GLES20Canvas.java revision e707859415f4c8e1c01228dfaa58fb0a690d442e
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 17package android.view; 18 19import android.graphics.Bitmap; 20import android.graphics.Canvas; 21import android.graphics.ColorFilter; 22import android.graphics.DrawFilter; 23import android.graphics.Matrix; 24import android.graphics.Paint; 25import android.graphics.Path; 26import android.graphics.Picture; 27import android.graphics.PorterDuff; 28import android.graphics.Rect; 29import android.graphics.RectF; 30import android.graphics.Region; 31import android.graphics.Shader; 32import android.graphics.SurfaceTexture; 33import android.graphics.TemporaryBuffer; 34import android.text.GraphicsOperations; 35import android.text.SpannableString; 36import android.text.SpannedString; 37import android.text.TextUtils; 38 39/** 40 * An implementation of Canvas on top of OpenGL ES 2.0. 41 */ 42class GLES20Canvas extends HardwareCanvas { 43 // Must match modifiers used in the JNI layer 44 private static final int MODIFIER_NONE = 0; 45 private static final int MODIFIER_SHADOW = 1; 46 private static final int MODIFIER_SHADER = 2; 47 private static final int MODIFIER_COLOR_FILTER = 4; 48 49 private final boolean mOpaque; 50 private int mRenderer; 51 52 // The native renderer will be destroyed when this object dies. 53 // DO NOT overwrite this reference once it is set. 54 @SuppressWarnings({"unused", "FieldCanBeLocal"}) 55 private CanvasFinalizer mFinalizer; 56 57 private int mWidth; 58 private int mHeight; 59 60 private final float[] mPoint = new float[2]; 61 private final float[] mLine = new float[4]; 62 63 private final Rect mClipBounds = new Rect(); 64 65 private DrawFilter mFilter; 66 67 /////////////////////////////////////////////////////////////////////////// 68 // JNI 69 /////////////////////////////////////////////////////////////////////////// 70 71 private static native boolean nIsAvailable(); 72 private static boolean sIsAvailable = nIsAvailable(); 73 74 static boolean isAvailable() { 75 return sIsAvailable; 76 } 77 78 /////////////////////////////////////////////////////////////////////////// 79 // Constructors 80 /////////////////////////////////////////////////////////////////////////// 81 82 /** 83 * Creates a canvas to render directly on screen. 84 */ 85 GLES20Canvas(boolean translucent) { 86 this(false, translucent); 87 } 88 89 /** 90 * Creates a canvas to render into an FBO. 91 */ 92 GLES20Canvas(int layer, boolean translucent) { 93 mOpaque = !translucent; 94 mRenderer = nCreateLayerRenderer(layer); 95 setupFinalizer(); 96 } 97 98 protected GLES20Canvas(boolean record, boolean translucent) { 99 mOpaque = !translucent; 100 101 if (record) { 102 mRenderer = nCreateDisplayListRenderer(); 103 } else { 104 mRenderer = nCreateRenderer(); 105 } 106 107 setupFinalizer(); 108 } 109 110 private void setupFinalizer() { 111 if (mRenderer == 0) { 112 throw new IllegalStateException("Could not create GLES20Canvas renderer"); 113 } else { 114 mFinalizer = new CanvasFinalizer(mRenderer); 115 } 116 } 117 118 protected void resetDisplayListRenderer() { 119 nResetDisplayListRenderer(mRenderer); 120 } 121 122 private static native int nCreateRenderer(); 123 private static native int nCreateLayerRenderer(int layer); 124 private static native int nCreateDisplayListRenderer(); 125 private static native void nResetDisplayListRenderer(int renderer); 126 private static native void nDestroyRenderer(int renderer); 127 128 private static final class CanvasFinalizer { 129 private final int mRenderer; 130 131 public CanvasFinalizer(int renderer) { 132 mRenderer = renderer; 133 } 134 135 @Override 136 protected void finalize() throws Throwable { 137 try { 138 nDestroyRenderer(mRenderer); 139 } finally { 140 super.finalize(); 141 } 142 } 143 } 144 145 /////////////////////////////////////////////////////////////////////////// 146 // Hardware layers 147 /////////////////////////////////////////////////////////////////////////// 148 149 static native int nCreateTextureLayer(boolean opaque, int[] layerInfo); 150 static native int nCreateLayer(int width, int height, boolean isOpaque, int[] layerInfo); 151 static native void nResizeLayer(int layerId, int width, int height, int[] layerInfo); 152 static native void nUpdateTextureLayer(int layerId, int width, int height, boolean opaque, 153 SurfaceTexture surface); 154 static native void nSetTextureLayerTransform(int layerId, int matrix); 155 static native void nDestroyLayer(int layerId); 156 static native void nDestroyLayerDeferred(int layerId); 157 static native boolean nCopyLayer(int layerId, int bitmap); 158 159 /////////////////////////////////////////////////////////////////////////// 160 // Canvas management 161 /////////////////////////////////////////////////////////////////////////// 162 163 @Override 164 public boolean isOpaque() { 165 return mOpaque; 166 } 167 168 @Override 169 public int getWidth() { 170 return mWidth; 171 } 172 173 @Override 174 public int getHeight() { 175 return mHeight; 176 } 177 178 @Override 179 public int getMaximumBitmapWidth() { 180 return nGetMaximumTextureWidth(); 181 } 182 183 @Override 184 public int getMaximumBitmapHeight() { 185 return nGetMaximumTextureHeight(); 186 } 187 188 private static native int nGetMaximumTextureWidth(); 189 private static native int nGetMaximumTextureHeight(); 190 191 /////////////////////////////////////////////////////////////////////////// 192 // Setup 193 /////////////////////////////////////////////////////////////////////////// 194 195 @Override 196 public void setViewport(int width, int height) { 197 mWidth = width; 198 mHeight = height; 199 200 nSetViewport(mRenderer, width, height); 201 } 202 203 private static native void nSetViewport(int renderer, int width, int height); 204 205 /** 206 * Preserves the back buffer of the current surface after a buffer swap. 207 * Calling this method sets the EGL_SWAP_BEHAVIOR attribute of the current 208 * surface to EGL_BUFFER_PRESERVED. Calling this method requires an EGL 209 * config that supports EGL_SWAP_BEHAVIOR_PRESERVED_BIT. 210 * 211 * @return True if the swap behavior was successfully changed, 212 * false otherwise. 213 * 214 * @hide 215 */ 216 public static boolean preserveBackBuffer() { 217 return nPreserveBackBuffer(); 218 } 219 220 private static native boolean nPreserveBackBuffer(); 221 222 /** 223 * Indicates whether the current surface preserves its back buffer 224 * after a buffer swap. 225 * 226 * @return True, if the surface's EGL_SWAP_BEHAVIOR is EGL_BUFFER_PRESERVED, 227 * false otherwise 228 * 229 * @hide 230 */ 231 public static boolean isBackBufferPreserved() { 232 return nIsBackBufferPreserved(); 233 } 234 235 private static native boolean nIsBackBufferPreserved(); 236 237 /** 238 * Disables v-sync. For performance testing only. 239 * 240 * @hide 241 */ 242 public static void disableVsync() { 243 nDisableVsync(); 244 } 245 246 private static native void nDisableVsync(); 247 248 @Override 249 void onPreDraw(Rect dirty) { 250 if (dirty != null) { 251 nPrepareDirty(mRenderer, dirty.left, dirty.top, dirty.right, dirty.bottom, mOpaque); 252 } else { 253 nPrepare(mRenderer, mOpaque); 254 } 255 } 256 257 private static native void nPrepare(int renderer, boolean opaque); 258 private static native void nPrepareDirty(int renderer, int left, int top, int right, int bottom, 259 boolean opaque); 260 261 @Override 262 void onPostDraw() { 263 nFinish(mRenderer); 264 } 265 266 private static native void nFinish(int renderer); 267 268 @Override 269 public boolean callDrawGLFunction(int drawGLFunction) { 270 return nCallDrawGLFunction(mRenderer, drawGLFunction); 271 } 272 273 private static native boolean nCallDrawGLFunction(int renderer, int drawGLFunction); 274 275 276 /////////////////////////////////////////////////////////////////////////// 277 // Memory 278 /////////////////////////////////////////////////////////////////////////// 279 280 /** 281 * Must match Caches::FlushMode values 282 * 283 * @see #flushCaches(int) 284 */ 285 public static final int FLUSH_CACHES_LAYERS = 0; 286 287 /** 288 * Must match Caches::FlushMode values 289 * 290 * @see #flushCaches(int) 291 */ 292 public static final int FLUSH_CACHES_MODERATE = 1; 293 294 /** 295 * Must match Caches::FlushMode values 296 * 297 * @see #flushCaches(int) 298 */ 299 public static final int FLUSH_CACHES_FULL = 2; 300 301 /** 302 * Flush caches to reclaim as much memory as possible. The amount of memory 303 * to reclaim is indicate by the level parameter. 304 * 305 * The level can be one of {@link #FLUSH_CACHES_MODERATE} or 306 * {@link #FLUSH_CACHES_FULL}. 307 * 308 * @param level Hint about the amount of memory to reclaim 309 * 310 * @hide 311 */ 312 public static void flushCaches(int level) { 313 nFlushCaches(level); 314 } 315 316 private static native void nFlushCaches(int level); 317 318 /////////////////////////////////////////////////////////////////////////// 319 // Display list 320 /////////////////////////////////////////////////////////////////////////// 321 322 int getDisplayList(int displayList) { 323 return nGetDisplayList(mRenderer, displayList); 324 } 325 326 private static native int nGetDisplayList(int renderer, int displayList); 327 328 static void destroyDisplayList(int displayList) { 329 nDestroyDisplayList(displayList); 330 } 331 332 private static native void nDestroyDisplayList(int displayList); 333 334 static int getDisplayListSize(int displayList) { 335 return nGetDisplayListSize(displayList); 336 } 337 338 private static native int nGetDisplayListSize(int displayList); 339 340 @Override 341 public boolean drawDisplayList(DisplayList displayList, int width, int height, Rect dirty) { 342 return nDrawDisplayList(mRenderer, 343 ((GLES20DisplayList) displayList).getNativeDisplayList(), width, height, dirty); 344 } 345 346 private static native boolean nDrawDisplayList(int renderer, int displayList, 347 int width, int height, Rect dirty); 348 349 @Override 350 void outputDisplayList(DisplayList displayList) { 351 nOutputDisplayList(mRenderer, ((GLES20DisplayList) displayList).getNativeDisplayList()); 352 } 353 354 private static native void nOutputDisplayList(int renderer, int displayList); 355 356 /////////////////////////////////////////////////////////////////////////// 357 // Hardware layer 358 /////////////////////////////////////////////////////////////////////////// 359 360 void drawHardwareLayer(HardwareLayer layer, float x, float y, Paint paint) { 361 final GLES20Layer glLayer = (GLES20Layer) layer; 362 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 363 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 364 nDrawLayer(mRenderer, glLayer.getLayer(), x, y, nativePaint); 365 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 366 } 367 368 private static native void nDrawLayer(int renderer, int layer, float x, float y, int paint); 369 370 void interrupt() { 371 nInterrupt(mRenderer); 372 } 373 374 void resume() { 375 nResume(mRenderer); 376 } 377 378 private static native void nInterrupt(int renderer); 379 private static native void nResume(int renderer); 380 381 /////////////////////////////////////////////////////////////////////////// 382 // Clipping 383 /////////////////////////////////////////////////////////////////////////// 384 385 @Override 386 public boolean clipPath(Path path) { 387 throw new UnsupportedOperationException(); 388 } 389 390 @Override 391 public boolean clipPath(Path path, Region.Op op) { 392 throw new UnsupportedOperationException(); 393 } 394 395 @Override 396 public boolean clipRect(float left, float top, float right, float bottom) { 397 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 398 } 399 400 private static native boolean nClipRect(int renderer, float left, float top, 401 float right, float bottom, int op); 402 403 @Override 404 public boolean clipRect(float left, float top, float right, float bottom, Region.Op op) { 405 return nClipRect(mRenderer, left, top, right, bottom, op.nativeInt); 406 } 407 408 @Override 409 public boolean clipRect(int left, int top, int right, int bottom) { 410 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 411 } 412 413 private static native boolean nClipRect(int renderer, int left, int top, int right, int bottom, 414 int op); 415 416 @Override 417 public boolean clipRect(Rect rect) { 418 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 419 Region.Op.INTERSECT.nativeInt); 420 } 421 422 @Override 423 public boolean clipRect(Rect rect, Region.Op op) { 424 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 425 } 426 427 @Override 428 public boolean clipRect(RectF rect) { 429 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 430 Region.Op.INTERSECT.nativeInt); 431 } 432 433 @Override 434 public boolean clipRect(RectF rect, Region.Op op) { 435 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 436 } 437 438 @Override 439 public boolean clipRegion(Region region) { 440 throw new UnsupportedOperationException(); 441 } 442 443 @Override 444 public boolean clipRegion(Region region, Region.Op op) { 445 throw new UnsupportedOperationException(); 446 } 447 448 @Override 449 public boolean getClipBounds(Rect bounds) { 450 return nGetClipBounds(mRenderer, bounds); 451 } 452 453 private static native boolean nGetClipBounds(int renderer, Rect bounds); 454 455 @Override 456 public boolean quickReject(float left, float top, float right, float bottom, EdgeType type) { 457 return nQuickReject(mRenderer, left, top, right, bottom, type.nativeInt); 458 } 459 460 private static native boolean nQuickReject(int renderer, float left, float top, 461 float right, float bottom, int edge); 462 463 @Override 464 public boolean quickReject(Path path, EdgeType type) { 465 throw new UnsupportedOperationException(); 466 } 467 468 @Override 469 public boolean quickReject(RectF rect, EdgeType type) { 470 return quickReject(rect.left, rect.top, rect.right, rect.bottom, type); 471 } 472 473 /////////////////////////////////////////////////////////////////////////// 474 // Transformations 475 /////////////////////////////////////////////////////////////////////////// 476 477 @Override 478 public void translate(float dx, float dy) { 479 if (dx != 0.0f || dy != 0.0f) nTranslate(mRenderer, dx, dy); 480 } 481 482 private static native void nTranslate(int renderer, float dx, float dy); 483 484 @Override 485 public void skew(float sx, float sy) { 486 nSkew(mRenderer, sx, sy); 487 } 488 489 private static native void nSkew(int renderer, float sx, float sy); 490 491 @Override 492 public void rotate(float degrees) { 493 nRotate(mRenderer, degrees); 494 } 495 496 private static native void nRotate(int renderer, float degrees); 497 498 @Override 499 public void scale(float sx, float sy) { 500 nScale(mRenderer, sx, sy); 501 } 502 503 private static native void nScale(int renderer, float sx, float sy); 504 505 @Override 506 public void setMatrix(Matrix matrix) { 507 nSetMatrix(mRenderer, matrix == null ? 0 : matrix.native_instance); 508 } 509 510 private static native void nSetMatrix(int renderer, int matrix); 511 512 @Override 513 public void getMatrix(Matrix matrix) { 514 nGetMatrix(mRenderer, matrix.native_instance); 515 } 516 517 private static native void nGetMatrix(int renderer, int matrix); 518 519 @Override 520 public void concat(Matrix matrix) { 521 nConcatMatrix(mRenderer, matrix.native_instance); 522 } 523 524 private static native void nConcatMatrix(int renderer, int matrix); 525 526 /////////////////////////////////////////////////////////////////////////// 527 // State management 528 /////////////////////////////////////////////////////////////////////////// 529 530 @Override 531 public int save() { 532 return nSave(mRenderer, Canvas.CLIP_SAVE_FLAG | Canvas.MATRIX_SAVE_FLAG); 533 } 534 535 @Override 536 public int save(int saveFlags) { 537 return nSave(mRenderer, saveFlags); 538 } 539 540 private static native int nSave(int renderer, int flags); 541 542 @Override 543 public int saveLayer(RectF bounds, Paint paint, int saveFlags) { 544 if (bounds != null) { 545 return saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom, paint, saveFlags); 546 } 547 548 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 549 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 550 int count = nSaveLayer(mRenderer, nativePaint, saveFlags); 551 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 552 return count; 553 } 554 555 private static native int nSaveLayer(int renderer, int paint, int saveFlags); 556 557 @Override 558 public int saveLayer(float left, float top, float right, float bottom, Paint paint, 559 int saveFlags) { 560 if (left < right && top < bottom) { 561 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 562 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 563 int count = nSaveLayer(mRenderer, left, top, right, bottom, nativePaint, saveFlags); 564 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 565 return count; 566 } 567 return save(saveFlags); 568 } 569 570 private static native int nSaveLayer(int renderer, float left, float top, 571 float right, float bottom, int paint, int saveFlags); 572 573 @Override 574 public int saveLayerAlpha(RectF bounds, int alpha, int saveFlags) { 575 if (bounds != null) { 576 return saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom, 577 alpha, saveFlags); 578 } 579 return nSaveLayerAlpha(mRenderer, alpha, saveFlags); 580 } 581 582 private static native int nSaveLayerAlpha(int renderer, int alpha, int saveFlags); 583 584 @Override 585 public int saveLayerAlpha(float left, float top, float right, float bottom, int alpha, 586 int saveFlags) { 587 if (left < right && top < bottom) { 588 return nSaveLayerAlpha(mRenderer, left, top, right, bottom, alpha, saveFlags); 589 } 590 return save(saveFlags); 591 } 592 593 private static native int nSaveLayerAlpha(int renderer, float left, float top, float right, 594 float bottom, int alpha, int saveFlags); 595 596 @Override 597 public void restore() { 598 nRestore(mRenderer); 599 } 600 601 private static native void nRestore(int renderer); 602 603 @Override 604 public void restoreToCount(int saveCount) { 605 nRestoreToCount(mRenderer, saveCount); 606 } 607 608 private static native void nRestoreToCount(int renderer, int saveCount); 609 610 @Override 611 public int getSaveCount() { 612 return nGetSaveCount(mRenderer); 613 } 614 615 private static native int nGetSaveCount(int renderer); 616 617 /////////////////////////////////////////////////////////////////////////// 618 // Filtering 619 /////////////////////////////////////////////////////////////////////////// 620 621 @Override 622 public void setDrawFilter(DrawFilter filter) { 623 mFilter = filter; 624 } 625 626 @Override 627 public DrawFilter getDrawFilter() { 628 return mFilter; 629 } 630 631 /////////////////////////////////////////////////////////////////////////// 632 // Drawing 633 /////////////////////////////////////////////////////////////////////////// 634 635 @Override 636 public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, 637 Paint paint) { 638 int modifiers = setupModifiers(paint); 639 nDrawArc(mRenderer, oval.left, oval.top, oval.right, oval.bottom, startAngle, sweepAngle, 640 useCenter, paint.mNativePaint); 641 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 642 } 643 644 private static native void nDrawArc(int renderer, float left, float top, 645 float right, float bottom, float startAngle, float sweepAngle, 646 boolean useCenter, int paint); 647 648 @Override 649 public void drawARGB(int a, int r, int g, int b) { 650 drawColor((a & 0xFF) << 24 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 651 } 652 653 @Override 654 public void drawPatch(Bitmap bitmap, byte[] chunks, RectF dst, Paint paint) { 655 // Shaders are ignored when drawing patches 656 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 657 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 658 nDrawPatch(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, chunks, 659 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 660 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 661 } 662 663 private static native void nDrawPatch(int renderer, int bitmap, byte[] buffer, byte[] chunks, 664 float left, float top, float right, float bottom, int paint); 665 666 @Override 667 public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) { 668 // Shaders are ignored when drawing bitmaps 669 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 670 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 671 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, nativePaint); 672 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 673 } 674 675 private static native void nDrawBitmap( 676 int renderer, int bitmap, byte[] buffer, float left, float top, int paint); 677 678 @Override 679 public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) { 680 // Shaders are ignored when drawing bitmaps 681 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 682 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 683 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, 684 matrix.native_instance, nativePaint); 685 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 686 } 687 688 private static native void nDrawBitmap(int renderer, int bitmap, byte[] buff, 689 int matrix, int paint); 690 691 @Override 692 public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) { 693 // Shaders are ignored when drawing bitmaps 694 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 695 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 696 697 int left, top, right, bottom; 698 if (src == null) { 699 left = top = 0; 700 right = bitmap.getWidth(); 701 bottom = bitmap.getHeight(); 702 } else { 703 left = src.left; 704 right = src.right; 705 top = src.top; 706 bottom = src.bottom; 707 } 708 709 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, right, bottom, 710 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 711 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 712 } 713 714 @Override 715 public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) { 716 // Shaders are ignored when drawing bitmaps 717 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 718 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 719 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, src.left, src.top, src.right, 720 src.bottom, dst.left, dst.top, dst.right, dst.bottom, nativePaint); 721 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 722 } 723 724 private static native void nDrawBitmap(int renderer, int bitmap, byte[] buffer, 725 float srcLeft, float srcTop, float srcRight, float srcBottom, 726 float left, float top, float right, float bottom, int paint); 727 728 @Override 729 public void drawBitmap(int[] colors, int offset, int stride, float x, float y, 730 int width, int height, boolean hasAlpha, Paint paint) { 731 // Shaders are ignored when drawing bitmaps 732 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 733 final Bitmap.Config config = hasAlpha ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; 734 final Bitmap b = Bitmap.createBitmap(colors, offset, stride, width, height, config); 735 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 736 nDrawBitmap(mRenderer, b.mNativeBitmap, b.mBuffer, x, y, nativePaint); 737 b.recycle(); 738 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 739 } 740 741 @Override 742 public void drawBitmap(int[] colors, int offset, int stride, int x, int y, 743 int width, int height, boolean hasAlpha, Paint paint) { 744 // Shaders are ignored when drawing bitmaps 745 drawBitmap(colors, offset, stride, (float) x, (float) y, width, height, hasAlpha, paint); 746 } 747 748 @Override 749 public void drawBitmapMesh(Bitmap bitmap, int meshWidth, int meshHeight, float[] verts, 750 int vertOffset, int[] colors, int colorOffset, Paint paint) { 751 if (meshWidth < 0 || meshHeight < 0 || vertOffset < 0 || colorOffset < 0) { 752 throw new ArrayIndexOutOfBoundsException(); 753 } 754 755 if (meshWidth == 0 || meshHeight == 0) { 756 return; 757 } 758 759 final int count = (meshWidth + 1) * (meshHeight + 1); 760 checkRange(verts.length, vertOffset, count * 2); 761 762 // TODO: Colors are ignored for now 763 colors = null; 764 colorOffset = 0; 765 766 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 767 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 768 nDrawBitmapMesh(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, meshWidth, meshHeight, 769 verts, vertOffset, colors, colorOffset, nativePaint); 770 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 771 } 772 773 private static native void nDrawBitmapMesh(int renderer, int bitmap, byte[] buffer, 774 int meshWidth, int meshHeight, float[] verts, int vertOffset, 775 int[] colors, int colorOffset, int paint); 776 777 @Override 778 public void drawCircle(float cx, float cy, float radius, Paint paint) { 779 int modifiers = setupModifiers(paint); 780 nDrawCircle(mRenderer, cx, cy, radius, paint.mNativePaint); 781 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 782 } 783 784 private static native void nDrawCircle(int renderer, float cx, float cy, 785 float radius, int paint); 786 787 @Override 788 public void drawColor(int color) { 789 drawColor(color, PorterDuff.Mode.SRC_OVER); 790 } 791 792 @Override 793 public void drawColor(int color, PorterDuff.Mode mode) { 794 nDrawColor(mRenderer, color, mode.nativeInt); 795 } 796 797 private static native void nDrawColor(int renderer, int color, int mode); 798 799 @Override 800 public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) { 801 mLine[0] = startX; 802 mLine[1] = startY; 803 mLine[2] = stopX; 804 mLine[3] = stopY; 805 drawLines(mLine, 0, 4, paint); 806 } 807 808 @Override 809 public void drawLines(float[] pts, int offset, int count, Paint paint) { 810 if ((offset | count) < 0 || offset + count > pts.length) { 811 throw new IllegalArgumentException("The lines array must contain 4 elements per line."); 812 } 813 int modifiers = setupModifiers(paint); 814 nDrawLines(mRenderer, pts, offset, count, paint.mNativePaint); 815 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 816 } 817 818 private static native void nDrawLines(int renderer, float[] points, 819 int offset, int count, int paint); 820 821 @Override 822 public void drawLines(float[] pts, Paint paint) { 823 drawLines(pts, 0, pts.length, paint); 824 } 825 826 @Override 827 public void drawOval(RectF oval, Paint paint) { 828 int modifiers = setupModifiers(paint); 829 nDrawOval(mRenderer, oval.left, oval.top, oval.right, oval.bottom, paint.mNativePaint); 830 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 831 } 832 833 private static native void nDrawOval(int renderer, float left, float top, 834 float right, float bottom, int paint); 835 836 @Override 837 public void drawPaint(Paint paint) { 838 final Rect r = mClipBounds; 839 nGetClipBounds(mRenderer, r); 840 drawRect(r.left, r.top, r.right, r.bottom, paint); 841 } 842 843 @Override 844 public void drawPath(Path path, Paint paint) { 845 int modifiers = setupModifiers(paint); 846 if (path.isSimplePath) { 847 if (path.rects != null) { 848 nDrawRects(mRenderer, path.rects.mNativeRegion, paint.mNativePaint); 849 } 850 } else { 851 nDrawPath(mRenderer, path.mNativePath, paint.mNativePaint); 852 } 853 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 854 } 855 856 private static native void nDrawPath(int renderer, int path, int paint); 857 private static native void nDrawRects(int renderer, int region, int paint); 858 859 @Override 860 public void drawPicture(Picture picture) { 861 throw new UnsupportedOperationException(); 862 } 863 864 @Override 865 public void drawPicture(Picture picture, Rect dst) { 866 throw new UnsupportedOperationException(); 867 } 868 869 @Override 870 public void drawPicture(Picture picture, RectF dst) { 871 throw new UnsupportedOperationException(); 872 } 873 874 @Override 875 public void drawPoint(float x, float y, Paint paint) { 876 mPoint[0] = x; 877 mPoint[1] = y; 878 drawPoints(mPoint, 0, 2, paint); 879 } 880 881 @Override 882 public void drawPoints(float[] pts, Paint paint) { 883 drawPoints(pts, 0, pts.length, paint); 884 } 885 886 @Override 887 public void drawPoints(float[] pts, int offset, int count, Paint paint) { 888 int modifiers = setupModifiers(paint); 889 nDrawPoints(mRenderer, pts, offset, count, paint.mNativePaint); 890 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 891 } 892 893 private static native void nDrawPoints(int renderer, float[] points, 894 int offset, int count, int paint); 895 896 @Override 897 public void drawPosText(char[] text, int index, int count, float[] pos, Paint paint) { 898 // TODO: Implement 899 } 900 901 @Override 902 public void drawPosText(String text, float[] pos, Paint paint) { 903 // TODO: Implement 904 } 905 906 @Override 907 public void drawRect(float left, float top, float right, float bottom, Paint paint) { 908 int modifiers = setupModifiers(paint); 909 nDrawRect(mRenderer, left, top, right, bottom, paint.mNativePaint); 910 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 911 } 912 913 private static native void nDrawRect(int renderer, float left, float top, 914 float right, float bottom, int paint); 915 916 @Override 917 public void drawRect(Rect r, Paint paint) { 918 drawRect(r.left, r.top, r.right, r.bottom, paint); 919 } 920 921 @Override 922 public void drawRect(RectF r, Paint paint) { 923 drawRect(r.left, r.top, r.right, r.bottom, paint); 924 } 925 926 @Override 927 public void drawRGB(int r, int g, int b) { 928 drawColor(0xFF000000 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 929 } 930 931 @Override 932 public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) { 933 int modifiers = setupModifiers(paint); 934 nDrawRoundRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 935 rx, ry, paint.mNativePaint); 936 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 937 } 938 939 private static native void nDrawRoundRect(int renderer, float left, float top, 940 float right, float bottom, float rx, float y, int paint); 941 942 @Override 943 public void drawText(char[] text, int index, int count, float x, float y, Paint paint) { 944 if ((index | count | (index + count) | (text.length - index - count)) < 0) { 945 throw new IndexOutOfBoundsException(); 946 } 947 948 int modifiers = setupModifiers(paint); 949 try { 950 nDrawText(mRenderer, text, index, count, x, y, paint.mBidiFlags, paint.mNativePaint); 951 } finally { 952 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 953 } 954 } 955 956 private static native void nDrawText(int renderer, char[] text, int index, int count, 957 float x, float y, int bidiFlags, int paint); 958 959 @Override 960 public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) { 961 int modifiers = setupModifiers(paint); 962 try { 963 if (text instanceof String || text instanceof SpannedString || 964 text instanceof SpannableString) { 965 nDrawText(mRenderer, text.toString(), start, end, x, y, paint.mBidiFlags, 966 paint.mNativePaint); 967 } else if (text instanceof GraphicsOperations) { 968 ((GraphicsOperations) text).drawText(this, start, end, x, y, 969 paint); 970 } else { 971 char[] buf = TemporaryBuffer.obtain(end - start); 972 TextUtils.getChars(text, start, end, buf, 0); 973 nDrawText(mRenderer, buf, 0, end - start, x, y, 974 paint.mBidiFlags, paint.mNativePaint); 975 TemporaryBuffer.recycle(buf); 976 } 977 } finally { 978 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 979 } 980 } 981 982 @Override 983 public void drawText(String text, int start, int end, float x, float y, Paint paint) { 984 if ((start | end | (end - start) | (text.length() - end)) < 0) { 985 throw new IndexOutOfBoundsException(); 986 } 987 988 int modifiers = setupModifiers(paint); 989 try { 990 nDrawText(mRenderer, text, start, end, x, y, paint.mBidiFlags, paint.mNativePaint); 991 } finally { 992 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 993 } 994 } 995 996 private static native void nDrawText(int renderer, String text, int start, int end, 997 float x, float y, int bidiFlags, int paint); 998 999 @Override 1000 public void drawText(String text, float x, float y, Paint paint) { 1001 int modifiers = setupModifiers(paint); 1002 try { 1003 nDrawText(mRenderer, text, 0, text.length(), x, y, paint.mBidiFlags, 1004 paint.mNativePaint); 1005 } finally { 1006 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1007 } 1008 } 1009 1010 @Override 1011 public void drawTextOnPath(char[] text, int index, int count, Path path, float hOffset, 1012 float vOffset, Paint paint) { 1013 // TODO: Implement 1014 } 1015 1016 @Override 1017 public void drawTextOnPath(String text, Path path, float hOffset, float vOffset, Paint paint) { 1018 // TODO: Implement 1019 } 1020 1021 @Override 1022 public void drawTextRun(char[] text, int index, int count, int contextIndex, int contextCount, 1023 float x, float y, int dir, Paint paint) { 1024 if ((index | count | text.length - index - count) < 0) { 1025 throw new IndexOutOfBoundsException(); 1026 } 1027 if (dir != DIRECTION_LTR && dir != DIRECTION_RTL) { 1028 throw new IllegalArgumentException("Unknown direction: " + dir); 1029 } 1030 1031 int modifiers = setupModifiers(paint); 1032 try { 1033 nDrawTextRun(mRenderer, text, index, count, contextIndex, contextCount, x, y, dir, 1034 paint.mNativePaint); 1035 } finally { 1036 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1037 } 1038 } 1039 1040 private static native void nDrawTextRun(int renderer, char[] text, int index, int count, 1041 int contextIndex, int contextCount, float x, float y, int dir, int nativePaint); 1042 1043 @Override 1044 public void drawTextRun(CharSequence text, int start, int end, int contextStart, int contextEnd, 1045 float x, float y, int dir, Paint paint) { 1046 if ((start | end | end - start | text.length() - end) < 0) { 1047 throw new IndexOutOfBoundsException(); 1048 } 1049 1050 int modifiers = setupModifiers(paint); 1051 try { 1052 int flags = dir == 0 ? 0 : 1; 1053 if (text instanceof String || text instanceof SpannedString || 1054 text instanceof SpannableString) { 1055 nDrawTextRun(mRenderer, text.toString(), start, end, contextStart, 1056 contextEnd, x, y, flags, paint.mNativePaint); 1057 } else if (text instanceof GraphicsOperations) { 1058 ((GraphicsOperations) text).drawTextRun(this, start, end, 1059 contextStart, contextEnd, x, y, flags, paint); 1060 } else { 1061 int contextLen = contextEnd - contextStart; 1062 int len = end - start; 1063 char[] buf = TemporaryBuffer.obtain(contextLen); 1064 TextUtils.getChars(text, contextStart, contextEnd, buf, 0); 1065 nDrawTextRun(mRenderer, buf, start - contextStart, len, 0, contextLen, 1066 x, y, flags, paint.mNativePaint); 1067 TemporaryBuffer.recycle(buf); 1068 } 1069 } finally { 1070 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1071 } 1072 } 1073 1074 private static native void nDrawTextRun(int renderer, String text, int start, int end, 1075 int contextStart, int contextEnd, float x, float y, int flags, int nativePaint); 1076 1077 @Override 1078 public void drawVertices(VertexMode mode, int vertexCount, float[] verts, int vertOffset, 1079 float[] texs, int texOffset, int[] colors, int colorOffset, short[] indices, 1080 int indexOffset, int indexCount, Paint paint) { 1081 // TODO: Implement 1082 } 1083 1084 private int setupModifiers(Bitmap b, Paint paint) { 1085 if (b.getConfig() == Bitmap.Config.ALPHA_8) { 1086 return setupModifiers(paint); 1087 } 1088 1089 final ColorFilter filter = paint.getColorFilter(); 1090 if (filter != null) { 1091 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1092 return MODIFIER_COLOR_FILTER; 1093 } 1094 1095 return MODIFIER_NONE; 1096 } 1097 1098 private int setupModifiers(Paint paint) { 1099 int modifiers = MODIFIER_NONE; 1100 1101 if (paint.hasShadow) { 1102 nSetupShadow(mRenderer, paint.shadowRadius, paint.shadowDx, paint.shadowDy, 1103 paint.shadowColor); 1104 modifiers |= MODIFIER_SHADOW; 1105 } 1106 1107 final Shader shader = paint.getShader(); 1108 if (shader != null) { 1109 nSetupShader(mRenderer, shader.native_shader); 1110 modifiers |= MODIFIER_SHADER; 1111 } 1112 1113 final ColorFilter filter = paint.getColorFilter(); 1114 if (filter != null) { 1115 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1116 modifiers |= MODIFIER_COLOR_FILTER; 1117 } 1118 1119 return modifiers; 1120 } 1121 1122 private int setupColorFilter(Paint paint) { 1123 final ColorFilter filter = paint.getColorFilter(); 1124 if (filter != null) { 1125 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1126 return MODIFIER_COLOR_FILTER; 1127 } 1128 return MODIFIER_NONE; 1129 } 1130 1131 private static native void nSetupShader(int renderer, int shader); 1132 private static native void nSetupColorFilter(int renderer, int colorFilter); 1133 private static native void nSetupShadow(int renderer, float radius, 1134 float dx, float dy, int color); 1135 1136 private static native void nResetModifiers(int renderer, int modifiers); 1137} 1138