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| 1 /* | |
| 2 * Copyright 2014 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #ifndef SkRecords_DEFINED | |
| 9 #define SkRecords_DEFINED | |
| 10 | |
| 11 #include "SkCanvas.h" | |
| 12 #include "SkDrawable.h" | |
| 13 #include "SkPathPriv.h" | |
| 14 #include "SkPicture.h" | |
| 15 #include "SkRSXform.h" | |
| 16 #include "SkTextBlob.h" | |
| 17 | |
| 18 namespace SkRecords { | |
| 19 | |
| 20 // A list of all the types of canvas calls we can record. | |
| 21 // Each of these is reified into a struct below. | |
| 22 // | |
| 23 // (We're using the macro-of-macro trick here to do several different things wit
h the same list.) | |
| 24 // | |
| 25 // We leave this SK_RECORD_TYPES macro defined for use by code that wants to ope
rate on SkRecords | |
| 26 // types polymorphically. (See SkRecord::Record::{visit,mutate} for an example.
) | |
| 27 // | |
| 28 // Order doesn't technically matter here, but the compiler can generally generat
e better code if | |
| 29 // you keep them semantically grouped, especially the Draws. It's also nice to
leave NoOp at 0. | |
| 30 #define SK_RECORD_TYPES(M) \ | |
| 31 M(NoOp) \ | |
| 32 M(Restore) \ | |
| 33 M(Save) \ | |
| 34 M(SaveLayer) \ | |
| 35 M(SetMatrix) \ | |
| 36 M(ClipPath) \ | |
| 37 M(ClipRRect) \ | |
| 38 M(ClipRect) \ | |
| 39 M(ClipRegion) \ | |
| 40 M(DrawBitmap) \ | |
| 41 M(DrawBitmapNine) \ | |
| 42 M(DrawBitmapRectToRect) \ | |
| 43 M(DrawBitmapRectToRectBleed) \ | |
| 44 M(DrawDrawable) \ | |
| 45 M(DrawImage) \ | |
| 46 M(DrawImageRect) \ | |
| 47 M(DrawImageNine) \ | |
| 48 M(DrawDRRect) \ | |
| 49 M(DrawOval) \ | |
| 50 M(DrawPaint) \ | |
| 51 M(DrawPath) \ | |
| 52 M(DrawPatch) \ | |
| 53 M(DrawPicture) \ | |
| 54 M(DrawPoints) \ | |
| 55 M(DrawPosText) \ | |
| 56 M(DrawPosTextH) \ | |
| 57 M(DrawText) \ | |
| 58 M(DrawTextOnPath) \ | |
| 59 M(DrawRRect) \ | |
| 60 M(DrawRect) \ | |
| 61 M(DrawSprite) \ | |
| 62 M(DrawTextBlob) \ | |
| 63 M(DrawAtlas) \ | |
| 64 M(DrawVertices) | |
| 65 | |
| 66 // Defines SkRecords::Type, an enum of all record types. | |
| 67 #define ENUM(T) T##_Type, | |
| 68 enum Type { SK_RECORD_TYPES(ENUM) }; | |
| 69 #undef ENUM | |
| 70 | |
| 71 // Macros to make it easier to define a record for a draw call with 0 args, 1 ar
gs, 2 args, etc. | |
| 72 // These should be clearer when you look at their use below. | |
| 73 #define RECORD0(T) \ | |
| 74 struct T { \ | |
| 75 static const Type kType = T##_Type; \ | |
| 76 }; | |
| 77 | |
| 78 // Instead of requring the exact type A here, we take any type Z which implicitl
y casts to A. | |
| 79 // This lets our wrappers like ImmutableBitmap work seamlessly. | |
| 80 | |
| 81 #define RECORD1(T, A, a) \ | |
| 82 struct T { \ | |
| 83 static const Type kType = T##_Type; \ | |
| 84 T() {} \ | |
| 85 template <typename Z> \ | |
| 86 T(const Z& a) : a(a) {} \ | |
| 87 A a; \ | |
| 88 }; | |
| 89 | |
| 90 #define RECORD2(T, A, a, B, b) \ | |
| 91 struct T { \ | |
| 92 static const Type kType = T##_Type; \ | |
| 93 T() {} \ | |
| 94 template <typename Z, typename Y> \ | |
| 95 T(const Z& a, const Y& b) : a(a), b(b) {} \ | |
| 96 A a; B b; \ | |
| 97 }; | |
| 98 | |
| 99 #define RECORD3(T, A, a, B, b, C, c) \ | |
| 100 struct T { \ | |
| 101 static const Type kType = T##_Type; \ | |
| 102 T() {} \ | |
| 103 template <typename Z, typename Y, typename X> \ | |
| 104 T(const Z& a, const Y& b, const X& c) : a(a), b(b), c(c) {} \ | |
| 105 A a; B b; C c; \ | |
| 106 }; | |
| 107 | |
| 108 #define RECORD4(T, A, a, B, b, C, c, D, d)
\ | |
| 109 struct T {
\ | |
| 110 static const Type kType = T##_Type;
\ | |
| 111 T() {}
\ | |
| 112 template <typename Z, typename Y, typename X, typename W>
\ | |
| 113 T(const Z& a, const Y& b, const X& c, const W& d) : a(a), b(b), c(c), d(d) {
} \ | |
| 114 A a; B b; C c; D d;
\ | |
| 115 }; | |
| 116 | |
| 117 #define RECORD5(T, A, a, B, b, C, c, D, d, E, e) \ | |
| 118 struct T { \ | |
| 119 static const Type kType = T##_Type; \ | |
| 120 T() {} \ | |
| 121 template <typename Z, typename Y, typename X, typename W, typename V> \ | |
| 122 T(const Z& a, const Y& b, const X& c, const W& d, const V& e) \ | |
| 123 : a(a), b(b), c(c), d(d), e(e) {} \ | |
| 124 A a; B b; C c; D d; E e; \ | |
| 125 }; | |
| 126 | |
| 127 #define RECORD8(T, A, a, B, b, C, c, D, d, E, e, F, f, G, g, H, h) \ | |
| 128 struct T { \ | |
| 129 static const Type kType = T##_Type; \ | |
| 130 T() {} \ | |
| 131 template <typename Z, typename Y, typename X, typename W, \ | |
| 132 typename V, typename U, typename S, typename R> \ | |
| 133 T(const Z& a, const Y& b, const X& c, const W& d, \ | |
| 134 const V& e, const U& f, const S& g, const R& h) \ | |
| 135 : a(a), b(b), c(c), d(d), e(e), f(f), g(g), h(h) {} \ | |
| 136 A a; B b; C c; D d; E e; F f; G g; H h; \ | |
| 137 }; | |
| 138 | |
| 139 #define ACT_AS_PTR(ptr) \ | |
| 140 operator T*() const { return ptr; } \ | |
| 141 T* operator->() const { return ptr; } | |
| 142 | |
| 143 template <typename T> | |
| 144 class RefBox : SkNoncopyable { | |
| 145 public: | |
| 146 RefBox() {} | |
| 147 RefBox(T* obj) : fObj(SkSafeRef(obj)) {} | |
| 148 ~RefBox() { SkSafeUnref(fObj); } | |
| 149 | |
| 150 ACT_AS_PTR(fObj); | |
| 151 | |
| 152 private: | |
| 153 T* fObj; | |
| 154 }; | |
| 155 | |
| 156 // An Optional doesn't own the pointer's memory, but may need to destroy non-POD
data. | |
| 157 template <typename T> | |
| 158 class Optional : SkNoncopyable { | |
| 159 public: | |
| 160 Optional() : fPtr(nullptr) {} | |
| 161 Optional(T* ptr) : fPtr(ptr) {} | |
| 162 ~Optional() { if (fPtr) fPtr->~T(); } | |
| 163 | |
| 164 ACT_AS_PTR(fPtr); | |
| 165 private: | |
| 166 T* fPtr; | |
| 167 }; | |
| 168 | |
| 169 // Like Optional, but ptr must not be NULL. | |
| 170 template <typename T> | |
| 171 class Adopted : SkNoncopyable { | |
| 172 public: | |
| 173 Adopted(T* ptr) : fPtr(ptr) { SkASSERT(fPtr); } | |
| 174 Adopted(Adopted* source) { | |
| 175 // Transfer ownership from source to this. | |
| 176 fPtr = source->fPtr; | |
| 177 source->fPtr = NULL; | |
| 178 } | |
| 179 ~Adopted() { if (fPtr) fPtr->~T(); } | |
| 180 | |
| 181 ACT_AS_PTR(fPtr); | |
| 182 private: | |
| 183 T* fPtr; | |
| 184 }; | |
| 185 | |
| 186 // PODArray doesn't own the pointer's memory, and we assume the data is POD. | |
| 187 template <typename T> | |
| 188 class PODArray { | |
| 189 public: | |
| 190 PODArray() {} | |
| 191 PODArray(T* ptr) : fPtr(ptr) {} | |
| 192 // Default copy and assign. | |
| 193 | |
| 194 ACT_AS_PTR(fPtr); | |
| 195 private: | |
| 196 T* fPtr; | |
| 197 }; | |
| 198 | |
| 199 #undef ACT_AS_PTR | |
| 200 | |
| 201 // Like SkBitmap, but deep copies pixels if they're not immutable. | |
| 202 // Using this, we guarantee the immutability of all bitmaps we record. | |
| 203 class ImmutableBitmap : SkNoncopyable { | |
| 204 public: | |
| 205 ImmutableBitmap() {} | |
| 206 explicit ImmutableBitmap(const SkBitmap& bitmap) { | |
| 207 if (bitmap.isImmutable()) { | |
| 208 fBitmap = bitmap; | |
| 209 } else { | |
| 210 bitmap.copyTo(&fBitmap); | |
| 211 } | |
| 212 fBitmap.setImmutable(); | |
| 213 } | |
| 214 | |
| 215 int width() const { return fBitmap.width(); } | |
| 216 int height() const { return fBitmap.height(); } | |
| 217 | |
| 218 // While the pixels are immutable, SkBitmap itself is not thread-safe, so re
turn a copy. | |
| 219 SkBitmap shallowCopy() const { return fBitmap; } | |
| 220 private: | |
| 221 SkBitmap fBitmap; | |
| 222 }; | |
| 223 | |
| 224 // SkPath::getBounds() isn't thread safe unless we precache the bounds in a sing
lethreaded context. | |
| 225 // SkPath::cheapComputeDirection() is similar. | |
| 226 // Recording is a convenient time to cache these, or we can delay it to between
record and playback. | |
| 227 struct PreCachedPath : public SkPath { | |
| 228 PreCachedPath() {} | |
| 229 explicit PreCachedPath(const SkPath& path) : SkPath(path) { | |
| 230 this->updateBoundsCache(); | |
| 231 #if 0 // Disabled to see if we ever really race on this. It costs time, chromi
um:496982. | |
| 232 SkPathPriv::FirstDirection junk; | |
| 233 (void)SkPathPriv::CheapComputeFirstDirection(*this, &junk); | |
| 234 #endif | |
| 235 } | |
| 236 }; | |
| 237 | |
| 238 // Like SkPath::getBounds(), SkMatrix::getType() isn't thread safe unless we pre
cache it. | |
| 239 // This may not cover all SkMatrices used by the picture (e.g. some could be hid
ing in a shader). | |
| 240 struct TypedMatrix : public SkMatrix { | |
| 241 TypedMatrix() {} | |
| 242 explicit TypedMatrix(const SkMatrix& matrix) : SkMatrix(matrix) { | |
| 243 (void)this->getType(); | |
| 244 } | |
| 245 }; | |
| 246 | |
| 247 RECORD0(NoOp); | |
| 248 | |
| 249 RECORD2(Restore, SkIRect, devBounds, TypedMatrix, matrix); | |
| 250 RECORD0(Save); | |
| 251 RECORD3(SaveLayer, Optional<SkRect>, bounds, Optional<SkPaint>, paint, SkCanvas:
:SaveFlags, flags); | |
| 252 | |
| 253 RECORD1(SetMatrix, TypedMatrix, matrix); | |
| 254 | |
| 255 struct RegionOpAndAA { | |
| 256 RegionOpAndAA() {} | |
| 257 RegionOpAndAA(SkRegion::Op op, bool aa) : op(op), aa(aa) {} | |
| 258 SkRegion::Op op : 31; // This really only needs to be 3, but there's no win
today to do so. | |
| 259 unsigned aa : 1; // MSVC won't pack an enum with an bool, so we call t
his an unsigned. | |
| 260 }; | |
| 261 SK_COMPILE_ASSERT(sizeof(RegionOpAndAA) == 4, RegionOpAndAASize); | |
| 262 | |
| 263 RECORD3(ClipPath, SkIRect, devBounds, PreCachedPath, path, RegionOpAndAA, opA
A); | |
| 264 RECORD3(ClipRRect, SkIRect, devBounds, SkRRect, rrect, RegionOpAndAA, opA
A); | |
| 265 RECORD3(ClipRect, SkIRect, devBounds, SkRect, rect, RegionOpAndAA, opA
A); | |
| 266 RECORD3(ClipRegion, SkIRect, devBounds, SkRegion, region, SkRegion::Op, o
p); | |
| 267 | |
| 268 // While not strictly required, if you have an SkPaint, it's fastest to put it f
irst. | |
| 269 RECORD4(DrawBitmap, Optional<SkPaint>, paint, | |
| 270 ImmutableBitmap, bitmap, | |
| 271 SkScalar, left, | |
| 272 SkScalar, top); | |
| 273 RECORD4(DrawBitmapNine, Optional<SkPaint>, paint, | |
| 274 ImmutableBitmap, bitmap, | |
| 275 SkIRect, center, | |
| 276 SkRect, dst); | |
| 277 RECORD4(DrawBitmapRectToRect, Optional<SkPaint>, paint, | |
| 278 ImmutableBitmap, bitmap, | |
| 279 Optional<SkRect>, src, | |
| 280 SkRect, dst); | |
| 281 RECORD4(DrawBitmapRectToRectBleed, Optional<SkPaint>, paint, | |
| 282 ImmutableBitmap, bitmap, | |
| 283 Optional<SkRect>, src, | |
| 284 SkRect, dst); | |
| 285 RECORD3(DrawDRRect, SkPaint, paint, SkRRect, outer, SkRRect, inner); | |
| 286 RECORD2(DrawDrawable, SkRect, worstCaseBounds, int32_t, index); | |
| 287 RECORD4(DrawImage, Optional<SkPaint>, paint, | |
| 288 RefBox<const SkImage>, image, | |
| 289 SkScalar, left, | |
| 290 SkScalar, top); | |
| 291 RECORD4(DrawImageRect, Optional<SkPaint>, paint, | |
| 292 RefBox<const SkImage>, image, | |
| 293 Optional<SkRect>, src, | |
| 294 SkRect, dst); | |
| 295 RECORD4(DrawImageNine, Optional<SkPaint>, paint, | |
| 296 RefBox<const SkImage>, image, | |
| 297 SkIRect, center, | |
| 298 SkRect, dst); | |
| 299 RECORD2(DrawOval, SkPaint, paint, SkRect, oval); | |
| 300 RECORD1(DrawPaint, SkPaint, paint); | |
| 301 RECORD2(DrawPath, SkPaint, paint, PreCachedPath, path); | |
| 302 RECORD3(DrawPicture, Optional<SkPaint>, paint, | |
| 303 RefBox<const SkPicture>, picture, | |
| 304 TypedMatrix, matrix); | |
| 305 RECORD4(DrawPoints, SkPaint, paint, SkCanvas::PointMode, mode, unsigned, count,
SkPoint*, pts); | |
| 306 RECORD4(DrawPosText, SkPaint, paint, | |
| 307 PODArray<char>, text, | |
| 308 size_t, byteLength, | |
| 309 PODArray<SkPoint>, pos); | |
| 310 RECORD5(DrawPosTextH, SkPaint, paint, | |
| 311 PODArray<char>, text, | |
| 312 unsigned, byteLength, | |
| 313 SkScalar, y, | |
| 314 PODArray<SkScalar>, xpos); | |
| 315 RECORD2(DrawRRect, SkPaint, paint, SkRRect, rrect); | |
| 316 RECORD2(DrawRect, SkPaint, paint, SkRect, rect); | |
| 317 RECORD4(DrawSprite, Optional<SkPaint>, paint, ImmutableBitmap, bitmap, int, left
, int, top); | |
| 318 RECORD5(DrawText, SkPaint, paint, | |
| 319 PODArray<char>, text, | |
| 320 size_t, byteLength, | |
| 321 SkScalar, x, | |
| 322 SkScalar, y); | |
| 323 RECORD4(DrawTextBlob, SkPaint, paint, | |
| 324 RefBox<const SkTextBlob>, blob, | |
| 325 SkScalar, x, | |
| 326 SkScalar, y); | |
| 327 RECORD5(DrawTextOnPath, SkPaint, paint, | |
| 328 PODArray<char>, text, | |
| 329 size_t, byteLength, | |
| 330 PreCachedPath, path, | |
| 331 TypedMatrix, matrix); | |
| 332 | |
| 333 RECORD5(DrawPatch, SkPaint, paint, | |
| 334 PODArray<SkPoint>, cubics, | |
| 335 PODArray<SkColor>, colors, | |
| 336 PODArray<SkPoint>, texCoords, | |
| 337 RefBox<SkXfermode>, xmode); | |
| 338 | |
| 339 RECORD8(DrawAtlas, Optional<SkPaint>, paint, | |
| 340 RefBox<const SkImage>, atlas, | |
| 341 PODArray<SkRSXform>, xforms, | |
| 342 PODArray<SkRect>, texs, | |
| 343 PODArray<SkColor>, colors, | |
| 344 int, count, | |
| 345 SkXfermode::Mode, mode, | |
| 346 Optional<SkRect>, cull); | |
| 347 | |
| 348 // This guy is so ugly we just write it manually. | |
| 349 struct DrawVertices { | |
| 350 static const Type kType = DrawVertices_Type; | |
| 351 | |
| 352 DrawVertices(const SkPaint& paint, | |
| 353 SkCanvas::VertexMode vmode, | |
| 354 int vertexCount, | |
| 355 SkPoint* vertices, | |
| 356 SkPoint* texs, | |
| 357 SkColor* colors, | |
| 358 SkXfermode* xmode, | |
| 359 uint16_t* indices, | |
| 360 int indexCount) | |
| 361 : paint(paint) | |
| 362 , vmode(vmode) | |
| 363 , vertexCount(vertexCount) | |
| 364 , vertices(vertices) | |
| 365 , texs(texs) | |
| 366 , colors(colors) | |
| 367 , xmode(SkSafeRef(xmode)) | |
| 368 , indices(indices) | |
| 369 , indexCount(indexCount) {} | |
| 370 | |
| 371 SkPaint paint; | |
| 372 SkCanvas::VertexMode vmode; | |
| 373 int vertexCount; | |
| 374 PODArray<SkPoint> vertices; | |
| 375 PODArray<SkPoint> texs; | |
| 376 PODArray<SkColor> colors; | |
| 377 SkAutoTUnref<SkXfermode> xmode; | |
| 378 PODArray<uint16_t> indices; | |
| 379 int indexCount; | |
| 380 }; | |
| 381 | |
| 382 #undef RECORD0 | |
| 383 #undef RECORD1 | |
| 384 #undef RECORD2 | |
| 385 #undef RECORD3 | |
| 386 #undef RECORD4 | |
| 387 #undef RECORD5 | |
| 388 #undef RECORD8 | |
| 389 | |
| 390 } // namespace SkRecords | |
| 391 | |
| 392 #endif//SkRecords_DEFINED | |
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Chromium Code Reviews
Issue 1217293004:
Move headers used by headers in include/ to include/private. (Closed)
Base URL: https://skia.googlesource.com/skia@master