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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:
     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:
     39     void onClipRect(const SkRect& rect, SkClipOp, ClipEdgeStyle) override {
     40         mOutput << mIdent << "clipRect" << std::endl;
     41     }
     42 
     43     void onClipRRect(const SkRRect& rrect, SkClipOp, ClipEdgeStyle) override {
     44         mOutput << mIdent << "clipRRect" << std::endl;
     45     }
     46 
     47     void onClipPath(const SkPath& path, SkClipOp, ClipEdgeStyle) override {
     48         mOutput << mIdent << "clipPath" << std::endl;
     49     }
     50 
     51     void onClipRegion(const SkRegion& deviceRgn, SkClipOp) override {
     52         mOutput << mIdent << "clipRegion" << std::endl;
     53     }
     54 
     55     void onDrawPaint(const SkPaint&) override { mOutput << mIdent << "drawPaint" << std::endl; }
     56 
     57     void onDrawPath(const SkPath&, const SkPaint&) override {
     58         mOutput << mIdent << "drawPath" << std::endl;
     59     }
     60 
     61     void onDrawRect(const SkRect&, const SkPaint&) override {
     62         mOutput << mIdent << "drawRect" << std::endl;
     63     }
     64 
     65     void onDrawRegion(const SkRegion&, const SkPaint&) override {
     66         mOutput << mIdent << "drawRegion" << std::endl;
     67     }
     68 
     69     void onDrawOval(const SkRect&, const SkPaint&) override {
     70         mOutput << mIdent << "drawOval" << std::endl;
     71     }
     72 
     73     void onDrawArc(const SkRect&, SkScalar, SkScalar, bool, const SkPaint&) override {
     74         mOutput << mIdent << "drawArc" << std::endl;
     75     }
     76 
     77     void onDrawRRect(const SkRRect&, const SkPaint&) override {
     78         mOutput << mIdent << "drawRRect" << std::endl;
     79     }
     80 
     81     void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&) override {
     82         mOutput << mIdent << "drawDRRect" << std::endl;
     83     }
     84 
     85     void onDrawTextBlob(const SkTextBlob*, SkScalar, SkScalar, const SkPaint&) override {
     86         mOutput << mIdent << "drawTextBlob" << std::endl;
     87     }
     88 
     89     void onDrawImage(const SkImage*, SkScalar dx, SkScalar dy, const SkPaint*) override {
     90         mOutput << mIdent << "drawImage" << std::endl;
     91     }
     92 
     93     void onDrawImageNine(const SkImage*, const SkIRect& center, const SkRect& dst,
     94                          const SkPaint*) override {
     95         mOutput << mIdent << "drawImageNine" << std::endl;
     96     }
     97 
     98     void onDrawImageRect(const SkImage*, const SkRect*, const SkRect&, const SkPaint*,
     99                          SrcRectConstraint) override {
    100         mOutput << mIdent << "drawImageRect" << std::endl;
    101     }
    102 
    103     void onDrawImageLattice(const SkImage*, const Lattice& lattice, const SkRect& dst,
    104                             const SkPaint*) override {
    105         mOutput << mIdent << "drawImageLattice" << std::endl;
    106     }
    107 
    108     void onDrawPoints(SkCanvas::PointMode, size_t, const SkPoint[], const SkPaint&) override {
    109         mOutput << mIdent << "drawPoints" << std::endl;
    110     }
    111 
    112     void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override {
    113         mOutput << mIdent << "drawPicture" << std::endl;
    114     }
    115 
    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:
    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 
    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