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96df6c373c
We still use SkPicture as our rasterization backend, but now we're uploading our layer tree to C++. A future patch will push the layer tree deeper into the system and we'll eventually switch backends.
101 lines
2.6 KiB
C++
101 lines
2.6 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "sky/engine/core/compositing/SceneBuilder.h"
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#include "sky/engine/core/painting/Matrix.h"
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#include "third_party/skia/include/core/SkColorFilter.h"
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namespace blink {
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SceneBuilder::SceneBuilder(const Rect& bounds)
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{
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m_canvas = m_pictureRecorder.beginRecording(bounds.sk_rect,
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&m_rtreeFactory, SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag);
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}
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SceneBuilder::~SceneBuilder()
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{
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}
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void SceneBuilder::pushTransform(const Float32List& matrix4, ExceptionState& es)
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{
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SkMatrix sk_matrix = toSkMatrix(matrix4, es);
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if (es.had_exception())
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return;
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m_canvas->save();
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m_canvas->concat(sk_matrix);
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}
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void SceneBuilder::pushClipRect(const Rect& rect)
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{
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if (!m_canvas)
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return;
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m_canvas->save();
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m_canvas->clipRect(rect.sk_rect);
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}
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void SceneBuilder::pushClipRRect(const RRect* rrect, const Rect& bounds)
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{
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if (!m_canvas)
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return;
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m_canvas->saveLayer(&bounds.sk_rect, nullptr);
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m_canvas->clipRRect(rrect->rrect());
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}
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void SceneBuilder::pushClipPath(const CanvasPath* path, const Rect& bounds)
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{
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if (!m_canvas)
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return;
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m_canvas->saveLayer(&bounds.sk_rect, nullptr);
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m_canvas->clipPath(path->path());
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}
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void SceneBuilder::pushOpacity(int alpha, const Rect& bounds)
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{
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if (!m_canvas)
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return;
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SkColor color = SkColorSetARGB(alpha, 0, 0, 0);
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RefPtr<SkColorFilter> colorFilter = adoptRef(SkColorFilter::CreateModeFilter(color, SkXfermode::kSrcOver_Mode));
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SkPaint paint;
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paint.setColorFilter(colorFilter.get());
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m_canvas->saveLayer(&bounds.sk_rect, &paint);
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}
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void SceneBuilder::pushColorFilter(SkColor color, SkXfermode::Mode transferMode, const Rect& bounds)
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{
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if (!m_canvas)
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return;
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RefPtr<SkColorFilter> colorFilter = adoptRef(SkColorFilter::CreateModeFilter(color, transferMode));
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SkPaint paint;
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paint.setColorFilter(colorFilter.get());
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m_canvas->saveLayer(&bounds.sk_rect, &paint);
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}
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void SceneBuilder::pop()
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{
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if (!m_canvas)
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return;
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m_canvas->restore();
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}
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void SceneBuilder::addPicture(const Offset& offset, Picture* picture, const Rect& paintBounds)
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{
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if (!m_canvas)
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return;
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m_canvas->save();
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m_canvas->translate(offset.sk_size.width(), offset.sk_size.height());
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m_canvas->drawPicture(picture->toSkia());
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m_canvas->restore();
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}
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PassRefPtr<Scene> SceneBuilder::build()
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{
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RefPtr<Scene> scene = Scene::create(adoptRef(m_pictureRecorder.endRecording()));
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m_canvas = nullptr;
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return scene.release();
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}
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} // namespace blink
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