GLES20Canvas.java revision daf98e941e140e8739458126640183b9f296a2ab
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.TemporaryBuffer; 33import android.text.GraphicsOperations; 34import android.text.SpannableString; 35import android.text.SpannedString; 36import android.text.TextUtils; 37 38/** 39 * An implementation of Canvas on top of OpenGL ES 2.0. 40 */ 41class GLES20Canvas extends HardwareCanvas { 42 private final boolean mOpaque; 43 private int mRenderer; 44 45 // The native renderer will be destroyed when this object dies. 46 // DO NOT overwrite this reference once it is set. 47 private CanvasFinalizer mFinalizer; 48 49 private int mWidth; 50 private int mHeight; 51 52 private final float[] mPoint = new float[2]; 53 private final float[] mLine = new float[4]; 54 55 private final Rect mClipBounds = new Rect(); 56 57 private DrawFilter mFilter; 58 59 private boolean mContextLocked; 60 61 /////////////////////////////////////////////////////////////////////////// 62 // JNI 63 /////////////////////////////////////////////////////////////////////////// 64 65 private static native boolean nIsAvailable(); 66 private static boolean sIsAvailable = nIsAvailable(); 67 68 static boolean isAvailable() { 69 return sIsAvailable; 70 } 71 72 /////////////////////////////////////////////////////////////////////////// 73 // Constructors 74 /////////////////////////////////////////////////////////////////////////// 75 76 /** 77 * Creates a canvas to render directly on screen. 78 */ 79 GLES20Canvas(boolean translucent) { 80 this(false, translucent); 81 } 82 83 /** 84 * Creates a canvas to render into an FBO. 85 */ 86 GLES20Canvas(int layer, boolean translucent) { 87 mOpaque = !translucent; 88 mRenderer = nCreateLayerRenderer(layer); 89 setupFinalizer(); 90 } 91 92 protected GLES20Canvas(boolean record, boolean translucent) { 93 mOpaque = !translucent; 94 95 setupRenderer(record); 96 } 97 98 protected void setupRenderer(boolean record) { 99 if (record) { 100 mRenderer = nGetDisplayListRenderer(mRenderer); 101 } else { 102 mRenderer = nCreateRenderer(); 103 } 104 105 setupFinalizer(); 106 } 107 108 private void setupFinalizer() { 109 if (mRenderer == 0) { 110 throw new IllegalStateException("Could not create GLES20Canvas renderer"); 111 } else { 112 mFinalizer = CanvasFinalizer.getFinalizer(mFinalizer, mRenderer); 113 } 114 } 115 116 private static native int nCreateRenderer(); 117 private static native int nCreateLayerRenderer(int layer); 118 private static native int nGetDisplayListRenderer(int renderer); 119 private static native void nDestroyRenderer(int renderer); 120 121 private static class CanvasFinalizer { 122 int mRenderer; 123 124 // Factory method returns new instance if old one is null, or old instance 125 // otherwise, destroying native renderer along the way as necessary 126 static CanvasFinalizer getFinalizer(CanvasFinalizer oldFinalizer, int renderer) { 127 if (oldFinalizer == null) { 128 return new CanvasFinalizer(renderer); 129 } 130 oldFinalizer.replaceNativeObject(renderer); 131 return oldFinalizer; 132 } 133 134 private CanvasFinalizer(int renderer) { 135 mRenderer = renderer; 136 } 137 138 private void replaceNativeObject(int newRenderer) { 139 if (mRenderer != 0 && newRenderer != mRenderer) { 140 nDestroyRenderer(mRenderer); 141 } 142 mRenderer = newRenderer; 143 } 144 145 @Override 146 protected void finalize() throws Throwable { 147 try { 148 replaceNativeObject(0); 149 } finally { 150 super.finalize(); 151 } 152 } 153 } 154 155 /////////////////////////////////////////////////////////////////////////// 156 // Hardware layers 157 /////////////////////////////////////////////////////////////////////////// 158 159 static native int nCreateLayer(int width, int height, boolean isOpaque, int[] layerInfo); 160 static native void nResizeLayer(int layerId, int width, int height, int[] layerInfo); 161 static native void nDestroyLayer(int layerId); 162 static native void nDestroyLayerDeferred(int layerId); 163 164 /////////////////////////////////////////////////////////////////////////// 165 // Canvas management 166 /////////////////////////////////////////////////////////////////////////// 167 168 @Override 169 public boolean isOpaque() { 170 return mOpaque; 171 } 172 173 @Override 174 public int getWidth() { 175 return mWidth; 176 } 177 178 @Override 179 public int getHeight() { 180 return mHeight; 181 } 182 183 /////////////////////////////////////////////////////////////////////////// 184 // Setup 185 /////////////////////////////////////////////////////////////////////////// 186 187 @Override 188 public void setViewport(int width, int height) { 189 mWidth = width; 190 mHeight = height; 191 192 nSetViewport(mRenderer, width, height); 193 } 194 195 private native void nSetViewport(int renderer, int width, int height); 196 197 @Override 198 void onPreDraw() { 199 nPrepare(mRenderer, mOpaque); 200 } 201 202 private native void nPrepare(int renderer, boolean opaque); 203 204 @Override 205 void onPostDraw() { 206 nFinish(mRenderer); 207 } 208 209 private native void nFinish(int renderer); 210 211 @Override 212 public boolean acquireContext() { 213 if (!mContextLocked) { 214 nAcquireContext(mRenderer); 215 mContextLocked = true; 216 } 217 return mContextLocked; 218 } 219 220 private native void nAcquireContext(int renderer); 221 222 @Override 223 public boolean callDrawGLFunction(int drawGLFunction) { 224 return nCallDrawGLFunction(mRenderer, drawGLFunction); 225 } 226 227 private native boolean nCallDrawGLFunction(int renderer, int drawGLFunction); 228 229 @Override 230 public void releaseContext() { 231 if (mContextLocked) { 232 nReleaseContext(mRenderer); 233 mContextLocked = false; 234 } 235 } 236 237 private native void nReleaseContext(int renderer); 238 239 /////////////////////////////////////////////////////////////////////////// 240 // Display list 241 /////////////////////////////////////////////////////////////////////////// 242 243 int getDisplayList() { 244 return nGetDisplayList(mRenderer); 245 } 246 247 private native int nGetDisplayList(int renderer); 248 249 static void destroyDisplayList(int displayList) { 250 nDestroyDisplayList(displayList); 251 } 252 253 private static native void nDestroyDisplayList(int displayList); 254 255 @Override 256 public boolean drawDisplayList(DisplayList displayList) { 257 return nDrawDisplayList(mRenderer, ((GLES20DisplayList) displayList).mNativeDisplayList); 258 } 259 260 private native boolean nDrawDisplayList(int renderer, int displayList); 261 262 /////////////////////////////////////////////////////////////////////////// 263 // Hardware layer 264 /////////////////////////////////////////////////////////////////////////// 265 266 void drawHardwareLayer(HardwareLayer layer, float x, float y, Paint paint) { 267 final GLES20Layer glLayer = (GLES20Layer) layer; 268 boolean hasColorFilter = paint != null && setupColorFilter(paint); 269 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 270 nDrawLayer(mRenderer, glLayer.getLayer(), x, y, nativePaint); 271 if (hasColorFilter) nResetModifiers(mRenderer); 272 } 273 274 private native void nDrawLayer(int renderer, int layer, float x, float y, int paint); 275 276 void interrupt() { 277 nInterrupt(mRenderer); 278 } 279 280 void resume() { 281 nResume(mRenderer); 282 } 283 284 private native void nInterrupt(int renderer); 285 private native void nResume(int renderer); 286 287 /////////////////////////////////////////////////////////////////////////// 288 // Clipping 289 /////////////////////////////////////////////////////////////////////////// 290 291 @Override 292 public boolean clipPath(Path path) { 293 throw new UnsupportedOperationException(); 294 } 295 296 @Override 297 public boolean clipPath(Path path, Region.Op op) { 298 throw new UnsupportedOperationException(); 299 } 300 301 @Override 302 public boolean clipRect(float left, float top, float right, float bottom) { 303 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 304 } 305 306 private native boolean nClipRect(int renderer, float left, float top, 307 float right, float bottom, int op); 308 309 @Override 310 public boolean clipRect(float left, float top, float right, float bottom, Region.Op op) { 311 return nClipRect(mRenderer, left, top, right, bottom, op.nativeInt); 312 } 313 314 @Override 315 public boolean clipRect(int left, int top, int right, int bottom) { 316 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 317 } 318 319 private native boolean nClipRect(int renderer, int left, int top, int right, int bottom, int op); 320 321 @Override 322 public boolean clipRect(Rect rect) { 323 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 324 Region.Op.INTERSECT.nativeInt); 325 } 326 327 @Override 328 public boolean clipRect(Rect rect, Region.Op op) { 329 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 330 } 331 332 @Override 333 public boolean clipRect(RectF rect) { 334 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 335 Region.Op.INTERSECT.nativeInt); 336 } 337 338 @Override 339 public boolean clipRect(RectF rect, Region.Op op) { 340 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 341 } 342 343 @Override 344 public boolean clipRegion(Region region) { 345 throw new UnsupportedOperationException(); 346 } 347 348 @Override 349 public boolean clipRegion(Region region, Region.Op op) { 350 throw new UnsupportedOperationException(); 351 } 352 353 @Override 354 public boolean getClipBounds(Rect bounds) { 355 return nGetClipBounds(mRenderer, bounds); 356 } 357 358 private native boolean nGetClipBounds(int renderer, Rect bounds); 359 360 @Override 361 public boolean quickReject(float left, float top, float right, float bottom, EdgeType type) { 362 return nQuickReject(mRenderer, left, top, right, bottom, type.nativeInt); 363 } 364 365 private native boolean nQuickReject(int renderer, float left, float top, 366 float right, float bottom, int edge); 367 368 @Override 369 public boolean quickReject(Path path, EdgeType type) { 370 throw new UnsupportedOperationException(); 371 } 372 373 @Override 374 public boolean quickReject(RectF rect, EdgeType type) { 375 return quickReject(rect.left, rect.top, rect.right, rect.bottom, type); 376 } 377 378 /////////////////////////////////////////////////////////////////////////// 379 // Transformations 380 /////////////////////////////////////////////////////////////////////////// 381 382 @Override 383 public void translate(float dx, float dy) { 384 if (dx != 0.0f || dy != 0.0f) nTranslate(mRenderer, dx, dy); 385 } 386 387 private native void nTranslate(int renderer, float dx, float dy); 388 389 @Override 390 public void skew(float sx, float sy) { 391 nSkew(mRenderer, sx, sy); 392 } 393 394 private native void nSkew(int renderer, float sx, float sy); 395 396 @Override 397 public void rotate(float degrees) { 398 nRotate(mRenderer, degrees); 399 } 400 401 private native void nRotate(int renderer, float degrees); 402 403 @Override 404 public void scale(float sx, float sy) { 405 nScale(mRenderer, sx, sy); 406 } 407 408 private native void nScale(int renderer, float sx, float sy); 409 410 @Override 411 public void setMatrix(Matrix matrix) { 412 nSetMatrix(mRenderer, matrix.native_instance); 413 } 414 415 private native void nSetMatrix(int renderer, int matrix); 416 417 @Override 418 public int getNativeMatrix() { 419 return nGetMatrix(mRenderer); 420 } 421 422 private native int nGetMatrix(int renderer); 423 424 @Override 425 public void getMatrix(Matrix matrix) { 426 nGetMatrix(mRenderer, matrix.native_instance); 427 } 428 429 private native void nGetMatrix(int renderer, int matrix); 430 431 @Override 432 public void concat(Matrix matrix) { 433 nConcatMatrix(mRenderer, matrix.native_instance); 434 } 435 436 private native void nConcatMatrix(int renderer, int matrix); 437 438 /////////////////////////////////////////////////////////////////////////// 439 // State management 440 /////////////////////////////////////////////////////////////////////////// 441 442 @Override 443 public int save() { 444 return nSave(mRenderer, Canvas.CLIP_SAVE_FLAG | Canvas.MATRIX_SAVE_FLAG); 445 } 446 447 @Override 448 public int save(int saveFlags) { 449 return nSave(mRenderer, saveFlags); 450 } 451 452 private native int nSave(int renderer, int flags); 453 454 @Override 455 public int saveLayer(RectF bounds, Paint paint, int saveFlags) { 456 return saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom, paint, saveFlags); 457 } 458 459 @Override 460 public int saveLayer(float left, float top, float right, float bottom, Paint paint, 461 int saveFlags) { 462 if (left < right && top < bottom) { 463 boolean hasColorFilter = paint != null && setupColorFilter(paint); 464 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 465 int count = nSaveLayer(mRenderer, left, top, right, bottom, nativePaint, saveFlags); 466 if (hasColorFilter) nResetModifiers(mRenderer); 467 return count; 468 } 469 return save(saveFlags); 470 } 471 472 private native int nSaveLayer(int renderer, float left, float top, float right, float bottom, 473 int paint, int saveFlags); 474 475 @Override 476 public int saveLayerAlpha(RectF bounds, int alpha, int saveFlags) { 477 return saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom, 478 alpha, saveFlags); 479 } 480 481 @Override 482 public int saveLayerAlpha(float left, float top, float right, float bottom, int alpha, 483 int saveFlags) { 484 if (left < right && top < bottom) { 485 return nSaveLayerAlpha(mRenderer, left, top, right, bottom, alpha, saveFlags); 486 } 487 return save(saveFlags); 488 } 489 490 private native int nSaveLayerAlpha(int renderer, float left, float top, float right, 491 float bottom, int alpha, int saveFlags); 492 493 @Override 494 public void restore() { 495 nRestore(mRenderer); 496 } 497 498 private native void nRestore(int renderer); 499 500 @Override 501 public void restoreToCount(int saveCount) { 502 nRestoreToCount(mRenderer, saveCount); 503 } 504 505 private native void nRestoreToCount(int renderer, int saveCount); 506 507 @Override 508 public int getSaveCount() { 509 return nGetSaveCount(mRenderer); 510 } 511 512 private native int nGetSaveCount(int renderer); 513 514 /////////////////////////////////////////////////////////////////////////// 515 // Filtering 516 /////////////////////////////////////////////////////////////////////////// 517 518 @Override 519 public void setDrawFilter(DrawFilter filter) { 520 mFilter = filter; 521 } 522 523 @Override 524 public DrawFilter getDrawFilter() { 525 return mFilter; 526 } 527 528 /////////////////////////////////////////////////////////////////////////// 529 // Drawing 530 /////////////////////////////////////////////////////////////////////////// 531 532 @Override 533 public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, 534 Paint paint) { 535 boolean hasModifier = setupModifiers(paint); 536 nDrawArc(mRenderer, oval.left, oval.top, oval.right, oval.bottom, startAngle, sweepAngle, 537 useCenter, paint.mNativePaint); 538 if (hasModifier) nResetModifiers(mRenderer); 539 } 540 541 private native void nDrawArc(int renderer, float left, float top, float right, float bottom, 542 float startAngle, float sweepAngle, boolean useCenter, int paint); 543 544 @Override 545 public void drawARGB(int a, int r, int g, int b) { 546 drawColor((a & 0xFF) << 24 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 547 } 548 549 @Override 550 public void drawPatch(Bitmap bitmap, byte[] chunks, RectF dst, Paint paint) { 551 // Shaders are ignored when drawing patches 552 boolean hasColorFilter = paint != null && setupColorFilter(paint); 553 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 554 nDrawPatch(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, chunks, 555 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 556 if (hasColorFilter) nResetModifiers(mRenderer); 557 } 558 559 private native void nDrawPatch(int renderer, int bitmap, byte[] buffer, byte[] chunks, 560 float left, float top, float right, float bottom, int paint); 561 562 @Override 563 public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) { 564 // Shaders are ignored when drawing bitmaps 565 boolean hasColorFilter = paint != null && setupColorFilter(paint); 566 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 567 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, nativePaint); 568 if (hasColorFilter) nResetModifiers(mRenderer); 569 } 570 571 private native void nDrawBitmap( 572 int renderer, int bitmap, byte[] buffer, float left, float top, int paint); 573 574 @Override 575 public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) { 576 // Shaders are ignored when drawing bitmaps 577 boolean hasColorFilter = paint != null && setupColorFilter(paint); 578 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 579 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, 580 matrix.native_instance, nativePaint); 581 if (hasColorFilter) nResetModifiers(mRenderer); 582 } 583 584 private native void nDrawBitmap(int renderer, int bitmap, byte[] buff, int matrix, int paint); 585 586 @Override 587 public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) { 588 // Shaders are ignored when drawing bitmaps 589 boolean hasColorFilter = paint != null && setupColorFilter(paint); 590 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 591 592 int left, top, right, bottom; 593 if (src == null) { 594 left = top = 0; 595 right = bitmap.getWidth(); 596 bottom = bitmap.getHeight(); 597 } else { 598 left = src.left; 599 right = src.right; 600 top = src.top; 601 bottom = src.bottom; 602 } 603 604 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, right, bottom, 605 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 606 if (hasColorFilter) nResetModifiers(mRenderer); 607 } 608 609 @Override 610 public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) { 611 // Shaders are ignored when drawing bitmaps 612 boolean hasColorFilter = paint != null && setupColorFilter(paint); 613 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 614 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, src.left, src.top, src.right, 615 src.bottom, dst.left, dst.top, dst.right, dst.bottom, nativePaint); 616 if (hasColorFilter) nResetModifiers(mRenderer); 617 } 618 619 private native void nDrawBitmap(int renderer, int bitmap, byte[] buffer, 620 float srcLeft, float srcTop, float srcRight, float srcBottom, 621 float left, float top, float right, float bottom, int paint); 622 623 @Override 624 public void drawBitmap(int[] colors, int offset, int stride, float x, float y, 625 int width, int height, boolean hasAlpha, Paint paint) { 626 // Shaders are ignored when drawing bitmaps 627 boolean hasColorFilter = paint != null && setupColorFilter(paint); 628 final Bitmap.Config config = hasAlpha ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; 629 final Bitmap b = Bitmap.createBitmap(colors, offset, stride, width, height, config); 630 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 631 nDrawBitmap(mRenderer, b.mNativeBitmap, b.mBuffer, x, y, nativePaint); 632 b.recycle(); 633 if (hasColorFilter) nResetModifiers(mRenderer); 634 } 635 636 @Override 637 public void drawBitmap(int[] colors, int offset, int stride, int x, int y, 638 int width, int height, boolean hasAlpha, Paint paint) { 639 // Shaders are ignored when drawing bitmaps 640 drawBitmap(colors, offset, stride, (float) x, (float) y, width, height, hasAlpha, paint); 641 } 642 643 @Override 644 public void drawBitmapMesh(Bitmap bitmap, int meshWidth, int meshHeight, float[] verts, 645 int vertOffset, int[] colors, int colorOffset, Paint paint) { 646 if (meshWidth < 0 || meshHeight < 0 || vertOffset < 0 || colorOffset < 0) { 647 throw new ArrayIndexOutOfBoundsException(); 648 } 649 650 if (meshWidth == 0 || meshHeight == 0) { 651 return; 652 } 653 654 final int count = (meshWidth + 1) * (meshHeight + 1); 655 checkRange(verts.length, vertOffset, count * 2); 656 657 // TODO: Colors are ignored for now 658 colors = null; 659 colorOffset = 0; 660 661 boolean hasColorFilter = paint != null && setupColorFilter(paint); 662 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 663 nDrawBitmapMesh(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, meshWidth, meshHeight, 664 verts, vertOffset, colors, colorOffset, nativePaint); 665 if (hasColorFilter) nResetModifiers(mRenderer); 666 } 667 668 private native void nDrawBitmapMesh(int renderer, int bitmap, byte[] buffer, 669 int meshWidth, int meshHeight, float[] verts, int vertOffset, 670 int[] colors, int colorOffset, int paint); 671 672 @Override 673 public void drawCircle(float cx, float cy, float radius, Paint paint) { 674 boolean hasModifier = setupModifiers(paint); 675 nDrawCircle(mRenderer, cx, cy, radius, paint.mNativePaint); 676 if (hasModifier) nResetModifiers(mRenderer); 677 } 678 679 private native void nDrawCircle(int renderer, float cx, float cy, float radius, int paint); 680 681 @Override 682 public void drawColor(int color) { 683 drawColor(color, PorterDuff.Mode.SRC_OVER); 684 } 685 686 @Override 687 public void drawColor(int color, PorterDuff.Mode mode) { 688 nDrawColor(mRenderer, color, mode.nativeInt); 689 } 690 691 private native void nDrawColor(int renderer, int color, int mode); 692 693 @Override 694 public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) { 695 mLine[0] = startX; 696 mLine[1] = startY; 697 mLine[2] = stopX; 698 mLine[3] = stopY; 699 drawLines(mLine, 0, 4, paint); 700 } 701 702 @Override 703 public void drawLines(float[] pts, int offset, int count, Paint paint) { 704 if ((offset | count) < 0 || offset + count > pts.length) { 705 throw new IllegalArgumentException("The lines array must contain 4 elements per line."); 706 } 707 boolean hasModifier = setupModifiers(paint); 708 nDrawLines(mRenderer, pts, offset, count, paint.mNativePaint); 709 if (hasModifier) nResetModifiers(mRenderer); 710 } 711 712 private native void nDrawLines(int renderer, float[] points, int offset, int count, int paint); 713 714 @Override 715 public void drawLines(float[] pts, Paint paint) { 716 drawLines(pts, 0, pts.length, paint); 717 } 718 719 @Override 720 public void drawOval(RectF oval, Paint paint) { 721 boolean hasModifier = setupModifiers(paint); 722 nDrawOval(mRenderer, oval.left, oval.top, oval.right, oval.bottom, paint.mNativePaint); 723 if (hasModifier) nResetModifiers(mRenderer); 724 } 725 726 private native void nDrawOval(int renderer, float left, float top, float right, float bottom, 727 int paint); 728 729 @Override 730 public void drawPaint(Paint paint) { 731 final Rect r = mClipBounds; 732 nGetClipBounds(mRenderer, r); 733 drawRect(r.left, r.top, r.right, r.bottom, paint); 734 } 735 736 @Override 737 public void drawPath(Path path, Paint paint) { 738 boolean hasModifier = setupModifiers(paint); 739 if (path.isSimplePath) { 740 if (path.rects != null) { 741 nDrawRects(mRenderer, path.rects.mNativeRegion, paint.mNativePaint); 742 } 743 } else { 744 nDrawPath(mRenderer, path.mNativePath, paint.mNativePaint); 745 } 746 if (hasModifier) nResetModifiers(mRenderer); 747 } 748 749 private native void nDrawPath(int renderer, int path, int paint); 750 private native void nDrawRects(int renderer, int region, int paint); 751 752 @Override 753 public void drawPicture(Picture picture) { 754 throw new UnsupportedOperationException(); 755 } 756 757 @Override 758 public void drawPicture(Picture picture, Rect dst) { 759 throw new UnsupportedOperationException(); 760 } 761 762 @Override 763 public void drawPicture(Picture picture, RectF dst) { 764 throw new UnsupportedOperationException(); 765 } 766 767 @Override 768 public void drawPoint(float x, float y, Paint paint) { 769 mPoint[0] = x; 770 mPoint[1] = y; 771 drawPoints(mPoint, 0, 1, paint); 772 } 773 774 @Override 775 public void drawPoints(float[] pts, int offset, int count, Paint paint) { 776 // TODO: Implement 777 } 778 779 @Override 780 public void drawPoints(float[] pts, Paint paint) { 781 drawPoints(pts, 0, pts.length / 2, paint); 782 } 783 784 @Override 785 public void drawPosText(char[] text, int index, int count, float[] pos, Paint paint) { 786 // TODO: Implement 787 } 788 789 @Override 790 public void drawPosText(String text, float[] pos, Paint paint) { 791 // TODO: Implement 792 } 793 794 @Override 795 public void drawRect(float left, float top, float right, float bottom, Paint paint) { 796 boolean hasModifier = setupModifiers(paint); 797 nDrawRect(mRenderer, left, top, right, bottom, paint.mNativePaint); 798 if (hasModifier) nResetModifiers(mRenderer); 799 } 800 801 private native void nDrawRect(int renderer, float left, float top, float right, float bottom, 802 int paint); 803 804 @Override 805 public void drawRect(Rect r, Paint paint) { 806 drawRect(r.left, r.top, r.right, r.bottom, paint); 807 } 808 809 @Override 810 public void drawRect(RectF r, Paint paint) { 811 drawRect(r.left, r.top, r.right, r.bottom, paint); 812 } 813 814 @Override 815 public void drawRGB(int r, int g, int b) { 816 drawColor(0xFF000000 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 817 } 818 819 @Override 820 public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) { 821 boolean hasModifier = setupModifiers(paint); 822 nDrawRoundRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 823 rx, ry, paint.mNativePaint); 824 if (hasModifier) nResetModifiers(mRenderer); 825 } 826 827 private native void nDrawRoundRect(int renderer, float left, float top, 828 float right, float bottom, float rx, float y, int paint); 829 830 @Override 831 public void drawText(char[] text, int index, int count, float x, float y, Paint paint) { 832 if ((index | count | (index + count) | (text.length - index - count)) < 0) { 833 throw new IndexOutOfBoundsException(); 834 } 835 836 boolean hasModifier = setupModifiers(paint); 837 try { 838 nDrawText(mRenderer, text, index, count, x, y, paint.mBidiFlags, paint.mNativePaint); 839 } finally { 840 if (hasModifier) nResetModifiers(mRenderer); 841 } 842 } 843 844 private native void nDrawText(int renderer, char[] text, int index, int count, float x, float y, 845 int bidiFlags, int paint); 846 847 @Override 848 public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) { 849 boolean hasModifier = setupModifiers(paint); 850 try { 851 if (text instanceof String || text instanceof SpannedString || 852 text instanceof SpannableString) { 853 nDrawText(mRenderer, text.toString(), start, end, x, y, paint.mBidiFlags, 854 paint.mNativePaint); 855 } else if (text instanceof GraphicsOperations) { 856 ((GraphicsOperations) text).drawText(this, start, end, x, y, 857 paint); 858 } else { 859 char[] buf = TemporaryBuffer.obtain(end - start); 860 TextUtils.getChars(text, start, end, buf, 0); 861 nDrawText(mRenderer, buf, 0, end - start, x, y, paint.mBidiFlags, paint.mNativePaint); 862 TemporaryBuffer.recycle(buf); 863 } 864 } finally { 865 if (hasModifier) nResetModifiers(mRenderer); 866 } 867 } 868 869 @Override 870 public void drawText(String text, int start, int end, float x, float y, Paint paint) { 871 if ((start | end | (end - start) | (text.length() - end)) < 0) { 872 throw new IndexOutOfBoundsException(); 873 } 874 875 boolean hasModifier = setupModifiers(paint); 876 try { 877 nDrawText(mRenderer, text, start, end, x, y, paint.mBidiFlags, paint.mNativePaint); 878 } finally { 879 if (hasModifier) nResetModifiers(mRenderer); 880 } 881 } 882 883 private native void nDrawText(int renderer, String text, int start, int end, float x, float y, 884 int bidiFlags, int paint); 885 886 @Override 887 public void drawText(String text, float x, float y, Paint paint) { 888 boolean hasModifier = setupModifiers(paint); 889 try { 890 nDrawText(mRenderer, text, 0, text.length(), x, y, paint.mBidiFlags, 891 paint.mNativePaint); 892 } finally { 893 if (hasModifier) nResetModifiers(mRenderer); 894 } 895 } 896 897 @Override 898 public void drawTextOnPath(char[] text, int index, int count, Path path, float hOffset, 899 float vOffset, Paint paint) { 900 // TODO: Implement 901 } 902 903 @Override 904 public void drawTextOnPath(String text, Path path, float hOffset, float vOffset, Paint paint) { 905 // TODO: Implement 906 } 907 908 @Override 909 public void drawTextRun(char[] text, int index, int count, int contextIndex, int contextCount, 910 float x, float y, int dir, Paint paint) { 911 if ((index | count | text.length - index - count) < 0) { 912 throw new IndexOutOfBoundsException(); 913 } 914 if (dir != DIRECTION_LTR && dir != DIRECTION_RTL) { 915 throw new IllegalArgumentException("Unknown direction: " + dir); 916 } 917 918 boolean hasModifier = setupModifiers(paint); 919 try { 920 nDrawTextRun(mRenderer, text, index, count, contextIndex, contextCount, x, y, dir, 921 paint.mNativePaint); 922 } finally { 923 if (hasModifier) nResetModifiers(mRenderer); 924 } 925 } 926 927 private native void nDrawTextRun(int renderer, char[] text, int index, int count, 928 int contextIndex, int contextCount, float x, float y, int dir, int nativePaint); 929 930 @Override 931 public void drawTextRun(CharSequence text, int start, int end, int contextStart, int contextEnd, 932 float x, float y, int dir, Paint paint) { 933 if ((start | end | end - start | text.length() - end) < 0) { 934 throw new IndexOutOfBoundsException(); 935 } 936 937 boolean hasModifier = setupModifiers(paint); 938 try { 939 int flags = dir == 0 ? 0 : 1; 940 if (text instanceof String || text instanceof SpannedString || 941 text instanceof SpannableString) { 942 nDrawTextRun(mRenderer, text.toString(), start, end, contextStart, 943 contextEnd, x, y, flags, paint.mNativePaint); 944 } else if (text instanceof GraphicsOperations) { 945 ((GraphicsOperations) text).drawTextRun(this, start, end, 946 contextStart, contextEnd, x, y, flags, paint); 947 } else { 948 int contextLen = contextEnd - contextStart; 949 int len = end - start; 950 char[] buf = TemporaryBuffer.obtain(contextLen); 951 TextUtils.getChars(text, contextStart, contextEnd, buf, 0); 952 nDrawTextRun(mRenderer, buf, start - contextStart, len, 0, contextLen, 953 x, y, flags, paint.mNativePaint); 954 TemporaryBuffer.recycle(buf); 955 } 956 } finally { 957 if (hasModifier) nResetModifiers(mRenderer); 958 } 959 } 960 961 private native void nDrawTextRun(int renderer, String text, int start, int end, 962 int contextStart, int contextEnd, float x, float y, int flags, int nativePaint); 963 964 @Override 965 public void drawVertices(VertexMode mode, int vertexCount, float[] verts, int vertOffset, 966 float[] texs, int texOffset, int[] colors, int colorOffset, short[] indices, 967 int indexOffset, int indexCount, Paint paint) { 968 // TODO: Implement 969 } 970 971 private boolean setupModifiers(Paint paint) { 972 boolean hasModifier = false; 973 974 if (paint.hasShadow) { 975 nSetupShadow(mRenderer, paint.shadowRadius, paint.shadowDx, paint.shadowDy, 976 paint.shadowColor); 977 hasModifier = true; 978 } 979 980 final Shader shader = paint.getShader(); 981 if (shader != null) { 982 nSetupShader(mRenderer, shader.native_shader); 983 hasModifier = true; 984 } 985 986 final ColorFilter filter = paint.getColorFilter(); 987 if (filter != null) { 988 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 989 hasModifier = true; 990 } 991 992 return hasModifier; 993 } 994 995 private boolean setupColorFilter(Paint paint) { 996 final ColorFilter filter = paint.getColorFilter(); 997 if (filter != null) { 998 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 999 return true; 1000 } 1001 return false; 1002 } 1003 1004 private native void nSetupShader(int renderer, int shader); 1005 private native void nSetupColorFilter(int renderer, int colorFilter); 1006 private native void nSetupShadow(int renderer, float radius, float dx, float dy, int color); 1007 1008 private native void nResetModifiers(int renderer); 1009} 1010