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 class SkRRect;
23 
24 namespace android {
25 namespace uirenderer {
26 namespace skiapipeline {
27 
28 /**
29  * DumpOpsCanvas prints drawing ops from a SkiaDisplayList into a std::ostream. Children render
30  * nodes are walked recursively and their drawing ops are printed as well.
31  */
32 class DumpOpsCanvas : public SkCanvas {
33 public:
DumpOpsCanvas(std::ostream & output,int level,const SkiaDisplayList & displayList)34     DumpOpsCanvas(std::ostream& output, int level, const SkiaDisplayList& displayList)
35             : mOutput(output)
36             , mLevel(level)
37             , mDisplayList(displayList)
38             , mIdent((level + 1) * 2, ' ') {}
39 
40 protected:
onClipRect(const SkRect & rect,SkClipOp,ClipEdgeStyle)41     void onClipRect(const SkRect& rect, SkClipOp, ClipEdgeStyle) override {
42         mOutput << mIdent << "clipRect" << std::endl;
43     }
44 
onClipRRect(const SkRRect & rrect,SkClipOp,ClipEdgeStyle)45     void onClipRRect(const SkRRect& rrect, SkClipOp, ClipEdgeStyle) override {
46         mOutput << mIdent << "clipRRect" << std::endl;
47     }
48 
onClipPath(const SkPath & path,SkClipOp,ClipEdgeStyle)49     void onClipPath(const SkPath& path, SkClipOp, ClipEdgeStyle) override {
50         mOutput << mIdent << "clipPath" << std::endl;
51     }
52 
onClipRegion(const SkRegion & deviceRgn,SkClipOp)53     void onClipRegion(const SkRegion& deviceRgn, SkClipOp) override {
54         mOutput << mIdent << "clipRegion" << std::endl;
55     }
56 
onResetClip()57     void onResetClip() override { mOutput << mIdent << "resetClip" << std::endl; }
58 
onDrawPaint(const SkPaint &)59     void onDrawPaint(const SkPaint&) override { mOutput << mIdent << "drawPaint" << std::endl; }
60 
onDrawPath(const SkPath &,const SkPaint &)61     void onDrawPath(const SkPath&, const SkPaint&) override {
62         mOutput << mIdent << "drawPath" << std::endl;
63     }
64 
onDrawRect(const SkRect &,const SkPaint &)65     void onDrawRect(const SkRect&, const SkPaint&) override {
66         mOutput << mIdent << "drawRect" << std::endl;
67     }
68 
onDrawRegion(const SkRegion &,const SkPaint &)69     void onDrawRegion(const SkRegion&, const SkPaint&) override {
70         mOutput << mIdent << "drawRegion" << std::endl;
71     }
72 
onDrawOval(const SkRect &,const SkPaint &)73     void onDrawOval(const SkRect&, const SkPaint&) override {
74         mOutput << mIdent << "drawOval" << std::endl;
75     }
76 
onDrawArc(const SkRect &,SkScalar,SkScalar,bool,const SkPaint &)77     void onDrawArc(const SkRect&, SkScalar, SkScalar, bool, const SkPaint&) override {
78         mOutput << mIdent << "drawArc" << std::endl;
79     }
80 
onDrawRRect(const SkRRect &,const SkPaint &)81     void onDrawRRect(const SkRRect&, const SkPaint&) override {
82         mOutput << mIdent << "drawRRect" << std::endl;
83     }
84 
onDrawDRRect(const SkRRect &,const SkRRect &,const SkPaint &)85     void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) override {
86         mOutput << mIdent << "drawDRRect" << std::endl;
87     }
88 
onDrawTextBlob(const SkTextBlob *,SkScalar,SkScalar,const SkPaint &)89     void onDrawTextBlob(const SkTextBlob*, SkScalar, SkScalar, const SkPaint&) override {
90         mOutput << mIdent << "drawTextBlob" << std::endl;
91     }
92 
onDrawImageRect2(const SkImage *,const SkRect &,const SkRect &,const SkSamplingOptions &,const SkPaint *,SrcRectConstraint)93     void onDrawImageRect2(const SkImage*, const SkRect&, const SkRect&, const SkSamplingOptions&,
94                           const SkPaint*, SrcRectConstraint) override {
95         mOutput << mIdent << "drawImageRect" << std::endl;
96     }
97 
onDrawImageLattice2(const SkImage *,const Lattice & lattice,const SkRect & dst,SkFilterMode,const SkPaint *)98     void onDrawImageLattice2(const SkImage*, const Lattice& lattice, const SkRect& dst,
99                              SkFilterMode, const SkPaint*) override {
100         mOutput << mIdent << "drawImageLattice" << std::endl;
101     }
102 
onDrawPoints(SkCanvas::PointMode,size_t,const SkPoint[],const SkPaint &)103     void onDrawPoints(SkCanvas::PointMode, size_t, const SkPoint[], const SkPaint&) override {
104         mOutput << mIdent << "drawPoints" << std::endl;
105     }
106 
onDrawPicture(const SkPicture *,const SkMatrix *,const SkPaint *)107     void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override {
108         mOutput << mIdent << "drawPicture" << std::endl;
109     }
110 
onDrawDrawable(SkDrawable * drawable,const SkMatrix *)111     void onDrawDrawable(SkDrawable* drawable, const SkMatrix*) override {
112         mOutput << mIdent;
113         auto renderNodeDrawable = getRenderNodeDrawable(drawable);
114         if (nullptr != renderNodeDrawable) {
115             mOutput << std::string(mLevel * 2, ' ') << "drawRenderNode";
116             renderNodeDrawable->getRenderNode()->output(mOutput, mLevel + 1);
117             return;
118         }
119         auto glFunctorDrawable = getFunctorDrawable(drawable);
120         if (nullptr != glFunctorDrawable) {
121             mOutput << std::string(mLevel * 2, ' ') << "drawGLFunctorDrawable" << std::endl;
122             return;
123         }
124 
125         mOutput << std::string(mLevel * 2, ' ') << "drawDrawable" << std::endl;
126     }
127 
128 private:
getRenderNodeDrawable(SkDrawable * drawable)129     const RenderNodeDrawable* getRenderNodeDrawable(SkDrawable* drawable) {
130         for (auto& child : mDisplayList.mChildNodes) {
131             if (drawable == &child) {
132                 return &child;
133             }
134         }
135         return nullptr;
136     }
137 
getFunctorDrawable(SkDrawable * drawable)138     FunctorDrawable* getFunctorDrawable(SkDrawable* drawable) {
139         for (auto& child : mDisplayList.mChildFunctors) {
140             if (drawable == child) {
141                 return child;
142             }
143         }
144         return nullptr;
145     }
146 
147     std::ostream& mOutput;
148     int mLevel;
149     const SkiaDisplayList& mDisplayList;
150     std::string mIdent;
151 };
152 
153 }  // namespace skiapipeline
154 }  // namespace uirenderer
155 }  // namespace android
156