GLES20Canvas.java revision 445c83c7755fae179cf3328e89307e2775e97a5e
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.PaintFlagsDrawFilter; 26import android.graphics.Path; 27import android.graphics.Picture; 28import android.graphics.PorterDuff; 29import android.graphics.Rect; 30import android.graphics.RectF; 31import android.graphics.Region; 32import android.graphics.Shader; 33import android.graphics.SurfaceTexture; 34import android.graphics.TemporaryBuffer; 35import android.text.GraphicsOperations; 36import android.text.SpannableString; 37import android.text.SpannedString; 38import android.text.TextUtils; 39 40/** 41 * An implementation of Canvas on top of OpenGL ES 2.0. 42 */ 43class GLES20Canvas extends HardwareCanvas { 44 // Must match modifiers used in the JNI layer 45 private static final int MODIFIER_NONE = 0; 46 private static final int MODIFIER_SHADOW = 1; 47 private static final int MODIFIER_SHADER = 2; 48 private static final int MODIFIER_COLOR_FILTER = 4; 49 50 private final boolean mOpaque; 51 private int mRenderer; 52 53 // The native renderer will be destroyed when this object dies. 54 // DO NOT overwrite this reference once it is set. 55 @SuppressWarnings({"unused", "FieldCanBeLocal"}) 56 private CanvasFinalizer mFinalizer; 57 58 private int mWidth; 59 private int mHeight; 60 61 private final float[] mPoint = new float[2]; 62 private final float[] mLine = new float[4]; 63 64 private final Rect mClipBounds = new Rect(); 65 private final RectF mPathBounds = new RectF(); 66 67 private DrawFilter mFilter; 68 69 /////////////////////////////////////////////////////////////////////////// 70 // JNI 71 /////////////////////////////////////////////////////////////////////////// 72 73 private static native boolean nIsAvailable(); 74 private static boolean sIsAvailable = nIsAvailable(); 75 76 static boolean isAvailable() { 77 return sIsAvailable; 78 } 79 80 /////////////////////////////////////////////////////////////////////////// 81 // Constructors 82 /////////////////////////////////////////////////////////////////////////// 83 84 /** 85 * Creates a canvas to render directly on screen. 86 */ 87 GLES20Canvas(boolean translucent) { 88 this(false, translucent); 89 } 90 91 /** 92 * Creates a canvas to render into an FBO. 93 */ 94 GLES20Canvas(int layer, boolean translucent) { 95 mOpaque = !translucent; 96 mRenderer = nCreateLayerRenderer(layer); 97 setupFinalizer(); 98 } 99 100 protected GLES20Canvas(boolean record, boolean translucent) { 101 mOpaque = !translucent; 102 103 if (record) { 104 mRenderer = nCreateDisplayListRenderer(); 105 } else { 106 mRenderer = nCreateRenderer(); 107 } 108 109 setupFinalizer(); 110 } 111 112 private void setupFinalizer() { 113 if (mRenderer == 0) { 114 throw new IllegalStateException("Could not create GLES20Canvas renderer"); 115 } else { 116 mFinalizer = new CanvasFinalizer(mRenderer); 117 } 118 } 119 120 protected void resetDisplayListRenderer() { 121 nResetDisplayListRenderer(mRenderer); 122 } 123 124 private static native int nCreateRenderer(); 125 private static native int nCreateLayerRenderer(int layer); 126 private static native int nCreateDisplayListRenderer(); 127 private static native void nResetDisplayListRenderer(int renderer); 128 private static native void nDestroyRenderer(int renderer); 129 130 private static final class CanvasFinalizer { 131 private final int mRenderer; 132 133 public CanvasFinalizer(int renderer) { 134 mRenderer = renderer; 135 } 136 137 @Override 138 protected void finalize() throws Throwable { 139 try { 140 nDestroyRenderer(mRenderer); 141 } finally { 142 super.finalize(); 143 } 144 } 145 } 146 147 /////////////////////////////////////////////////////////////////////////// 148 // Hardware layers 149 /////////////////////////////////////////////////////////////////////////// 150 151 static native int nCreateTextureLayer(boolean opaque, int[] layerInfo); 152 static native int nCreateLayer(int width, int height, boolean isOpaque, int[] layerInfo); 153 static native void nResizeLayer(int layerId, int width, int height, int[] layerInfo); 154 static native void nUpdateTextureLayer(int layerId, int width, int height, boolean opaque, 155 SurfaceTexture surface); 156 static native void nSetTextureLayerTransform(int layerId, int matrix); 157 static native void nDestroyLayer(int layerId); 158 static native void nDestroyLayerDeferred(int layerId); 159 static native void nFlushLayer(int layerId); 160 static native boolean nCopyLayer(int layerId, int bitmap); 161 162 /////////////////////////////////////////////////////////////////////////// 163 // Canvas management 164 /////////////////////////////////////////////////////////////////////////// 165 166 @Override 167 public boolean isOpaque() { 168 return mOpaque; 169 } 170 171 @Override 172 public int getWidth() { 173 return mWidth; 174 } 175 176 @Override 177 public int getHeight() { 178 return mHeight; 179 } 180 181 @Override 182 public int getMaximumBitmapWidth() { 183 return nGetMaximumTextureWidth(); 184 } 185 186 @Override 187 public int getMaximumBitmapHeight() { 188 return nGetMaximumTextureHeight(); 189 } 190 191 private static native int nGetMaximumTextureWidth(); 192 private static native int nGetMaximumTextureHeight(); 193 194 /////////////////////////////////////////////////////////////////////////// 195 // Setup 196 /////////////////////////////////////////////////////////////////////////// 197 198 @Override 199 public void setViewport(int width, int height) { 200 mWidth = width; 201 mHeight = height; 202 203 nSetViewport(mRenderer, width, height); 204 } 205 206 private static native void nSetViewport(int renderer, int width, int height); 207 208 /** 209 * Preserves the back buffer of the current surface after a buffer swap. 210 * Calling this method sets the EGL_SWAP_BEHAVIOR attribute of the current 211 * surface to EGL_BUFFER_PRESERVED. Calling this method requires an EGL 212 * config that supports EGL_SWAP_BEHAVIOR_PRESERVED_BIT. 213 * 214 * @return True if the swap behavior was successfully changed, 215 * false otherwise. 216 * 217 * @hide 218 */ 219 public static boolean preserveBackBuffer() { 220 return nPreserveBackBuffer(); 221 } 222 223 private static native boolean nPreserveBackBuffer(); 224 225 /** 226 * Indicates whether the current surface preserves its back buffer 227 * after a buffer swap. 228 * 229 * @return True, if the surface's EGL_SWAP_BEHAVIOR is EGL_BUFFER_PRESERVED, 230 * false otherwise 231 * 232 * @hide 233 */ 234 public static boolean isBackBufferPreserved() { 235 return nIsBackBufferPreserved(); 236 } 237 238 private static native boolean nIsBackBufferPreserved(); 239 240 /** 241 * Disables v-sync. For performance testing only. 242 * 243 * @hide 244 */ 245 public static void disableVsync() { 246 nDisableVsync(); 247 } 248 249 private static native void nDisableVsync(); 250 251 @Override 252 public void onPreDraw(Rect dirty) { 253 if (dirty != null) { 254 nPrepareDirty(mRenderer, dirty.left, dirty.top, dirty.right, dirty.bottom, mOpaque); 255 } else { 256 nPrepare(mRenderer, mOpaque); 257 } 258 } 259 260 private static native void nPrepare(int renderer, boolean opaque); 261 private static native void nPrepareDirty(int renderer, int left, int top, int right, int bottom, 262 boolean opaque); 263 264 @Override 265 public void onPostDraw() { 266 nFinish(mRenderer); 267 } 268 269 private static native void nFinish(int renderer); 270 271 /** 272 * Returns the size of the stencil buffer required by the underlying 273 * implementation. 274 * 275 * @return The minimum number of bits the stencil buffer must. Always >= 0. 276 * 277 * @hide 278 */ 279 public static int getStencilSize() { 280 return nGetStencilSize(); 281 } 282 283 private static native int nGetStencilSize(); 284 285 /////////////////////////////////////////////////////////////////////////// 286 // Functor 287 /////////////////////////////////////////////////////////////////////////// 288 289 @Override 290 public boolean callDrawGLFunction(int drawGLFunction) { 291 return nCallDrawGLFunction(mRenderer, drawGLFunction); 292 } 293 294 private static native boolean nCallDrawGLFunction(int renderer, int drawGLFunction); 295 296 /////////////////////////////////////////////////////////////////////////// 297 // Memory 298 /////////////////////////////////////////////////////////////////////////// 299 300 /** 301 * Must match Caches::FlushMode values 302 * 303 * @see #flushCaches(int) 304 */ 305 public static final int FLUSH_CACHES_LAYERS = 0; 306 307 /** 308 * Must match Caches::FlushMode values 309 * 310 * @see #flushCaches(int) 311 */ 312 public static final int FLUSH_CACHES_MODERATE = 1; 313 314 /** 315 * Must match Caches::FlushMode values 316 * 317 * @see #flushCaches(int) 318 */ 319 public static final int FLUSH_CACHES_FULL = 2; 320 321 /** 322 * Flush caches to reclaim as much memory as possible. The amount of memory 323 * to reclaim is indicate by the level parameter. 324 * 325 * The level can be one of {@link #FLUSH_CACHES_MODERATE} or 326 * {@link #FLUSH_CACHES_FULL}. 327 * 328 * @param level Hint about the amount of memory to reclaim 329 * 330 * @hide 331 */ 332 public static void flushCaches(int level) { 333 nFlushCaches(level); 334 } 335 336 private static native void nFlushCaches(int level); 337 338 /** 339 * Release all resources associated with the underlying caches. This should 340 * only be called after a full flushCaches(). 341 * 342 * @hide 343 */ 344 public static void terminateCaches() { 345 nTerminateCaches(); 346 } 347 348 private static native void nTerminateCaches(); 349 350 /** 351 * @hide 352 */ 353 public static void initCaches() { 354 nInitCaches(); 355 } 356 357 private static native void nInitCaches(); 358 359 /////////////////////////////////////////////////////////////////////////// 360 // Display list 361 /////////////////////////////////////////////////////////////////////////// 362 363 int getDisplayList(int displayList) { 364 return nGetDisplayList(mRenderer, displayList); 365 } 366 367 private static native int nGetDisplayList(int renderer, int displayList); 368 369 static void destroyDisplayList(int displayList) { 370 nDestroyDisplayList(displayList); 371 } 372 373 private static native void nDestroyDisplayList(int displayList); 374 375 static int getDisplayListSize(int displayList) { 376 return nGetDisplayListSize(displayList); 377 } 378 379 private static native int nGetDisplayListSize(int displayList); 380 381 static void setDisplayListName(int displayList, String name) { 382 nSetDisplayListName(displayList, name); 383 } 384 385 private static native void nSetDisplayListName(int displayList, String name); 386 387 @Override 388 public boolean drawDisplayList(DisplayList displayList, int width, int height, Rect dirty) { 389 return nDrawDisplayList(mRenderer, 390 ((GLES20DisplayList) displayList).getNativeDisplayList(), width, height, dirty); 391 } 392 393 private static native boolean nDrawDisplayList(int renderer, int displayList, 394 int width, int height, Rect dirty); 395 396 @Override 397 void outputDisplayList(DisplayList displayList) { 398 nOutputDisplayList(mRenderer, ((GLES20DisplayList) displayList).getNativeDisplayList()); 399 } 400 401 private static native void nOutputDisplayList(int renderer, int displayList); 402 403 /////////////////////////////////////////////////////////////////////////// 404 // Hardware layer 405 /////////////////////////////////////////////////////////////////////////// 406 407 void drawHardwareLayer(HardwareLayer layer, float x, float y, Paint paint) { 408 final GLES20Layer glLayer = (GLES20Layer) layer; 409 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 410 try { 411 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 412 nDrawLayer(mRenderer, glLayer.getLayer(), x, y, nativePaint); 413 } finally { 414 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 415 } 416 } 417 418 private static native void nDrawLayer(int renderer, int layer, float x, float y, int paint); 419 420 void interrupt() { 421 nInterrupt(mRenderer); 422 } 423 424 void resume() { 425 nResume(mRenderer); 426 } 427 428 private static native void nInterrupt(int renderer); 429 private static native void nResume(int renderer); 430 431 /////////////////////////////////////////////////////////////////////////// 432 // Clipping 433 /////////////////////////////////////////////////////////////////////////// 434 435 @Override 436 public boolean clipPath(Path path) { 437 // TODO: Implement 438 path.computeBounds(mPathBounds, true); 439 return nClipRect(mRenderer, mPathBounds.left, mPathBounds.top, 440 mPathBounds.right, mPathBounds.bottom, Region.Op.INTERSECT.nativeInt); 441 } 442 443 @Override 444 public boolean clipPath(Path path, Region.Op op) { 445 // TODO: Implement 446 path.computeBounds(mPathBounds, true); 447 return nClipRect(mRenderer, mPathBounds.left, mPathBounds.top, 448 mPathBounds.right, mPathBounds.bottom, op.nativeInt); 449 } 450 451 @Override 452 public boolean clipRect(float left, float top, float right, float bottom) { 453 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 454 } 455 456 private static native boolean nClipRect(int renderer, float left, float top, 457 float right, float bottom, int op); 458 459 @Override 460 public boolean clipRect(float left, float top, float right, float bottom, Region.Op op) { 461 return nClipRect(mRenderer, left, top, right, bottom, op.nativeInt); 462 } 463 464 @Override 465 public boolean clipRect(int left, int top, int right, int bottom) { 466 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 467 } 468 469 private static native boolean nClipRect(int renderer, int left, int top, int right, int bottom, 470 int op); 471 472 @Override 473 public boolean clipRect(Rect rect) { 474 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 475 Region.Op.INTERSECT.nativeInt); 476 } 477 478 @Override 479 public boolean clipRect(Rect rect, Region.Op op) { 480 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 481 } 482 483 @Override 484 public boolean clipRect(RectF rect) { 485 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 486 Region.Op.INTERSECT.nativeInt); 487 } 488 489 @Override 490 public boolean clipRect(RectF rect, Region.Op op) { 491 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 492 } 493 494 @Override 495 public boolean clipRegion(Region region) { 496 // TODO: Implement 497 region.getBounds(mClipBounds); 498 return nClipRect(mRenderer, mClipBounds.left, mClipBounds.top, 499 mClipBounds.right, mClipBounds.bottom, Region.Op.INTERSECT.nativeInt); 500 } 501 502 @Override 503 public boolean clipRegion(Region region, Region.Op op) { 504 // TODO: Implement 505 region.getBounds(mClipBounds); 506 return nClipRect(mRenderer, mClipBounds.left, mClipBounds.top, 507 mClipBounds.right, mClipBounds.bottom, op.nativeInt); 508 } 509 510 @Override 511 public boolean getClipBounds(Rect bounds) { 512 return nGetClipBounds(mRenderer, bounds); 513 } 514 515 private static native boolean nGetClipBounds(int renderer, Rect bounds); 516 517 @Override 518 public boolean quickReject(float left, float top, float right, float bottom, EdgeType type) { 519 return nQuickReject(mRenderer, left, top, right, bottom, type.nativeInt); 520 } 521 522 private static native boolean nQuickReject(int renderer, float left, float top, 523 float right, float bottom, int edge); 524 525 @Override 526 public boolean quickReject(Path path, EdgeType type) { 527 path.computeBounds(mPathBounds, true); 528 return nQuickReject(mRenderer, mPathBounds.left, mPathBounds.top, 529 mPathBounds.right, mPathBounds.bottom, type.nativeInt); 530 } 531 532 @Override 533 public boolean quickReject(RectF rect, EdgeType type) { 534 return nQuickReject(mRenderer, rect.left, rect.top, rect.right, rect.bottom, type.nativeInt); 535 } 536 537 /////////////////////////////////////////////////////////////////////////// 538 // Transformations 539 /////////////////////////////////////////////////////////////////////////// 540 541 @Override 542 public void translate(float dx, float dy) { 543 if (dx != 0.0f || dy != 0.0f) nTranslate(mRenderer, dx, dy); 544 } 545 546 private static native void nTranslate(int renderer, float dx, float dy); 547 548 @Override 549 public void skew(float sx, float sy) { 550 nSkew(mRenderer, sx, sy); 551 } 552 553 private static native void nSkew(int renderer, float sx, float sy); 554 555 @Override 556 public void rotate(float degrees) { 557 nRotate(mRenderer, degrees); 558 } 559 560 private static native void nRotate(int renderer, float degrees); 561 562 @Override 563 public void scale(float sx, float sy) { 564 nScale(mRenderer, sx, sy); 565 } 566 567 private static native void nScale(int renderer, float sx, float sy); 568 569 @Override 570 public void setMatrix(Matrix matrix) { 571 nSetMatrix(mRenderer, matrix == null ? 0 : matrix.native_instance); 572 } 573 574 private static native void nSetMatrix(int renderer, int matrix); 575 576 @SuppressWarnings("deprecation") 577 @Override 578 public void getMatrix(Matrix matrix) { 579 nGetMatrix(mRenderer, matrix.native_instance); 580 } 581 582 private static native void nGetMatrix(int renderer, int matrix); 583 584 @Override 585 public void concat(Matrix matrix) { 586 nConcatMatrix(mRenderer, matrix.native_instance); 587 } 588 589 private static native void nConcatMatrix(int renderer, int matrix); 590 591 /////////////////////////////////////////////////////////////////////////// 592 // State management 593 /////////////////////////////////////////////////////////////////////////// 594 595 @Override 596 public int save() { 597 return nSave(mRenderer, Canvas.CLIP_SAVE_FLAG | Canvas.MATRIX_SAVE_FLAG); 598 } 599 600 @Override 601 public int save(int saveFlags) { 602 return nSave(mRenderer, saveFlags); 603 } 604 605 private static native int nSave(int renderer, int flags); 606 607 @Override 608 public int saveLayer(RectF bounds, Paint paint, int saveFlags) { 609 if (bounds != null) { 610 return saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom, paint, saveFlags); 611 } 612 613 int count; 614 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 615 try { 616 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 617 count = nSaveLayer(mRenderer, nativePaint, saveFlags); 618 } finally { 619 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 620 } 621 return count; 622 } 623 624 private static native int nSaveLayer(int renderer, int paint, int saveFlags); 625 626 @Override 627 public int saveLayer(float left, float top, float right, float bottom, Paint paint, 628 int saveFlags) { 629 if (left < right && top < bottom) { 630 int count; 631 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 632 try { 633 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 634 count = nSaveLayer(mRenderer, left, top, right, bottom, nativePaint, saveFlags); 635 } finally { 636 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 637 } 638 return count; 639 } 640 return save(saveFlags); 641 } 642 643 private static native int nSaveLayer(int renderer, float left, float top, 644 float right, float bottom, int paint, int saveFlags); 645 646 @Override 647 public int saveLayerAlpha(RectF bounds, int alpha, int saveFlags) { 648 if (bounds != null) { 649 return saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom, 650 alpha, saveFlags); 651 } 652 return nSaveLayerAlpha(mRenderer, alpha, saveFlags); 653 } 654 655 private static native int nSaveLayerAlpha(int renderer, int alpha, int saveFlags); 656 657 @Override 658 public int saveLayerAlpha(float left, float top, float right, float bottom, int alpha, 659 int saveFlags) { 660 if (left < right && top < bottom) { 661 return nSaveLayerAlpha(mRenderer, left, top, right, bottom, alpha, saveFlags); 662 } 663 return save(saveFlags); 664 } 665 666 private static native int nSaveLayerAlpha(int renderer, float left, float top, float right, 667 float bottom, int alpha, int saveFlags); 668 669 @Override 670 public void restore() { 671 nRestore(mRenderer); 672 } 673 674 private static native void nRestore(int renderer); 675 676 @Override 677 public void restoreToCount(int saveCount) { 678 nRestoreToCount(mRenderer, saveCount); 679 } 680 681 private static native void nRestoreToCount(int renderer, int saveCount); 682 683 @Override 684 public int getSaveCount() { 685 return nGetSaveCount(mRenderer); 686 } 687 688 private static native int nGetSaveCount(int renderer); 689 690 /////////////////////////////////////////////////////////////////////////// 691 // Filtering 692 /////////////////////////////////////////////////////////////////////////// 693 694 @Override 695 public void setDrawFilter(DrawFilter filter) { 696 mFilter = filter; 697 if (filter == null) { 698 nResetPaintFilter(mRenderer); 699 } else if (filter instanceof PaintFlagsDrawFilter) { 700 PaintFlagsDrawFilter flagsFilter = (PaintFlagsDrawFilter) filter; 701 nSetupPaintFilter(mRenderer, flagsFilter.clearBits, flagsFilter.setBits); 702 } 703 } 704 705 private static native void nResetPaintFilter(int renderer); 706 private static native void nSetupPaintFilter(int renderer, int clearBits, int setBits); 707 708 @Override 709 public DrawFilter getDrawFilter() { 710 return mFilter; 711 } 712 713 /////////////////////////////////////////////////////////////////////////// 714 // Drawing 715 /////////////////////////////////////////////////////////////////////////// 716 717 @Override 718 public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, 719 Paint paint) { 720 int modifiers = setupModifiers(paint); 721 try { 722 nDrawArc(mRenderer, oval.left, oval.top, oval.right, oval.bottom, 723 startAngle, sweepAngle, useCenter, paint.mNativePaint); 724 } finally { 725 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 726 } 727 } 728 729 private static native void nDrawArc(int renderer, float left, float top, 730 float right, float bottom, float startAngle, float sweepAngle, 731 boolean useCenter, int paint); 732 733 @Override 734 public void drawARGB(int a, int r, int g, int b) { 735 drawColor((a & 0xFF) << 24 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 736 } 737 738 @Override 739 public void drawPatch(Bitmap bitmap, byte[] chunks, RectF dst, Paint paint) { 740 if (bitmap.isRecycled()) throw new IllegalArgumentException("Cannot draw recycled bitmaps"); 741 // Shaders are ignored when drawing patches 742 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 743 try { 744 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 745 nDrawPatch(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, chunks, 746 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 747 } finally { 748 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 749 } 750 } 751 752 private static native void nDrawPatch(int renderer, int bitmap, byte[] buffer, byte[] chunks, 753 float left, float top, float right, float bottom, int paint); 754 755 @Override 756 public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) { 757 if (bitmap.isRecycled()) throw new IllegalArgumentException("Cannot draw recycled bitmaps"); 758 // Shaders are ignored when drawing bitmaps 759 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 760 try { 761 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 762 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, nativePaint); 763 } finally { 764 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 765 } 766 } 767 768 private static native void nDrawBitmap( 769 int renderer, int bitmap, byte[] buffer, float left, float top, int paint); 770 771 @Override 772 public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) { 773 if (bitmap.isRecycled()) throw new IllegalArgumentException("Cannot draw recycled bitmaps"); 774 // Shaders are ignored when drawing bitmaps 775 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 776 try { 777 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 778 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, 779 matrix.native_instance, nativePaint); 780 } finally { 781 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 782 } 783 } 784 785 private static native void nDrawBitmap(int renderer, int bitmap, byte[] buff, 786 int matrix, int paint); 787 788 @Override 789 public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) { 790 if (bitmap.isRecycled()) throw new IllegalArgumentException("Cannot draw recycled bitmaps"); 791 // Shaders are ignored when drawing bitmaps 792 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 793 try { 794 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 795 796 int left, top, right, bottom; 797 if (src == null) { 798 left = top = 0; 799 right = bitmap.getWidth(); 800 bottom = bitmap.getHeight(); 801 } else { 802 left = src.left; 803 right = src.right; 804 top = src.top; 805 bottom = src.bottom; 806 } 807 808 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, right, bottom, 809 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 810 } finally { 811 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 812 } 813 } 814 815 @Override 816 public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) { 817 if (bitmap.isRecycled()) throw new IllegalArgumentException("Cannot draw recycled bitmaps"); 818 // Shaders are ignored when drawing bitmaps 819 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 820 try { 821 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 822 823 float left, top, right, bottom; 824 if (src == null) { 825 left = top = 0; 826 right = bitmap.getWidth(); 827 bottom = bitmap.getHeight(); 828 } else { 829 left = src.left; 830 right = src.right; 831 top = src.top; 832 bottom = src.bottom; 833 } 834 835 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, right, bottom, 836 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 837 } finally { 838 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 839 } 840 } 841 842 private static native void nDrawBitmap(int renderer, int bitmap, byte[] buffer, 843 float srcLeft, float srcTop, float srcRight, float srcBottom, 844 float left, float top, float right, float bottom, int paint); 845 846 @Override 847 public void drawBitmap(int[] colors, int offset, int stride, float x, float y, 848 int width, int height, boolean hasAlpha, Paint paint) { 849 // Shaders are ignored when drawing bitmaps 850 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 851 try { 852 final Bitmap.Config config = hasAlpha ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; 853 final Bitmap b = Bitmap.createBitmap(colors, offset, stride, width, height, config); 854 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 855 nDrawBitmap(mRenderer, b.mNativeBitmap, b.mBuffer, x, y, nativePaint); 856 b.recycle(); 857 } finally { 858 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 859 } 860 } 861 862 @Override 863 public void drawBitmap(int[] colors, int offset, int stride, int x, int y, 864 int width, int height, boolean hasAlpha, Paint paint) { 865 // Shaders are ignored when drawing bitmaps 866 drawBitmap(colors, offset, stride, (float) x, (float) y, width, height, hasAlpha, paint); 867 } 868 869 @Override 870 public void drawBitmapMesh(Bitmap bitmap, int meshWidth, int meshHeight, float[] verts, 871 int vertOffset, int[] colors, int colorOffset, Paint paint) { 872 if (bitmap.isRecycled()) throw new IllegalArgumentException("Cannot draw recycled bitmaps"); 873 if (meshWidth < 0 || meshHeight < 0 || vertOffset < 0 || colorOffset < 0) { 874 throw new ArrayIndexOutOfBoundsException(); 875 } 876 877 if (meshWidth == 0 || meshHeight == 0) { 878 return; 879 } 880 881 final int count = (meshWidth + 1) * (meshHeight + 1); 882 checkRange(verts.length, vertOffset, count * 2); 883 884 // TODO: Colors are ignored for now 885 colors = null; 886 colorOffset = 0; 887 888 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 889 try { 890 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 891 nDrawBitmapMesh(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, meshWidth, meshHeight, 892 verts, vertOffset, colors, colorOffset, nativePaint); 893 } finally { 894 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 895 } 896 } 897 898 private static native void nDrawBitmapMesh(int renderer, int bitmap, byte[] buffer, 899 int meshWidth, int meshHeight, float[] verts, int vertOffset, 900 int[] colors, int colorOffset, int paint); 901 902 @Override 903 public void drawCircle(float cx, float cy, float radius, Paint paint) { 904 int modifiers = setupModifiers(paint); 905 try { 906 nDrawCircle(mRenderer, cx, cy, radius, paint.mNativePaint); 907 } finally { 908 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 909 } 910 } 911 912 private static native void nDrawCircle(int renderer, float cx, float cy, 913 float radius, int paint); 914 915 @Override 916 public void drawColor(int color) { 917 drawColor(color, PorterDuff.Mode.SRC_OVER); 918 } 919 920 @Override 921 public void drawColor(int color, PorterDuff.Mode mode) { 922 nDrawColor(mRenderer, color, mode.nativeInt); 923 } 924 925 private static native void nDrawColor(int renderer, int color, int mode); 926 927 @Override 928 public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) { 929 mLine[0] = startX; 930 mLine[1] = startY; 931 mLine[2] = stopX; 932 mLine[3] = stopY; 933 drawLines(mLine, 0, 4, paint); 934 } 935 936 @Override 937 public void drawLines(float[] pts, int offset, int count, Paint paint) { 938 if ((offset | count) < 0 || offset + count > pts.length) { 939 throw new IllegalArgumentException("The lines array must contain 4 elements per line."); 940 } 941 int modifiers = setupModifiers(paint); 942 try { 943 nDrawLines(mRenderer, pts, offset, count, paint.mNativePaint); 944 } finally { 945 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 946 } 947 } 948 949 private static native void nDrawLines(int renderer, float[] points, 950 int offset, int count, int paint); 951 952 @Override 953 public void drawLines(float[] pts, Paint paint) { 954 drawLines(pts, 0, pts.length, paint); 955 } 956 957 @Override 958 public void drawOval(RectF oval, Paint paint) { 959 int modifiers = setupModifiers(paint); 960 try { 961 nDrawOval(mRenderer, oval.left, oval.top, oval.right, oval.bottom, paint.mNativePaint); 962 } finally { 963 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 964 } 965 } 966 967 private static native void nDrawOval(int renderer, float left, float top, 968 float right, float bottom, int paint); 969 970 @Override 971 public void drawPaint(Paint paint) { 972 final Rect r = mClipBounds; 973 nGetClipBounds(mRenderer, r); 974 drawRect(r.left, r.top, r.right, r.bottom, paint); 975 } 976 977 @Override 978 public void drawPath(Path path, Paint paint) { 979 int modifiers = setupModifiers(paint); 980 try { 981 if (path.isSimplePath) { 982 if (path.rects != null) { 983 nDrawRects(mRenderer, path.rects.mNativeRegion, paint.mNativePaint); 984 } 985 } else { 986 nDrawPath(mRenderer, path.mNativePath, paint.mNativePaint); 987 } 988 } finally { 989 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 990 } 991 } 992 993 private static native void nDrawPath(int renderer, int path, int paint); 994 private static native void nDrawRects(int renderer, int region, int paint); 995 996 @Override 997 public void drawPicture(Picture picture) { 998 if (picture.createdFromStream) { 999 return; 1000 } 1001 1002 picture.endRecording(); 1003 // TODO: Implement rendering 1004 } 1005 1006 @Override 1007 public void drawPicture(Picture picture, Rect dst) { 1008 if (picture.createdFromStream) { 1009 return; 1010 } 1011 1012 save(); 1013 translate(dst.left, dst.top); 1014 if (picture.getWidth() > 0 && picture.getHeight() > 0) { 1015 scale(dst.width() / picture.getWidth(), dst.height() / picture.getHeight()); 1016 } 1017 drawPicture(picture); 1018 restore(); 1019 } 1020 1021 @Override 1022 public void drawPicture(Picture picture, RectF dst) { 1023 if (picture.createdFromStream) { 1024 return; 1025 } 1026 1027 save(); 1028 translate(dst.left, dst.top); 1029 if (picture.getWidth() > 0 && picture.getHeight() > 0) { 1030 scale(dst.width() / picture.getWidth(), dst.height() / picture.getHeight()); 1031 } 1032 drawPicture(picture); 1033 restore(); 1034 } 1035 1036 @Override 1037 public void drawPoint(float x, float y, Paint paint) { 1038 mPoint[0] = x; 1039 mPoint[1] = y; 1040 drawPoints(mPoint, 0, 2, paint); 1041 } 1042 1043 @Override 1044 public void drawPoints(float[] pts, Paint paint) { 1045 drawPoints(pts, 0, pts.length, paint); 1046 } 1047 1048 @Override 1049 public void drawPoints(float[] pts, int offset, int count, Paint paint) { 1050 int modifiers = setupModifiers(paint); 1051 try { 1052 nDrawPoints(mRenderer, pts, offset, count, paint.mNativePaint); 1053 } finally { 1054 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1055 } 1056 } 1057 1058 private static native void nDrawPoints(int renderer, float[] points, 1059 int offset, int count, int paint); 1060 1061 @SuppressWarnings("deprecation") 1062 @Override 1063 public void drawPosText(char[] text, int index, int count, float[] pos, Paint paint) { 1064 if (index < 0 || index + count > text.length || count * 2 > pos.length) { 1065 throw new IndexOutOfBoundsException(); 1066 } 1067 1068 int modifiers = setupModifiers(paint); 1069 try { 1070 nDrawPosText(mRenderer, text, index, count, pos, paint.mNativePaint); 1071 } finally { 1072 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1073 } 1074 } 1075 1076 private static native void nDrawPosText(int renderer, char[] text, int index, int count, 1077 float[] pos, int paint); 1078 1079 @SuppressWarnings("deprecation") 1080 @Override 1081 public void drawPosText(String text, float[] pos, Paint paint) { 1082 if (text.length() * 2 > pos.length) { 1083 throw new ArrayIndexOutOfBoundsException(); 1084 } 1085 1086 int modifiers = setupModifiers(paint); 1087 try { 1088 nDrawPosText(mRenderer, text, 0, text.length(), pos, paint.mNativePaint); 1089 } finally { 1090 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1091 } 1092 } 1093 1094 private static native void nDrawPosText(int renderer, String text, int start, int end, 1095 float[] pos, int paint); 1096 1097 @Override 1098 public void drawRect(float left, float top, float right, float bottom, Paint paint) { 1099 int modifiers = setupModifiers(paint); 1100 try { 1101 nDrawRect(mRenderer, left, top, right, bottom, paint.mNativePaint); 1102 } finally { 1103 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1104 } 1105 } 1106 1107 private static native void nDrawRect(int renderer, float left, float top, 1108 float right, float bottom, int paint); 1109 1110 @Override 1111 public void drawRect(Rect r, Paint paint) { 1112 drawRect(r.left, r.top, r.right, r.bottom, paint); 1113 } 1114 1115 @Override 1116 public void drawRect(RectF r, Paint paint) { 1117 drawRect(r.left, r.top, r.right, r.bottom, paint); 1118 } 1119 1120 @Override 1121 public void drawRGB(int r, int g, int b) { 1122 drawColor(0xFF000000 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 1123 } 1124 1125 @Override 1126 public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) { 1127 int modifiers = setupModifiers(paint); 1128 try { 1129 nDrawRoundRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 1130 rx, ry, paint.mNativePaint); 1131 } finally { 1132 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1133 } 1134 } 1135 1136 private static native void nDrawRoundRect(int renderer, float left, float top, 1137 float right, float bottom, float rx, float y, int paint); 1138 1139 @Override 1140 public void drawText(char[] text, int index, int count, float x, float y, Paint paint) { 1141 if ((index | count | (index + count) | (text.length - index - count)) < 0) { 1142 throw new IndexOutOfBoundsException(); 1143 } 1144 1145 int modifiers = setupModifiers(paint); 1146 try { 1147 nDrawText(mRenderer, text, index, count, x, y, paint.mBidiFlags, paint.mNativePaint); 1148 } finally { 1149 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1150 } 1151 } 1152 1153 private static native void nDrawText(int renderer, char[] text, int index, int count, 1154 float x, float y, int bidiFlags, int paint); 1155 1156 @Override 1157 public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) { 1158 int modifiers = setupModifiers(paint); 1159 try { 1160 if (text instanceof String || text instanceof SpannedString || 1161 text instanceof SpannableString) { 1162 nDrawText(mRenderer, text.toString(), start, end, x, y, paint.mBidiFlags, 1163 paint.mNativePaint); 1164 } else if (text instanceof GraphicsOperations) { 1165 ((GraphicsOperations) text).drawText(this, start, end, x, y, 1166 paint); 1167 } else { 1168 char[] buf = TemporaryBuffer.obtain(end - start); 1169 TextUtils.getChars(text, start, end, buf, 0); 1170 nDrawText(mRenderer, buf, 0, end - start, x, y, 1171 paint.mBidiFlags, paint.mNativePaint); 1172 TemporaryBuffer.recycle(buf); 1173 } 1174 } finally { 1175 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1176 } 1177 } 1178 1179 @Override 1180 public void drawText(String text, int start, int end, float x, float y, Paint paint) { 1181 if ((start | end | (end - start) | (text.length() - end)) < 0) { 1182 throw new IndexOutOfBoundsException(); 1183 } 1184 1185 int modifiers = setupModifiers(paint); 1186 try { 1187 nDrawText(mRenderer, text, start, end, x, y, paint.mBidiFlags, paint.mNativePaint); 1188 } finally { 1189 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1190 } 1191 } 1192 1193 private static native void nDrawText(int renderer, String text, int start, int end, 1194 float x, float y, int bidiFlags, int paint); 1195 1196 @Override 1197 public void drawText(String text, float x, float y, Paint paint) { 1198 int modifiers = setupModifiers(paint); 1199 try { 1200 nDrawText(mRenderer, text, 0, text.length(), x, y, paint.mBidiFlags, 1201 paint.mNativePaint); 1202 } finally { 1203 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1204 } 1205 } 1206 1207 @Override 1208 public void drawTextOnPath(char[] text, int index, int count, Path path, float hOffset, 1209 float vOffset, Paint paint) { 1210 // TODO: Implement 1211 } 1212 1213 @Override 1214 public void drawTextOnPath(String text, Path path, float hOffset, float vOffset, Paint paint) { 1215 // TODO: Implement 1216 } 1217 1218 @Override 1219 public void drawTextRun(char[] text, int index, int count, int contextIndex, int contextCount, 1220 float x, float y, int dir, Paint paint) { 1221 if ((index | count | text.length - index - count) < 0) { 1222 throw new IndexOutOfBoundsException(); 1223 } 1224 if (dir != DIRECTION_LTR && dir != DIRECTION_RTL) { 1225 throw new IllegalArgumentException("Unknown direction: " + dir); 1226 } 1227 1228 int modifiers = setupModifiers(paint); 1229 try { 1230 nDrawTextRun(mRenderer, text, index, count, contextIndex, contextCount, x, y, dir, 1231 paint.mNativePaint); 1232 } finally { 1233 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1234 } 1235 } 1236 1237 private static native void nDrawTextRun(int renderer, char[] text, int index, int count, 1238 int contextIndex, int contextCount, float x, float y, int dir, int nativePaint); 1239 1240 @Override 1241 public void drawTextRun(CharSequence text, int start, int end, int contextStart, int contextEnd, 1242 float x, float y, int dir, Paint paint) { 1243 if ((start | end | end - start | text.length() - end) < 0) { 1244 throw new IndexOutOfBoundsException(); 1245 } 1246 1247 int modifiers = setupModifiers(paint); 1248 try { 1249 int flags = dir == 0 ? 0 : 1; 1250 if (text instanceof String || text instanceof SpannedString || 1251 text instanceof SpannableString) { 1252 nDrawTextRun(mRenderer, text.toString(), start, end, contextStart, 1253 contextEnd, x, y, flags, paint.mNativePaint); 1254 } else if (text instanceof GraphicsOperations) { 1255 ((GraphicsOperations) text).drawTextRun(this, start, end, 1256 contextStart, contextEnd, x, y, flags, paint); 1257 } else { 1258 int contextLen = contextEnd - contextStart; 1259 int len = end - start; 1260 char[] buf = TemporaryBuffer.obtain(contextLen); 1261 TextUtils.getChars(text, contextStart, contextEnd, buf, 0); 1262 nDrawTextRun(mRenderer, buf, start - contextStart, len, 0, contextLen, 1263 x, y, flags, paint.mNativePaint); 1264 TemporaryBuffer.recycle(buf); 1265 } 1266 } finally { 1267 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1268 } 1269 } 1270 1271 private static native void nDrawTextRun(int renderer, String text, int start, int end, 1272 int contextStart, int contextEnd, float x, float y, int flags, int nativePaint); 1273 1274 @Override 1275 public void drawVertices(VertexMode mode, int vertexCount, float[] verts, int vertOffset, 1276 float[] texs, int texOffset, int[] colors, int colorOffset, short[] indices, 1277 int indexOffset, int indexCount, Paint paint) { 1278 // TODO: Implement 1279 } 1280 1281 private int setupModifiers(Bitmap b, Paint paint) { 1282 if (b.getConfig() != Bitmap.Config.ALPHA_8) { 1283 final ColorFilter filter = paint.getColorFilter(); 1284 if (filter != null) { 1285 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1286 return MODIFIER_COLOR_FILTER; 1287 } 1288 1289 return MODIFIER_NONE; 1290 } else { 1291 return setupModifiers(paint); 1292 } 1293 } 1294 1295 private int setupModifiers(Paint paint) { 1296 int modifiers = MODIFIER_NONE; 1297 1298 if (paint.hasShadow) { 1299 nSetupShadow(mRenderer, paint.shadowRadius, paint.shadowDx, paint.shadowDy, 1300 paint.shadowColor); 1301 modifiers |= MODIFIER_SHADOW; 1302 } 1303 1304 final Shader shader = paint.getShader(); 1305 if (shader != null) { 1306 nSetupShader(mRenderer, shader.native_shader); 1307 modifiers |= MODIFIER_SHADER; 1308 } 1309 1310 final ColorFilter filter = paint.getColorFilter(); 1311 if (filter != null) { 1312 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1313 modifiers |= MODIFIER_COLOR_FILTER; 1314 } 1315 1316 return modifiers; 1317 } 1318 1319 private int setupColorFilter(Paint paint) { 1320 final ColorFilter filter = paint.getColorFilter(); 1321 if (filter != null) { 1322 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1323 return MODIFIER_COLOR_FILTER; 1324 } 1325 return MODIFIER_NONE; 1326 } 1327 1328 private static native void nSetupShader(int renderer, int shader); 1329 private static native void nSetupColorFilter(int renderer, int colorFilter); 1330 private static native void nSetupShadow(int renderer, float radius, 1331 float dx, float dy, int color); 1332 1333 private static native void nResetModifiers(int renderer, int modifiers); 1334} 1335