GLES20Canvas.java revision f61970fc79e9c5cf340fa942597628242361864a
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 private CanvasFinalizer mFinalizer; 55 56 private int mWidth; 57 private int mHeight; 58 59 private final float[] mPoint = new float[2]; 60 private final float[] mLine = new float[4]; 61 62 private final Rect mClipBounds = new Rect(); 63 64 private DrawFilter mFilter; 65 66 /////////////////////////////////////////////////////////////////////////// 67 // JNI 68 /////////////////////////////////////////////////////////////////////////// 69 70 private static native boolean nIsAvailable(); 71 private static boolean sIsAvailable = nIsAvailable(); 72 73 static boolean isAvailable() { 74 return sIsAvailable; 75 } 76 77 /////////////////////////////////////////////////////////////////////////// 78 // Constructors 79 /////////////////////////////////////////////////////////////////////////// 80 81 /** 82 * Creates a canvas to render directly on screen. 83 */ 84 GLES20Canvas(boolean translucent) { 85 this(false, translucent); 86 } 87 88 /** 89 * Creates a canvas to render into an FBO. 90 */ 91 GLES20Canvas(int layer, boolean translucent) { 92 mOpaque = !translucent; 93 mRenderer = nCreateLayerRenderer(layer); 94 setupFinalizer(); 95 } 96 97 protected GLES20Canvas(boolean record, boolean translucent) { 98 mOpaque = !translucent; 99 100 setupRenderer(record); 101 } 102 103 protected void setupRenderer(boolean record) { 104 if (record) { 105 mRenderer = nGetDisplayListRenderer(mRenderer); 106 } else { 107 mRenderer = nCreateRenderer(); 108 } 109 110 setupFinalizer(); 111 } 112 113 private void setupFinalizer() { 114 if (mRenderer == 0) { 115 throw new IllegalStateException("Could not create GLES20Canvas renderer"); 116 } else { 117 mFinalizer = CanvasFinalizer.getFinalizer(mFinalizer, mRenderer); 118 } 119 } 120 121 private static native int nCreateRenderer(); 122 private static native int nCreateLayerRenderer(int layer); 123 private static native int nGetDisplayListRenderer(int renderer); 124 private static native void nDestroyRenderer(int renderer); 125 126 private static class CanvasFinalizer { 127 int mRenderer; 128 129 // Factory method returns new instance if old one is null, or old instance 130 // otherwise, destroying native renderer along the way as necessary 131 static CanvasFinalizer getFinalizer(CanvasFinalizer oldFinalizer, int renderer) { 132 if (oldFinalizer == null) { 133 return new CanvasFinalizer(renderer); 134 } 135 oldFinalizer.replaceNativeObject(renderer); 136 return oldFinalizer; 137 } 138 139 private CanvasFinalizer(int renderer) { 140 mRenderer = renderer; 141 } 142 143 private void replaceNativeObject(int newRenderer) { 144 if (mRenderer != 0 && newRenderer != mRenderer) { 145 nDestroyRenderer(mRenderer); 146 } 147 mRenderer = newRenderer; 148 } 149 150 @Override 151 protected void finalize() throws Throwable { 152 try { 153 replaceNativeObject(0); 154 } finally { 155 super.finalize(); 156 } 157 } 158 } 159 160 /////////////////////////////////////////////////////////////////////////// 161 // Hardware layers 162 /////////////////////////////////////////////////////////////////////////// 163 164 static native int nCreateTextureLayer(boolean opaque, int[] layerInfo); 165 static native int nCreateLayer(int width, int height, boolean isOpaque, int[] layerInfo); 166 static native void nResizeLayer(int layerId, int width, int height, int[] layerInfo); 167 static native void nUpdateTextureLayer(int layerId, int width, int height, boolean opaque, 168 SurfaceTexture surface); 169 static native void nDestroyLayer(int layerId); 170 static native void nDestroyLayerDeferred(int layerId); 171 static native boolean nCopyLayer(int layerId, int bitmap); 172 173 /////////////////////////////////////////////////////////////////////////// 174 // Canvas management 175 /////////////////////////////////////////////////////////////////////////// 176 177 @Override 178 public boolean isOpaque() { 179 return mOpaque; 180 } 181 182 @Override 183 public int getWidth() { 184 return mWidth; 185 } 186 187 @Override 188 public int getHeight() { 189 return mHeight; 190 } 191 192 @Override 193 public int getMaximumBitmapWidth() { 194 return nGetMaximumTextureWidth(); 195 } 196 197 @Override 198 public int getMaximumBitmapHeight() { 199 return nGetMaximumTextureHeight(); 200 } 201 202 private static native int nGetMaximumTextureWidth(); 203 private static native int nGetMaximumTextureHeight(); 204 205 /////////////////////////////////////////////////////////////////////////// 206 // Setup 207 /////////////////////////////////////////////////////////////////////////// 208 209 @Override 210 public void setViewport(int width, int height) { 211 mWidth = width; 212 mHeight = height; 213 214 nSetViewport(mRenderer, width, height); 215 } 216 217 private static native void nSetViewport(int renderer, int width, int height); 218 219 /** 220 * Preserves the back buffer of the current surface after a buffer swap. 221 * Calling this method sets the EGL_SWAP_BEHAVIOR attribute of the current 222 * surface to EGL_BUFFER_PRESERVED. Calling this method requires an EGL 223 * config that supports EGL_SWAP_BEHAVIOR_PRESERVED_BIT. 224 * 225 * @return True if the swap behavior was successfully changed, 226 * false otherwise. 227 * 228 * @hide 229 */ 230 public static boolean preserveBackBuffer() { 231 return nPreserveBackBuffer(); 232 } 233 234 private static native boolean nPreserveBackBuffer(); 235 236 /** 237 * Indicates whether the current surface preserves its back buffer 238 * after a buffer swap. 239 * 240 * @return True, if the surface's EGL_SWAP_BEHAVIOR is EGL_BUFFER_PRESERVED, 241 * false otherwise 242 * 243 * @hide 244 */ 245 public static boolean isBackBufferPreserved() { 246 return nIsBackBufferPreserved(); 247 } 248 249 private static native boolean nIsBackBufferPreserved(); 250 251 @Override 252 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 void onPostDraw() { 266 nFinish(mRenderer); 267 } 268 269 private static native void nFinish(int renderer); 270 271 @Override 272 public boolean callDrawGLFunction(int drawGLFunction) { 273 return nCallDrawGLFunction(mRenderer, drawGLFunction); 274 } 275 276 private static native boolean nCallDrawGLFunction(int renderer, int drawGLFunction); 277 278 /////////////////////////////////////////////////////////////////////////// 279 // Display list 280 /////////////////////////////////////////////////////////////////////////// 281 282 int getDisplayList() { 283 return nGetDisplayList(mRenderer); 284 } 285 286 private static native int nGetDisplayList(int renderer); 287 288 static void destroyDisplayList(int displayList) { 289 nDestroyDisplayList(displayList); 290 } 291 292 private static native void nDestroyDisplayList(int displayList); 293 294 @Override 295 public boolean drawDisplayList(DisplayList displayList, int width, int height, Rect dirty) { 296 return nDrawDisplayList(mRenderer, 297 ((GLES20DisplayList) displayList).mNativeDisplayList, width, height, dirty); 298 } 299 300 private static native boolean nDrawDisplayList(int renderer, int displayList, 301 int width, int height, Rect dirty); 302 303 @Override 304 void outputDisplayList(DisplayList displayList) { 305 nOutputDisplayList(mRenderer, ((GLES20DisplayList) displayList).mNativeDisplayList); 306 } 307 308 private static native void nOutputDisplayList(int renderer, int displayList); 309 310 /////////////////////////////////////////////////////////////////////////// 311 // Hardware layer 312 /////////////////////////////////////////////////////////////////////////// 313 314 void drawHardwareLayer(HardwareLayer layer, float x, float y, Paint paint) { 315 final GLES20Layer glLayer = (GLES20Layer) layer; 316 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 317 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 318 nDrawLayer(mRenderer, glLayer.getLayer(), x, y, nativePaint); 319 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 320 } 321 322 private static native void nDrawLayer(int renderer, int layer, float x, float y, int paint); 323 324 void interrupt() { 325 nInterrupt(mRenderer); 326 } 327 328 void resume() { 329 nResume(mRenderer); 330 } 331 332 private static native void nInterrupt(int renderer); 333 private static native void nResume(int renderer); 334 335 /////////////////////////////////////////////////////////////////////////// 336 // Clipping 337 /////////////////////////////////////////////////////////////////////////// 338 339 @Override 340 public boolean clipPath(Path path) { 341 throw new UnsupportedOperationException(); 342 } 343 344 @Override 345 public boolean clipPath(Path path, Region.Op op) { 346 throw new UnsupportedOperationException(); 347 } 348 349 @Override 350 public boolean clipRect(float left, float top, float right, float bottom) { 351 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 352 } 353 354 private static native boolean nClipRect(int renderer, float left, float top, 355 float right, float bottom, int op); 356 357 @Override 358 public boolean clipRect(float left, float top, float right, float bottom, Region.Op op) { 359 return nClipRect(mRenderer, left, top, right, bottom, op.nativeInt); 360 } 361 362 @Override 363 public boolean clipRect(int left, int top, int right, int bottom) { 364 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 365 } 366 367 private static native boolean nClipRect(int renderer, int left, int top, int right, int bottom, 368 int op); 369 370 @Override 371 public boolean clipRect(Rect rect) { 372 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 373 Region.Op.INTERSECT.nativeInt); 374 } 375 376 @Override 377 public boolean clipRect(Rect rect, Region.Op op) { 378 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 379 } 380 381 @Override 382 public boolean clipRect(RectF rect) { 383 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 384 Region.Op.INTERSECT.nativeInt); 385 } 386 387 @Override 388 public boolean clipRect(RectF rect, Region.Op op) { 389 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 390 } 391 392 @Override 393 public boolean clipRegion(Region region) { 394 throw new UnsupportedOperationException(); 395 } 396 397 @Override 398 public boolean clipRegion(Region region, Region.Op op) { 399 throw new UnsupportedOperationException(); 400 } 401 402 @Override 403 public boolean getClipBounds(Rect bounds) { 404 return nGetClipBounds(mRenderer, bounds); 405 } 406 407 private static native boolean nGetClipBounds(int renderer, Rect bounds); 408 409 @Override 410 public boolean quickReject(float left, float top, float right, float bottom, EdgeType type) { 411 return nQuickReject(mRenderer, left, top, right, bottom, type.nativeInt); 412 } 413 414 private static native boolean nQuickReject(int renderer, float left, float top, 415 float right, float bottom, int edge); 416 417 @Override 418 public boolean quickReject(Path path, EdgeType type) { 419 throw new UnsupportedOperationException(); 420 } 421 422 @Override 423 public boolean quickReject(RectF rect, EdgeType type) { 424 return quickReject(rect.left, rect.top, rect.right, rect.bottom, type); 425 } 426 427 /////////////////////////////////////////////////////////////////////////// 428 // Transformations 429 /////////////////////////////////////////////////////////////////////////// 430 431 @Override 432 public void translate(float dx, float dy) { 433 if (dx != 0.0f || dy != 0.0f) nTranslate(mRenderer, dx, dy); 434 } 435 436 private static native void nTranslate(int renderer, float dx, float dy); 437 438 @Override 439 public void skew(float sx, float sy) { 440 nSkew(mRenderer, sx, sy); 441 } 442 443 private static native void nSkew(int renderer, float sx, float sy); 444 445 @Override 446 public void rotate(float degrees) { 447 nRotate(mRenderer, degrees); 448 } 449 450 private static native void nRotate(int renderer, float degrees); 451 452 @Override 453 public void scale(float sx, float sy) { 454 nScale(mRenderer, sx, sy); 455 } 456 457 private static native void nScale(int renderer, float sx, float sy); 458 459 @Override 460 public void setMatrix(Matrix matrix) { 461 nSetMatrix(mRenderer, matrix.native_instance); 462 } 463 464 private static native void nSetMatrix(int renderer, int matrix); 465 466 @Override 467 public int getNativeMatrix() { 468 return nGetMatrix(mRenderer); 469 } 470 471 private static native int nGetMatrix(int renderer); 472 473 @Override 474 public void getMatrix(Matrix matrix) { 475 nGetMatrix(mRenderer, matrix.native_instance); 476 } 477 478 private static native void nGetMatrix(int renderer, int matrix); 479 480 @Override 481 public void concat(Matrix matrix) { 482 nConcatMatrix(mRenderer, matrix.native_instance); 483 } 484 485 private static native void nConcatMatrix(int renderer, int matrix); 486 487 /////////////////////////////////////////////////////////////////////////// 488 // State management 489 /////////////////////////////////////////////////////////////////////////// 490 491 @Override 492 public int save() { 493 return nSave(mRenderer, Canvas.CLIP_SAVE_FLAG | Canvas.MATRIX_SAVE_FLAG); 494 } 495 496 @Override 497 public int save(int saveFlags) { 498 return nSave(mRenderer, saveFlags); 499 } 500 501 private static native int nSave(int renderer, int flags); 502 503 @Override 504 public int saveLayer(RectF bounds, Paint paint, int saveFlags) { 505 return saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom, paint, saveFlags); 506 } 507 508 @Override 509 public int saveLayer(float left, float top, float right, float bottom, Paint paint, 510 int saveFlags) { 511 if (left < right && top < bottom) { 512 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 513 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 514 int count = nSaveLayer(mRenderer, left, top, right, bottom, nativePaint, saveFlags); 515 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 516 return count; 517 } 518 return save(saveFlags); 519 } 520 521 private static native int nSaveLayer(int renderer, float left, float top, 522 float right, float bottom, int paint, int saveFlags); 523 524 @Override 525 public int saveLayerAlpha(RectF bounds, int alpha, int saveFlags) { 526 return saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom, 527 alpha, saveFlags); 528 } 529 530 @Override 531 public int saveLayerAlpha(float left, float top, float right, float bottom, int alpha, 532 int saveFlags) { 533 if (left < right && top < bottom) { 534 return nSaveLayerAlpha(mRenderer, left, top, right, bottom, alpha, saveFlags); 535 } 536 return save(saveFlags); 537 } 538 539 private static native int nSaveLayerAlpha(int renderer, float left, float top, float right, 540 float bottom, int alpha, int saveFlags); 541 542 @Override 543 public void restore() { 544 nRestore(mRenderer); 545 } 546 547 private static native void nRestore(int renderer); 548 549 @Override 550 public void restoreToCount(int saveCount) { 551 nRestoreToCount(mRenderer, saveCount); 552 } 553 554 private static native void nRestoreToCount(int renderer, int saveCount); 555 556 @Override 557 public int getSaveCount() { 558 return nGetSaveCount(mRenderer); 559 } 560 561 private static native int nGetSaveCount(int renderer); 562 563 /////////////////////////////////////////////////////////////////////////// 564 // Filtering 565 /////////////////////////////////////////////////////////////////////////// 566 567 @Override 568 public void setDrawFilter(DrawFilter filter) { 569 mFilter = filter; 570 } 571 572 @Override 573 public DrawFilter getDrawFilter() { 574 return mFilter; 575 } 576 577 /////////////////////////////////////////////////////////////////////////// 578 // Drawing 579 /////////////////////////////////////////////////////////////////////////// 580 581 @Override 582 public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, 583 Paint paint) { 584 int modifiers = setupModifiers(paint); 585 nDrawArc(mRenderer, oval.left, oval.top, oval.right, oval.bottom, startAngle, sweepAngle, 586 useCenter, paint.mNativePaint); 587 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 588 } 589 590 private static native void nDrawArc(int renderer, float left, float top, 591 float right, float bottom, float startAngle, float sweepAngle, 592 boolean useCenter, int paint); 593 594 @Override 595 public void drawARGB(int a, int r, int g, int b) { 596 drawColor((a & 0xFF) << 24 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 597 } 598 599 @Override 600 public void drawPatch(Bitmap bitmap, byte[] chunks, RectF dst, Paint paint) { 601 // Shaders are ignored when drawing patches 602 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 603 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 604 nDrawPatch(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, chunks, 605 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 606 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 607 } 608 609 private static native void nDrawPatch(int renderer, int bitmap, byte[] buffer, byte[] chunks, 610 float left, float top, float right, float bottom, int paint); 611 612 @Override 613 public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) { 614 // Shaders are ignored when drawing bitmaps 615 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 616 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 617 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, nativePaint); 618 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 619 } 620 621 private static native void nDrawBitmap( 622 int renderer, int bitmap, byte[] buffer, float left, float top, int paint); 623 624 @Override 625 public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) { 626 // Shaders are ignored when drawing bitmaps 627 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 628 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 629 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, 630 matrix.native_instance, nativePaint); 631 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 632 } 633 634 private static native void nDrawBitmap(int renderer, int bitmap, byte[] buff, 635 int matrix, int paint); 636 637 @Override 638 public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) { 639 // Shaders are ignored when drawing bitmaps 640 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 641 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 642 643 int left, top, right, bottom; 644 if (src == null) { 645 left = top = 0; 646 right = bitmap.getWidth(); 647 bottom = bitmap.getHeight(); 648 } else { 649 left = src.left; 650 right = src.right; 651 top = src.top; 652 bottom = src.bottom; 653 } 654 655 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, right, bottom, 656 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 657 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 658 } 659 660 @Override 661 public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) { 662 // Shaders are ignored when drawing bitmaps 663 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 664 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 665 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, src.left, src.top, src.right, 666 src.bottom, dst.left, dst.top, dst.right, dst.bottom, nativePaint); 667 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 668 } 669 670 private static native void nDrawBitmap(int renderer, int bitmap, byte[] buffer, 671 float srcLeft, float srcTop, float srcRight, float srcBottom, 672 float left, float top, float right, float bottom, int paint); 673 674 @Override 675 public void drawBitmap(int[] colors, int offset, int stride, float x, float y, 676 int width, int height, boolean hasAlpha, Paint paint) { 677 // Shaders are ignored when drawing bitmaps 678 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 679 final Bitmap.Config config = hasAlpha ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; 680 final Bitmap b = Bitmap.createBitmap(colors, offset, stride, width, height, config); 681 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 682 nDrawBitmap(mRenderer, b.mNativeBitmap, b.mBuffer, x, y, nativePaint); 683 b.recycle(); 684 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 685 } 686 687 @Override 688 public void drawBitmap(int[] colors, int offset, int stride, int x, int y, 689 int width, int height, boolean hasAlpha, Paint paint) { 690 // Shaders are ignored when drawing bitmaps 691 drawBitmap(colors, offset, stride, (float) x, (float) y, width, height, hasAlpha, paint); 692 } 693 694 @Override 695 public void drawBitmapMesh(Bitmap bitmap, int meshWidth, int meshHeight, float[] verts, 696 int vertOffset, int[] colors, int colorOffset, Paint paint) { 697 if (meshWidth < 0 || meshHeight < 0 || vertOffset < 0 || colorOffset < 0) { 698 throw new ArrayIndexOutOfBoundsException(); 699 } 700 701 if (meshWidth == 0 || meshHeight == 0) { 702 return; 703 } 704 705 final int count = (meshWidth + 1) * (meshHeight + 1); 706 checkRange(verts.length, vertOffset, count * 2); 707 708 // TODO: Colors are ignored for now 709 colors = null; 710 colorOffset = 0; 711 712 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 713 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 714 nDrawBitmapMesh(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, meshWidth, meshHeight, 715 verts, vertOffset, colors, colorOffset, nativePaint); 716 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 717 } 718 719 private static native void nDrawBitmapMesh(int renderer, int bitmap, byte[] buffer, 720 int meshWidth, int meshHeight, float[] verts, int vertOffset, 721 int[] colors, int colorOffset, int paint); 722 723 @Override 724 public void drawCircle(float cx, float cy, float radius, Paint paint) { 725 int modifiers = setupModifiers(paint); 726 nDrawCircle(mRenderer, cx, cy, radius, paint.mNativePaint); 727 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 728 } 729 730 private static native void nDrawCircle(int renderer, float cx, float cy, 731 float radius, int paint); 732 733 @Override 734 public void drawColor(int color) { 735 drawColor(color, PorterDuff.Mode.SRC_OVER); 736 } 737 738 @Override 739 public void drawColor(int color, PorterDuff.Mode mode) { 740 nDrawColor(mRenderer, color, mode.nativeInt); 741 } 742 743 private static native void nDrawColor(int renderer, int color, int mode); 744 745 @Override 746 public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) { 747 mLine[0] = startX; 748 mLine[1] = startY; 749 mLine[2] = stopX; 750 mLine[3] = stopY; 751 drawLines(mLine, 0, 4, paint); 752 } 753 754 @Override 755 public void drawLines(float[] pts, int offset, int count, Paint paint) { 756 if ((offset | count) < 0 || offset + count > pts.length) { 757 throw new IllegalArgumentException("The lines array must contain 4 elements per line."); 758 } 759 int modifiers = setupModifiers(paint); 760 nDrawLines(mRenderer, pts, offset, count, paint.mNativePaint); 761 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 762 } 763 764 private static native void nDrawLines(int renderer, float[] points, 765 int offset, int count, int paint); 766 767 @Override 768 public void drawLines(float[] pts, Paint paint) { 769 drawLines(pts, 0, pts.length, paint); 770 } 771 772 @Override 773 public void drawOval(RectF oval, Paint paint) { 774 int modifiers = setupModifiers(paint); 775 nDrawOval(mRenderer, oval.left, oval.top, oval.right, oval.bottom, paint.mNativePaint); 776 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 777 } 778 779 private static native void nDrawOval(int renderer, float left, float top, 780 float right, float bottom, int paint); 781 782 @Override 783 public void drawPaint(Paint paint) { 784 final Rect r = mClipBounds; 785 nGetClipBounds(mRenderer, r); 786 drawRect(r.left, r.top, r.right, r.bottom, paint); 787 } 788 789 @Override 790 public void drawPath(Path path, Paint paint) { 791 int modifiers = setupModifiers(paint); 792 if (path.isSimplePath) { 793 if (path.rects != null) { 794 nDrawRects(mRenderer, path.rects.mNativeRegion, paint.mNativePaint); 795 } 796 } else { 797 nDrawPath(mRenderer, path.mNativePath, paint.mNativePaint); 798 } 799 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 800 } 801 802 private static native void nDrawPath(int renderer, int path, int paint); 803 private static native void nDrawRects(int renderer, int region, int paint); 804 805 @Override 806 public void drawPicture(Picture picture) { 807 throw new UnsupportedOperationException(); 808 } 809 810 @Override 811 public void drawPicture(Picture picture, Rect dst) { 812 throw new UnsupportedOperationException(); 813 } 814 815 @Override 816 public void drawPicture(Picture picture, RectF dst) { 817 throw new UnsupportedOperationException(); 818 } 819 820 @Override 821 public void drawPoint(float x, float y, Paint paint) { 822 mPoint[0] = x; 823 mPoint[1] = y; 824 drawPoints(mPoint, 0, 2, paint); 825 } 826 827 @Override 828 public void drawPoints(float[] pts, Paint paint) { 829 drawPoints(pts, 0, pts.length, paint); 830 } 831 832 @Override 833 public void drawPoints(float[] pts, int offset, int count, Paint paint) { 834 int modifiers = setupModifiers(paint); 835 nDrawPoints(mRenderer, pts, offset, count, paint.mNativePaint); 836 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 837 } 838 839 private static native void nDrawPoints(int renderer, float[] points, 840 int offset, int count, int paint); 841 842 @Override 843 public void drawPosText(char[] text, int index, int count, float[] pos, Paint paint) { 844 // TODO: Implement 845 } 846 847 @Override 848 public void drawPosText(String text, float[] pos, Paint paint) { 849 // TODO: Implement 850 } 851 852 @Override 853 public void drawRect(float left, float top, float right, float bottom, Paint paint) { 854 int modifiers = setupModifiers(paint); 855 nDrawRect(mRenderer, left, top, right, bottom, paint.mNativePaint); 856 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 857 } 858 859 private static native void nDrawRect(int renderer, float left, float top, 860 float right, float bottom, int paint); 861 862 @Override 863 public void drawRect(Rect r, Paint paint) { 864 drawRect(r.left, r.top, r.right, r.bottom, paint); 865 } 866 867 @Override 868 public void drawRect(RectF r, Paint paint) { 869 drawRect(r.left, r.top, r.right, r.bottom, paint); 870 } 871 872 @Override 873 public void drawRGB(int r, int g, int b) { 874 drawColor(0xFF000000 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 875 } 876 877 @Override 878 public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) { 879 int modifiers = setupModifiers(paint); 880 nDrawRoundRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 881 rx, ry, paint.mNativePaint); 882 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 883 } 884 885 private static native void nDrawRoundRect(int renderer, float left, float top, 886 float right, float bottom, float rx, float y, int paint); 887 888 @Override 889 public void drawText(char[] text, int index, int count, float x, float y, Paint paint) { 890 if ((index | count | (index + count) | (text.length - index - count)) < 0) { 891 throw new IndexOutOfBoundsException(); 892 } 893 894 int modifiers = setupModifiers(paint); 895 try { 896 nDrawText(mRenderer, text, index, count, x, y, paint.mBidiFlags, paint.mNativePaint); 897 } finally { 898 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 899 } 900 } 901 902 private static native void nDrawText(int renderer, char[] text, int index, int count, 903 float x, float y, int bidiFlags, int paint); 904 905 @Override 906 public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) { 907 int modifiers = setupModifiers(paint); 908 try { 909 if (text instanceof String || text instanceof SpannedString || 910 text instanceof SpannableString) { 911 nDrawText(mRenderer, text.toString(), start, end, x, y, paint.mBidiFlags, 912 paint.mNativePaint); 913 } else if (text instanceof GraphicsOperations) { 914 ((GraphicsOperations) text).drawText(this, start, end, x, y, 915 paint); 916 } else { 917 char[] buf = TemporaryBuffer.obtain(end - start); 918 TextUtils.getChars(text, start, end, buf, 0); 919 nDrawText(mRenderer, buf, 0, end - start, x, y, 920 paint.mBidiFlags, paint.mNativePaint); 921 TemporaryBuffer.recycle(buf); 922 } 923 } finally { 924 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 925 } 926 } 927 928 @Override 929 public void drawText(String text, int start, int end, float x, float y, Paint paint) { 930 if ((start | end | (end - start) | (text.length() - end)) < 0) { 931 throw new IndexOutOfBoundsException(); 932 } 933 934 int modifiers = setupModifiers(paint); 935 try { 936 nDrawText(mRenderer, text, start, end, x, y, paint.mBidiFlags, paint.mNativePaint); 937 } finally { 938 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 939 } 940 } 941 942 private static native void nDrawText(int renderer, String text, int start, int end, 943 float x, float y, int bidiFlags, int paint); 944 945 @Override 946 public void drawText(String text, float x, float y, Paint paint) { 947 int modifiers = setupModifiers(paint); 948 try { 949 nDrawText(mRenderer, text, 0, text.length(), x, y, paint.mBidiFlags, 950 paint.mNativePaint); 951 } finally { 952 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 953 } 954 } 955 956 @Override 957 public void drawTextOnPath(char[] text, int index, int count, Path path, float hOffset, 958 float vOffset, Paint paint) { 959 // TODO: Implement 960 } 961 962 @Override 963 public void drawTextOnPath(String text, Path path, float hOffset, float vOffset, Paint paint) { 964 // TODO: Implement 965 } 966 967 @Override 968 public void drawTextRun(char[] text, int index, int count, int contextIndex, int contextCount, 969 float x, float y, int dir, Paint paint) { 970 if ((index | count | text.length - index - count) < 0) { 971 throw new IndexOutOfBoundsException(); 972 } 973 if (dir != DIRECTION_LTR && dir != DIRECTION_RTL) { 974 throw new IllegalArgumentException("Unknown direction: " + dir); 975 } 976 977 int modifiers = setupModifiers(paint); 978 try { 979 nDrawTextRun(mRenderer, text, index, count, contextIndex, contextCount, x, y, dir, 980 paint.mNativePaint); 981 } finally { 982 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 983 } 984 } 985 986 private static native void nDrawTextRun(int renderer, char[] text, int index, int count, 987 int contextIndex, int contextCount, float x, float y, int dir, int nativePaint); 988 989 @Override 990 public void drawTextRun(CharSequence text, int start, int end, int contextStart, int contextEnd, 991 float x, float y, int dir, Paint paint) { 992 if ((start | end | end - start | text.length() - end) < 0) { 993 throw new IndexOutOfBoundsException(); 994 } 995 996 int modifiers = setupModifiers(paint); 997 try { 998 int flags = dir == 0 ? 0 : 1; 999 if (text instanceof String || text instanceof SpannedString || 1000 text instanceof SpannableString) { 1001 nDrawTextRun(mRenderer, text.toString(), start, end, contextStart, 1002 contextEnd, x, y, flags, paint.mNativePaint); 1003 } else if (text instanceof GraphicsOperations) { 1004 ((GraphicsOperations) text).drawTextRun(this, start, end, 1005 contextStart, contextEnd, x, y, flags, paint); 1006 } else { 1007 int contextLen = contextEnd - contextStart; 1008 int len = end - start; 1009 char[] buf = TemporaryBuffer.obtain(contextLen); 1010 TextUtils.getChars(text, contextStart, contextEnd, buf, 0); 1011 nDrawTextRun(mRenderer, buf, start - contextStart, len, 0, contextLen, 1012 x, y, flags, paint.mNativePaint); 1013 TemporaryBuffer.recycle(buf); 1014 } 1015 } finally { 1016 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1017 } 1018 } 1019 1020 private static native void nDrawTextRun(int renderer, String text, int start, int end, 1021 int contextStart, int contextEnd, float x, float y, int flags, int nativePaint); 1022 1023 @Override 1024 public void drawVertices(VertexMode mode, int vertexCount, float[] verts, int vertOffset, 1025 float[] texs, int texOffset, int[] colors, int colorOffset, short[] indices, 1026 int indexOffset, int indexCount, Paint paint) { 1027 // TODO: Implement 1028 } 1029 1030 private int setupModifiers(Bitmap b, Paint paint) { 1031 if (b.getConfig() == Bitmap.Config.ALPHA_8) { 1032 return setupModifiers(paint); 1033 } 1034 1035 final ColorFilter filter = paint.getColorFilter(); 1036 if (filter != null) { 1037 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1038 return MODIFIER_COLOR_FILTER; 1039 } 1040 1041 return MODIFIER_NONE; 1042 } 1043 1044 private int setupModifiers(Paint paint) { 1045 int modifiers = MODIFIER_NONE; 1046 1047 if (paint.hasShadow) { 1048 nSetupShadow(mRenderer, paint.shadowRadius, paint.shadowDx, paint.shadowDy, 1049 paint.shadowColor); 1050 modifiers |= MODIFIER_SHADOW; 1051 } 1052 1053 final Shader shader = paint.getShader(); 1054 if (shader != null) { 1055 nSetupShader(mRenderer, shader.native_shader); 1056 modifiers |= MODIFIER_SHADER; 1057 } 1058 1059 final ColorFilter filter = paint.getColorFilter(); 1060 if (filter != null) { 1061 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1062 modifiers |= MODIFIER_COLOR_FILTER; 1063 } 1064 1065 return modifiers; 1066 } 1067 1068 private int setupColorFilter(Paint paint) { 1069 final ColorFilter filter = paint.getColorFilter(); 1070 if (filter != null) { 1071 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1072 return MODIFIER_COLOR_FILTER; 1073 } 1074 return MODIFIER_NONE; 1075 } 1076 1077 private static native void nSetupShader(int renderer, int shader); 1078 private static native void nSetupColorFilter(int renderer, int colorFilter); 1079 private static native void nSetupShadow(int renderer, float radius, 1080 float dx, float dy, int color); 1081 1082 private static native void nResetModifiers(int renderer, int modifiers); 1083} 1084