GLES20Canvas.java revision db1938e0e6ef816e228c815adccebd5cb05f2aa8
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 38import javax.microedition.khronos.opengles.GL; 39 40/** 41 * An implementation of Canvas on top of OpenGL ES 2.0. 42 */ 43@SuppressWarnings({"deprecation"}) 44class GLES20Canvas extends Canvas { 45 @SuppressWarnings({"FieldCanBeLocal", "UnusedDeclaration"}) 46 private final GL mGl; 47 private final boolean mOpaque; 48 private final int mRenderer; 49 50 private int mWidth; 51 private int mHeight; 52 53 private final float[] mPoint = new float[2]; 54 private final float[] mLine = new float[4]; 55 56 private final Rect mClipBounds = new Rect(); 57 58 private DrawFilter mFilter; 59 60 /////////////////////////////////////////////////////////////////////////// 61 // Constructors 62 /////////////////////////////////////////////////////////////////////////// 63 64 GLES20Canvas(GL gl, boolean translucent) { 65 mGl = gl; 66 mOpaque = !translucent; 67 68 mRenderer = nCreateRenderer(); 69 } 70 71 private native int nCreateRenderer(); 72 73 @Override 74 protected void finalize() throws Throwable { 75 try { 76 super.finalize(); 77 } finally { 78 nDestroyRenderer(mRenderer); 79 } 80 } 81 82 private native void nDestroyRenderer(int renderer); 83 84 /////////////////////////////////////////////////////////////////////////// 85 // Canvas management 86 /////////////////////////////////////////////////////////////////////////// 87 88 @Override 89 public boolean isHardwareAccelerated() { 90 return true; 91 } 92 93 @Override 94 public GL getGL() { 95 throw new UnsupportedOperationException(); 96 } 97 98 @Override 99 public void setBitmap(Bitmap bitmap) { 100 throw new UnsupportedOperationException(); 101 } 102 103 @Override 104 public boolean isOpaque() { 105 return mOpaque; 106 } 107 108 @Override 109 public int getWidth() { 110 return mWidth; 111 } 112 113 @Override 114 public int getHeight() { 115 return mHeight; 116 } 117 118 /////////////////////////////////////////////////////////////////////////// 119 // Setup 120 /////////////////////////////////////////////////////////////////////////// 121 122 @Override 123 public void setViewport(int width, int height) { 124 mWidth = width; 125 mHeight = height; 126 127 nSetViewport(mRenderer, width, height); 128 } 129 130 private native void nSetViewport(int renderer, int width, int height); 131 132 void onPreDraw() { 133 nPrepare(mRenderer); 134 } 135 136 private native void nPrepare(int renderer); 137 138 /////////////////////////////////////////////////////////////////////////// 139 // Clipping 140 /////////////////////////////////////////////////////////////////////////// 141 142 @Override 143 public boolean clipPath(Path path) { 144 throw new UnsupportedOperationException(); 145 } 146 147 @Override 148 public boolean clipPath(Path path, Region.Op op) { 149 throw new UnsupportedOperationException(); 150 } 151 152 @Override 153 public boolean clipRect(float left, float top, float right, float bottom) { 154 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 155 } 156 157 private native boolean nClipRect(int renderer, float left, float top, 158 float right, float bottom, int op); 159 160 @Override 161 public boolean clipRect(float left, float top, float right, float bottom, Region.Op op) { 162 return nClipRect(mRenderer, left, top, right, bottom, op.nativeInt); 163 } 164 165 @Override 166 public boolean clipRect(int left, int top, int right, int bottom) { 167 return nClipRect(mRenderer, left, top, right, bottom, Region.Op.INTERSECT.nativeInt); 168 } 169 170 private native boolean nClipRect(int renderer, int left, int top, int right, int bottom, int op); 171 172 @Override 173 public boolean clipRect(Rect rect) { 174 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 175 Region.Op.INTERSECT.nativeInt); 176 } 177 178 @Override 179 public boolean clipRect(Rect rect, Region.Op op) { 180 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 181 } 182 183 @Override 184 public boolean clipRect(RectF rect) { 185 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, 186 Region.Op.INTERSECT.nativeInt); 187 } 188 189 @Override 190 public boolean clipRect(RectF rect, Region.Op op) { 191 return nClipRect(mRenderer, rect.left, rect.top, rect.right, rect.bottom, op.nativeInt); 192 } 193 194 @Override 195 public boolean clipRegion(Region region) { 196 throw new UnsupportedOperationException(); 197 } 198 199 @Override 200 public boolean clipRegion(Region region, Region.Op op) { 201 throw new UnsupportedOperationException(); 202 } 203 204 @Override 205 public boolean getClipBounds(Rect bounds) { 206 return nGetClipBounds(mRenderer, bounds); 207 } 208 209 private native boolean nGetClipBounds(int renderer, Rect bounds); 210 211 @Override 212 public boolean quickReject(float left, float top, float right, float bottom, EdgeType type) { 213 return nQuickReject(mRenderer, left, top, right, bottom, type.nativeInt); 214 } 215 216 private native boolean nQuickReject(int renderer, float left, float top, 217 float right, float bottom, int edge); 218 219 @Override 220 public boolean quickReject(Path path, EdgeType type) { 221 throw new UnsupportedOperationException(); 222 } 223 224 @Override 225 public boolean quickReject(RectF rect, EdgeType type) { 226 return quickReject(rect.left, rect.top, rect.right, rect.bottom, type); 227 } 228 229 /////////////////////////////////////////////////////////////////////////// 230 // Transformations 231 /////////////////////////////////////////////////////////////////////////// 232 233 @Override 234 public void translate(float dx, float dy) { 235 nTranslate(mRenderer, dx, dy); 236 } 237 238 private native void nTranslate(int renderer, float dx, float dy); 239 240 @Override 241 public void skew(float sx, float sy) { 242 throw new UnsupportedOperationException(); 243 } 244 245 @Override 246 public void rotate(float degrees) { 247 nRotate(mRenderer, degrees); 248 } 249 250 private native void nRotate(int renderer, float degrees); 251 252 @Override 253 public void scale(float sx, float sy) { 254 nScale(mRenderer, sx, sy); 255 } 256 257 private native void nScale(int renderer, float sx, float sy); 258 259 @Override 260 public void setMatrix(Matrix matrix) { 261 nSetMatrix(mRenderer, matrix.native_instance); 262 } 263 264 private native void nSetMatrix(int renderer, int matrix); 265 266 @Override 267 public void getMatrix(Matrix matrix) { 268 nGetMatrix(mRenderer, matrix.native_instance); 269 } 270 271 private native void nGetMatrix(int renderer, int matrix); 272 273 @Override 274 public void concat(Matrix matrix) { 275 nConcatMatrix(mRenderer, matrix.native_instance); 276 } 277 278 private native void nConcatMatrix(int renderer, int matrix); 279 280 /////////////////////////////////////////////////////////////////////////// 281 // State management 282 /////////////////////////////////////////////////////////////////////////// 283 284 @Override 285 public int save() { 286 return nSave(mRenderer, 0); 287 } 288 289 @Override 290 public int save(int saveFlags) { 291 return nSave(mRenderer, saveFlags); 292 } 293 294 private native int nSave(int renderer, int flags); 295 296 @Override 297 public int saveLayer(RectF bounds, Paint paint, int saveFlags) { 298 return saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom, paint, saveFlags); 299 } 300 301 @Override 302 public int saveLayer(float left, float top, float right, float bottom, Paint paint, 303 int saveFlags) { 304 int nativePaint = paint == null ? 0 : paint.mNativePaint; 305 return nSaveLayer(mRenderer, left, top, right, bottom, nativePaint, saveFlags); 306 } 307 308 private native int nSaveLayer(int renderer, float left, float top, float right, float bottom, 309 int paint, int saveFlags); 310 311 @Override 312 public int saveLayerAlpha(RectF bounds, int alpha, int saveFlags) { 313 return saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom, 314 alpha, saveFlags); 315 } 316 317 @Override 318 public int saveLayerAlpha(float left, float top, float right, float bottom, int alpha, 319 int saveFlags) { 320 return nSaveLayerAlpha(mRenderer, left, top, right, bottom, alpha, saveFlags); 321 } 322 323 private native int nSaveLayerAlpha(int renderer, float left, float top, float right, 324 float bottom, int alpha, int saveFlags); 325 326 @Override 327 public void restore() { 328 nRestore(mRenderer); 329 } 330 331 private native void nRestore(int renderer); 332 333 @Override 334 public void restoreToCount(int saveCount) { 335 nRestoreToCount(mRenderer, saveCount); 336 } 337 338 private native void nRestoreToCount(int renderer, int saveCount); 339 340 @Override 341 public int getSaveCount() { 342 return nGetSaveCount(mRenderer); 343 } 344 345 private native int nGetSaveCount(int renderer); 346 347 /////////////////////////////////////////////////////////////////////////// 348 // Filtering 349 /////////////////////////////////////////////////////////////////////////// 350 351 @Override 352 public void setDrawFilter(DrawFilter filter) { 353 // TODO: Implement PaintDrawFilter 354 mFilter = filter; 355 } 356 357 @Override 358 public DrawFilter getDrawFilter() { 359 return mFilter; 360 } 361 362 /////////////////////////////////////////////////////////////////////////// 363 // Drawing 364 /////////////////////////////////////////////////////////////////////////// 365 366 @Override 367 public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, 368 Paint paint) { 369 throw new UnsupportedOperationException(); 370 } 371 372 @Override 373 public void drawARGB(int a, int r, int g, int b) { 374 drawColor((a & 0xFF) << 24 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 375 } 376 377 @Override 378 public void drawPatch(Bitmap bitmap, byte[] chunks, RectF dst, Paint paint) { 379 // Shaders are ignored when drawing patches 380 boolean hasColorFilter = paint != null && setupColorFilter(paint); 381 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 382 nDrawPatch(mRenderer, bitmap.mNativeBitmap, chunks, dst.left, dst.top, 383 dst.right, dst.bottom, nativePaint); 384 if (hasColorFilter) nResetModifiers(mRenderer); 385 } 386 387 private native void nDrawPatch(int renderer, int bitmap, byte[] chunks, float left, float top, 388 float right, float bottom, int paint); 389 390 @Override 391 public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) { 392 // Shaders are ignored when drawing bitmaps 393 boolean hasColorFilter = paint != null && setupColorFilter(paint); 394 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 395 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, left, top, nativePaint); 396 if (hasColorFilter) nResetModifiers(mRenderer); 397 } 398 399 private native void nDrawBitmap(int renderer, int bitmap, float left, float top, int paint); 400 401 @Override 402 public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) { 403 // Shaders are ignored when drawing bitmaps 404 boolean hasColorFilter = paint != null && setupColorFilter(paint); 405 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 406 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, matrix.native_instance, nativePaint); 407 if (hasColorFilter) nResetModifiers(mRenderer); 408 } 409 410 private native void nDrawBitmap(int renderer, int bitmap, int matrix, int paint); 411 412 @Override 413 public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) { 414 // Shaders are ignored when drawing bitmaps 415 boolean hasColorFilter = paint != null && setupColorFilter(paint); 416 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 417 418 int left, top, right, bottom; 419 if (src == null) { 420 left = top = 0; 421 right = bitmap.getWidth(); 422 bottom = bitmap.getHeight(); 423 } else { 424 left = src.left; 425 right = src.right; 426 top = src.top; 427 bottom = src.bottom; 428 } 429 430 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, left, top, right, bottom, 431 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 432 if (hasColorFilter) nResetModifiers(mRenderer); 433 } 434 435 @Override 436 public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) { 437 // Shaders are ignored when drawing bitmaps 438 boolean hasColorFilter = paint != null && setupColorFilter(paint); 439 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 440 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, src.left, src.top, src.right, src.bottom, 441 dst.left, dst.top, dst.right, dst.bottom, nativePaint); 442 if (hasColorFilter) nResetModifiers(mRenderer); 443 } 444 445 private native void nDrawBitmap(int renderer, int bitmap, 446 float srcLeft, float srcTop, float srcRight, float srcBottom, 447 float left, float top, float right, float bottom, int paint); 448 449 @Override 450 public void drawBitmap(int[] colors, int offset, int stride, float x, float y, 451 int width, int height, boolean hasAlpha, Paint paint) { 452 // Shaders are ignored when drawing bitmaps 453 boolean hasColorFilter = paint != null && setupColorFilter(paint); 454 final Bitmap.Config config = hasAlpha ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; 455 final Bitmap b = Bitmap.createBitmap(colors, offset, stride, width, height, config); 456 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 457 nDrawBitmap(mRenderer, b.mNativeBitmap, x, y, nativePaint); 458 b.recycle(); 459 if (hasColorFilter) nResetModifiers(mRenderer); 460 } 461 462 @Override 463 public void drawBitmap(int[] colors, int offset, int stride, int x, int y, 464 int width, int height, boolean hasAlpha, Paint paint) { 465 // Shaders are ignored when drawing bitmaps 466 drawBitmap(colors, offset, stride, (float) x, (float) y, width, height, hasAlpha, paint); 467 } 468 469 @Override 470 public void drawBitmapMesh(Bitmap bitmap, int meshWidth, int meshHeight, float[] verts, 471 int vertOffset, int[] colors, int colorOffset, Paint paint) { 472 // TODO: Implement 473 } 474 475 @Override 476 public void drawCircle(float cx, float cy, float radius, Paint paint) { 477 throw new UnsupportedOperationException(); 478 } 479 480 @Override 481 public void drawColor(int color) { 482 drawColor(color, PorterDuff.Mode.SRC_OVER); 483 } 484 485 @Override 486 public void drawColor(int color, PorterDuff.Mode mode) { 487 nDrawColor(mRenderer, color, mode.nativeInt); 488 } 489 490 private native void nDrawColor(int renderer, int color, int mode); 491 492 @Override 493 public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) { 494 mLine[0] = startX; 495 mLine[1] = startY; 496 mLine[2] = stopX; 497 mLine[3] = stopY; 498 drawLines(mLine, 0, 1, paint); 499 } 500 501 @Override 502 public void drawLines(float[] pts, int offset, int count, Paint paint) { 503 // TODO: Implement 504 } 505 506 @Override 507 public void drawLines(float[] pts, Paint paint) { 508 drawLines(pts, 0, pts.length / 4, paint); 509 } 510 511 @Override 512 public void drawOval(RectF oval, Paint paint) { 513 throw new UnsupportedOperationException(); 514 } 515 516 @Override 517 public void drawPaint(Paint paint) { 518 final Rect r = mClipBounds; 519 nGetClipBounds(mRenderer, r); 520 drawRect(r.left, r.top, r.right, r.bottom, paint); 521 } 522 523 @Override 524 public void drawPath(Path path, Paint paint) { 525 throw new UnsupportedOperationException(); 526 } 527 528 @Override 529 public void drawPicture(Picture picture) { 530 throw new UnsupportedOperationException(); 531 } 532 533 @Override 534 public void drawPicture(Picture picture, Rect dst) { 535 throw new UnsupportedOperationException(); 536 } 537 538 @Override 539 public void drawPicture(Picture picture, RectF dst) { 540 throw new UnsupportedOperationException(); 541 } 542 543 @Override 544 public void drawPoint(float x, float y, Paint paint) { 545 mPoint[0] = x; 546 mPoint[1] = y; 547 drawPoints(mPoint, 0, 1, paint); 548 } 549 550 @Override 551 public void drawPoints(float[] pts, int offset, int count, Paint paint) { 552 // TODO: Implement 553 } 554 555 @Override 556 public void drawPoints(float[] pts, Paint paint) { 557 drawPoints(pts, 0, pts.length / 2, paint); 558 } 559 560 @Override 561 public void drawPosText(char[] text, int index, int count, float[] pos, Paint paint) { 562 throw new UnsupportedOperationException(); 563 } 564 565 @Override 566 public void drawPosText(String text, float[] pos, Paint paint) { 567 throw new UnsupportedOperationException(); 568 } 569 570 @Override 571 public void drawRect(float left, float top, float right, float bottom, Paint paint) { 572 boolean hasModifier = setupModifiers(paint); 573 nDrawRect(mRenderer, left, top, right, bottom, paint.mNativePaint); 574 if (hasModifier) nResetModifiers(mRenderer); 575 } 576 577 private native void nDrawRect(int renderer, float left, float top, float right, float bottom, 578 int paint); 579 580 @Override 581 public void drawRect(Rect r, Paint paint) { 582 drawRect(r.left, r.top, r.right, r.bottom, paint); 583 } 584 585 @Override 586 public void drawRect(RectF r, Paint paint) { 587 drawRect(r.left, r.top, r.right, r.bottom, paint); 588 } 589 590 @Override 591 public void drawRGB(int r, int g, int b) { 592 drawColor(0xFF000000 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 593 } 594 595 @Override 596 public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) { 597 // TODO: Implement 598 } 599 600 @Override 601 public void drawText(char[] text, int index, int count, float x, float y, Paint paint) { 602 if ((index | count | (index + count) | (text.length - index - count)) < 0) { 603 throw new IndexOutOfBoundsException(); 604 } 605 boolean hasModifier = setupModifiers(paint); 606 nDrawText(mRenderer, text, index, count, x, y, paint.mBidiFlags, paint.mNativePaint); 607 if (hasModifier) nResetModifiers(mRenderer); 608 } 609 610 private native void nDrawText(int renderer, char[] text, int index, int count, float x, float y, 611 int bidiFlags, int paint); 612 613 @Override 614 public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) { 615 boolean hasModifier = setupModifiers(paint); 616 if (text instanceof String || text instanceof SpannedString || 617 text instanceof SpannableString) { 618 nDrawText(mRenderer, text.toString(), start, end, x, y, paint.mBidiFlags, 619 paint.mNativePaint); 620 } else if (text instanceof GraphicsOperations) { 621 ((GraphicsOperations) text).drawText(this, start, end, x, y, 622 paint); 623 } else { 624 char[] buf = TemporaryBuffer.obtain(end - start); 625 TextUtils.getChars(text, start, end, buf, 0); 626 nDrawText(mRenderer, buf, 0, end - start, x, y, paint.mBidiFlags, paint.mNativePaint); 627 TemporaryBuffer.recycle(buf); 628 } 629 if (hasModifier) nResetModifiers(mRenderer); 630 } 631 632 @Override 633 public void drawText(String text, int start, int end, float x, float y, Paint paint) { 634 if ((start | end | (end - start) | (text.length() - end)) < 0) { 635 throw new IndexOutOfBoundsException(); 636 } 637 boolean hasModifier = setupModifiers(paint); 638 nDrawText(mRenderer, text, start, end, x, y, paint.mBidiFlags, paint.mNativePaint); 639 if (hasModifier) nResetModifiers(mRenderer); 640 } 641 642 private native void nDrawText(int renderer, String text, int start, int end, float x, float y, 643 int bidiFlags, int paint); 644 645 @Override 646 public void drawText(String text, float x, float y, Paint paint) { 647 boolean hasModifier = setupModifiers(paint); 648 nDrawText(mRenderer, text, 0, text.length(), x, y, paint.mBidiFlags, paint.mNativePaint); 649 if (hasModifier) nResetModifiers(mRenderer); 650 } 651 652 @Override 653 public void drawTextOnPath(char[] text, int index, int count, Path path, float hOffset, 654 float vOffset, Paint paint) { 655 throw new UnsupportedOperationException(); 656 } 657 658 @Override 659 public void drawTextOnPath(String text, Path path, float hOffset, float vOffset, Paint paint) { 660 throw new UnsupportedOperationException(); 661 } 662 663 @Override 664 public void drawTextRun(char[] text, int index, int count, int contextIndex, int contextCount, 665 float x, float y, int dir, Paint paint) { 666 throw new UnsupportedOperationException(); 667 } 668 669 @Override 670 public void drawTextRun(CharSequence text, int start, int end, int contextStart, int contextEnd, 671 float x, float y, int dir, Paint paint) { 672 throw new UnsupportedOperationException(); 673 } 674 675 @Override 676 public void drawVertices(VertexMode mode, int vertexCount, float[] verts, int vertOffset, 677 float[] texs, int texOffset, int[] colors, int colorOffset, short[] indices, 678 int indexOffset, int indexCount, Paint paint) { 679 // TODO: Implement 680 } 681 682 private boolean setupModifiers(Paint paint) { 683 boolean hasModifier = false; 684 685 final Shader shader = paint.getShader(); 686 if (shader != null) { 687 nSetupShader(mRenderer, shader.native_shader); 688 hasModifier = true; 689 } 690 691 final ColorFilter filter = paint.getColorFilter(); 692 if (filter != null) { 693 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 694 hasModifier = true; 695 } 696 697 return hasModifier; 698 } 699 700 private boolean setupColorFilter(Paint paint) { 701 final ColorFilter filter = paint.getColorFilter(); 702 if (filter != null) { 703 nSetupColorFilter(mRenderer, filter.nativeColorFilter); 704 return true; 705 } 706 return false; 707 } 708 709 private native void nSetupShader(int renderer, int shader); 710 private native void nSetupColorFilter(int renderer, int colorFilter); 711 private native void nResetModifiers(int renderer); 712} 713