GLES20Canvas.java revision 1e45aae5de003657e5d18f74d34998f5de5db5b7
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 38import javax.microedition.khronos.opengles.GL; 39 40/** 41 * An implementation of Canvas on top of OpenGL ES 2.0. 42 */ 43class GLES20Canvas extends Canvas { 44 @SuppressWarnings({"FieldCanBeLocal", "UnusedDeclaration"}) 45 private final GL mGl; 46 private final boolean mOpaque; 47 private final int mRenderer; 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 /////////////////////////////////////////////////////////////////////////// 60 // JNI 61 /////////////////////////////////////////////////////////////////////////// 62 63 private static native boolean nIsAvailable(); 64 private static boolean sIsAvailable = nIsAvailable(); 65 66 static boolean isAvailable() { 67 return sIsAvailable; 68 } 69 70 /////////////////////////////////////////////////////////////////////////// 71 // Constructors 72 /////////////////////////////////////////////////////////////////////////// 73 74 GLES20Canvas(GL gl, boolean translucent) { 75 mGl = gl; 76 mOpaque = !translucent; 77 78 mRenderer = nCreateRenderer(); 79 } 80 81 private native int nCreateRenderer(); 82 83 @Override 84 protected void finalize() throws Throwable { 85 try { 86 super.finalize(); 87 } finally { 88 nDestroyRenderer(mRenderer); 89 } 90 } 91 92 private native void nDestroyRenderer(int renderer); 93 94 /////////////////////////////////////////////////////////////////////////// 95 // Canvas management 96 /////////////////////////////////////////////////////////////////////////// 97 98 @Override 99 public boolean isHardwareAccelerated() { 100 return true; 101 } 102 103 @Override 104 public void setBitmap(Bitmap bitmap) { 105 throw new UnsupportedOperationException(); 106 } 107 108 @Override 109 public boolean isOpaque() { 110 return mOpaque; 111 } 112 113 @Override 114 public int getWidth() { 115 return mWidth; 116 } 117 118 @Override 119 public int getHeight() { 120 return mHeight; 121 } 122 123 /////////////////////////////////////////////////////////////////////////// 124 // Setup 125 /////////////////////////////////////////////////////////////////////////// 126 127 @Override 128 public void setViewport(int width, int height) { 129 mWidth = width; 130 mHeight = height; 131 132 nSetViewport(mRenderer, width, height); 133 } 134 135 private native void nSetViewport(int renderer, int width, int height); 136 137 void onPreDraw() { 138 nPrepare(mRenderer); 139 } 140 141 private native void nPrepare(int renderer); 142 143 /////////////////////////////////////////////////////////////////////////// 144 // Clipping 145 /////////////////////////////////////////////////////////////////////////// 146 147 @Override 148 public boolean clipPath(Path path) { 149 throw new UnsupportedOperationException(); 150 } 151 152 @Override 153 public boolean clipPath(Path path, Region.Op op) { 154 throw new UnsupportedOperationException(); 155 } 156 157 @Override 158 public boolean clipRect(float left, float top, float right, float bottom) { 159 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 160 } 161 162 private native boolean nClipRect(int renderer, float left, float top, 163 float right, float bottom, int op); 164 165 @Override 166 public boolean clipRect(float left, float top, float right, float bottom, Region.Op op) { 167 return nClipRect(mRenderer, left, top, right, bottom, op.nativeInt); 168 } 169 170 @Override 171 public boolean clipRect(int left, int top, int right, int bottom) { 172 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 173 } 174 175 private native boolean nClipRect(int renderer, int left, int top, int right, int bottom, int op); 176 177 @Override 178 public boolean clipRect(Rect rect) { 179 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 180 Region.Op.INTERSECT.nativeInt); 181 } 182 183 @Override 184 public boolean clipRect(Rect rect, Region.Op op) { 185 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 186 } 187 188 @Override 189 public boolean clipRect(RectF rect) { 190 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 191 Region.Op.INTERSECT.nativeInt); 192 } 193 194 @Override 195 public boolean clipRect(RectF rect, Region.Op op) { 196 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 197 } 198 199 @Override 200 public boolean clipRegion(Region region) { 201 throw new UnsupportedOperationException(); 202 } 203 204 @Override 205 public boolean clipRegion(Region region, Region.Op op) { 206 throw new UnsupportedOperationException(); 207 } 208 209 @Override 210 public boolean getClipBounds(Rect bounds) { 211 return nGetClipBounds(mRenderer, bounds); 212 } 213 214 private native boolean nGetClipBounds(int renderer, Rect bounds); 215 216 @Override 217 public boolean quickReject(float left, float top, float right, float bottom, EdgeType type) { 218 return nQuickReject(mRenderer, left, top, right, bottom, type.nativeInt); 219 } 220 221 private native boolean nQuickReject(int renderer, float left, float top, 222 float right, float bottom, int edge); 223 224 @Override 225 public boolean quickReject(Path path, EdgeType type) { 226 throw new UnsupportedOperationException(); 227 } 228 229 @Override 230 public boolean quickReject(RectF rect, EdgeType type) { 231 return quickReject(rect.left, rect.top, rect.right, rect.bottom, type); 232 } 233 234 /////////////////////////////////////////////////////////////////////////// 235 // Transformations 236 /////////////////////////////////////////////////////////////////////////// 237 238 @Override 239 public void translate(float dx, float dy) { 240 nTranslate(mRenderer, dx, dy); 241 } 242 243 private native void nTranslate(int renderer, float dx, float dy); 244 245 @Override 246 public void skew(float sx, float sy) { 247 throw new UnsupportedOperationException(); 248 } 249 250 @Override 251 public void rotate(float degrees) { 252 nRotate(mRenderer, degrees); 253 } 254 255 private native void nRotate(int renderer, float degrees); 256 257 @Override 258 public void scale(float sx, float sy) { 259 nScale(mRenderer, sx, sy); 260 } 261 262 private native void nScale(int renderer, float sx, float sy); 263 264 @Override 265 public void setMatrix(Matrix matrix) { 266 nSetMatrix(mRenderer, matrix.native_instance); 267 } 268 269 private native void nSetMatrix(int renderer, int matrix); 270 271 @Override 272 public void getMatrix(Matrix matrix) { 273 nGetMatrix(mRenderer, matrix.native_instance); 274 } 275 276 private native void nGetMatrix(int renderer, int matrix); 277 278 @Override 279 public void concat(Matrix matrix) { 280 nConcatMatrix(mRenderer, matrix.native_instance); 281 } 282 283 private native void nConcatMatrix(int renderer, int matrix); 284 285 /////////////////////////////////////////////////////////////////////////// 286 // State management 287 /////////////////////////////////////////////////////////////////////////// 288 289 @Override 290 public int save() { 291 return nSave(mRenderer, 0); 292 } 293 294 @Override 295 public int save(int saveFlags) { 296 return nSave(mRenderer, saveFlags); 297 } 298 299 private native int nSave(int renderer, int flags); 300 301 @Override 302 public int saveLayer(RectF bounds, Paint paint, int saveFlags) { 303 return saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom, paint, saveFlags); 304 } 305 306 @Override 307 public int saveLayer(float left, float top, float right, float bottom, Paint paint, 308 int saveFlags) { 309 int nativePaint = paint == null ? 0 : paint.mNativePaint; 310 return nSaveLayer(mRenderer, left, top, right, bottom, nativePaint, saveFlags); 311 } 312 313 private native int nSaveLayer(int renderer, float left, float top, float right, float bottom, 314 int paint, int saveFlags); 315 316 @Override 317 public int saveLayerAlpha(RectF bounds, int alpha, int saveFlags) { 318 return saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom, 319 alpha, saveFlags); 320 } 321 322 @Override 323 public int saveLayerAlpha(float left, float top, float right, float bottom, int alpha, 324 int saveFlags) { 325 return nSaveLayerAlpha(mRenderer, left, top, right, bottom, alpha, saveFlags); 326 } 327 328 private native int nSaveLayerAlpha(int renderer, float left, float top, float right, 329 float bottom, int alpha, int saveFlags); 330 331 @Override 332 public void restore() { 333 nRestore(mRenderer); 334 } 335 336 private native void nRestore(int renderer); 337 338 @Override 339 public void restoreToCount(int saveCount) { 340 nRestoreToCount(mRenderer, saveCount); 341 } 342 343 private native void nRestoreToCount(int renderer, int saveCount); 344 345 @Override 346 public int getSaveCount() { 347 return nGetSaveCount(mRenderer); 348 } 349 350 private native int nGetSaveCount(int renderer); 351 352 /////////////////////////////////////////////////////////////////////////// 353 // Filtering 354 /////////////////////////////////////////////////////////////////////////// 355 356 @Override 357 public void setDrawFilter(DrawFilter filter) { 358 mFilter = filter; 359 } 360 361 @Override 362 public DrawFilter getDrawFilter() { 363 return mFilter; 364 } 365 366 /////////////////////////////////////////////////////////////////////////// 367 // Drawing 368 /////////////////////////////////////////////////////////////////////////// 369 370 @Override 371 public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, 372 Paint paint) { 373 throw new UnsupportedOperationException(); 374 } 375 376 @Override 377 public void drawARGB(int a, int r, int g, int b) { 378 drawColor((a & 0xFF) << 24 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 379 } 380 381 @Override 382 public void drawPatch(Bitmap bitmap, byte[] chunks, RectF dst, Paint paint) { 383 // Shaders are ignored when drawing patches 384 boolean hasColorFilter = paint != null && setupColorFilter(paint); 385 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 386 nDrawPatch(mRenderer, bitmap.mNativeBitmap, chunks, dst.left, dst.top, 387 dst.right, dst.bottom, nativePaint); 388 if (hasColorFilter) nResetModifiers(mRenderer); 389 } 390 391 private native void nDrawPatch(int renderer, int bitmap, byte[] chunks, float left, float top, 392 float right, float bottom, int paint); 393 394 @Override 395 public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) { 396 // Shaders are ignored when drawing bitmaps 397 boolean hasColorFilter = paint != null && setupColorFilter(paint); 398 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 399 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, left, top, nativePaint); 400 if (hasColorFilter) nResetModifiers(mRenderer); 401 } 402 403 private native void nDrawBitmap(int renderer, int bitmap, float left, float top, int paint); 404 405 @Override 406 public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) { 407 // Shaders are ignored when drawing bitmaps 408 boolean hasColorFilter = paint != null && setupColorFilter(paint); 409 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 410 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, matrix.native_instance, nativePaint); 411 if (hasColorFilter) nResetModifiers(mRenderer); 412 } 413 414 private native void nDrawBitmap(int renderer, int bitmap, int matrix, int paint); 415 416 @Override 417 public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) { 418 // Shaders are ignored when drawing bitmaps 419 boolean hasColorFilter = paint != null && setupColorFilter(paint); 420 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 421 422 int left, top, right, bottom; 423 if (src == null) { 424 left = top = 0; 425 right = bitmap.getWidth(); 426 bottom = bitmap.getHeight(); 427 } else { 428 left = src.left; 429 right = src.right; 430 top = src.top; 431 bottom = src.bottom; 432 } 433 434 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, left, top, right, bottom, 435 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 436 if (hasColorFilter) nResetModifiers(mRenderer); 437 } 438 439 @Override 440 public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) { 441 // Shaders are ignored when drawing bitmaps 442 boolean hasColorFilter = paint != null && setupColorFilter(paint); 443 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 444 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, src.left, src.top, src.right, src.bottom, 445 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 446 if (hasColorFilter) nResetModifiers(mRenderer); 447 } 448 449 private native void nDrawBitmap(int renderer, int bitmap, 450 float srcLeft, float srcTop, float srcRight, float srcBottom, 451 float left, float top, float right, float bottom, int paint); 452 453 @Override 454 public void drawBitmap(int[] colors, int offset, int stride, float x, float y, 455 int width, int height, boolean hasAlpha, Paint paint) { 456 // Shaders are ignored when drawing bitmaps 457 boolean hasColorFilter = paint != null && setupColorFilter(paint); 458 final Bitmap.Config config = hasAlpha ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; 459 final Bitmap b = Bitmap.createBitmap(colors, offset, stride, width, height, config); 460 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 461 nDrawBitmap(mRenderer, b.mNativeBitmap, x, y, nativePaint); 462 b.recycle(); 463 if (hasColorFilter) nResetModifiers(mRenderer); 464 } 465 466 @Override 467 public void drawBitmap(int[] colors, int offset, int stride, int x, int y, 468 int width, int height, boolean hasAlpha, Paint paint) { 469 // Shaders are ignored when drawing bitmaps 470 drawBitmap(colors, offset, stride, (float) x, (float) y, width, height, hasAlpha, paint); 471 } 472 473 @Override 474 public void drawBitmapMesh(Bitmap bitmap, int meshWidth, int meshHeight, float[] verts, 475 int vertOffset, int[] colors, int colorOffset, Paint paint) { 476 // TODO: Implement 477 } 478 479 @Override 480 public void drawCircle(float cx, float cy, float radius, Paint paint) { 481 throw new UnsupportedOperationException(); 482 } 483 484 @Override 485 public void drawColor(int color) { 486 drawColor(color, PorterDuff.Mode.SRC_OVER); 487 } 488 489 @Override 490 public void drawColor(int color, PorterDuff.Mode mode) { 491 nDrawColor(mRenderer, color, mode.nativeInt); 492 } 493 494 private native void nDrawColor(int renderer, int color, int mode); 495 496 @Override 497 public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) { 498 mLine[0] = startX; 499 mLine[1] = startY; 500 mLine[2] = stopX; 501 mLine[3] = stopY; 502 drawLines(mLine, 0, 1, paint); 503 } 504 505 @Override 506 public void drawLines(float[] pts, int offset, int count, Paint paint) { 507 // TODO: Implement 508 } 509 510 @Override 511 public void drawLines(float[] pts, Paint paint) { 512 drawLines(pts, 0, pts.length / 4, paint); 513 } 514 515 @Override 516 public void drawOval(RectF oval, Paint paint) { 517 throw new UnsupportedOperationException(); 518 } 519 520 @Override 521 public void drawPaint(Paint paint) { 522 final Rect r = mClipBounds; 523 nGetClipBounds(mRenderer, r); 524 drawRect(r.left, r.top, r.right, r.bottom, paint); 525 } 526 527 @Override 528 public void drawPath(Path path, Paint paint) { 529 boolean hasModifier = setupModifiers(paint); 530 if (path.isSimplePath) { 531 if (path.rects != null) { 532 nDrawRects(mRenderer, path.rects.mNativeRegion, paint.mNativePaint); 533 } 534 } else { 535 nDrawPath(mRenderer, path.mNativePath, paint.mNativePaint); 536 } 537 if (hasModifier) nResetModifiers(mRenderer); 538 } 539 540 private native void nDrawPath(int renderer, int path, int paint); 541 private native void nDrawRects(int renderer, int region, int paint); 542 543 @Override 544 public void drawPicture(Picture picture) { 545 throw new UnsupportedOperationException(); 546 } 547 548 @Override 549 public void drawPicture(Picture picture, Rect dst) { 550 throw new UnsupportedOperationException(); 551 } 552 553 @Override 554 public void drawPicture(Picture picture, RectF dst) { 555 throw new UnsupportedOperationException(); 556 } 557 558 @Override 559 public void drawPoint(float x, float y, Paint paint) { 560 mPoint[0] = x; 561 mPoint[1] = y; 562 drawPoints(mPoint, 0, 1, paint); 563 } 564 565 @Override 566 public void drawPoints(float[] pts, int offset, int count, Paint paint) { 567 // TODO: Implement 568 } 569 570 @Override 571 public void drawPoints(float[] pts, Paint paint) { 572 drawPoints(pts, 0, pts.length / 2, paint); 573 } 574 575 @Override 576 public void drawPosText(char[] text, int index, int count, float[] pos, Paint paint) { 577 throw new UnsupportedOperationException(); 578 } 579 580 @Override 581 public void drawPosText(String text, float[] pos, Paint paint) { 582 throw new UnsupportedOperationException(); 583 } 584 585 @Override 586 public void drawRect(float left, float top, float right, float bottom, Paint paint) { 587 boolean hasModifier = setupModifiers(paint); 588 nDrawRect(mRenderer, left, top, right, bottom, paint.mNativePaint); 589 if (hasModifier) nResetModifiers(mRenderer); 590 } 591 592 private native void nDrawRect(int renderer, float left, float top, float right, float bottom, 593 int paint); 594 595 @Override 596 public void drawRect(Rect r, Paint paint) { 597 drawRect(r.left, r.top, r.right, r.bottom, paint); 598 } 599 600 @Override 601 public void drawRect(RectF r, Paint paint) { 602 drawRect(r.left, r.top, r.right, r.bottom, paint); 603 } 604 605 @Override 606 public void drawRGB(int r, int g, int b) { 607 drawColor(0xFF000000 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 608 } 609 610 @Override 611 public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) { 612 // TODO: Implement 613 } 614 615 @Override 616 public void drawText(char[] text, int index, int count, float x, float y, Paint paint) { 617 if ((index | count | (index + count) | (text.length - index - count)) < 0) { 618 throw new IndexOutOfBoundsException(); 619 } 620 621 boolean hasModifier = setupModifiers(paint); 622 try { 623 nDrawText(mRenderer, text, index, count, x, y, paint.mBidiFlags, paint.mNativePaint); 624 } finally { 625 if (hasModifier) nResetModifiers(mRenderer); 626 } 627 } 628 629 private native void nDrawText(int renderer, char[] text, int index, int count, float x, float y, 630 int bidiFlags, int paint); 631 632 @Override 633 public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) { 634 boolean hasModifier = setupModifiers(paint); 635 try { 636 if (text instanceof String || text instanceof SpannedString || 637 text instanceof SpannableString) { 638 nDrawText(mRenderer, text.toString(), start, end, x, y, paint.mBidiFlags, 639 paint.mNativePaint); 640 } else if (text instanceof GraphicsOperations) { 641 ((GraphicsOperations) text).drawText(this, start, end, x, y, 642 paint); 643 } else { 644 char[] buf = TemporaryBuffer.obtain(end - start); 645 TextUtils.getChars(text, start, end, buf, 0); 646 nDrawText(mRenderer, buf, 0, end - start, x, y, paint.mBidiFlags, paint.mNativePaint); 647 TemporaryBuffer.recycle(buf); 648 } 649 } finally { 650 if (hasModifier) nResetModifiers(mRenderer); 651 } 652 } 653 654 @Override 655 public void drawText(String text, int start, int end, float x, float y, Paint paint) { 656 if ((start | end | (end - start) | (text.length() - end)) < 0) { 657 throw new IndexOutOfBoundsException(); 658 } 659 660 boolean hasModifier = setupModifiers(paint); 661 try { 662 nDrawText(mRenderer, text, start, end, x, y, paint.mBidiFlags, paint.mNativePaint); 663 } finally { 664 if (hasModifier) nResetModifiers(mRenderer); 665 } 666 } 667 668 private native void nDrawText(int renderer, String text, int start, int end, float x, float y, 669 int bidiFlags, int paint); 670 671 @Override 672 public void drawText(String text, float x, float y, Paint paint) { 673 boolean hasModifier = setupModifiers(paint); 674 try { 675 nDrawText(mRenderer, text, 0, text.length(), x, y, paint.mBidiFlags, 676 paint.mNativePaint); 677 } finally { 678 if (hasModifier) nResetModifiers(mRenderer); 679 } 680 } 681 682 @Override 683 public void drawTextOnPath(char[] text, int index, int count, Path path, float hOffset, 684 float vOffset, Paint paint) { 685 throw new UnsupportedOperationException(); 686 } 687 688 @Override 689 public void drawTextOnPath(String text, Path path, float hOffset, float vOffset, Paint paint) { 690 throw new UnsupportedOperationException(); 691 } 692 693 @Override 694 public void drawTextRun(char[] text, int index, int count, int contextIndex, int contextCount, 695 float x, float y, int dir, Paint paint) { 696 if ((index | count | text.length - index - count) < 0) { 697 throw new IndexOutOfBoundsException(); 698 } 699 if (dir != DIRECTION_LTR && dir != DIRECTION_RTL) { 700 throw new IllegalArgumentException("Unknown direction: " + dir); 701 } 702 703 boolean hasModifier = setupModifiers(paint); 704 try { 705 nDrawTextRun(mRenderer, text, index, count, contextIndex, contextCount, x, y, dir, 706 paint.mNativePaint); 707 } finally { 708 if (hasModifier) nResetModifiers(mRenderer); 709 } 710 } 711 712 private native void nDrawTextRun(int renderer, char[] text, int index, int count, 713 int contextIndex, int contextCount, float x, float y, int dir, int nativePaint); 714 715 @Override 716 public void drawTextRun(CharSequence text, int start, int end, int contextStart, int contextEnd, 717 float x, float y, int dir, Paint paint) { 718 if ((start | end | end - start | text.length() - end) < 0) { 719 throw new IndexOutOfBoundsException(); 720 } 721 722 boolean hasModifier = setupModifiers(paint); 723 try { 724 int flags = dir == 0 ? 0 : 1; 725 if (text instanceof String || text instanceof SpannedString || 726 text instanceof SpannableString) { 727 nDrawTextRun(mRenderer, text.toString(), start, end, contextStart, 728 contextEnd, x, y, flags, paint.mNativePaint); 729 } else if (text instanceof GraphicsOperations) { 730 ((GraphicsOperations) text).drawTextRun(this, start, end, 731 contextStart, contextEnd, x, y, flags, paint); 732 } else { 733 int contextLen = contextEnd - contextStart; 734 int len = end - start; 735 char[] buf = TemporaryBuffer.obtain(contextLen); 736 TextUtils.getChars(text, contextStart, contextEnd, buf, 0); 737 nDrawTextRun(mRenderer, buf, start - contextStart, len, 0, contextLen, 738 x, y, flags, paint.mNativePaint); 739 TemporaryBuffer.recycle(buf); 740 } 741 } finally { 742 if (hasModifier) nResetModifiers(mRenderer); 743 } 744 } 745 746 private native void nDrawTextRun(int renderer, String text, int start, int end, 747 int contextStart, int contextEnd, float x, float y, int flags, int nativePaint); 748 749 @Override 750 public void drawVertices(VertexMode mode, int vertexCount, float[] verts, int vertOffset, 751 float[] texs, int texOffset, int[] colors, int colorOffset, short[] indices, 752 int indexOffset, int indexCount, Paint paint) { 753 // TODO: Implement 754 } 755 756 private boolean setupModifiers(Paint paint) { 757 boolean hasModifier = false; 758 759 if (paint.hasShadow) { 760 nSetupShadow(mRenderer, paint.shadowRadius, paint.shadowDx, paint.shadowDy, 761 paint.shadowColor); 762 hasModifier = true; 763 } 764 765 final Shader shader = paint.getShader(); 766 if (shader != null) { 767 nSetupShader(mRenderer, shader.native_shader); 768 hasModifier = true; 769 } 770 771 final ColorFilter filter = paint.getColorFilter(); 772 if (filter != null) { 773 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 774 hasModifier = true; 775 } 776 777 return hasModifier; 778 } 779 780 private boolean setupColorFilter(Paint paint) { 781 final ColorFilter filter = paint.getColorFilter(); 782 if (filter != null) { 783 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 784 return true; 785 } 786 return false; 787 } 788 789 private native void nSetupShader(int renderer, int shader); 790 private native void nSetupColorFilter(int renderer, int colorFilter); 791 private native void nSetupShadow(int renderer, float radius, float dx, float dy, int color); 792 793 private native void nResetModifiers(int renderer); 794} 795