本文整理汇总了C#中CALayer.LayoutSublayers方法的典型用法代码示例。如果您正苦于以下问题：C# CALayer.LayoutSublayers方法的具体用法？C# CALayer.LayoutSublayers怎么用？C# CALayer.LayoutSublayers使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CALayer的用法示例。
在下文中一共展示了CALayer.LayoutSublayers方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: OnUpdateNativeControl
void OnUpdateNativeControl(CALayer caLayer)
{
var view = Renderer.Element;
var uiview = Renderer.NativeView;
if (view == null || view.Batched)
return;
var shouldInteract = !view.InputTransparent && view.IsEnabled;
if (_isInteractive != shouldInteract)
{
uiview.UserInteractionEnabled = shouldInteract;
_isInteractive = shouldInteract;
}
var boundsChanged = _lastBounds != view.Bounds;
var thread = !boundsChanged && !caLayer.Frame.IsEmpty;
var anchorX = (float)view.AnchorX;
var anchorY = (float)view.AnchorY;
var translationX = (float)view.TranslationX;
var translationY = (float)view.TranslationY;
var rotationX = (float)view.RotationX;
var rotationY = (float)view.RotationY;
var rotation = (float)view.Rotation;
var scale = (float)view.Scale;
var width = (float)view.Width;
var height = (float)view.Height;
var x = (float)view.X;
var y = (float)view.Y;
var opacity = (float)view.Opacity;
var isVisible = view.IsVisible;
var updateTarget = Interlocked.Increment(ref _updateCount);
Action update = () =>
{
if (updateTarget != _updateCount)
return;
var visualElement = view;
var parent = view.RealParent;
var shouldRelayoutSublayers = false;
if (isVisible && caLayer.Hidden)
{
caLayer.Hidden = false;
if (!caLayer.Frame.IsEmpty)
shouldRelayoutSublayers = true;
}
if (!isVisible && !caLayer.Hidden)
{
caLayer.Hidden = true;
shouldRelayoutSublayers = true;
}
// ripe for optimization
var transform = CATransform3D.Identity;
// Dont ever attempt to actually change the layout of a Page unless it is a ContentPage
// iOS is a really big fan of you not actually modifying the View's of the UIViewControllers
if ((!(visualElement is Page) || visualElement is ContentPage) && width > 0 && height > 0 && parent != null && boundsChanged)
{
var target = new RectangleF(x, y, width, height);
// must reset transform prior to setting frame...
caLayer.Transform = transform;
uiview.Frame = target;
if (shouldRelayoutSublayers)
caLayer.LayoutSublayers();
}
else if (width <= 0 || height <= 0)
{
caLayer.Hidden = true;
return;
}
caLayer.AnchorPoint = new PointF(anchorX, anchorY);
caLayer.Opacity = opacity;
const double epsilon = 0.001;
// position is relative to anchor point
if (Math.Abs(anchorX - .5) > epsilon)
transform = transform.Translate((anchorX - .5f) * width, 0, 0);
if (Math.Abs(anchorY - .5) > epsilon)
transform = transform.Translate(0, (anchorY - .5f) * height, 0);
if (Math.Abs(translationX) > epsilon || Math.Abs(translationY) > epsilon)
transform = transform.Translate(translationX, translationY, 0);
if (Math.Abs(scale - 1) > epsilon)
transform = transform.Scale(scale);
// not just an optimization, iOS will not "pixel align" a view which has m34 set
if (Math.Abs(rotationY % 180) > epsilon || Math.Abs(rotationX % 180) > epsilon)
transform.m34 = 1.0f / -400f;
if (Math.Abs(rotationX % 360) > epsilon)
transform = transform.Rotate(rotationX * (float)Math.PI / 180.0f, 1.0f, 0.0f, 0.0f);
//.........这里部分代码省略.........