public ScrollPositionWithSingleContext( ScrollPhysics physics = null, ScrollContext context = null, float?initialPixels = 0.0f, bool keepScrollOffset = true, ScrollPosition oldPosition = null, string debugLabel = null ) : base( physics: physics, context: context, keepScrollOffset: keepScrollOffset, oldPosition: oldPosition, debugLabel: debugLabel ) { if (this._pixels == null && initialPixels != null) { this.correctPixels(initialPixels.Value); } if (this.activity == null) { this.goIdle(); } D.assert(this.activity != null); }
protected ScrollPosition( ScrollPhysics physics = null, ScrollContext context = null, bool keepScrollOffset = true, ScrollPosition oldPosition = null, string debugLabel = null ) { D.assert(physics != null); D.assert(context != null); D.assert(context.vsync != null); this.physics = physics; this.context = context; this.keepScrollOffset = keepScrollOffset; this.debugLabel = debugLabel; if (oldPosition != null) { this.absorb(oldPosition); } if (keepScrollOffset) { this.restoreScrollOffset(); } }
public override ScrollPosition createScrollPosition(ScrollPhysics physics, ScrollContext context, ScrollPosition oldPosition) { return(new _FixedExtentScrollPosition( physics: physics, context: context, initialItem: this.initialItem, oldPosition: oldPosition )); }
public override ScrollPosition createScrollPosition(ScrollPhysics physics, ScrollContext context, ScrollPosition oldPosition) { return(new _TabBarScrollPosition( physics: physics, context: context, oldPosition: oldPosition, tabBar: this.tabBar )); }
public override ScrollPosition createScrollPosition(ScrollPhysics physics, ScrollContext context, ScrollPosition oldPosition) { return(new _PagePosition( physics: physics, context: context, initialPage: this.initialPage, keepPage: this.keepPage, viewportFraction: this.viewportFraction, oldPosition: oldPosition )); }
public override ScrollPosition createScrollPosition( ScrollPhysics physics, ScrollContext context, ScrollPosition oldPosition ) { return(new _DraggableScrollableSheetScrollPosition( physics: physics, context: context, oldPosition: oldPosition, extent: extent )); }
public _TabBarScrollPosition( ScrollPhysics physics = null, ScrollContext context = null, ScrollPosition oldPosition = null, _TabBarState tabBar = null ) : base( physics: physics, context: context, initialPixels: null, oldPosition: oldPosition) { this.tabBar = tabBar; }
public TestScrollPositionWithSingleContext( ScrollPhysics physics = null, ScrollContext context = null, float?initialPixels = 0.0f, bool keepScrollOffset = true, ScrollPosition oldPosition = null, string debugLabel = null ) : base(physics: physics, context: context, keepScrollOffset: keepScrollOffset, oldPosition: oldPosition, debugLabel: debugLabel) { }
public virtual ScrollPosition createScrollPosition( ScrollPhysics physics, ScrollContext context, ScrollPosition oldPosition ) { return(new ScrollPositionWithSingleContext( physics: physics, context: context, initialPixels: this.initialScrollOffset, keepScrollOffset: this.keepScrollOffset, oldPosition: oldPosition, debugLabel: this.debugLabel )); }
public _DraggableScrollableSheetScrollPosition( ScrollPhysics physics = null, ScrollContext context = null, float initialPixels = 0.0f, bool keepScrollOffset = true, ScrollPosition oldPosition = null, string debugLabel = null, _DraggableSheetExtent extent = null ) : base(physics: physics, context: context, initialPixels: initialPixels, keepScrollOffset: keepScrollOffset, oldPosition: oldPosition, debugLabel: debugLabel) { D.assert(extent != null); this.extent = extent; }
internal _PagePosition( ScrollPhysics physics = null, ScrollContext context = null, int initialPage = 0, bool keepPage = true, float viewportFraction = 1.0f, ScrollPosition oldPosition = null ) : base( physics: physics, context: context, initialPixels: null, keepScrollOffset: keepPage, oldPosition: oldPosition ) { D.assert(viewportFraction > 0.0); this.initialPage = initialPage; _viewportFraction = viewportFraction; _pageToUseOnStartup = initialPage; }
public _FixedExtentScrollPosition( ScrollPhysics physics, ScrollContext context, int initialItem, bool keepScrollOffset = true, ScrollPosition oldPosition = null, string debugLabel = null ) : base( physics: physics, context: context, initialPixels: _getItemExtentFromScrollContext(context) * initialItem, keepScrollOffset: keepScrollOffset, oldPosition: oldPosition, debugLabel: debugLabel ) { D.assert( context is _FixedExtentScrollableState, () => "FixedExtentScrollController can only be used with ListWheelScrollViews" ); }
private static Composite CreateUseBestScroll() { return(new ThrottlePasses( TimeSpan.FromMilliseconds(250), new Sequence( ctx => { ScrollContext sc = new ScrollContext(); sc.scroll = FindBestScroll(); return sc; }, new Decorator( req => req != null && ((ScrollContext)req).scroll != null, new Action(r => Logger.WriteDebug("UseBestScroll: will attempt to use {0} #{1}", ((ScrollContext)r).scroll.Name, ((ScrollContext)r).scroll.Entry)) ), new Action(r => { ScrollContext sc = (ScrollContext)r; sc.usedAt = DateTime.UtcNow; UseItem(sc.scroll); }), new WaitContinue( TimeSpan.FromMilliseconds(250), until => Utilities.EventHandlers.LastRedErrorMessage > ((ScrollContext)until).usedAt, new Action(r => { int suppressFor = 5; suppressScrollsUntil = DateTime.UtcNow.AddMinutes(suppressFor); Logger.WriteDebug("UseBestScroll: suppressing Scroll Use for {0} minutes due to WoWRedError encountered", suppressFor); return RunStatus.Failure; }) ) ) )); }
static float _getItemExtentFromScrollContext(ScrollContext context) { _FixedExtentScrollableState scrollable = (_FixedExtentScrollableState)context; return(scrollable.itemExtent); }