* text, int count, jobject bounds, 1043 const SkPaint& paint, TypefaceImpl* typeface, jint bidiFlags) { 1044 SkRect r; 1045 SkIRect ir; 1046 1047#ifdef USE_MINIKIN 1048 Layout layout; 1049 std::string css = MinikinUtils::setLayoutProperties(&layout, &paint, bidiFlags, typeface); 1050 layout.doLayout(text, 0, count, count, css); 1051 MinikinRect rect; 1052 layout.getBounds(&rect); 1053 r.fLeft = rect.mLeft; 1054 r.fTop = rect.mTop; 1055 r.fRight = rect.mRight; 1056 r.fBottom = rect.mBottom; 1057#else 1058 sp<TextLayoutValue> value = TextLayoutEngine::getInstance().getValue(&paint, 1059 text, 0, count, count, bidiFlags); 1060 if (value == NULL) { 1061 return; 1062 } 1063 paint.measureText(value->getGlyphs(), value->getGlyphsCount() << 1, &r); 1064#endif 1065 r.roundOut(&ir); 1066 GraphicsJNI::irect_to_jrect(ir, env, bounds); 1067 } 1068 1069 static void getStringBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle, 1070 jstring text, jint start, jint end, jint bidiFlags, jobject bounds) { 1071 const SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle);; 1072 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 1073 const jchar* textArray = env->GetStringChars(text, NULL); 1074 doTextBounds(env, textArray + start, end - start, bounds, *paint, typeface, bidiFlags); 1075 env->ReleaseStringChars(text, textArray); 1076 } 1077 1078 static void getCharArrayBounds(JNIEnv* env, jobject, jlong paintHandle, jlong typefaceHandle, 1079 jcharArray text, jint index, jint count, jint bidiFlags, jobject bounds) { 1080 const SkPaint* paint = reinterpret_cast<SkPaint*>(paintHandle); 1081 TypefaceImpl* typeface = reinterpret_cast<TypefaceImpl*>(typefaceHandle); 1082 const jchar* textArray = env->GetCharArrayElements(text, NULL); 1083 doTextBounds(env, textArray + index, count, bounds, *paint, typeface, bidiFlags); 1084 env->ReleaseCharArrayElements(text, const_cast<jchar*>(textArray), 1085 JNI_ABORT); 1086 } 1087 1088}; 1089 1090static JNINativeMethod methods[] = { 1091 {"finalizer", "(J)V", (void*) SkPaintGlue::finalizer}, 1092 {"native_init","()J", (void*) SkPaintGlue::init}, 1093 {"native_initWithPaint","(J)J", (void*) SkPaintGlue::initWithPaint}, 1094 {"native_reset","(J)V", (void*) SkPaintGlue::reset}, 1095 {"native_set","(JJ)V", (void*) SkPaintGlue::assign}, 1096 {"getFlags","()I", (void*) SkPaintGlue::getFlags}, 1097 {"setFlags","(I)V", (void*) SkPaintGlue::setFlags}, 1098 {"getHinting","()I", (void*) SkPaintGlue::getHinting}, 1099 {"setHinting","(I)V", (void*) SkPaintGlue::setHinting}, 1100 {"setAntiAlias","(Z)V", (void*) SkPaintGlue::setAntiAlias}, 1101 {"setSubpixelText","(Z)V", (void*) SkPaintGlue::setSubpixelText}, 1102 {"setLinearText","(Z)V", (void*) SkPaintGlue::setLinearText}, 1103 {"setUnderlineText","(Z)V", (void*) SkPaintGlue::setUnderlineText}, 1104 {"setStrikeThruText","(Z)V", (void*) SkPaintGlue::setStrikeThruText}, 1105 {"setFakeBoldText","(Z)V", (void*) SkPaintGlue::setFakeBoldText}, 1106 {"setFilterBitmap","(Z)V", (void*) SkPaintGlue::setFilterBitmap}, 1107 {"setDither","(Z)V", (void*) SkPaintGlue::setDither}, 1108 {"native_getStyle","(J)I", (void*) SkPaintGlue::getStyle}, 1109 {"native_setStyle","(JI)V", (void*) SkPaintGlue::setStyle}, 1110 {"getColor","()I", (void*) SkPaintGlue::getColor}, 1111 {"setColor","(I)V", (void*) SkPaintGlue::setColor}, 1112 {"getAlpha","()I", (void*) SkPaintGlue::getAlpha}, 1113 {"setAlpha","(I)V", (void*) SkPaintGlue::setAlpha}, 1114 {"getStrokeWidth","()F", (void*) SkPaintGlue::getStrokeWidth}, 1115 {"setStrokeWidth","(F)V", (void*) SkPaintGlue::setStrokeWidth}, 1116 {"getStrokeMiter","()F", (void*) SkPaintGlue::getStrokeMiter}, 1117 {"setStrokeMiter","(F)V", (void*) SkPaintGlue::setStrokeMiter}, 1118 {"native_getStrokeCap","(J)I", (void*) SkPaintGlue::getStrokeCap}, 1119 {"native_setStrokeCap","(JI)V", (void*) SkPaintGlue::setStrokeCap}, 1120 {"native_getStrokeJoin","(J)I", (void*) SkPaintGlue::getStrokeJoin}, 1121 {"native_setStrokeJoin","(JI)V", (void*) SkPaintGlue::setStrokeJoin}, 1122 {"native_getFillPath","(JJJ)Z", (void*) SkPaintGlue::getFillPath}, 1123 {"native_setShader","(JJ)J", (void*) SkPaintGlue::setShader}, 1124 {"native_setColorFilter","(JJ)J", (void*) SkPaintGlue::setColorFilter}, 1125 {"native_setXfermode","(JJ)J", (void*) SkPaintGlue::setXfermode}, 1126 {"native_setPathEffect","(JJ)J", (void*) SkPaintGlue::setPathEffect}, 1127 {"native_setMaskFilter","(JJ)J", (void*) SkPaintGlue::setMaskFilter}, 1128 {"native_setTypeface","(JJ)J", (void*) SkPaintGlue::setTypeface}, 1129 {"native_setRasterizer","(JJ)J", (void*) SkPaintGlue::setRasterizer}, 1130 {"native_getTextAlign","(J)I", (void*) SkPaintGlue::getTextAlign}, 1131 {"native_setTextAlign","(JI)V", (void*) SkPaintGlue::setTextAlign}, 1132 {"native_setTextLocale","(JLjava/lang/String;)V", (void*) SkPaintGlue::setTextLocale}, 1133 {"isElegantTextHeight","()Z", (void*) SkPaintGlue::isElegantTextHeight}, 1134 {"setElegantTextHeight","(Z)V", (void*) SkPaintGlue::setElegantTextHeight}, 1135 {"getTextSize","()F", (void*) SkPaintGlue::getTextSize}, 1136 {"setTextSize","(F)V", (void*) SkPaintGlue::setTextSize}, 1137 {"getTextScaleX","()F", (void*) SkPaintGlue::getTextScaleX}, 1138 {"setTextScaleX","(F)V", (void*) SkPaintGlue::setTextScaleX}, 1139 {"getTextSkewX","()F", (void*) SkPaintGlue::getTextSkewX}, 1140 {"setTextSkewX","(F)V", (void*) SkPaintGlue::setTextSkewX}, 1141 {"ascent","()F", (void*) SkPaintGlue::ascent}, 1142 {"descent","()F", (void*) SkPaintGlue::descent}, 1143 {"getFontMetrics", "(Landroid/graphics/Paint$FontMetrics;)F", (void*)SkPaintGlue::getFontMetrics}, 1144 {"getFontMetricsInt", "(Landroid/graphics/Paint$FontMetricsInt;)I", (void*)SkPaintGlue::getFontMetricsInt}, 1145 {"native_measureText","([CIII)F", (void*) SkPaintGlue::measureText_CIII}, 1146 {"native_measureText","(Ljava/lang/String;I)F", (void*) SkPaintGlue::measureText_StringI}, 1147 {"native_measureText","(Ljava/lang/String;III)F", (void*) SkPaintGlue::measureText_StringIII}, 1148 {"native_breakText","(JJ[CIIFI[F)I", (void*) SkPaintGlue::breakTextC}, 1149 {"native_breakText","(JJLjava/lang/String;ZFI[F)I", (void*) SkPaintGlue::breakTextS}, 1150 {"native_getTextWidths","(JJ[CIII[F)I", (void*) SkPaintGlue::getTextWidths___CIII_F}, 1151 {"native_getTextWidths","(JJLjava/lang/String;III[F)I", (void*) SkPaintGlue::getTextWidths__StringIII_F}, 1152 {"native_getTextRunAdvances","(JJ[CIIIIZ[FI)F", 1153 (void*) SkPaintGlue::getTextRunAdvances___CIIIIZ_FI}, 1154 {"native_getTextRunAdvances","(JJLjava/lang/String;IIIIZ[FI)F", 1155 (void*) SkPaintGlue::getTextRunAdvances__StringIIIIZ_FI}, 1156 1157 1158 {"native_getTextGlyphs","(JLjava/lang/String;IIIII[C)I", 1159 (void*) SkPaintGlue::getTextGlyphs__StringIIIII_C}, 1160 {"native_getTextRunCursor", "(J[CIIIII)I", (void*) SkPaintGlue::getTextRunCursor___C}, 1161 {"native_getTextRunCursor", "(JLjava/lang/String;IIIII)I", 1162 (void*) SkPaintGlue::getTextRunCursor__String}, 1163 {"native_getTextPath","(JJI[CIIFFJ)V", (void*) SkPaintGlue::getTextPath___C}, 1164 {"native_getTextPath","(JJILjava/lang/String;IIFFJ)V", (void*) SkPaintGlue::getTextPath__String}, 1165 {"nativeGetStringBounds", "(JJLjava/lang/String;IIILandroid/graphics/Rect;)V", 1166 (void*) SkPaintGlue::getStringBounds }, 1167 {"nativeGetCharArrayBounds", "(JJ[CIIILandroid/graphics/Rect;)V", 1168 (void*) SkPaintGlue::getCharArrayBounds }, 1169 {"native_setShadowLayer", "(JFFFI)V", (void*)SkPaintGlue::setShadowLayer}, 1170 {"native_hasShadowLayer", "(J)Z", (void*)SkPaintGlue::hasShadowLayer} 1171}; 1172 1173static jfieldID req_fieldID(jfieldID id) { 1174 SkASSERT(id); 1175 return id; 1176} 1177 1178int register_android_graphics_Paint(JNIEnv* env) { 1179 gFontMetrics_class = env->FindClass("android/graphics/Paint$FontMetrics"); 1180 SkASSERT(gFontMetrics_class); 1181 gFontMetrics_class = (jclass)env->NewGlobalRef(gFontMetrics_class); 1182 1183 gFontMetrics_fieldID.top = req_fieldID(env->GetFieldID(gFontMetrics_class, "top", "F")); 1184 gFontMetrics_fieldID.ascent = req_fieldID(env->GetFieldID(gFontMetrics_class, "ascent", "F")); 1185 gFontMetrics_fieldID.descent = req_fieldID(env->GetFieldID(gFontMetrics_class, "descent", "F")); 1186 gFontMetrics_fieldID.bottom = req_fieldID(env->GetFieldID(gFontMetrics_class, "bottom", "F")); 1187 gFontMetrics_fieldID.leading = req_fieldID(env->GetFieldID(gFontMetrics_class, "leading", "F")); 1188 1189 gFontMetricsInt_class = env->FindClass("android/graphics/Paint$FontMetricsInt"); 1190 SkASSERT(gFontMetricsInt_class); 1191 gFontMetricsInt_class = (jclass)env->NewGlobalRef(gFontMetricsInt_class); 1192 1193 gFontMetricsInt_fieldID.top = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "top", "I")); 1194 gFontMetricsInt_fieldID.ascent = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "ascent", "I")); 1195 gFontMetricsInt_fieldID.descent = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "descent", "I")); 1196 gFontMetricsInt_fieldID.bottom = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "bottom", "I")); 1197 gFontMetricsInt_fieldID.leading = req_fieldID(env->GetFieldID(gFontMetricsInt_class, "leading", "I")); 1198 1199 int result = AndroidRuntime::registerNativeMethods(env, "android/graphics/Paint", methods, 1200 sizeof(methods) / sizeof(methods[0])); 1201 return result; 1202} 1203 1204} 1205