GLES20Canvas.java revision 77a811610f99e21da7f88dafef60d09f345d0506
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 // Must match modifiers used in the JNI layer 43 private static final int MODIFIER_NONE = 0; 44 private static final int MODIFIER_SHADOW = 1; 45 private static final int MODIFIER_SHADER = 2; 46 private static final int MODIFIER_COLOR_FILTER = 4; 47 48 private final boolean mOpaque; 49 private int mRenderer; 50 51 // The native renderer will be destroyed when this object dies. 52 // DO NOT overwrite this reference once it is set. 53 private CanvasFinalizer mFinalizer; 54 55 private int mWidth; 56 private int mHeight; 57 58 private final float[] mPoint = new float[2]; 59 private final float[] mLine = new float[4]; 60 61 private final Rect mClipBounds = new Rect(); 62 63 private DrawFilter mFilter; 64 65 /////////////////////////////////////////////////////////////////////////// 66 // JNI 67 /////////////////////////////////////////////////////////////////////////// 68 69 private static native boolean nIsAvailable(); 70 private static boolean sIsAvailable = nIsAvailable(); 71 72 static boolean isAvailable() { 73 return sIsAvailable; 74 } 75 76 /////////////////////////////////////////////////////////////////////////// 77 // Constructors 78 /////////////////////////////////////////////////////////////////////////// 79 80 /** 81 * Creates a canvas to render directly on screen. 82 */ 83 GLES20Canvas(boolean translucent) { 84 this(false, translucent); 85 } 86 87 /** 88 * Creates a canvas to render into an FBO. 89 */ 90 GLES20Canvas(int layer, boolean translucent) { 91 mOpaque = !translucent; 92 mRenderer = nCreateLayerRenderer(layer); 93 setupFinalizer(); 94 } 95 96 protected GLES20Canvas(boolean record, boolean translucent) { 97 mOpaque = !translucent; 98 99 setupRenderer(record); 100 } 101 102 protected void setupRenderer(boolean record) { 103 if (record) { 104 mRenderer = nGetDisplayListRenderer(mRenderer); 105 } else { 106 mRenderer = nCreateRenderer(); 107 } 108 109 setupFinalizer(); 110 } 111 112 private void setupFinalizer() { 113 if (mRenderer == 0) { 114 throw new IllegalStateException("Could not create GLES20Canvas renderer"); 115 } else { 116 mFinalizer = CanvasFinalizer.getFinalizer(mFinalizer, mRenderer); 117 } 118 } 119 120 private static native int nCreateRenderer(); 121 private static native int nCreateLayerRenderer(int layer); 122 private static native int nGetDisplayListRenderer(int renderer); 123 private static native void nDestroyRenderer(int renderer); 124 125 private static class CanvasFinalizer { 126 int mRenderer; 127 128 // Factory method returns new instance if old one is null, or old instance 129 // otherwise, destroying native renderer along the way as necessary 130 static CanvasFinalizer getFinalizer(CanvasFinalizer oldFinalizer, int renderer) { 131 if (oldFinalizer == null) { 132 return new CanvasFinalizer(renderer); 133 } 134 oldFinalizer.replaceNativeObject(renderer); 135 return oldFinalizer; 136 } 137 138 private CanvasFinalizer(int renderer) { 139 mRenderer = renderer; 140 } 141 142 private void replaceNativeObject(int newRenderer) { 143 if (mRenderer != 0 && newRenderer != mRenderer) { 144 nDestroyRenderer(mRenderer); 145 } 146 mRenderer = newRenderer; 147 } 148 149 @Override 150 protected void finalize() throws Throwable { 151 try { 152 replaceNativeObject(0); 153 } finally { 154 super.finalize(); 155 } 156 } 157 } 158 159 /////////////////////////////////////////////////////////////////////////// 160 // Hardware layers 161 /////////////////////////////////////////////////////////////////////////// 162 163 static native int nCreateTextureLayer(int[] layerInfo); 164 static native int nCreateLayer(int width, int height, boolean isOpaque, int[] layerInfo); 165 static native void nResizeLayer(int layerId, int width, int height, int[] layerInfo); 166 static native void nUpdateTextureLayer(int layerId, int width, int height, int surface); 167 static native void nDestroyLayer(int layerId); 168 static native void nDestroyLayerDeferred(int layerId); 169 static native boolean nCopyLayer(int layerId, int bitmap); 170 171 /////////////////////////////////////////////////////////////////////////// 172 // Canvas management 173 /////////////////////////////////////////////////////////////////////////// 174 175 @Override 176 public boolean isOpaque() { 177 return mOpaque; 178 } 179 180 @Override 181 public int getWidth() { 182 return mWidth; 183 } 184 185 @Override 186 public int getHeight() { 187 return mHeight; 188 } 189 190 /////////////////////////////////////////////////////////////////////////// 191 // Setup 192 /////////////////////////////////////////////////////////////////////////// 193 194 @Override 195 public void setViewport(int width, int height) { 196 mWidth = width; 197 mHeight = height; 198 199 nSetViewport(mRenderer, width, height); 200 } 201 202 private static native void nSetViewport(int renderer, int width, int height); 203 204 /** 205 * Preserves the back buffer of the current surface after a buffer swap. 206 * Calling this method sets the EGL_SWAP_BEHAVIOR attribute of the current 207 * surface to EGL_BUFFER_PRESERVED. Calling this method requires an EGL 208 * config that supports EGL_SWAP_BEHAVIOR_PRESERVED_BIT. 209 * 210 * @return True if the swap behavior was successfully changed, 211 * false otherwise. 212 * 213 * @hide 214 */ 215 public static boolean preserveBackBuffer() { 216 return nPreserveBackBuffer(); 217 } 218 219 private static native boolean nPreserveBackBuffer(); 220 221 /** 222 * Indicates whether the current surface preserves its back buffer 223 * after a buffer swap. 224 * 225 * @return True, if the surface's EGL_SWAP_BEHAVIOR is EGL_BUFFER_PRESERVED, 226 * false otherwise 227 * 228 * @hide 229 */ 230 public static boolean isBackBufferPreserved() { 231 return nIsBackBufferPreserved(); 232 } 233 234 private static native boolean nIsBackBufferPreserved(); 235 236 @Override 237 void onPreDraw(Rect dirty) { 238 if (dirty != null) { 239 nPrepareDirty(mRenderer, dirty.left, dirty.top, dirty.right, dirty.bottom, mOpaque); 240 } else { 241 nPrepare(mRenderer, mOpaque); 242 } 243 } 244 245 private static native void nPrepare(int renderer, boolean opaque); 246 private static native void nPrepareDirty(int renderer, int left, int top, int right, int bottom, 247 boolean opaque); 248 249 @Override 250 void onPostDraw() { 251 nFinish(mRenderer); 252 } 253 254 private static native void nFinish(int renderer); 255 256 @Override 257 public boolean callDrawGLFunction(int drawGLFunction) { 258 return nCallDrawGLFunction(mRenderer, drawGLFunction); 259 } 260 261 private static native boolean nCallDrawGLFunction(int renderer, int drawGLFunction); 262 263 /////////////////////////////////////////////////////////////////////////// 264 // Display list 265 /////////////////////////////////////////////////////////////////////////// 266 267 int getDisplayList() { 268 return nGetDisplayList(mRenderer); 269 } 270 271 private static native int nGetDisplayList(int renderer); 272 273 static void destroyDisplayList(int displayList) { 274 nDestroyDisplayList(displayList); 275 } 276 277 private static native void nDestroyDisplayList(int displayList); 278 279 @Override 280 public boolean drawDisplayList(DisplayList displayList, int width, int height, Rect dirty) { 281 return nDrawDisplayList(mRenderer, 282 ((GLES20DisplayList) displayList).mNativeDisplayList, width, height, dirty); 283 } 284 285 private static native boolean nDrawDisplayList(int renderer, int displayList, 286 int width, int height, Rect dirty); 287 288 @Override 289 void outputDisplayList(DisplayList displayList) { 290 nOutputDisplayList(mRenderer, ((GLES20DisplayList) displayList).mNativeDisplayList); 291 } 292 293 private static native void nOutputDisplayList(int renderer, int displayList); 294 295 /////////////////////////////////////////////////////////////////////////// 296 // Hardware layer 297 /////////////////////////////////////////////////////////////////////////// 298 299 void drawHardwareLayer(HardwareLayer layer, float x, float y, Paint paint) { 300 final GLES20Layer glLayer = (GLES20Layer) layer; 301 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 302 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 303 nDrawLayer(mRenderer, glLayer.getLayer(), x, y, nativePaint); 304 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 305 } 306 307 private static native void nDrawLayer(int renderer, int layer, float x, float y, int paint); 308 309 void interrupt() { 310 nInterrupt(mRenderer); 311 } 312 313 void resume() { 314 nResume(mRenderer); 315 } 316 317 private static native void nInterrupt(int renderer); 318 private static native void nResume(int renderer); 319 320 /////////////////////////////////////////////////////////////////////////// 321 // Clipping 322 /////////////////////////////////////////////////////////////////////////// 323 324 @Override 325 public boolean clipPath(Path path) { 326 throw new UnsupportedOperationException(); 327 } 328 329 @Override 330 public boolean clipPath(Path path, Region.Op op) { 331 throw new UnsupportedOperationException(); 332 } 333 334 @Override 335 public boolean clipRect(float left, float top, float right, float bottom) { 336 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 337 } 338 339 private static native boolean nClipRect(int renderer, float left, float top, 340 float right, float bottom, int op); 341 342 @Override 343 public boolean clipRect(float left, float top, float right, float bottom, Region.Op op) { 344 return nClipRect(mRenderer, left, top, right, bottom, op.nativeInt); 345 } 346 347 @Override 348 public boolean clipRect(int left, int top, int right, int bottom) { 349 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 350 } 351 352 private static native boolean nClipRect(int renderer, int left, int top, int right, int bottom, 353 int op); 354 355 @Override 356 public boolean clipRect(Rect rect) { 357 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 358 Region.Op.INTERSECT.nativeInt); 359 } 360 361 @Override 362 public boolean clipRect(Rect rect, Region.Op op) { 363 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 364 } 365 366 @Override 367 public boolean clipRect(RectF rect) { 368 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 369 Region.Op.INTERSECT.nativeInt); 370 } 371 372 @Override 373 public boolean clipRect(RectF rect, Region.Op op) { 374 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 375 } 376 377 @Override 378 public boolean clipRegion(Region region) { 379 throw new UnsupportedOperationException(); 380 } 381 382 @Override 383 public boolean clipRegion(Region region, Region.Op op) { 384 throw new UnsupportedOperationException(); 385 } 386 387 @Override 388 public boolean getClipBounds(Rect bounds) { 389 return nGetClipBounds(mRenderer, bounds); 390 } 391 392 private static native boolean nGetClipBounds(int renderer, Rect bounds); 393 394 @Override 395 public boolean quickReject(float left, float top, float right, float bottom, EdgeType type) { 396 return nQuickReject(mRenderer, left, top, right, bottom, type.nativeInt); 397 } 398 399 private static native boolean nQuickReject(int renderer, float left, float top, 400 float right, float bottom, int edge); 401 402 @Override 403 public boolean quickReject(Path path, EdgeType type) { 404 throw new UnsupportedOperationException(); 405 } 406 407 @Override 408 public boolean quickReject(RectF rect, EdgeType type) { 409 return quickReject(rect.left, rect.top, rect.right, rect.bottom, type); 410 } 411 412 /////////////////////////////////////////////////////////////////////////// 413 // Transformations 414 /////////////////////////////////////////////////////////////////////////// 415 416 @Override 417 public void translate(float dx, float dy) { 418 if (dx != 0.0f || dy != 0.0f) nTranslate(mRenderer, dx, dy); 419 } 420 421 private static native void nTranslate(int renderer, float dx, float dy); 422 423 @Override 424 public void skew(float sx, float sy) { 425 nSkew(mRenderer, sx, sy); 426 } 427 428 private static native void nSkew(int renderer, float sx, float sy); 429 430 @Override 431 public void rotate(float degrees) { 432 nRotate(mRenderer, degrees); 433 } 434 435 private static native void nRotate(int renderer, float degrees); 436 437 @Override 438 public void scale(float sx, float sy) { 439 nScale(mRenderer, sx, sy); 440 } 441 442 private static native void nScale(int renderer, float sx, float sy); 443 444 @Override 445 public void setMatrix(Matrix matrix) { 446 nSetMatrix(mRenderer, matrix.native_instance); 447 } 448 449 private static native void nSetMatrix(int renderer, int matrix); 450 451 @Override 452 public int getNativeMatrix() { 453 return nGetMatrix(mRenderer); 454 } 455 456 private static native int nGetMatrix(int renderer); 457 458 @Override 459 public void getMatrix(Matrix matrix) { 460 nGetMatrix(mRenderer, matrix.native_instance); 461 } 462 463 private static native void nGetMatrix(int renderer, int matrix); 464 465 @Override 466 public void concat(Matrix matrix) { 467 nConcatMatrix(mRenderer, matrix.native_instance); 468 } 469 470 private static native void nConcatMatrix(int renderer, int matrix); 471 472 /////////////////////////////////////////////////////////////////////////// 473 // State management 474 /////////////////////////////////////////////////////////////////////////// 475 476 @Override 477 public int save() { 478 return nSave(mRenderer, Canvas.CLIP_SAVE_FLAG | Canvas.MATRIX_SAVE_FLAG); 479 } 480 481 @Override 482 public int save(int saveFlags) { 483 return nSave(mRenderer, saveFlags); 484 } 485 486 private static native int nSave(int renderer, int flags); 487 488 @Override 489 public int saveLayer(RectF bounds, Paint paint, int saveFlags) { 490 return saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom, paint, saveFlags); 491 } 492 493 @Override 494 public int saveLayer(float left, float top, float right, float bottom, Paint paint, 495 int saveFlags) { 496 if (left < right && top < bottom) { 497 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 498 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 499 int count = nSaveLayer(mRenderer, left, top, right, bottom, nativePaint, saveFlags); 500 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 501 return count; 502 } 503 return save(saveFlags); 504 } 505 506 private static native int nSaveLayer(int renderer, float left, float top, 507 float right, float bottom, int paint, int saveFlags); 508 509 @Override 510 public int saveLayerAlpha(RectF bounds, int alpha, int saveFlags) { 511 return saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom, 512 alpha, saveFlags); 513 } 514 515 @Override 516 public int saveLayerAlpha(float left, float top, float right, float bottom, int alpha, 517 int saveFlags) { 518 if (left < right && top < bottom) { 519 return nSaveLayerAlpha(mRenderer, left, top, right, bottom, alpha, saveFlags); 520 } 521 return save(saveFlags); 522 } 523 524 private static native int nSaveLayerAlpha(int renderer, float left, float top, float right, 525 float bottom, int alpha, int saveFlags); 526 527 @Override 528 public void restore() { 529 nRestore(mRenderer); 530 } 531 532 private static native void nRestore(int renderer); 533 534 @Override 535 public void restoreToCount(int saveCount) { 536 nRestoreToCount(mRenderer, saveCount); 537 } 538 539 private static native void nRestoreToCount(int renderer, int saveCount); 540 541 @Override 542 public int getSaveCount() { 543 return nGetSaveCount(mRenderer); 544 } 545 546 private static native int nGetSaveCount(int renderer); 547 548 /////////////////////////////////////////////////////////////////////////// 549 // Filtering 550 /////////////////////////////////////////////////////////////////////////// 551 552 @Override 553 public void setDrawFilter(DrawFilter filter) { 554 mFilter = filter; 555 } 556 557 @Override 558 public DrawFilter getDrawFilter() { 559 return mFilter; 560 } 561 562 /////////////////////////////////////////////////////////////////////////// 563 // Drawing 564 /////////////////////////////////////////////////////////////////////////// 565 566 @Override 567 public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, 568 Paint paint) { 569 int modifiers = setupModifiers(paint); 570 nDrawArc(mRenderer, oval.left, oval.top, oval.right, oval.bottom, startAngle, sweepAngle, 571 useCenter, paint.mNativePaint); 572 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 573 } 574 575 private static native void nDrawArc(int renderer, float left, float top, 576 float right, float bottom, float startAngle, float sweepAngle, 577 boolean useCenter, int paint); 578 579 @Override 580 public void drawARGB(int a, int r, int g, int b) { 581 drawColor((a & 0xFF) << 24 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 582 } 583 584 @Override 585 public void drawPatch(Bitmap bitmap, byte[] chunks, RectF dst, Paint paint) { 586 // Shaders are ignored when drawing patches 587 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 588 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 589 nDrawPatch(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, chunks, 590 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 591 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 592 } 593 594 private static native void nDrawPatch(int renderer, int bitmap, byte[] buffer, byte[] chunks, 595 float left, float top, float right, float bottom, int paint); 596 597 @Override 598 public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) { 599 // Shaders are ignored when drawing bitmaps 600 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 601 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 602 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, nativePaint); 603 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 604 } 605 606 private static native void nDrawBitmap( 607 int renderer, int bitmap, byte[] buffer, float left, float top, int paint); 608 609 @Override 610 public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) { 611 // Shaders are ignored when drawing bitmaps 612 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 613 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 614 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, 615 matrix.native_instance, nativePaint); 616 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 617 } 618 619 private static native void nDrawBitmap(int renderer, int bitmap, byte[] buff, 620 int matrix, int paint); 621 622 @Override 623 public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) { 624 // Shaders are ignored when drawing bitmaps 625 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 626 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 627 628 int left, top, right, bottom; 629 if (src == null) { 630 left = top = 0; 631 right = bitmap.getWidth(); 632 bottom = bitmap.getHeight(); 633 } else { 634 left = src.left; 635 right = src.right; 636 top = src.top; 637 bottom = src.bottom; 638 } 639 640 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, right, bottom, 641 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 642 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 643 } 644 645 @Override 646 public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) { 647 // Shaders are ignored when drawing bitmaps 648 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 649 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 650 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, src.left, src.top, src.right, 651 src.bottom, dst.left, dst.top, dst.right, dst.bottom, nativePaint); 652 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 653 } 654 655 private static native void nDrawBitmap(int renderer, int bitmap, byte[] buffer, 656 float srcLeft, float srcTop, float srcRight, float srcBottom, 657 float left, float top, float right, float bottom, int paint); 658 659 @Override 660 public void drawBitmap(int[] colors, int offset, int stride, float x, float y, 661 int width, int height, boolean hasAlpha, Paint paint) { 662 // Shaders are ignored when drawing bitmaps 663 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 664 final Bitmap.Config config = hasAlpha ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; 665 final Bitmap b = Bitmap.createBitmap(colors, offset, stride, width, height, config); 666 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 667 nDrawBitmap(mRenderer, b.mNativeBitmap, b.mBuffer, x, y, nativePaint); 668 b.recycle(); 669 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 670 } 671 672 @Override 673 public void drawBitmap(int[] colors, int offset, int stride, int x, int y, 674 int width, int height, boolean hasAlpha, Paint paint) { 675 // Shaders are ignored when drawing bitmaps 676 drawBitmap(colors, offset, stride, (float) x, (float) y, width, height, hasAlpha, paint); 677 } 678 679 @Override 680 public void drawBitmapMesh(Bitmap bitmap, int meshWidth, int meshHeight, float[] verts, 681 int vertOffset, int[] colors, int colorOffset, Paint paint) { 682 if (meshWidth < 0 || meshHeight < 0 || vertOffset < 0 || colorOffset < 0) { 683 throw new ArrayIndexOutOfBoundsException(); 684 } 685 686 if (meshWidth == 0 || meshHeight == 0) { 687 return; 688 } 689 690 final int count = (meshWidth + 1) * (meshHeight + 1); 691 checkRange(verts.length, vertOffset, count * 2); 692 693 // TODO: Colors are ignored for now 694 colors = null; 695 colorOffset = 0; 696 697 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 698 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 699 nDrawBitmapMesh(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, meshWidth, meshHeight, 700 verts, vertOffset, colors, colorOffset, nativePaint); 701 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 702 } 703 704 private static native void nDrawBitmapMesh(int renderer, int bitmap, byte[] buffer, 705 int meshWidth, int meshHeight, float[] verts, int vertOffset, 706 int[] colors, int colorOffset, int paint); 707 708 @Override 709 public void drawCircle(float cx, float cy, float radius, Paint paint) { 710 int modifiers = setupModifiers(paint); 711 nDrawCircle(mRenderer, cx, cy, radius, paint.mNativePaint); 712 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 713 } 714 715 private static native void nDrawCircle(int renderer, float cx, float cy, 716 float radius, int paint); 717 718 @Override 719 public void drawColor(int color) { 720 drawColor(color, PorterDuff.Mode.SRC_OVER); 721 } 722 723 @Override 724 public void drawColor(int color, PorterDuff.Mode mode) { 725 nDrawColor(mRenderer, color, mode.nativeInt); 726 } 727 728 private static native void nDrawColor(int renderer, int color, int mode); 729 730 @Override 731 public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) { 732 mLine[0] = startX; 733 mLine[1] = startY; 734 mLine[2] = stopX; 735 mLine[3] = stopY; 736 drawLines(mLine, 0, 4, paint); 737 } 738 739 @Override 740 public void drawLines(float[] pts, int offset, int count, Paint paint) { 741 if ((offset | count) < 0 || offset + count > pts.length) { 742 throw new IllegalArgumentException("The lines array must contain 4 elements per line."); 743 } 744 int modifiers = setupModifiers(paint); 745 nDrawLines(mRenderer, pts, offset, count, paint.mNativePaint); 746 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 747 } 748 749 private static native void nDrawLines(int renderer, float[] points, 750 int offset, int count, int paint); 751 752 @Override 753 public void drawLines(float[] pts, Paint paint) { 754 drawLines(pts, 0, pts.length, paint); 755 } 756 757 @Override 758 public void drawOval(RectF oval, Paint paint) { 759 int modifiers = setupModifiers(paint); 760 nDrawOval(mRenderer, oval.left, oval.top, oval.right, oval.bottom, paint.mNativePaint); 761 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 762 } 763 764 private static native void nDrawOval(int renderer, float left, float top, 765 float right, float bottom, int paint); 766 767 @Override 768 public void drawPaint(Paint paint) { 769 final Rect r = mClipBounds; 770 nGetClipBounds(mRenderer, r); 771 drawRect(r.left, r.top, r.right, r.bottom, paint); 772 } 773 774 @Override 775 public void drawPath(Path path, Paint paint) { 776 int modifiers = setupModifiers(paint); 777 if (path.isSimplePath) { 778 if (path.rects != null) { 779 nDrawRects(mRenderer, path.rects.mNativeRegion, paint.mNativePaint); 780 } 781 } else { 782 nDrawPath(mRenderer, path.mNativePath, paint.mNativePaint); 783 } 784 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 785 } 786 787 private static native void nDrawPath(int renderer, int path, int paint); 788 private static native void nDrawRects(int renderer, int region, int paint); 789 790 @Override 791 public void drawPicture(Picture picture) { 792 throw new UnsupportedOperationException(); 793 } 794 795 @Override 796 public void drawPicture(Picture picture, Rect dst) { 797 throw new UnsupportedOperationException(); 798 } 799 800 @Override 801 public void drawPicture(Picture picture, RectF dst) { 802 throw new UnsupportedOperationException(); 803 } 804 805 @Override 806 public void drawPoint(float x, float y, Paint paint) { 807 mPoint[0] = x; 808 mPoint[1] = y; 809 drawPoints(mPoint, 0, 2, paint); 810 } 811 812 @Override 813 public void drawPoints(float[] pts, Paint paint) { 814 drawPoints(pts, 0, pts.length, paint); 815 } 816 817 @Override 818 public void drawPoints(float[] pts, int offset, int count, Paint paint) { 819 int modifiers = setupModifiers(paint); 820 nDrawPoints(mRenderer, pts, offset, count, paint.mNativePaint); 821 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 822 } 823 824 private static native void nDrawPoints(int renderer, float[] points, 825 int offset, int count, int paint); 826 827 @Override 828 public void drawPosText(char[] text, int index, int count, float[] pos, Paint paint) { 829 // TODO: Implement 830 } 831 832 @Override 833 public void drawPosText(String text, float[] pos, Paint paint) { 834 // TODO: Implement 835 } 836 837 @Override 838 public void drawRect(float left, float top, float right, float bottom, Paint paint) { 839 int modifiers = setupModifiers(paint); 840 nDrawRect(mRenderer, left, top, right, bottom, paint.mNativePaint); 841 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 842 } 843 844 private static native void nDrawRect(int renderer, float left, float top, 845 float right, float bottom, int paint); 846 847 @Override 848 public void drawRect(Rect r, Paint paint) { 849 drawRect(r.left, r.top, r.right, r.bottom, paint); 850 } 851 852 @Override 853 public void drawRect(RectF r, Paint paint) { 854 drawRect(r.left, r.top, r.right, r.bottom, paint); 855 } 856 857 @Override 858 public void drawRGB(int r, int g, int b) { 859 drawColor(0xFF000000 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 860 } 861 862 @Override 863 public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) { 864 int modifiers = setupModifiers(paint); 865 nDrawRoundRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 866 rx, ry, paint.mNativePaint); 867 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 868 } 869 870 private static native void nDrawRoundRect(int renderer, float left, float top, 871 float right, float bottom, float rx, float y, int paint); 872 873 @Override 874 public void drawText(char[] text, int index, int count, float x, float y, Paint paint) { 875 if ((index | count | (index + count) | (text.length - index - count)) < 0) { 876 throw new IndexOutOfBoundsException(); 877 } 878 879 int modifiers = setupModifiers(paint); 880 try { 881 nDrawText(mRenderer, text, index, count, x, y, paint.mBidiFlags, paint.mNativePaint); 882 } finally { 883 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 884 } 885 } 886 887 private static native void nDrawText(int renderer, char[] text, int index, int count, 888 float x, float y, int bidiFlags, int paint); 889 890 @Override 891 public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) { 892 int modifiers = setupModifiers(paint); 893 try { 894 if (text instanceof String || text instanceof SpannedString || 895 text instanceof SpannableString) { 896 nDrawText(mRenderer, text.toString(), start, end, x, y, paint.mBidiFlags, 897 paint.mNativePaint); 898 } else if (text instanceof GraphicsOperations) { 899 ((GraphicsOperations) text).drawText(this, start, end, x, y, 900 paint); 901 } else { 902 char[] buf = TemporaryBuffer.obtain(end - start); 903 TextUtils.getChars(text, start, end, buf, 0); 904 nDrawText(mRenderer, buf, 0, end - start, x, y, 905 paint.mBidiFlags, paint.mNativePaint); 906 TemporaryBuffer.recycle(buf); 907 } 908 } finally { 909 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 910 } 911 } 912 913 @Override 914 public void drawText(String text, int start, int end, float x, float y, Paint paint) { 915 if ((start | end | (end - start) | (text.length() - end)) < 0) { 916 throw new IndexOutOfBoundsException(); 917 } 918 919 int modifiers = setupModifiers(paint); 920 try { 921 nDrawText(mRenderer, text, start, end, x, y, paint.mBidiFlags, paint.mNativePaint); 922 } finally { 923 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 924 } 925 } 926 927 private static native void nDrawText(int renderer, String text, int start, int end, 928 float x, float y, int bidiFlags, int paint); 929 930 @Override 931 public void drawText(String text, float x, float y, Paint paint) { 932 int modifiers = setupModifiers(paint); 933 try { 934 nDrawText(mRenderer, text, 0, text.length(), x, y, paint.mBidiFlags, 935 paint.mNativePaint); 936 } finally { 937 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 938 } 939 } 940 941 @Override 942 public void drawTextOnPath(char[] text, int index, int count, Path path, float hOffset, 943 float vOffset, Paint paint) { 944 // TODO: Implement 945 } 946 947 @Override 948 public void drawTextOnPath(String text, Path path, float hOffset, float vOffset, Paint paint) { 949 // TODO: Implement 950 } 951 952 @Override 953 public void drawTextRun(char[] text, int index, int count, int contextIndex, int contextCount, 954 float x, float y, int dir, Paint paint) { 955 if ((index | count | text.length - index - count) < 0) { 956 throw new IndexOutOfBoundsException(); 957 } 958 if (dir != DIRECTION_LTR && dir != DIRECTION_RTL) { 959 throw new IllegalArgumentException("Unknown direction: " + dir); 960 } 961 962 int modifiers = setupModifiers(paint); 963 try { 964 nDrawTextRun(mRenderer, text, index, count, contextIndex, contextCount, x, y, dir, 965 paint.mNativePaint); 966 } finally { 967 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 968 } 969 } 970 971 private static native void nDrawTextRun(int renderer, char[] text, int index, int count, 972 int contextIndex, int contextCount, float x, float y, int dir, int nativePaint); 973 974 @Override 975 public void drawTextRun(CharSequence text, int start, int end, int contextStart, int contextEnd, 976 float x, float y, int dir, Paint paint) { 977 if ((start | end | end - start | text.length() - end) < 0) { 978 throw new IndexOutOfBoundsException(); 979 } 980 981 int modifiers = setupModifiers(paint); 982 try { 983 int flags = dir == 0 ? 0 : 1; 984 if (text instanceof String || text instanceof SpannedString || 985 text instanceof SpannableString) { 986 nDrawTextRun(mRenderer, text.toString(), start, end, contextStart, 987 contextEnd, x, y, flags, paint.mNativePaint); 988 } else if (text instanceof GraphicsOperations) { 989 ((GraphicsOperations) text).drawTextRun(this, start, end, 990 contextStart, contextEnd, x, y, flags, paint); 991 } else { 992 int contextLen = contextEnd - contextStart; 993 int len = end - start; 994 char[] buf = TemporaryBuffer.obtain(contextLen); 995 TextUtils.getChars(text, contextStart, contextEnd, buf, 0); 996 nDrawTextRun(mRenderer, buf, start - contextStart, len, 0, contextLen, 997 x, y, flags, paint.mNativePaint); 998 TemporaryBuffer.recycle(buf); 999 } 1000 } finally { 1001 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 1002 } 1003 } 1004 1005 private static native void nDrawTextRun(int renderer, String text, int start, int end, 1006 int contextStart, int contextEnd, float x, float y, int flags, int nativePaint); 1007 1008 @Override 1009 public void drawVertices(VertexMode mode, int vertexCount, float[] verts, int vertOffset, 1010 float[] texs, int texOffset, int[] colors, int colorOffset, short[] indices, 1011 int indexOffset, int indexCount, Paint paint) { 1012 // TODO: Implement 1013 } 1014 1015 private int setupModifiers(Bitmap b, Paint paint) { 1016 if (b.getConfig() == Bitmap.Config.ALPHA_8) { 1017 return setupModifiers(paint); 1018 } 1019 1020 final ColorFilter filter = paint.getColorFilter(); 1021 if (filter != null) { 1022 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1023 return MODIFIER_COLOR_FILTER; 1024 } 1025 1026 return MODIFIER_NONE; 1027 } 1028 1029 private int setupModifiers(Paint paint) { 1030 int modifiers = MODIFIER_NONE; 1031 1032 if (paint.hasShadow) { 1033 nSetupShadow(mRenderer, paint.shadowRadius, paint.shadowDx, paint.shadowDy, 1034 paint.shadowColor); 1035 modifiers |= MODIFIER_SHADOW; 1036 } 1037 1038 final Shader shader = paint.getShader(); 1039 if (shader != null) { 1040 nSetupShader(mRenderer, shader.native_shader); 1041 modifiers |= MODIFIER_SHADER; 1042 } 1043 1044 final ColorFilter filter = paint.getColorFilter(); 1045 if (filter != null) { 1046 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1047 modifiers |= MODIFIER_COLOR_FILTER; 1048 } 1049 1050 return modifiers; 1051 } 1052 1053 private int setupColorFilter(Paint paint) { 1054 final ColorFilter filter = paint.getColorFilter(); 1055 if (filter != null) { 1056 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1057 return MODIFIER_COLOR_FILTER; 1058 } 1059 return MODIFIER_NONE; 1060 } 1061 1062 private static native void nSetupShader(int renderer, int shader); 1063 private static native void nSetupColorFilter(int renderer, int colorFilter); 1064 private static native void nSetupShadow(int renderer, float radius, 1065 float dx, float dy, int color); 1066 1067 private static native void nResetModifiers(int renderer, int modifiers); 1068} 1069