reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame^] | 1 | #include "SkCanvas.h" |
| 2 | #include "SkDevice.h" |
| 3 | #include "SkGLCanvas.h" |
| 4 | #include "SkGraphics.h" |
| 5 | #include "SkPaint.h" |
| 6 | #include "SkPicture.h" |
| 7 | #include "SkStream.h" |
| 8 | #include "SkWindow.h" |
| 9 | |
| 10 | #include "SampleCode.h" |
| 11 | |
| 12 | #include <AGL/agl.h> |
| 13 | #include <OpenGL/gl.h> |
| 14 | |
| 15 | #define ANIMATING_EVENTTYPE "nextSample" |
| 16 | #define ANIMATING_DELAY 750 |
| 17 | |
| 18 | #define USE_OFFSCREEN |
| 19 | |
| 20 | SkViewRegister* SkViewRegister::gHead; |
| 21 | SkViewRegister::SkViewRegister(SkViewFactory fact) : fFact(fact) { |
| 22 | static bool gOnce; |
| 23 | if (!gOnce) { |
| 24 | gHead = NULL; |
| 25 | gOnce = true; |
| 26 | } |
| 27 | |
| 28 | fChain = gHead; |
| 29 | gHead = this; |
| 30 | } |
| 31 | |
| 32 | static AGLContext gAGLContext; |
| 33 | |
| 34 | static void init_gl(WindowRef wref) { |
| 35 | GLint major, minor; |
| 36 | |
| 37 | aglGetVersion(&major, &minor); |
| 38 | SkDebugf("---- agl version %d %d\n", major, minor); |
| 39 | |
| 40 | const GLint pixelAttrs[] = { |
| 41 | AGL_RGBA, |
| 42 | AGL_DEPTH_SIZE, 32, |
| 43 | AGL_OFFSCREEN, |
| 44 | AGL_NONE |
| 45 | }; |
| 46 | |
| 47 | AGLPixelFormat format = aglCreatePixelFormat(pixelAttrs); |
| 48 | SkDebugf("----- agl format %p\n", format); |
| 49 | gAGLContext = aglCreateContext(format, NULL); |
| 50 | SkDebugf("----- agl context %p\n", gAGLContext); |
| 51 | aglDestroyPixelFormat(format); |
| 52 | |
| 53 | aglEnable(gAGLContext, GL_BLEND); |
| 54 | aglEnable(gAGLContext, GL_LINE_SMOOTH); |
| 55 | aglEnable(gAGLContext, GL_POINT_SMOOTH); |
| 56 | aglEnable(gAGLContext, GL_POLYGON_SMOOTH); |
| 57 | |
| 58 | aglSetCurrentContext(gAGLContext); |
| 59 | } |
| 60 | |
| 61 | static void setup_offscreen_gl(const SkBitmap& offscreen, WindowRef wref) { |
| 62 | GLboolean success = true; |
| 63 | |
| 64 | #ifdef USE_OFFSCREEN |
| 65 | success = aglSetOffScreen(gAGLContext, |
| 66 | offscreen.width(), |
| 67 | offscreen.height(), |
| 68 | offscreen.rowBytes(), |
| 69 | offscreen.getPixels()); |
| 70 | #else |
| 71 | success = aglSetWindowRef(gAGLContext, wref); |
| 72 | #endif |
| 73 | |
| 74 | GLenum err = aglGetError(); |
| 75 | if (err) { |
| 76 | SkDebugf("---- setoffscreen %d %d %s [%d %d]\n", success, err, |
| 77 | aglErrorString(err), offscreen.width(), offscreen.height()); |
| 78 | } |
| 79 | |
| 80 | glEnable(GL_BLEND); |
| 81 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
| 82 | glHint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE); |
| 83 | glEnable(GL_TEXTURE_2D); |
| 84 | |
| 85 | glClearColor(0, 0, 0, 0); |
| 86 | glClear(GL_COLOR_BUFFER_BIT); |
| 87 | } |
| 88 | |
| 89 | ////////////////////////////////////////////////////////////////////////////// |
| 90 | |
| 91 | static const char gTitleEvtName[] = "SampleCode_Title_Event"; |
| 92 | static const char gPrefSizeEvtName[] = "SampleCode_PrefSize_Event"; |
| 93 | |
| 94 | bool SampleCode::TitleQ(const SkEvent& evt) { |
| 95 | return evt.isType(gTitleEvtName, sizeof(gTitleEvtName) - 1); |
| 96 | } |
| 97 | |
| 98 | void SampleCode::TitleR(SkEvent* evt, const char title[]) { |
| 99 | SkASSERT(evt && TitleQ(*evt)); |
| 100 | evt->setString(gTitleEvtName, title); |
| 101 | } |
| 102 | |
| 103 | bool SampleCode::PrefSizeQ(const SkEvent& evt) { |
| 104 | return evt.isType(gPrefSizeEvtName, sizeof(gPrefSizeEvtName) - 1); |
| 105 | } |
| 106 | |
| 107 | void SampleCode::PrefSizeR(SkEvent* evt, SkScalar width, SkScalar height) { |
| 108 | SkASSERT(evt && PrefSizeQ(*evt)); |
| 109 | SkScalar size[2]; |
| 110 | size[0] = width; |
| 111 | size[1] = height; |
| 112 | evt->setScalars(gPrefSizeEvtName, 2, size); |
| 113 | } |
| 114 | |
| 115 | ////////////////////////////////////////////////////////////////////////////// |
| 116 | |
| 117 | class SampleWindow : public SkOSWindow { |
| 118 | public: |
| 119 | SampleWindow(void* hwnd); |
| 120 | virtual ~SampleWindow(); |
| 121 | |
| 122 | protected: |
| 123 | virtual void onDraw(SkCanvas* canvas); |
| 124 | virtual bool onHandleKey(SkKey key); |
| 125 | virtual bool onHandleChar(SkUnichar); |
| 126 | virtual void onSizeChange(); |
| 127 | |
| 128 | virtual SkCanvas* beforeChildren(SkCanvas*); |
| 129 | virtual void afterChildren(SkCanvas*); |
| 130 | |
| 131 | virtual bool onEvent(const SkEvent& evt); |
| 132 | |
| 133 | #if 0 |
| 134 | virtual bool handleChar(SkUnichar uni); |
| 135 | virtual bool handleEvent(const SkEvent& evt); |
| 136 | virtual bool handleKey(SkKey key); |
| 137 | virtual bool handleKeyUp(SkKey key); |
| 138 | |
| 139 | virtual bool onClick(Click* click); |
| 140 | virtual Click* onFindClickHandler(SkScalar x, SkScalar y); |
| 141 | virtual bool onHandleKeyUp(SkKey key); |
| 142 | #endif |
| 143 | private: |
| 144 | const SkViewRegister* fCurr; |
| 145 | |
| 146 | SkPicture* fPicture; |
| 147 | SkGLCanvas* fGLCanvas; |
| 148 | SkPath fClipPath; |
| 149 | |
| 150 | enum CanvasType { |
| 151 | kRaster_CanvasType, |
| 152 | kPicture_CanvasType, |
| 153 | kOpenGL_CanvasType |
| 154 | }; |
| 155 | CanvasType fCanvasType; |
| 156 | |
| 157 | bool fUseClip; |
| 158 | bool fRepeatDrawing; |
| 159 | bool fAnimating; |
| 160 | |
| 161 | int fScrollTestX, fScrollTestY; |
| 162 | |
| 163 | void loadView(SkView*); |
| 164 | void updateTitle(); |
| 165 | bool nextSample(); |
| 166 | |
| 167 | void postAnimatingEvent() { |
| 168 | if (fAnimating) { |
| 169 | SkEvent* evt = new SkEvent(ANIMATING_EVENTTYPE); |
| 170 | evt->post(this->getSinkID(), ANIMATING_DELAY); |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | |
| 175 | static CanvasType cycle_canvastype(CanvasType); |
| 176 | |
| 177 | typedef SkOSWindow INHERITED; |
| 178 | }; |
| 179 | |
| 180 | SampleWindow::CanvasType SampleWindow::cycle_canvastype(CanvasType ct) { |
| 181 | static const CanvasType gCT[] = { |
| 182 | kPicture_CanvasType, |
| 183 | kOpenGL_CanvasType, |
| 184 | kRaster_CanvasType |
| 185 | }; |
| 186 | return gCT[ct]; |
| 187 | } |
| 188 | |
| 189 | SampleWindow::SampleWindow(void* hwnd) : INHERITED(hwnd) { |
| 190 | init_gl((WindowRef)hwnd); |
| 191 | |
| 192 | fPicture = NULL; |
| 193 | fGLCanvas = NULL; |
| 194 | |
| 195 | fCanvasType = kRaster_CanvasType; |
| 196 | fUseClip = false; |
| 197 | fRepeatDrawing = false; |
| 198 | fAnimating = false; |
| 199 | |
| 200 | fScrollTestX = fScrollTestY = 0; |
| 201 | |
| 202 | // this->setConfig(SkBitmap::kRGB_565_Config); |
| 203 | this->setConfig(SkBitmap::kARGB_8888_Config); |
| 204 | this->setVisibleP(true); |
| 205 | |
| 206 | fCurr = SkViewRegister::Head(); |
| 207 | this->loadView(fCurr->factory()()); |
| 208 | } |
| 209 | |
| 210 | SampleWindow::~SampleWindow() { |
| 211 | delete fPicture; |
| 212 | delete fGLCanvas; |
| 213 | } |
| 214 | |
| 215 | void SampleWindow::onDraw(SkCanvas* canvas) { |
| 216 | if (fRepeatDrawing) { |
| 217 | this->inval(NULL); |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | #include "SkColorPriv.h" |
| 222 | |
| 223 | static void reverseRedAndBlue(const SkBitmap& bm) { |
| 224 | SkASSERT(bm.config() == SkBitmap::kARGB_8888_Config); |
| 225 | uint8_t* p = (uint8_t*)bm.getPixels(); |
| 226 | uint8_t* stop = p + bm.getSize(); |
| 227 | while (p < stop) { |
| 228 | // swap red/blue (to go from ARGB(int) to RGBA(memory) and premultiply |
| 229 | unsigned scale = SkAlpha255To256(p[3]); |
| 230 | unsigned r = p[2]; |
| 231 | unsigned b = p[0]; |
| 232 | p[0] = SkAlphaMul(r, scale); |
| 233 | p[1] = SkAlphaMul(p[1], scale); |
| 234 | p[2] = SkAlphaMul(b, scale); |
| 235 | p += 4; |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | SkCanvas* SampleWindow::beforeChildren(SkCanvas* canvas) { |
| 240 | #ifndef USE_OFFSCREEN |
| 241 | aglSetWindowRef(gAGLContext, NULL); |
| 242 | #endif |
| 243 | switch (fCanvasType) { |
| 244 | case kRaster_CanvasType: |
| 245 | canvas = this->INHERITED::beforeChildren(canvas); |
| 246 | break; |
| 247 | case kPicture_CanvasType: |
| 248 | fPicture = new SkPicture; |
| 249 | canvas = fPicture->beginRecording(9999, 9999); |
| 250 | break; |
| 251 | case kOpenGL_CanvasType: { |
| 252 | //SkGLCanvas::DeleteAllTextures(); // just for testing |
| 253 | SkDevice* device = canvas->getDevice(); |
| 254 | const SkBitmap& bitmap = device->accessBitmap(true); |
| 255 | // first clear the raster bitmap, so we don't see any leftover bits |
| 256 | bitmap.eraseColor(0); |
| 257 | // now setup our glcanvas |
| 258 | setup_offscreen_gl(bitmap, (WindowRef)this->getHWND()); |
| 259 | fGLCanvas = new SkGLCanvas; |
| 260 | fGLCanvas->setViewport(bitmap.width(), bitmap.height()); |
| 261 | canvas = fGLCanvas; |
| 262 | break; |
| 263 | } |
| 264 | } |
| 265 | |
| 266 | if (fUseClip) { |
| 267 | canvas->drawColor(0xFFFF88FF); |
| 268 | canvas->clipPath(fClipPath); |
| 269 | } |
| 270 | |
| 271 | return canvas; |
| 272 | } |
| 273 | |
| 274 | static void paint_rgn(const SkBitmap& bm, const SkIRect& r, |
| 275 | const SkRegion& rgn) { |
| 276 | SkCanvas canvas(bm); |
| 277 | SkRegion inval(rgn); |
| 278 | |
| 279 | inval.translate(r.fLeft, r.fTop); |
| 280 | canvas.clipRegion(inval); |
| 281 | canvas.drawColor(0xFFFF8080); |
| 282 | } |
| 283 | |
| 284 | void SampleWindow::afterChildren(SkCanvas* orig) { |
| 285 | switch (fCanvasType) { |
| 286 | case kRaster_CanvasType: |
| 287 | break; |
| 288 | case kPicture_CanvasType: |
| 289 | if (false) { |
| 290 | SkPicture* pict = new SkPicture(*fPicture); |
| 291 | fPicture->unref(); |
| 292 | orig->drawPicture(*pict); |
| 293 | pict->unref(); |
| 294 | } if (true) { |
| 295 | SkDynamicMemoryWStream ostream; |
| 296 | fPicture->serialize(&ostream); |
| 297 | fPicture->unref(); |
| 298 | |
| 299 | SkMemoryStream istream(ostream.getStream(), ostream.getOffset()); |
| 300 | SkPicture pict(&istream); |
| 301 | orig->drawPicture(pict); |
| 302 | } else { |
| 303 | fPicture->draw(orig); |
| 304 | fPicture->unref(); |
| 305 | } |
| 306 | fPicture = NULL; |
| 307 | break; |
| 308 | case kOpenGL_CanvasType: |
| 309 | glFlush(); |
| 310 | delete fGLCanvas; |
| 311 | fGLCanvas = NULL; |
| 312 | #ifdef USE_OFFSCREEN |
| 313 | reverseRedAndBlue(orig->getDevice()->accessBitmap(true)); |
| 314 | #endif |
| 315 | break; |
| 316 | } |
| 317 | |
| 318 | // if ((fScrollTestX | fScrollTestY) != 0) |
| 319 | { |
| 320 | const SkBitmap& bm = orig->getDevice()->accessBitmap(true); |
| 321 | int dx = fScrollTestX * 7; |
| 322 | int dy = fScrollTestY * 7; |
| 323 | SkIRect r; |
| 324 | SkRegion inval; |
| 325 | |
| 326 | r.set(50, 50, 50+100, 50+100); |
| 327 | bm.scrollRect(&r, dx, dy, &inval); |
| 328 | paint_rgn(bm, r, inval); |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | static SkBitmap::Config gConfigCycle[] = { |
| 333 | SkBitmap::kNo_Config, // none -> none |
| 334 | SkBitmap::kNo_Config, // a1 -> none |
| 335 | SkBitmap::kNo_Config, // a8 -> none |
| 336 | SkBitmap::kNo_Config, // index8 -> none |
| 337 | SkBitmap::kARGB_4444_Config, // 565 -> 4444 |
| 338 | SkBitmap::kARGB_8888_Config, // 4444 -> 8888 |
| 339 | SkBitmap::kRGB_565_Config // 8888 -> 565 |
| 340 | }; |
| 341 | |
| 342 | static SkBitmap::Config cycle_configs(SkBitmap::Config c) { |
| 343 | return gConfigCycle[c]; |
| 344 | } |
| 345 | |
| 346 | bool SampleWindow::nextSample() { |
| 347 | if (fCurr) { |
| 348 | fCurr = fCurr->next(); |
| 349 | if (NULL == fCurr) { |
| 350 | fCurr = SkViewRegister::Head(); |
| 351 | } |
| 352 | this->loadView(fCurr->factory()()); |
| 353 | return true; |
| 354 | } |
| 355 | return false; |
| 356 | } |
| 357 | |
| 358 | bool SampleWindow::onEvent(const SkEvent& evt) { |
| 359 | if (evt.isType(ANIMATING_EVENTTYPE)) { |
| 360 | if (fAnimating) { |
| 361 | this->nextSample(); |
| 362 | this->postAnimatingEvent(); |
| 363 | } |
| 364 | return true; |
| 365 | } |
| 366 | return this->INHERITED::onEvent(evt); |
| 367 | } |
| 368 | |
| 369 | |
| 370 | bool SampleWindow::onHandleChar(SkUnichar uni) { |
| 371 | int dx = 0xFF; |
| 372 | int dy = 0xFF; |
| 373 | |
| 374 | switch (uni) { |
| 375 | case '5': dx = 0; dy = 0; break; |
| 376 | case '8': dx = 0; dy = -1; break; |
| 377 | case '6': dx = 1; dy = 0; break; |
| 378 | case '2': dx = 0; dy = 1; break; |
| 379 | case '4': dx = -1; dy = 0; break; |
| 380 | case '7': dx = -1; dy = -1; break; |
| 381 | case '9': dx = 1; dy = -1; break; |
| 382 | case '3': dx = 1; dy = 1; break; |
| 383 | case '1': dx = -1; dy = 1; break; |
| 384 | |
| 385 | default: |
| 386 | break; |
| 387 | } |
| 388 | |
| 389 | if (0xFF != dx && 0xFF != dy) { |
| 390 | if ((dx | dy) == 0) { |
| 391 | fScrollTestX = fScrollTestY = 0; |
| 392 | } else { |
| 393 | fScrollTestX += dx; |
| 394 | fScrollTestY += dy; |
| 395 | } |
| 396 | this->inval(NULL); |
| 397 | return true; |
| 398 | } |
| 399 | |
| 400 | if ('a' == uni) { |
| 401 | fAnimating = !fAnimating; |
| 402 | this->postAnimatingEvent(); |
| 403 | this->updateTitle(); |
| 404 | } |
| 405 | |
| 406 | return this->INHERITED::onHandleChar(uni); |
| 407 | } |
| 408 | |
| 409 | #include "SkDumpCanvas.h" |
| 410 | |
| 411 | bool SampleWindow::onHandleKey(SkKey key) { |
| 412 | switch (key) { |
| 413 | case kRight_SkKey: |
| 414 | if (this->nextSample()) { |
| 415 | return true; |
| 416 | } |
| 417 | break; |
| 418 | case kLeft_SkKey: |
| 419 | fCanvasType = cycle_canvastype(fCanvasType); |
| 420 | this->updateTitle(); |
| 421 | this->inval(NULL); |
| 422 | return true; |
| 423 | case kUp_SkKey: |
| 424 | fUseClip = !fUseClip; |
| 425 | this->updateTitle(); |
| 426 | this->inval(NULL); |
| 427 | return true; |
| 428 | case kDown_SkKey: |
| 429 | this->setConfig(cycle_configs(this->getBitmap().config())); |
| 430 | this->updateTitle(); |
| 431 | return true; |
| 432 | case kOK_SkKey: |
| 433 | if (true) { |
| 434 | SkDebugfDumper dumper; |
| 435 | SkDumpCanvas dc(&dumper); |
| 436 | this->draw(&dc); |
| 437 | } else { |
| 438 | fRepeatDrawing = !fRepeatDrawing; |
| 439 | if (fRepeatDrawing) { |
| 440 | this->inval(NULL); |
| 441 | } |
| 442 | } |
| 443 | return true; |
| 444 | default: |
| 445 | break; |
| 446 | } |
| 447 | return this->INHERITED::onHandleKey(key); |
| 448 | } |
| 449 | |
| 450 | void SampleWindow::loadView(SkView* view) { |
| 451 | SkView::F2BIter iter(this); |
| 452 | SkView* prev = iter.next(); |
| 453 | if (prev) { |
| 454 | prev->detachFromParent(); |
| 455 | } |
| 456 | view->setVisibleP(true); |
| 457 | this->attachChildToFront(view)->unref(); |
| 458 | view->setSize(this->width(), this->height()); |
| 459 | |
| 460 | this->updateTitle(); |
| 461 | } |
| 462 | |
| 463 | static const char* gConfigNames[] = { |
| 464 | "unknown config", |
| 465 | "A1", |
| 466 | "A8", |
| 467 | "Index8", |
| 468 | "565", |
| 469 | "4444", |
| 470 | "8888" |
| 471 | }; |
| 472 | |
| 473 | static const char* configToString(SkBitmap::Config c) { |
| 474 | return gConfigNames[c]; |
| 475 | } |
| 476 | |
| 477 | static const char* gCanvasTypePrefix[] = { |
| 478 | "raster: ", |
| 479 | "picture: ", |
| 480 | "opengl: " |
| 481 | }; |
| 482 | |
| 483 | void SampleWindow::updateTitle() { |
| 484 | SkString title; |
| 485 | |
| 486 | SkView::F2BIter iter(this); |
| 487 | SkView* view = iter.next(); |
| 488 | SkEvent evt(gTitleEvtName); |
| 489 | if (view->doQuery(&evt)) { |
| 490 | title.set(evt.findString(gTitleEvtName)); |
| 491 | } |
| 492 | if (title.size() == 0) { |
| 493 | title.set("<unknown>"); |
| 494 | } |
| 495 | |
| 496 | title.prepend(gCanvasTypePrefix[fCanvasType]); |
| 497 | |
| 498 | title.prepend(" "); |
| 499 | title.prepend(configToString(this->getBitmap().config())); |
| 500 | |
| 501 | if (fAnimating) { |
| 502 | title.prepend("<A> "); |
| 503 | } |
| 504 | |
| 505 | this->setTitle(title.c_str()); |
| 506 | } |
| 507 | |
| 508 | void SampleWindow::onSizeChange() { |
| 509 | this->INHERITED::onSizeChange(); |
| 510 | |
| 511 | SkView::F2BIter iter(this); |
| 512 | SkView* view = iter.next(); |
| 513 | view->setSize(this->width(), this->height()); |
| 514 | |
| 515 | // rebuild our clippath |
| 516 | { |
| 517 | const SkScalar W = this->width(); |
| 518 | const SkScalar H = this->height(); |
| 519 | |
| 520 | fClipPath.reset(); |
| 521 | #if 0 |
| 522 | for (SkScalar y = SK_Scalar1; y < H; y += SkIntToScalar(32)) { |
| 523 | SkRect r; |
| 524 | r.set(SK_Scalar1, y, SkIntToScalar(30), y + SkIntToScalar(30)); |
| 525 | for (; r.fLeft < W; r.offset(SkIntToScalar(32), 0)) |
| 526 | fClipPath.addRect(r); |
| 527 | } |
| 528 | #else |
| 529 | SkRect r; |
| 530 | r.set(0, 0, W, H); |
| 531 | fClipPath.addRect(r, SkPath::kCCW_Direction); |
| 532 | r.set(W/4, H/4, W*3/4, H*3/4); |
| 533 | fClipPath.addRect(r, SkPath::kCW_Direction); |
| 534 | #endif |
| 535 | } |
| 536 | |
| 537 | this->updateTitle(); // to refresh our config |
| 538 | } |
| 539 | |
| 540 | /////////////////////////////////////////////////////////////////////////////// |
| 541 | |
| 542 | SkOSWindow* create_sk_window(void* hwnd) { |
| 543 | return new SampleWindow(hwnd); |
| 544 | } |
| 545 | |
| 546 | void get_preferred_size(int* x, int* y, int* width, int* height) { |
| 547 | *x = 10; |
| 548 | *y = 50; |
| 549 | *width = 640; |
| 550 | *height = 480; |
| 551 | } |
| 552 | |
| 553 | void application_init() { |
| 554 | // setenv("ANDROID_ROOT", "../../../data", 0); |
| 555 | setenv("ANDROID_ROOT", "/android/device/data", 0); |
| 556 | SkGraphics::Init(true); |
| 557 | SkEvent::Init(); |
| 558 | } |
| 559 | |
| 560 | void application_term() { |
| 561 | SkEvent::Term(); |
| 562 | SkGraphics::Term(); |
| 563 | } |