GLES20Canvas.java revision e5e0c50f7dfaccc220725c5595080e921ffda1e4
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.SurfaceTexture; 33import android.graphics.TemporaryBuffer; 34import android.text.GraphicsOperations; 35import android.text.SpannableString; 36import android.text.SpannedString; 37import android.text.TextUtils; 38 39/** 40 * An implementation of Canvas on top of OpenGL ES 2.0. 41 */ 42class GLES20Canvas extends HardwareCanvas { 43 // Must match modifiers used in the JNI layer 44 private static final int MODIFIER_NONE = 0; 45 private static final int MODIFIER_SHADOW = 1; 46 private static final int MODIFIER_SHADER = 2; 47 private static final int MODIFIER_COLOR_FILTER = 4; 48 49 private final boolean mOpaque; 50 private int mRenderer; 51 52 // The native renderer will be destroyed when this object dies. 53 // DO NOT overwrite this reference once it is set. 54 private CanvasFinalizer mFinalizer; 55 56 private int mWidth; 57 private int mHeight; 58 59 private final float[] mPoint = new float[2]; 60 private final float[] mLine = new float[4]; 61 62 private final Rect mClipBounds = new Rect(); 63 64 private DrawFilter mFilter; 65 66 /////////////////////////////////////////////////////////////////////////// 67 // JNI 68 /////////////////////////////////////////////////////////////////////////// 69 70 private static native boolean nIsAvailable(); 71 private static boolean sIsAvailable = nIsAvailable(); 72 73 static boolean isAvailable() { 74 return sIsAvailable; 75 } 76 77 /////////////////////////////////////////////////////////////////////////// 78 // Constructors 79 /////////////////////////////////////////////////////////////////////////// 80 81 /** 82 * Creates a canvas to render directly on screen. 83 */ 84 GLES20Canvas(boolean translucent) { 85 this(false, translucent); 86 } 87 88 /** 89 * Creates a canvas to render into an FBO. 90 */ 91 GLES20Canvas(int layer, boolean translucent) { 92 mOpaque = !translucent; 93 mRenderer = nCreateLayerRenderer(layer); 94 setupFinalizer(); 95 } 96 97 protected GLES20Canvas(boolean record, boolean translucent) { 98 mOpaque = !translucent; 99 100 setupRenderer(record); 101 } 102 103 protected void setupRenderer(boolean record) { 104 if (record) { 105 mRenderer = nGetDisplayListRenderer(mRenderer); 106 } else { 107 mRenderer = nCreateRenderer(); 108 } 109 110 setupFinalizer(); 111 } 112 113 private void setupFinalizer() { 114 if (mRenderer == 0) { 115 throw new IllegalStateException("Could not create GLES20Canvas renderer"); 116 } else { 117 mFinalizer = CanvasFinalizer.getFinalizer(mFinalizer, mRenderer); 118 } 119 } 120 121 private static native int nCreateRenderer(); 122 private static native int nCreateLayerRenderer(int layer); 123 private static native int nGetDisplayListRenderer(int renderer); 124 private static native void nDestroyRenderer(int renderer); 125 126 private static class CanvasFinalizer { 127 int mRenderer; 128 129 // Factory method returns new instance if old one is null, or old instance 130 // otherwise, destroying native renderer along the way as necessary 131 static CanvasFinalizer getFinalizer(CanvasFinalizer oldFinalizer, int renderer) { 132 if (oldFinalizer == null) { 133 return new CanvasFinalizer(renderer); 134 } 135 oldFinalizer.replaceNativeObject(renderer); 136 return oldFinalizer; 137 } 138 139 private CanvasFinalizer(int renderer) { 140 mRenderer = renderer; 141 } 142 143 private void replaceNativeObject(int newRenderer) { 144 if (mRenderer != 0 && newRenderer != mRenderer) { 145 nDestroyRenderer(mRenderer); 146 } 147 mRenderer = newRenderer; 148 } 149 150 @Override 151 protected void finalize() throws Throwable { 152 try { 153 replaceNativeObject(0); 154 } finally { 155 super.finalize(); 156 } 157 } 158 } 159 160 /////////////////////////////////////////////////////////////////////////// 161 // Hardware layers 162 /////////////////////////////////////////////////////////////////////////// 163 164 static native int nCreateTextureLayer(int[] layerInfo); 165 static native int nCreateLayer(int width, int height, boolean isOpaque, int[] layerInfo); 166 static native void nResizeLayer(int layerId, int width, int height, int[] layerInfo); 167 static native void nUpdateTextureLayer(int layerId, int width, int height, SurfaceTexture surface); 168 static native void nDestroyLayer(int layerId); 169 static native void nDestroyLayerDeferred(int layerId); 170 static native boolean nCopyLayer(int layerId, int bitmap); 171 172 /////////////////////////////////////////////////////////////////////////// 173 // Canvas management 174 /////////////////////////////////////////////////////////////////////////// 175 176 @Override 177 public boolean isOpaque() { 178 return mOpaque; 179 } 180 181 @Override 182 public int getWidth() { 183 return mWidth; 184 } 185 186 @Override 187 public int getHeight() { 188 return mHeight; 189 } 190 191 /////////////////////////////////////////////////////////////////////////// 192 // Setup 193 /////////////////////////////////////////////////////////////////////////// 194 195 @Override 196 public void setViewport(int width, int height) { 197 mWidth = width; 198 mHeight = height; 199 200 nSetViewport(mRenderer, width, height); 201 } 202 203 private static native void nSetViewport(int renderer, int width, int height); 204 205 /** 206 * Preserves the back buffer of the current surface after a buffer swap. 207 * Calling this method sets the EGL_SWAP_BEHAVIOR attribute of the current 208 * surface to EGL_BUFFER_PRESERVED. Calling this method requires an EGL 209 * config that supports EGL_SWAP_BEHAVIOR_PRESERVED_BIT. 210 * 211 * @return True if the swap behavior was successfully changed, 212 * false otherwise. 213 * 214 * @hide 215 */ 216 public static boolean preserveBackBuffer() { 217 return nPreserveBackBuffer(); 218 } 219 220 private static native boolean nPreserveBackBuffer(); 221 222 /** 223 * Indicates whether the current surface preserves its back buffer 224 * after a buffer swap. 225 * 226 * @return True, if the surface's EGL_SWAP_BEHAVIOR is EGL_BUFFER_PRESERVED, 227 * false otherwise 228 * 229 * @hide 230 */ 231 public static boolean isBackBufferPreserved() { 232 return nIsBackBufferPreserved(); 233 } 234 235 private static native boolean nIsBackBufferPreserved(); 236 237 @Override 238 void onPreDraw(Rect dirty) { 239 if (dirty != null) { 240 nPrepareDirty(mRenderer, dirty.left, dirty.top, dirty.right, dirty.bottom, mOpaque); 241 } else { 242 nPrepare(mRenderer, mOpaque); 243 } 244 } 245 246 private static native void nPrepare(int renderer, boolean opaque); 247 private static native void nPrepareDirty(int renderer, int left, int top, int right, int bottom, 248 boolean opaque); 249 250 @Override 251 void onPostDraw() { 252 nFinish(mRenderer); 253 } 254 255 private static native void nFinish(int renderer); 256 257 @Override 258 public boolean callDrawGLFunction(int drawGLFunction) { 259 return nCallDrawGLFunction(mRenderer, drawGLFunction); 260 } 261 262 private static native boolean nCallDrawGLFunction(int renderer, int drawGLFunction); 263 264 /////////////////////////////////////////////////////////////////////////// 265 // Display list 266 /////////////////////////////////////////////////////////////////////////// 267 268 int getDisplayList() { 269 return nGetDisplayList(mRenderer); 270 } 271 272 private static native int nGetDisplayList(int renderer); 273 274 static void destroyDisplayList(int displayList) { 275 nDestroyDisplayList(displayList); 276 } 277 278 private static native void nDestroyDisplayList(int displayList); 279 280 @Override 281 public boolean drawDisplayList(DisplayList displayList, int width, int height, Rect dirty) { 282 return nDrawDisplayList(mRenderer, 283 ((GLES20DisplayList) displayList).mNativeDisplayList, width, height, dirty); 284 } 285 286 private static native boolean nDrawDisplayList(int renderer, int displayList, 287 int width, int height, Rect dirty); 288 289 @Override 290 void outputDisplayList(DisplayList displayList) { 291 nOutputDisplayList(mRenderer, ((GLES20DisplayList) displayList).mNativeDisplayList); 292 } 293 294 private static native void nOutputDisplayList(int renderer, int displayList); 295 296 /////////////////////////////////////////////////////////////////////////// 297 // Hardware layer 298 /////////////////////////////////////////////////////////////////////////// 299 300 void drawHardwareLayer(HardwareLayer layer, float x, float y, Paint paint) { 301 final GLES20Layer glLayer = (GLES20Layer) layer; 302 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 303 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 304 nDrawLayer(mRenderer, glLayer.getLayer(), x, y, nativePaint); 305 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 306 } 307 308 private static native void nDrawLayer(int renderer, int layer, float x, float y, int paint); 309 310 void interrupt() { 311 nInterrupt(mRenderer); 312 } 313 314 void resume() { 315 nResume(mRenderer); 316 } 317 318 private static native void nInterrupt(int renderer); 319 private static native void nResume(int renderer); 320 321 /////////////////////////////////////////////////////////////////////////// 322 // Clipping 323 /////////////////////////////////////////////////////////////////////////// 324 325 @Override 326 public boolean clipPath(Path path) { 327 throw new UnsupportedOperationException(); 328 } 329 330 @Override 331 public boolean clipPath(Path path, Region.Op op) { 332 throw new UnsupportedOperationException(); 333 } 334 335 @Override 336 public boolean clipRect(float left, float top, float right, float bottom) { 337 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 338 } 339 340 private static native boolean nClipRect(int renderer, float left, float top, 341 float right, float bottom, int op); 342 343 @Override 344 public boolean clipRect(float left, float top, float right, float bottom, Region.Op op) { 345 return nClipRect(mRenderer, left, top, right, bottom, op.nativeInt); 346 } 347 348 @Override 349 public boolean clipRect(int left, int top, int right, int bottom) { 350 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 351 } 352 353 private static native boolean nClipRect(int renderer, int left, int top, int right, int bottom, 354 int op); 355 356 @Override 357 public boolean clipRect(Rect rect) { 358 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 359 Region.Op.INTERSECT.nativeInt); 360 } 361 362 @Override 363 public boolean clipRect(Rect rect, Region.Op op) { 364 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 365 } 366 367 @Override 368 public boolean clipRect(RectF rect) { 369 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 370 Region.Op.INTERSECT.nativeInt); 371 } 372 373 @Override 374 public boolean clipRect(RectF rect, Region.Op op) { 375 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 376 } 377 378 @Override 379 public boolean clipRegion(Region region) { 380 throw new UnsupportedOperationException(); 381 } 382 383 @Override 384 public boolean clipRegion(Region region, Region.Op op) { 385 throw new UnsupportedOperationException(); 386 } 387 388 @Override 389 public boolean getClipBounds(Rect bounds) { 390 return nGetClipBounds(mRenderer, bounds); 391 } 392 393 private static native boolean nGetClipBounds(int renderer, Rect bounds); 394 395 @Override 396 public boolean quickReject(float left, float top, float right, float bottom, EdgeType type) { 397 return nQuickReject(mRenderer, left, top, right, bottom, type.nativeInt); 398 } 399 400 private static native boolean nQuickReject(int renderer, float left, float top, 401 float right, float bottom, int edge); 402 403 @Override 404 public boolean quickReject(Path path, EdgeType type) { 405 throw new UnsupportedOperationException(); 406 } 407 408 @Override 409 public boolean quickReject(RectF rect, EdgeType type) { 410 return quickReject(rect.left, rect.top, rect.right, rect.bottom, type); 411 } 412 413 /////////////////////////////////////////////////////////////////////////// 414 // Transformations 415 /////////////////////////////////////////////////////////////////////////// 416 417 @Override 418 public void translate(float dx, float dy) { 419 if (dx != 0.0f || dy != 0.0f) nTranslate(mRenderer, dx, dy); 420 } 421 422 private static native void nTranslate(int renderer, float dx, float dy); 423 424 @Override 425 public void skew(float sx, float sy) { 426 nSkew(mRenderer, sx, sy); 427 } 428 429 private static native void nSkew(int renderer, float sx, float sy); 430 431 @Override 432 public void rotate(float degrees) { 433 nRotate(mRenderer, degrees); 434 } 435 436 private static native void nRotate(int renderer, float degrees); 437 438 @Override 439 public void scale(float sx, float sy) { 440 nScale(mRenderer, sx, sy); 441 } 442 443 private static native void nScale(int renderer, float sx, float sy); 444 445 @Override 446 public void setMatrix(Matrix matrix) { 447 nSetMatrix(mRenderer, matrix.native_instance); 448 } 449 450 private static native void nSetMatrix(int renderer, int matrix); 451 452 @Override 453 public int getNativeMatrix() { 454 return nGetMatrix(mRenderer); 455 } 456 457 private static native int nGetMatrix(int renderer); 458 459 @Override 460 public void getMatrix(Matrix matrix) { 461 nGetMatrix(mRenderer, matrix.native_instance); 462 } 463 464 private static native void nGetMatrix(int renderer, int matrix); 465 466 @Override 467 public void concat(Matrix matrix) { 468 nConcatMatrix(mRenderer, matrix.native_instance); 469 } 470 471 private static native void nConcatMatrix(int renderer, int matrix); 472 473 /////////////////////////////////////////////////////////////////////////// 474 // State management 475 /////////////////////////////////////////////////////////////////////////// 476 477 @Override 478 public int save() { 479 return nSave(mRenderer, Canvas.CLIP_SAVE_FLAG | Canvas.MATRIX_SAVE_FLAG); 480 } 481 482 @Override 483 public int save(int saveFlags) { 484 return nSave(mRenderer, saveFlags); 485 } 486 487 private static native int nSave(int renderer, int flags); 488 489 @Override 490 public int saveLayer(RectF bounds, Paint paint, int saveFlags) { 491 return saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom, paint, saveFlags); 492 } 493 494 @Override 495 public int saveLayer(float left, float top, float right, float bottom, Paint paint, 496 int saveFlags) { 497 if (left < right && top < bottom) { 498 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 499 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 500 int count = nSaveLayer(mRenderer, left, top, right, bottom, nativePaint, saveFlags); 501 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 502 return count; 503 } 504 return save(saveFlags); 505 } 506 507 private static native int nSaveLayer(int renderer, float left, float top, 508 float right, float bottom, int paint, int saveFlags); 509 510 @Override 511 public int saveLayerAlpha(RectF bounds, int alpha, int saveFlags) { 512 return saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom, 513 alpha, saveFlags); 514 } 515 516 @Override 517 public int saveLayerAlpha(float left, float top, float right, float bottom, int alpha, 518 int saveFlags) { 519 if (left < right && top < bottom) { 520 return nSaveLayerAlpha(mRenderer, left, top, right, bottom, alpha, saveFlags); 521 } 522 return save(saveFlags); 523 } 524 525 private static native int nSaveLayerAlpha(int renderer, float left, float top, float right, 526 float bottom, int alpha, int saveFlags); 527 528 @Override 529 public void restore() { 530 nRestore(mRenderer); 531 } 532 533 private static native void nRestore(int renderer); 534 535 @Override 536 public void restoreToCount(int saveCount) { 537 nRestoreToCount(mRenderer, saveCount); 538 } 539 540 private static native void nRestoreToCount(int renderer, int saveCount); 541 542 @Override 543 public int getSaveCount() { 544 return nGetSaveCount(mRenderer); 545 } 546 547 private static native int nGetSaveCount(int renderer); 548 549 /////////////////////////////////////////////////////////////////////////// 550 // Filtering 551 /////////////////////////////////////////////////////////////////////////// 552 553 @Override 554 public void setDrawFilter(DrawFilter filter) { 555 mFilter = filter; 556 } 557 558 @Override 559 public DrawFilter getDrawFilter() { 560 return mFilter; 561 } 562 563 /////////////////////////////////////////////////////////////////////////// 564 // Drawing 565 /////////////////////////////////////////////////////////////////////////// 566 567 @Override 568 public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, 569 Paint paint) { 570 int modifiers = setupModifiers(paint); 571 nDrawArc(mRenderer, oval.left, oval.top, oval.right, oval.bottom, startAngle, sweepAngle, 572 useCenter, paint.mNativePaint); 573 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 574 } 575 576 private static native void nDrawArc(int renderer, float left, float top, 577 float right, float bottom, float startAngle, float sweepAngle, 578 boolean useCenter, int paint); 579 580 @Override 581 public void drawARGB(int a, int r, int g, int b) { 582 drawColor((a & 0xFF) << 24 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 583 } 584 585 @Override 586 public void drawPatch(Bitmap bitmap, byte[] chunks, RectF dst, Paint paint) { 587 // Shaders are ignored when drawing patches 588 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 589 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 590 nDrawPatch(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, chunks, 591 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 592 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 593 } 594 595 private static native void nDrawPatch(int renderer, int bitmap, byte[] buffer, byte[] chunks, 596 float left, float top, float right, float bottom, int paint); 597 598 @Override 599 public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) { 600 // Shaders are ignored when drawing bitmaps 601 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 602 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 603 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, nativePaint); 604 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 605 } 606 607 private static native void nDrawBitmap( 608 int renderer, int bitmap, byte[] buffer, float left, float top, int paint); 609 610 @Override 611 public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) { 612 // Shaders are ignored when drawing bitmaps 613 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 614 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 615 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, 616 matrix.native_instance, nativePaint); 617 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 618 } 619 620 private static native void nDrawBitmap(int renderer, int bitmap, byte[] buff, 621 int matrix, int paint); 622 623 @Override 624 public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) { 625 // Shaders are ignored when drawing bitmaps 626 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 627 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 628 629 int left, top, right, bottom; 630 if (src == null) { 631 left = top = 0; 632 right = bitmap.getWidth(); 633 bottom = bitmap.getHeight(); 634 } else { 635 left = src.left; 636 right = src.right; 637 top = src.top; 638 bottom = src.bottom; 639 } 640 641 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, right, bottom, 642 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 643 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 644 } 645 646 @Override 647 public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) { 648 // Shaders are ignored when drawing bitmaps 649 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 650 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 651 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, src.left, src.top, src.right, 652 src.bottom, dst.left, dst.top, dst.right, dst.bottom, nativePaint); 653 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 654 } 655 656 private static native void nDrawBitmap(int renderer, int bitmap, byte[] buffer, 657 float srcLeft, float srcTop, float srcRight, float srcBottom, 658 float left, float top, float right, float bottom, int paint); 659 660 @Override 661 public void drawBitmap(int[] colors, int offset, int stride, float x, float y, 662 int width, int height, boolean hasAlpha, Paint paint) { 663 // Shaders are ignored when drawing bitmaps 664 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 665 final Bitmap.Config config = hasAlpha ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; 666 final Bitmap b = Bitmap.createBitmap(colors, offset, stride, width, height, config); 667 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 668 nDrawBitmap(mRenderer, b.mNativeBitmap, b.mBuffer, x, y, nativePaint); 669 b.recycle(); 670 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 671 } 672 673 @Override 674 public void drawBitmap(int[] colors, int offset, int stride, int x, int y, 675 int width, int height, boolean hasAlpha, Paint paint) { 676 // Shaders are ignored when drawing bitmaps 677 drawBitmap(colors, offset, stride, (float) x, (float) y, width, height, hasAlpha, paint); 678 } 679 680 @Override 681 public void drawBitmapMesh(Bitmap bitmap, int meshWidth, int meshHeight, float[] verts, 682 int vertOffset, int[] colors, int colorOffset, Paint paint) { 683 if (meshWidth < 0 || meshHeight < 0 || vertOffset < 0 || colorOffset < 0) { 684 throw new ArrayIndexOutOfBoundsException(); 685 } 686 687 if (meshWidth == 0 || meshHeight == 0) { 688 return; 689 } 690 691 final int count = (meshWidth + 1) * (meshHeight + 1); 692 checkRange(verts.length, vertOffset, count * 2); 693 694 // TODO: Colors are ignored for now 695 colors = null; 696 colorOffset = 0; 697 698 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 699 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 700 nDrawBitmapMesh(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, meshWidth, meshHeight, 701 verts, vertOffset, colors, colorOffset, nativePaint); 702 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 703 } 704 705 private static native void nDrawBitmapMesh(int renderer, int bitmap, byte[] buffer, 706 int meshWidth, int meshHeight, float[] verts, int vertOffset, 707 int[] colors, int colorOffset, int paint); 708 709 @Override 710 public void drawCircle(float cx, float cy, float radius, Paint paint) { 711 int modifiers = setupModifiers(paint); 712 nDrawCircle(mRenderer, cx, cy, radius, paint.mNativePaint); 713 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 714 } 715 716 private static native void nDrawCircle(int renderer, float cx, float cy, 717 float radius, int paint); 718 719 @Override 720 public void drawColor(int color) { 721 drawColor(color, PorterDuff.Mode.SRC_OVER); 722 } 723 724 @Override 725 public void drawColor(int color, PorterDuff.Mode mode) { 726 nDrawColor(mRenderer, color, mode.nativeInt); 727 } 728 729 private static native void nDrawColor(int renderer, int color, int mode); 730 731 @Override 732 public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) { 733 mLine[0] = startX; 734 mLine[1] = startY; 735 mLine[2] = stopX; 736 mLine[3] = stopY; 737 drawLines(mLine, 0, 4, paint); 738 } 739 740 @Override 741 public void drawLines(float[] pts, int offset, int count, Paint paint) { 742 if ((offset | count) < 0 || offset + count > pts.length) { 743 throw new IllegalArgumentException("The lines array must contain 4 elements per line."); 744 } 745 int modifiers = setupModifiers(paint); 746 nDrawLines(mRenderer, pts, offset, count, paint.mNativePaint); 747 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 748 } 749 750 private static native void nDrawLines(int renderer, float[] points, 751 int offset, int count, int paint); 752 753 @Override 754 public void drawLines(float[] pts, Paint paint) { 755 drawLines(pts, 0, pts.length, paint); 756 } 757 758 @Override 759 public void drawOval(RectF oval, Paint paint) { 760 int modifiers = setupModifiers(paint); 761 nDrawOval(mRenderer, oval.left, oval.top, oval.right, oval.bottom, paint.mNativePaint); 762 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 763 } 764 765 private static native void nDrawOval(int renderer, float left, float top, 766 float right, float bottom, int paint); 767 768 @Override 769 public void drawPaint(Paint paint) { 770 final Rect r = mClipBounds; 771 nGetClipBounds(mRenderer, r); 772 drawRect(r.left, r.top, r.right, r.bottom, paint); 773 } 774 775 @Override 776 public void drawPath(Path path, Paint paint) { 777 int modifiers = setupModifiers(paint); 778 if (path.isSimplePath) { 779 if (path.rects != null) { 780 nDrawRects(mRenderer, path.rects.mNativeRegion, paint.mNativePaint); 781 } 782 } else { 783 nDrawPath(mRenderer, path.mNativePath, paint.mNativePaint); 784 } 785 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 786 } 787 788 private static native void nDrawPath(int renderer, int path, int paint); 789 private static native void nDrawRects(int renderer, int region, int paint); 790 791 @Override 792 public void drawPicture(Picture picture) { 793 throw new UnsupportedOperationException(); 794 } 795 796 @Override 797 public void drawPicture(Picture picture, Rect dst) { 798 throw new UnsupportedOperationException(); 799 } 800 801 @Override 802 public void drawPicture(Picture picture, RectF dst) { 803 throw new UnsupportedOperationException(); 804 } 805 806 @Override 807 public void drawPoint(float x, float y, Paint paint) { 808 mPoint[0] = x; 809 mPoint[1] = y; 810 drawPoints(mPoint, 0, 2, paint); 811 } 812 813 @Override 814 public void drawPoints(float[] pts, Paint paint) { 815 drawPoints(pts, 0, pts.length, paint); 816 } 817 818 @Override 819 public void drawPoints(float[] pts, int offset, int count, Paint paint) { 820 int modifiers = setupModifiers(paint); 821 nDrawPoints(mRenderer, pts, offset, count, paint.mNativePaint); 822 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 823 } 824 825 private static native void nDrawPoints(int renderer, float[] points, 826 int offset, int count, int paint); 827 828 @Override 829 public void drawPosText(char[] text, int index, int count, float[] pos, Paint paint) { 830 // TODO: Implement 831 } 832 833 @Override 834 public void drawPosText(String text, float[] pos, Paint paint) { 835 // TODO: Implement 836 } 837 838 @Override 839 public void drawRect(float left, float top, float right, float bottom, Paint paint) { 840 int modifiers = setupModifiers(paint); 841 nDrawRect(mRenderer, left, top, right, bottom, paint.mNativePaint); 842 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 843 } 844 845 private static native void nDrawRect(int renderer, float left, float top, 846 float right, float bottom, int paint); 847 848 @Override 849 public void drawRect(Rect r, Paint paint) { 850 drawRect(r.left, r.top, r.right, r.bottom, paint); 851 } 852 853 @Override 854 public void drawRect(RectF r, Paint paint) { 855 drawRect(r.left, r.top, r.right, r.bottom, paint); 856 } 857 858 @Override 859 public void drawRGB(int r, int g, int b) { 860 drawColor(0xFF000000 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 861 } 862 863 @Override 864 public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) { 865 int modifiers = setupModifiers(paint); 866 nDrawRoundRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 867 rx, ry, paint.mNativePaint); 868 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 869 } 870 871 private static native void nDrawRoundRect(int renderer, float left, float top, 872 float right, float bottom, float rx, float y, int paint); 873 874 @Override 875 public void drawText(char[] text, int index, int count, float x, float y, Paint paint) { 876 if ((index | count | (index + count) | (text.length - index - count)) < 0) { 877 throw new IndexOutOfBoundsException(); 878 } 879 880 int modifiers = setupModifiers(paint); 881 try { 882 nDrawText(mRenderer, text, index, count, x, y, paint.mBidiFlags, paint.mNativePaint); 883 } finally { 884 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 885 } 886 } 887 888 private static native void nDrawText(int renderer, char[] text, int index, int count, 889 float x, float y, int bidiFlags, int paint); 890 891 @Override 892 public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) { 893 int modifiers = setupModifiers(paint); 894 try { 895 if (text instanceof String || text instanceof SpannedString || 896 text instanceof SpannableString) { 897 nDrawText(mRenderer, text.toString(), start, end, x, y, paint.mBidiFlags, 898 paint.mNativePaint); 899 } else if (text instanceof GraphicsOperations) { 900 ((GraphicsOperations) text).drawText(this, start, end, x, y, 901 paint); 902 } else { 903 char[] buf = TemporaryBuffer.obtain(end - start); 904 TextUtils.getChars(text, start, end, buf, 0); 905 nDrawText(mRenderer, buf, 0, end - start, x, y, 906 paint.mBidiFlags, paint.mNativePaint); 907 TemporaryBuffer.recycle(buf); 908 } 909 } finally { 910 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 911 } 912 } 913 914 @Override 915 public void drawText(String text, int start, int end, float x, float y, Paint paint) { 916 if ((start | end | (end - start) | (text.length() - end)) < 0) { 917 throw new IndexOutOfBoundsException(); 918 } 919 920 int modifiers = setupModifiers(paint); 921 try { 922 nDrawText(mRenderer, text, start, end, x, y, paint.mBidiFlags, paint.mNativePaint); 923 } finally { 924 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 925 } 926 } 927 928 private static native void nDrawText(int renderer, String text, int start, int end, 929 float x, float y, int bidiFlags, int paint); 930 931 @Override 932 public void drawText(String text, float x, float y, Paint paint) { 933 int modifiers = setupModifiers(paint); 934 try { 935 nDrawText(mRenderer, text, 0, text.length(), x, y, paint.mBidiFlags, 936 paint.mNativePaint); 937 } finally { 938 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 939 } 940 } 941 942 @Override 943 public void drawTextOnPath(char[] text, int index, int count, Path path, float hOffset, 944 float vOffset, Paint paint) { 945 // TODO: Implement 946 } 947 948 @Override 949 public void drawTextOnPath(String text, Path path, float hOffset, float vOffset, Paint paint) { 950 // TODO: Implement 951 } 952 953 @Override 954 public void drawTextRun(char[] text, int index, int count, int contextIndex, int contextCount, 955 float x, float y, int dir, Paint paint) { 956 if ((index | count | text.length - index - count) < 0) { 957 throw new IndexOutOfBoundsException(); 958 } 959 if (dir != DIRECTION_LTR && dir != DIRECTION_RTL) { 960 throw new IllegalArgumentException("Unknown direction: " + dir); 961 } 962 963 int modifiers = setupModifiers(paint); 964 try { 965 nDrawTextRun(mRenderer, text, index, count, contextIndex, contextCount, x, y, dir, 966 paint.mNativePaint); 967 } finally { 968 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 969 } 970 } 971 972 private static native void nDrawTextRun(int renderer, char[] text, int index, int count, 973 int contextIndex, int contextCount, float x, float y, int dir, int nativePaint); 974 975 @Override 976 public void drawTextRun(CharSequence text, int start, int end, int contextStart, int contextEnd, 977 float x, float y, int dir, Paint paint) { 978 if ((start | end | end - start | text.length() - end) < 0) { 979 throw new IndexOutOfBoundsException(); 980 } 981 982 int modifiers = setupModifiers(paint); 983 try { 984 int flags = dir == 0 ? 0 : 1; 985 if (text instanceof String || text instanceof SpannedString || 986 text instanceof SpannableString) { 987 nDrawTextRun(mRenderer, text.toString(), start, end, contextStart, 988 contextEnd, x, y, flags, paint.mNativePaint); 989 } else if (text instanceof GraphicsOperations) { 990 ((GraphicsOperations) text).drawTextRun(this, start, end, 991 contextStart, contextEnd, x, y, flags, paint); 992 } else { 993 int contextLen = contextEnd - contextStart; 994 int len = end - start; 995 char[] buf = TemporaryBuffer.obtain(contextLen); 996 TextUtils.getChars(text, contextStart, contextEnd, buf, 0); 997 nDrawTextRun(mRenderer, buf, start - contextStart, len, 0, contextLen, 998 x, y, flags, paint.mNativePaint); 999 TemporaryBuffer.recycle(buf); 1000 } 1001 } finally { 1002 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1003 } 1004 } 1005 1006 private static native void nDrawTextRun(int renderer, String text, int start, int end, 1007 int contextStart, int contextEnd, float x, float y, int flags, int nativePaint); 1008 1009 @Override 1010 public void drawVertices(VertexMode mode, int vertexCount, float[] verts, int vertOffset, 1011 float[] texs, int texOffset, int[] colors, int colorOffset, short[] indices, 1012 int indexOffset, int indexCount, Paint paint) { 1013 // TODO: Implement 1014 } 1015 1016 private int setupModifiers(Bitmap b, Paint paint) { 1017 if (b.getConfig() == Bitmap.Config.ALPHA_8) { 1018 return setupModifiers(paint); 1019 } 1020 1021 final ColorFilter filter = paint.getColorFilter(); 1022 if (filter != null) { 1023 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1024 return MODIFIER_COLOR_FILTER; 1025 } 1026 1027 return MODIFIER_NONE; 1028 } 1029 1030 private int setupModifiers(Paint paint) { 1031 int modifiers = MODIFIER_NONE; 1032 1033 if (paint.hasShadow) { 1034 nSetupShadow(mRenderer, paint.shadowRadius, paint.shadowDx, paint.shadowDy, 1035 paint.shadowColor); 1036 modifiers |= MODIFIER_SHADOW; 1037 } 1038 1039 final Shader shader = paint.getShader(); 1040 if (shader != null) { 1041 nSetupShader(mRenderer, shader.native_shader); 1042 modifiers |= MODIFIER_SHADER; 1043 } 1044 1045 final ColorFilter filter = paint.getColorFilter(); 1046 if (filter != null) { 1047 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1048 modifiers |= MODIFIER_COLOR_FILTER; 1049 } 1050 1051 return modifiers; 1052 } 1053 1054 private int setupColorFilter(Paint paint) { 1055 final ColorFilter filter = paint.getColorFilter(); 1056 if (filter != null) { 1057 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1058 return MODIFIER_COLOR_FILTER; 1059 } 1060 return MODIFIER_NONE; 1061 } 1062 1063 private static native void nSetupShader(int renderer, int shader); 1064 private static native void nSetupColorFilter(int renderer, int colorFilter); 1065 private static native void nSetupShadow(int renderer, float radius, 1066 float dx, float dy, int color); 1067 1068 private static native void nResetModifiers(int renderer, int modifiers); 1069} 1070