TileView类图

run

Runnable

创建任务/队列

// this tile has been decoded by the time it gets passed here void addTileToCanvas( final Tile tile ) { if( mTilesInCurrentViewport.contains( tile ) ) { invalidate(); } }//这里会调用onDraw方法来进行具体的绘制过程

表示自己调用自己

COMPLETE

Tile

tileCanvasViewGroup = getTileCanvasViewGroup()

execute(TileRenderRunnable)

1. 通过使用MainLooper 切换线程

requestRender

mCoordinateTranslater

mTilesVisibleInViewport

setTile

TileCanvasViewGroup

DetailLevelChangeListener

渲染单个Tile: 这里渲染的意思是给该Tile对应的资源(Bitmap)加载到内存

mHotSpotManager

computeVisibleTilesFromViewport

OnGestureListener

FlatTileView

onRenderTaskPreExecute

mBitmapRecyclerReference.new

RENDER_ERROR

mDetailLevelManager

getTile()

ZoomPanLayout

TileRenderRunnable

获取渲染的handler

ZoomPanListener

beginRenderTask

queue

TileRenderHandler的渲染过程

tileRenderRunnable = (TileRenderRunnable) message.obj

ThreadPoolExecutor

mDetailLevelChangeListener

RENDER_COMPLETE

DetailLevel

DetailLevelManager

TileRenderPoolExecutor

OnTouchUpListener

tileCanvasViewGroup.handleTileRenderException

mPreviouslyDrawnTiles.size() 0

new

mTileRenderRunnableWeakReference.new

mThread = Thread.currentThread();

setTileRenderPoolExecutor

TileRenderRunnable执行分析

ViewGroup

renderTiles

TileCanvasViewGroup#onDraw分析

mLastStateSnapshot

-mTileWeakReference-mTileRenderPoolExecutorWeakReference-mCancelled-mComplete-mThread-mThrowable+renderTile

OnDoubleTapListener

drawTiles

onDraw

mDetailLevelLinkedList

TileView

记住当前的线程/用于后续状态的判断

Client

isShutdownOrTerminating

cleanup

KEEP_ALIVE_TIME=1NITIAL_POOL_SIZE = AVAILABLE_PROCESSORS 1;MAXIMUM_POOL_SIZE = AVAILABLE_PROCESSORS;

StateSnapshot

tile = tileRenderRunnable.getTile()

tileCanvasViewGroup.addTileToCanvas

HotSpotManager

renderTile()

drawTilesWithoutConsideringPreviouslyDrawnLevel

drawTilesConsideringPreviouslyDrawnLevel

OnScaleGestureListener

handleMessage

CoordinateTranslater

是否修改了状态

Y

computeCurrentState

status

TileRenderThrottleHandler

Handler/WeakReference

消息的处理

message.what

#mScale#mTileWidth#mTileHeight#mData+computeCurrentState+getVisibleTilesFromLastViewportComputation

TileRenderListener