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1 /*
2  * Copyright (C) 2017 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #pragma once
18 
19 #include "RenderNode.h"
20 #include "SkiaDisplayList.h"
21 
22 namespace android {
23 namespace uirenderer {
24 namespace skiapipeline {
25 
26 /**
27  * DumpOpsCanvas prints drawing ops from a SkiaDisplayList into a std::ostream. Children render
28  * nodes are walked recursively and their drawing ops are printed as well.
29  */
30 class DumpOpsCanvas : public SkCanvas {
31 public:
DumpOpsCanvas(std::ostream & output,int level,const SkiaDisplayList & displayList)32     DumpOpsCanvas(std::ostream& output, int level, const SkiaDisplayList& displayList)
33             : mOutput(output)
34             , mLevel(level)
35             , mDisplayList(displayList)
36             , mIdent((level + 1) * 2, ' ') {}
37 
38 protected:
onClipRect(const SkRect & rect,SkClipOp,ClipEdgeStyle)39     void onClipRect(const SkRect& rect, SkClipOp, ClipEdgeStyle) override {
40         mOutput << mIdent << "clipRect" << std::endl;
41     }
42 
onClipRRect(const SkRRect & rrect,SkClipOp,ClipEdgeStyle)43     void onClipRRect(const SkRRect& rrect, SkClipOp, ClipEdgeStyle) override {
44         mOutput << mIdent << "clipRRect" << std::endl;
45     }
46 
onClipPath(const SkPath & path,SkClipOp,ClipEdgeStyle)47     void onClipPath(const SkPath& path, SkClipOp, ClipEdgeStyle) override {
48         mOutput << mIdent << "clipPath" << std::endl;
49     }
50 
onClipRegion(const SkRegion & deviceRgn,SkClipOp)51     void onClipRegion(const SkRegion& deviceRgn, SkClipOp) override {
52         mOutput << mIdent << "clipRegion" << std::endl;
53     }
54 
onDrawPaint(const SkPaint &)55     void onDrawPaint(const SkPaint&) override { mOutput << mIdent << "drawPaint" << std::endl; }
56 
onDrawPath(const SkPath &,const SkPaint &)57     void onDrawPath(const SkPath&, const SkPaint&) override {
58         mOutput << mIdent << "drawPath" << std::endl;
59     }
60 
onDrawRect(const SkRect &,const SkPaint &)61     void onDrawRect(const SkRect&, const SkPaint&) override {
62         mOutput << mIdent << "drawRect" << std::endl;
63     }
64 
onDrawRegion(const SkRegion &,const SkPaint &)65     void onDrawRegion(const SkRegion&, const SkPaint&) override {
66         mOutput << mIdent << "drawRegion" << std::endl;
67     }
68 
onDrawOval(const SkRect &,const SkPaint &)69     void onDrawOval(const SkRect&, const SkPaint&) override {
70         mOutput << mIdent << "drawOval" << std::endl;
71     }
72 
onDrawArc(const SkRect &,SkScalar,SkScalar,bool,const SkPaint &)73     void onDrawArc(const SkRect&, SkScalar, SkScalar, bool, const SkPaint&) override {
74         mOutput << mIdent << "drawArc" << std::endl;
75     }
76 
onDrawRRect(const SkRRect &,const SkPaint &)77     void onDrawRRect(const SkRRect&, const SkPaint&) override {
78         mOutput << mIdent << "drawRRect" << std::endl;
79     }
80 
onDrawDRRect(const SkRRect &,const SkRRect &,const SkPaint &)81     void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) override {
82         mOutput << mIdent << "drawDRRect" << std::endl;
83     }
84 
onDrawTextBlob(const SkTextBlob *,SkScalar,SkScalar,const SkPaint &)85     void onDrawTextBlob(const SkTextBlob*, SkScalar, SkScalar, const SkPaint&) override {
86         mOutput << mIdent << "drawTextBlob" << std::endl;
87     }
88 
onDrawImage2(const SkImage *,SkScalar dx,SkScalar dy,const SkSamplingOptions &,const SkPaint *)89     void onDrawImage2(const SkImage*, SkScalar dx, SkScalar dy, const SkSamplingOptions&,
90                       const SkPaint*) override {
91         mOutput << mIdent << "drawImage" << std::endl;
92     }
93 
onDrawImageRect2(const SkImage *,const SkRect &,const SkRect &,const SkSamplingOptions &,const SkPaint *,SrcRectConstraint)94     void onDrawImageRect2(const SkImage*, const SkRect&, const SkRect&, const SkSamplingOptions&,
95                           const SkPaint*, SrcRectConstraint) override {
96         mOutput << mIdent << "drawImageRect" << std::endl;
97     }
98 
onDrawImageLattice2(const SkImage *,const Lattice & lattice,const SkRect & dst,SkFilterMode,const SkPaint *)99     void onDrawImageLattice2(const SkImage*, const Lattice& lattice, const SkRect& dst,
100                              SkFilterMode, const SkPaint*) override {
101         mOutput << mIdent << "drawImageLattice" << std::endl;
102     }
103 
onDrawPoints(SkCanvas::PointMode,size_t,const SkPoint[],const SkPaint &)104     void onDrawPoints(SkCanvas::PointMode, size_t, const SkPoint[], const SkPaint&) override {
105         mOutput << mIdent << "drawPoints" << std::endl;
106     }
107 
onDrawPicture(const SkPicture *,const SkMatrix *,const SkPaint *)108     void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override {
109         mOutput << mIdent << "drawPicture" << std::endl;
110     }
111 
onDrawDrawable(SkDrawable * drawable,const SkMatrix *)112     void onDrawDrawable(SkDrawable* drawable, const SkMatrix*) override {
113         mOutput << mIdent;
114         auto renderNodeDrawable = getRenderNodeDrawable(drawable);
115         if (nullptr != renderNodeDrawable) {
116             mOutput << std::string(mLevel * 2, ' ') << "drawRenderNode";
117             renderNodeDrawable->getRenderNode()->output(mOutput, mLevel + 1);
118             return;
119         }
120         auto glFunctorDrawable = getFunctorDrawable(drawable);
121         if (nullptr != glFunctorDrawable) {
122             mOutput << std::string(mLevel * 2, ' ') << "drawGLFunctorDrawable" << std::endl;
123             return;
124         }
125 
126         mOutput << std::string(mLevel * 2, ' ') << "drawDrawable" << std::endl;
127     }
128 
129 private:
getRenderNodeDrawable(SkDrawable * drawable)130     const RenderNodeDrawable* getRenderNodeDrawable(SkDrawable* drawable) {
131         for (auto& child : mDisplayList.mChildNodes) {
132             if (drawable == &child) {
133                 return &child;
134             }
135         }
136         return nullptr;
137     }
138 
getFunctorDrawable(SkDrawable * drawable)139     FunctorDrawable* getFunctorDrawable(SkDrawable* drawable) {
140         for (auto& child : mDisplayList.mChildFunctors) {
141             if (drawable == child) {
142                 return child;
143             }
144         }
145         return nullptr;
146     }
147 
148     std::ostream& mOutput;
149     int mLevel;
150     const SkiaDisplayList& mDisplayList;
151     std::string mIdent;
152 };
153 
154 }  // namespace skiapipeline
155 }  // namespace uirenderer
156 }  // namespace android
157