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      1 /*
      2  * Copyright (C) 2013 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 #include <SkCanvas.h>
     18 #include <algorithm>
     19 
     20 #include <utils/Trace.h>
     21 
     22 #include "DamageAccumulator.h"
     23 #include "Debug.h"
     24 #include "DisplayList.h"
     25 #include "OpDumper.h"
     26 #include "RecordedOp.h"
     27 #include "RenderNode.h"
     28 #include "VectorDrawable.h"
     29 #include "renderthread/CanvasContext.h"
     30 
     31 namespace android {
     32 namespace uirenderer {
     33 
     34 DisplayList::DisplayList()
     35         : projectionReceiveIndex(-1)
     36         , stdAllocator(allocator)
     37         , chunks(stdAllocator)
     38         , ops(stdAllocator)
     39         , children(stdAllocator)
     40         , bitmapResources(stdAllocator)
     41         , pathResources(stdAllocator)
     42         , patchResources(stdAllocator)
     43         , paints(stdAllocator)
     44         , regions(stdAllocator)
     45         , referenceHolders(stdAllocator)
     46         , functors(stdAllocator)
     47         , vectorDrawables(stdAllocator) {}
     48 
     49 DisplayList::~DisplayList() {
     50     cleanupResources();
     51 }
     52 
     53 void DisplayList::cleanupResources() {
     54     if (CC_UNLIKELY(patchResources.size())) {
     55         ResourceCache& resourceCache = ResourceCache::getInstance();
     56         resourceCache.lock();
     57 
     58         for (size_t i = 0; i < patchResources.size(); i++) {
     59             resourceCache.decrementRefcountLocked(patchResources[i]);
     60         }
     61 
     62         resourceCache.unlock();
     63     }
     64 
     65     for (size_t i = 0; i < pathResources.size(); i++) {
     66         const SkPath* path = pathResources[i];
     67         if (path->unique() && Caches::hasInstance()) {
     68             Caches::getInstance().pathCache.removeDeferred(path);
     69         }
     70         delete path;
     71     }
     72 
     73     for (auto& iter : functors) {
     74         if (iter.listener) {
     75             iter.listener->onGlFunctorReleased(iter.functor);
     76         }
     77     }
     78 
     79     patchResources.clear();
     80     pathResources.clear();
     81     paints.clear();
     82     regions.clear();
     83 }
     84 
     85 size_t DisplayList::addChild(NodeOpType* op) {
     86     referenceHolders.push_back(op->renderNode);
     87     size_t index = children.size();
     88     children.push_back(op);
     89     return index;
     90 }
     91 
     92 void DisplayList::syncContents() {
     93     for (auto& iter : functors) {
     94         (*iter.functor)(DrawGlInfo::kModeSync, nullptr);
     95     }
     96     for (auto& vectorDrawable : vectorDrawables) {
     97         vectorDrawable->syncProperties();
     98     }
     99 }
    100 
    101 void DisplayList::updateChildren(std::function<void(RenderNode*)> updateFn) {
    102     for (auto&& child : children) {
    103         updateFn(child->renderNode);
    104     }
    105 }
    106 
    107 bool DisplayList::prepareListAndChildren(
    108         TreeObserver& observer, TreeInfo& info, bool functorsNeedLayer,
    109         std::function<void(RenderNode*, TreeObserver&, TreeInfo&, bool)> childFn) {
    110     info.prepareTextures = info.canvasContext.pinImages(bitmapResources);
    111 
    112     for (auto&& op : children) {
    113         RenderNode* childNode = op->renderNode;
    114         info.damageAccumulator->pushTransform(&op->localMatrix);
    115         bool childFunctorsNeedLayer =
    116                 functorsNeedLayer;  // TODO! || op->mRecordedWithPotentialStencilClip;
    117         childFn(childNode, observer, info, childFunctorsNeedLayer);
    118         info.damageAccumulator->popTransform();
    119     }
    120 
    121     bool isDirty = false;
    122     for (auto& vectorDrawable : vectorDrawables) {
    123         // If any vector drawable in the display list needs update, damage the node.
    124         if (vectorDrawable->isDirty()) {
    125             isDirty = true;
    126         }
    127         vectorDrawable->setPropertyChangeWillBeConsumed(true);
    128     }
    129     return isDirty;
    130 }
    131 
    132 void DisplayList::output(std::ostream& output, uint32_t level) {
    133     for (auto&& op : getOps()) {
    134         OpDumper::dump(*op, output, level + 1);
    135         if (op->opId == RecordedOpId::RenderNodeOp) {
    136             auto rnOp = reinterpret_cast<const RenderNodeOp*>(op);
    137             rnOp->renderNode->output(output, level + 1);
    138         } else {
    139             output << std::endl;
    140         }
    141     }
    142 }
    143 
    144 };  // namespace uirenderer
    145 };  // namespace android
    146