4aa4441186
Sketching a thin (as in close-to-skia-semantics) scene graph API, focused on
external animation, inval tracking and minimal repaint.
Only a few concrete classes/features so far:
* Rect/Color/Transform/Group
* basic inval tracking
* a trivial animated sample with inval visualization
Pretty much everything (especially naming) is volatile, so treat accordingly.
The interesting bits to review are likely in Node.{h,cpp} for inval and
SampleSGInval.cpp for usage.
Initial class hierarchy:
* Node: invalidation/ancestors tracking
|
-- * RenderNode: onRender(SkCanvas)
| |
| -- * Draw (concrete): rendering a [geometry, paint] tuple
| |
| -- * Group (concrete): grouping multiple RenderNodes
| |
| -- * EffectNode: single-descendant effect wrapper
| |
| -- * Transform (concrete): transform effect
|
-- * PaintNode: onMakePaint()
| |
| -- * Color (concrete): SkColor paint wrapper
|
-- * GeometryNode: onComputeBounds(), onDraw(SkCanvas, SkPaint)
|
-- * Rect (concrete): SkRect wrapper
TBR=
Change-Id: Iacf9b773c181a7582ecd31ee968562f179d1aa1b
Reviewed-on: https://skia-review.googlesource.com/85502
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
39 lines
861 B
C++
39 lines
861 B
C++
/*
|
|
* Copyright 2017 Google Inc.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#include "SkSGDraw.h"
|
|
|
|
#include "SkSGGeometryNode.h"
|
|
#include "SkSGPaintNode.h"
|
|
|
|
namespace sksg {
|
|
|
|
Draw::Draw(sk_sp<GeometryNode> geometry, sk_sp<PaintNode> paint)
|
|
: fGeometry(std::move(geometry))
|
|
, fPaint(std::move(paint)) {
|
|
fGeometry->addInvalReceiver(this);
|
|
fPaint->addInvalReceiver(this);
|
|
}
|
|
|
|
Draw::~Draw() {
|
|
fGeometry->removeInvalReceiver(this);
|
|
fPaint->removeInvalReceiver(this);
|
|
}
|
|
|
|
void Draw::onRender(SkCanvas* canvas) const {
|
|
fGeometry->draw(canvas, fPaint->makePaint());
|
|
}
|
|
|
|
void Draw::onRevalidate(InvalidationController* ic, const SkMatrix& ctm) {
|
|
SkASSERT(this->isInvalidated());
|
|
|
|
fGeometry->revalidate(ic, ctm);
|
|
fPaint->revalidate(ic, ctm);
|
|
}
|
|
|
|
} // namespace sksg
|