GLES20Canvas.java revision d27977d1a91d5a6b3cc9fa7664ac7e835e7bd895
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.BitmapShader; 21import android.graphics.Canvas; 22import android.graphics.DrawFilter; 23import android.graphics.LinearGradient; 24import android.graphics.Matrix; 25import android.graphics.Paint; 26import android.graphics.Path; 27import android.graphics.Picture; 28import android.graphics.PorterDuff; 29import android.graphics.RadialGradient; 30import android.graphics.Rect; 31import android.graphics.RectF; 32import android.graphics.Region; 33import android.graphics.Shader; 34import android.graphics.SweepGradient; 35 36import javax.microedition.khronos.opengles.GL; 37 38/** 39 * An implementation of Canvas on top of OpenGL ES 2.0. 40 */ 41@SuppressWarnings({"deprecation"}) 42class GLES20Canvas extends Canvas { 43 @SuppressWarnings({"FieldCanBeLocal", "UnusedDeclaration"}) 44 private final GL mGl; 45 private final boolean mOpaque; 46 private final int mRenderer; 47 48 private int mWidth; 49 private int mHeight; 50 51 private final float[] mPoint = new float[2]; 52 private final float[] mLine = new float[4]; 53 54 private final Rect mClipBounds = new Rect(); 55 56 private DrawFilter mFilter; 57 58 /////////////////////////////////////////////////////////////////////////// 59 // Constructors 60 /////////////////////////////////////////////////////////////////////////// 61 62 GLES20Canvas(GL gl, boolean translucent) { 63 mGl = gl; 64 mOpaque = !translucent; 65 66 mRenderer = nCreateRenderer(); 67 } 68 69 private native int nCreateRenderer(); 70 71 @Override 72 protected void finalize() throws Throwable { 73 try { 74 super.finalize(); 75 } finally { 76 nDestroyRenderer(mRenderer); 77 } 78 } 79 80 private native void nDestroyRenderer(int renderer); 81 82 /////////////////////////////////////////////////////////////////////////// 83 // Canvas management 84 /////////////////////////////////////////////////////////////////////////// 85 86 @Override 87 public boolean isHardwareAccelerated() { 88 return true; 89 } 90 91 @Override 92 public GL getGL() { 93 throw new UnsupportedOperationException(); 94 } 95 96 @Override 97 public void setBitmap(Bitmap bitmap) { 98 throw new UnsupportedOperationException(); 99 } 100 101 @Override 102 public boolean isOpaque() { 103 return mOpaque; 104 } 105 106 @Override 107 public int getWidth() { 108 return mWidth; 109 } 110 111 @Override 112 public int getHeight() { 113 return mHeight; 114 } 115 116 /////////////////////////////////////////////////////////////////////////// 117 // Setup 118 /////////////////////////////////////////////////////////////////////////// 119 120 @Override 121 public void setViewport(int width, int height) { 122 mWidth = width; 123 mHeight = height; 124 125 nSetViewport(mRenderer, width, height); 126 } 127 128 private native void nSetViewport(int renderer, int width, int height); 129 130 void onPreDraw() { 131 nPrepare(mRenderer); 132 } 133 134 private native void nPrepare(int renderer); 135 136 /////////////////////////////////////////////////////////////////////////// 137 // Clipping 138 /////////////////////////////////////////////////////////////////////////// 139 140 @Override 141 public boolean clipPath(Path path) { 142 throw new UnsupportedOperationException(); 143 } 144 145 @Override 146 public boolean clipPath(Path path, Region.Op op) { 147 throw new UnsupportedOperationException(); 148 } 149 150 @Override 151 public boolean clipRect(float left, float top, float right, float bottom) { 152 return nClipRect(mRenderer, left, top, right, bottom); 153 } 154 155 private native boolean nClipRect(int renderer, float left, float top, float right, float bottom); 156 157 @Override 158 public boolean clipRect(float left, float top, float right, float bottom, Region.Op op) { 159 throw new UnsupportedOperationException(); 160 } 161 162 @Override 163 public boolean clipRect(int left, int top, int right, int bottom) { 164 return nClipRect(mRenderer, left, top, right, bottom); 165 } 166 167 private native boolean nClipRect(int renderer, int left, int top, int right, int bottom); 168 169 @Override 170 public boolean clipRect(Rect rect) { 171 return clipRect(rect.left, rect.top, rect.right, rect.bottom); 172 } 173 174 @Override 175 public boolean clipRect(Rect rect, Region.Op op) { 176 // TODO: Implement 177 throw new UnsupportedOperationException(); 178 } 179 180 @Override 181 public boolean clipRect(RectF rect) { 182 return clipRect(rect.left, rect.top, rect.right, rect.bottom); 183 } 184 185 @Override 186 public boolean clipRect(RectF rect, Region.Op op) { 187 // TODO: Implement 188 throw new UnsupportedOperationException(); 189 } 190 191 @Override 192 public boolean clipRegion(Region region) { 193 throw new UnsupportedOperationException(); 194 } 195 196 @Override 197 public boolean clipRegion(Region region, Region.Op op) { 198 throw new UnsupportedOperationException(); 199 } 200 201 @Override 202 public boolean getClipBounds(Rect bounds) { 203 return nGetClipBounds(mRenderer, bounds); 204 } 205 206 private native boolean nGetClipBounds(int renderer, Rect bounds); 207 208 @Override 209 public boolean quickReject(float left, float top, float right, float bottom, EdgeType type) { 210 return nQuickReject(mRenderer, left, top, right, bottom, type.nativeInt); 211 } 212 213 private native boolean nQuickReject(int renderer, float left, float top, 214 float right, float bottom, int edge); 215 216 @Override 217 public boolean quickReject(Path path, EdgeType type) { 218 throw new UnsupportedOperationException(); 219 } 220 221 @Override 222 public boolean quickReject(RectF rect, EdgeType type) { 223 return quickReject(rect.left, rect.top, rect.right, rect.bottom, type); 224 } 225 226 /////////////////////////////////////////////////////////////////////////// 227 // Transformations 228 /////////////////////////////////////////////////////////////////////////// 229 230 @Override 231 public void translate(float dx, float dy) { 232 nTranslate(mRenderer, dx, dy); 233 } 234 235 private native void nTranslate(int renderer, float dx, float dy); 236 237 @Override 238 public void skew(float sx, float sy) { 239 throw new UnsupportedOperationException(); 240 } 241 242 @Override 243 public void rotate(float degrees) { 244 nRotate(mRenderer, degrees); 245 } 246 247 private native void nRotate(int renderer, float degrees); 248 249 @Override 250 public void scale(float sx, float sy) { 251 nScale(mRenderer, sx, sy); 252 } 253 254 private native void nScale(int renderer, float sx, float sy); 255 256 @Override 257 public void setMatrix(Matrix matrix) { 258 nSetMatrix(mRenderer, matrix.native_instance); 259 } 260 261 private native void nSetMatrix(int renderer, int matrix); 262 263 @Override 264 public void getMatrix(Matrix matrix) { 265 nGetMatrix(mRenderer, matrix.native_instance); 266 } 267 268 private native void nGetMatrix(int renderer, int matrix); 269 270 @Override 271 public void concat(Matrix matrix) { 272 nConcatMatrix(mRenderer, matrix.native_instance); 273 } 274 275 private native void nConcatMatrix(int renderer, int matrix); 276 277 /////////////////////////////////////////////////////////////////////////// 278 // State management 279 /////////////////////////////////////////////////////////////////////////// 280 281 @Override 282 public int save() { 283 return nSave(mRenderer, 0); 284 } 285 286 @Override 287 public int save(int saveFlags) { 288 return nSave(mRenderer, saveFlags); 289 } 290 291 private native int nSave(int renderer, int flags); 292 293 @Override 294 public int saveLayer(RectF bounds, Paint paint, int saveFlags) { 295 return saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom, paint, saveFlags); 296 } 297 298 @Override 299 public int saveLayer(float left, float top, float right, float bottom, Paint paint, 300 int saveFlags) { 301 int nativePaint = paint == null ? 0 : paint.mNativePaint; 302 return nSaveLayer(mRenderer, left, top, right, bottom, nativePaint, saveFlags); 303 } 304 305 private native int nSaveLayer(int renderer, float left, float top, float right, float bottom, 306 int paint, int saveFlags); 307 308 @Override 309 public int saveLayerAlpha(RectF bounds, int alpha, int saveFlags) { 310 return saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom, 311 alpha, saveFlags); 312 } 313 314 @Override 315 public int saveLayerAlpha(float left, float top, float right, float bottom, int alpha, 316 int saveFlags) { 317 return nSaveLayerAlpha(mRenderer, left, top, right, bottom, alpha, saveFlags); 318 } 319 320 private native int nSaveLayerAlpha(int renderer, float left, float top, float right, 321 float bottom, int alpha, int saveFlags); 322 323 @Override 324 public void restore() { 325 nRestore(mRenderer); 326 } 327 328 private native void nRestore(int renderer); 329 330 @Override 331 public void restoreToCount(int saveCount) { 332 nRestoreToCount(mRenderer, saveCount); 333 } 334 335 private native void nRestoreToCount(int renderer, int saveCount); 336 337 @Override 338 public int getSaveCount() { 339 return nGetSaveCount(mRenderer); 340 } 341 342 private native int nGetSaveCount(int renderer); 343 344 /////////////////////////////////////////////////////////////////////////// 345 // Filtering 346 /////////////////////////////////////////////////////////////////////////// 347 348 @Override 349 public void setDrawFilter(DrawFilter filter) { 350 // Don't crash, but ignore the draw filter 351 // TODO: Implement PaintDrawFilter 352 mFilter = filter; 353 } 354 355 @Override 356 public DrawFilter getDrawFilter() { 357 return mFilter; 358 } 359 360 /////////////////////////////////////////////////////////////////////////// 361 // Drawing 362 /////////////////////////////////////////////////////////////////////////// 363 364 @Override 365 public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, 366 Paint paint) { 367 throw new UnsupportedOperationException(); 368 } 369 370 @Override 371 public void drawARGB(int a, int r, int g, int b) { 372 drawColor((a & 0xFF) << 24 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 373 } 374 375 @Override 376 public void drawPatch(Bitmap bitmap, byte[] chunks, RectF dst, Paint paint) { 377 // Shaders are ignored when drawing patches 378 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 379 nDrawPatch(mRenderer, bitmap.mNativeBitmap, chunks, dst.left, dst.top, 380 dst.right, dst.bottom, nativePaint); 381 } 382 383 private native void nDrawPatch(int renderer, int bitmap, byte[] chunks, float left, float top, 384 float right, float bottom, int paint); 385 386 @Override 387 public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) { 388 // Shaders are ignored when drawing bitmaps 389 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 390 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, left, top, nativePaint); 391 } 392 393 private native void nDrawBitmap(int renderer, int bitmap, float left, float top, int paint); 394 395 @Override 396 public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) { 397 // Shaders are ignored when drawing bitmaps 398 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 399 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, matrix.native_instance, nativePaint); 400 } 401 402 private native void nDrawBitmap(int renderer, int bitmap, int matrix, int paint); 403 404 @Override 405 public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) { 406 // Shaders are ignored when drawing bitmaps 407 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 408 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, src.left, src.top, src.right, src.bottom, 409 dst.left, dst.top, dst.right, dst.bottom, nativePaint 410 ); 411 } 412 413 @Override 414 public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) { 415 // Shaders are ignored when drawing bitmaps 416 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 417 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, src.left, src.top, src.right, src.bottom, 418 dst.left, dst.top, dst.right, dst.bottom, nativePaint 419 ); 420 } 421 422 private native void nDrawBitmap(int renderer, int bitmap, 423 float srcLeft, float srcTop, float srcRight, float srcBottom, 424 float left, float top, float right, float bottom, int paint); 425 426 @Override 427 public void drawBitmap(int[] colors, int offset, int stride, float x, float y, 428 int width, int height, boolean hasAlpha, Paint paint) { 429 // Shaders are ignored when drawing bitmaps 430 final Bitmap.Config config = hasAlpha ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; 431 final Bitmap b = Bitmap.createBitmap(colors, offset, stride, width, height, config); 432 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 433 nDrawBitmap(mRenderer, b.mNativeBitmap, x, y, nativePaint); 434 b.recycle(); 435 } 436 437 @Override 438 public void drawBitmap(int[] colors, int offset, int stride, int x, int y, 439 int width, int height, boolean hasAlpha, Paint paint) { 440 // Shaders are ignored when drawing bitmaps 441 drawBitmap(colors, offset, stride, (float) x, (float) y, width, height, hasAlpha, paint); 442 } 443 444 @Override 445 public void drawBitmapMesh(Bitmap bitmap, int meshWidth, int meshHeight, float[] verts, 446 int vertOffset, int[] colors, int colorOffset, Paint paint) { 447 // TODO: Implement 448 } 449 450 @Override 451 public void drawCircle(float cx, float cy, float radius, Paint paint) { 452 throw new UnsupportedOperationException(); 453 } 454 455 @Override 456 public void drawColor(int color) { 457 drawColor(color, PorterDuff.Mode.SRC_OVER); 458 } 459 460 @Override 461 public void drawColor(int color, PorterDuff.Mode mode) { 462 nDrawColor(mRenderer, color, mode.nativeInt); 463 } 464 465 private native void nDrawColor(int renderer, int color, int mode); 466 467 @Override 468 public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) { 469 mLine[0] = startX; 470 mLine[1] = startY; 471 mLine[2] = stopX; 472 mLine[3] = stopY; 473 drawLines(mLine, 0, 1, paint); 474 } 475 476 @Override 477 public void drawLines(float[] pts, int offset, int count, Paint paint) { 478 // TODO: Implement 479 } 480 481 @Override 482 public void drawLines(float[] pts, Paint paint) { 483 drawLines(pts, 0, pts.length / 4, paint); 484 } 485 486 @Override 487 public void drawOval(RectF oval, Paint paint) { 488 throw new UnsupportedOperationException(); 489 } 490 491 @Override 492 public void drawPaint(Paint paint) { 493 final Rect r = mClipBounds; 494 nGetClipBounds(mRenderer, r); 495 drawRect(r.left, r.top, r.right, r.bottom, paint); 496 } 497 498 @Override 499 public void drawPath(Path path, Paint paint) { 500 throw new UnsupportedOperationException(); 501 } 502 503 @Override 504 public void drawPicture(Picture picture) { 505 throw new UnsupportedOperationException(); 506 } 507 508 @Override 509 public void drawPicture(Picture picture, Rect dst) { 510 throw new UnsupportedOperationException(); 511 } 512 513 @Override 514 public void drawPicture(Picture picture, RectF dst) { 515 throw new UnsupportedOperationException(); 516 } 517 518 @Override 519 public void drawPoint(float x, float y, Paint paint) { 520 mPoint[0] = x; 521 mPoint[1] = y; 522 drawPoints(mPoint, 0, 1, paint); 523 } 524 525 @Override 526 public void drawPoints(float[] pts, int offset, int count, Paint paint) { 527 // TODO: Implement 528 } 529 530 @Override 531 public void drawPoints(float[] pts, Paint paint) { 532 drawPoints(pts, 0, pts.length / 2, paint); 533 } 534 535 @Override 536 public void drawPosText(char[] text, int index, int count, float[] pos, Paint paint) { 537 throw new UnsupportedOperationException(); 538 } 539 540 @Override 541 public void drawPosText(String text, float[] pos, Paint paint) { 542 throw new UnsupportedOperationException(); 543 } 544 545 @Override 546 public void drawRect(float left, float top, float right, float bottom, Paint paint) { 547 boolean hasShader = setupShader(paint); 548 nDrawRect(mRenderer, left, top, right, bottom, paint.mNativePaint); 549 if (hasShader) nResetShader(mRenderer); 550 } 551 552 private native void nDrawRect(int renderer, float left, float top, float right, float bottom, 553 int paint); 554 555 @Override 556 public void drawRect(Rect r, Paint paint) { 557 drawRect(r.left, r.top, r.right, r.bottom, paint); 558 } 559 560 @Override 561 public void drawRect(RectF r, Paint paint) { 562 drawRect(r.left, r.top, r.right, r.bottom, paint); 563 } 564 565 @Override 566 public void drawRGB(int r, int g, int b) { 567 drawColor(0xFF000000 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 568 } 569 570 @Override 571 public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) { 572 // TODO: Implement 573 } 574 575 @Override 576 public void drawText(char[] text, int index, int count, float x, float y, Paint paint) { 577 // TODO: Implement 578 } 579 580 @Override 581 public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) { 582 // TODO: Implement 583 } 584 585 @Override 586 public void drawText(String text, int start, int end, float x, float y, Paint paint) { 587 // TODO: Implement 588 } 589 590 @Override 591 public void drawText(String text, float x, float y, Paint paint) { 592 drawText(text, 0, text.length(), x, y, paint); 593 } 594 595 @Override 596 public void drawTextOnPath(char[] text, int index, int count, Path path, float hOffset, 597 float vOffset, Paint paint) { 598 throw new UnsupportedOperationException(); 599 } 600 601 @Override 602 public void drawTextOnPath(String text, Path path, float hOffset, float vOffset, Paint paint) { 603 throw new UnsupportedOperationException(); 604 } 605 606 @Override 607 public void drawTextRun(char[] text, int index, int count, int contextIndex, int contextCount, 608 float x, float y, int dir, Paint paint) { 609 throw new UnsupportedOperationException(); 610 } 611 612 @Override 613 public void drawTextRun(CharSequence text, int start, int end, int contextStart, int contextEnd, 614 float x, float y, int dir, Paint paint) { 615 throw new UnsupportedOperationException(); 616 } 617 618 @Override 619 public void drawVertices(VertexMode mode, int vertexCount, float[] verts, int vertOffset, 620 float[] texs, int texOffset, int[] colors, int colorOffset, short[] indices, 621 int indexOffset, int indexCount, Paint paint) { 622 // TODO: Implement 623 } 624 625 private boolean setupShader(Paint paint) { 626 final Shader shader = paint.getShader(); 627 if (shader != null) { 628 if (shader instanceof BitmapShader) { 629 final BitmapShader bs = (BitmapShader) shader; 630 nSetupBitmapShader(mRenderer, bs.native_instance, bs.mBitmap.mNativeBitmap, 631 bs.mTileX, bs.mTileY, bs.mLocalMatrix); 632 return true; 633 } else if (shader instanceof LinearGradient) { 634 // TODO: Implement 635 } else if (shader instanceof RadialGradient) { 636 // TODO: Implement 637 } else if (shader instanceof SweepGradient) { 638 // TODO: Implement 639 } 640 } 641 return false; 642 } 643 644 private native void nSetupBitmapShader(int renderer, int shader, int bitmap, 645 int tileX, int tileY, int matrix); 646 private native void nResetShader(int renderer); 647} 648