GLES20Canvas.java revision 57066eb64c9a190d1afc87bb060bbb2d31e5b86c
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 fbo, boolean translucent) { 87 mOpaque = !translucent; 88 mRenderer = nCreateLayerRenderer(fbo); 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 fbo); 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, int[] layerInfo); 160 static native void nResizeLayer(int layerId, int layerTextureId, int width, int height, 161 int[] layerInfo); 162 static native void nDestroyLayer(int layerId, int layerTextureId); 163 static native void nDestroyLayerDeferred(int layerId, int layerTextureId); 164 165 /////////////////////////////////////////////////////////////////////////// 166 // Canvas management 167 /////////////////////////////////////////////////////////////////////////// 168 169 @Override 170 public boolean isOpaque() { 171 return mOpaque; 172 } 173 174 @Override 175 public int getWidth() { 176 return mWidth; 177 } 178 179 @Override 180 public int getHeight() { 181 return mHeight; 182 } 183 184 /////////////////////////////////////////////////////////////////////////// 185 // Setup 186 /////////////////////////////////////////////////////////////////////////// 187 188 @Override 189 public void setViewport(int width, int height) { 190 mWidth = width; 191 mHeight = height; 192 193 nSetViewport(mRenderer, width, height); 194 } 195 196 private native void nSetViewport(int renderer, int width, int height); 197 198 @Override 199 void onPreDraw() { 200 nPrepare(mRenderer, mOpaque); 201 } 202 203 private native void nPrepare(int renderer, boolean opaque); 204 205 @Override 206 void onPostDraw() { 207 nFinish(mRenderer); 208 } 209 210 private native void nFinish(int renderer); 211 212 @Override 213 public boolean acquireContext() { 214 if (!mContextLocked) { 215 nAcquireContext(mRenderer); 216 mContextLocked = true; 217 } 218 return mContextLocked; 219 } 220 221 private native void nAcquireContext(int renderer); 222 223 @Override 224 public void releaseContext() { 225 if (mContextLocked) { 226 nReleaseContext(mRenderer); 227 mContextLocked = false; 228 } 229 } 230 231 private native void nReleaseContext(int renderer); 232 233 /////////////////////////////////////////////////////////////////////////// 234 // Display list 235 /////////////////////////////////////////////////////////////////////////// 236 237 int getDisplayList() { 238 return nGetDisplayList(mRenderer); 239 } 240 241 private native int nGetDisplayList(int renderer); 242 243 static void destroyDisplayList(int displayList) { 244 nDestroyDisplayList(displayList); 245 } 246 247 private static native void nDestroyDisplayList(int displayList); 248 249 @Override 250 public void drawDisplayList(DisplayList displayList) { 251 nDrawDisplayList(mRenderer, ((GLES20DisplayList) displayList).mNativeDisplayList); 252 } 253 254 private native void nDrawDisplayList(int renderer, int displayList); 255 256 /////////////////////////////////////////////////////////////////////////// 257 // Hardware layer 258 /////////////////////////////////////////////////////////////////////////// 259 260 void drawHardwareLayer(float left, float top, float right, float bottom, 261 HardwareLayer layer, Paint paint) { 262 final GLES20Layer glLayer = (GLES20Layer) layer; 263 boolean hasColorFilter = paint != null && setupColorFilter(paint); 264 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 265 nDrawLayer(mRenderer, left, top, right, bottom, glLayer.mLayerTextureId, 266 glLayer.getU(), glLayer.getV(), nativePaint); 267 if (hasColorFilter) nResetModifiers(mRenderer); 268 } 269 270 private native void nDrawLayer(int renderer, float left, float top, float right, float bottom, 271 int layerTexture, float u, float v, int paint); 272 273 void interrupt() { 274 nInterrupt(mRenderer); 275 } 276 277 void resume() { 278 nResume(mRenderer); 279 } 280 281 private native void nInterrupt(int renderer); 282 private native void nResume(int renderer); 283 284 /////////////////////////////////////////////////////////////////////////// 285 // Clipping 286 /////////////////////////////////////////////////////////////////////////// 287 288 @Override 289 public boolean clipPath(Path path) { 290 throw new UnsupportedOperationException(); 291 } 292 293 @Override 294 public boolean clipPath(Path path, Region.Op op) { 295 throw new UnsupportedOperationException(); 296 } 297 298 @Override 299 public boolean clipRect(float left, float top, float right, float bottom) { 300 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 301 } 302 303 private native boolean nClipRect(int renderer, float left, float top, 304 float right, float bottom, int op); 305 306 @Override 307 public boolean clipRect(float left, float top, float right, float bottom, Region.Op op) { 308 return nClipRect(mRenderer, left, top, right, bottom, op.nativeInt); 309 } 310 311 @Override 312 public boolean clipRect(int left, int top, int right, int bottom) { 313 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 314 } 315 316 private native boolean nClipRect(int renderer, int left, int top, int right, int bottom, int op); 317 318 @Override 319 public boolean clipRect(Rect rect) { 320 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 321 Region.Op.INTERSECT.nativeInt); 322 } 323 324 @Override 325 public boolean clipRect(Rect rect, Region.Op op) { 326 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 327 } 328 329 @Override 330 public boolean clipRect(RectF rect) { 331 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 332 Region.Op.INTERSECT.nativeInt); 333 } 334 335 @Override 336 public boolean clipRect(RectF rect, Region.Op op) { 337 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 338 } 339 340 @Override 341 public boolean clipRegion(Region region) { 342 throw new UnsupportedOperationException(); 343 } 344 345 @Override 346 public boolean clipRegion(Region region, Region.Op op) { 347 throw new UnsupportedOperationException(); 348 } 349 350 @Override 351 public boolean getClipBounds(Rect bounds) { 352 return nGetClipBounds(mRenderer, bounds); 353 } 354 355 private native boolean nGetClipBounds(int renderer, Rect bounds); 356 357 @Override 358 public boolean quickReject(float left, float top, float right, float bottom, EdgeType type) { 359 return nQuickReject(mRenderer, left, top, right, bottom, type.nativeInt); 360 } 361 362 private native boolean nQuickReject(int renderer, float left, float top, 363 float right, float bottom, int edge); 364 365 @Override 366 public boolean quickReject(Path path, EdgeType type) { 367 throw new UnsupportedOperationException(); 368 } 369 370 @Override 371 public boolean quickReject(RectF rect, EdgeType type) { 372 return quickReject(rect.left, rect.top, rect.right, rect.bottom, type); 373 } 374 375 /////////////////////////////////////////////////////////////////////////// 376 // Transformations 377 /////////////////////////////////////////////////////////////////////////// 378 379 @Override 380 public void translate(float dx, float dy) { 381 nTranslate(mRenderer, dx, dy); 382 } 383 384 private native void nTranslate(int renderer, float dx, float dy); 385 386 @Override 387 public void skew(float sx, float sy) { 388 throw new UnsupportedOperationException(); 389 } 390 391 @Override 392 public void rotate(float degrees) { 393 nRotate(mRenderer, degrees); 394 } 395 396 private native void nRotate(int renderer, float degrees); 397 398 @Override 399 public void scale(float sx, float sy) { 400 nScale(mRenderer, sx, sy); 401 } 402 403 private native void nScale(int renderer, float sx, float sy); 404 405 @Override 406 public void setMatrix(Matrix matrix) { 407 nSetMatrix(mRenderer, matrix.native_instance); 408 } 409 410 private native void nSetMatrix(int renderer, int matrix); 411 412 @Override 413 public int getNativeMatrix() { 414 return nGetMatrix(mRenderer); 415 } 416 417 private native int nGetMatrix(int renderer); 418 419 @Override 420 public void getMatrix(Matrix matrix) { 421 nGetMatrix(mRenderer, matrix.native_instance); 422 } 423 424 private native void nGetMatrix(int renderer, int matrix); 425 426 @Override 427 public void concat(Matrix matrix) { 428 nConcatMatrix(mRenderer, matrix.native_instance); 429 } 430 431 private native void nConcatMatrix(int renderer, int matrix); 432 433 /////////////////////////////////////////////////////////////////////////// 434 // State management 435 /////////////////////////////////////////////////////////////////////////// 436 437 @Override 438 public int save() { 439 return nSave(mRenderer, Canvas.CLIP_SAVE_FLAG | Canvas.MATRIX_SAVE_FLAG); 440 } 441 442 @Override 443 public int save(int saveFlags) { 444 return nSave(mRenderer, saveFlags); 445 } 446 447 private native int nSave(int renderer, int flags); 448 449 @Override 450 public int saveLayer(RectF bounds, Paint paint, int saveFlags) { 451 return saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom, paint, saveFlags); 452 } 453 454 @Override 455 public int saveLayer(float left, float top, float right, float bottom, Paint paint, 456 int saveFlags) { 457 boolean hasColorFilter = paint != null && setupColorFilter(paint); 458 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 459 int count = nSaveLayer(mRenderer, left, top, right, bottom, nativePaint, saveFlags); 460 if (hasColorFilter) nResetModifiers(mRenderer); 461 return count; 462 } 463 464 private native int nSaveLayer(int renderer, float left, float top, float right, float bottom, 465 int paint, int saveFlags); 466 467 @Override 468 public int saveLayerAlpha(RectF bounds, int alpha, int saveFlags) { 469 return saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom, 470 alpha, saveFlags); 471 } 472 473 @Override 474 public int saveLayerAlpha(float left, float top, float right, float bottom, int alpha, 475 int saveFlags) { 476 return nSaveLayerAlpha(mRenderer, left, top, right, bottom, alpha, saveFlags); 477 } 478 479 private native int nSaveLayerAlpha(int renderer, float left, float top, float right, 480 float bottom, int alpha, int saveFlags); 481 482 @Override 483 public void restore() { 484 nRestore(mRenderer); 485 } 486 487 private native void nRestore(int renderer); 488 489 @Override 490 public void restoreToCount(int saveCount) { 491 nRestoreToCount(mRenderer, saveCount); 492 } 493 494 private native void nRestoreToCount(int renderer, int saveCount); 495 496 @Override 497 public int getSaveCount() { 498 return nGetSaveCount(mRenderer); 499 } 500 501 private native int nGetSaveCount(int renderer); 502 503 /////////////////////////////////////////////////////////////////////////// 504 // Filtering 505 /////////////////////////////////////////////////////////////////////////// 506 507 @Override 508 public void setDrawFilter(DrawFilter filter) { 509 mFilter = filter; 510 } 511 512 @Override 513 public DrawFilter getDrawFilter() { 514 return mFilter; 515 } 516 517 /////////////////////////////////////////////////////////////////////////// 518 // Drawing 519 /////////////////////////////////////////////////////////////////////////// 520 521 @Override 522 public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, 523 Paint paint) { 524 throw new UnsupportedOperationException(); 525 } 526 527 @Override 528 public void drawARGB(int a, int r, int g, int b) { 529 drawColor((a & 0xFF) << 24 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 530 } 531 532 @Override 533 public void drawPatch(Bitmap bitmap, byte[] chunks, RectF dst, Paint paint) { 534 // Shaders are ignored when drawing patches 535 boolean hasColorFilter = paint != null && setupColorFilter(paint); 536 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 537 nDrawPatch(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, chunks, 538 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 539 if (hasColorFilter) nResetModifiers(mRenderer); 540 } 541 542 private native void nDrawPatch(int renderer, int bitmap, byte[] buffer, byte[] chunks, 543 float left, float top, float right, float bottom, int paint); 544 545 @Override 546 public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) { 547 // Shaders are ignored when drawing bitmaps 548 boolean hasColorFilter = paint != null && setupColorFilter(paint); 549 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 550 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, nativePaint); 551 if (hasColorFilter) nResetModifiers(mRenderer); 552 } 553 554 private native void nDrawBitmap( 555 int renderer, int bitmap, byte[] buffer, float left, float top, int paint); 556 557 @Override 558 public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) { 559 // Shaders are ignored when drawing bitmaps 560 boolean hasColorFilter = paint != null && setupColorFilter(paint); 561 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 562 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, 563 matrix.native_instance, nativePaint); 564 if (hasColorFilter) nResetModifiers(mRenderer); 565 } 566 567 private native void nDrawBitmap(int renderer, int bitmap, byte[] buff, int matrix, int paint); 568 569 @Override 570 public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) { 571 // Shaders are ignored when drawing bitmaps 572 boolean hasColorFilter = paint != null && setupColorFilter(paint); 573 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 574 575 int left, top, right, bottom; 576 if (src == null) { 577 left = top = 0; 578 right = bitmap.getWidth(); 579 bottom = bitmap.getHeight(); 580 } else { 581 left = src.left; 582 right = src.right; 583 top = src.top; 584 bottom = src.bottom; 585 } 586 587 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, right, bottom, 588 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 589 if (hasColorFilter) nResetModifiers(mRenderer); 590 } 591 592 @Override 593 public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) { 594 // Shaders are ignored when drawing bitmaps 595 boolean hasColorFilter = paint != null && setupColorFilter(paint); 596 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 597 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, src.left, src.top, src.right, 598 src.bottom, dst.left, dst.top, dst.right, dst.bottom, nativePaint); 599 if (hasColorFilter) nResetModifiers(mRenderer); 600 } 601 602 private native void nDrawBitmap(int renderer, int bitmap, byte[] buffer, 603 float srcLeft, float srcTop, float srcRight, float srcBottom, 604 float left, float top, float right, float bottom, int paint); 605 606 @Override 607 public void drawBitmap(int[] colors, int offset, int stride, float x, float y, 608 int width, int height, boolean hasAlpha, Paint paint) { 609 // Shaders are ignored when drawing bitmaps 610 boolean hasColorFilter = paint != null && setupColorFilter(paint); 611 final Bitmap.Config config = hasAlpha ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; 612 final Bitmap b = Bitmap.createBitmap(colors, offset, stride, width, height, config); 613 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 614 nDrawBitmap(mRenderer, b.mNativeBitmap, b.mBuffer, x, y, nativePaint); 615 b.recycle(); 616 if (hasColorFilter) nResetModifiers(mRenderer); 617 } 618 619 @Override 620 public void drawBitmap(int[] colors, int offset, int stride, int x, int y, 621 int width, int height, boolean hasAlpha, Paint paint) { 622 // Shaders are ignored when drawing bitmaps 623 drawBitmap(colors, offset, stride, (float) x, (float) y, width, height, hasAlpha, paint); 624 } 625 626 @Override 627 public void drawBitmapMesh(Bitmap bitmap, int meshWidth, int meshHeight, float[] verts, 628 int vertOffset, int[] colors, int colorOffset, Paint paint) { 629 // TODO: Implement 630 } 631 632 @Override 633 public void drawCircle(float cx, float cy, float radius, Paint paint) { 634 throw new UnsupportedOperationException(); 635 } 636 637 @Override 638 public void drawColor(int color) { 639 drawColor(color, PorterDuff.Mode.SRC_OVER); 640 } 641 642 @Override 643 public void drawColor(int color, PorterDuff.Mode mode) { 644 nDrawColor(mRenderer, color, mode.nativeInt); 645 } 646 647 private native void nDrawColor(int renderer, int color, int mode); 648 649 @Override 650 public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) { 651 mLine[0] = startX; 652 mLine[1] = startY; 653 mLine[2] = stopX; 654 mLine[3] = stopY; 655 drawLines(mLine, 0, 4, paint); 656 } 657 658 @Override 659 public void drawLines(float[] pts, int offset, int count, Paint paint) { 660 if ((offset | count) < 0 || offset + count > pts.length) { 661 throw new IllegalArgumentException("The lines array must contain 4 elements per line."); 662 } 663 boolean hasModifier = setupModifiers(paint); 664 nDrawLines(mRenderer, pts, offset, count, paint.mNativePaint); 665 if (hasModifier) nResetModifiers(mRenderer); 666 } 667 668 private native void nDrawLines(int renderer, float[] points, int offset, int count, int paint); 669 670 @Override 671 public void drawLines(float[] pts, Paint paint) { 672 drawLines(pts, 0, pts.length, paint); 673 } 674 675 @Override 676 public void drawOval(RectF oval, Paint paint) { 677 throw new UnsupportedOperationException(); 678 } 679 680 @Override 681 public void drawPaint(Paint paint) { 682 final Rect r = mClipBounds; 683 nGetClipBounds(mRenderer, r); 684 drawRect(r.left, r.top, r.right, r.bottom, paint); 685 } 686 687 @Override 688 public void drawPath(Path path, Paint paint) { 689 boolean hasModifier = setupModifiers(paint); 690 if (path.isSimplePath) { 691 if (path.rects != null) { 692 nDrawRects(mRenderer, path.rects.mNativeRegion, paint.mNativePaint); 693 } 694 } else { 695 nDrawPath(mRenderer, path.mNativePath, paint.mNativePaint); 696 } 697 if (hasModifier) nResetModifiers(mRenderer); 698 } 699 700 private native void nDrawPath(int renderer, int path, int paint); 701 private native void nDrawRects(int renderer, int region, int paint); 702 703 @Override 704 public void drawPicture(Picture picture) { 705 throw new UnsupportedOperationException(); 706 } 707 708 @Override 709 public void drawPicture(Picture picture, Rect dst) { 710 throw new UnsupportedOperationException(); 711 } 712 713 @Override 714 public void drawPicture(Picture picture, RectF dst) { 715 throw new UnsupportedOperationException(); 716 } 717 718 @Override 719 public void drawPoint(float x, float y, Paint paint) { 720 mPoint[0] = x; 721 mPoint[1] = y; 722 drawPoints(mPoint, 0, 1, paint); 723 } 724 725 @Override 726 public void drawPoints(float[] pts, int offset, int count, Paint paint) { 727 // TODO: Implement 728 } 729 730 @Override 731 public void drawPoints(float[] pts, Paint paint) { 732 drawPoints(pts, 0, pts.length / 2, paint); 733 } 734 735 @Override 736 public void drawPosText(char[] text, int index, int count, float[] pos, Paint paint) { 737 throw new UnsupportedOperationException(); 738 } 739 740 @Override 741 public void drawPosText(String text, float[] pos, Paint paint) { 742 throw new UnsupportedOperationException(); 743 } 744 745 @Override 746 public void drawRect(float left, float top, float right, float bottom, Paint paint) { 747 boolean hasModifier = setupModifiers(paint); 748 nDrawRect(mRenderer, left, top, right, bottom, paint.mNativePaint); 749 if (hasModifier) nResetModifiers(mRenderer); 750 } 751 752 private native void nDrawRect(int renderer, float left, float top, float right, float bottom, 753 int paint); 754 755 @Override 756 public void drawRect(Rect r, Paint paint) { 757 drawRect(r.left, r.top, r.right, r.bottom, paint); 758 } 759 760 @Override 761 public void drawRect(RectF r, Paint paint) { 762 drawRect(r.left, r.top, r.right, r.bottom, paint); 763 } 764 765 @Override 766 public void drawRGB(int r, int g, int b) { 767 drawColor(0xFF000000 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 768 } 769 770 @Override 771 public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) { 772 // TODO: Implement 773 } 774 775 @Override 776 public void drawText(char[] text, int index, int count, float x, float y, Paint paint) { 777 if ((index | count | (index + count) | (text.length - index - count)) < 0) { 778 throw new IndexOutOfBoundsException(); 779 } 780 781 boolean hasModifier = setupModifiers(paint); 782 try { 783 nDrawText(mRenderer, text, index, count, x, y, paint.mBidiFlags, paint.mNativePaint); 784 } finally { 785 if (hasModifier) nResetModifiers(mRenderer); 786 } 787 } 788 789 private native void nDrawText(int renderer, char[] text, int index, int count, float x, float y, 790 int bidiFlags, int paint); 791 792 @Override 793 public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) { 794 boolean hasModifier = setupModifiers(paint); 795 try { 796 if (text instanceof String || text instanceof SpannedString || 797 text instanceof SpannableString) { 798 nDrawText(mRenderer, text.toString(), start, end, x, y, paint.mBidiFlags, 799 paint.mNativePaint); 800 } else if (text instanceof GraphicsOperations) { 801 ((GraphicsOperations) text).drawText(this, start, end, x, y, 802 paint); 803 } else { 804 char[] buf = TemporaryBuffer.obtain(end - start); 805 TextUtils.getChars(text, start, end, buf, 0); 806 nDrawText(mRenderer, buf, 0, end - start, x, y, paint.mBidiFlags, paint.mNativePaint); 807 TemporaryBuffer.recycle(buf); 808 } 809 } finally { 810 if (hasModifier) nResetModifiers(mRenderer); 811 } 812 } 813 814 @Override 815 public void drawText(String text, int start, int end, float x, float y, Paint paint) { 816 if ((start | end | (end - start) | (text.length() - end)) < 0) { 817 throw new IndexOutOfBoundsException(); 818 } 819 820 boolean hasModifier = setupModifiers(paint); 821 try { 822 nDrawText(mRenderer, text, start, end, x, y, paint.mBidiFlags, paint.mNativePaint); 823 } finally { 824 if (hasModifier) nResetModifiers(mRenderer); 825 } 826 } 827 828 private native void nDrawText(int renderer, String text, int start, int end, float x, float y, 829 int bidiFlags, int paint); 830 831 @Override 832 public void drawText(String text, float x, float y, Paint paint) { 833 boolean hasModifier = setupModifiers(paint); 834 try { 835 nDrawText(mRenderer, text, 0, text.length(), x, y, paint.mBidiFlags, 836 paint.mNativePaint); 837 } finally { 838 if (hasModifier) nResetModifiers(mRenderer); 839 } 840 } 841 842 @Override 843 public void drawTextOnPath(char[] text, int index, int count, Path path, float hOffset, 844 float vOffset, Paint paint) { 845 throw new UnsupportedOperationException(); 846 } 847 848 @Override 849 public void drawTextOnPath(String text, Path path, float hOffset, float vOffset, Paint paint) { 850 throw new UnsupportedOperationException(); 851 } 852 853 @Override 854 public void drawTextRun(char[] text, int index, int count, int contextIndex, int contextCount, 855 float x, float y, int dir, Paint paint) { 856 if ((index | count | text.length - index - count) < 0) { 857 throw new IndexOutOfBoundsException(); 858 } 859 if (dir != DIRECTION_LTR && dir != DIRECTION_RTL) { 860 throw new IllegalArgumentException("Unknown direction: " + dir); 861 } 862 863 boolean hasModifier = setupModifiers(paint); 864 try { 865 nDrawTextRun(mRenderer, text, index, count, contextIndex, contextCount, x, y, dir, 866 paint.mNativePaint); 867 } finally { 868 if (hasModifier) nResetModifiers(mRenderer); 869 } 870 } 871 872 private native void nDrawTextRun(int renderer, char[] text, int index, int count, 873 int contextIndex, int contextCount, float x, float y, int dir, int nativePaint); 874 875 @Override 876 public void drawTextRun(CharSequence text, int start, int end, int contextStart, int contextEnd, 877 float x, float y, int dir, Paint paint) { 878 if ((start | end | end - start | text.length() - end) < 0) { 879 throw new IndexOutOfBoundsException(); 880 } 881 882 boolean hasModifier = setupModifiers(paint); 883 try { 884 int flags = dir == 0 ? 0 : 1; 885 if (text instanceof String || text instanceof SpannedString || 886 text instanceof SpannableString) { 887 nDrawTextRun(mRenderer, text.toString(), start, end, contextStart, 888 contextEnd, x, y, flags, paint.mNativePaint); 889 } else if (text instanceof GraphicsOperations) { 890 ((GraphicsOperations) text).drawTextRun(this, start, end, 891 contextStart, contextEnd, x, y, flags, paint); 892 } else { 893 int contextLen = contextEnd - contextStart; 894 int len = end - start; 895 char[] buf = TemporaryBuffer.obtain(contextLen); 896 TextUtils.getChars(text, contextStart, contextEnd, buf, 0); 897 nDrawTextRun(mRenderer, buf, start - contextStart, len, 0, contextLen, 898 x, y, flags, paint.mNativePaint); 899 TemporaryBuffer.recycle(buf); 900 } 901 } finally { 902 if (hasModifier) nResetModifiers(mRenderer); 903 } 904 } 905 906 private native void nDrawTextRun(int renderer, String text, int start, int end, 907 int contextStart, int contextEnd, float x, float y, int flags, int nativePaint); 908 909 @Override 910 public void drawVertices(VertexMode mode, int vertexCount, float[] verts, int vertOffset, 911 float[] texs, int texOffset, int[] colors, int colorOffset, short[] indices, 912 int indexOffset, int indexCount, Paint paint) { 913 // TODO: Implement 914 } 915 916 private boolean setupModifiers(Paint paint) { 917 boolean hasModifier = false; 918 919 if (paint.hasShadow) { 920 nSetupShadow(mRenderer, paint.shadowRadius, paint.shadowDx, paint.shadowDy, 921 paint.shadowColor); 922 hasModifier = true; 923 } 924 925 final Shader shader = paint.getShader(); 926 if (shader != null) { 927 nSetupShader(mRenderer, shader.native_shader); 928 hasModifier = true; 929 } 930 931 final ColorFilter filter = paint.getColorFilter(); 932 if (filter != null) { 933 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 934 hasModifier = true; 935 } 936 937 return hasModifier; 938 } 939 940 private boolean setupColorFilter(Paint paint) { 941 final ColorFilter filter = paint.getColorFilter(); 942 if (filter != null) { 943 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 944 return true; 945 } 946 return false; 947 } 948 949 private native void nSetupShader(int renderer, int shader); 950 private native void nSetupColorFilter(int renderer, int colorFilter); 951 private native void nSetupShadow(int renderer, float radius, float dx, float dy, int color); 952 953 private native void nResetModifiers(int renderer); 954} 955