android_view_GLES20Canvas.cpp revision 4aa90573bbf86db0d33a3a790c5dbd0d93b95cfe
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define LOG_TAG "OpenGLRenderer" 18 19#include "jni.h" 20#include <nativehelper/JNIHelp.h> 21#include <android_runtime/AndroidRuntime.h> 22#include <utils/ResourceTypes.h> 23 24#include <SkBitmap.h> 25#include <SkCanvas.h> 26#include <SkMatrix.h> 27#include <SkPaint.h> 28#include <SkRegion.h> 29#include <SkScalerContext.h> 30#include <SkTemplates.h> 31#include <SkXfermode.h> 32 33#include <OpenGLDebugRenderer.h> 34#include <OpenGLRenderer.h> 35#include <SkiaShader.h> 36#include <SkiaColorFilter.h> 37#include <Rect.h> 38 39#include "TextLayout.h" 40 41namespace android { 42 43using namespace uirenderer; 44 45/** 46 * Note: OpenGLRenderer JNI layer is generated and compiled only on supported 47 * devices. This means all the logic must be compiled only when the 48 * preprocessor variable USE_OPENGL_RENDERER is defined. 49 */ 50#ifdef USE_OPENGL_RENDERER 51 52#define DEBUG_RENDERER 0 53 54// ---------------------------------------------------------------------------- 55// Java APIs 56// ---------------------------------------------------------------------------- 57 58static struct { 59 jclass clazz; 60 jmethodID set; 61} gRectClassInfo; 62 63// ---------------------------------------------------------------------------- 64// Constructors 65// ---------------------------------------------------------------------------- 66 67static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject canvas) { 68#if DEBUG_RENDERER 69 return new OpenGLDebugRenderer; 70#else 71 return new OpenGLRenderer; 72#endif 73} 74 75static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject canvas, 76 OpenGLRenderer* renderer) { 77 delete renderer; 78} 79 80// ---------------------------------------------------------------------------- 81// Setup 82// ---------------------------------------------------------------------------- 83 84static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject canvas, 85 OpenGLRenderer* renderer, jint width, jint height) { 86 renderer->setViewport(width, height); 87} 88 89static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject canvas, 90 OpenGLRenderer* renderer) { 91 renderer->prepare(); 92} 93 94static void android_view_GLES20Canvas_finish(JNIEnv* env, jobject canvas, 95 OpenGLRenderer* renderer) { 96 renderer->finish(); 97} 98 99static void android_view_GLES20Canvas_acquireContext(JNIEnv* env, jobject canvas, 100 OpenGLRenderer* renderer) { 101 renderer->acquireContext(); 102} 103 104static void android_view_GLES20Canvas_releaseContext(JNIEnv* env, jobject canvas, 105 OpenGLRenderer* renderer) { 106 renderer->releaseContext(); 107} 108 109// ---------------------------------------------------------------------------- 110// State 111// ---------------------------------------------------------------------------- 112 113static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject canvas, OpenGLRenderer* renderer, 114 jint flags) { 115 return renderer->save(flags); 116} 117 118static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject canvas, 119 OpenGLRenderer* renderer) { 120 return renderer->getSaveCount(); 121} 122 123static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject canvas, 124 OpenGLRenderer* renderer) { 125 renderer->restore(); 126} 127 128static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject canvas, 129 OpenGLRenderer* renderer, jint saveCount) { 130 renderer->restoreToCount(saveCount); 131} 132 133// ---------------------------------------------------------------------------- 134// Layers 135// ---------------------------------------------------------------------------- 136 137static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject canvas, 138 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 139 SkPaint* paint, jint saveFlags) { 140 return renderer->saveLayer(left, top, right, bottom, paint, saveFlags); 141} 142 143static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject canvas, 144 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 145 jint alpha, jint saveFlags) { 146 return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags); 147} 148 149// ---------------------------------------------------------------------------- 150// Clipping 151// ---------------------------------------------------------------------------- 152 153static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject canvas, 154 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 155 SkCanvas::EdgeType edge) { 156 return renderer->quickReject(left, top, right, bottom); 157} 158 159static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject canvas, 160 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 161 SkRegion::Op op) { 162 return renderer->clipRect(left, top, right, bottom, op); 163} 164 165static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject canvas, 166 OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom, 167 SkRegion::Op op) { 168 return renderer->clipRect(float(left), float(top), float(right), float(bottom), op); 169} 170 171static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject canvas, 172 OpenGLRenderer* renderer, jobject rect) { 173 const android::uirenderer::Rect& bounds(renderer->getClipBounds()); 174 175 env->CallVoidMethod(rect, gRectClassInfo.set, 176 int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom)); 177 178 return !bounds.isEmpty(); 179} 180 181// ---------------------------------------------------------------------------- 182// Transforms 183// ---------------------------------------------------------------------------- 184 185static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject canvas, 186 OpenGLRenderer* renderer, jfloat dx, jfloat dy) { 187 renderer->translate(dx, dy); 188} 189 190static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject canvas, 191 OpenGLRenderer* renderer, jfloat degrees) { 192 renderer->rotate(degrees); 193} 194 195static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject canvas, 196 OpenGLRenderer* renderer, jfloat sx, jfloat sy) { 197 renderer->scale(sx, sy); 198} 199 200static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject canvas, 201 OpenGLRenderer* renderer, SkMatrix* matrix) { 202 renderer->setMatrix(matrix); 203} 204 205static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject canvas, 206 OpenGLRenderer* renderer, SkMatrix* matrix) { 207 renderer->getMatrix(matrix); 208} 209 210static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject canvas, 211 OpenGLRenderer* renderer, SkMatrix* matrix) { 212 renderer->concatMatrix(matrix); 213} 214 215// ---------------------------------------------------------------------------- 216// Drawing 217// ---------------------------------------------------------------------------- 218 219static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject canvas, 220 OpenGLRenderer* renderer, SkBitmap* bitmap, float left, float top, SkPaint* paint) { 221 renderer->drawBitmap(bitmap, left, top, paint); 222} 223 224static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject canvas, 225 OpenGLRenderer* renderer, SkBitmap* bitmap, 226 float srcLeft, float srcTop, float srcRight, float srcBottom, 227 float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) { 228 renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom, 229 dstLeft, dstTop, dstRight, dstBottom, paint); 230} 231 232static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject canvas, 233 OpenGLRenderer* renderer, SkBitmap* bitmap, SkMatrix* matrix, SkPaint* paint) { 234 renderer->drawBitmap(bitmap, matrix, paint); 235} 236 237static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject canvas, 238 OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray chunks, 239 float left, float top, float right, float bottom, SkPaint* paint) { 240 jbyte* storage = env->GetByteArrayElements(chunks, NULL); 241 Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage); 242 Res_png_9patch::deserialize(patch); 243 244 renderer->drawPatch(bitmap, &patch->xDivs[0], &patch->yDivs[0], 245 patch->numXDivs, patch->numYDivs, left, top, right, bottom, paint); 246 247 env->ReleaseByteArrayElements(chunks, storage, 0); 248} 249 250static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject canvas, 251 OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) { 252 renderer->drawColor(color, mode); 253} 254 255static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject canvas, 256 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 257 SkPaint* paint) { 258 renderer->drawRect(left, top, right, bottom, paint); 259} 260 261static void android_view_GLES20Canvas_drawRects(JNIEnv* env, jobject canvas, 262 OpenGLRenderer* renderer, SkRegion* region, SkPaint* paint) { 263 SkRegion::Iterator it(*region); 264 while (!it.done()) { 265 const SkIRect& r = it.rect(); 266 renderer->drawRect(r.fLeft, r.fTop, r.fRight, r.fBottom, paint); 267 it.next(); 268 } 269} 270 271static void android_view_GLES20Canvas_drawPath(JNIEnv* env, jobject canvas, 272 OpenGLRenderer* renderer, SkPath* path, SkPaint* paint) { 273 renderer->drawPath(path, paint); 274} 275 276static void android_view_GLES20Canvas_drawLines(JNIEnv* env, jobject canvas, 277 OpenGLRenderer* renderer, jfloatArray points, jint offset, jint count, SkPaint* paint) { 278 jfloat* storage = env->GetFloatArrayElements(points, NULL); 279 280 renderer->drawLines(storage + offset, count, paint); 281 282 env->ReleaseFloatArrayElements(points, storage, 0); 283} 284 285// ---------------------------------------------------------------------------- 286// Shaders and color filters 287// ---------------------------------------------------------------------------- 288 289static void android_view_GLES20Canvas_resetModifiers(JNIEnv* env, jobject canvas, 290 OpenGLRenderer* renderer) { 291 renderer->resetShader(); 292 renderer->resetColorFilter(); 293 renderer->resetShadow(); 294} 295 296static void android_view_GLES20Canvas_setupShader(JNIEnv* env, jobject canvas, 297 OpenGLRenderer* renderer, SkiaShader* shader) { 298 renderer->setupShader(shader); 299} 300 301static void android_view_GLES20Canvas_setupColorFilter(JNIEnv* env, jobject canvas, 302 OpenGLRenderer* renderer, SkiaColorFilter* filter) { 303 renderer->setupColorFilter(filter); 304} 305 306static void android_view_GLES20Canvas_setupShadow(JNIEnv* env, jobject canvas, 307 OpenGLRenderer* renderer, jfloat radius, jfloat dx, jfloat dy, jint color) { 308 renderer->setupShadow(radius, dx, dy, color); 309} 310 311// ---------------------------------------------------------------------------- 312// Text 313// ---------------------------------------------------------------------------- 314 315static void renderText(OpenGLRenderer* renderer, const jchar* text, int count, 316 jfloat x, jfloat y, int flags, SkPaint* paint) { 317 const jchar *workText; 318 jchar* buffer = NULL; 319 int32_t workBytes; 320 if (TextLayout::prepareText(paint, text, count, flags, &workText, &workBytes, &buffer)) { 321 renderer->drawText((const char*) workText, workBytes, count, x, y, paint); 322 free(buffer); 323 } 324} 325 326static void renderTextRun(OpenGLRenderer* renderer, const jchar* text, 327 jint start, jint count, jint contextCount, jfloat x, jfloat y, 328 int flags, SkPaint* paint) { 329 uint8_t rtl = flags & 0x1; 330 if (rtl) { 331 SkAutoSTMalloc<80, jchar> buffer(contextCount); 332 jchar* shaped = buffer.get(); 333 if (TextLayout::prepareRtlTextRun(text, start, count, contextCount, shaped)) { 334 renderer->drawText((const char*) shaped, count << 1, count, x, y, paint); 335 } else { 336 LOGW("drawTextRun error"); 337 } 338 } else { 339 renderer->drawText((const char*) (text + start), count << 1, count, x, y, paint); 340 } 341} 342 343static void android_view_GLES20Canvas_drawTextArray(JNIEnv* env, jobject canvas, 344 OpenGLRenderer* renderer, jcharArray text, int index, int count, 345 jfloat x, jfloat y, int flags, SkPaint* paint) { 346 jchar* textArray = env->GetCharArrayElements(text, NULL); 347 renderText(renderer, textArray + index, count, x, y, flags, paint); 348 env->ReleaseCharArrayElements(text, textArray, JNI_ABORT); 349} 350 351static void android_view_GLES20Canvas_drawText(JNIEnv* env, jobject canvas, 352 OpenGLRenderer* renderer, jstring text, int start, int end, 353 jfloat x, jfloat y, int flags, SkPaint* paint) { 354 const jchar* textArray = env->GetStringChars(text, NULL); 355 renderText(renderer, textArray + start, end - start, x, y, flags, paint); 356 env->ReleaseStringChars(text, textArray); 357} 358 359static void android_view_GLES20Canvas_drawTextRunArray(JNIEnv* env, jobject canvas, 360 OpenGLRenderer* renderer, jcharArray text, int index, int count, 361 int contextIndex, int contextCount, jfloat x, jfloat y, int dirFlags, 362 SkPaint* paint) { 363 jchar* textArray = env->GetCharArrayElements(text, NULL); 364 renderTextRun(renderer, textArray + contextIndex, index - contextIndex, 365 count, contextCount, x, y, dirFlags, paint); 366 env->ReleaseCharArrayElements(text, textArray, JNI_ABORT); 367 } 368 369static void android_view_GLES20Canvas_drawTextRun(JNIEnv* env, jobject canvas, 370 OpenGLRenderer* renderer, jstring text, int start, int end, 371 int contextStart, int contextEnd, jfloat x, jfloat y, int dirFlags, 372 SkPaint* paint) { 373 const jchar* textArray = env->GetStringChars(text, NULL); 374 jint count = end - start; 375 jint contextCount = contextEnd - contextStart; 376 renderTextRun(renderer, textArray + contextStart, start - contextStart, 377 count, contextCount, x, y, dirFlags, paint); 378 env->ReleaseStringChars(text, textArray); 379} 380 381#endif // USE_OPENGL_RENDERER 382 383// ---------------------------------------------------------------------------- 384// Common 385// ---------------------------------------------------------------------------- 386 387static jboolean android_view_GLES20Canvas_isAvailable(JNIEnv* env, jobject clazz) { 388#ifdef USE_OPENGL_RENDERER 389 return JNI_TRUE; 390#else 391 return JNI_FALSE; 392#endif 393} 394 395// ---------------------------------------------------------------------------- 396// JNI Glue 397// ---------------------------------------------------------------------------- 398 399const char* const kClassPathName = "android/view/GLES20Canvas"; 400 401static JNINativeMethod gMethods[] = { 402 { "nIsAvailable", "()Z", (void*) android_view_GLES20Canvas_isAvailable }, 403 404#ifdef USE_OPENGL_RENDERER 405 { "nCreateRenderer", "()I", (void*) android_view_GLES20Canvas_createRenderer }, 406 { "nDestroyRenderer", "(I)V", (void*) android_view_GLES20Canvas_destroyRenderer }, 407 { "nSetViewport", "(III)V", (void*) android_view_GLES20Canvas_setViewport }, 408 { "nPrepare", "(I)V", (void*) android_view_GLES20Canvas_prepare }, 409 { "nFinish", "(I)V", (void*) android_view_GLES20Canvas_finish }, 410 { "nAcquireContext", "(I)V", (void*) android_view_GLES20Canvas_acquireContext }, 411 { "nReleaseContext", "(I)V", (void*) android_view_GLES20Canvas_releaseContext }, 412 413 { "nSave", "(II)I", (void*) android_view_GLES20Canvas_save }, 414 { "nRestore", "(I)V", (void*) android_view_GLES20Canvas_restore }, 415 { "nRestoreToCount", "(II)V", (void*) android_view_GLES20Canvas_restoreToCount }, 416 { "nGetSaveCount", "(I)I", (void*) android_view_GLES20Canvas_getSaveCount }, 417 418 { "nSaveLayer", "(IFFFFII)I", (void*) android_view_GLES20Canvas_saveLayer }, 419 { "nSaveLayerAlpha", "(IFFFFII)I", (void*) android_view_GLES20Canvas_saveLayerAlpha }, 420 421 { "nQuickReject", "(IFFFFI)Z", (void*) android_view_GLES20Canvas_quickReject }, 422 { "nClipRect", "(IFFFFI)Z", (void*) android_view_GLES20Canvas_clipRectF }, 423 { "nClipRect", "(IIIIII)Z", (void*) android_view_GLES20Canvas_clipRect }, 424 425 { "nTranslate", "(IFF)V", (void*) android_view_GLES20Canvas_translate }, 426 { "nRotate", "(IF)V", (void*) android_view_GLES20Canvas_rotate }, 427 { "nScale", "(IFF)V", (void*) android_view_GLES20Canvas_scale }, 428 429 { "nSetMatrix", "(II)V", (void*) android_view_GLES20Canvas_setMatrix }, 430 { "nGetMatrix", "(II)V", (void*) android_view_GLES20Canvas_getMatrix }, 431 { "nConcatMatrix", "(II)V", (void*) android_view_GLES20Canvas_concatMatrix }, 432 433 { "nDrawBitmap", "(IIFFI)V", (void*) android_view_GLES20Canvas_drawBitmap }, 434 { "nDrawBitmap", "(IIFFFFFFFFI)V", (void*) android_view_GLES20Canvas_drawBitmapRect }, 435 { "nDrawBitmap", "(IIII)V", (void*) android_view_GLES20Canvas_drawBitmapMatrix }, 436 { "nDrawPatch", "(II[BFFFFI)V", (void*) android_view_GLES20Canvas_drawPatch }, 437 { "nDrawColor", "(III)V", (void*) android_view_GLES20Canvas_drawColor }, 438 { "nDrawRect", "(IFFFFI)V", (void*) android_view_GLES20Canvas_drawRect }, 439 { "nDrawRects", "(III)V", (void*) android_view_GLES20Canvas_drawRects }, 440 { "nDrawPath", "(III)V", (void*) android_view_GLES20Canvas_drawPath }, 441 { "nDrawLines", "(I[FIII)V", (void*) android_view_GLES20Canvas_drawLines }, 442 443 { "nResetModifiers", "(I)V", (void*) android_view_GLES20Canvas_resetModifiers }, 444 { "nSetupShader", "(II)V", (void*) android_view_GLES20Canvas_setupShader }, 445 { "nSetupColorFilter", "(II)V", (void*) android_view_GLES20Canvas_setupColorFilter }, 446 { "nSetupShadow", "(IFFFI)V", (void*) android_view_GLES20Canvas_setupShadow }, 447 448 { "nDrawText", "(I[CIIFFII)V", (void*) android_view_GLES20Canvas_drawTextArray }, 449 { "nDrawText", "(ILjava/lang/String;IIFFII)V", 450 (void*) android_view_GLES20Canvas_drawText }, 451 452 { "nDrawTextRun", "(I[CIIIIFFII)V", (void*) android_view_GLES20Canvas_drawTextRunArray }, 453 { "nDrawTextRun", "(ILjava/lang/String;IIIIFFII)V", 454 (void*) android_view_GLES20Canvas_drawTextRun }, 455 456 { "nGetClipBounds", "(ILandroid/graphics/Rect;)Z", 457 (void*) android_view_GLES20Canvas_getClipBounds }, 458#endif 459}; 460 461#ifdef USE_OPENGL_RENDERER 462 #define FIND_CLASS(var, className) \ 463 var = env->FindClass(className); \ 464 LOG_FATAL_IF(! var, "Unable to find class " className); \ 465 var = jclass(env->NewGlobalRef(var)); 466 467 #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \ 468 var = env->GetMethodID(clazz, methodName, methodDescriptor); \ 469 LOG_FATAL_IF(! var, "Unable to find method " methodName); 470#else 471 #define FIND_CLASS(var, className) 472 #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) 473#endif 474 475int register_android_view_GLES20Canvas(JNIEnv* env) { 476 FIND_CLASS(gRectClassInfo.clazz, "android/graphics/Rect"); 477 GET_METHOD_ID(gRectClassInfo.set, gRectClassInfo.clazz, "set", "(IIII)V"); 478 479 return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods)); 480} 481 482}; 483