/* * Copyright 2014 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "src/core/SkRecorder.h" #include "include/core/SkImage.h" #include "include/core/SkPicture.h" #include "include/core/SkSurface.h" #include "include/private/SkTo.h" #include "src/core/SkBigPicture.h" #include "src/core/SkCanvasPriv.h" #include "src/core/SkGlyphRun.h" #include "src/utils/SkPatchUtils.h" #include #include SkDrawableList::~SkDrawableList() { fArray.unrefAll(); } SkBigPicture::SnapshotArray* SkDrawableList::newDrawableSnapshot() { const int count = fArray.count(); if (0 == count) { return nullptr; } SkAutoTMalloc pics(count); for (int i = 0; i < count; ++i) { pics[i] = fArray[i]->newPictureSnapshot(); } return new SkBigPicture::SnapshotArray(pics.release(), count); } void SkDrawableList::append(SkDrawable* drawable) { *fArray.append() = SkRef(drawable); } /////////////////////////////////////////////////////////////////////////////////////////////// static SkIRect safe_picture_bounds(const SkRect& bounds) { SkIRect picBounds = bounds.roundOut(); // roundOut() saturates the float edges to +/-SK_MaxS32FitsInFloat (~2billion), but this is // large enough that width/height calculations will overflow, leading to negative dimensions. static constexpr int32_t kSafeEdge = SK_MaxS32FitsInFloat / 2 - 1; static constexpr SkIRect kSafeBounds = {-kSafeEdge, -kSafeEdge, kSafeEdge, kSafeEdge}; static_assert((kSafeBounds.fRight - kSafeBounds.fLeft) >= 0 && (kSafeBounds.fBottom - kSafeBounds.fTop) >= 0); if (!picBounds.intersect(kSafeBounds)) { picBounds.setEmpty(); } return picBounds; } SkRecorder::SkRecorder(SkRecord* record, int width, int height, SkMiniRecorder* mr) : SkCanvasVirtualEnforcer(width, height) , fApproxBytesUsedBySubPictures(0) , fRecord(record) , fMiniRecorder(mr) { SkASSERT(this->imageInfo().width() >= 0 && this->imageInfo().height() >= 0); } SkRecorder::SkRecorder(SkRecord* record, const SkRect& bounds, SkMiniRecorder* mr) : SkCanvasVirtualEnforcer(safe_picture_bounds(bounds)) , fApproxBytesUsedBySubPictures(0) , fRecord(record) , fMiniRecorder(mr) { SkASSERT(this->imageInfo().width() >= 0 && this->imageInfo().height() >= 0); } void SkRecorder::reset(SkRecord* record, const SkRect& bounds, SkMiniRecorder* mr) { this->forgetRecord(); fRecord = record; this->resetCanvas(safe_picture_bounds(bounds)); SkASSERT(this->imageInfo().width() >= 0 && this->imageInfo().height() >= 0); fMiniRecorder = mr; } void SkRecorder::forgetRecord() { fDrawableList.reset(nullptr); fApproxBytesUsedBySubPictures = 0; fRecord = nullptr; } // To make appending to fRecord a little less verbose. template void SkRecorder::append(Args&&... args) { if (fMiniRecorder) { this->flushMiniRecorder(); } new (fRecord->append()) T{std::forward(args)...}; } #define TRY_MINIRECORDER(method, ...) \ if (fMiniRecorder && fMiniRecorder->method(__VA_ARGS__)) return // For methods which must call back into SkNoDrawCanvas. #define INHERITED(method, ...) this->SkNoDrawCanvas::method(__VA_ARGS__) // Use copy() only for optional arguments, to be copied if present or skipped if not. // (For most types we just pass by value and let copy constructors do their thing.) template T* SkRecorder::copy(const T* src) { if (nullptr == src) { return nullptr; } return new (fRecord->alloc()) T(*src); } // This copy() is for arrays. // It will work with POD or non-POD, though currently we only use it for POD. template T* SkRecorder::copy(const T src[], size_t count) { if (nullptr == src) { return nullptr; } T* dst = fRecord->alloc(count); for (size_t i = 0; i < count; i++) { new (dst + i) T(src[i]); } return dst; } // Specialization for copying strings, using memcpy. // This measured around 2x faster for copying code points, // but I found no corresponding speedup for other arrays. template <> char* SkRecorder::copy(const char src[], size_t count) { if (nullptr == src) { return nullptr; } char* dst = fRecord->alloc(count); memcpy(dst, src, count); return dst; } // As above, assuming and copying a terminating \0. template <> char* SkRecorder::copy(const char* src) { return this->copy(src, strlen(src)+1); } void SkRecorder::flushMiniRecorder() { if (fMiniRecorder) { SkMiniRecorder* mr = fMiniRecorder; fMiniRecorder = nullptr; // Needs to happen before flushAndReset() or we recurse forever. mr->flushAndReset(this); } } void SkRecorder::onDrawPaint(const SkPaint& paint) { this->append(paint); } void SkRecorder::onDrawBehind(const SkPaint& paint) { this->append(paint); } void SkRecorder::onDrawPoints(PointMode mode, size_t count, const SkPoint pts[], const SkPaint& paint) { this->append(paint, mode, SkToUInt(count), this->copy(pts, count)); } void SkRecorder::onDrawRect(const SkRect& rect, const SkPaint& paint) { TRY_MINIRECORDER(drawRect, rect, paint); this->append(paint, rect); } void SkRecorder::onDrawRegion(const SkRegion& region, const SkPaint& paint) { this->append(paint, region); } void SkRecorder::onDrawOval(const SkRect& oval, const SkPaint& paint) { this->append(paint, oval); } void SkRecorder::onDrawArc(const SkRect& oval, SkScalar startAngle, SkScalar sweepAngle, bool useCenter, const SkPaint& paint) { this->append(paint, oval, startAngle, sweepAngle, useCenter); } void SkRecorder::onDrawRRect(const SkRRect& rrect, const SkPaint& paint) { this->append(paint, rrect); } void SkRecorder::onDrawDRRect(const SkRRect& outer, const SkRRect& inner, const SkPaint& paint) { this->append(paint, outer, inner); } void SkRecorder::onDrawDrawable(SkDrawable* drawable, const SkMatrix* matrix) { if (!fDrawableList) { fDrawableList = std::make_unique(); } fDrawableList->append(drawable); this->append(this->copy(matrix), drawable->getBounds(), fDrawableList->count() - 1); } void SkRecorder::onDrawPath(const SkPath& path, const SkPaint& paint) { TRY_MINIRECORDER(drawPath, path, paint); this->append(paint, path); } void SkRecorder::onDrawImage2(const SkImage* image, SkScalar x, SkScalar y, const SkSamplingOptions& sampling, const SkPaint* paint) { this->append(this->copy(paint), sk_ref_sp(image), x, y, sampling); } void SkRecorder::onDrawImageRect2(const SkImage* image, const SkRect& src, const SkRect& dst, const SkSamplingOptions& sampling, const SkPaint* paint, SrcRectConstraint constraint) { this->append(this->copy(paint), sk_ref_sp(image), src, dst, sampling, constraint); } void SkRecorder::onDrawImageLattice2(const SkImage* image, const Lattice& lattice, const SkRect& dst, SkFilterMode filter, const SkPaint* paint) { int flagCount = lattice.fRectTypes ? (lattice.fXCount + 1) * (lattice.fYCount + 1) : 0; SkASSERT(lattice.fBounds); this->append(this->copy(paint), sk_ref_sp(image), lattice.fXCount, this->copy(lattice.fXDivs, lattice.fXCount), lattice.fYCount, this->copy(lattice.fYDivs, lattice.fYCount), flagCount, this->copy(lattice.fRectTypes, flagCount), this->copy(lattice.fColors, flagCount), *lattice.fBounds, dst, filter); } void SkRecorder::onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y, const SkPaint& paint) { TRY_MINIRECORDER(drawTextBlob, blob, x, y, paint); this->append(paint, sk_ref_sp(blob), x, y); } void SkRecorder::onDrawGlyphRunList(const SkGlyphRunList& glyphRunList, const SkPaint& paint) { sk_sp blob = sk_ref_sp(glyphRunList.blob()); if (glyphRunList.blob() == nullptr) { blob = glyphRunList.makeBlob(); } this->onDrawTextBlob(blob.get(), glyphRunList.origin().x(), glyphRunList.origin().y(), paint); } void SkRecorder::onDrawPicture(const SkPicture* pic, const SkMatrix* matrix, const SkPaint* paint) { fApproxBytesUsedBySubPictures += pic->approximateBytesUsed(); this->append(this->copy(paint), sk_ref_sp(pic), matrix ? *matrix : SkMatrix::I()); } void SkRecorder::onDrawVerticesObject(const SkVertices* vertices, SkBlendMode bmode, const SkPaint& paint) { this->append(paint, sk_ref_sp(const_cast(vertices)), bmode); } void SkRecorder::onDrawPatch(const SkPoint cubics[12], const SkColor colors[4], const SkPoint texCoords[4], SkBlendMode bmode, const SkPaint& paint) { this->append(paint, cubics ? this->copy(cubics, SkPatchUtils::kNumCtrlPts) : nullptr, colors ? this->copy(colors, SkPatchUtils::kNumCorners) : nullptr, texCoords ? this->copy(texCoords, SkPatchUtils::kNumCorners) : nullptr, bmode); } void SkRecorder::onDrawAtlas2(const SkImage* atlas, const SkRSXform xform[], const SkRect tex[], const SkColor colors[], int count, SkBlendMode mode, const SkSamplingOptions& sampling, const SkRect* cull, const SkPaint* paint) { this->append(this->copy(paint), sk_ref_sp(atlas), this->copy(xform, count), this->copy(tex, count), this->copy(colors, count), count, mode, sampling, this->copy(cull)); } void SkRecorder::onDrawShadowRec(const SkPath& path, const SkDrawShadowRec& rec) { this->append(path, rec); } void SkRecorder::onDrawAnnotation(const SkRect& rect, const char key[], SkData* value) { this->append(rect, SkString(key), sk_ref_sp(value)); } void SkRecorder::onDrawEdgeAAQuad(const SkRect& rect, const SkPoint clip[4], QuadAAFlags aa, const SkColor4f& color, SkBlendMode mode) { this->append( rect, this->copy(clip, 4), aa, color, mode); } void SkRecorder::onDrawEdgeAAImageSet2(const ImageSetEntry set[], int count, const SkPoint dstClips[], const SkMatrix preViewMatrices[], const SkSamplingOptions& sampling, const SkPaint* paint, SrcRectConstraint constraint) { int totalDstClipCount, totalMatrixCount; SkCanvasPriv::GetDstClipAndMatrixCounts(set, count, &totalDstClipCount, &totalMatrixCount); SkAutoTArray setCopy(count); for (int i = 0; i < count; ++i) { setCopy[i] = set[i]; } this->append(this->copy(paint), std::move(setCopy), count, this->copy(dstClips, totalDstClipCount), this->copy(preViewMatrices, totalMatrixCount), sampling, constraint); } void SkRecorder::onFlush() { this->append(); } void SkRecorder::willSave() { this->append(); } SkCanvas::SaveLayerStrategy SkRecorder::getSaveLayerStrategy(const SaveLayerRec& rec) { this->append(this->copy(rec.fBounds) , this->copy(rec.fPaint) , sk_ref_sp(rec.fBackdrop) , rec.fSaveLayerFlags , SkCanvasPriv::GetBackdropScaleFactor(rec)); return SkCanvas::kNoLayer_SaveLayerStrategy; } bool SkRecorder::onDoSaveBehind(const SkRect* subset) { this->append(this->copy(subset)); return false; } void SkRecorder::didRestore() { this->append(this->getTotalMatrix()); } void SkRecorder::onMarkCTM(const char* name) { this->append(SkString(name)); } void SkRecorder::didConcat44(const SkM44& m) { this->append(m); } void SkRecorder::didSetM44(const SkM44& m) { this->append(m); } void SkRecorder::didScale(SkScalar sx, SkScalar sy) { this->append(sx, sy); } void SkRecorder::didTranslate(SkScalar dx, SkScalar dy) { this->append(dx, dy); } void SkRecorder::onClipRect(const SkRect& rect, SkClipOp op, ClipEdgeStyle edgeStyle) { INHERITED(onClipRect, rect, op, edgeStyle); SkRecords::ClipOpAndAA opAA(op, kSoft_ClipEdgeStyle == edgeStyle); this->append(rect, opAA); } void SkRecorder::onClipRRect(const SkRRect& rrect, SkClipOp op, ClipEdgeStyle edgeStyle) { INHERITED(onClipRRect, rrect, op, edgeStyle); SkRecords::ClipOpAndAA opAA(op, kSoft_ClipEdgeStyle == edgeStyle); this->append(rrect, opAA); } void SkRecorder::onClipPath(const SkPath& path, SkClipOp op, ClipEdgeStyle edgeStyle) { INHERITED(onClipPath, path, op, edgeStyle); SkRecords::ClipOpAndAA opAA(op, kSoft_ClipEdgeStyle == edgeStyle); this->append(path, opAA); } void SkRecorder::onClipShader(sk_sp cs, SkClipOp op) { INHERITED(onClipShader, cs, op); this->append(std::move(cs), op); } void SkRecorder::onClipRegion(const SkRegion& deviceRgn, SkClipOp op) { INHERITED(onClipRegion, deviceRgn, op); this->append(deviceRgn, op); } void SkRecorder::onResetClip() { INHERITED(onResetClip); this->append(); } sk_sp SkRecorder::onNewSurface(const SkImageInfo&, const SkSurfaceProps&) { return nullptr; }