GLES20Canvas.java revision 56215274f25d0040af00bf69b0df990894c0b4b0
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 nCreateLayer(int width, int height, boolean isOpaque, int[] layerInfo); 164 static native void nResizeLayer(int layerId, int width, int height, int[] layerInfo); 165 static native void nDestroyLayer(int layerId); 166 static native void nDestroyLayerDeferred(int layerId); 167 168 /////////////////////////////////////////////////////////////////////////// 169 // Canvas management 170 /////////////////////////////////////////////////////////////////////////// 171 172 @Override 173 public boolean isOpaque() { 174 return mOpaque; 175 } 176 177 @Override 178 public int getWidth() { 179 return mWidth; 180 } 181 182 @Override 183 public int getHeight() { 184 return mHeight; 185 } 186 187 /////////////////////////////////////////////////////////////////////////// 188 // Setup 189 /////////////////////////////////////////////////////////////////////////// 190 191 @Override 192 public void setViewport(int width, int height) { 193 mWidth = width; 194 mHeight = height; 195 196 nSetViewport(mRenderer, width, height); 197 } 198 199 private static native void nSetViewport(int renderer, int width, int height); 200 201 /** 202 * @hide 203 */ 204 public static boolean preserveBackBuffer() { 205 return nPreserveBackBuffer(); 206 } 207 208 private static native boolean nPreserveBackBuffer(); 209 210 @Override 211 void onPreDraw(Rect dirty) { 212 if (dirty != null) { 213 nPrepareDirty(mRenderer, dirty.left, dirty.top, dirty.right, dirty.bottom, mOpaque); 214 } else { 215 nPrepare(mRenderer, mOpaque); 216 } 217 } 218 219 private static native void nPrepare(int renderer, boolean opaque); 220 private static native void nPrepareDirty(int renderer, int left, int top, int right, int bottom, 221 boolean opaque); 222 223 @Override 224 void onPostDraw() { 225 nFinish(mRenderer); 226 } 227 228 private static native void nFinish(int renderer); 229 230 @Override 231 public boolean callDrawGLFunction(int drawGLFunction) { 232 return nCallDrawGLFunction(mRenderer, drawGLFunction); 233 } 234 235 private static native boolean nCallDrawGLFunction(int renderer, int drawGLFunction); 236 237 /////////////////////////////////////////////////////////////////////////// 238 // Display list 239 /////////////////////////////////////////////////////////////////////////// 240 241 int getDisplayList() { 242 return nGetDisplayList(mRenderer); 243 } 244 245 private static native int nGetDisplayList(int renderer); 246 247 static void destroyDisplayList(int displayList) { 248 nDestroyDisplayList(displayList); 249 } 250 251 private static native void nDestroyDisplayList(int displayList); 252 253 @Override 254 public boolean drawDisplayList(DisplayList displayList, int width, int height, Rect dirty) { 255 return nDrawDisplayList(mRenderer, 256 ((GLES20DisplayList) displayList).mNativeDisplayList, width, height, dirty); 257 } 258 259 private static native boolean nDrawDisplayList(int renderer, int displayList, 260 int width, int height, Rect dirty); 261 262 /////////////////////////////////////////////////////////////////////////// 263 // Hardware layer 264 /////////////////////////////////////////////////////////////////////////// 265 266 void drawHardwareLayer(HardwareLayer layer, float x, float y, Paint paint) { 267 final GLES20Layer glLayer = (GLES20Layer) layer; 268 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 269 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 270 nDrawLayer(mRenderer, glLayer.getLayer(), x, y, nativePaint); 271 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 272 } 273 274 private static native void nDrawLayer(int renderer, int layer, float x, float y, int paint); 275 276 void interrupt() { 277 nInterrupt(mRenderer); 278 } 279 280 void resume() { 281 nResume(mRenderer); 282 } 283 284 private static native void nInterrupt(int renderer); 285 private static native void nResume(int renderer); 286 287 /////////////////////////////////////////////////////////////////////////// 288 // Clipping 289 /////////////////////////////////////////////////////////////////////////// 290 291 @Override 292 public boolean clipPath(Path path) { 293 throw new UnsupportedOperationException(); 294 } 295 296 @Override 297 public boolean clipPath(Path path, Region.Op op) { 298 throw new UnsupportedOperationException(); 299 } 300 301 @Override 302 public boolean clipRect(float left, float top, float right, float bottom) { 303 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 304 } 305 306 private static native boolean nClipRect(int renderer, float left, float top, 307 float right, float bottom, int op); 308 309 @Override 310 public boolean clipRect(float left, float top, float right, float bottom, Region.Op op) { 311 return nClipRect(mRenderer, left, top, right, bottom, op.nativeInt); 312 } 313 314 @Override 315 public boolean clipRect(int left, int top, int right, int bottom) { 316 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 317 } 318 319 private static native boolean nClipRect(int renderer, int left, int top, int right, int bottom, 320 int op); 321 322 @Override 323 public boolean clipRect(Rect rect) { 324 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 325 Region.Op.INTERSECT.nativeInt); 326 } 327 328 @Override 329 public boolean clipRect(Rect rect, Region.Op op) { 330 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 331 } 332 333 @Override 334 public boolean clipRect(RectF rect) { 335 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 336 Region.Op.INTERSECT.nativeInt); 337 } 338 339 @Override 340 public boolean clipRect(RectF rect, Region.Op op) { 341 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 342 } 343 344 @Override 345 public boolean clipRegion(Region region) { 346 throw new UnsupportedOperationException(); 347 } 348 349 @Override 350 public boolean clipRegion(Region region, Region.Op op) { 351 throw new UnsupportedOperationException(); 352 } 353 354 @Override 355 public boolean getClipBounds(Rect bounds) { 356 return nGetClipBounds(mRenderer, bounds); 357 } 358 359 private static native boolean nGetClipBounds(int renderer, Rect bounds); 360 361 @Override 362 public boolean quickReject(float left, float top, float right, float bottom, EdgeType type) { 363 return nQuickReject(mRenderer, left, top, right, bottom, type.nativeInt); 364 } 365 366 private static native boolean nQuickReject(int renderer, float left, float top, 367 float right, float bottom, int edge); 368 369 @Override 370 public boolean quickReject(Path path, EdgeType type) { 371 throw new UnsupportedOperationException(); 372 } 373 374 @Override 375 public boolean quickReject(RectF rect, EdgeType type) { 376 return quickReject(rect.left, rect.top, rect.right, rect.bottom, type); 377 } 378 379 /////////////////////////////////////////////////////////////////////////// 380 // Transformations 381 /////////////////////////////////////////////////////////////////////////// 382 383 @Override 384 public void translate(float dx, float dy) { 385 if (dx != 0.0f || dy != 0.0f) nTranslate(mRenderer, dx, dy); 386 } 387 388 private static native void nTranslate(int renderer, float dx, float dy); 389 390 @Override 391 public void skew(float sx, float sy) { 392 nSkew(mRenderer, sx, sy); 393 } 394 395 private static native void nSkew(int renderer, float sx, float sy); 396 397 @Override 398 public void rotate(float degrees) { 399 nRotate(mRenderer, degrees); 400 } 401 402 private static native void nRotate(int renderer, float degrees); 403 404 @Override 405 public void scale(float sx, float sy) { 406 nScale(mRenderer, sx, sy); 407 } 408 409 private static native void nScale(int renderer, float sx, float sy); 410 411 @Override 412 public void setMatrix(Matrix matrix) { 413 nSetMatrix(mRenderer, matrix.native_instance); 414 } 415 416 private static native void nSetMatrix(int renderer, int matrix); 417 418 @Override 419 public int getNativeMatrix() { 420 return nGetMatrix(mRenderer); 421 } 422 423 private static native int nGetMatrix(int renderer); 424 425 @Override 426 public void getMatrix(Matrix matrix) { 427 nGetMatrix(mRenderer, matrix.native_instance); 428 } 429 430 private static native void nGetMatrix(int renderer, int matrix); 431 432 @Override 433 public void concat(Matrix matrix) { 434 nConcatMatrix(mRenderer, matrix.native_instance); 435 } 436 437 private static native void nConcatMatrix(int renderer, int matrix); 438 439 /////////////////////////////////////////////////////////////////////////// 440 // State management 441 /////////////////////////////////////////////////////////////////////////// 442 443 @Override 444 public int save() { 445 return nSave(mRenderer, Canvas.CLIP_SAVE_FLAG | Canvas.MATRIX_SAVE_FLAG); 446 } 447 448 @Override 449 public int save(int saveFlags) { 450 return nSave(mRenderer, saveFlags); 451 } 452 453 private static native int nSave(int renderer, int flags); 454 455 @Override 456 public int saveLayer(RectF bounds, Paint paint, int saveFlags) { 457 return saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom, paint, saveFlags); 458 } 459 460 @Override 461 public int saveLayer(float left, float top, float right, float bottom, Paint paint, 462 int saveFlags) { 463 if (left < right && top < bottom) { 464 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 465 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 466 int count = nSaveLayer(mRenderer, left, top, right, bottom, nativePaint, saveFlags); 467 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 468 return count; 469 } 470 return save(saveFlags); 471 } 472 473 private static native int nSaveLayer(int renderer, float left, float top, 474 float right, float bottom, int paint, int saveFlags); 475 476 @Override 477 public int saveLayerAlpha(RectF bounds, int alpha, int saveFlags) { 478 return saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom, 479 alpha, saveFlags); 480 } 481 482 @Override 483 public int saveLayerAlpha(float left, float top, float right, float bottom, int alpha, 484 int saveFlags) { 485 if (left < right && top < bottom) { 486 return nSaveLayerAlpha(mRenderer, left, top, right, bottom, alpha, saveFlags); 487 } 488 return save(saveFlags); 489 } 490 491 private static native int nSaveLayerAlpha(int renderer, float left, float top, float right, 492 float bottom, int alpha, int saveFlags); 493 494 @Override 495 public void restore() { 496 nRestore(mRenderer); 497 } 498 499 private static native void nRestore(int renderer); 500 501 @Override 502 public void restoreToCount(int saveCount) { 503 nRestoreToCount(mRenderer, saveCount); 504 } 505 506 private static native void nRestoreToCount(int renderer, int saveCount); 507 508 @Override 509 public int getSaveCount() { 510 return nGetSaveCount(mRenderer); 511 } 512 513 private static native int nGetSaveCount(int renderer); 514 515 /////////////////////////////////////////////////////////////////////////// 516 // Filtering 517 /////////////////////////////////////////////////////////////////////////// 518 519 @Override 520 public void setDrawFilter(DrawFilter filter) { 521 mFilter = filter; 522 } 523 524 @Override 525 public DrawFilter getDrawFilter() { 526 return mFilter; 527 } 528 529 /////////////////////////////////////////////////////////////////////////// 530 // Drawing 531 /////////////////////////////////////////////////////////////////////////// 532 533 @Override 534 public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, 535 Paint paint) { 536 int modifiers = setupModifiers(paint); 537 nDrawArc(mRenderer, oval.left, oval.top, oval.right, oval.bottom, startAngle, sweepAngle, 538 useCenter, paint.mNativePaint); 539 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 540 } 541 542 private static native void nDrawArc(int renderer, float left, float top, 543 float right, float bottom, float startAngle, float sweepAngle, 544 boolean useCenter, int paint); 545 546 @Override 547 public void drawARGB(int a, int r, int g, int b) { 548 drawColor((a & 0xFF) << 24 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 549 } 550 551 @Override 552 public void drawPatch(Bitmap bitmap, byte[] chunks, RectF dst, Paint paint) { 553 // Shaders are ignored when drawing patches 554 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 555 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 556 nDrawPatch(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, chunks, 557 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 558 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 559 } 560 561 private static native void nDrawPatch(int renderer, int bitmap, byte[] buffer, byte[] chunks, 562 float left, float top, float right, float bottom, int paint); 563 564 @Override 565 public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) { 566 // Shaders are ignored when drawing bitmaps 567 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 568 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 569 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, nativePaint); 570 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 571 } 572 573 private static native void nDrawBitmap( 574 int renderer, int bitmap, byte[] buffer, float left, float top, int paint); 575 576 @Override 577 public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) { 578 // Shaders are ignored when drawing bitmaps 579 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 580 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 581 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, 582 matrix.native_instance, nativePaint); 583 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 584 } 585 586 private static native void nDrawBitmap(int renderer, int bitmap, byte[] buff, 587 int matrix, int paint); 588 589 @Override 590 public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) { 591 // Shaders are ignored when drawing bitmaps 592 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 593 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 594 595 int left, top, right, bottom; 596 if (src == null) { 597 left = top = 0; 598 right = bitmap.getWidth(); 599 bottom = bitmap.getHeight(); 600 } else { 601 left = src.left; 602 right = src.right; 603 top = src.top; 604 bottom = src.bottom; 605 } 606 607 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, left, top, right, bottom, 608 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 609 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 610 } 611 612 @Override 613 public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) { 614 // Shaders are ignored when drawing bitmaps 615 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 616 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 617 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, src.left, src.top, src.right, 618 src.bottom, dst.left, dst.top, dst.right, dst.bottom, nativePaint); 619 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 620 } 621 622 private static native void nDrawBitmap(int renderer, int bitmap, byte[] buffer, 623 float srcLeft, float srcTop, float srcRight, float srcBottom, 624 float left, float top, float right, float bottom, int paint); 625 626 @Override 627 public void drawBitmap(int[] colors, int offset, int stride, float x, float y, 628 int width, int height, boolean hasAlpha, Paint paint) { 629 // Shaders are ignored when drawing bitmaps 630 int modifier = paint != null ? setupColorFilter(paint) : MODIFIER_NONE; 631 final Bitmap.Config config = hasAlpha ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; 632 final Bitmap b = Bitmap.createBitmap(colors, offset, stride, width, height, config); 633 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 634 nDrawBitmap(mRenderer, b.mNativeBitmap, b.mBuffer, x, y, nativePaint); 635 b.recycle(); 636 if (modifier != MODIFIER_NONE) nResetModifiers(mRenderer, modifier); 637 } 638 639 @Override 640 public void drawBitmap(int[] colors, int offset, int stride, int x, int y, 641 int width, int height, boolean hasAlpha, Paint paint) { 642 // Shaders are ignored when drawing bitmaps 643 drawBitmap(colors, offset, stride, (float) x, (float) y, width, height, hasAlpha, paint); 644 } 645 646 @Override 647 public void drawBitmapMesh(Bitmap bitmap, int meshWidth, int meshHeight, float[] verts, 648 int vertOffset, int[] colors, int colorOffset, Paint paint) { 649 if (meshWidth < 0 || meshHeight < 0 || vertOffset < 0 || colorOffset < 0) { 650 throw new ArrayIndexOutOfBoundsException(); 651 } 652 653 if (meshWidth == 0 || meshHeight == 0) { 654 return; 655 } 656 657 final int count = (meshWidth + 1) * (meshHeight + 1); 658 checkRange(verts.length, vertOffset, count * 2); 659 660 // TODO: Colors are ignored for now 661 colors = null; 662 colorOffset = 0; 663 664 int modifiers = paint != null ? setupModifiers(bitmap, paint) : MODIFIER_NONE; 665 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 666 nDrawBitmapMesh(mRenderer, bitmap.mNativeBitmap, bitmap.mBuffer, meshWidth, meshHeight, 667 verts, vertOffset, colors, colorOffset, nativePaint); 668 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 669 } 670 671 private static native void nDrawBitmapMesh(int renderer, int bitmap, byte[] buffer, 672 int meshWidth, int meshHeight, float[] verts, int vertOffset, 673 int[] colors, int colorOffset, int paint); 674 675 @Override 676 public void drawCircle(float cx, float cy, float radius, Paint paint) { 677 int modifiers = setupModifiers(paint); 678 nDrawCircle(mRenderer, cx, cy, radius, paint.mNativePaint); 679 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 680 } 681 682 private static native void nDrawCircle(int renderer, float cx, float cy, 683 float radius, int paint); 684 685 @Override 686 public void drawColor(int color) { 687 drawColor(color, PorterDuff.Mode.SRC_OVER); 688 } 689 690 @Override 691 public void drawColor(int color, PorterDuff.Mode mode) { 692 nDrawColor(mRenderer, color, mode.nativeInt); 693 } 694 695 private static native void nDrawColor(int renderer, int color, int mode); 696 697 @Override 698 public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) { 699 mLine[0] = startX; 700 mLine[1] = startY; 701 mLine[2] = stopX; 702 mLine[3] = stopY; 703 drawLines(mLine, 0, 4, paint); 704 } 705 706 @Override 707 public void drawLines(float[] pts, int offset, int count, Paint paint) { 708 if ((offset | count) < 0 || offset + count > pts.length) { 709 throw new IllegalArgumentException("The lines array must contain 4 elements per line."); 710 } 711 int modifiers = setupModifiers(paint); 712 nDrawLines(mRenderer, pts, offset, count, paint.mNativePaint); 713 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 714 } 715 716 private static native void nDrawLines(int renderer, float[] points, 717 int offset, int count, int paint); 718 719 @Override 720 public void drawLines(float[] pts, Paint paint) { 721 drawLines(pts, 0, pts.length, paint); 722 } 723 724 @Override 725 public void drawOval(RectF oval, Paint paint) { 726 int modifiers = setupModifiers(paint); 727 nDrawOval(mRenderer, oval.left, oval.top, oval.right, oval.bottom, paint.mNativePaint); 728 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 729 } 730 731 private static native void nDrawOval(int renderer, float left, float top, 732 float right, float bottom, int paint); 733 734 @Override 735 public void drawPaint(Paint paint) { 736 final Rect r = mClipBounds; 737 nGetClipBounds(mRenderer, r); 738 drawRect(r.left, r.top, r.right, r.bottom, paint); 739 } 740 741 @Override 742 public void drawPath(Path path, Paint paint) { 743 int modifiers = setupModifiers(paint); 744 if (path.isSimplePath) { 745 if (path.rects != null) { 746 nDrawRects(mRenderer, path.rects.mNativeRegion, paint.mNativePaint); 747 } 748 } else { 749 nDrawPath(mRenderer, path.mNativePath, paint.mNativePaint); 750 } 751 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 752 } 753 754 private static native void nDrawPath(int renderer, int path, int paint); 755 private static native void nDrawRects(int renderer, int region, int paint); 756 757 @Override 758 public void drawPicture(Picture picture) { 759 throw new UnsupportedOperationException(); 760 } 761 762 @Override 763 public void drawPicture(Picture picture, Rect dst) { 764 throw new UnsupportedOperationException(); 765 } 766 767 @Override 768 public void drawPicture(Picture picture, RectF dst) { 769 throw new UnsupportedOperationException(); 770 } 771 772 @Override 773 public void drawPoint(float x, float y, Paint paint) { 774 mPoint[0] = x; 775 mPoint[1] = y; 776 drawPoints(mPoint, 0, 2, paint); 777 } 778 779 @Override 780 public void drawPoints(float[] pts, Paint paint) { 781 drawPoints(pts, 0, pts.length, paint); 782 } 783 784 @Override 785 public void drawPoints(float[] pts, int offset, int count, Paint paint) { 786 int modifiers = setupModifiers(paint); 787 nDrawPoints(mRenderer, pts, offset, count, paint.mNativePaint); 788 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 789 } 790 791 private static native void nDrawPoints(int renderer, float[] points, 792 int offset, int count, int paint); 793 794 @Override 795 public void drawPosText(char[] text, int index, int count, float[] pos, Paint paint) { 796 // TODO: Implement 797 } 798 799 @Override 800 public void drawPosText(String text, float[] pos, Paint paint) { 801 // TODO: Implement 802 } 803 804 @Override 805 public void drawRect(float left, float top, float right, float bottom, Paint paint) { 806 int modifiers = setupModifiers(paint); 807 nDrawRect(mRenderer, left, top, right, bottom, paint.mNativePaint); 808 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 809 } 810 811 private static native void nDrawRect(int renderer, float left, float top, 812 float right, float bottom, int paint); 813 814 @Override 815 public void drawRect(Rect r, Paint paint) { 816 drawRect(r.left, r.top, r.right, r.bottom, paint); 817 } 818 819 @Override 820 public void drawRect(RectF r, Paint paint) { 821 drawRect(r.left, r.top, r.right, r.bottom, paint); 822 } 823 824 @Override 825 public void drawRGB(int r, int g, int b) { 826 drawColor(0xFF000000 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 827 } 828 829 @Override 830 public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) { 831 int modifiers = setupModifiers(paint); 832 nDrawRoundRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 833 rx, ry, paint.mNativePaint); 834 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 835 } 836 837 private static native void nDrawRoundRect(int renderer, float left, float top, 838 float right, float bottom, float rx, float y, int paint); 839 840 @Override 841 public void drawText(char[] text, int index, int count, float x, float y, Paint paint) { 842 if ((index | count | (index + count) | (text.length - index - count)) < 0) { 843 throw new IndexOutOfBoundsException(); 844 } 845 846 int modifiers = setupModifiers(paint); 847 try { 848 nDrawText(mRenderer, text, index, count, x, y, paint.mBidiFlags, paint.mNativePaint); 849 } finally { 850 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 851 } 852 } 853 854 private static native void nDrawText(int renderer, char[] text, int index, int count, 855 float x, float y, int bidiFlags, int paint); 856 857 @Override 858 public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) { 859 int modifiers = setupModifiers(paint); 860 try { 861 if (text instanceof String || text instanceof SpannedString || 862 text instanceof SpannableString) { 863 nDrawText(mRenderer, text.toString(), start, end, x, y, paint.mBidiFlags, 864 paint.mNativePaint); 865 } else if (text instanceof GraphicsOperations) { 866 ((GraphicsOperations) text).drawText(this, start, end, x, y, 867 paint); 868 } else { 869 char[] buf = TemporaryBuffer.obtain(end - start); 870 TextUtils.getChars(text, start, end, buf, 0); 871 nDrawText(mRenderer, buf, 0, end - start, x, y, 872 paint.mBidiFlags, paint.mNativePaint); 873 TemporaryBuffer.recycle(buf); 874 } 875 } finally { 876 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 877 } 878 } 879 880 @Override 881 public void drawText(String text, int start, int end, float x, float y, Paint paint) { 882 if ((start | end | (end - start) | (text.length() - end)) < 0) { 883 throw new IndexOutOfBoundsException(); 884 } 885 886 int modifiers = setupModifiers(paint); 887 try { 888 nDrawText(mRenderer, text, start, end, x, y, paint.mBidiFlags, paint.mNativePaint); 889 } finally { 890 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 891 } 892 } 893 894 private static native void nDrawText(int renderer, String text, int start, int end, 895 float x, float y, int bidiFlags, int paint); 896 897 @Override 898 public void drawText(String text, float x, float y, Paint paint) { 899 int modifiers = setupModifiers(paint); 900 try { 901 nDrawText(mRenderer, text, 0, text.length(), x, y, paint.mBidiFlags, 902 paint.mNativePaint); 903 } finally { 904 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 905 } 906 } 907 908 @Override 909 public void drawTextOnPath(char[] text, int index, int count, Path path, float hOffset, 910 float vOffset, Paint paint) { 911 // TODO: Implement 912 } 913 914 @Override 915 public void drawTextOnPath(String text, Path path, float hOffset, float vOffset, Paint paint) { 916 // TODO: Implement 917 } 918 919 @Override 920 public void drawTextRun(char[] text, int index, int count, int contextIndex, int contextCount, 921 float x, float y, int dir, Paint paint) { 922 if ((index | count | text.length - index - count) < 0) { 923 throw new IndexOutOfBoundsException(); 924 } 925 if (dir != DIRECTION_LTR && dir != DIRECTION_RTL) { 926 throw new IllegalArgumentException("Unknown direction: " + dir); 927 } 928 929 int modifiers = setupModifiers(paint); 930 try { 931 nDrawTextRun(mRenderer, text, index, count, contextIndex, contextCount, x, y, dir, 932 paint.mNativePaint); 933 } finally { 934 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 935 } 936 } 937 938 private static native void nDrawTextRun(int renderer, char[] text, int index, int count, 939 int contextIndex, int contextCount, float x, float y, int dir, int nativePaint); 940 941 @Override 942 public void drawTextRun(CharSequence text, int start, int end, int contextStart, int contextEnd, 943 float x, float y, int dir, Paint paint) { 944 if ((start | end | end - start | text.length() - end) < 0) { 945 throw new IndexOutOfBoundsException(); 946 } 947 948 int modifiers = setupModifiers(paint); 949 try { 950 int flags = dir == 0 ? 0 : 1; 951 if (text instanceof String || text instanceof SpannedString || 952 text instanceof SpannableString) { 953 nDrawTextRun(mRenderer, text.toString(), start, end, contextStart, 954 contextEnd, x, y, flags, paint.mNativePaint); 955 } else if (text instanceof GraphicsOperations) { 956 ((GraphicsOperations) text).drawTextRun(this, start, end, 957 contextStart, contextEnd, x, y, flags, paint); 958 } else { 959 int contextLen = contextEnd - contextStart; 960 int len = end - start; 961 char[] buf = TemporaryBuffer.obtain(contextLen); 962 TextUtils.getChars(text, contextStart, contextEnd, buf, 0); 963 nDrawTextRun(mRenderer, buf, start - contextStart, len, 0, contextLen, 964 x, y, flags, paint.mNativePaint); 965 TemporaryBuffer.recycle(buf); 966 } 967 } finally { 968 if (modifiers != MODIFIER_NONE) nResetModifiers(mRenderer, modifiers); 969 } 970 } 971 972 private static native void nDrawTextRun(int renderer, String text, int start, int end, 973 int contextStart, int contextEnd, float x, float y, int flags, int nativePaint); 974 975 @Override 976 public void drawVertices(VertexMode mode, int vertexCount, float[] verts, int vertOffset, 977 float[] texs, int texOffset, int[] colors, int colorOffset, short[] indices, 978 int indexOffset, int indexCount, Paint paint) { 979 // TODO: Implement 980 } 981 982 private int setupModifiers(Bitmap b, Paint paint) { 983 if (b.getConfig() == Bitmap.Config.ALPHA_8) { 984 return setupModifiers(paint); 985 } 986 987 final ColorFilter filter = paint.getColorFilter(); 988 if (filter != null) { 989 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 990 return MODIFIER_COLOR_FILTER; 991 } 992 993 return MODIFIER_NONE; 994 } 995 996 private int setupModifiers(Paint paint) { 997 int modifiers = MODIFIER_NONE; 998 999 if (paint.hasShadow) { 1000 nSetupShadow(mRenderer, paint.shadowRadius, paint.shadowDx, paint.shadowDy, 1001 paint.shadowColor); 1002 modifiers |= MODIFIER_SHADOW; 1003 } 1004 1005 final Shader shader = paint.getShader(); 1006 if (shader != null) { 1007 nSetupShader(mRenderer, shader.native_shader); 1008 modifiers |= MODIFIER_SHADER; 1009 } 1010 1011 final ColorFilter filter = paint.getColorFilter(); 1012 if (filter != null) { 1013 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1014 modifiers |= MODIFIER_COLOR_FILTER; 1015 } 1016 1017 return modifiers; 1018 } 1019 1020 private int setupColorFilter(Paint paint) { 1021 final ColorFilter filter = paint.getColorFilter(); 1022 if (filter != null) { 1023 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 1024 return MODIFIER_COLOR_FILTER; 1025 } 1026 return MODIFIER_NONE; 1027 } 1028 1029 private static native void nSetupShader(int renderer, int shader); 1030 private static native void nSetupColorFilter(int renderer, int colorFilter); 1031 private static native void nSetupShadow(int renderer, float radius, 1032 float dx, float dy, int color); 1033 1034 private static native void nResetModifiers(int renderer, int modifiers); 1035} 1036