OLD | NEW |
(Empty) | |
| 1 /* |
| 2 * Copyright 2013 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 #include "SkBuffer.h" |
| 9 #include "SkPath.h" |
| 10 #include "SkPathRef.h" |
| 11 |
| 12 SK_DEFINE_INST_COUNT(SkPathRef); |
| 13 |
| 14 SkPoint* SkPathRef::Editor::growForVerb(int /*SkPath::Verb*/ verb) { |
| 15 fPathRef->validate(); |
| 16 return fPathRef->growForVerb(verb); |
| 17 } |
| 18 |
| 19 SkPoint* SkPathRef::Editor::growForConic(SkScalar w) { |
| 20 fPathRef->validate(); |
| 21 SkPoint* pts = fPathRef->growForVerb(SkPath::kConic_Verb); |
| 22 *fPathRef->fConicWeights.append() = w; |
| 23 return pts; |
| 24 } |
| 25 |
| 26 SkPoint* SkPathRef::growForVerb(int /* SkPath::Verb*/ verb) { |
| 27 this->validate(); |
| 28 int pCnt; |
| 29 switch (verb) { |
| 30 case SkPath::kMove_Verb: |
| 31 pCnt = 1; |
| 32 break; |
| 33 case SkPath::kLine_Verb: |
| 34 pCnt = 1; |
| 35 break; |
| 36 case SkPath::kQuad_Verb: |
| 37 // fall through |
| 38 case SkPath::kConic_Verb: |
| 39 pCnt = 2; |
| 40 break; |
| 41 case SkPath::kCubic_Verb: |
| 42 pCnt = 3; |
| 43 break; |
| 44 case SkPath::kClose_Verb: |
| 45 pCnt = 0; |
| 46 break; |
| 47 case SkPath::kDone_Verb: |
| 48 SkDEBUGFAIL("growForVerb called for kDone"); |
| 49 // fall through |
| 50 default: |
| 51 SkDEBUGFAIL("default is not reached"); |
| 52 pCnt = 0; |
| 53 } |
| 54 size_t space = sizeof(uint8_t) + pCnt * sizeof (SkPoint); |
| 55 this->makeSpace(space); |
| 56 this->fVerbs[~fVerbCnt] = verb; |
| 57 SkPoint* ret = fPoints + fPointCnt; |
| 58 fVerbCnt += 1; |
| 59 fPointCnt += pCnt; |
| 60 fFreeSpace -= space; |
| 61 fBoundsIsDirty = true; // this also invalidates fIsFinite |
| 62 this->validate(); |
| 63 return ret; |
| 64 } |
| 65 |
| 66 SkPathRef* SkPathRef::CreateFromBuffer(SkRBuffer* buffer |
| 67 #ifndef DELETE_THIS_CODE_WHEN_SKPS_ARE_REBUILT_AT_V14_AND_ALL_OTHER_INSTANCES_TO
O |
| 68 , bool newFormat, int32_t oldPacked |
| 69 #endif |
| 70 ) { |
| 71 SkPathRef* ref = SkNEW(SkPathRef); |
| 72 #ifndef DELETE_THIS_CODE_WHEN_SKPS_ARE_REBUILT_AT_V14_AND_ALL_OTHER_INSTANCES_TO
O |
| 73 if (newFormat) { |
| 74 #endif |
| 75 int32_t packed = buffer->readU32(); |
| 76 |
| 77 ref->fIsFinite = (packed >> kIsFinite_SerializationShift) & 1; |
| 78 #ifndef DELETE_THIS_CODE_WHEN_SKPS_ARE_REBUILT_AT_V14_AND_ALL_OTHER_INSTANCES_TO
O |
| 79 } else { |
| 80 ref->fIsFinite = (oldPacked >> SkPath::kOldIsFinite_SerializationShift)
& 1; |
| 81 } |
| 82 #endif |
| 83 |
| 84 ref->fGenerationID = buffer->readU32(); |
| 85 int32_t verbCount = buffer->readS32(); |
| 86 int32_t pointCount = buffer->readS32(); |
| 87 int32_t conicCount = buffer->readS32(); |
| 88 ref->resetToSize(verbCount, pointCount, conicCount); |
| 89 |
| 90 SkASSERT(verbCount == ref->countVerbs()); |
| 91 SkASSERT(pointCount == ref->countPoints()); |
| 92 SkASSERT(conicCount == ref->fConicWeights.count()); |
| 93 buffer->read(ref->verbsMemWritable(), verbCount * sizeof(uint8_t)); |
| 94 buffer->read(ref->fPoints, pointCount * sizeof(SkPoint)); |
| 95 buffer->read(ref->fConicWeights.begin(), conicCount * sizeof(SkScalar)); |
| 96 buffer->read(&ref->fBounds, sizeof(SkRect)); |
| 97 ref->fBoundsIsDirty = false; |
| 98 return ref; |
| 99 } |
| 100 |
| 101 /** |
| 102 * Writes the path points and verbs to a buffer. |
| 103 */ |
| 104 void SkPathRef::writeToBuffer(SkWBuffer* buffer) { |
| 105 this->validate(); |
| 106 SkDEBUGCODE(size_t beforePos = buffer->pos();) |
| 107 |
| 108 // Call getBounds() to ensure (as a side-effect) that fBounds |
| 109 // and fIsFinite are computed. |
| 110 const SkRect& bounds = this->getBounds(); |
| 111 |
| 112 int32_t packed = ((fIsFinite & 1) << kIsFinite_SerializationShift); |
| 113 buffer->write32(packed); |
| 114 |
| 115 // TODO: write gen ID here. Problem: We don't know if we're cross process or
not from |
| 116 // SkWBuffer. Until this is fixed we write 0. |
| 117 buffer->write32(0); |
| 118 buffer->write32(fVerbCnt); |
| 119 buffer->write32(fPointCnt); |
| 120 buffer->write32(fConicWeights.count()); |
| 121 buffer->write(verbsMemBegin(), fVerbCnt * sizeof(uint8_t)); |
| 122 buffer->write(fPoints, fPointCnt * sizeof(SkPoint)); |
| 123 buffer->write(fConicWeights.begin(), fConicWeights.bytes()); |
| 124 buffer->write(&bounds, sizeof(bounds)); |
| 125 |
| 126 SkASSERT(buffer->pos() - beforePos == (size_t) this->writeSize()); |
| 127 } |
OLD | NEW |