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      1 /*
      2  * Copyright (C) 2018 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 "GlFunctorLifecycleListener.h"
     20 
     21 #include <SkCanvas.h>
     22 #include <SkDrawable.h>
     23 
     24 #include <WebViewFunctorManager.h>
     25 #include <utils/Functor.h>
     26 #include <variant>
     27 
     28 namespace android {
     29 namespace uirenderer {
     30 
     31 namespace skiapipeline {
     32 
     33 /**
     34  * This drawable wraps a functor enabling it to be recorded into a list
     35  * of Skia drawing commands.
     36  */
     37 class FunctorDrawable : public SkDrawable {
     38 public:
     39     FunctorDrawable(Functor* functor, GlFunctorLifecycleListener* listener, SkCanvas* canvas)
     40             : mBounds(canvas->getLocalClipBounds())
     41             , mAnyFunctor(std::in_place_type<LegacyFunctor>, functor, listener) {}
     42 
     43     FunctorDrawable(int functor, SkCanvas* canvas)
     44             : mBounds(canvas->getLocalClipBounds())
     45             , mAnyFunctor(std::in_place_type<NewFunctor>, functor) {}
     46 
     47     virtual ~FunctorDrawable() {}
     48 
     49     virtual void syncFunctor(const WebViewSyncData& data) const {
     50         if (mAnyFunctor.index() == 0) {
     51             std::get<0>(mAnyFunctor).handle->sync(data);
     52         } else {
     53             (*(std::get<1>(mAnyFunctor).functor))(DrawGlInfo::kModeSync, nullptr);
     54         }
     55     }
     56 
     57 protected:
     58     virtual SkRect onGetBounds() override { return mBounds; }
     59 
     60     const SkRect mBounds;
     61 
     62     struct LegacyFunctor {
     63         explicit LegacyFunctor(Functor* functor, GlFunctorLifecycleListener* listener)
     64                 : functor(functor), listener(listener) {}
     65         Functor* functor;
     66         sp<GlFunctorLifecycleListener> listener;
     67     };
     68 
     69     struct NewFunctor {
     70         explicit NewFunctor(int functor) {
     71             handle = WebViewFunctorManager::instance().handleFor(functor);
     72         }
     73         sp<WebViewFunctor::Handle> handle;
     74     };
     75 
     76     std::variant<NewFunctor, LegacyFunctor> mAnyFunctor;
     77 };
     78 
     79 }  // namespace skiapipeline
     80 }  // namespace uirenderer
     81 }  // namespace android
     82