1 /* 2 * Copyright 2017 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 "SkSGDraw.h" 9 10 #include "SkSGGeometryNode.h" 11 #include "SkSGInvalidationController.h" 12 #include "SkSGPaintNode.h" 13 #include "SkTLazy.h" 14 15 namespace sksg { 16 17 Draw::Draw(sk_sp<GeometryNode> geometry, sk_sp<PaintNode> paint) 18 : fGeometry(std::move(geometry)) 19 , fPaint(std::move(paint)) { 20 this->observeInval(fGeometry); 21 this->observeInval(fPaint); 22 } 23 24 Draw::~Draw() { 25 this->unobserveInval(fGeometry); 26 this->unobserveInval(fPaint); 27 } 28 29 void Draw::onRender(SkCanvas* canvas, const RenderContext* ctx) const { 30 auto paint = fPaint->makePaint(); 31 if (ctx) { 32 ctx->modulatePaint(&paint); 33 } 34 35 const auto skipDraw = paint.nothingToDraw() || 36 (paint.getStyle() == SkPaint::kStroke_Style && paint.getStrokeWidth() <= 0); 37 38 if (!skipDraw) { 39 fGeometry->draw(canvas, paint); 40 } 41 } 42 43 SkRect Draw::onRevalidate(InvalidationController* ic, const SkMatrix& ctm) { 44 SkASSERT(this->hasInval()); 45 46 auto bounds = fGeometry->revalidate(ic, ctm); 47 fPaint->revalidate(ic, ctm); 48 49 const auto paint = fPaint->makePaint(); 50 SkASSERT(paint.canComputeFastBounds()); 51 52 return paint.computeFastBounds(bounds, &bounds); 53 } 54 55 } // namespace sksg 56
