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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define ATRACE_TAG ATRACE_TAG_VIEW
#include "DrawFrameTask.h"
#include <utils/Log.h>
#include <utils/Trace.h>
#include "../DisplayList.h"
#include "../RenderNode.h"
#include "CanvasContext.h"
#include "RenderThread.h"
namespace android {
namespace uirenderer {
namespace renderthread {
SetDisplayListData::SetDisplayListData() : mNewData(0) {}
SetDisplayListData::SetDisplayListData(RenderNode* node, DisplayListData* newData)
: mTargetNode(node), mNewData(newData) {
}
SetDisplayListData::~SetDisplayListData() {}
void SetDisplayListData::apply() const {
mTargetNode->setData(mNewData);
}
DrawFrameTask::DrawFrameTask() : mContext(0), mTaskMode(MODE_INVALID), mRenderNode(0) {
}
DrawFrameTask::~DrawFrameTask() {
}
void DrawFrameTask::setContext(CanvasContext* context) {
mContext = context;
}
void DrawFrameTask::setDisplayListData(RenderNode* renderNode, DisplayListData* newData) {
LOG_ALWAYS_FATAL_IF(!mContext, "Lifecycle violation, there's no context to setDisplayListData with!");
SetDisplayListData setter(renderNode, newData);
mDisplayListDataUpdates.push(setter);
}
void DrawFrameTask::addLayer(DeferredLayerUpdater* layer) {
LOG_ALWAYS_FATAL_IF(!mContext, "Lifecycle violation, there's no context to addLayer with!");
mLayers.push(layer);
}
void DrawFrameTask::removeLayer(DeferredLayerUpdater* layer) {
for (size_t i = 0; i < mLayers.size(); i++) {
if (mLayers[i] == layer) {
mLayers.removeAt(i);
break;
}
}
}
void DrawFrameTask::setRenderNode(RenderNode* renderNode) {
LOG_ALWAYS_FATAL_IF(!mContext, "Lifecycle violation, there's no context to setRenderNode with!");
mRenderNode = renderNode;
}
void DrawFrameTask::setDirty(int left, int top, int right, int bottom) {
mDirty.set(left, top, right, bottom);
}
void DrawFrameTask::drawFrame(RenderThread* renderThread) {
LOG_ALWAYS_FATAL_IF(!mRenderNode.get(), "Cannot drawFrame with no render node!");
LOG_ALWAYS_FATAL_IF(!mContext, "Cannot drawFrame with no CanvasContext!");
postAndWait(renderThread, MODE_FULL);
// Reset the single-frame data
mDirty.setEmpty();
mRenderNode = 0;
}
void DrawFrameTask::flushStateChanges(RenderThread* renderThread) {
LOG_ALWAYS_FATAL_IF(!mContext, "Cannot drawFrame with no CanvasContext!");
postAndWait(renderThread, MODE_STATE_ONLY);
}
void DrawFrameTask::postAndWait(RenderThread* renderThread, TaskMode mode) {
LOG_ALWAYS_FATAL_IF(mode == MODE_INVALID, "That's not a real mode, silly!");
mTaskMode = mode;
AutoMutex _lock(mLock);
renderThread->queue(this);
mSignal.wait(mLock);
}
void DrawFrameTask::run() {
ATRACE_NAME("DrawFrame");
syncFrameState();
if (mTaskMode == MODE_STATE_ONLY) {
unblockUiThread();
return;
}
// Grab a copy of everything we need
Rect dirtyCopy(mDirty);
sp<RenderNode> renderNode = mRenderNode;
CanvasContext* context = mContext;
// This is temporary until WebView has a solution for syncing frame state
bool canUnblockUiThread = !requiresSynchronousDraw(renderNode.get());
// From this point on anything in "this" is *UNSAFE TO ACCESS*
if (canUnblockUiThread) {
unblockUiThread();
}
drawRenderNode(context, renderNode.get(), &dirtyCopy);
if (!canUnblockUiThread) {
unblockUiThread();
}
}
void DrawFrameTask::syncFrameState() {
ATRACE_CALL();
for (size_t i = 0; i < mDisplayListDataUpdates.size(); i++) {
const SetDisplayListData& setter = mDisplayListDataUpdates[i];
setter.apply();
}
mDisplayListDataUpdates.clear();
mContext->processLayerUpdates(&mLayers);
// If we don't have an mRenderNode this is a state flush only
if (mRenderNode.get()) {
mRenderNode->updateProperties();
}
}
void DrawFrameTask::unblockUiThread() {
AutoMutex _lock(mLock);
mSignal.signal();
}
void DrawFrameTask::drawRenderNode(CanvasContext* context, RenderNode* renderNode, Rect* dirty) {
ATRACE_CALL();
if (dirty->bottom == -1 && dirty->left == -1
&& dirty->top == -1 && dirty->right == -1) {
dirty = 0;
}
context->drawDisplayList(renderNode, dirty);
}
bool DrawFrameTask::requiresSynchronousDraw(RenderNode* renderNode) {
return renderNode->hasFunctors();
}
} /* namespace renderthread */
} /* namespace uirenderer */
} /* namespace android */
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