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,SkiaDisplayList & displayList)32     DumpOpsCanvas(std::ostream& output, int level, 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 
onDrawImage(const SkImage *,SkScalar dx,SkScalar dy,const SkPaint *)89     void onDrawImage(const SkImage*, SkScalar dx, SkScalar dy, const SkPaint*) override {
90         mOutput << mIdent << "drawImage" << std::endl;
91     }
92 
onDrawImageNine(const SkImage *,const SkIRect & center,const SkRect & dst,const SkPaint *)93     void onDrawImageNine(const SkImage*, const SkIRect& center, const SkRect& dst,
94                          const SkPaint*) override {
95         mOutput << mIdent << "drawImageNine" << std::endl;
96     }
97 
onDrawImageRect(const SkImage *,const SkRect *,const SkRect &,const SkPaint *,SrcRectConstraint)98     void onDrawImageRect(const SkImage*, const SkRect*, const SkRect&, const SkPaint*,
99                          SrcRectConstraint) override {
100         mOutput << mIdent << "drawImageRect" << std::endl;
101     }
102 
onDrawImageLattice(const SkImage *,const Lattice & lattice,const SkRect & dst,const SkPaint *)103     void onDrawImageLattice(const SkImage*, const Lattice& lattice, const SkRect& dst,
104                             const SkPaint*) override {
105         mOutput << mIdent << "drawImageLattice" << std::endl;
106     }
107 
onDrawPoints(SkCanvas::PointMode,size_t,const SkPoint[],const SkPaint &)108     void onDrawPoints(SkCanvas::PointMode, size_t, const SkPoint[], const SkPaint&) override {
109         mOutput << mIdent << "drawPoints" << std::endl;
110     }
111 
onDrawPicture(const SkPicture *,const SkMatrix *,const SkPaint *)112     void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override {
113         mOutput << mIdent << "drawPicture" << std::endl;
114     }
115 
onDrawDrawable(SkDrawable * drawable,const SkMatrix *)116     void onDrawDrawable(SkDrawable* drawable, const SkMatrix*) override {
117         mOutput << mIdent;
118         auto renderNodeDrawable = getRenderNodeDrawable(drawable);
119         if (nullptr != renderNodeDrawable) {
120             mOutput << std::string(mLevel * 2, ' ') << "drawRenderNode";
121             renderNodeDrawable->getRenderNode()->output(mOutput, mLevel + 1);
122             return;
123         }
124         auto glFunctorDrawable = getFunctorDrawable(drawable);
125         if (nullptr != glFunctorDrawable) {
126             mOutput << std::string(mLevel * 2, ' ') << "drawGLFunctorDrawable" << std::endl;
127             return;
128         }
129 
130         mOutput << std::string(mLevel * 2, ' ') << "drawDrawable" << std::endl;
131     }
132 
133 private:
getRenderNodeDrawable(SkDrawable * drawable)134     RenderNodeDrawable* getRenderNodeDrawable(SkDrawable* drawable) {
135         for (auto& child : mDisplayList.mChildNodes) {
136             if (drawable == &child) {
137                 return &child;
138             }
139         }
140         return nullptr;
141     }
142 
getFunctorDrawable(SkDrawable * drawable)143     FunctorDrawable* getFunctorDrawable(SkDrawable* drawable) {
144         for (auto& child : mDisplayList.mChildFunctors) {
145             if (drawable == child) {
146                 return child;
147             }
148         }
149         return nullptr;
150     }
151 
152     std::ostream& mOutput;
153     int mLevel;
154     SkiaDisplayList& mDisplayList;
155     std::string mIdent;
156 };
157 
158 }  // namespace skiapipeline
159 }  // namespace uirenderer
160 }  // namespace android
161