| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/utils/SkPaintFilterCanvas.h" |
| |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkPixmap.h" |
| #include "include/core/SkPoint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkSurface.h" // IWYU pragma: keep |
| |
| #include <optional> |
| |
| class SkData; |
| class SkDrawable; |
| class SkImage; |
| class SkPath; |
| class SkPicture; |
| class SkRRect; |
| class SkRegion; |
| class SkSurfaceProps; |
| class SkTextBlob; |
| class SkVertices; |
| struct SkDrawShadowRec; |
| |
| class SkPaintFilterCanvas::AutoPaintFilter { |
| public: |
| AutoPaintFilter(const SkPaintFilterCanvas* canvas, const SkPaint* paint) |
| : fPaint(paint ? *paint : SkPaint()) { |
| fShouldDraw = canvas->onFilter(fPaint); |
| } |
| |
| AutoPaintFilter(const SkPaintFilterCanvas* canvas, const SkPaint& paint) |
| : AutoPaintFilter(canvas, &paint) { } |
| |
| const SkPaint& paint() const { return fPaint; } |
| |
| bool shouldDraw() const { return fShouldDraw; } |
| |
| private: |
| SkPaint fPaint; |
| bool fShouldDraw; |
| }; |
| |
| SkPaintFilterCanvas::SkPaintFilterCanvas(SkCanvas *canvas) |
| : SkCanvasVirtualEnforcer<SkNWayCanvas>(canvas->imageInfo().width(), |
| canvas->imageInfo().height()) { |
| |
| // Transfer matrix & clip state before adding the target canvas. |
| this->clipRect(SkRect::Make(canvas->getDeviceClipBounds())); |
| this->setMatrix(canvas->getLocalToDevice()); |
| |
| this->addCanvas(canvas); |
| } |
| |
| void SkPaintFilterCanvas::onDrawPaint(const SkPaint& paint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawPaint(apf.paint()); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawBehind(const SkPaint& paint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawBehind(apf.paint()); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawPoints(PointMode mode, size_t count, const SkPoint pts[], |
| const SkPaint& paint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawPoints(mode, count, pts, apf.paint()); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawRect(const SkRect& rect, const SkPaint& paint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawRect(rect, apf.paint()); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawRRect(const SkRRect& rrect, const SkPaint& paint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawRRect(rrect, apf.paint()); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawDRRect(const SkRRect& outer, const SkRRect& inner, |
| const SkPaint& paint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawDRRect(outer, inner, apf.paint()); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawRegion(const SkRegion& region, const SkPaint& paint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawRegion(region, apf.paint()); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawOval(const SkRect& rect, const SkPaint& paint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawOval(rect, apf.paint()); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawArc(const SkRect& rect, SkScalar startAngle, SkScalar sweepAngle, |
| bool useCenter, const SkPaint& paint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawArc(rect, startAngle, sweepAngle, useCenter, apf.paint()); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawPath(const SkPath& path, const SkPaint& paint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawPath(path, apf.paint()); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawImage2(const SkImage* image, SkScalar left, SkScalar top, |
| const SkSamplingOptions& sampling, const SkPaint* paint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawImage2(image, left, top, sampling, &apf.paint()); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawImageRect2(const SkImage* image, const SkRect& src, |
| const SkRect& dst, const SkSamplingOptions& sampling, |
| const SkPaint* paint, SrcRectConstraint constraint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawImageRect2(image, src, dst, sampling, &apf.paint(), constraint); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawImageLattice2(const SkImage* image, const Lattice& lattice, |
| const SkRect& dst, SkFilterMode filter, |
| const SkPaint* paint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawImageLattice2(image, lattice, dst, filter, &apf.paint()); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawVerticesObject(const SkVertices* vertices, |
| SkBlendMode bmode, const SkPaint& paint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawVerticesObject(vertices, bmode, apf.paint()); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawPatch(const SkPoint cubics[], const SkColor colors[], |
| const SkPoint texCoords[], SkBlendMode bmode, |
| const SkPaint& paint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawPatch(cubics, colors, texCoords, bmode, apf.paint()); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawPicture(const SkPicture* picture, const SkMatrix* m, |
| const SkPaint* originalPaint) { |
| AutoPaintFilter apf(this, originalPaint); |
| if (apf.shouldDraw()) { |
| const SkPaint* newPaint = &apf.paint(); |
| |
| // Passing a paint (-vs- passing null) makes drawPicture draw into a layer... |
| // much slower, and can produce different blending. Thus we should only do this |
| // if the filter's effect actually impacts the picture. |
| if (originalPaint == nullptr) { |
| if ( newPaint->getAlphaf() == 1.0f |
| && newPaint->getColorFilter() == nullptr |
| && newPaint->getImageFilter() == nullptr |
| && newPaint->asBlendMode() == SkBlendMode::kSrcOver) { |
| // restore the original nullptr |
| newPaint = nullptr; |
| } |
| } |
| this->SkNWayCanvas::onDrawPicture(picture, m, newPaint); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawDrawable(SkDrawable* drawable, const SkMatrix* matrix) { |
| // There is no paint to filter in this case, but we can still filter on type. |
| // Subclasses need to unroll the drawable explicity (by overriding this method) in |
| // order to actually filter nested content. |
| AutoPaintFilter apf(this, nullptr); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawDrawable(drawable, matrix); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawGlyphRunList( |
| const sktext::GlyphRunList& list, const SkPaint& paint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawGlyphRunList(list, apf.paint()); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y, |
| const SkPaint& paint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawTextBlob(blob, x, y, apf.paint()); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawAtlas2(const SkImage* image, const SkRSXform xform[], |
| const SkRect tex[], const SkColor colors[], int count, |
| SkBlendMode bmode, const SkSamplingOptions& sampling, |
| const SkRect* cull, const SkPaint* paint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawAtlas2(image, xform, tex, colors, count, bmode, sampling, cull, |
| &apf.paint()); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawAnnotation(const SkRect& rect, const char key[], SkData* value) { |
| this->SkNWayCanvas::onDrawAnnotation(rect, key, value); |
| } |
| |
| void SkPaintFilterCanvas::onDrawShadowRec(const SkPath& path, const SkDrawShadowRec& rec) { |
| this->SkNWayCanvas::onDrawShadowRec(path, rec); |
| } |
| |
| void SkPaintFilterCanvas::onDrawEdgeAAQuad(const SkRect& rect, const SkPoint clip[4], |
| QuadAAFlags aa, const SkColor4f& color, SkBlendMode mode) { |
| SkPaint paint; |
| paint.setColor(color); |
| paint.setBlendMode(mode); |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawEdgeAAQuad(rect, clip, aa, apf.paint().getColor4f(), |
| apf.paint().getBlendMode_or(SkBlendMode::kSrcOver)); |
| } |
| } |
| |
| void SkPaintFilterCanvas::onDrawEdgeAAImageSet2(const ImageSetEntry set[], int count, |
| const SkPoint dstClips[], |
| const SkMatrix preViewMatrices[], |
| const SkSamplingOptions& sampling, |
| const SkPaint* paint, |
| SrcRectConstraint constraint) { |
| AutoPaintFilter apf(this, paint); |
| if (apf.shouldDraw()) { |
| this->SkNWayCanvas::onDrawEdgeAAImageSet2( |
| set, count, dstClips, preViewMatrices, sampling, &apf.paint(), constraint); |
| } |
| } |
| |
| sk_sp<SkSurface> SkPaintFilterCanvas::onNewSurface(const SkImageInfo& info, |
| const SkSurfaceProps& props) { |
| return this->proxy()->makeSurface(info, &props); |
| } |
| |
| bool SkPaintFilterCanvas::onPeekPixels(SkPixmap* pixmap) { |
| return this->proxy()->peekPixels(pixmap); |
| } |
| |
| bool SkPaintFilterCanvas::onAccessTopLayerPixels(SkPixmap* pixmap) { |
| SkImageInfo info; |
| size_t rowBytes; |
| |
| void* addr = this->proxy()->accessTopLayerPixels(&info, &rowBytes); |
| if (!addr) { |
| return false; |
| } |
| |
| pixmap->reset(info, addr, rowBytes); |
| return true; |
| } |
| |
| SkImageInfo SkPaintFilterCanvas::onImageInfo() const { |
| return this->proxy()->imageInfo(); |
| } |
| |
| bool SkPaintFilterCanvas::onGetProps(SkSurfaceProps* props) const { |
| return this->proxy()->getProps(props); |
| } |