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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 
     50 DisplayList::~DisplayList() {
     51     cleanupResources();
     52 }
     53 
     54 void DisplayList::cleanupResources() {
     55     if (CC_UNLIKELY(patchResources.size())) {
     56         ResourceCache& resourceCache = ResourceCache::getInstance();
     57         resourceCache.lock();
     58 
     59         for (size_t i = 0; i < patchResources.size(); i++) {
     60             resourceCache.decrementRefcountLocked(patchResources[i]);
     61         }
     62 
     63         resourceCache.unlock();
     64     }
     65 
     66     for (size_t i = 0; i < pathResources.size(); i++) {
     67         const SkPath* path = pathResources[i];
     68         if (path->unique() && Caches::hasInstance()) {
     69             Caches::getInstance().pathCache.removeDeferred(path);
     70         }
     71         delete path;
     72     }
     73 
     74     for (auto& iter : functors) {
     75         if (iter.listener) {
     76             iter.listener->onGlFunctorReleased(iter.functor);
     77         }
     78     }
     79 
     80     patchResources.clear();
     81     pathResources.clear();
     82     paints.clear();
     83     regions.clear();
     84 }
     85 
     86 size_t DisplayList::addChild(NodeOpType* op) {
     87     referenceHolders.push_back(op->renderNode);
     88     size_t index = children.size();
     89     children.push_back(op);
     90     return index;
     91 }
     92 
     93 void DisplayList::syncContents() {
     94     for (auto& iter : functors) {
     95         (*iter.functor)(DrawGlInfo::kModeSync, nullptr);
     96     }
     97     for (auto& vectorDrawable : vectorDrawables) {
     98         vectorDrawable->syncProperties();
     99     }
    100 }
    101 
    102 void DisplayList::updateChildren(std::function<void(RenderNode*)> updateFn) {
    103     for (auto&& child : children) {
    104         updateFn(child->renderNode);
    105     }
    106 }
    107 
    108 bool DisplayList::prepareListAndChildren(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 = functorsNeedLayer; // TODO! || op->mRecordedWithPotentialStencilClip;
    116         childFn(childNode, observer, info, childFunctorsNeedLayer);
    117         info.damageAccumulator->popTransform();
    118     }
    119 
    120     bool isDirty = false;
    121     for (auto& vectorDrawable : vectorDrawables) {
    122         // If any vector drawable in the display list needs update, damage the node.
    123         if (vectorDrawable->isDirty()) {
    124             isDirty = true;
    125         }
    126         vectorDrawable->setPropertyChangeWillBeConsumed(true);
    127     }
    128     return isDirty;
    129 }
    130 
    131 void DisplayList::output(std::ostream& output, uint32_t level) {
    132     for (auto&& op : getOps()) {
    133         OpDumper::dump(*op, output, level + 1);
    134         if (op->opId == RecordedOpId::RenderNodeOp) {
    135             auto rnOp = reinterpret_cast<const RenderNodeOp*>(op);
    136             rnOp->renderNode->output(output, level + 1);
    137         } else {
    138             output << std::endl;
    139         }
    140     }
    141 }
    142 
    143 }; // namespace uirenderer
    144 }; // namespace android
    145