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 * Release all resources associated with the underlying caches. This should 320 * only be called after a full flushCaches(). 321 * 322 * @hide 323 */ 324 public static void terminateCaches() { 325 nTerminateCaches(); 326 } 327 328 private static native void nTerminateCaches(); 329 330 /** 331 * @hide 332 */ 333 public static void initCaches() { 334 nInitCaches(); 335 } 336 337 private static native void nInitCaches(); 338 339 /////////////////////////////////////////////////////////////////////////// 340 // Display list 341 /////////////////////////////////////////////////////////////////////////// 342 343 int getDisplayList(int displayList) { 344 return nGetDisplayList(mRenderer, displayList); 345 } 346 347 private static native int nGetDisplayList(int renderer, int displayList); 348 349 static void destroyDisplayList(int displayList) { 350 nDestroyDisplayList(displayList); 351 } 352 353 private static native void nDestroyDisplayList(int displayList); 354 355 static int getDisplayListSize(int displayList) { 356 return nGetDisplayListSize(displayList); 357 } 358 359 private static native int nGetDisplayListSize(int displayList); 360 361 @Override 362 public boolean drawDisplayList(DisplayList displayList, int width, int height, Rect dirty) { 363 return nDrawDisplayList(mRenderer, 364 ((GLES20DisplayList) displayList).getNativeDisplayList(), width, height, dirty); 365 } 366 367 private static native boolean nDrawDisplayList(int renderer, int displayList, 368 int width, int height, Rect dirty); 369 370 @Override 371 void outputDisplayList(DisplayList displayList) { 372 nOutputDisplayList(mRenderer, ((GLES20DisplayList) displayList).getNativeDisplayList()); 373 } 374 375 private static native void nOutputDisplayList(int renderer, int displayList); 376 377 /////////////////////////////////////////////////////////////////////////// 378 // Hardware layer 379 /////////////////////////////////////////////////////////////////////////// 380 381 void drawHardwareLayer(HardwareLayer layer, float x, float y, Paint paint) { 382 final GLES20Layer glLayer = (GLES20Layer) layer; 383 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 384 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 385 nDrawLayer(mRenderer, glLayer.getLayer(), x, y, nativePaint); 386 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 387 } 388 389 private static native void nDrawLayer(int renderer, int layer, float x, float y, int paint); 390 391 void interrupt() { 392 nInterrupt(mRenderer); 393 } 394 395 void resume() { 396 nResume(mRenderer); 397 } 398 399 private static native void nInterrupt(int renderer); 400 private static native void nResume(int renderer); 401 402 /////////////////////////////////////////////////////////////////////////// 403 // Clipping 404 /////////////////////////////////////////////////////////////////////////// 405 406 @Override 407 public boolean clipPath(Path path) { 408 throw new UnsupportedOperationException(); 409 } 410 411 @Override 412 public boolean clipPath(Path path, Region.Op op) { 413 throw new UnsupportedOperationException(); 414 } 415 416 @Override 417 public boolean clipRect(float left, float top, float right, float bottom) { 418 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 419 } 420 421 private static native boolean nClipRect(int renderer, float left, float top, 422 float right, float bottom, int op); 423 424 @Override 425 public boolean clipRect(float left, float top, float right, float bottom, Region.Op op) { 426 return nClipRect(mRenderer, left, top, right, bottom, op.nativeInt); 427 } 428 429 @Override 430 public boolean clipRect(int left, int top, int right, int bottom) { 431 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 432 } 433 434 private static native boolean nClipRect(int renderer, int left, int top, int right, int bottom, 435 int op); 436 437 @Override 438 public boolean clipRect(Rect rect) { 439 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 440 Region.Op.INTERSECT.nativeInt); 441 } 442 443 @Override 444 public boolean clipRect(Rect rect, Region.Op op) { 445 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 446 } 447 448 @Override 449 public boolean clipRect(RectF rect) { 450 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 451 Region.Op.INTERSECT.nativeInt); 452 } 453 454 @Override 455 public boolean clipRect(RectF rect, Region.Op op) { 456 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 457 } 458 459 @Override 460 public boolean clipRegion(Region region) { 461 throw new UnsupportedOperationException(); 462 } 463 464 @Override 465 public boolean clipRegion(Region region, Region.Op op) { 466 throw new UnsupportedOperationException(); 467 } 468 469 @Override 470 public boolean getClipBounds(Rect bounds) { 471 return nGetClipBounds(mRenderer, bounds); 472 } 473 474 private static native boolean nGetClipBounds(int renderer, Rect bounds); 475 476 @Override 477 public boolean quickReject(float left, float top, float right, float bottom, EdgeType type) { 478 return nQuickReject(mRenderer, left, top, right, bottom, type.nativeInt); 479 } 480 481 private static native boolean nQuickReject(int renderer, float left, float top, 482 float right, float bottom, int edge); 483 484 @Override 485 public boolean quickReject(Path path, EdgeType type) { 486 throw new UnsupportedOperationException(); 487 } 488 489 @Override 490 public boolean quickReject(RectF rect, EdgeType type) { 491 return quickReject(rect.left, rect.top, rect.right, rect.bottom, type); 492 } 493 494 /////////////////////////////////////////////////////////////////////////// 495 // Transformations 496 /////////////////////////////////////////////////////////////////////////// 497 498 @Override 499 public void translate(float dx, float dy) { 500 if (dx != 0.0f || dy != 0.0f) nTranslate(mRenderer, dx, dy); 501 } 502 503 private static native void nTranslate(int renderer, float dx, float dy); 504 505 @Override 506 public void skew(float sx, float sy) { 507 nSkew(mRenderer, sx, sy); 508 } 509 510 private static native void nSkew(int renderer, float sx, float sy); 511 512 @Override 513 public void rotate(float degrees) { 514 nRotate(mRenderer, degrees); 515 } 516 517 private static native void nRotate(int renderer, float degrees); 518 519 @Override 520 public void scale(float sx, float sy) { 521 nScale(mRenderer, sx, sy); 522 } 523 524 private static native void nScale(int renderer, float sx, float sy); 525 526 @Override 527 public void setMatrix(Matrix matrix) { 528 nSetMatrix(mRenderer, matrix.native_instance); 529 } 530 531 private static native void nSetMatrix(int renderer, int matrix); 532 533 @Override 534 public void getMatrix(Matrix matrix) { 535 nGetMatrix(mRenderer, matrix.native_instance); 536 } 537 538 private static native void nGetMatrix(int renderer, int matrix); 539 540 @Override 541 public void concat(Matrix matrix) { 542 nConcatMatrix(mRenderer, matrix.native_instance); 543 } 544 545 private static native void nConcatMatrix(int renderer, int matrix); 546 547 /////////////////////////////////////////////////////////////////////////// 548 // State management 549 /////////////////////////////////////////////////////////////////////////// 550 551 @Override 552 public int save() { 553 return nSave(mRenderer, Canvas.CLIP_SAVE_FLAG | Canvas.MATRIX_SAVE_FLAG); 554 } 555 556 @Override 557 public int save(int saveFlags) { 558 return nSave(mRenderer, saveFlags); 559 } 560 561 private static native int nSave(int renderer, int flags); 562 563 @Override 564 public int saveLayer(RectF bounds, Paint paint, int saveFlags) { 565 if (bounds != null) { 566 return saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom, paint, saveFlags); 567 } 568 569 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 570 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 571 int count = nSaveLayer(mRenderer, nativePaint, saveFlags); 572 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 573 return count; 574 } 575 576 private static native int nSaveLayer(int renderer, int paint, int saveFlags); 577 578 @Override 579 public int saveLayer(float left, float top, float right, float bottom, Paint paint, 580 int saveFlags) { 581 if (left < right && top < bottom) { 582 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 583 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 584 int count = nSaveLayer(mRenderer, left, top, right, bottom, nativePaint, saveFlags); 585 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 586 return count; 587 } 588 return save(saveFlags); 589 } 590 591 private static native int nSaveLayer(int renderer, float left, float top, 592 float right, float bottom, int paint, int saveFlags); 593 594 @Override 595 public int saveLayerAlpha(RectF bounds, int alpha, int saveFlags) { 596 if (bounds != null) { 597 return saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom, 598 alpha, saveFlags); 599 } 600 return nSaveLayerAlpha(mRenderer, alpha, saveFlags); 601 } 602 603 private static native int nSaveLayerAlpha(int renderer, int alpha, int saveFlags); 604 605 @Override 606 public int saveLayerAlpha(float left, float top, float right, float bottom, int alpha, 607 int saveFlags) { 608 if (left < right && top < bottom) { 609 return nSaveLayerAlpha(mRenderer, left, top, right, bottom, alpha, saveFlags); 610 } 611 return save(saveFlags); 612 } 613 614 private static native int nSaveLayerAlpha(int renderer, float left, float top, float right, 615 float bottom, int alpha, int saveFlags); 616 617 @Override 618 public void restore() { 619 nRestore(mRenderer); 620 } 621 622 private static native void nRestore(int renderer); 623 624 @Override 625 public void restoreToCount(int saveCount) { 626 nRestoreToCount(mRenderer, saveCount); 627 } 628 629 private static native void nRestoreToCount(int renderer, int saveCount); 630 631 @Override 632 public int getSaveCount() { 633 return nGetSaveCount(mRenderer); 634 } 635 636 private static native int nGetSaveCount(int renderer); 637 638 /////////////////////////////////////////////////////////////////////////// 639 // Filtering 640 /////////////////////////////////////////////////////////////////////////// 641 642 @Override 643 public void setDrawFilter(DrawFilter filter) { 644 mFilter = filter; 645 } 646 647 @Override 648 public DrawFilter getDrawFilter() { 649 return mFilter; 650 } 651 652 /////////////////////////////////////////////////////////////////////////// 653 // Drawing 654 /////////////////////////////////////////////////////////////////////////// 655 656 @Override 657 public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, 658 Paint paint) { 659 int modifiers = setupModifiers(paint); 660 nDrawArc(mRenderer, oval.left, oval.top, oval.right, oval.bottom, startAngle, sweepAngle, 661 useCenter, paint.mNativePaint); 662 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 663 } 664 665 private static native void nDrawArc(int renderer, float left, float top, 666 float right, float bottom, float startAngle, float sweepAngle, 667 boolean useCenter, int paint); 668 669 @Override 670 public void drawARGB(int a, int r, int g, int b) { 671 drawColor((a & 0xFF) << 24 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 672 } 673 674 @Override 675 public void drawPatch(Bitmap bitmap, byte[] chunks, RectF dst, Paint paint) { 676 // Shaders are ignored when drawing patches 677 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 678 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 679 nDrawPatch(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, chunks, 680 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 681 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 682 } 683 684 private static native void nDrawPatch(int renderer, int bitmap, byte[] buffer, byte[] chunks, 685 float left, float top, float right, float bottom, int paint); 686 687 @Override 688 public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) { 689 // Shaders are ignored when drawing bitmaps 690 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 691 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 692 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, nativePaint); 693 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 694 } 695 696 private static native void nDrawBitmap( 697 int renderer, int bitmap, byte[] buffer, float left, float top, int paint); 698 699 @Override 700 public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) { 701 // Shaders are ignored when drawing bitmaps 702 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 703 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 704 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, 705 matrix.native_instance, nativePaint); 706 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 707 } 708 709 private static native void nDrawBitmap(int renderer, int bitmap, byte[] buff, 710 int matrix, int paint); 711 712 @Override 713 public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) { 714 // Shaders are ignored when drawing bitmaps 715 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 716 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 717 718 int left, top, right, bottom; 719 if (src == null) { 720 left = top = 0; 721 right = bitmap.getWidth(); 722 bottom = bitmap.getHeight(); 723 } else { 724 left = src.left; 725 right = src.right; 726 top = src.top; 727 bottom = src.bottom; 728 } 729 730 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, right, bottom, 731 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 732 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 733 } 734 735 @Override 736 public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) { 737 // Shaders are ignored when drawing bitmaps 738 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 739 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 740 741 float left, top, right, bottom; 742 if (src == null) { 743 left = top = 0; 744 right = bitmap.getWidth(); 745 bottom = bitmap.getHeight(); 746 } else { 747 left = src.left; 748 right = src.right; 749 top = src.top; 750 bottom = src.bottom; 751 } 752 753 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, right, bottom, 754 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 755 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 756 } 757 758 private static native void nDrawBitmap(int renderer, int bitmap, byte[] buffer, 759 float srcLeft, float srcTop, float srcRight, float srcBottom, 760 float left, float top, float right, float bottom, int paint); 761 762 @Override 763 public void drawBitmap(int[] colors, int offset, int stride, float x, float y, 764 int width, int height, boolean hasAlpha, Paint paint) { 765 // Shaders are ignored when drawing bitmaps 766 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 767 final Bitmap.Config config = hasAlpha ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; 768 final Bitmap b = Bitmap.createBitmap(colors, offset, stride, width, height, config); 769 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 770 nDrawBitmap(mRenderer, b.mNativeBitmap, b.mBuffer, x, y, nativePaint); 771 b.recycle(); 772 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 773 } 774 775 @Override 776 public void drawBitmap(int[] colors, int offset, int stride, int x, int y, 777 int width, int height, boolean hasAlpha, Paint paint) { 778 // Shaders are ignored when drawing bitmaps 779 drawBitmap(colors, offset, stride, (float) x, (float) y, width, height, hasAlpha, paint); 780 } 781 782 @Override 783 public void drawBitmapMesh(Bitmap bitmap, int meshWidth, int meshHeight, float[] verts, 784 int vertOffset, int[] colors, int colorOffset, Paint paint) { 785 if (meshWidth < 0 || meshHeight < 0 || vertOffset < 0 || colorOffset < 0) { 786 throw new ArrayIndexOutOfBoundsException(); 787 } 788 789 if (meshWidth == 0 || meshHeight == 0) { 790 return; 791 } 792 793 final int count = (meshWidth + 1) * (meshHeight + 1); 794 checkRange(verts.length, vertOffset, count * 2); 795 796 // TODO: Colors are ignored for now 797 colors = null; 798 colorOffset = 0; 799 800 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 801 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 802 nDrawBitmapMesh(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, meshWidth, meshHeight, 803 verts, vertOffset, colors, colorOffset, nativePaint); 804 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 805 } 806 807 private static native void nDrawBitmapMesh(int renderer, int bitmap, byte[] buffer, 808 int meshWidth, int meshHeight, float[] verts, int vertOffset, 809 int[] colors, int colorOffset, int paint); 810 811 @Override 812 public void drawCircle(float cx, float cy, float radius, Paint paint) { 813 int modifiers = setupModifiers(paint); 814 nDrawCircle(mRenderer, cx, cy, radius, paint.mNativePaint); 815 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 816 } 817 818 private static native void nDrawCircle(int renderer, float cx, float cy, 819 float radius, int paint); 820 821 @Override 822 public void drawColor(int color) { 823 drawColor(color, PorterDuff.Mode.SRC_OVER); 824 } 825 826 @Override 827 public void drawColor(int color, PorterDuff.Mode mode) { 828 nDrawColor(mRenderer, color, mode.nativeInt); 829 } 830 831 private static native void nDrawColor(int renderer, int color, int mode); 832 833 @Override 834 public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) { 835 mLine[0] = startX; 836 mLine[1] = startY; 837 mLine[2] = stopX; 838 mLine[3] = stopY; 839 drawLines(mLine, 0, 4, paint); 840 } 841 842 @Override 843 public void drawLines(float[] pts, int offset, int count, Paint paint) { 844 if ((offset | count) < 0 || offset + count > pts.length) { 845 throw new IllegalArgumentException("The lines array must contain 4 elements per line."); 846 } 847 int modifiers = setupModifiers(paint); 848 nDrawLines(mRenderer, pts, offset, count, paint.mNativePaint); 849 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 850 } 851 852 private static native void nDrawLines(int renderer, float[] points, 853 int offset, int count, int paint); 854 855 @Override 856 public void drawLines(float[] pts, Paint paint) { 857 drawLines(pts, 0, pts.length, paint); 858 } 859 860 @Override 861 public void drawOval(RectF oval, Paint paint) { 862 int modifiers = setupModifiers(paint); 863 nDrawOval(mRenderer, oval.left, oval.top, oval.right, oval.bottom, paint.mNativePaint); 864 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 865 } 866 867 private static native void nDrawOval(int renderer, float left, float top, 868 float right, float bottom, int paint); 869 870 @Override 871 public void drawPaint(Paint paint) { 872 final Rect r = mClipBounds; 873 nGetClipBounds(mRenderer, r); 874 drawRect(r.left, r.top, r.right, r.bottom, paint); 875 } 876 877 @Override 878 public void drawPath(Path path, Paint paint) { 879 int modifiers = setupModifiers(paint); 880 if (path.isSimplePath) { 881 if (path.rects != null) { 882 nDrawRects(mRenderer, path.rects.mNativeRegion, paint.mNativePaint); 883 } 884 } else { 885 nDrawPath(mRenderer, path.mNativePath, paint.mNativePaint); 886 } 887 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 888 } 889 890 private static native void nDrawPath(int renderer, int path, int paint); 891 private static native void nDrawRects(int renderer, int region, int paint); 892 893 @Override 894 public void drawPicture(Picture picture) { 895 throw new UnsupportedOperationException(); 896 } 897 898 @Override 899 public void drawPicture(Picture picture, Rect dst) { 900 throw new UnsupportedOperationException(); 901 } 902 903 @Override 904 public void drawPicture(Picture picture, RectF dst) { 905 throw new UnsupportedOperationException(); 906 } 907 908 @Override 909 public void drawPoint(float x, float y, Paint paint) { 910 mPoint[0] = x; 911 mPoint[1] = y; 912 drawPoints(mPoint, 0, 2, paint); 913 } 914 915 @Override 916 public void drawPoints(float[] pts, Paint paint) { 917 drawPoints(pts, 0, pts.length, paint); 918 } 919 920 @Override 921 public void drawPoints(float[] pts, int offset, int count, Paint paint) { 922 int modifiers = setupModifiers(paint); 923 nDrawPoints(mRenderer, pts, offset, count, paint.mNativePaint); 924 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 925 } 926 927 private static native void nDrawPoints(int renderer, float[] points, 928 int offset, int count, int paint); 929 930 @Override 931 public void drawPosText(char[] text, int index, int count, float[] pos, Paint paint) { 932 // TODO: Implement 933 } 934 935 @Override 936 public void drawPosText(String text, float[] pos, Paint paint) { 937 // TODO: Implement 938 } 939 940 @Override 941 public void drawRect(float left, float top, float right, float bottom, Paint paint) { 942 int modifiers = setupModifiers(paint); 943 nDrawRect(mRenderer, left, top, right, bottom, paint.mNativePaint); 944 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 945 } 946 947 private static native void nDrawRect(int renderer, float left, float top, 948 float right, float bottom, int paint); 949 950 @Override 951 public void drawRect(Rect r, Paint paint) { 952 drawRect(r.left, r.top, r.right, r.bottom, paint); 953 } 954 955 @Override 956 public void drawRect(RectF r, Paint paint) { 957 drawRect(r.left, r.top, r.right, r.bottom, paint); 958 } 959 960 @Override 961 public void drawRGB(int r, int g, int b) { 962 drawColor(0xFF000000 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 963 } 964 965 @Override 966 public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) { 967 int modifiers = setupModifiers(paint); 968 nDrawRoundRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 969 rx, ry, paint.mNativePaint); 970 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 971 } 972 973 private static native void nDrawRoundRect(int renderer, float left, float top, 974 float right, float bottom, float rx, float y, int paint); 975 976 @Override 977 public void drawText(char[] text, int index, int count, float x, float y, Paint paint) { 978 if ((index | count | (index + count) | (text.length - index - count)) < 0) { 979 throw new IndexOutOfBoundsException(); 980 } 981 982 int modifiers = setupModifiers(paint); 983 try { 984 nDrawText(mRenderer, text, index, count, x, y, paint.mBidiFlags, paint.mNativePaint); 985 } finally { 986 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 987 } 988 } 989 990 private static native void nDrawText(int renderer, char[] text, int index, int count, 991 float x, float y, int bidiFlags, int paint); 992 993 @Override 994 public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) { 995 int modifiers = setupModifiers(paint); 996 try { 997 if (text instanceof String || text instanceof SpannedString || 998 text instanceof SpannableString) { 999 nDrawText(mRenderer, text.toString(), start, end, x, y, paint.mBidiFlags, 1000 paint.mNativePaint); 1001 } else if (text instanceof GraphicsOperations) { 1002 ((GraphicsOperations) text).drawText(this, start, end, x, y, 1003 paint); 1004 } else { 1005 char[] buf = TemporaryBuffer.obtain(end - start); 1006 TextUtils.getChars(text, start, end, buf, 0); 1007 nDrawText(mRenderer, buf, 0, end - start, x, y, 1008 paint.mBidiFlags, paint.mNativePaint); 1009 TemporaryBuffer.recycle(buf); 1010 } 1011 } finally { 1012 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1013 } 1014 } 1015 1016 @Override 1017 public void drawText(String text, int start, int end, float x, float y, Paint paint) { 1018 if ((start | end | (end - start) | (text.length() - end)) < 0) { 1019 throw new IndexOutOfBoundsException(); 1020 } 1021 1022 int modifiers = setupModifiers(paint); 1023 try { 1024 nDrawText(mRenderer, text, start, end, x, y, paint.mBidiFlags, paint.mNativePaint); 1025 } finally { 1026 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1027 } 1028 } 1029 1030 private static native void nDrawText(int renderer, String text, int start, int end, 1031 float x, float y, int bidiFlags, int paint); 1032 1033 @Override 1034 public void drawText(String text, float x, float y, Paint paint) { 1035 int modifiers = setupModifiers(paint); 1036 try { 1037 nDrawText(mRenderer, text, 0, text.length(), x, y, paint.mBidiFlags, 1038 paint.mNativePaint); 1039 } finally { 1040 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1041 } 1042 } 1043 1044 @Override 1045 public void drawTextOnPath(char[] text, int index, int count, Path path, float hOffset, 1046 float vOffset, Paint paint) { 1047 // TODO: Implement 1048 } 1049 1050 @Override 1051 public void drawTextOnPath(String text, Path path, float hOffset, float vOffset, Paint paint) { 1052 // TODO: Implement 1053 } 1054 1055 @Override 1056 public void drawTextRun(char[] text, int index, int count, int contextIndex, int contextCount, 1057 float x, float y, int dir, Paint paint) { 1058 if ((index | count | text.length - index - count) < 0) { 1059 throw new IndexOutOfBoundsException(); 1060 } 1061 if (dir != DIRECTION_LTR && dir != DIRECTION_RTL) { 1062 throw new IllegalArgumentException("Unknown direction: " + dir); 1063 } 1064 1065 int modifiers = setupModifiers(paint); 1066 try { 1067 nDrawTextRun(mRenderer, text, index, count, contextIndex, contextCount, x, y, dir, 1068 paint.mNativePaint); 1069 } finally { 1070 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1071 } 1072 } 1073 1074 private static native void nDrawTextRun(int renderer, char[] text, int index, int count, 1075 int contextIndex, int contextCount, float x, float y, int dir, int nativePaint); 1076 1077 @Override 1078 public void drawTextRun(CharSequence text, int start, int end, int contextStart, int contextEnd, 1079 float x, float y, int dir, Paint paint) { 1080 if ((start | end | end - start | text.length() - end) < 0) { 1081 throw new IndexOutOfBoundsException(); 1082 } 1083 1084 int modifiers = setupModifiers(paint); 1085 try { 1086 int flags = dir == 0 ? 0 : 1; 1087 if (text instanceof String || text instanceof SpannedString || 1088 text instanceof SpannableString) { 1089 nDrawTextRun(mRenderer, text.toString(), start, end, contextStart, 1090 contextEnd, x, y, flags, paint.mNativePaint); 1091 } else if (text instanceof GraphicsOperations) { 1092 ((GraphicsOperations) text).drawTextRun(this, start, end, 1093 contextStart, contextEnd, x, y, flags, paint); 1094 } else { 1095 int contextLen = contextEnd - contextStart; 1096 int len = end - start; 1097 char[] buf = TemporaryBuffer.obtain(contextLen); 1098 TextUtils.getChars(text, contextStart, contextEnd, buf, 0); 1099 nDrawTextRun(mRenderer, buf, start - contextStart, len, 0, contextLen, 1100 x, y, flags, paint.mNativePaint); 1101 TemporaryBuffer.recycle(buf); 1102 } 1103 } finally { 1104 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1105 } 1106 } 1107 1108 private static native void nDrawTextRun(int renderer, String text, int start, int end, 1109 int contextStart, int contextEnd, float x, float y, int flags, int nativePaint); 1110 1111 @Override 1112 public void drawVertices(VertexMode mode, int vertexCount, float[] verts, int vertOffset, 1113 float[] texs, int texOffset, int[] colors, int colorOffset, short[] indices, 1114 int indexOffset, int indexCount, Paint paint) { 1115 // TODO: Implement 1116 } 1117 1118 private int setupModifiers(Bitmap b, Paint paint) { 1119 if (b.getConfig() == Bitmap.Config.ALPHA_8) { 1120 return setupModifiers(paint); 1121 } 1122 1123 final ColorFilter filter = paint.getColorFilter(); 1124 if (filter != null) { 1125 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1126 return MODIFIER_COLOR_FILTER; 1127 } 1128 1129 return MODIFIER_NONE; 1130 } 1131 1132 private int setupModifiers(Paint paint) { 1133 int modifiers = MODIFIER_NONE; 1134 1135 if (paint.hasShadow) { 1136 nSetupShadow(mRenderer, paint.shadowRadius, paint.shadowDx, paint.shadowDy, 1137 paint.shadowColor); 1138 modifiers |= MODIFIER_SHADOW; 1139 } 1140 1141 final Shader shader = paint.getShader(); 1142 if (shader != null) { 1143 nSetupShader(mRenderer, shader.native_shader); 1144 modifiers |= MODIFIER_SHADER; 1145 } 1146 1147 final ColorFilter filter = paint.getColorFilter(); 1148 if (filter != null) { 1149 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1150 modifiers |= MODIFIER_COLOR_FILTER; 1151 } 1152 1153 return modifiers; 1154 } 1155 1156 private int setupColorFilter(Paint paint) { 1157 final ColorFilter filter = paint.getColorFilter(); 1158 if (filter != null) { 1159 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1160 return MODIFIER_COLOR_FILTER; 1161 } 1162 return MODIFIER_NONE; 1163 } 1164 1165 private static native void nSetupShader(int renderer, int shader); 1166 private static native void nSetupColorFilter(int renderer, int colorFilter); 1167 private static native void nSetupShadow(int renderer, float radius, 1168 float dx, float dy, int color); 1169 1170 private static native void nResetModifiers(int renderer, int modifiers); 1171} 1172