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
Draw(sk_sp<GeometryNode> geometry,sk_sp<PaintNode> paint)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
~Draw()24 Draw::~Draw() {
25 this->unobserveInval(fGeometry);
26 this->unobserveInval(fPaint);
27 }
28
onRender(SkCanvas * canvas,const RenderContext * ctx) const29 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
onRevalidate(InvalidationController * ic,const SkMatrix & ctm)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