using System; using Unity.UIWidgets.foundation; using Unity.UIWidgets.gestures; using Unity.UIWidgets.scheduler2; using Unity.UIWidgets.ui; namespace Unity.UIWidgets.rendering { public class RendererBinding : SchedulerBinding { public new static RendererBinding instance { get { return (RendererBinding) SchedulerBinding.instance; } set { Window.instance._binding = value; } } protected override void initInstances() { base.initInstances(); instance = this; _pipelineOwner = new PipelineOwner( onNeedVisualUpdate: ensureVisualUpdate ); Window.instance.onMetricsChanged += handleMetricsChanged; Window.instance.onTextScaleFactorChanged += handleTextScaleFactorChanged; Window.instance.onPlatformBrightnessChanged += handlePlatformBrightnessChanged; initRenderView(); D.assert(renderView != null); addPersistentFrameCallback(_handlePersistentFrameCallback); initMouseTracker(); } public void initRenderView() { D.assert(renderView == null); renderView = new RenderView(configuration: createViewConfiguration()); renderView.prepareInitialFrame(); } public MouseTracker mouseTracker { get { return _mouseTracker; } } MouseTracker _mouseTracker; public PipelineOwner pipelineOwner { get { return _pipelineOwner; } } PipelineOwner _pipelineOwner; public RenderView renderView { get { return (RenderView) _pipelineOwner.rootNode; } set { _pipelineOwner.rootNode = value; } } protected virtual void handleMetricsChanged() { D.assert(renderView != null); renderView.configuration = createViewConfiguration(); scheduleForcedFrame(); } protected virtual void handleTextScaleFactorChanged() { } protected virtual void handlePlatformBrightnessChanged() { } protected virtual ViewConfiguration createViewConfiguration() { var devicePixelRatio = Window.instance.devicePixelRatio; return new ViewConfiguration( size: Window.instance.physicalSize / devicePixelRatio, devicePixelRatio: devicePixelRatio ); } public void initMouseTracker(MouseTracker tracker = null) { _mouseTracker?.dispose(); _mouseTracker = tracker ?? new MouseTracker(pointerRouter, renderView.hitTestMouseTrackers); } void _handlePersistentFrameCallback(TimeSpan timeStamp) { drawFrame(); _mouseTracker.schedulePostFrameCheck(); } int _firstFrameDeferredCount = 0; bool _firstFrameSent = false; bool sendFramesToEngine { get { return _firstFrameSent || _firstFrameDeferredCount == 0; } } void deferFirstFrame() { D.assert(_firstFrameDeferredCount >= 0); _firstFrameDeferredCount += 1; } void allowFirstFrame() { D.assert(_firstFrameDeferredCount > 0); _firstFrameDeferredCount -= 1; if (!_firstFrameSent) scheduleWarmUpFrame(); } void resetFirstFrameSent() { _firstFrameSent = false; } readonly protected bool inEditorWindow; /* MouseTracker _createMouseTracker() { return new MouseTracker(pointerRouter, (Offset offset) => { return renderView.layer.find( offset ); }, inEditorWindow); }*/ protected virtual void drawFrame() { D.assert(renderView != null); pipelineOwner.flushLayout(); pipelineOwner.flushCompositingBits(); pipelineOwner.flushPaint(); if (sendFramesToEngine) { renderView.compositeFrame(); _firstFrameSent = true; } } public override void hitTest(HitTestResult result, Offset position) { D.assert(renderView != null); renderView.hitTest(result, position: position); base.hitTest(result, position); } } }