| /* |
| Copyright 2011 Google Inc. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| |
| #include "SkCanvas.h" |
| #include "SkPaint.h" |
| #include "SkGPipe.h" |
| #include "SkGPipePriv.h" |
| #include "SkReader32.h" |
| #include "SkStream.h" |
| |
| #include "SkColorFilter.h" |
| #include "SkDrawLooper.h" |
| #include "SkMaskFilter.h" |
| #include "SkPathEffect.h" |
| #include "SkRasterizer.h" |
| #include "SkShader.h" |
| #include "SkTypeface.h" |
| #include "SkXfermode.h" |
| |
| static void set_paintflat(SkPaint* paint, SkFlattenable* obj, unsigned paintFlat) { |
| SkASSERT(paintFlat < kCount_PaintFlats); |
| switch (paintFlat) { |
| case kColorFilter_PaintFlat: |
| paint->setColorFilter((SkColorFilter*)obj); |
| break; |
| case kDrawLooper_PaintFlat: |
| paint->setLooper((SkDrawLooper*)obj); |
| break; |
| case kMaskFilter_PaintFlat: |
| paint->setMaskFilter((SkMaskFilter*)obj); |
| break; |
| case kPathEffect_PaintFlat: |
| paint->setPathEffect((SkPathEffect*)obj); |
| break; |
| case kRasterizer_PaintFlat: |
| paint->setRasterizer((SkRasterizer*)obj); |
| break; |
| case kShader_PaintFlat: |
| paint->setShader((SkShader*)obj); |
| break; |
| case kXfermode_PaintFlat: |
| paint->setXfermode((SkXfermode*)obj); |
| break; |
| default: |
| SkASSERT(!"never gets here"); |
| } |
| } |
| |
| template <typename T> class SkRefCntTDArray : public SkTDArray<T> { |
| public: |
| ~SkRefCntTDArray() { this->unrefAll(); } |
| }; |
| |
| class SkGPipeState { |
| public: |
| SkGPipeState(); |
| ~SkGPipeState(); |
| |
| void setReader(SkFlattenableReadBuffer* reader) { |
| fReader = reader; |
| fReader->setFactoryArray(&fFactoryArray); |
| } |
| |
| const SkPaint& paint() const { return fPaint; } |
| SkPaint* editPaint() { return &fPaint; } |
| |
| SkFlattenable* getFlat(unsigned index) const { |
| if (0 == index) { |
| return NULL; |
| } |
| return fFlatArray[index - 1]; |
| } |
| |
| void defFlattenable(PaintFlats pf, unsigned index) { |
| SkASSERT(index == fFlatArray.count() + 1); |
| SkFlattenable* obj = fReader->readFlattenable(); |
| *fFlatArray.append() = obj; |
| } |
| |
| void addTypeface() { |
| size_t size = fReader->readU32(); |
| const void* data = fReader->skip(SkAlign4(size)); |
| SkMemoryStream stream(data, size, false); |
| *fTypefaces.append() = SkTypeface::Deserialize(&stream); |
| } |
| void setTypeface(SkPaint* paint, unsigned id) { |
| paint->setTypeface(id ? fTypefaces[id - 1] : NULL); |
| } |
| |
| SkFlattenableReadBuffer* fReader; |
| |
| private: |
| SkPaint fPaint; |
| SkTDArray<SkFlattenable*> fFlatArray; |
| SkTDArray<SkTypeface*> fTypefaces; |
| SkTDArray<SkFlattenable::Factory> fFactoryArray; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| template <typename T> const T* skip(SkReader32* reader, int count = 1) { |
| SkASSERT(count >= 0); |
| size_t size = sizeof(T) * count; |
| SkASSERT(SkAlign4(size) == size); |
| return reinterpret_cast<const T*>(reader->skip(size)); |
| } |
| |
| template <typename T> const T* skipAlign(SkReader32* reader, int count = 1) { |
| SkASSERT(count >= 0); |
| size_t size = SkAlign4(sizeof(T) * count); |
| return reinterpret_cast<const T*>(reader->skip(size)); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static void clipPath_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| SkPath path; |
| path.unflatten(*reader); |
| canvas->clipPath(path, (SkRegion::Op)DrawOp_unpackData(op32)); |
| } |
| |
| static void clipRegion_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| SkRegion rgn; |
| SkReadRegion(reader, &rgn); |
| canvas->clipRegion(rgn, (SkRegion::Op)DrawOp_unpackData(op32)); |
| } |
| |
| static void clipRect_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| canvas->clipRect(*skip<SkRect>(reader), (SkRegion::Op)DrawOp_unpackData(op32)); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static void setMatrix_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| SkMatrix matrix; |
| SkReadMatrix(reader, &matrix); |
| canvas->setMatrix(matrix); |
| } |
| |
| static void concat_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| SkMatrix matrix; |
| SkReadMatrix(reader, &matrix); |
| canvas->concat(matrix); |
| } |
| |
| static void scale_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| const SkScalar* param = skip<SkScalar>(reader, 2); |
| canvas->scale(param[0], param[1]); |
| } |
| |
| static void skew_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| const SkScalar* param = skip<SkScalar>(reader, 2); |
| canvas->skew(param[0], param[1]); |
| } |
| |
| static void rotate_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| canvas->rotate(reader->readScalar()); |
| } |
| |
| static void translate_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| const SkScalar* param = skip<SkScalar>(reader, 2); |
| canvas->translate(param[0], param[1]); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static void save_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| canvas->save((SkCanvas::SaveFlags)DrawOp_unpackData(op32)); |
| } |
| |
| static void saveLayer_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| unsigned flags = DrawOp_unpackFlags(op32); |
| SkCanvas::SaveFlags saveFlags = (SkCanvas::SaveFlags)DrawOp_unpackData(op32); |
| |
| const SkRect* bounds = NULL; |
| if (flags & kSaveLayer_HasBounds_DrawOpFlag) { |
| bounds = skip<SkRect>(reader); |
| } |
| const SkPaint* paint = NULL; |
| if (flags & kSaveLayer_HasPaint_DrawOpFlag) { |
| paint = &state->paint(); |
| } |
| canvas->saveLayer(bounds, paint, saveFlags); |
| } |
| |
| static void restore_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| canvas->restore(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static void drawClear_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| SkColor color = 0; |
| if (DrawOp_unpackFlags(op32) & kClear_HasColor_DrawOpFlag) { |
| color = reader->readU32(); |
| } |
| canvas->clear(color); |
| } |
| |
| static void drawPaint_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| canvas->drawPaint(state->paint()); |
| } |
| |
| static void drawPoints_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| SkCanvas::PointMode mode = (SkCanvas::PointMode)DrawOp_unpackFlags(op32); |
| size_t count = reader->readU32(); |
| const SkPoint* pts = skip<SkPoint>(reader, count); |
| canvas->drawPoints(mode, count, pts, state->paint()); |
| } |
| |
| static void drawRect_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| canvas->drawRect(*skip<SkRect>(reader), state->paint()); |
| } |
| |
| static void drawPath_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| SkPath path; |
| path.unflatten(*reader); |
| canvas->drawPath(path, state->paint()); |
| } |
| |
| static void drawVertices_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| unsigned flags = DrawOp_unpackFlags(op32); |
| |
| SkCanvas::VertexMode mode = (SkCanvas::VertexMode)reader->readU32(); |
| int vertexCount = reader->readU32(); |
| const SkPoint* verts = skip<SkPoint>(reader, vertexCount); |
| |
| const SkPoint* texs = NULL; |
| if (flags & kDrawVertices_HasTexs_DrawOpFlag) { |
| texs = skip<SkPoint>(reader, vertexCount); |
| } |
| |
| const SkColor* colors = NULL; |
| if (flags & kDrawVertices_HasColors_DrawOpFlag) { |
| colors = skip<SkColor>(reader, vertexCount); |
| } |
| |
| // TODO: flatten/unflatten xfermodes |
| SkXfermode* xfer = NULL; |
| |
| int indexCount = 0; |
| const uint16_t* indices = NULL; |
| if (flags & kDrawVertices_HasIndices_DrawOpFlag) { |
| indexCount = reader->readU32(); |
| indices = skipAlign<uint16_t>(reader, indexCount); |
| } |
| |
| canvas->drawVertices(mode, vertexCount, verts, texs, colors, xfer, |
| indices, indexCount, state->paint()); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static void drawText_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| size_t len = reader->readU32(); |
| const void* text = reader->skip(SkAlign4(len)); |
| const SkScalar* xy = skip<SkScalar>(reader, 2); |
| canvas->drawText(text, len, xy[0], xy[1], state->paint()); |
| } |
| |
| static void drawPosText_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| size_t len = reader->readU32(); |
| const void* text = reader->skip(SkAlign4(len)); |
| size_t posCount = reader->readU32(); // compute by our writer |
| const SkPoint* pos = skip<SkPoint>(reader, posCount); |
| canvas->drawPosText(text, len, pos, state->paint()); |
| } |
| |
| static void drawPosTextH_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| size_t len = reader->readU32(); |
| const void* text = reader->skip(SkAlign4(len)); |
| size_t posCount = reader->readU32(); // compute by our writer |
| const SkScalar* xpos = skip<SkScalar>(reader, posCount); |
| SkScalar constY = reader->readScalar(); |
| canvas->drawPosTextH(text, len, xpos, constY, state->paint()); |
| } |
| |
| static void drawTextOnPath_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| size_t len = reader->readU32(); |
| const void* text = reader->skip(SkAlign4(len)); |
| |
| SkPath path; |
| path.unflatten(*reader); |
| |
| SkMatrix matrixStorage; |
| const SkMatrix* matrix = NULL; |
| if (DrawOp_unpackFlags(op32) & kDrawTextOnPath_HasMatrix_DrawOpFlag) { |
| SkReadMatrix(reader, &matrixStorage); |
| matrix = &matrixStorage; |
| } |
| |
| canvas->drawTextOnPath(text, len, path, matrix, state->paint()); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static void drawBitmap_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| UNIMPLEMENTED |
| } |
| |
| static void drawBitmapMatrix_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| UNIMPLEMENTED |
| } |
| |
| static void drawBitmapRect_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| UNIMPLEMENTED |
| } |
| |
| static void drawSprite_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| UNIMPLEMENTED |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static void drawData_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| // since we don't have a paint, we can use data for our (small) sizes |
| size_t size = DrawOp_unpackData(op32); |
| if (0 == size) { |
| size = reader->readU32(); |
| } |
| const void* data = reader->skip(SkAlign4(size)); |
| canvas->drawData(data, size); |
| } |
| |
| static void drawPicture_rp(SkCanvas* canvas, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| UNIMPLEMENTED |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static void paintOp_rp(SkCanvas*, SkReader32* reader, uint32_t op32, |
| SkGPipeState* state) { |
| size_t offset = reader->offset(); |
| size_t stop = offset + PaintOp_unpackData(op32); |
| SkPaint* p = state->editPaint(); |
| |
| do { |
| uint32_t p32 = reader->readU32(); |
| unsigned op = PaintOp_unpackOp(p32); |
| unsigned data = PaintOp_unpackData(p32); |
| |
| // SkDebugf(" read %08X op=%d flags=%d data=%d\n", p32, op, done, data); |
| |
| switch (op) { |
| case kReset_PaintOp: p->reset(); break; |
| case kFlags_PaintOp: p->setFlags(data); break; |
| case kColor_PaintOp: p->setColor(reader->readU32()); break; |
| case kStyle_PaintOp: p->setStyle((SkPaint::Style)data); break; |
| case kJoin_PaintOp: p->setStrokeJoin((SkPaint::Join)data); break; |
| case kCap_PaintOp: p->setStrokeCap((SkPaint::Cap)data); break; |
| case kWidth_PaintOp: p->setStrokeWidth(reader->readScalar()); break; |
| case kMiter_PaintOp: p->setStrokeMiter(reader->readScalar()); break; |
| case kEncoding_PaintOp: |
| p->setTextEncoding((SkPaint::TextEncoding)data); |
| break; |
| case kHinting_PaintOp: p->setHinting((SkPaint::Hinting)data); break; |
| case kAlign_PaintOp: p->setTextAlign((SkPaint::Align)data); break; |
| case kTextSize_PaintOp: p->setTextSize(reader->readScalar()); break; |
| case kTextScaleX_PaintOp: p->setTextScaleX(reader->readScalar()); break; |
| case kTextSkewX_PaintOp: p->setTextSkewX(reader->readScalar()); break; |
| |
| case kFlatIndex_PaintOp: { |
| PaintFlats pf = (PaintFlats)PaintOp_unpackFlags(p32); |
| unsigned index = data; |
| set_paintflat(p, state->getFlat(index), pf); |
| break; |
| } |
| |
| case kTypeface_PaintOp: state->setTypeface(p, data); break; |
| default: SkASSERT(!"bad paintop"); return; |
| } |
| SkASSERT(reader->offset() <= stop); |
| } while (reader->offset() < stop); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static void def_Typeface_rp(SkCanvas*, SkReader32*, uint32_t, SkGPipeState* state) { |
| state->addTypeface(); |
| } |
| |
| static void def_PaintFlat_rp(SkCanvas*, SkReader32*, uint32_t op32, |
| SkGPipeState* state) { |
| PaintFlats pf = (PaintFlats)DrawOp_unpackFlags(op32); |
| unsigned index = DrawOp_unpackData(op32); |
| state->defFlattenable(pf, index); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static void skip_rp(SkCanvas*, SkReader32* reader, uint32_t op32, SkGPipeState*) { |
| size_t bytes = DrawOp_unpackData(op32); |
| (void)reader->skip(bytes); |
| } |
| |
| static void done_rp(SkCanvas*, SkReader32*, uint32_t, SkGPipeState*) {} |
| |
| typedef void (*ReadProc)(SkCanvas*, SkReader32*, uint32_t op32, SkGPipeState*); |
| |
| static const ReadProc gReadTable[] = { |
| skip_rp, |
| clipPath_rp, |
| clipRegion_rp, |
| clipRect_rp, |
| concat_rp, |
| drawBitmap_rp, |
| drawBitmapMatrix_rp, |
| drawBitmapRect_rp, |
| drawClear_rp, |
| drawData_rp, |
| drawPaint_rp, |
| drawPath_rp, |
| drawPicture_rp, |
| drawPoints_rp, |
| drawPosText_rp, |
| drawPosTextH_rp, |
| drawRect_rp, |
| drawSprite_rp, |
| drawText_rp, |
| drawTextOnPath_rp, |
| drawVertices_rp, |
| restore_rp, |
| rotate_rp, |
| save_rp, |
| saveLayer_rp, |
| scale_rp, |
| setMatrix_rp, |
| skew_rp, |
| translate_rp, |
| |
| paintOp_rp, |
| def_Typeface_rp, |
| def_PaintFlat_rp, |
| |
| done_rp |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkGPipeState::SkGPipeState() {} |
| |
| SkGPipeState::~SkGPipeState() { |
| fTypefaces.safeUnrefAll(); |
| fFlatArray.safeUnrefAll(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #include "SkGPipe.h" |
| |
| SkGPipeReader::SkGPipeReader(SkCanvas* target) { |
| SkSafeRef(target); |
| fCanvas = target; |
| fState = NULL; |
| } |
| |
| SkGPipeReader::~SkGPipeReader() { |
| SkSafeUnref(fCanvas); |
| delete fState; |
| } |
| |
| SkGPipeReader::Status SkGPipeReader::playback(const void* data, size_t length, |
| size_t* bytesRead, bool readAtom) { |
| if (NULL == fCanvas) { |
| return kError_Status; |
| } |
| |
| if (NULL == fState) { |
| fState = new SkGPipeState; |
| } |
| |
| SkASSERT(SK_ARRAY_COUNT(gReadTable) == (kDone_DrawOp + 1)); |
| |
| const ReadProc* table = gReadTable; |
| SkFlattenableReadBuffer reader(data, length); |
| SkCanvas* canvas = fCanvas; |
| Status status = kEOF_Status; |
| |
| fState->setReader(&reader); |
| while (!reader.eof()) { |
| uint32_t op32 = reader.readU32(); |
| unsigned op = DrawOp_unpackOp(op32); |
| SkDEBUGCODE(DrawOps drawOp = (DrawOps)op;) |
| |
| if (op >= SK_ARRAY_COUNT(gReadTable)) { |
| SkDebugf("---- bad op during GPipeState::playback\n"); |
| status = kError_Status; |
| break; |
| } |
| if (kDone_DrawOp == op) { |
| status = kDone_Status; |
| break; |
| } |
| table[op](canvas, &reader, op32, fState); |
| if (readAtom && |
| (table[op] != paintOp_rp && |
| table[op] != def_Typeface_rp && |
| table[op] != def_PaintFlat_rp |
| )) { |
| status = kReadAtom_Status; |
| break; |
| } |
| } |
| |
| if (bytesRead) { |
| *bytesRead = reader.offset(); |
| } |
| return status; |
| } |
| |
| |