GLES20Canvas.java revision 807daf7df615b60ce6fc41355aabe3aa353cebab
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 void releaseContext() { 224 if (mContextLocked) { 225 nReleaseContext(mRenderer); 226 mContextLocked = false; 227 } 228 } 229 230 private native void nReleaseContext(int renderer); 231 232 /////////////////////////////////////////////////////////////////////////// 233 // Display list 234 /////////////////////////////////////////////////////////////////////////// 235 236 int getDisplayList() { 237 return nGetDisplayList(mRenderer); 238 } 239 240 private native int nGetDisplayList(int renderer); 241 242 static void destroyDisplayList(int displayList) { 243 nDestroyDisplayList(displayList); 244 } 245 246 private static native void nDestroyDisplayList(int displayList); 247 248 @Override 249 public void drawDisplayList(DisplayList displayList) { 250 nDrawDisplayList(mRenderer, ((GLES20DisplayList) displayList).mNativeDisplayList); 251 } 252 253 private native void nDrawDisplayList(int renderer, int displayList); 254 255 /////////////////////////////////////////////////////////////////////////// 256 // Hardware layer 257 /////////////////////////////////////////////////////////////////////////// 258 259 void drawHardwareLayer(HardwareLayer layer, float x, float y, Paint paint) { 260 final GLES20Layer glLayer = (GLES20Layer) layer; 261 boolean hasColorFilter = paint != null && setupColorFilter(paint); 262 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 263 nDrawLayer(mRenderer, glLayer.getLayer(), x, y, nativePaint); 264 if (hasColorFilter) nResetModifiers(mRenderer); 265 } 266 267 private native void nDrawLayer(int renderer, int layer, float x, float y, int paint); 268 269 void interrupt() { 270 nInterrupt(mRenderer); 271 } 272 273 void resume() { 274 nResume(mRenderer); 275 } 276 277 private native void nInterrupt(int renderer); 278 private native void nResume(int renderer); 279 280 /////////////////////////////////////////////////////////////////////////// 281 // Clipping 282 /////////////////////////////////////////////////////////////////////////// 283 284 @Override 285 public boolean clipPath(Path path) { 286 throw new UnsupportedOperationException(); 287 } 288 289 @Override 290 public boolean clipPath(Path path, Region.Op op) { 291 throw new UnsupportedOperationException(); 292 } 293 294 @Override 295 public boolean clipRect(float left, float top, float right, float bottom) { 296 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 297 } 298 299 private native boolean nClipRect(int renderer, float left, float top, 300 float right, float bottom, int op); 301 302 @Override 303 public boolean clipRect(float left, float top, float right, float bottom, Region.Op op) { 304 return nClipRect(mRenderer, left, top, right, bottom, op.nativeInt); 305 } 306 307 @Override 308 public boolean clipRect(int left, int top, int right, int bottom) { 309 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 310 } 311 312 private native boolean nClipRect(int renderer, int left, int top, int right, int bottom, int op); 313 314 @Override 315 public boolean clipRect(Rect rect) { 316 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 317 Region.Op.INTERSECT.nativeInt); 318 } 319 320 @Override 321 public boolean clipRect(Rect rect, Region.Op op) { 322 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 323 } 324 325 @Override 326 public boolean clipRect(RectF rect) { 327 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 328 Region.Op.INTERSECT.nativeInt); 329 } 330 331 @Override 332 public boolean clipRect(RectF rect, Region.Op op) { 333 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 334 } 335 336 @Override 337 public boolean clipRegion(Region region) { 338 throw new UnsupportedOperationException(); 339 } 340 341 @Override 342 public boolean clipRegion(Region region, Region.Op op) { 343 throw new UnsupportedOperationException(); 344 } 345 346 @Override 347 public boolean getClipBounds(Rect bounds) { 348 return nGetClipBounds(mRenderer, bounds); 349 } 350 351 private native boolean nGetClipBounds(int renderer, Rect bounds); 352 353 @Override 354 public boolean quickReject(float left, float top, float right, float bottom, EdgeType type) { 355 return nQuickReject(mRenderer, left, top, right, bottom, type.nativeInt); 356 } 357 358 private native boolean nQuickReject(int renderer, float left, float top, 359 float right, float bottom, int edge); 360 361 @Override 362 public boolean quickReject(Path path, EdgeType type) { 363 throw new UnsupportedOperationException(); 364 } 365 366 @Override 367 public boolean quickReject(RectF rect, EdgeType type) { 368 return quickReject(rect.left, rect.top, rect.right, rect.bottom, type); 369 } 370 371 /////////////////////////////////////////////////////////////////////////// 372 // Transformations 373 /////////////////////////////////////////////////////////////////////////// 374 375 @Override 376 public void translate(float dx, float dy) { 377 if (dx != 0.0f || dy != 0.0f) nTranslate(mRenderer, dx, dy); 378 } 379 380 private native void nTranslate(int renderer, float dx, float dy); 381 382 @Override 383 public void skew(float sx, float sy) { 384 nSkew(mRenderer, sx, sy); 385 } 386 387 private native void nSkew(int renderer, float sx, float sy); 388 389 @Override 390 public void rotate(float degrees) { 391 nRotate(mRenderer, degrees); 392 } 393 394 private native void nRotate(int renderer, float degrees); 395 396 @Override 397 public void scale(float sx, float sy) { 398 nScale(mRenderer, sx, sy); 399 } 400 401 private native void nScale(int renderer, float sx, float sy); 402 403 @Override 404 public void setMatrix(Matrix matrix) { 405 nSetMatrix(mRenderer, matrix.native_instance); 406 } 407 408 private native void nSetMatrix(int renderer, int matrix); 409 410 @Override 411 public int getNativeMatrix() { 412 return nGetMatrix(mRenderer); 413 } 414 415 private native int nGetMatrix(int renderer); 416 417 @Override 418 public void getMatrix(Matrix matrix) { 419 nGetMatrix(mRenderer, matrix.native_instance); 420 } 421 422 private native void nGetMatrix(int renderer, int matrix); 423 424 @Override 425 public void concat(Matrix matrix) { 426 nConcatMatrix(mRenderer, matrix.native_instance); 427 } 428 429 private native void nConcatMatrix(int renderer, int matrix); 430 431 /////////////////////////////////////////////////////////////////////////// 432 // State management 433 /////////////////////////////////////////////////////////////////////////// 434 435 @Override 436 public int save() { 437 return nSave(mRenderer, Canvas.CLIP_SAVE_FLAG | Canvas.MATRIX_SAVE_FLAG); 438 } 439 440 @Override 441 public int save(int saveFlags) { 442 return nSave(mRenderer, saveFlags); 443 } 444 445 private native int nSave(int renderer, int flags); 446 447 @Override 448 public int saveLayer(RectF bounds, Paint paint, int saveFlags) { 449 return saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom, paint, saveFlags); 450 } 451 452 @Override 453 public int saveLayer(float left, float top, float right, float bottom, Paint paint, 454 int saveFlags) { 455 boolean hasColorFilter = paint != null && setupColorFilter(paint); 456 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 457 int count = nSaveLayer(mRenderer, left, top, right, bottom, nativePaint, saveFlags); 458 if (hasColorFilter) nResetModifiers(mRenderer); 459 return count; 460 } 461 462 private native int nSaveLayer(int renderer, float left, float top, float right, float bottom, 463 int paint, int saveFlags); 464 465 @Override 466 public int saveLayerAlpha(RectF bounds, int alpha, int saveFlags) { 467 return saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom, 468 alpha, saveFlags); 469 } 470 471 @Override 472 public int saveLayerAlpha(float left, float top, float right, float bottom, int alpha, 473 int saveFlags) { 474 return nSaveLayerAlpha(mRenderer, left, top, right, bottom, alpha, saveFlags); 475 } 476 477 private native int nSaveLayerAlpha(int renderer, float left, float top, float right, 478 float bottom, int alpha, int saveFlags); 479 480 @Override 481 public void restore() { 482 nRestore(mRenderer); 483 } 484 485 private native void nRestore(int renderer); 486 487 @Override 488 public void restoreToCount(int saveCount) { 489 nRestoreToCount(mRenderer, saveCount); 490 } 491 492 private native void nRestoreToCount(int renderer, int saveCount); 493 494 @Override 495 public int getSaveCount() { 496 return nGetSaveCount(mRenderer); 497 } 498 499 private native int nGetSaveCount(int renderer); 500 501 /////////////////////////////////////////////////////////////////////////// 502 // Filtering 503 /////////////////////////////////////////////////////////////////////////// 504 505 @Override 506 public void setDrawFilter(DrawFilter filter) { 507 mFilter = filter; 508 } 509 510 @Override 511 public DrawFilter getDrawFilter() { 512 return mFilter; 513 } 514 515 /////////////////////////////////////////////////////////////////////////// 516 // Drawing 517 /////////////////////////////////////////////////////////////////////////// 518 519 @Override 520 public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, 521 Paint paint) { 522 throw new UnsupportedOperationException(); 523 } 524 525 @Override 526 public void drawARGB(int a, int r, int g, int b) { 527 drawColor((a & 0xFF) << 24 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 528 } 529 530 @Override 531 public void drawPatch(Bitmap bitmap, byte[] chunks, RectF dst, Paint paint) { 532 // Shaders are ignored when drawing patches 533 boolean hasColorFilter = paint != null && setupColorFilter(paint); 534 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 535 nDrawPatch(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, chunks, 536 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 537 if (hasColorFilter) nResetModifiers(mRenderer); 538 } 539 540 private native void nDrawPatch(int renderer, int bitmap, byte[] buffer, byte[] chunks, 541 float left, float top, float right, float bottom, int paint); 542 543 @Override 544 public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) { 545 // Shaders are ignored when drawing bitmaps 546 boolean hasColorFilter = paint != null && setupColorFilter(paint); 547 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 548 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, nativePaint); 549 if (hasColorFilter) nResetModifiers(mRenderer); 550 } 551 552 private native void nDrawBitmap( 553 int renderer, int bitmap, byte[] buffer, float left, float top, int paint); 554 555 @Override 556 public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) { 557 // Shaders are ignored when drawing bitmaps 558 boolean hasColorFilter = paint != null && setupColorFilter(paint); 559 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 560 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, 561 matrix.native_instance, nativePaint); 562 if (hasColorFilter) nResetModifiers(mRenderer); 563 } 564 565 private native void nDrawBitmap(int renderer, int bitmap, byte[] buff, int matrix, int paint); 566 567 @Override 568 public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) { 569 // Shaders are ignored when drawing bitmaps 570 boolean hasColorFilter = paint != null && setupColorFilter(paint); 571 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 572 573 int left, top, right, bottom; 574 if (src == null) { 575 left = top = 0; 576 right = bitmap.getWidth(); 577 bottom = bitmap.getHeight(); 578 } else { 579 left = src.left; 580 right = src.right; 581 top = src.top; 582 bottom = src.bottom; 583 } 584 585 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, right, bottom, 586 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 587 if (hasColorFilter) nResetModifiers(mRenderer); 588 } 589 590 @Override 591 public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) { 592 // Shaders are ignored when drawing bitmaps 593 boolean hasColorFilter = paint != null && setupColorFilter(paint); 594 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 595 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, src.left, src.top, src.right, 596 src.bottom, dst.left, dst.top, dst.right, dst.bottom, nativePaint); 597 if (hasColorFilter) nResetModifiers(mRenderer); 598 } 599 600 private native void nDrawBitmap(int renderer, int bitmap, byte[] buffer, 601 float srcLeft, float srcTop, float srcRight, float srcBottom, 602 float left, float top, float right, float bottom, int paint); 603 604 @Override 605 public void drawBitmap(int[] colors, int offset, int stride, float x, float y, 606 int width, int height, boolean hasAlpha, Paint paint) { 607 // Shaders are ignored when drawing bitmaps 608 boolean hasColorFilter = paint != null && setupColorFilter(paint); 609 final Bitmap.Config config = hasAlpha ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; 610 final Bitmap b = Bitmap.createBitmap(colors, offset, stride, width, height, config); 611 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 612 nDrawBitmap(mRenderer, b.mNativeBitmap, b.mBuffer, x, y, nativePaint); 613 b.recycle(); 614 if (hasColorFilter) nResetModifiers(mRenderer); 615 } 616 617 @Override 618 public void drawBitmap(int[] colors, int offset, int stride, int x, int y, 619 int width, int height, boolean hasAlpha, Paint paint) { 620 // Shaders are ignored when drawing bitmaps 621 drawBitmap(colors, offset, stride, (float) x, (float) y, width, height, hasAlpha, paint); 622 } 623 624 @Override 625 public void drawBitmapMesh(Bitmap bitmap, int meshWidth, int meshHeight, float[] verts, 626 int vertOffset, int[] colors, int colorOffset, Paint paint) { 627 // TODO: Implement 628 } 629 630 @Override 631 public void drawCircle(float cx, float cy, float radius, Paint paint) { 632 throw new UnsupportedOperationException(); 633 } 634 635 @Override 636 public void drawColor(int color) { 637 drawColor(color, PorterDuff.Mode.SRC_OVER); 638 } 639 640 @Override 641 public void drawColor(int color, PorterDuff.Mode mode) { 642 nDrawColor(mRenderer, color, mode.nativeInt); 643 } 644 645 private native void nDrawColor(int renderer, int color, int mode); 646 647 @Override 648 public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) { 649 mLine[0] = startX; 650 mLine[1] = startY; 651 mLine[2] = stopX; 652 mLine[3] = stopY; 653 drawLines(mLine, 0, 4, paint); 654 } 655 656 @Override 657 public void drawLines(float[] pts, int offset, int count, Paint paint) { 658 if ((offset | count) < 0 || offset + count > pts.length) { 659 throw new IllegalArgumentException("The lines array must contain 4 elements per line."); 660 } 661 boolean hasModifier = setupModifiers(paint); 662 nDrawLines(mRenderer, pts, offset, count, paint.mNativePaint); 663 if (hasModifier) nResetModifiers(mRenderer); 664 } 665 666 private native void nDrawLines(int renderer, float[] points, int offset, int count, int paint); 667 668 @Override 669 public void drawLines(float[] pts, Paint paint) { 670 drawLines(pts, 0, pts.length, paint); 671 } 672 673 @Override 674 public void drawOval(RectF oval, Paint paint) { 675 throw new UnsupportedOperationException(); 676 } 677 678 @Override 679 public void drawPaint(Paint paint) { 680 final Rect r = mClipBounds; 681 nGetClipBounds(mRenderer, r); 682 drawRect(r.left, r.top, r.right, r.bottom, paint); 683 } 684 685 @Override 686 public void drawPath(Path path, Paint paint) { 687 boolean hasModifier = setupModifiers(paint); 688 if (path.isSimplePath) { 689 if (path.rects != null) { 690 nDrawRects(mRenderer, path.rects.mNativeRegion, paint.mNativePaint); 691 } 692 } else { 693 nDrawPath(mRenderer, path.mNativePath, paint.mNativePaint); 694 } 695 if (hasModifier) nResetModifiers(mRenderer); 696 } 697 698 private native void nDrawPath(int renderer, int path, int paint); 699 private native void nDrawRects(int renderer, int region, int paint); 700 701 @Override 702 public void drawPicture(Picture picture) { 703 throw new UnsupportedOperationException(); 704 } 705 706 @Override 707 public void drawPicture(Picture picture, Rect dst) { 708 throw new UnsupportedOperationException(); 709 } 710 711 @Override 712 public void drawPicture(Picture picture, RectF dst) { 713 throw new UnsupportedOperationException(); 714 } 715 716 @Override 717 public void drawPoint(float x, float y, Paint paint) { 718 mPoint[0] = x; 719 mPoint[1] = y; 720 drawPoints(mPoint, 0, 1, paint); 721 } 722 723 @Override 724 public void drawPoints(float[] pts, int offset, int count, Paint paint) { 725 // TODO: Implement 726 } 727 728 @Override 729 public void drawPoints(float[] pts, Paint paint) { 730 drawPoints(pts, 0, pts.length / 2, paint); 731 } 732 733 @Override 734 public void drawPosText(char[] text, int index, int count, float[] pos, Paint paint) { 735 throw new UnsupportedOperationException(); 736 } 737 738 @Override 739 public void drawPosText(String text, float[] pos, Paint paint) { 740 throw new UnsupportedOperationException(); 741 } 742 743 @Override 744 public void drawRect(float left, float top, float right, float bottom, Paint paint) { 745 boolean hasModifier = setupModifiers(paint); 746 nDrawRect(mRenderer, left, top, right, bottom, paint.mNativePaint); 747 if (hasModifier) nResetModifiers(mRenderer); 748 } 749 750 private native void nDrawRect(int renderer, float left, float top, float right, float bottom, 751 int paint); 752 753 @Override 754 public void drawRect(Rect r, Paint paint) { 755 drawRect(r.left, r.top, r.right, r.bottom, paint); 756 } 757 758 @Override 759 public void drawRect(RectF r, Paint paint) { 760 drawRect(r.left, r.top, r.right, r.bottom, paint); 761 } 762 763 @Override 764 public void drawRGB(int r, int g, int b) { 765 drawColor(0xFF000000 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 766 } 767 768 @Override 769 public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) { 770 // TODO: Implement 771 } 772 773 @Override 774 public void drawText(char[] text, int index, int count, float x, float y, Paint paint) { 775 if ((index | count | (index + count) | (text.length - index - count)) < 0) { 776 throw new IndexOutOfBoundsException(); 777 } 778 779 boolean hasModifier = setupModifiers(paint); 780 try { 781 nDrawText(mRenderer, text, index, count, x, y, paint.mBidiFlags, paint.mNativePaint); 782 } finally { 783 if (hasModifier) nResetModifiers(mRenderer); 784 } 785 } 786 787 private native void nDrawText(int renderer, char[] text, int index, int count, float x, float y, 788 int bidiFlags, int paint); 789 790 @Override 791 public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) { 792 boolean hasModifier = setupModifiers(paint); 793 try { 794 if (text instanceof String || text instanceof SpannedString || 795 text instanceof SpannableString) { 796 nDrawText(mRenderer, text.toString(), start, end, x, y, paint.mBidiFlags, 797 paint.mNativePaint); 798 } else if (text instanceof GraphicsOperations) { 799 ((GraphicsOperations) text).drawText(this, start, end, x, y, 800 paint); 801 } else { 802 char[] buf = TemporaryBuffer.obtain(end - start); 803 TextUtils.getChars(text, start, end, buf, 0); 804 nDrawText(mRenderer, buf, 0, end - start, x, y, paint.mBidiFlags, paint.mNativePaint); 805 TemporaryBuffer.recycle(buf); 806 } 807 } finally { 808 if (hasModifier) nResetModifiers(mRenderer); 809 } 810 } 811 812 @Override 813 public void drawText(String text, int start, int end, float x, float y, Paint paint) { 814 if ((start | end | (end - start) | (text.length() - end)) < 0) { 815 throw new IndexOutOfBoundsException(); 816 } 817 818 boolean hasModifier = setupModifiers(paint); 819 try { 820 nDrawText(mRenderer, text, start, end, x, y, paint.mBidiFlags, paint.mNativePaint); 821 } finally { 822 if (hasModifier) nResetModifiers(mRenderer); 823 } 824 } 825 826 private native void nDrawText(int renderer, String text, int start, int end, float x, float y, 827 int bidiFlags, int paint); 828 829 @Override 830 public void drawText(String text, float x, float y, Paint paint) { 831 boolean hasModifier = setupModifiers(paint); 832 try { 833 nDrawText(mRenderer, text, 0, text.length(), x, y, paint.mBidiFlags, 834 paint.mNativePaint); 835 } finally { 836 if (hasModifier) nResetModifiers(mRenderer); 837 } 838 } 839 840 @Override 841 public void drawTextOnPath(char[] text, int index, int count, Path path, float hOffset, 842 float vOffset, Paint paint) { 843 throw new UnsupportedOperationException(); 844 } 845 846 @Override 847 public void drawTextOnPath(String text, Path path, float hOffset, float vOffset, Paint paint) { 848 throw new UnsupportedOperationException(); 849 } 850 851 @Override 852 public void drawTextRun(char[] text, int index, int count, int contextIndex, int contextCount, 853 float x, float y, int dir, Paint paint) { 854 if ((index | count | text.length - index - count) < 0) { 855 throw new IndexOutOfBoundsException(); 856 } 857 if (dir != DIRECTION_LTR && dir != DIRECTION_RTL) { 858 throw new IllegalArgumentException("Unknown direction: " + dir); 859 } 860 861 boolean hasModifier = setupModifiers(paint); 862 try { 863 nDrawTextRun(mRenderer, text, index, count, contextIndex, contextCount, x, y, dir, 864 paint.mNativePaint); 865 } finally { 866 if (hasModifier) nResetModifiers(mRenderer); 867 } 868 } 869 870 private native void nDrawTextRun(int renderer, char[] text, int index, int count, 871 int contextIndex, int contextCount, float x, float y, int dir, int nativePaint); 872 873 @Override 874 public void drawTextRun(CharSequence text, int start, int end, int contextStart, int contextEnd, 875 float x, float y, int dir, Paint paint) { 876 if ((start | end | end - start | text.length() - end) < 0) { 877 throw new IndexOutOfBoundsException(); 878 } 879 880 boolean hasModifier = setupModifiers(paint); 881 try { 882 int flags = dir == 0 ? 0 : 1; 883 if (text instanceof String || text instanceof SpannedString || 884 text instanceof SpannableString) { 885 nDrawTextRun(mRenderer, text.toString(), start, end, contextStart, 886 contextEnd, x, y, flags, paint.mNativePaint); 887 } else if (text instanceof GraphicsOperations) { 888 ((GraphicsOperations) text).drawTextRun(this, start, end, 889 contextStart, contextEnd, x, y, flags, paint); 890 } else { 891 int contextLen = contextEnd - contextStart; 892 int len = end - start; 893 char[] buf = TemporaryBuffer.obtain(contextLen); 894 TextUtils.getChars(text, contextStart, contextEnd, buf, 0); 895 nDrawTextRun(mRenderer, buf, start - contextStart, len, 0, contextLen, 896 x, y, flags, paint.mNativePaint); 897 TemporaryBuffer.recycle(buf); 898 } 899 } finally { 900 if (hasModifier) nResetModifiers(mRenderer); 901 } 902 } 903 904 private native void nDrawTextRun(int renderer, String text, int start, int end, 905 int contextStart, int contextEnd, float x, float y, int flags, int nativePaint); 906 907 @Override 908 public void drawVertices(VertexMode mode, int vertexCount, float[] verts, int vertOffset, 909 float[] texs, int texOffset, int[] colors, int colorOffset, short[] indices, 910 int indexOffset, int indexCount, Paint paint) { 911 // TODO: Implement 912 } 913 914 private boolean setupModifiers(Paint paint) { 915 boolean hasModifier = false; 916 917 if (paint.hasShadow) { 918 nSetupShadow(mRenderer, paint.shadowRadius, paint.shadowDx, paint.shadowDy, 919 paint.shadowColor); 920 hasModifier = true; 921 } 922 923 final Shader shader = paint.getShader(); 924 if (shader != null) { 925 nSetupShader(mRenderer, shader.native_shader); 926 hasModifier = true; 927 } 928 929 final ColorFilter filter = paint.getColorFilter(); 930 if (filter != null) { 931 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 932 hasModifier = true; 933 } 934 935 return hasModifier; 936 } 937 938 private boolean setupColorFilter(Paint paint) { 939 final ColorFilter filter = paint.getColorFilter(); 940 if (filter != null) { 941 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 942 return true; 943 } 944 return false; 945 } 946 947 private native void nSetupShader(int renderer, int shader); 948 private native void nSetupColorFilter(int renderer, int colorFilter); 949 private native void nSetupShadow(int renderer, float radius, float dx, float dy, int color); 950 951 private native void nResetModifiers(int renderer); 952} 953