| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkBuffer.h" |
| #include "SkPath.h" |
| #include "SkPathRef.h" |
| |
| SK_DEFINE_INST_COUNT(SkPathRef); |
| |
| SkPoint* SkPathRef::Editor::growForVerb(int /*SkPath::Verb*/ verb) { |
| fPathRef->validate(); |
| return fPathRef->growForVerb(verb); |
| } |
| |
| SkPoint* SkPathRef::Editor::growForConic(SkScalar w) { |
| fPathRef->validate(); |
| SkPoint* pts = fPathRef->growForVerb(SkPath::kConic_Verb); |
| *fPathRef->fConicWeights.append() = w; |
| return pts; |
| } |
| |
| SkPoint* SkPathRef::growForVerb(int /* SkPath::Verb*/ verb) { |
| this->validate(); |
| int pCnt; |
| switch (verb) { |
| case SkPath::kMove_Verb: |
| pCnt = 1; |
| break; |
| case SkPath::kLine_Verb: |
| pCnt = 1; |
| break; |
| case SkPath::kQuad_Verb: |
| // fall through |
| case SkPath::kConic_Verb: |
| pCnt = 2; |
| break; |
| case SkPath::kCubic_Verb: |
| pCnt = 3; |
| break; |
| case SkPath::kClose_Verb: |
| pCnt = 0; |
| break; |
| case SkPath::kDone_Verb: |
| SkDEBUGFAIL("growForVerb called for kDone"); |
| // fall through |
| default: |
| SkDEBUGFAIL("default is not reached"); |
| pCnt = 0; |
| } |
| size_t space = sizeof(uint8_t) + pCnt * sizeof (SkPoint); |
| this->makeSpace(space); |
| this->fVerbs[~fVerbCnt] = verb; |
| SkPoint* ret = fPoints + fPointCnt; |
| fVerbCnt += 1; |
| fPointCnt += pCnt; |
| fFreeSpace -= space; |
| fBoundsIsDirty = true; // this also invalidates fIsFinite |
| this->validate(); |
| return ret; |
| } |
| |
| SkPathRef* SkPathRef::CreateFromBuffer(SkRBuffer* buffer |
| #ifndef DELETE_THIS_CODE_WHEN_SKPS_ARE_REBUILT_AT_V14_AND_ALL_OTHER_INSTANCES_TOO |
| , bool newFormat, int32_t oldPacked |
| #endif |
| ) { |
| SkPathRef* ref = SkNEW(SkPathRef); |
| #ifndef DELETE_THIS_CODE_WHEN_SKPS_ARE_REBUILT_AT_V14_AND_ALL_OTHER_INSTANCES_TOO |
| if (newFormat) { |
| #endif |
| int32_t packed = buffer->readU32(); |
| |
| ref->fIsFinite = (packed >> kIsFinite_SerializationShift) & 1; |
| #ifndef DELETE_THIS_CODE_WHEN_SKPS_ARE_REBUILT_AT_V14_AND_ALL_OTHER_INSTANCES_TOO |
| } else { |
| ref->fIsFinite = (oldPacked >> SkPath::kOldIsFinite_SerializationShift) & 1; |
| } |
| #endif |
| |
| ref->fGenerationID = buffer->readU32(); |
| int32_t verbCount = buffer->readS32(); |
| int32_t pointCount = buffer->readS32(); |
| int32_t conicCount = buffer->readS32(); |
| ref->resetToSize(verbCount, pointCount, conicCount); |
| |
| SkASSERT(verbCount == ref->countVerbs()); |
| SkASSERT(pointCount == ref->countPoints()); |
| SkASSERT(conicCount == ref->fConicWeights.count()); |
| buffer->read(ref->verbsMemWritable(), verbCount * sizeof(uint8_t)); |
| buffer->read(ref->fPoints, pointCount * sizeof(SkPoint)); |
| buffer->read(ref->fConicWeights.begin(), conicCount * sizeof(SkScalar)); |
| buffer->read(&ref->fBounds, sizeof(SkRect)); |
| ref->fBoundsIsDirty = false; |
| return ref; |
| } |
| |
| /** |
| * Writes the path points and verbs to a buffer. |
| */ |
| void SkPathRef::writeToBuffer(SkWBuffer* buffer) { |
| this->validate(); |
| SkDEBUGCODE(size_t beforePos = buffer->pos();) |
| |
| // Call getBounds() to ensure (as a side-effect) that fBounds |
| // and fIsFinite are computed. |
| const SkRect& bounds = this->getBounds(); |
| |
| int32_t packed = ((fIsFinite & 1) << kIsFinite_SerializationShift); |
| buffer->write32(packed); |
| |
| // TODO: write gen ID here. Problem: We don't know if we're cross process or not from |
| // SkWBuffer. Until this is fixed we write 0. |
| buffer->write32(0); |
| buffer->write32(fVerbCnt); |
| buffer->write32(fPointCnt); |
| buffer->write32(fConicWeights.count()); |
| buffer->write(verbsMemBegin(), fVerbCnt * sizeof(uint8_t)); |
| buffer->write(fPoints, fPointCnt * sizeof(SkPoint)); |
| buffer->write(fConicWeights.begin(), fConicWeights.bytes()); |
| buffer->write(&bounds, sizeof(bounds)); |
| |
| SkASSERT(buffer->pos() - beforePos == (size_t) this->writeSize()); |
| } |