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Issue 1749063002: Mozart: Improve internal scene graph representation. (Closed) Base URL: git@github.com:domokit/mojo.git@moz-0
Patch Set: avoid unnecessary hashtable lookups Created 4 years, 9 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "services/gfx/compositor/render/render_layer.h"
6
7 #include "base/logging.h"
8 #include "third_party/skia/include/core/SkCanvas.h"
9 #include "third_party/skia/include/core/SkPicture.h"
10 #include "third_party/skia/include/core/SkPictureRecorder.h"
11
12 namespace compositor {
13
14 RenderLayer::RenderLayer(const skia::RefPtr<SkPicture>& picture)
15 : picture_(picture) {}
16
17 RenderLayer::~RenderLayer() {}
18
19 RenderLayerBuilder::RenderLayerBuilder() : RenderLayerBuilder(nullptr) {}
20
21 RenderLayerBuilder::RenderLayerBuilder(const SkRect* cull_rect) {
22 recorder_.beginRecording(cull_rect ? *cull_rect : SkRect::MakeLargest());
23 canvas_ = recorder_.getRecordingCanvas();
24 }
25
26 RenderLayerBuilder::~RenderLayerBuilder() {}
27
28 void RenderLayerBuilder::PushScene(uint32_t scene_token, uint32_t version) {
29 DCHECK(canvas_);
30 // TODO: remember scene information for hit testing
31 }
32
33 void RenderLayerBuilder::PopScene() {
34 DCHECK(canvas_);
35 }
36
37 void RenderLayerBuilder::PushNode(uint32_t node_id, uint32_t hit_id) {
38 DCHECK(canvas_);
39 // TODO: remember scene information for hit testing
40 // TODO: optimize save() / restore() commands
41 canvas_->save();
42 }
43
44 void RenderLayerBuilder::PopNode() {
45 DCHECK(canvas_);
46 // TODO: optimize save() / restore() commands
47 canvas_->restore();
48 }
49
50 void RenderLayerBuilder::ApplyTransform(const SkMatrix& content_transform) {
51 DCHECK(canvas_);
52 canvas_->concat(content_transform);
53 }
54
55 void RenderLayerBuilder::ApplyClip(const SkRect& content_clip) {
56 DCHECK(canvas_);
57 canvas_->clipRect(content_clip);
58 }
59
60 void RenderLayerBuilder::DrawRect(const SkRect& content_rect,
61 const SkPaint& paint) {
62 DCHECK(canvas_);
63 canvas_->drawRect(content_rect, paint);
64 }
65
66 void RenderLayerBuilder::DrawImage(const std::shared_ptr<RenderImage>& image,
67 const SkRect& content_rect,
68 const SkRect& image_rect,
69 const SkPaint& paint) {
70 DCHECK(image);
71 DCHECK(canvas_);
72 canvas_->drawImageRect(image->image().get(), image_rect, content_rect,
73 &paint);
74 }
75
76 void RenderLayerBuilder::DrawLayer(const std::shared_ptr<RenderLayer>& layer) {
77 DCHECK(canvas_);
78 canvas_->drawPicture(layer->picture().get());
79 }
80
81 void RenderLayerBuilder::DrawSavedLayer(
82 const std::shared_ptr<RenderLayer>& layer,
83 const SkRect& content_rect,
84 const SkPaint& paint) {
85 DCHECK(layer);
86 DCHECK(canvas_);
87 canvas_->saveLayer(content_rect, &paint);
88 canvas_->drawPicture(layer->picture().get());
89 canvas_->restore();
90 }
91
92 std::shared_ptr<RenderLayer> RenderLayerBuilder::Build() {
93 DCHECK(canvas_);
94 canvas_ = nullptr;
95 return std::make_shared<RenderLayer>(
96 skia::AdoptRef(recorder_.endRecordingAsPicture()));
97 }
98
99 } // namespace compositor
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