GLES20Canvas.java revision 7b5b6abf852c039983eded25ebe43a70fef5a4ab
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 /////////////////////////////////////////////////////////////////////////// 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 /** 75 * Creates a canvas to render directly on screen. 76 */ 77 GLES20Canvas(boolean translucent) { 78 this(false, translucent); 79 } 80 81 /** 82 * Creates a canvas to render into an FBO. 83 */ 84 GLES20Canvas(int layer, boolean translucent) { 85 mOpaque = !translucent; 86 mRenderer = nCreateLayerRenderer(layer); 87 setupFinalizer(); 88 } 89 90 protected GLES20Canvas(boolean record, boolean translucent) { 91 mOpaque = !translucent; 92 93 setupRenderer(record); 94 } 95 96 protected void setupRenderer(boolean record) { 97 if (record) { 98 mRenderer = nGetDisplayListRenderer(mRenderer); 99 } else { 100 mRenderer = nCreateRenderer(); 101 } 102 103 setupFinalizer(); 104 } 105 106 private void setupFinalizer() { 107 if (mRenderer == 0) { 108 throw new IllegalStateException("Could not create GLES20Canvas renderer"); 109 } else { 110 mFinalizer = CanvasFinalizer.getFinalizer(mFinalizer, mRenderer); 111 } 112 } 113 114 private static native int nCreateRenderer(); 115 private static native int nCreateLayerRenderer(int layer); 116 private static native int nGetDisplayListRenderer(int renderer); 117 private static native void nDestroyRenderer(int renderer); 118 119 private static class CanvasFinalizer { 120 int mRenderer; 121 122 // Factory method returns new instance if old one is null, or old instance 123 // otherwise, destroying native renderer along the way as necessary 124 static CanvasFinalizer getFinalizer(CanvasFinalizer oldFinalizer, int renderer) { 125 if (oldFinalizer == null) { 126 return new CanvasFinalizer(renderer); 127 } 128 oldFinalizer.replaceNativeObject(renderer); 129 return oldFinalizer; 130 } 131 132 private CanvasFinalizer(int renderer) { 133 mRenderer = renderer; 134 } 135 136 private void replaceNativeObject(int newRenderer) { 137 if (mRenderer != 0 && newRenderer != mRenderer) { 138 nDestroyRenderer(mRenderer); 139 } 140 mRenderer = newRenderer; 141 } 142 143 @Override 144 protected void finalize() throws Throwable { 145 try { 146 replaceNativeObject(0); 147 } finally { 148 super.finalize(); 149 } 150 } 151 } 152 153 /////////////////////////////////////////////////////////////////////////// 154 // Hardware layers 155 /////////////////////////////////////////////////////////////////////////// 156 157 static native int nCreateLayer(int width, int height, boolean isOpaque, int[] layerInfo); 158 static native void nResizeLayer(int layerId, int width, int height, int[] layerInfo); 159 static native void nDestroyLayer(int layerId); 160 static native void nDestroyLayerDeferred(int layerId); 161 162 /////////////////////////////////////////////////////////////////////////// 163 // Canvas management 164 /////////////////////////////////////////////////////////////////////////// 165 166 @Override 167 public boolean isOpaque() { 168 return mOpaque; 169 } 170 171 @Override 172 public int getWidth() { 173 return mWidth; 174 } 175 176 @Override 177 public int getHeight() { 178 return mHeight; 179 } 180 181 /////////////////////////////////////////////////////////////////////////// 182 // Setup 183 /////////////////////////////////////////////////////////////////////////// 184 185 @Override 186 public void setViewport(int width, int height) { 187 mWidth = width; 188 mHeight = height; 189 190 nSetViewport(mRenderer, width, height); 191 } 192 193 private static native void nSetViewport(int renderer, int width, int height); 194 195 /** 196 * @hide 197 */ 198 public static boolean preserveBackBuffer() { 199 return nPreserveBackBuffer(); 200 } 201 202 private static native boolean nPreserveBackBuffer(); 203 204 @Override 205 void onPreDraw(Rect dirty) { 206 if (dirty != null) { 207 nPrepareDirty(mRenderer, dirty.left, dirty.top, dirty.right, dirty.bottom, mOpaque); 208 } else { 209 nPrepare(mRenderer, mOpaque); 210 } 211 } 212 213 private static native void nPrepare(int renderer, boolean opaque); 214 private static native void nPrepareDirty(int renderer, int left, int top, int right, int bottom, 215 boolean opaque); 216 217 @Override 218 void onPostDraw() { 219 nFinish(mRenderer); 220 } 221 222 private static native void nFinish(int renderer); 223 224 @Override 225 public boolean callDrawGLFunction(int drawGLFunction) { 226 return nCallDrawGLFunction(mRenderer, drawGLFunction); 227 } 228 229 private static native boolean nCallDrawGLFunction(int renderer, int drawGLFunction); 230 231 /////////////////////////////////////////////////////////////////////////// 232 // Display list 233 /////////////////////////////////////////////////////////////////////////// 234 235 int getDisplayList() { 236 return nGetDisplayList(mRenderer); 237 } 238 239 private static native int nGetDisplayList(int renderer); 240 241 static void destroyDisplayList(int displayList) { 242 nDestroyDisplayList(displayList); 243 } 244 245 private static native void nDestroyDisplayList(int displayList); 246 247 @Override 248 public boolean drawDisplayList(DisplayList displayList, int width, int height, Rect dirty) { 249 return nDrawDisplayList(mRenderer, 250 ((GLES20DisplayList) displayList).mNativeDisplayList, width, height, dirty); 251 } 252 253 private static native boolean nDrawDisplayList(int renderer, int displayList, 254 int width, int height, Rect dirty); 255 256 /////////////////////////////////////////////////////////////////////////// 257 // Hardware layer 258 /////////////////////////////////////////////////////////////////////////// 259 260 void drawHardwareLayer(HardwareLayer layer, float x, float y, Paint paint) { 261 final GLES20Layer glLayer = (GLES20Layer) layer; 262 boolean hasColorFilter = paint != null && setupColorFilter(paint); 263 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 264 nDrawLayer(mRenderer, glLayer.getLayer(), x, y, nativePaint); 265 if (hasColorFilter) nResetModifiers(mRenderer); 266 } 267 268 private static native void nDrawLayer(int renderer, int layer, float x, float y, int paint); 269 270 void interrupt() { 271 nInterrupt(mRenderer); 272 } 273 274 void resume() { 275 nResume(mRenderer); 276 } 277 278 private static native void nInterrupt(int renderer); 279 private static native void nResume(int renderer); 280 281 /////////////////////////////////////////////////////////////////////////// 282 // Clipping 283 /////////////////////////////////////////////////////////////////////////// 284 285 @Override 286 public boolean clipPath(Path path) { 287 throw new UnsupportedOperationException(); 288 } 289 290 @Override 291 public boolean clipPath(Path path, Region.Op op) { 292 throw new UnsupportedOperationException(); 293 } 294 295 @Override 296 public boolean clipRect(float left, float top, float right, float bottom) { 297 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 298 } 299 300 private static native boolean nClipRect(int renderer, float left, float top, 301 float right, float bottom, int op); 302 303 @Override 304 public boolean clipRect(float left, float top, float right, float bottom, Region.Op op) { 305 return nClipRect(mRenderer, left, top, right, bottom, op.nativeInt); 306 } 307 308 @Override 309 public boolean clipRect(int left, int top, int right, int bottom) { 310 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 311 } 312 313 private static native boolean nClipRect(int renderer, int left, int top, int right, int bottom, 314 int op); 315 316 @Override 317 public boolean clipRect(Rect rect) { 318 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 319 Region.Op.INTERSECT.nativeInt); 320 } 321 322 @Override 323 public boolean clipRect(Rect rect, Region.Op op) { 324 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 325 } 326 327 @Override 328 public boolean clipRect(RectF rect) { 329 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 330 Region.Op.INTERSECT.nativeInt); 331 } 332 333 @Override 334 public boolean clipRect(RectF rect, Region.Op op) { 335 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 336 } 337 338 @Override 339 public boolean clipRegion(Region region) { 340 throw new UnsupportedOperationException(); 341 } 342 343 @Override 344 public boolean clipRegion(Region region, Region.Op op) { 345 throw new UnsupportedOperationException(); 346 } 347 348 @Override 349 public boolean getClipBounds(Rect bounds) { 350 return nGetClipBounds(mRenderer, bounds); 351 } 352 353 private static native boolean nGetClipBounds(int renderer, Rect bounds); 354 355 @Override 356 public boolean quickReject(float left, float top, float right, float bottom, EdgeType type) { 357 return nQuickReject(mRenderer, left, top, right, bottom, type.nativeInt); 358 } 359 360 private static native boolean nQuickReject(int renderer, float left, float top, 361 float right, float bottom, int edge); 362 363 @Override 364 public boolean quickReject(Path path, EdgeType type) { 365 throw new UnsupportedOperationException(); 366 } 367 368 @Override 369 public boolean quickReject(RectF rect, EdgeType type) { 370 return quickReject(rect.left, rect.top, rect.right, rect.bottom, type); 371 } 372 373 /////////////////////////////////////////////////////////////////////////// 374 // Transformations 375 /////////////////////////////////////////////////////////////////////////// 376 377 @Override 378 public void translate(float dx, float dy) { 379 if (dx != 0.0f || dy != 0.0f) nTranslate(mRenderer, dx, dy); 380 } 381 382 private static native void nTranslate(int renderer, float dx, float dy); 383 384 @Override 385 public void skew(float sx, float sy) { 386 nSkew(mRenderer, sx, sy); 387 } 388 389 private static native void nSkew(int renderer, float sx, float sy); 390 391 @Override 392 public void rotate(float degrees) { 393 nRotate(mRenderer, degrees); 394 } 395 396 private static 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 static 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 static native void nSetMatrix(int renderer, int matrix); 411 412 @Override 413 public int getNativeMatrix() { 414 return nGetMatrix(mRenderer); 415 } 416 417 private static native int nGetMatrix(int renderer); 418 419 @Override 420 public void getMatrix(Matrix matrix) { 421 nGetMatrix(mRenderer, matrix.native_instance); 422 } 423 424 private static 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 static 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 static 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 if (left < right && top < bottom) { 458 boolean hasColorFilter = paint != null && setupColorFilter(paint); 459 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 460 int count = nSaveLayer(mRenderer, left, top, right, bottom, nativePaint, saveFlags); 461 if (hasColorFilter) nResetModifiers(mRenderer); 462 return count; 463 } 464 return save(saveFlags); 465 } 466 467 private static native int nSaveLayer(int renderer, float left, float top, 468 float right, float bottom, int paint, int saveFlags); 469 470 @Override 471 public int saveLayerAlpha(RectF bounds, int alpha, int saveFlags) { 472 return saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom, 473 alpha, saveFlags); 474 } 475 476 @Override 477 public int saveLayerAlpha(float left, float top, float right, float bottom, int alpha, 478 int saveFlags) { 479 if (left < right && top < bottom) { 480 return nSaveLayerAlpha(mRenderer, left, top, right, bottom, alpha, saveFlags); 481 } 482 return save(saveFlags); 483 } 484 485 private static native int nSaveLayerAlpha(int renderer, float left, float top, float right, 486 float bottom, int alpha, int saveFlags); 487 488 @Override 489 public void restore() { 490 nRestore(mRenderer); 491 } 492 493 private static native void nRestore(int renderer); 494 495 @Override 496 public void restoreToCount(int saveCount) { 497 nRestoreToCount(mRenderer, saveCount); 498 } 499 500 private static native void nRestoreToCount(int renderer, int saveCount); 501 502 @Override 503 public int getSaveCount() { 504 return nGetSaveCount(mRenderer); 505 } 506 507 private static native int nGetSaveCount(int renderer); 508 509 /////////////////////////////////////////////////////////////////////////// 510 // Filtering 511 /////////////////////////////////////////////////////////////////////////// 512 513 @Override 514 public void setDrawFilter(DrawFilter filter) { 515 mFilter = filter; 516 } 517 518 @Override 519 public DrawFilter getDrawFilter() { 520 return mFilter; 521 } 522 523 /////////////////////////////////////////////////////////////////////////// 524 // Drawing 525 /////////////////////////////////////////////////////////////////////////// 526 527 @Override 528 public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, 529 Paint paint) { 530 boolean hasModifier = setupModifiers(paint); 531 nDrawArc(mRenderer, oval.left, oval.top, oval.right, oval.bottom, startAngle, sweepAngle, 532 useCenter, paint.mNativePaint); 533 if (hasModifier) nResetModifiers(mRenderer); 534 } 535 536 private static native void nDrawArc(int renderer, float left, float top, 537 float right, float bottom, float startAngle, float sweepAngle, 538 boolean useCenter, int paint); 539 540 @Override 541 public void drawARGB(int a, int r, int g, int b) { 542 drawColor((a & 0xFF) << 24 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 543 } 544 545 @Override 546 public void drawPatch(Bitmap bitmap, byte[] chunks, RectF dst, Paint paint) { 547 // Shaders are ignored when drawing patches 548 boolean hasColorFilter = paint != null && setupColorFilter(paint); 549 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 550 nDrawPatch(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, chunks, 551 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 552 if (hasColorFilter) nResetModifiers(mRenderer); 553 } 554 555 private static native void nDrawPatch(int renderer, int bitmap, byte[] buffer, byte[] chunks, 556 float left, float top, float right, float bottom, int paint); 557 558 @Override 559 public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) { 560 // Shaders are ignored when drawing bitmaps 561 boolean hasColorFilter = paint != null && setupColorFilter(paint); 562 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 563 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, nativePaint); 564 if (hasColorFilter) nResetModifiers(mRenderer); 565 } 566 567 private static native void nDrawBitmap( 568 int renderer, int bitmap, byte[] buffer, float left, float top, int paint); 569 570 @Override 571 public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) { 572 // Shaders are ignored when drawing bitmaps 573 boolean hasColorFilter = paint != null && setupColorFilter(paint); 574 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 575 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, 576 matrix.native_instance, nativePaint); 577 if (hasColorFilter) nResetModifiers(mRenderer); 578 } 579 580 private static native void nDrawBitmap(int renderer, int bitmap, byte[] buff, 581 int matrix, int paint); 582 583 @Override 584 public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) { 585 // Shaders are ignored when drawing bitmaps 586 boolean hasColorFilter = paint != null && setupColorFilter(paint); 587 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 588 589 int left, top, right, bottom; 590 if (src == null) { 591 left = top = 0; 592 right = bitmap.getWidth(); 593 bottom = bitmap.getHeight(); 594 } else { 595 left = src.left; 596 right = src.right; 597 top = src.top; 598 bottom = src.bottom; 599 } 600 601 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, right, bottom, 602 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 603 if (hasColorFilter) nResetModifiers(mRenderer); 604 } 605 606 @Override 607 public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) { 608 // Shaders are ignored when drawing bitmaps 609 boolean hasColorFilter = paint != null && setupColorFilter(paint); 610 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 611 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, src.left, src.top, src.right, 612 src.bottom, dst.left, dst.top, dst.right, dst.bottom, nativePaint); 613 if (hasColorFilter) nResetModifiers(mRenderer); 614 } 615 616 private static native void nDrawBitmap(int renderer, int bitmap, byte[] buffer, 617 float srcLeft, float srcTop, float srcRight, float srcBottom, 618 float left, float top, float right, float bottom, int paint); 619 620 @Override 621 public void drawBitmap(int[] colors, int offset, int stride, float x, float y, 622 int width, int height, boolean hasAlpha, Paint paint) { 623 // Shaders are ignored when drawing bitmaps 624 boolean hasColorFilter = paint != null && setupColorFilter(paint); 625 final Bitmap.Config config = hasAlpha ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; 626 final Bitmap b = Bitmap.createBitmap(colors, offset, stride, width, height, config); 627 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 628 nDrawBitmap(mRenderer, b.mNativeBitmap, b.mBuffer, x, y, nativePaint); 629 b.recycle(); 630 if (hasColorFilter) nResetModifiers(mRenderer); 631 } 632 633 @Override 634 public void drawBitmap(int[] colors, int offset, int stride, int x, int y, 635 int width, int height, boolean hasAlpha, Paint paint) { 636 // Shaders are ignored when drawing bitmaps 637 drawBitmap(colors, offset, stride, (float) x, (float) y, width, height, hasAlpha, paint); 638 } 639 640 @Override 641 public void drawBitmapMesh(Bitmap bitmap, int meshWidth, int meshHeight, float[] verts, 642 int vertOffset, int[] colors, int colorOffset, Paint paint) { 643 if (meshWidth < 0 || meshHeight < 0 || vertOffset < 0 || colorOffset < 0) { 644 throw new ArrayIndexOutOfBoundsException(); 645 } 646 647 if (meshWidth == 0 || meshHeight == 0) { 648 return; 649 } 650 651 final int count = (meshWidth + 1) * (meshHeight + 1); 652 checkRange(verts.length, vertOffset, count * 2); 653 654 // TODO: Colors are ignored for now 655 colors = null; 656 colorOffset = 0; 657 658 boolean hasColorFilter = paint != null && setupColorFilter(paint); 659 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 660 nDrawBitmapMesh(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, meshWidth, meshHeight, 661 verts, vertOffset, colors, colorOffset, nativePaint); 662 if (hasColorFilter) nResetModifiers(mRenderer); 663 } 664 665 private static native void nDrawBitmapMesh(int renderer, int bitmap, byte[] buffer, 666 int meshWidth, int meshHeight, float[] verts, int vertOffset, 667 int[] colors, int colorOffset, int paint); 668 669 @Override 670 public void drawCircle(float cx, float cy, float radius, Paint paint) { 671 boolean hasModifier = setupModifiers(paint); 672 nDrawCircle(mRenderer, cx, cy, radius, paint.mNativePaint); 673 if (hasModifier) nResetModifiers(mRenderer); 674 } 675 676 private static native void nDrawCircle(int renderer, float cx, float cy, 677 float radius, int paint); 678 679 @Override 680 public void drawColor(int color) { 681 drawColor(color, PorterDuff.Mode.SRC_OVER); 682 } 683 684 @Override 685 public void drawColor(int color, PorterDuff.Mode mode) { 686 nDrawColor(mRenderer, color, mode.nativeInt); 687 } 688 689 private static native void nDrawColor(int renderer, int color, int mode); 690 691 @Override 692 public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) { 693 mLine[0] = startX; 694 mLine[1] = startY; 695 mLine[2] = stopX; 696 mLine[3] = stopY; 697 drawLines(mLine, 0, 4, paint); 698 } 699 700 @Override 701 public void drawLines(float[] pts, int offset, int count, Paint paint) { 702 if ((offset | count) < 0 || offset + count > pts.length) { 703 throw new IllegalArgumentException("The lines array must contain 4 elements per line."); 704 } 705 boolean hasModifier = setupModifiers(paint); 706 nDrawLines(mRenderer, pts, offset, count, paint.mNativePaint); 707 if (hasModifier) nResetModifiers(mRenderer); 708 } 709 710 private static native void nDrawLines(int renderer, float[] points, 711 int offset, int count, int paint); 712 713 @Override 714 public void drawLines(float[] pts, Paint paint) { 715 drawLines(pts, 0, pts.length, paint); 716 } 717 718 @Override 719 public void drawOval(RectF oval, Paint paint) { 720 boolean hasModifier = setupModifiers(paint); 721 nDrawOval(mRenderer, oval.left, oval.top, oval.right, oval.bottom, paint.mNativePaint); 722 if (hasModifier) nResetModifiers(mRenderer); 723 } 724 725 private static native void nDrawOval(int renderer, float left, float top, 726 float right, float bottom, int paint); 727 728 @Override 729 public void drawPaint(Paint paint) { 730 final Rect r = mClipBounds; 731 nGetClipBounds(mRenderer, r); 732 drawRect(r.left, r.top, r.right, r.bottom, paint); 733 } 734 735 @Override 736 public void drawPath(Path path, Paint paint) { 737 boolean hasModifier = setupModifiers(paint); 738 if (path.isSimplePath) { 739 if (path.rects != null) { 740 nDrawRects(mRenderer, path.rects.mNativeRegion, paint.mNativePaint); 741 } 742 } else { 743 nDrawPath(mRenderer, path.mNativePath, paint.mNativePaint); 744 } 745 if (hasModifier) nResetModifiers(mRenderer); 746 } 747 748 private static native void nDrawPath(int renderer, int path, int paint); 749 private static native void nDrawRects(int renderer, int region, int paint); 750 751 @Override 752 public void drawPicture(Picture picture) { 753 throw new UnsupportedOperationException(); 754 } 755 756 @Override 757 public void drawPicture(Picture picture, Rect dst) { 758 throw new UnsupportedOperationException(); 759 } 760 761 @Override 762 public void drawPicture(Picture picture, RectF dst) { 763 throw new UnsupportedOperationException(); 764 } 765 766 @Override 767 public void drawPoint(float x, float y, Paint paint) { 768 mPoint[0] = x; 769 mPoint[1] = y; 770 drawPoints(mPoint, 0, 1, paint); 771 } 772 773 @Override 774 public void drawPoints(float[] pts, int offset, int count, Paint paint) { 775 // TODO: Implement 776 } 777 778 @Override 779 public void drawPoints(float[] pts, Paint paint) { 780 drawPoints(pts, 0, pts.length / 2, paint); 781 } 782 783 @Override 784 public void drawPosText(char[] text, int index, int count, float[] pos, Paint paint) { 785 // TODO: Implement 786 } 787 788 @Override 789 public void drawPosText(String text, float[] pos, Paint paint) { 790 // TODO: Implement 791 } 792 793 @Override 794 public void drawRect(float left, float top, float right, float bottom, Paint paint) { 795 boolean hasModifier = setupModifiers(paint); 796 nDrawRect(mRenderer, left, top, right, bottom, paint.mNativePaint); 797 if (hasModifier) nResetModifiers(mRenderer); 798 } 799 800 private static native void nDrawRect(int renderer, float left, float top, 801 float right, float bottom, int paint); 802 803 @Override 804 public void drawRect(Rect r, Paint paint) { 805 drawRect(r.left, r.top, r.right, r.bottom, paint); 806 } 807 808 @Override 809 public void drawRect(RectF r, Paint paint) { 810 drawRect(r.left, r.top, r.right, r.bottom, paint); 811 } 812 813 @Override 814 public void drawRGB(int r, int g, int b) { 815 drawColor(0xFF000000 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 816 } 817 818 @Override 819 public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) { 820 boolean hasModifier = setupModifiers(paint); 821 nDrawRoundRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 822 rx, ry, paint.mNativePaint); 823 if (hasModifier) nResetModifiers(mRenderer); 824 } 825 826 private static native void nDrawRoundRect(int renderer, float left, float top, 827 float right, float bottom, float rx, float y, int paint); 828 829 @Override 830 public void drawText(char[] text, int index, int count, float x, float y, Paint paint) { 831 if ((index | count | (index + count) | (text.length - index - count)) < 0) { 832 throw new IndexOutOfBoundsException(); 833 } 834 835 boolean hasModifier = setupModifiers(paint); 836 try { 837 nDrawText(mRenderer, text, index, count, x, y, paint.mBidiFlags, paint.mNativePaint); 838 } finally { 839 if (hasModifier) nResetModifiers(mRenderer); 840 } 841 } 842 843 private static native void nDrawText(int renderer, char[] text, int index, int count, 844 float x, float y, int bidiFlags, int paint); 845 846 @Override 847 public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) { 848 boolean hasModifier = setupModifiers(paint); 849 try { 850 if (text instanceof String || text instanceof SpannedString || 851 text instanceof SpannableString) { 852 nDrawText(mRenderer, text.toString(), start, end, x, y, paint.mBidiFlags, 853 paint.mNativePaint); 854 } else if (text instanceof GraphicsOperations) { 855 ((GraphicsOperations) text).drawText(this, start, end, x, y, 856 paint); 857 } else { 858 char[] buf = TemporaryBuffer.obtain(end - start); 859 TextUtils.getChars(text, start, end, buf, 0); 860 nDrawText(mRenderer, buf, 0, end - start, x, y, 861 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 static native void nDrawText(int renderer, String text, int start, int end, 884 float x, float y, 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 static 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 static 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 static native void nSetupShader(int renderer, int shader); 1005 private static native void nSetupColorFilter(int renderer, int colorFilter); 1006 private static native void nSetupShadow(int renderer, float radius, 1007 float dx, float dy, int color); 1008 1009 private static native void nResetModifiers(int renderer); 1010} 1011