GLES20Canvas.java revision 6926c72e25b8dec3dd4b84af0819fa1937ae7296
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.DrawFilter; 22import android.graphics.Matrix; 23import android.graphics.Paint; 24import android.graphics.Path; 25import android.graphics.Picture; 26import android.graphics.PorterDuff; 27import android.graphics.Rect; 28import android.graphics.RectF; 29import android.graphics.Region; 30 31import javax.microedition.khronos.opengles.GL; 32 33/** 34 * An implementation of Canvas on top of OpenGL ES 2.0. 35 */ 36@SuppressWarnings({"deprecation"}) 37class GLES20Canvas extends Canvas { 38 @SuppressWarnings({"FieldCanBeLocal", "UnusedDeclaration"}) 39 private final GL mGl; 40 private final boolean mOpaque; 41 private final int mRenderer; 42 43 private int mWidth; 44 private int mHeight; 45 46 private final float[] mPoint = new float[2]; 47 private final float[] mLine = new float[4]; 48 49 private final Rect mClipBounds = new Rect(); 50 51 private DrawFilter mFilter; 52 53 /////////////////////////////////////////////////////////////////////////// 54 // Constructors 55 /////////////////////////////////////////////////////////////////////////// 56 57 GLES20Canvas(GL gl, boolean translucent) { 58 mGl = gl; 59 mOpaque = !translucent; 60 61 mRenderer = nCreateRenderer(); 62 } 63 64 private native int nCreateRenderer(); 65 66 @Override 67 protected void finalize() throws Throwable { 68 try { 69 super.finalize(); 70 } finally { 71 nDestroyRenderer(mRenderer); 72 } 73 } 74 75 private native void nDestroyRenderer(int renderer); 76 77 /////////////////////////////////////////////////////////////////////////// 78 // Canvas management 79 /////////////////////////////////////////////////////////////////////////// 80 81 @Override 82 public boolean isHardwareAccelerated() { 83 return true; 84 } 85 86 @Override 87 public GL getGL() { 88 throw new UnsupportedOperationException(); 89 } 90 91 @Override 92 public void setBitmap(Bitmap bitmap) { 93 throw new UnsupportedOperationException(); 94 } 95 96 @Override 97 public boolean isOpaque() { 98 return mOpaque; 99 } 100 101 @Override 102 public int getWidth() { 103 return mWidth; 104 } 105 106 @Override 107 public int getHeight() { 108 return mHeight; 109 } 110 111 /////////////////////////////////////////////////////////////////////////// 112 // Setup 113 /////////////////////////////////////////////////////////////////////////// 114 115 @Override 116 public void setViewport(int width, int height) { 117 mWidth = width; 118 mHeight = height; 119 120 nSetViewport(mRenderer, width, height); 121 } 122 123 private native void nSetViewport(int renderer, int width, int height); 124 125 void onPreDraw() { 126 nPrepare(mRenderer); 127 } 128 129 private native void nPrepare(int renderer); 130 131 /////////////////////////////////////////////////////////////////////////// 132 // Clipping 133 /////////////////////////////////////////////////////////////////////////// 134 135 @Override 136 public boolean clipPath(Path path) { 137 throw new UnsupportedOperationException(); 138 } 139 140 @Override 141 public boolean clipPath(Path path, Region.Op op) { 142 throw new UnsupportedOperationException(); 143 } 144 145 @Override 146 public boolean clipRect(float left, float top, float right, float bottom) { 147 return nClipRect(mRenderer, left, top, right, bottom); 148 } 149 150 private native boolean nClipRect(int renderer, float left, float top, float right, float bottom); 151 152 @Override 153 public boolean clipRect(float left, float top, float right, float bottom, Region.Op op) { 154 throw new UnsupportedOperationException(); 155 } 156 157 @Override 158 public boolean clipRect(int left, int top, int right, int bottom) { 159 return nClipRect(mRenderer, left, top, right, bottom); 160 } 161 162 private native boolean nClipRect(int renderer, int left, int top, int right, int bottom); 163 164 @Override 165 public boolean clipRect(Rect rect) { 166 return clipRect(rect.left, rect.top, rect.right, rect.bottom); 167 } 168 169 @Override 170 public boolean clipRect(Rect rect, Region.Op op) { 171 // TODO: Implement 172 throw new UnsupportedOperationException(); 173 } 174 175 @Override 176 public boolean clipRect(RectF rect) { 177 return clipRect(rect.left, rect.top, rect.right, rect.bottom); 178 } 179 180 @Override 181 public boolean clipRect(RectF rect, Region.Op op) { 182 // TODO: Implement 183 throw new UnsupportedOperationException(); 184 } 185 186 @Override 187 public boolean clipRegion(Region region) { 188 throw new UnsupportedOperationException(); 189 } 190 191 @Override 192 public boolean clipRegion(Region region, Region.Op op) { 193 throw new UnsupportedOperationException(); 194 } 195 196 @Override 197 public boolean getClipBounds(Rect bounds) { 198 return nGetClipBounds(mRenderer, bounds); 199 } 200 201 private native boolean nGetClipBounds(int renderer, Rect bounds); 202 203 @Override 204 public boolean quickReject(float left, float top, float right, float bottom, EdgeType type) { 205 return nQuickReject(mRenderer, left, top, right, bottom, type.nativeInt); 206 } 207 208 private native boolean nQuickReject(int renderer, float left, float top, 209 float right, float bottom, int edge); 210 211 @Override 212 public boolean quickReject(Path path, EdgeType type) { 213 throw new UnsupportedOperationException(); 214 } 215 216 @Override 217 public boolean quickReject(RectF rect, EdgeType type) { 218 return quickReject(rect.left, rect.top, rect.right, rect.bottom, type); 219 } 220 221 /////////////////////////////////////////////////////////////////////////// 222 // Transformations 223 /////////////////////////////////////////////////////////////////////////// 224 225 @Override 226 public void translate(float dx, float dy) { 227 nTranslate(mRenderer, dx, dy); 228 } 229 230 private native void nTranslate(int renderer, float dx, float dy); 231 232 @Override 233 public void skew(float sx, float sy) { 234 throw new UnsupportedOperationException(); 235 } 236 237 @Override 238 public void rotate(float degrees) { 239 nRotate(mRenderer, degrees); 240 } 241 242 private native void nRotate(int renderer, float degrees); 243 244 @Override 245 public void scale(float sx, float sy) { 246 nScale(mRenderer, sx, sy); 247 } 248 249 private native void nScale(int renderer, float sx, float sy); 250 251 @Override 252 public void setMatrix(Matrix matrix) { 253 nSetMatrix(mRenderer, matrix.native_instance); 254 } 255 256 private native void nSetMatrix(int renderer, int matrix); 257 258 @Override 259 public void getMatrix(Matrix matrix) { 260 nGetMatrix(mRenderer, matrix.native_instance); 261 } 262 263 private native void nGetMatrix(int renderer, int matrix); 264 265 @Override 266 public void concat(Matrix matrix) { 267 nConcatMatrix(mRenderer, matrix.native_instance); 268 } 269 270 private native void nConcatMatrix(int renderer, int matrix); 271 272 /////////////////////////////////////////////////////////////////////////// 273 // State management 274 /////////////////////////////////////////////////////////////////////////// 275 276 @Override 277 public int save() { 278 return nSave(mRenderer, 0); 279 } 280 281 @Override 282 public int save(int saveFlags) { 283 return nSave(mRenderer, saveFlags); 284 } 285 286 private native int nSave(int renderer, int flags); 287 288 @Override 289 public int saveLayer(RectF bounds, Paint paint, int saveFlags) { 290 return saveLayer(bounds.left, bounds.top, bounds.right, bounds.bottom, paint, saveFlags); 291 } 292 293 @Override 294 public int saveLayer(float left, float top, float right, float bottom, Paint paint, 295 int saveFlags) { 296 int nativePaint = paint == null ? 0 : paint.mNativePaint; 297 return nSaveLayer(mRenderer, left, top, right, bottom, nativePaint, saveFlags); 298 } 299 300 private native int nSaveLayer(int renderer, float left, float top, float right, float bottom, 301 int paint, int saveFlags); 302 303 @Override 304 public int saveLayerAlpha(RectF bounds, int alpha, int saveFlags) { 305 return saveLayerAlpha(bounds.left, bounds.top, bounds.right, bounds.bottom, 306 alpha, saveFlags); 307 } 308 309 @Override 310 public int saveLayerAlpha(float left, float top, float right, float bottom, int alpha, 311 int saveFlags) { 312 return nSaveLayerAlpha(mRenderer, left, top, right, bottom, alpha, saveFlags); 313 } 314 315 private native int nSaveLayerAlpha(int renderer, float left, float top, float right, 316 float bottom, int alpha, int saveFlags); 317 318 @Override 319 public void restore() { 320 nRestore(mRenderer); 321 } 322 323 private native void nRestore(int renderer); 324 325 @Override 326 public void restoreToCount(int saveCount) { 327 nRestoreToCount(mRenderer, saveCount); 328 } 329 330 private native void nRestoreToCount(int renderer, int saveCount); 331 332 @Override 333 public int getSaveCount() { 334 return nGetSaveCount(mRenderer); 335 } 336 337 private native int nGetSaveCount(int renderer); 338 339 /////////////////////////////////////////////////////////////////////////// 340 // Filtering 341 /////////////////////////////////////////////////////////////////////////// 342 343 @Override 344 public void setDrawFilter(DrawFilter filter) { 345 // Don't crash, but ignore the draw filter 346 // TODO: Implement PaintDrawFilter 347 mFilter = filter; 348 } 349 350 @Override 351 public DrawFilter getDrawFilter() { 352 return mFilter; 353 } 354 355 /////////////////////////////////////////////////////////////////////////// 356 // Drawing 357 /////////////////////////////////////////////////////////////////////////// 358 359 @Override 360 public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, 361 Paint paint) { 362 throw new UnsupportedOperationException(); 363 } 364 365 @Override 366 public void drawARGB(int a, int r, int g, int b) { 367 drawColor((a & 0xFF) << 24 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 368 } 369 370 @Override 371 public void drawPatch(Bitmap bitmap, byte[] chunks, RectF dst, Paint paint) { 372 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 373 nDrawPatch(mRenderer, bitmap.mNativeBitmap, chunks, dst.left, dst.top, 374 dst.right, dst.bottom, nativePaint); 375 } 376 377 private native void nDrawPatch(int renderer, int bitmap, byte[] chunks, float left, float top, 378 float right, float bottom, int paint); 379 380 @Override 381 public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) { 382 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 383 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, left, top, nativePaint); 384 } 385 386 private native void nDrawBitmap(int renderer, int bitmap, float left, float top, int paint); 387 388 @Override 389 public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) { 390 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 391 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, matrix.native_instance, nativePaint); 392 } 393 394 private native void nDrawBitmap(int renderer, int bitmap, int matrix, int paint); 395 396 @Override 397 public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) { 398 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 399 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, src.left, src.top, src.right, src.bottom, 400 dst.left, dst.top, dst.right, dst.bottom, nativePaint 401 ); 402 } 403 404 @Override 405 public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) { 406 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 407 nDrawBitmap(mRenderer, bitmap.mNativeBitmap, src.left, src.top, src.right, src.bottom, 408 dst.left, dst.top, dst.right, dst.bottom, nativePaint 409 ); 410 } 411 412 private native void nDrawBitmap(int renderer, int bitmap, 413 float srcLeft, float srcTop, float srcRight, float srcBottom, 414 float left, float top, float right, float bottom, int paint); 415 416 @Override 417 public void drawBitmap(int[] colors, int offset, int stride, float x, float y, 418 int width, int height, boolean hasAlpha, Paint paint) { 419 final Bitmap.Config config = hasAlpha ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565; 420 final Bitmap b = Bitmap.createBitmap(colors, offset, stride, width, height, config); 421 final int nativePaint = paint == null ? 0 : paint.mNativePaint; 422 nDrawBitmap(mRenderer, b.mNativeBitmap, x, y, nativePaint); 423 b.recycle(); 424 } 425 426 @Override 427 public void drawBitmap(int[] colors, int offset, int stride, int x, int y, 428 int width, int height, boolean hasAlpha, Paint paint) { 429 drawBitmap(colors, offset, stride, (float) x, (float) y, width, height, hasAlpha, paint); 430 } 431 432 @Override 433 public void drawBitmapMesh(Bitmap bitmap, int meshWidth, int meshHeight, float[] verts, 434 int vertOffset, int[] colors, int colorOffset, Paint paint) { 435 // TODO: Implement 436 } 437 438 @Override 439 public void drawCircle(float cx, float cy, float radius, Paint paint) { 440 throw new UnsupportedOperationException(); 441 } 442 443 @Override 444 public void drawColor(int color) { 445 drawColor(color, PorterDuff.Mode.SRC_OVER); 446 } 447 448 @Override 449 public void drawColor(int color, PorterDuff.Mode mode) { 450 nDrawColor(mRenderer, color, mode.nativeInt); 451 } 452 453 private native void nDrawColor(int renderer, int color, int mode); 454 455 @Override 456 public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) { 457 mLine[0] = startX; 458 mLine[1] = startY; 459 mLine[2] = stopX; 460 mLine[3] = stopY; 461 drawLines(mLine, 0, 1, paint); 462 } 463 464 @Override 465 public void drawLines(float[] pts, int offset, int count, Paint paint) { 466 // TODO: Implement 467 } 468 469 @Override 470 public void drawLines(float[] pts, Paint paint) { 471 drawLines(pts, 0, pts.length / 4, paint); 472 } 473 474 @Override 475 public void drawOval(RectF oval, Paint paint) { 476 throw new UnsupportedOperationException(); 477 } 478 479 @Override 480 public void drawPaint(Paint paint) { 481 final Rect r = mClipBounds; 482 nGetClipBounds(mRenderer, r); 483 drawRect(r.left, r.top, r.right, r.bottom, paint); 484 } 485 486 @Override 487 public void drawPath(Path path, Paint paint) { 488 throw new UnsupportedOperationException(); 489 } 490 491 @Override 492 public void drawPicture(Picture picture) { 493 throw new UnsupportedOperationException(); 494 } 495 496 @Override 497 public void drawPicture(Picture picture, Rect dst) { 498 throw new UnsupportedOperationException(); 499 } 500 501 @Override 502 public void drawPicture(Picture picture, RectF dst) { 503 throw new UnsupportedOperationException(); 504 } 505 506 @Override 507 public void drawPoint(float x, float y, Paint paint) { 508 mPoint[0] = x; 509 mPoint[1] = y; 510 drawPoints(mPoint, 0, 1, paint); 511 } 512 513 @Override 514 public void drawPoints(float[] pts, int offset, int count, Paint paint) { 515 // TODO: Implement 516 } 517 518 @Override 519 public void drawPoints(float[] pts, Paint paint) { 520 drawPoints(pts, 0, pts.length / 2, paint); 521 } 522 523 @Override 524 public void drawPosText(char[] text, int index, int count, float[] pos, Paint paint) { 525 throw new UnsupportedOperationException(); 526 } 527 528 @Override 529 public void drawPosText(String text, float[] pos, Paint paint) { 530 throw new UnsupportedOperationException(); 531 } 532 533 @Override 534 public void drawRect(float left, float top, float right, float bottom, Paint paint) { 535 nDrawRect(mRenderer, left, top, right, bottom, paint.mNativePaint); 536 } 537 538 private native void nDrawRect(int renderer, float left, float top, float right, float bottom, 539 int paint); 540 541 @Override 542 public void drawRect(Rect r, Paint paint) { 543 drawRect(r.left, r.top, r.right, r.bottom, paint); 544 } 545 546 @Override 547 public void drawRect(RectF r, Paint paint) { 548 drawRect(r.left, r.top, r.right, r.bottom, paint); 549 } 550 551 @Override 552 public void drawRGB(int r, int g, int b) { 553 drawColor(0xFF000000 | (r & 0xFF) << 16 | (g & 0xFF) << 8 | (b & 0xFF)); 554 } 555 556 @Override 557 public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) { 558 throw new UnsupportedOperationException(); 559 } 560 561 @Override 562 public void drawText(char[] text, int index, int count, float x, float y, Paint paint) { 563 // TODO: Implement 564 } 565 566 @Override 567 public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) { 568 // TODO: Implement 569 } 570 571 @Override 572 public void drawText(String text, int start, int end, float x, float y, Paint paint) { 573 // TODO: Implement 574 } 575 576 @Override 577 public void drawText(String text, float x, float y, Paint paint) { 578 drawText(text, 0, text.length(), x, y, paint); 579 } 580 581 @Override 582 public void drawTextOnPath(char[] text, int index, int count, Path path, float hOffset, 583 float vOffset, Paint paint) { 584 throw new UnsupportedOperationException(); 585 } 586 587 @Override 588 public void drawTextOnPath(String text, Path path, float hOffset, float vOffset, Paint paint) { 589 throw new UnsupportedOperationException(); 590 } 591 592 @Override 593 public void drawTextRun(char[] text, int index, int count, int contextIndex, int contextCount, 594 float x, float y, int dir, Paint paint) { 595 throw new UnsupportedOperationException(); 596 } 597 598 @Override 599 public void drawTextRun(CharSequence text, int start, int end, int contextStart, int contextEnd, 600 float x, float y, int dir, Paint paint) { 601 throw new UnsupportedOperationException(); 602 } 603 604 @Override 605 public void drawVertices(VertexMode mode, int vertexCount, float[] verts, int vertOffset, 606 float[] texs, int texOffset, int[] colors, int colorOffset, short[] indices, 607 int indexOffset, int indexCount, Paint paint) { 608 // TODO: Implement 609 } 610} 611