reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2006-2008 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 | |
| 17 | #include "SkCanvas.h" |
| 18 | #include "SkBounder.h" |
| 19 | #include "SkDevice.h" |
| 20 | #include "SkDraw.h" |
| 21 | #include "SkDrawFilter.h" |
| 22 | #include "SkDrawLooper.h" |
| 23 | #include "SkPicture.h" |
| 24 | #include "SkScalarCompare.h" |
reed@android.com | f76bacf | 2009-05-13 14:00:33 +0000 | [diff] [blame] | 25 | #include "SkShape.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 26 | #include "SkTemplates.h" |
| 27 | #include "SkUtils.h" |
| 28 | #include <new> |
| 29 | |
| 30 | //#define SK_TRACE_SAVERESTORE |
| 31 | |
| 32 | #ifdef SK_TRACE_SAVERESTORE |
| 33 | static int gLayerCounter; |
| 34 | static void inc_layer() { ++gLayerCounter; printf("----- inc layer %d\n", gLayerCounter); } |
| 35 | static void dec_layer() { --gLayerCounter; printf("----- dec layer %d\n", gLayerCounter); } |
| 36 | |
| 37 | static int gRecCounter; |
| 38 | static void inc_rec() { ++gRecCounter; printf("----- inc rec %d\n", gRecCounter); } |
| 39 | static void dec_rec() { --gRecCounter; printf("----- dec rec %d\n", gRecCounter); } |
| 40 | |
| 41 | static int gCanvasCounter; |
| 42 | static void inc_canvas() { ++gCanvasCounter; printf("----- inc canvas %d\n", gCanvasCounter); } |
| 43 | static void dec_canvas() { --gCanvasCounter; printf("----- dec canvas %d\n", gCanvasCounter); } |
| 44 | #else |
| 45 | #define inc_layer() |
| 46 | #define dec_layer() |
| 47 | #define inc_rec() |
| 48 | #define dec_rec() |
| 49 | #define inc_canvas() |
| 50 | #define dec_canvas() |
| 51 | #endif |
| 52 | |
| 53 | /////////////////////////////////////////////////////////////////////////////// |
| 54 | // Helpers for computing fast bounds for quickReject tests |
| 55 | |
| 56 | static SkCanvas::EdgeType paint2EdgeType(const SkPaint* paint) { |
| 57 | return paint != NULL && paint->isAntiAlias() ? |
| 58 | SkCanvas::kAA_EdgeType : SkCanvas::kBW_EdgeType; |
| 59 | } |
| 60 | |
| 61 | /////////////////////////////////////////////////////////////////////////////// |
| 62 | |
| 63 | /* This is the record we keep for each SkDevice that the user installs. |
| 64 | The clip/matrix/proc are fields that reflect the top of the save/restore |
| 65 | stack. Whenever the canvas changes, it marks a dirty flag, and then before |
| 66 | these are used (assuming we're not on a layer) we rebuild these cache |
| 67 | values: they reflect the top of the save stack, but translated and clipped |
| 68 | by the device's XY offset and bitmap-bounds. |
| 69 | */ |
| 70 | struct DeviceCM { |
| 71 | DeviceCM* fNext; |
| 72 | SkDevice* fDevice; |
| 73 | SkRegion fClip; |
| 74 | const SkMatrix* fMatrix; |
reed@google.com | 6f8f292 | 2011-03-04 22:27:10 +0000 | [diff] [blame^] | 75 | SkPaint* fPaint; // may be null (in the future) |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 76 | // optional, related to canvas' external matrix |
| 77 | const SkMatrix* fMVMatrix; |
| 78 | const SkMatrix* fExtMatrix; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 79 | |
| 80 | DeviceCM(SkDevice* device, int x, int y, const SkPaint* paint) |
| 81 | : fNext(NULL) { |
| 82 | if (NULL != device) { |
| 83 | device->ref(); |
| 84 | device->lockPixels(); |
| 85 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 86 | fDevice = device; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 87 | fPaint = paint ? SkNEW_ARGS(SkPaint, (*paint)) : NULL; |
| 88 | } |
| 89 | |
| 90 | ~DeviceCM() { |
| 91 | if (NULL != fDevice) { |
| 92 | fDevice->unlockPixels(); |
| 93 | fDevice->unref(); |
| 94 | } |
| 95 | SkDELETE(fPaint); |
| 96 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 97 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 98 | void updateMC(const SkMatrix& totalMatrix, const SkRegion& totalClip, |
reed@google.com | 46799cd | 2011-02-22 20:56:26 +0000 | [diff] [blame] | 99 | const SkClipStack& clipStack, SkRegion* updateClip) { |
reed@google.com | 6f8f292 | 2011-03-04 22:27:10 +0000 | [diff] [blame^] | 100 | int x = fDevice->getOrigin().x(); |
| 101 | int y = fDevice->getOrigin().y(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 102 | int width = fDevice->width(); |
| 103 | int height = fDevice->height(); |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 104 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 105 | if ((x | y) == 0) { |
| 106 | fMatrix = &totalMatrix; |
| 107 | fClip = totalClip; |
| 108 | } else { |
| 109 | fMatrixStorage = totalMatrix; |
| 110 | fMatrixStorage.postTranslate(SkIntToScalar(-x), |
| 111 | SkIntToScalar(-y)); |
| 112 | fMatrix = &fMatrixStorage; |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 113 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 114 | totalClip.translate(-x, -y, &fClip); |
| 115 | } |
| 116 | |
| 117 | fClip.op(0, 0, width, height, SkRegion::kIntersect_Op); |
| 118 | |
| 119 | // intersect clip, but don't translate it (yet) |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 120 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 121 | if (updateClip) { |
| 122 | updateClip->op(x, y, x + width, y + height, |
| 123 | SkRegion::kDifference_Op); |
| 124 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 125 | |
reed@google.com | 46799cd | 2011-02-22 20:56:26 +0000 | [diff] [blame] | 126 | fDevice->setMatrixClip(*fMatrix, fClip, clipStack); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 127 | |
| 128 | #ifdef SK_DEBUG |
| 129 | if (!fClip.isEmpty()) { |
| 130 | SkIRect deviceR; |
| 131 | deviceR.set(0, 0, width, height); |
| 132 | SkASSERT(deviceR.contains(fClip.getBounds())); |
| 133 | } |
| 134 | #endif |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 135 | // default is to assume no external matrix |
| 136 | fMVMatrix = NULL; |
| 137 | fExtMatrix = NULL; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 138 | } |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 139 | |
| 140 | // can only be called after calling updateMC() |
| 141 | void updateExternalMatrix(const SkMatrix& extM, const SkMatrix& extI) { |
| 142 | fMVMatrixStorage.setConcat(extI, *fMatrix); |
| 143 | fMVMatrix = &fMVMatrixStorage; |
| 144 | fExtMatrix = &extM; // assumes extM has long life-time (owned by canvas) |
| 145 | } |
| 146 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 147 | private: |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 148 | SkMatrix fMatrixStorage, fMVMatrixStorage; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 149 | }; |
| 150 | |
| 151 | /* This is the record we keep for each save/restore level in the stack. |
| 152 | Since a level optionally copies the matrix and/or stack, we have pointers |
| 153 | for these fields. If the value is copied for this level, the copy is |
| 154 | stored in the ...Storage field, and the pointer points to that. If the |
| 155 | value is not copied for this level, we ignore ...Storage, and just point |
| 156 | at the corresponding value in the previous level in the stack. |
| 157 | */ |
| 158 | class SkCanvas::MCRec { |
| 159 | public: |
| 160 | MCRec* fNext; |
| 161 | SkMatrix* fMatrix; // points to either fMatrixStorage or prev MCRec |
| 162 | SkRegion* fRegion; // points to either fRegionStorage or prev MCRec |
| 163 | SkDrawFilter* fFilter; // the current filter (or null) |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 164 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 165 | DeviceCM* fLayer; |
| 166 | /* If there are any layers in the stack, this points to the top-most |
| 167 | one that is at or below this level in the stack (so we know what |
| 168 | bitmap/device to draw into from this level. This value is NOT |
| 169 | reference counted, since the real owner is either our fLayer field, |
| 170 | or a previous one in a lower level.) |
| 171 | */ |
| 172 | DeviceCM* fTopLayer; |
| 173 | |
| 174 | MCRec(const MCRec* prev, int flags) { |
| 175 | if (NULL != prev) { |
| 176 | if (flags & SkCanvas::kMatrix_SaveFlag) { |
| 177 | fMatrixStorage = *prev->fMatrix; |
| 178 | fMatrix = &fMatrixStorage; |
| 179 | } else { |
| 180 | fMatrix = prev->fMatrix; |
| 181 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 182 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 183 | if (flags & SkCanvas::kClip_SaveFlag) { |
| 184 | fRegionStorage = *prev->fRegion; |
| 185 | fRegion = &fRegionStorage; |
| 186 | } else { |
| 187 | fRegion = prev->fRegion; |
| 188 | } |
| 189 | |
| 190 | fFilter = prev->fFilter; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 191 | SkSafeRef(fFilter); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 192 | |
| 193 | fTopLayer = prev->fTopLayer; |
| 194 | } else { // no prev |
| 195 | fMatrixStorage.reset(); |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 196 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 197 | fMatrix = &fMatrixStorage; |
| 198 | fRegion = &fRegionStorage; |
| 199 | fFilter = NULL; |
| 200 | fTopLayer = NULL; |
| 201 | } |
| 202 | fLayer = NULL; |
| 203 | |
| 204 | // don't bother initializing fNext |
| 205 | inc_rec(); |
| 206 | } |
| 207 | ~MCRec() { |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 208 | SkSafeUnref(fFilter); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 209 | SkDELETE(fLayer); |
| 210 | dec_rec(); |
| 211 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 212 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 213 | private: |
| 214 | SkMatrix fMatrixStorage; |
| 215 | SkRegion fRegionStorage; |
| 216 | }; |
| 217 | |
| 218 | class SkDrawIter : public SkDraw { |
| 219 | public: |
| 220 | SkDrawIter(SkCanvas* canvas, bool skipEmptyClips = true) { |
| 221 | fCanvas = canvas; |
| 222 | canvas->updateDeviceCMCache(); |
| 223 | |
reed@google.com | 7d7ca79 | 2011-02-23 22:39:18 +0000 | [diff] [blame] | 224 | fClipStack = &canvas->getTotalClipStack(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 225 | fBounder = canvas->getBounder(); |
| 226 | fCurrLayer = canvas->fMCRec->fTopLayer; |
| 227 | fSkipEmptyClips = skipEmptyClips; |
| 228 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 229 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 230 | bool next() { |
| 231 | // skip over recs with empty clips |
| 232 | if (fSkipEmptyClips) { |
| 233 | while (fCurrLayer && fCurrLayer->fClip.isEmpty()) { |
| 234 | fCurrLayer = fCurrLayer->fNext; |
| 235 | } |
| 236 | } |
| 237 | |
| 238 | if (NULL != fCurrLayer) { |
| 239 | const DeviceCM* rec = fCurrLayer; |
| 240 | |
| 241 | fMatrix = rec->fMatrix; |
| 242 | fClip = &rec->fClip; |
| 243 | fDevice = rec->fDevice; |
| 244 | fBitmap = &fDevice->accessBitmap(true); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 245 | fPaint = rec->fPaint; |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 246 | fMVMatrix = rec->fMVMatrix; |
| 247 | fExtMatrix = rec->fExtMatrix; |
| 248 | SkDEBUGCODE(this->validate();) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 249 | |
| 250 | fCurrLayer = rec->fNext; |
| 251 | if (fBounder) { |
| 252 | fBounder->setClip(fClip); |
| 253 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 254 | // fCurrLayer may be NULL now |
reed@android.com | 199f108 | 2009-06-10 02:12:47 +0000 | [diff] [blame] | 255 | |
bsalomon@google.com | d302f14 | 2011-03-03 13:54:13 +0000 | [diff] [blame] | 256 | fCanvas->prepareForDeviceDraw(fDevice, *fMatrix, *fClip, *fClipStack); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 257 | return true; |
| 258 | } |
| 259 | return false; |
| 260 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 261 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 262 | SkDevice* getDevice() const { return fDevice; } |
reed@google.com | 6f8f292 | 2011-03-04 22:27:10 +0000 | [diff] [blame^] | 263 | int getX() const { return fDevice->getOrigin().x(); } |
| 264 | int getY() const { return fDevice->getOrigin().y(); } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 265 | const SkMatrix& getMatrix() const { return *fMatrix; } |
| 266 | const SkRegion& getClip() const { return *fClip; } |
| 267 | const SkPaint* getPaint() const { return fPaint; } |
reed@google.com | 6f8f292 | 2011-03-04 22:27:10 +0000 | [diff] [blame^] | 268 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 269 | private: |
| 270 | SkCanvas* fCanvas; |
| 271 | const DeviceCM* fCurrLayer; |
| 272 | const SkPaint* fPaint; // May be null. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 273 | SkBool8 fSkipEmptyClips; |
| 274 | |
| 275 | typedef SkDraw INHERITED; |
| 276 | }; |
| 277 | |
| 278 | ///////////////////////////////////////////////////////////////////////////// |
| 279 | |
| 280 | class AutoDrawLooper { |
| 281 | public: |
| 282 | AutoDrawLooper(SkCanvas* canvas, const SkPaint& paint, SkDrawFilter::Type t) |
| 283 | : fCanvas(canvas), fPaint((SkPaint*)&paint), fType(t) { |
| 284 | if ((fLooper = paint.getLooper()) != NULL) { |
| 285 | fLooper->init(canvas, (SkPaint*)&paint); |
| 286 | } else { |
| 287 | fOnce = true; |
| 288 | } |
| 289 | fFilter = canvas->getDrawFilter(); |
| 290 | fNeedFilterRestore = false; |
| 291 | } |
| 292 | |
| 293 | ~AutoDrawLooper() { |
| 294 | if (fNeedFilterRestore) { |
| 295 | SkASSERT(fFilter); |
| 296 | fFilter->restore(fCanvas, fPaint, fType); |
| 297 | } |
| 298 | if (NULL != fLooper) { |
| 299 | fLooper->restore(); |
| 300 | } |
| 301 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 302 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 303 | bool next() { |
| 304 | SkDrawFilter* filter = fFilter; |
| 305 | |
| 306 | // if we drew earlier with a filter, then we need to restore first |
| 307 | if (fNeedFilterRestore) { |
| 308 | SkASSERT(filter); |
| 309 | filter->restore(fCanvas, fPaint, fType); |
| 310 | fNeedFilterRestore = false; |
| 311 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 312 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 313 | bool result; |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 314 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 315 | if (NULL != fLooper) { |
| 316 | result = fLooper->next(); |
| 317 | } else { |
| 318 | result = fOnce; |
| 319 | fOnce = false; |
| 320 | } |
| 321 | |
| 322 | // if we're gonna draw, give the filter a chance to do its work |
| 323 | if (result && NULL != filter) { |
| 324 | fNeedFilterRestore = result = filter->filter(fCanvas, fPaint, |
| 325 | fType); |
| 326 | } |
| 327 | return result; |
| 328 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 329 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 330 | private: |
| 331 | SkDrawLooper* fLooper; |
| 332 | SkDrawFilter* fFilter; |
| 333 | SkCanvas* fCanvas; |
| 334 | SkPaint* fPaint; |
| 335 | SkDrawFilter::Type fType; |
| 336 | bool fOnce; |
| 337 | bool fNeedFilterRestore; |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 338 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 339 | }; |
| 340 | |
| 341 | /* Stack helper for managing a SkBounder. In the destructor, if we were |
| 342 | given a bounder, we call its commit() method, signifying that we are |
| 343 | done accumulating bounds for that draw. |
| 344 | */ |
| 345 | class SkAutoBounderCommit { |
| 346 | public: |
| 347 | SkAutoBounderCommit(SkBounder* bounder) : fBounder(bounder) {} |
| 348 | ~SkAutoBounderCommit() { |
| 349 | if (NULL != fBounder) { |
| 350 | fBounder->commit(); |
| 351 | } |
| 352 | } |
| 353 | private: |
| 354 | SkBounder* fBounder; |
| 355 | }; |
| 356 | |
| 357 | #include "SkColorPriv.h" |
| 358 | |
| 359 | class AutoValidator { |
| 360 | public: |
| 361 | AutoValidator(SkDevice* device) : fDevice(device) {} |
| 362 | ~AutoValidator() { |
| 363 | #ifdef SK_DEBUG |
| 364 | const SkBitmap& bm = fDevice->accessBitmap(false); |
| 365 | if (bm.config() == SkBitmap::kARGB_4444_Config) { |
| 366 | for (int y = 0; y < bm.height(); y++) { |
| 367 | const SkPMColor16* p = bm.getAddr16(0, y); |
| 368 | for (int x = 0; x < bm.width(); x++) { |
| 369 | SkPMColor16 c = p[x]; |
| 370 | SkPMColor16Assert(c); |
| 371 | } |
| 372 | } |
| 373 | } |
| 374 | #endif |
| 375 | } |
| 376 | private: |
| 377 | SkDevice* fDevice; |
| 378 | }; |
| 379 | |
| 380 | ////////// macros to place around the internal draw calls ////////////////// |
| 381 | |
| 382 | #define ITER_BEGIN(paint, type) \ |
| 383 | /* AutoValidator validator(fMCRec->fTopLayer->fDevice); */ \ |
| 384 | AutoDrawLooper looper(this, paint, type); \ |
| 385 | while (looper.next()) { \ |
| 386 | SkAutoBounderCommit ac(fBounder); \ |
| 387 | SkDrawIter iter(this); |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 388 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 389 | #define ITER_END } |
| 390 | |
| 391 | //////////////////////////////////////////////////////////////////////////// |
| 392 | |
| 393 | SkDevice* SkCanvas::init(SkDevice* device) { |
| 394 | fBounder = NULL; |
| 395 | fLocalBoundsCompareTypeDirty = true; |
reed@android.com | ba09de4 | 2010-02-05 20:46:05 +0000 | [diff] [blame] | 396 | fLocalBoundsCompareTypeDirtyBW = true; |
reed@android.com | 199f108 | 2009-06-10 02:12:47 +0000 | [diff] [blame] | 397 | fLastDeviceToGainFocus = NULL; |
agl@chromium.org | 447bcfa | 2009-12-12 00:06:17 +0000 | [diff] [blame] | 398 | fDeviceCMDirty = false; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 399 | |
| 400 | fMCRec = (MCRec*)fMCStack.push_back(); |
| 401 | new (fMCRec) MCRec(NULL, 0); |
| 402 | |
| 403 | fMCRec->fLayer = SkNEW_ARGS(DeviceCM, (NULL, 0, 0, NULL)); |
| 404 | fMCRec->fTopLayer = fMCRec->fLayer; |
| 405 | fMCRec->fNext = NULL; |
| 406 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 407 | fUseExternalMatrix = false; |
| 408 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 409 | return this->setDevice(device); |
| 410 | } |
| 411 | |
vandebo@chromium.org | 8d84fac | 2010-10-13 22:13:05 +0000 | [diff] [blame] | 412 | SkCanvas::SkCanvas(SkDeviceFactory* factory) |
| 413 | : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)), |
| 414 | fDeviceFactory(factory) { |
| 415 | inc_canvas(); |
| 416 | |
vandebo@chromium.org | 8d84fac | 2010-10-13 22:13:05 +0000 | [diff] [blame] | 417 | if (!factory) |
| 418 | fDeviceFactory = SkNEW(SkRasterDeviceFactory); |
| 419 | |
| 420 | this->init(NULL); |
| 421 | } |
| 422 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 423 | SkCanvas::SkCanvas(SkDevice* device) |
vandebo@chromium.org | 8d84fac | 2010-10-13 22:13:05 +0000 | [diff] [blame] | 424 | : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)), |
| 425 | fDeviceFactory(device->getDeviceFactory()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 426 | inc_canvas(); |
| 427 | |
| 428 | this->init(device); |
| 429 | } |
| 430 | |
| 431 | SkCanvas::SkCanvas(const SkBitmap& bitmap) |
| 432 | : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) { |
| 433 | inc_canvas(); |
| 434 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 435 | SkDevice* device = SkNEW_ARGS(SkDevice, (this, bitmap, false)); |
vandebo@chromium.org | 8d84fac | 2010-10-13 22:13:05 +0000 | [diff] [blame] | 436 | fDeviceFactory = device->getDeviceFactory(); |
| 437 | this->init(device)->unref(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 438 | } |
| 439 | |
| 440 | SkCanvas::~SkCanvas() { |
| 441 | // free up the contents of our deque |
| 442 | this->restoreToCount(1); // restore everything but the last |
| 443 | this->internalRestore(); // restore the last, since we're going away |
| 444 | |
vandebo@chromium.org | 8d84fac | 2010-10-13 22:13:05 +0000 | [diff] [blame] | 445 | SkSafeUnref(fBounder); |
vandebo@chromium.org | b70ae31 | 2010-10-15 18:58:19 +0000 | [diff] [blame] | 446 | SkDELETE(fDeviceFactory); |
| 447 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 448 | dec_canvas(); |
| 449 | } |
| 450 | |
| 451 | SkBounder* SkCanvas::setBounder(SkBounder* bounder) { |
| 452 | SkRefCnt_SafeAssign(fBounder, bounder); |
| 453 | return bounder; |
| 454 | } |
| 455 | |
| 456 | SkDrawFilter* SkCanvas::getDrawFilter() const { |
| 457 | return fMCRec->fFilter; |
| 458 | } |
| 459 | |
| 460 | SkDrawFilter* SkCanvas::setDrawFilter(SkDrawFilter* filter) { |
| 461 | SkRefCnt_SafeAssign(fMCRec->fFilter, filter); |
| 462 | return filter; |
| 463 | } |
| 464 | |
| 465 | /////////////////////////////////////////////////////////////////////////////// |
| 466 | |
| 467 | SkDevice* SkCanvas::getDevice() const { |
| 468 | // return root device |
reed@google.com | 4c09d5c | 2011-02-22 13:16:38 +0000 | [diff] [blame] | 469 | SkDeque::F2BIter iter(fMCStack); |
| 470 | MCRec* rec = (MCRec*)iter.next(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 471 | SkASSERT(rec && rec->fLayer); |
| 472 | return rec->fLayer->fDevice; |
| 473 | } |
| 474 | |
| 475 | SkDevice* SkCanvas::setDevice(SkDevice* device) { |
| 476 | // return root device |
reed@google.com | 4c09d5c | 2011-02-22 13:16:38 +0000 | [diff] [blame] | 477 | SkDeque::F2BIter iter(fMCStack); |
| 478 | MCRec* rec = (MCRec*)iter.next(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 479 | SkASSERT(rec && rec->fLayer); |
| 480 | SkDevice* rootDevice = rec->fLayer->fDevice; |
| 481 | |
| 482 | if (rootDevice == device) { |
| 483 | return device; |
| 484 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 485 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 486 | /* Notify the devices that they are going in/out of scope, so they can do |
| 487 | things like lock/unlock their pixels, etc. |
| 488 | */ |
| 489 | if (device) { |
| 490 | device->lockPixels(); |
| 491 | } |
| 492 | if (rootDevice) { |
| 493 | rootDevice->unlockPixels(); |
| 494 | } |
| 495 | |
| 496 | SkRefCnt_SafeAssign(rec->fLayer->fDevice, device); |
| 497 | rootDevice = device; |
| 498 | |
| 499 | fDeviceCMDirty = true; |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 500 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 501 | /* Now we update our initial region to have the bounds of the new device, |
| 502 | and then intersect all of the clips in our stack with these bounds, |
| 503 | to ensure that we can't draw outside of the device's bounds (and trash |
| 504 | memory). |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 505 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 506 | NOTE: this is only a partial-fix, since if the new device is larger than |
| 507 | the previous one, we don't know how to "enlarge" the clips in our stack, |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 508 | so drawing may be artificially restricted. Without keeping a history of |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 509 | all calls to canvas->clipRect() and canvas->clipPath(), we can't exactly |
| 510 | reconstruct the correct clips, so this approximation will have to do. |
| 511 | The caller really needs to restore() back to the base if they want to |
| 512 | accurately take advantage of the new device bounds. |
| 513 | */ |
| 514 | |
| 515 | if (NULL == device) { |
| 516 | rec->fRegion->setEmpty(); |
| 517 | while ((rec = (MCRec*)iter.next()) != NULL) { |
| 518 | (void)rec->fRegion->setEmpty(); |
| 519 | } |
reed@google.com | 5c3d147 | 2011-02-22 19:12:23 +0000 | [diff] [blame] | 520 | fClipStack.reset(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 521 | } else { |
| 522 | // compute our total bounds for all devices |
| 523 | SkIRect bounds; |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 524 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 525 | bounds.set(0, 0, device->width(), device->height()); |
| 526 | |
| 527 | // now jam our 1st clip to be bounds, and intersect the rest with that |
| 528 | rec->fRegion->setRect(bounds); |
| 529 | while ((rec = (MCRec*)iter.next()) != NULL) { |
| 530 | (void)rec->fRegion->op(bounds, SkRegion::kIntersect_Op); |
| 531 | } |
reed@google.com | 5c3d147 | 2011-02-22 19:12:23 +0000 | [diff] [blame] | 532 | fClipStack.clipDevRect(bounds, SkRegion::kIntersect_Op); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 533 | } |
| 534 | return device; |
| 535 | } |
| 536 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 537 | SkDevice* SkCanvas::setBitmapDevice(const SkBitmap& bitmap, bool forLayer) { |
| 538 | SkDevice* device = this->setDevice(SkNEW_ARGS(SkDevice, (this, bitmap, forLayer))); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 539 | device->unref(); |
| 540 | return device; |
| 541 | } |
| 542 | |
reed@google.com | 51df9e3 | 2010-12-23 19:29:18 +0000 | [diff] [blame] | 543 | bool SkCanvas::readPixels(const SkIRect& srcRect, SkBitmap* bitmap) { |
| 544 | SkDevice* device = this->getDevice(); |
| 545 | if (!device) { |
| 546 | return false; |
| 547 | } |
| 548 | return device->readPixels(srcRect, bitmap); |
| 549 | } |
| 550 | |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 551 | SkDeviceFactory* SkCanvas::setDeviceFactory(SkDeviceFactory* factory) { |
| 552 | SkDELETE(fDeviceFactory); |
| 553 | fDeviceFactory = factory; |
reed@google.com | 9b2135a | 2011-01-11 19:45:38 +0000 | [diff] [blame] | 554 | return factory; |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 555 | } |
| 556 | |
| 557 | ////////////////////////////////////////////////////////////////////////////// |
| 558 | |
reed@google.com | 51df9e3 | 2010-12-23 19:29:18 +0000 | [diff] [blame] | 559 | bool SkCanvas::readPixels(SkBitmap* bitmap) { |
| 560 | SkDevice* device = this->getDevice(); |
| 561 | if (!device) { |
| 562 | return false; |
| 563 | } |
| 564 | SkIRect bounds; |
| 565 | bounds.set(0, 0, device->width(), device->height()); |
| 566 | return this->readPixels(bounds, bitmap); |
| 567 | } |
| 568 | |
| 569 | void SkCanvas::writePixels(const SkBitmap& bitmap, int x, int y) { |
| 570 | SkDevice* device = this->getDevice(); |
| 571 | if (device) { |
| 572 | device->writePixels(bitmap, x, y); |
| 573 | } |
| 574 | } |
| 575 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 576 | ////////////////////////////////////////////////////////////////////////////// |
| 577 | |
| 578 | bool SkCanvas::getViewport(SkIPoint* size) const { |
vandebo@chromium.org | 35fc62b | 2010-10-26 19:47:30 +0000 | [diff] [blame] | 579 | if ((getDevice()->getDeviceCapabilities() & SkDevice::kGL_Capability) == 0) |
vandebo@chromium.org | 8d84fac | 2010-10-13 22:13:05 +0000 | [diff] [blame] | 580 | return false; |
| 581 | if (size) |
| 582 | size->set(getDevice()->width(), getDevice()->height()); |
| 583 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 584 | } |
| 585 | |
| 586 | bool SkCanvas::setViewport(int width, int height) { |
vandebo@chromium.org | 35fc62b | 2010-10-26 19:47:30 +0000 | [diff] [blame] | 587 | if ((getDevice()->getDeviceCapabilities() & SkDevice::kGL_Capability) == 0) |
vandebo@chromium.org | 8d84fac | 2010-10-13 22:13:05 +0000 | [diff] [blame] | 588 | return false; |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 589 | |
| 590 | this->setDevice(this->createDevice(SkBitmap::kARGB_8888_Config, width, height, |
| 591 | false, false))->unref(); |
vandebo@chromium.org | 8d84fac | 2010-10-13 22:13:05 +0000 | [diff] [blame] | 592 | return true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 593 | } |
| 594 | |
| 595 | void SkCanvas::updateDeviceCMCache() { |
| 596 | if (fDeviceCMDirty) { |
| 597 | const SkMatrix& totalMatrix = this->getTotalMatrix(); |
| 598 | const SkRegion& totalClip = this->getTotalClip(); |
| 599 | DeviceCM* layer = fMCRec->fTopLayer; |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 600 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 601 | if (NULL == layer->fNext) { // only one layer |
reed@google.com | 46799cd | 2011-02-22 20:56:26 +0000 | [diff] [blame] | 602 | layer->updateMC(totalMatrix, totalClip, fClipStack, NULL); |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 603 | if (fUseExternalMatrix) { |
| 604 | layer->updateExternalMatrix(fExternalMatrix, |
| 605 | fExternalInverse); |
| 606 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 607 | } else { |
| 608 | SkRegion clip; |
| 609 | clip = totalClip; // make a copy |
| 610 | do { |
reed@google.com | 46799cd | 2011-02-22 20:56:26 +0000 | [diff] [blame] | 611 | layer->updateMC(totalMatrix, clip, fClipStack, &clip); |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 612 | if (fUseExternalMatrix) { |
| 613 | layer->updateExternalMatrix(fExternalMatrix, |
| 614 | fExternalInverse); |
| 615 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 616 | } while ((layer = layer->fNext) != NULL); |
| 617 | } |
| 618 | fDeviceCMDirty = false; |
| 619 | } |
| 620 | } |
| 621 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 622 | void SkCanvas::prepareForDeviceDraw(SkDevice* device, const SkMatrix& matrix, |
bsalomon@google.com | d302f14 | 2011-03-03 13:54:13 +0000 | [diff] [blame] | 623 | const SkRegion& clip, |
| 624 | const SkClipStack& clipStack) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 625 | SkASSERT(device); |
reed@android.com | 199f108 | 2009-06-10 02:12:47 +0000 | [diff] [blame] | 626 | if (fLastDeviceToGainFocus != device) { |
bsalomon@google.com | d302f14 | 2011-03-03 13:54:13 +0000 | [diff] [blame] | 627 | device->gainFocus(this, matrix, clip, clipStack); |
reed@android.com | 199f108 | 2009-06-10 02:12:47 +0000 | [diff] [blame] | 628 | fLastDeviceToGainFocus = device; |
| 629 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 630 | } |
| 631 | |
| 632 | /////////////////////////////////////////////////////////////////////////////// |
| 633 | |
| 634 | int SkCanvas::internalSave(SaveFlags flags) { |
| 635 | int saveCount = this->getSaveCount(); // record this before the actual save |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 636 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 637 | MCRec* newTop = (MCRec*)fMCStack.push_back(); |
| 638 | new (newTop) MCRec(fMCRec, flags); // balanced in restore() |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 639 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 640 | newTop->fNext = fMCRec; |
| 641 | fMCRec = newTop; |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 642 | |
reed@google.com | 5c3d147 | 2011-02-22 19:12:23 +0000 | [diff] [blame] | 643 | fClipStack.save(); |
| 644 | SkASSERT(fClipStack.getSaveCount() == this->getSaveCount() - 1); |
| 645 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 646 | return saveCount; |
| 647 | } |
| 648 | |
| 649 | int SkCanvas::save(SaveFlags flags) { |
| 650 | // call shared impl |
| 651 | return this->internalSave(flags); |
| 652 | } |
| 653 | |
| 654 | #define C32MASK (1 << SkBitmap::kARGB_8888_Config) |
| 655 | #define C16MASK (1 << SkBitmap::kRGB_565_Config) |
| 656 | #define C8MASK (1 << SkBitmap::kA8_Config) |
| 657 | |
| 658 | static SkBitmap::Config resolve_config(SkCanvas* canvas, |
| 659 | const SkIRect& bounds, |
| 660 | SkCanvas::SaveFlags flags, |
| 661 | bool* isOpaque) { |
| 662 | *isOpaque = (flags & SkCanvas::kHasAlphaLayer_SaveFlag) == 0; |
| 663 | |
| 664 | #if 0 |
| 665 | // loop through and union all the configs we may draw into |
| 666 | uint32_t configMask = 0; |
| 667 | for (int i = canvas->countLayerDevices() - 1; i >= 0; --i) |
| 668 | { |
| 669 | SkDevice* device = canvas->getLayerDevice(i); |
| 670 | if (device->intersects(bounds)) |
| 671 | configMask |= 1 << device->config(); |
| 672 | } |
| 673 | |
| 674 | // if the caller wants alpha or fullcolor, we can't return 565 |
| 675 | if (flags & (SkCanvas::kFullColorLayer_SaveFlag | |
| 676 | SkCanvas::kHasAlphaLayer_SaveFlag)) |
| 677 | configMask &= ~C16MASK; |
| 678 | |
| 679 | switch (configMask) { |
| 680 | case C8MASK: // if we only have A8, return that |
| 681 | return SkBitmap::kA8_Config; |
| 682 | |
| 683 | case C16MASK: // if we only have 565, return that |
| 684 | return SkBitmap::kRGB_565_Config; |
| 685 | |
| 686 | default: |
| 687 | return SkBitmap::kARGB_8888_Config; // default answer |
| 688 | } |
| 689 | #else |
| 690 | return SkBitmap::kARGB_8888_Config; // default answer |
| 691 | #endif |
| 692 | } |
| 693 | |
| 694 | static bool bounds_affects_clip(SkCanvas::SaveFlags flags) { |
| 695 | return (flags & SkCanvas::kClipToLayer_SaveFlag) != 0; |
| 696 | } |
| 697 | |
| 698 | int SkCanvas::saveLayer(const SkRect* bounds, const SkPaint* paint, |
| 699 | SaveFlags flags) { |
| 700 | // do this before we create the layer. We don't call the public save() since |
| 701 | // that would invoke a possibly overridden virtual |
| 702 | int count = this->internalSave(flags); |
| 703 | |
| 704 | fDeviceCMDirty = true; |
| 705 | |
| 706 | SkIRect ir; |
| 707 | const SkIRect& clipBounds = this->getTotalClip().getBounds(); |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 708 | if (clipBounds.isEmpty()) { |
| 709 | return count; |
| 710 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 711 | |
| 712 | if (NULL != bounds) { |
| 713 | SkRect r; |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 714 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 715 | this->getTotalMatrix().mapRect(&r, *bounds); |
| 716 | r.roundOut(&ir); |
| 717 | // early exit if the layer's bounds are clipped out |
| 718 | if (!ir.intersect(clipBounds)) { |
| 719 | if (bounds_affects_clip(flags)) |
| 720 | fMCRec->fRegion->setEmpty(); |
| 721 | return count; |
| 722 | } |
| 723 | } else { // no user bounds, so just use the clip |
| 724 | ir = clipBounds; |
| 725 | } |
| 726 | |
reed@google.com | 5c3d147 | 2011-02-22 19:12:23 +0000 | [diff] [blame] | 727 | fClipStack.clipDevRect(ir, SkRegion::kIntersect_Op); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 728 | // early exit if the clip is now empty |
| 729 | if (bounds_affects_clip(flags) && |
| 730 | !fMCRec->fRegion->op(ir, SkRegion::kIntersect_Op)) { |
| 731 | return count; |
| 732 | } |
| 733 | |
| 734 | bool isOpaque; |
| 735 | SkBitmap::Config config = resolve_config(this, ir, flags, &isOpaque); |
| 736 | |
| 737 | SkDevice* device = this->createDevice(config, ir.width(), ir.height(), |
| 738 | isOpaque, true); |
reed@google.com | 6f8f292 | 2011-03-04 22:27:10 +0000 | [diff] [blame^] | 739 | device->setOrigin(ir.fLeft, ir.fTop); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 740 | DeviceCM* layer = SkNEW_ARGS(DeviceCM, (device, ir.fLeft, ir.fTop, paint)); |
| 741 | device->unref(); |
| 742 | |
| 743 | layer->fNext = fMCRec->fTopLayer; |
| 744 | fMCRec->fLayer = layer; |
| 745 | fMCRec->fTopLayer = layer; // this field is NOT an owner of layer |
| 746 | |
| 747 | return count; |
| 748 | } |
| 749 | |
| 750 | int SkCanvas::saveLayerAlpha(const SkRect* bounds, U8CPU alpha, |
| 751 | SaveFlags flags) { |
| 752 | if (0xFF == alpha) { |
| 753 | return this->saveLayer(bounds, NULL, flags); |
| 754 | } else { |
| 755 | SkPaint tmpPaint; |
| 756 | tmpPaint.setAlpha(alpha); |
| 757 | return this->saveLayer(bounds, &tmpPaint, flags); |
| 758 | } |
| 759 | } |
| 760 | |
| 761 | void SkCanvas::restore() { |
| 762 | // check for underflow |
| 763 | if (fMCStack.count() > 1) { |
| 764 | this->internalRestore(); |
| 765 | } |
| 766 | } |
| 767 | |
| 768 | void SkCanvas::internalRestore() { |
| 769 | SkASSERT(fMCStack.count() != 0); |
| 770 | |
| 771 | fDeviceCMDirty = true; |
| 772 | fLocalBoundsCompareTypeDirty = true; |
reed@android.com | ba09de4 | 2010-02-05 20:46:05 +0000 | [diff] [blame] | 773 | fLocalBoundsCompareTypeDirtyBW = true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 774 | |
reed@google.com | 5c3d147 | 2011-02-22 19:12:23 +0000 | [diff] [blame] | 775 | fClipStack.restore(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 776 | // reserve our layer (if any) |
| 777 | DeviceCM* layer = fMCRec->fLayer; // may be null |
| 778 | // now detach it from fMCRec so we can pop(). Gets freed after its drawn |
| 779 | fMCRec->fLayer = NULL; |
| 780 | |
| 781 | // now do the normal restore() |
| 782 | fMCRec->~MCRec(); // balanced in save() |
| 783 | fMCStack.pop_back(); |
| 784 | fMCRec = (MCRec*)fMCStack.back(); |
| 785 | |
| 786 | /* Time to draw the layer's offscreen. We can't call the public drawSprite, |
| 787 | since if we're being recorded, we don't want to record this (the |
| 788 | recorder will have already recorded the restore). |
| 789 | */ |
| 790 | if (NULL != layer) { |
| 791 | if (layer->fNext) { |
reed@google.com | 6f8f292 | 2011-03-04 22:27:10 +0000 | [diff] [blame^] | 792 | const SkIPoint& origin = layer->fDevice->getOrigin(); |
| 793 | this->drawDevice(layer->fDevice, origin.x(), origin.y(), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 794 | layer->fPaint); |
| 795 | // reset this, since drawDevice will have set it to true |
| 796 | fDeviceCMDirty = true; |
| 797 | } |
| 798 | SkDELETE(layer); |
| 799 | } |
reed@google.com | 5c3d147 | 2011-02-22 19:12:23 +0000 | [diff] [blame] | 800 | |
| 801 | SkASSERT(fClipStack.getSaveCount() == this->getSaveCount() - 1); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 802 | } |
| 803 | |
| 804 | int SkCanvas::getSaveCount() const { |
| 805 | return fMCStack.count(); |
| 806 | } |
| 807 | |
| 808 | void SkCanvas::restoreToCount(int count) { |
| 809 | // sanity check |
| 810 | if (count < 1) { |
| 811 | count = 1; |
| 812 | } |
| 813 | while (fMCStack.count() > count) { |
| 814 | this->restore(); |
| 815 | } |
| 816 | } |
| 817 | |
| 818 | ///////////////////////////////////////////////////////////////////////////// |
| 819 | |
| 820 | // can't draw it if its empty, or its too big for a fixed-point width or height |
| 821 | static bool reject_bitmap(const SkBitmap& bitmap) { |
reed@google.com | a76de3d | 2011-01-13 18:30:42 +0000 | [diff] [blame] | 822 | return bitmap.width() <= 0 || bitmap.height() <= 0 |
| 823 | #ifndef SK_ALLOW_OVER_32K_BITMAPS |
| 824 | || bitmap.width() > 32767 || bitmap.height() > 32767 |
| 825 | #endif |
| 826 | ; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 827 | } |
| 828 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 829 | void SkCanvas::internalDrawBitmap(const SkBitmap& bitmap, const SkIRect* srcRect, |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 830 | const SkMatrix& matrix, const SkPaint* paint) { |
| 831 | if (reject_bitmap(bitmap)) { |
| 832 | return; |
| 833 | } |
| 834 | |
| 835 | if (NULL == paint) { |
| 836 | SkPaint tmpPaint; |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 837 | this->commonDrawBitmap(bitmap, srcRect, matrix, tmpPaint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 838 | } else { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 839 | this->commonDrawBitmap(bitmap, srcRect, matrix, *paint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 840 | } |
| 841 | } |
| 842 | |
| 843 | void SkCanvas::drawDevice(SkDevice* device, int x, int y, |
| 844 | const SkPaint* paint) { |
| 845 | SkPaint tmp; |
| 846 | if (NULL == paint) { |
| 847 | tmp.setDither(true); |
| 848 | paint = &tmp; |
| 849 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 850 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 851 | ITER_BEGIN(*paint, SkDrawFilter::kBitmap_Type) |
| 852 | while (iter.next()) { |
| 853 | iter.fDevice->drawDevice(iter, device, x - iter.getX(), y - iter.getY(), |
| 854 | *paint); |
| 855 | } |
| 856 | ITER_END |
| 857 | } |
| 858 | |
| 859 | ///////////////////////////////////////////////////////////////////////////// |
| 860 | |
| 861 | bool SkCanvas::translate(SkScalar dx, SkScalar dy) { |
| 862 | fDeviceCMDirty = true; |
| 863 | fLocalBoundsCompareTypeDirty = true; |
reed@android.com | ba09de4 | 2010-02-05 20:46:05 +0000 | [diff] [blame] | 864 | fLocalBoundsCompareTypeDirtyBW = true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 865 | return fMCRec->fMatrix->preTranslate(dx, dy); |
| 866 | } |
| 867 | |
| 868 | bool SkCanvas::scale(SkScalar sx, SkScalar sy) { |
| 869 | fDeviceCMDirty = true; |
| 870 | fLocalBoundsCompareTypeDirty = true; |
reed@android.com | ba09de4 | 2010-02-05 20:46:05 +0000 | [diff] [blame] | 871 | fLocalBoundsCompareTypeDirtyBW = true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 872 | return fMCRec->fMatrix->preScale(sx, sy); |
| 873 | } |
| 874 | |
| 875 | bool SkCanvas::rotate(SkScalar degrees) { |
| 876 | fDeviceCMDirty = true; |
| 877 | fLocalBoundsCompareTypeDirty = true; |
reed@android.com | ba09de4 | 2010-02-05 20:46:05 +0000 | [diff] [blame] | 878 | fLocalBoundsCompareTypeDirtyBW = true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 879 | return fMCRec->fMatrix->preRotate(degrees); |
| 880 | } |
| 881 | |
| 882 | bool SkCanvas::skew(SkScalar sx, SkScalar sy) { |
| 883 | fDeviceCMDirty = true; |
| 884 | fLocalBoundsCompareTypeDirty = true; |
reed@android.com | ba09de4 | 2010-02-05 20:46:05 +0000 | [diff] [blame] | 885 | fLocalBoundsCompareTypeDirtyBW = true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 886 | return fMCRec->fMatrix->preSkew(sx, sy); |
| 887 | } |
| 888 | |
| 889 | bool SkCanvas::concat(const SkMatrix& matrix) { |
| 890 | fDeviceCMDirty = true; |
| 891 | fLocalBoundsCompareTypeDirty = true; |
reed@android.com | ba09de4 | 2010-02-05 20:46:05 +0000 | [diff] [blame] | 892 | fLocalBoundsCompareTypeDirtyBW = true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 893 | return fMCRec->fMatrix->preConcat(matrix); |
| 894 | } |
| 895 | |
| 896 | void SkCanvas::setMatrix(const SkMatrix& matrix) { |
| 897 | fDeviceCMDirty = true; |
| 898 | fLocalBoundsCompareTypeDirty = true; |
reed@android.com | ba09de4 | 2010-02-05 20:46:05 +0000 | [diff] [blame] | 899 | fLocalBoundsCompareTypeDirtyBW = true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 900 | *fMCRec->fMatrix = matrix; |
| 901 | } |
| 902 | |
| 903 | // this is not virtual, so it must call a virtual method so that subclasses |
| 904 | // will see its action |
| 905 | void SkCanvas::resetMatrix() { |
| 906 | SkMatrix matrix; |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 907 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 908 | matrix.reset(); |
| 909 | this->setMatrix(matrix); |
| 910 | } |
| 911 | |
| 912 | ////////////////////////////////////////////////////////////////////////////// |
| 913 | |
| 914 | bool SkCanvas::clipRect(const SkRect& rect, SkRegion::Op op) { |
reed@google.com | 5c3d147 | 2011-02-22 19:12:23 +0000 | [diff] [blame] | 915 | AutoValidateClip avc(this); |
| 916 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 917 | fDeviceCMDirty = true; |
| 918 | fLocalBoundsCompareTypeDirty = true; |
reed@android.com | ba09de4 | 2010-02-05 20:46:05 +0000 | [diff] [blame] | 919 | fLocalBoundsCompareTypeDirtyBW = true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 920 | |
| 921 | if (fMCRec->fMatrix->rectStaysRect()) { |
reed@android.com | 98de2bd | 2009-03-02 19:41:36 +0000 | [diff] [blame] | 922 | // for these simpler matrices, we can stay a rect ever after applying |
| 923 | // the matrix. This means we don't have to a) make a path, and b) tell |
| 924 | // the region code to scan-convert the path, only to discover that it |
| 925 | // is really just a rect. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 926 | SkRect r; |
| 927 | SkIRect ir; |
| 928 | |
| 929 | fMCRec->fMatrix->mapRect(&r, rect); |
reed@google.com | 5c3d147 | 2011-02-22 19:12:23 +0000 | [diff] [blame] | 930 | fClipStack.clipDevRect(r, op); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 931 | r.round(&ir); |
| 932 | return fMCRec->fRegion->op(ir, op); |
| 933 | } else { |
reed@android.com | 98de2bd | 2009-03-02 19:41:36 +0000 | [diff] [blame] | 934 | // since we're rotate or some such thing, we convert the rect to a path |
| 935 | // and clip against that, since it can handle any matrix. However, to |
| 936 | // avoid recursion in the case where we are subclassed (e.g. Pictures) |
| 937 | // we explicitly call "our" version of clipPath. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 938 | SkPath path; |
| 939 | |
| 940 | path.addRect(rect); |
reed@android.com | 98de2bd | 2009-03-02 19:41:36 +0000 | [diff] [blame] | 941 | return this->SkCanvas::clipPath(path, op); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 942 | } |
| 943 | } |
| 944 | |
reed@google.com | 819c921 | 2011-02-23 18:56:55 +0000 | [diff] [blame] | 945 | static bool clipPathHelper(const SkCanvas* canvas, SkRegion* currRgn, |
| 946 | const SkPath& devPath, SkRegion::Op op) { |
reed@google.com | 759876a | 2011-03-03 14:32:51 +0000 | [diff] [blame] | 947 | // base is used to limit the size (and therefore memory allocation) of the |
| 948 | // region that results from scan converting devPath. |
| 949 | SkRegion base; |
| 950 | |
reed@google.com | 819c921 | 2011-02-23 18:56:55 +0000 | [diff] [blame] | 951 | if (SkRegion::kIntersect_Op == op) { |
reed@google.com | 759876a | 2011-03-03 14:32:51 +0000 | [diff] [blame] | 952 | // since we are intersect, we can do better (tighter) with currRgn's |
| 953 | // bounds, than just using the device. However, if currRgn is complex, |
| 954 | // our region blitter may hork, so we do that case in two steps. |
| 955 | if (currRgn->isRect()) { |
| 956 | return currRgn->setPath(devPath, *currRgn); |
| 957 | } else { |
| 958 | base.setRect(currRgn->getBounds()); |
| 959 | SkRegion rgn; |
| 960 | rgn.setPath(devPath, base); |
| 961 | return currRgn->op(rgn, op); |
| 962 | } |
reed@google.com | 819c921 | 2011-02-23 18:56:55 +0000 | [diff] [blame] | 963 | } else { |
reed@google.com | 819c921 | 2011-02-23 18:56:55 +0000 | [diff] [blame] | 964 | const SkBitmap& bm = canvas->getDevice()->accessBitmap(false); |
| 965 | base.setRect(0, 0, bm.width(), bm.height()); |
| 966 | |
| 967 | if (SkRegion::kReplace_Op == op) { |
| 968 | return currRgn->setPath(devPath, base); |
| 969 | } else { |
| 970 | SkRegion rgn; |
| 971 | rgn.setPath(devPath, base); |
| 972 | return currRgn->op(rgn, op); |
| 973 | } |
| 974 | } |
| 975 | } |
| 976 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 977 | bool SkCanvas::clipPath(const SkPath& path, SkRegion::Op op) { |
reed@google.com | 5c3d147 | 2011-02-22 19:12:23 +0000 | [diff] [blame] | 978 | AutoValidateClip avc(this); |
| 979 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 980 | fDeviceCMDirty = true; |
| 981 | fLocalBoundsCompareTypeDirty = true; |
reed@android.com | ba09de4 | 2010-02-05 20:46:05 +0000 | [diff] [blame] | 982 | fLocalBoundsCompareTypeDirtyBW = true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 983 | |
| 984 | SkPath devPath; |
| 985 | path.transform(*fMCRec->fMatrix, &devPath); |
| 986 | |
reed@google.com | 5c3d147 | 2011-02-22 19:12:23 +0000 | [diff] [blame] | 987 | // if we called path.swap() we could avoid a deep copy of this path |
| 988 | fClipStack.clipDevPath(devPath, op); |
| 989 | |
reed@google.com | 819c921 | 2011-02-23 18:56:55 +0000 | [diff] [blame] | 990 | return clipPathHelper(this, fMCRec->fRegion, devPath, op); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 991 | } |
| 992 | |
| 993 | bool SkCanvas::clipRegion(const SkRegion& rgn, SkRegion::Op op) { |
reed@google.com | 5c3d147 | 2011-02-22 19:12:23 +0000 | [diff] [blame] | 994 | AutoValidateClip avc(this); |
| 995 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 996 | fDeviceCMDirty = true; |
| 997 | fLocalBoundsCompareTypeDirty = true; |
reed@android.com | ba09de4 | 2010-02-05 20:46:05 +0000 | [diff] [blame] | 998 | fLocalBoundsCompareTypeDirtyBW = true; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 999 | |
reed@google.com | 5c3d147 | 2011-02-22 19:12:23 +0000 | [diff] [blame] | 1000 | // todo: signal fClipStack that we have a region, and therefore (I guess) |
| 1001 | // we have to ignore it, and use the region directly? |
| 1002 | fClipStack.clipDevRect(rgn.getBounds()); |
| 1003 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1004 | return fMCRec->fRegion->op(rgn, op); |
| 1005 | } |
| 1006 | |
reed@google.com | 819c921 | 2011-02-23 18:56:55 +0000 | [diff] [blame] | 1007 | #ifdef SK_DEBUG |
| 1008 | void SkCanvas::validateClip() const { |
| 1009 | // construct clipRgn from the clipstack |
| 1010 | const SkDevice* device = this->getDevice(); |
| 1011 | SkIRect ir; |
| 1012 | ir.set(0, 0, device->width(), device->height()); |
| 1013 | SkRegion clipRgn(ir); |
| 1014 | |
| 1015 | SkClipStack::B2FIter iter(fClipStack); |
| 1016 | const SkClipStack::B2FIter::Clip* clip; |
| 1017 | while ((clip = iter.next()) != NULL) { |
| 1018 | if (clip->fPath) { |
| 1019 | clipPathHelper(this, &clipRgn, *clip->fPath, clip->fOp); |
| 1020 | } else if (clip->fRect) { |
| 1021 | clip->fRect->round(&ir); |
| 1022 | clipRgn.op(ir, clip->fOp); |
| 1023 | } else { |
reed@google.com | dca7acb | 2011-02-23 21:47:37 +0000 | [diff] [blame] | 1024 | clipRgn.setEmpty(); |
reed@google.com | 819c921 | 2011-02-23 18:56:55 +0000 | [diff] [blame] | 1025 | } |
| 1026 | } |
| 1027 | |
reed@google.com | 6f8f292 | 2011-03-04 22:27:10 +0000 | [diff] [blame^] | 1028 | #if 0 // enable this locally for testing |
reed@google.com | 819c921 | 2011-02-23 18:56:55 +0000 | [diff] [blame] | 1029 | // now compare against the current rgn |
| 1030 | const SkRegion& rgn = this->getTotalClip(); |
| 1031 | SkASSERT(rgn == clipRgn); |
reed@google.com | 02878b8 | 2011-02-24 13:04:42 +0000 | [diff] [blame] | 1032 | #endif |
reed@google.com | 819c921 | 2011-02-23 18:56:55 +0000 | [diff] [blame] | 1033 | } |
| 1034 | #endif |
| 1035 | |
reed@google.com | 5c3d147 | 2011-02-22 19:12:23 +0000 | [diff] [blame] | 1036 | /////////////////////////////////////////////////////////////////////////////// |
| 1037 | |
reed@android.com | ba09de4 | 2010-02-05 20:46:05 +0000 | [diff] [blame] | 1038 | void SkCanvas::computeLocalClipBoundsCompareType(EdgeType et) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1039 | SkRect r; |
reed@android.com | ba09de4 | 2010-02-05 20:46:05 +0000 | [diff] [blame] | 1040 | SkRectCompareType& rCompare = et == kAA_EdgeType ? fLocalBoundsCompareType : |
| 1041 | fLocalBoundsCompareTypeBW; |
| 1042 | |
| 1043 | if (!this->getClipBounds(&r, et)) { |
| 1044 | rCompare.setEmpty(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1045 | } else { |
reed@android.com | ba09de4 | 2010-02-05 20:46:05 +0000 | [diff] [blame] | 1046 | rCompare.set(SkScalarToCompareType(r.fLeft), |
| 1047 | SkScalarToCompareType(r.fTop), |
| 1048 | SkScalarToCompareType(r.fRight), |
| 1049 | SkScalarToCompareType(r.fBottom)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1050 | } |
| 1051 | } |
| 1052 | |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 1053 | /* current impl ignores edgetype, and relies on |
| 1054 | getLocalClipBoundsCompareType(), which always returns a value assuming |
| 1055 | antialiasing (worst case) |
| 1056 | */ |
reed@android.com | ba09de4 | 2010-02-05 20:46:05 +0000 | [diff] [blame] | 1057 | bool SkCanvas::quickReject(const SkRect& rect, EdgeType et) const { |
wjmaclean@chromium.org | 116b2bc | 2011-02-07 17:48:37 +0000 | [diff] [blame] | 1058 | |
| 1059 | if (!rect.hasValidCoordinates()) |
| 1060 | return true; |
| 1061 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1062 | if (fMCRec->fRegion->isEmpty()) { |
| 1063 | return true; |
| 1064 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1065 | |
reed@android.com | a380ae4 | 2009-07-21 01:17:02 +0000 | [diff] [blame] | 1066 | if (fMCRec->fMatrix->getType() & SkMatrix::kPerspective_Mask) { |
| 1067 | SkRect dst; |
| 1068 | fMCRec->fMatrix->mapRect(&dst, rect); |
| 1069 | SkIRect idst; |
| 1070 | dst.roundOut(&idst); |
| 1071 | return !SkIRect::Intersects(idst, fMCRec->fRegion->getBounds()); |
| 1072 | } else { |
reed@android.com | ba09de4 | 2010-02-05 20:46:05 +0000 | [diff] [blame] | 1073 | const SkRectCompareType& clipR = this->getLocalClipBoundsCompareType(et); |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 1074 | |
reed@android.com | a380ae4 | 2009-07-21 01:17:02 +0000 | [diff] [blame] | 1075 | // for speed, do the most likely reject compares first |
| 1076 | SkScalarCompareType userT = SkScalarToCompareType(rect.fTop); |
| 1077 | SkScalarCompareType userB = SkScalarToCompareType(rect.fBottom); |
| 1078 | if (userT >= clipR.fBottom || userB <= clipR.fTop) { |
| 1079 | return true; |
| 1080 | } |
| 1081 | SkScalarCompareType userL = SkScalarToCompareType(rect.fLeft); |
| 1082 | SkScalarCompareType userR = SkScalarToCompareType(rect.fRight); |
| 1083 | if (userL >= clipR.fRight || userR <= clipR.fLeft) { |
| 1084 | return true; |
| 1085 | } |
| 1086 | return false; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1087 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1088 | } |
| 1089 | |
| 1090 | bool SkCanvas::quickReject(const SkPath& path, EdgeType et) const { |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 1091 | return path.isEmpty() || this->quickReject(path.getBounds(), et); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1092 | } |
| 1093 | |
| 1094 | bool SkCanvas::quickRejectY(SkScalar top, SkScalar bottom, EdgeType et) const { |
| 1095 | /* current impl ignores edgetype, and relies on |
| 1096 | getLocalClipBoundsCompareType(), which always returns a value assuming |
| 1097 | antialiasing (worst case) |
| 1098 | */ |
| 1099 | |
| 1100 | if (fMCRec->fRegion->isEmpty()) { |
| 1101 | return true; |
| 1102 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1103 | |
reed@android.com | aefd2bc | 2009-03-30 21:02:14 +0000 | [diff] [blame] | 1104 | SkScalarCompareType userT = SkScalarToCompareType(top); |
| 1105 | SkScalarCompareType userB = SkScalarToCompareType(bottom); |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1106 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1107 | // check for invalid user Y coordinates (i.e. empty) |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 1108 | // reed: why do we need to do this check, since it slows us down? |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1109 | if (userT >= userB) { |
| 1110 | return true; |
| 1111 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1112 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1113 | // check if we are above or below the local clip bounds |
| 1114 | const SkRectCompareType& clipR = this->getLocalClipBoundsCompareType(); |
| 1115 | return userT >= clipR.fBottom || userB <= clipR.fTop; |
| 1116 | } |
| 1117 | |
| 1118 | bool SkCanvas::getClipBounds(SkRect* bounds, EdgeType et) const { |
| 1119 | const SkRegion& clip = *fMCRec->fRegion; |
| 1120 | if (clip.isEmpty()) { |
| 1121 | if (bounds) { |
| 1122 | bounds->setEmpty(); |
| 1123 | } |
| 1124 | return false; |
| 1125 | } |
| 1126 | |
reed@android.com | d9c0f0b | 2009-02-06 22:39:37 +0000 | [diff] [blame] | 1127 | SkMatrix inverse; |
| 1128 | // if we can't invert the CTM, we can't return local clip bounds |
| 1129 | if (!fMCRec->fMatrix->invert(&inverse)) { |
reed@android.com | 72dcd3a | 2009-05-18 15:46:29 +0000 | [diff] [blame] | 1130 | if (bounds) { |
| 1131 | bounds->setEmpty(); |
| 1132 | } |
reed@android.com | d9c0f0b | 2009-02-06 22:39:37 +0000 | [diff] [blame] | 1133 | return false; |
| 1134 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1135 | |
reed@android.com | d9c0f0b | 2009-02-06 22:39:37 +0000 | [diff] [blame] | 1136 | if (NULL != bounds) { |
| 1137 | SkRect r; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1138 | // get the clip's bounds |
| 1139 | const SkIRect& ibounds = clip.getBounds(); |
| 1140 | // adjust it outwards if we are antialiasing |
| 1141 | int inset = (kAA_EdgeType == et); |
| 1142 | r.iset(ibounds.fLeft - inset, ibounds.fTop - inset, |
| 1143 | ibounds.fRight + inset, ibounds.fBottom + inset); |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1144 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1145 | // invert into local coordinates |
| 1146 | inverse.mapRect(bounds, r); |
| 1147 | } |
| 1148 | return true; |
| 1149 | } |
| 1150 | |
| 1151 | const SkMatrix& SkCanvas::getTotalMatrix() const { |
| 1152 | return *fMCRec->fMatrix; |
| 1153 | } |
| 1154 | |
| 1155 | const SkRegion& SkCanvas::getTotalClip() const { |
| 1156 | return *fMCRec->fRegion; |
| 1157 | } |
| 1158 | |
reed@google.com | 7d7ca79 | 2011-02-23 22:39:18 +0000 | [diff] [blame] | 1159 | const SkClipStack& SkCanvas::getTotalClipStack() const { |
| 1160 | return fClipStack; |
| 1161 | } |
| 1162 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1163 | void SkCanvas::setExternalMatrix(const SkMatrix* matrix) { |
| 1164 | if (NULL == matrix || matrix->isIdentity()) { |
| 1165 | if (fUseExternalMatrix) { |
| 1166 | fDeviceCMDirty = true; |
| 1167 | } |
| 1168 | fUseExternalMatrix = false; |
| 1169 | } else { |
| 1170 | fUseExternalMatrix = true; |
| 1171 | fDeviceCMDirty = true; // |= (fExternalMatrix != *matrix) |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1172 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1173 | fExternalMatrix = *matrix; |
| 1174 | matrix->invert(&fExternalInverse); |
| 1175 | } |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1176 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1177 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1178 | SkDevice* SkCanvas::createDevice(SkBitmap::Config config, int width, int height, |
| 1179 | bool isOpaque, bool forLayer) { |
| 1180 | return fDeviceFactory->newDevice(this, config, width, height, isOpaque, forLayer); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1181 | } |
| 1182 | |
| 1183 | ////////////////////////////////////////////////////////////////////////////// |
| 1184 | // These are the virtual drawing methods |
| 1185 | ////////////////////////////////////////////////////////////////////////////// |
| 1186 | |
| 1187 | void SkCanvas::drawPaint(const SkPaint& paint) { |
| 1188 | ITER_BEGIN(paint, SkDrawFilter::kPaint_Type) |
| 1189 | |
| 1190 | while (iter.next()) { |
| 1191 | iter.fDevice->drawPaint(iter, paint); |
| 1192 | } |
| 1193 | |
| 1194 | ITER_END |
| 1195 | } |
| 1196 | |
| 1197 | void SkCanvas::drawPoints(PointMode mode, size_t count, const SkPoint pts[], |
| 1198 | const SkPaint& paint) { |
| 1199 | if ((long)count <= 0) { |
| 1200 | return; |
| 1201 | } |
| 1202 | |
| 1203 | SkASSERT(pts != NULL); |
| 1204 | |
| 1205 | ITER_BEGIN(paint, SkDrawFilter::kPoint_Type) |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1206 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1207 | while (iter.next()) { |
| 1208 | iter.fDevice->drawPoints(iter, mode, count, pts, paint); |
| 1209 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1210 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1211 | ITER_END |
| 1212 | } |
| 1213 | |
| 1214 | void SkCanvas::drawRect(const SkRect& r, const SkPaint& paint) { |
| 1215 | if (paint.canComputeFastBounds()) { |
| 1216 | SkRect storage; |
| 1217 | if (this->quickReject(paint.computeFastBounds(r, &storage), |
| 1218 | paint2EdgeType(&paint))) { |
| 1219 | return; |
| 1220 | } |
| 1221 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1222 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1223 | ITER_BEGIN(paint, SkDrawFilter::kRect_Type) |
| 1224 | |
| 1225 | while (iter.next()) { |
| 1226 | iter.fDevice->drawRect(iter, r, paint); |
| 1227 | } |
| 1228 | |
| 1229 | ITER_END |
| 1230 | } |
| 1231 | |
| 1232 | void SkCanvas::drawPath(const SkPath& path, const SkPaint& paint) { |
| 1233 | if (paint.canComputeFastBounds()) { |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 1234 | SkRect storage; |
| 1235 | const SkRect& bounds = path.getBounds(); |
| 1236 | if (this->quickReject(paint.computeFastBounds(bounds, &storage), |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1237 | paint2EdgeType(&paint))) { |
| 1238 | return; |
| 1239 | } |
| 1240 | } |
| 1241 | |
| 1242 | ITER_BEGIN(paint, SkDrawFilter::kPath_Type) |
| 1243 | |
| 1244 | while (iter.next()) { |
| 1245 | iter.fDevice->drawPath(iter, path, paint); |
| 1246 | } |
| 1247 | |
| 1248 | ITER_END |
| 1249 | } |
| 1250 | |
| 1251 | void SkCanvas::drawBitmap(const SkBitmap& bitmap, SkScalar x, SkScalar y, |
| 1252 | const SkPaint* paint) { |
| 1253 | SkDEBUGCODE(bitmap.validate();) |
| 1254 | |
| 1255 | if (NULL == paint || (paint->getMaskFilter() == NULL)) { |
| 1256 | SkRect fastBounds; |
| 1257 | fastBounds.set(x, y, |
| 1258 | x + SkIntToScalar(bitmap.width()), |
| 1259 | y + SkIntToScalar(bitmap.height())); |
| 1260 | if (this->quickReject(fastBounds, paint2EdgeType(paint))) { |
| 1261 | return; |
| 1262 | } |
| 1263 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1264 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1265 | SkMatrix matrix; |
| 1266 | matrix.setTranslate(x, y); |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1267 | this->internalDrawBitmap(bitmap, NULL, matrix, paint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1268 | } |
| 1269 | |
| 1270 | void SkCanvas::drawBitmapRect(const SkBitmap& bitmap, const SkIRect* src, |
| 1271 | const SkRect& dst, const SkPaint* paint) { |
| 1272 | if (bitmap.width() == 0 || bitmap.height() == 0 || dst.isEmpty()) { |
| 1273 | return; |
| 1274 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1275 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1276 | // do this now, to avoid the cost of calling extract for RLE bitmaps |
| 1277 | if (this->quickReject(dst, paint2EdgeType(paint))) { |
| 1278 | return; |
| 1279 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1280 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1281 | const SkBitmap* bitmapPtr = &bitmap; |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1282 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1283 | SkMatrix matrix; |
reed@android.com | 8789999 | 2009-10-16 14:48:38 +0000 | [diff] [blame] | 1284 | SkRect tmpSrc; |
| 1285 | if (src) { |
| 1286 | tmpSrc.set(*src); |
| 1287 | // if the extract process clipped off the top or left of the |
| 1288 | // original, we adjust for that here to get the position right. |
| 1289 | if (tmpSrc.fLeft > 0) { |
| 1290 | tmpSrc.fRight -= tmpSrc.fLeft; |
| 1291 | tmpSrc.fLeft = 0; |
reed@android.com | fead49e | 2009-10-15 18:51:46 +0000 | [diff] [blame] | 1292 | } |
reed@android.com | 8789999 | 2009-10-16 14:48:38 +0000 | [diff] [blame] | 1293 | if (tmpSrc.fTop > 0) { |
| 1294 | tmpSrc.fBottom -= tmpSrc.fTop; |
| 1295 | tmpSrc.fTop = 0; |
| 1296 | } |
| 1297 | } else { |
| 1298 | tmpSrc.set(0, 0, SkIntToScalar(bitmap.width()), |
| 1299 | SkIntToScalar(bitmap.height())); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1300 | } |
reed@android.com | 8789999 | 2009-10-16 14:48:38 +0000 | [diff] [blame] | 1301 | matrix.setRectToRect(tmpSrc, dst, SkMatrix::kFill_ScaleToFit); |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1302 | |
| 1303 | // ensure that src is "valid" before we pass it to our internal routines |
| 1304 | // and to SkDevice. i.e. sure it is contained inside the original bitmap. |
| 1305 | SkIRect tmpISrc; |
| 1306 | if (src) { |
| 1307 | tmpISrc.set(0, 0, bitmap.width(), bitmap.height()); |
| 1308 | tmpISrc.intersect(*src); |
| 1309 | src = &tmpISrc; |
| 1310 | } |
| 1311 | this->internalDrawBitmap(*bitmapPtr, src, matrix, paint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1312 | } |
| 1313 | |
| 1314 | void SkCanvas::drawBitmapMatrix(const SkBitmap& bitmap, const SkMatrix& matrix, |
| 1315 | const SkPaint* paint) { |
| 1316 | SkDEBUGCODE(bitmap.validate();) |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1317 | this->internalDrawBitmap(bitmap, NULL, matrix, paint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1318 | } |
| 1319 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1320 | void SkCanvas::commonDrawBitmap(const SkBitmap& bitmap, const SkIRect* srcRect, |
| 1321 | const SkMatrix& matrix, const SkPaint& paint) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1322 | SkDEBUGCODE(bitmap.validate();) |
reed@android.com | 9b03906 | 2009-02-11 15:09:58 +0000 | [diff] [blame] | 1323 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1324 | ITER_BEGIN(paint, SkDrawFilter::kBitmap_Type) |
reed@android.com | 9b03906 | 2009-02-11 15:09:58 +0000 | [diff] [blame] | 1325 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1326 | while (iter.next()) { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 1327 | iter.fDevice->drawBitmap(iter, bitmap, srcRect, matrix, paint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1328 | } |
reed@android.com | 9b03906 | 2009-02-11 15:09:58 +0000 | [diff] [blame] | 1329 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1330 | ITER_END |
| 1331 | } |
| 1332 | |
| 1333 | void SkCanvas::drawSprite(const SkBitmap& bitmap, int x, int y, |
| 1334 | const SkPaint* paint) { |
| 1335 | SkDEBUGCODE(bitmap.validate();) |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1336 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1337 | if (reject_bitmap(bitmap)) { |
| 1338 | return; |
| 1339 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1340 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1341 | SkPaint tmp; |
| 1342 | if (NULL == paint) { |
| 1343 | paint = &tmp; |
| 1344 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1345 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1346 | ITER_BEGIN(*paint, SkDrawFilter::kBitmap_Type) |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1347 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1348 | while (iter.next()) { |
| 1349 | iter.fDevice->drawSprite(iter, bitmap, x - iter.getX(), y - iter.getY(), |
| 1350 | *paint); |
| 1351 | } |
| 1352 | ITER_END |
| 1353 | } |
| 1354 | |
| 1355 | void SkCanvas::drawText(const void* text, size_t byteLength, |
| 1356 | SkScalar x, SkScalar y, const SkPaint& paint) { |
| 1357 | ITER_BEGIN(paint, SkDrawFilter::kText_Type) |
| 1358 | |
| 1359 | while (iter.next()) { |
| 1360 | iter.fDevice->drawText(iter, text, byteLength, x, y, paint); |
| 1361 | } |
| 1362 | |
| 1363 | ITER_END |
| 1364 | } |
| 1365 | |
| 1366 | void SkCanvas::drawPosText(const void* text, size_t byteLength, |
| 1367 | const SkPoint pos[], const SkPaint& paint) { |
| 1368 | ITER_BEGIN(paint, SkDrawFilter::kText_Type) |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1369 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1370 | while (iter.next()) { |
| 1371 | iter.fDevice->drawPosText(iter, text, byteLength, &pos->fX, 0, 2, |
| 1372 | paint); |
| 1373 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1374 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1375 | ITER_END |
| 1376 | } |
| 1377 | |
| 1378 | void SkCanvas::drawPosTextH(const void* text, size_t byteLength, |
| 1379 | const SkScalar xpos[], SkScalar constY, |
| 1380 | const SkPaint& paint) { |
| 1381 | ITER_BEGIN(paint, SkDrawFilter::kText_Type) |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1382 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1383 | while (iter.next()) { |
| 1384 | iter.fDevice->drawPosText(iter, text, byteLength, xpos, constY, 1, |
| 1385 | paint); |
| 1386 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1387 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1388 | ITER_END |
| 1389 | } |
| 1390 | |
| 1391 | void SkCanvas::drawTextOnPath(const void* text, size_t byteLength, |
| 1392 | const SkPath& path, const SkMatrix* matrix, |
| 1393 | const SkPaint& paint) { |
| 1394 | ITER_BEGIN(paint, SkDrawFilter::kText_Type) |
| 1395 | |
| 1396 | while (iter.next()) { |
| 1397 | iter.fDevice->drawTextOnPath(iter, text, byteLength, path, |
| 1398 | matrix, paint); |
| 1399 | } |
| 1400 | |
| 1401 | ITER_END |
| 1402 | } |
| 1403 | |
| 1404 | void SkCanvas::drawVertices(VertexMode vmode, int vertexCount, |
| 1405 | const SkPoint verts[], const SkPoint texs[], |
| 1406 | const SkColor colors[], SkXfermode* xmode, |
| 1407 | const uint16_t indices[], int indexCount, |
| 1408 | const SkPaint& paint) { |
| 1409 | ITER_BEGIN(paint, SkDrawFilter::kPath_Type) |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1410 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1411 | while (iter.next()) { |
| 1412 | iter.fDevice->drawVertices(iter, vmode, vertexCount, verts, texs, |
| 1413 | colors, xmode, indices, indexCount, paint); |
| 1414 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1415 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1416 | ITER_END |
| 1417 | } |
| 1418 | |
reed@android.com | cb60844 | 2009-12-04 21:32:27 +0000 | [diff] [blame] | 1419 | void SkCanvas::drawData(const void* data, size_t length) { |
| 1420 | // do nothing. Subclasses may do something with the data |
| 1421 | } |
| 1422 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1423 | ////////////////////////////////////////////////////////////////////////////// |
| 1424 | // These methods are NOT virtual, and therefore must call back into virtual |
| 1425 | // methods, rather than actually drawing themselves. |
| 1426 | ////////////////////////////////////////////////////////////////////////////// |
| 1427 | |
| 1428 | void SkCanvas::drawARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b, |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 1429 | SkXfermode::Mode mode) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1430 | SkPaint paint; |
| 1431 | |
| 1432 | paint.setARGB(a, r, g, b); |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 1433 | if (SkXfermode::kSrcOver_Mode != mode) { |
reed@android.com | 0baf193 | 2009-06-24 12:41:42 +0000 | [diff] [blame] | 1434 | paint.setXfermodeMode(mode); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1435 | } |
| 1436 | this->drawPaint(paint); |
| 1437 | } |
| 1438 | |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 1439 | void SkCanvas::drawColor(SkColor c, SkXfermode::Mode mode) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1440 | SkPaint paint; |
| 1441 | |
| 1442 | paint.setColor(c); |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 1443 | if (SkXfermode::kSrcOver_Mode != mode) { |
reed@android.com | 0baf193 | 2009-06-24 12:41:42 +0000 | [diff] [blame] | 1444 | paint.setXfermodeMode(mode); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1445 | } |
| 1446 | this->drawPaint(paint); |
| 1447 | } |
| 1448 | |
| 1449 | void SkCanvas::drawPoint(SkScalar x, SkScalar y, const SkPaint& paint) { |
| 1450 | SkPoint pt; |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1451 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1452 | pt.set(x, y); |
| 1453 | this->drawPoints(kPoints_PointMode, 1, &pt, paint); |
| 1454 | } |
| 1455 | |
| 1456 | void SkCanvas::drawPoint(SkScalar x, SkScalar y, SkColor color) { |
| 1457 | SkPoint pt; |
| 1458 | SkPaint paint; |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1459 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1460 | pt.set(x, y); |
| 1461 | paint.setColor(color); |
| 1462 | this->drawPoints(kPoints_PointMode, 1, &pt, paint); |
| 1463 | } |
| 1464 | |
| 1465 | void SkCanvas::drawLine(SkScalar x0, SkScalar y0, SkScalar x1, SkScalar y1, |
| 1466 | const SkPaint& paint) { |
| 1467 | SkPoint pts[2]; |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1468 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1469 | pts[0].set(x0, y0); |
| 1470 | pts[1].set(x1, y1); |
| 1471 | this->drawPoints(kLines_PointMode, 2, pts, paint); |
| 1472 | } |
| 1473 | |
| 1474 | void SkCanvas::drawRectCoords(SkScalar left, SkScalar top, |
| 1475 | SkScalar right, SkScalar bottom, |
| 1476 | const SkPaint& paint) { |
| 1477 | SkRect r; |
| 1478 | |
| 1479 | r.set(left, top, right, bottom); |
| 1480 | this->drawRect(r, paint); |
| 1481 | } |
| 1482 | |
| 1483 | void SkCanvas::drawCircle(SkScalar cx, SkScalar cy, SkScalar radius, |
| 1484 | const SkPaint& paint) { |
| 1485 | if (radius < 0) { |
| 1486 | radius = 0; |
| 1487 | } |
| 1488 | |
| 1489 | SkRect r; |
| 1490 | r.set(cx - radius, cy - radius, cx + radius, cy + radius); |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1491 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1492 | if (paint.canComputeFastBounds()) { |
| 1493 | SkRect storage; |
| 1494 | if (this->quickReject(paint.computeFastBounds(r, &storage), |
| 1495 | paint2EdgeType(&paint))) { |
| 1496 | return; |
| 1497 | } |
| 1498 | } |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1499 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1500 | SkPath path; |
| 1501 | path.addOval(r); |
| 1502 | this->drawPath(path, paint); |
| 1503 | } |
| 1504 | |
| 1505 | void SkCanvas::drawRoundRect(const SkRect& r, SkScalar rx, SkScalar ry, |
| 1506 | const SkPaint& paint) { |
| 1507 | if (rx > 0 && ry > 0) { |
| 1508 | if (paint.canComputeFastBounds()) { |
| 1509 | SkRect storage; |
| 1510 | if (this->quickReject(paint.computeFastBounds(r, &storage), |
| 1511 | paint2EdgeType(&paint))) { |
| 1512 | return; |
| 1513 | } |
| 1514 | } |
| 1515 | |
| 1516 | SkPath path; |
| 1517 | path.addRoundRect(r, rx, ry, SkPath::kCW_Direction); |
| 1518 | this->drawPath(path, paint); |
| 1519 | } else { |
| 1520 | this->drawRect(r, paint); |
| 1521 | } |
| 1522 | } |
| 1523 | |
| 1524 | void SkCanvas::drawOval(const SkRect& oval, const SkPaint& paint) { |
| 1525 | if (paint.canComputeFastBounds()) { |
| 1526 | SkRect storage; |
| 1527 | if (this->quickReject(paint.computeFastBounds(oval, &storage), |
| 1528 | paint2EdgeType(&paint))) { |
| 1529 | return; |
| 1530 | } |
| 1531 | } |
| 1532 | |
| 1533 | SkPath path; |
| 1534 | path.addOval(oval); |
| 1535 | this->drawPath(path, paint); |
| 1536 | } |
| 1537 | |
| 1538 | void SkCanvas::drawArc(const SkRect& oval, SkScalar startAngle, |
| 1539 | SkScalar sweepAngle, bool useCenter, |
| 1540 | const SkPaint& paint) { |
| 1541 | if (SkScalarAbs(sweepAngle) >= SkIntToScalar(360)) { |
| 1542 | this->drawOval(oval, paint); |
| 1543 | } else { |
| 1544 | SkPath path; |
| 1545 | if (useCenter) { |
| 1546 | path.moveTo(oval.centerX(), oval.centerY()); |
| 1547 | } |
| 1548 | path.arcTo(oval, startAngle, sweepAngle, !useCenter); |
| 1549 | if (useCenter) { |
| 1550 | path.close(); |
| 1551 | } |
| 1552 | this->drawPath(path, paint); |
| 1553 | } |
| 1554 | } |
| 1555 | |
| 1556 | void SkCanvas::drawTextOnPathHV(const void* text, size_t byteLength, |
| 1557 | const SkPath& path, SkScalar hOffset, |
| 1558 | SkScalar vOffset, const SkPaint& paint) { |
| 1559 | SkMatrix matrix; |
reed@google.com | 4b22602 | 2011-01-11 18:32:13 +0000 | [diff] [blame] | 1560 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1561 | matrix.setTranslate(hOffset, vOffset); |
| 1562 | this->drawTextOnPath(text, byteLength, path, &matrix, paint); |
| 1563 | } |
| 1564 | |
reed@android.com | f76bacf | 2009-05-13 14:00:33 +0000 | [diff] [blame] | 1565 | /////////////////////////////////////////////////////////////////////////////// |
| 1566 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1567 | void SkCanvas::drawPicture(SkPicture& picture) { |
| 1568 | int saveCount = save(); |
| 1569 | picture.draw(this); |
| 1570 | restoreToCount(saveCount); |
| 1571 | } |
| 1572 | |
reed@android.com | f76bacf | 2009-05-13 14:00:33 +0000 | [diff] [blame] | 1573 | void SkCanvas::drawShape(SkShape* shape) { |
| 1574 | // shape baseclass takes care of save/restore |
| 1575 | shape->draw(this); |
| 1576 | } |
| 1577 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1578 | /////////////////////////////////////////////////////////////////////////////// |
| 1579 | /////////////////////////////////////////////////////////////////////////////// |
| 1580 | |
| 1581 | SkCanvas::LayerIter::LayerIter(SkCanvas* canvas, bool skipEmptyClips) { |
reed@google.com | d642329 | 2010-12-20 20:53:13 +0000 | [diff] [blame] | 1582 | SK_COMPILE_ASSERT(sizeof(fStorage) >= sizeof(SkDrawIter), fStorage_too_small); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1583 | |
| 1584 | SkASSERT(canvas); |
| 1585 | |
| 1586 | fImpl = new (fStorage) SkDrawIter(canvas, skipEmptyClips); |
| 1587 | fDone = !fImpl->next(); |
| 1588 | } |
| 1589 | |
| 1590 | SkCanvas::LayerIter::~LayerIter() { |
| 1591 | fImpl->~SkDrawIter(); |
| 1592 | } |
| 1593 | |
| 1594 | void SkCanvas::LayerIter::next() { |
| 1595 | fDone = !fImpl->next(); |
| 1596 | } |
| 1597 | |
| 1598 | SkDevice* SkCanvas::LayerIter::device() const { |
| 1599 | return fImpl->getDevice(); |
| 1600 | } |
| 1601 | |
| 1602 | const SkMatrix& SkCanvas::LayerIter::matrix() const { |
| 1603 | return fImpl->getMatrix(); |
| 1604 | } |
| 1605 | |
| 1606 | const SkPaint& SkCanvas::LayerIter::paint() const { |
| 1607 | const SkPaint* paint = fImpl->getPaint(); |
| 1608 | if (NULL == paint) { |
| 1609 | paint = &fDefaultPaint; |
| 1610 | } |
| 1611 | return *paint; |
| 1612 | } |
| 1613 | |
| 1614 | const SkRegion& SkCanvas::LayerIter::clip() const { return fImpl->getClip(); } |
| 1615 | int SkCanvas::LayerIter::x() const { return fImpl->getX(); } |
| 1616 | int SkCanvas::LayerIter::y() const { return fImpl->getY(); } |
| 1617 | |