/// <summary>
/// Close the Modal Window and removes it from Super View
/// </summary>
public void Close()
{
NSNotificationCenter.DefaultCenter.RemoveObserver(this, "UIDeviceOrientationDidChangeNotification", null);
CATransform3D currentTransform = this.dialogView.Layer.Transform;
nfloat startRotation = nfloat.Parse(this.ValueForKeyPath(new NSString("layer.transform.rotation.z")).ToString());
CATransform3D rotation = CATransform3D.MakeRotation((nfloat)(-startRotation + Math.PI * 270 / 180), 0, 0, 0);
CATransform3D scale = CATransform3D.MakeScale((nfloat)1, (nfloat)1, 1);
this.dialogView.Layer.Transform = currentTransform.Concat(scale);
this.dialogView.Layer.Opacity = 1;
UIView.Animate(0.2, 0, UIViewAnimationOptions.TransitionNone, () =>
{
this.BackgroundColor = UIColor.FromRGBA(0, 0, 0, 0);
this.dialogView.Layer.Transform = currentTransform.Concat(CATransform3D.MakeScale((nfloat)0.6, (nfloat)0.6, 1));
this.dialogView.Layer.Opacity = 0;
}, () =>
{
foreach (UIView v in this.Subviews)
{
v.RemoveFromSuperview();
}
this.RemoveFromSuperview();
this.SetupViews();
});
}
private CATransform3D CATransform3DMakePerspective(CGPoint center, float disZ)
{
CATransform3D transToCenter = CATransform3D.MakeTranslation(-center.X, -center.Y, 0);
CATransform3D transBack = CATransform3D.MakeTranslation(center.X, center.Y, 0);
CATransform3D scale = CATransform3D.Identity;
scale.m34 = -1.0f / disZ;
return(transToCenter.Concat(scale).Concat(transBack));
}
void ApplyMaskScale(float scale)
{
// ultimately this scales the layer from the center out (rather than top/left)
// create a transform that translates the layer by half its width/height
// and then scales it
CATransform3D translateScale = new CATransform3D();
translateScale = CATransform3D.Identity;
translateScale = translateScale.Scale(scale);
translateScale = translateScale.Translate(-(Label.Layer.Mask.Bounds.Width / 2), -(Label.Layer.Mask.Bounds.Height / 2), 0);
// now apply a transform that puts it back by its width/height, effectively re-centering it.
CATransform3D postScale = new CATransform3D();
postScale = CATransform3D.Identity;
postScale = postScale.Translate((Label.Layer.Mask.Bounds.Width / 2), (Label.Layer.Mask.Bounds.Height / 2), 0);
// and now concat the post scale and apply
Label.Layer.Mask.Transform = translateScale.Concat(postScale);
}
public void Close()
{
var ea = new CustomIOSAlertViewClosingEventArgs();
Closing?.Invoke(this, ea);
if (ea.Cancel)
{
return;
}
CATransform3D currentTransform = DialogView.Layer.Transform;
if (NSFoundationVersionNumber <= NSFoundationVersionNumber_iOS_7_1)
{
float startRotation = ((NSNumber)DialogView.ValueForKeyPath(new NSString("layer.transform.rotation.z"))).FloatValue;
CATransform3D rotation = CATransform3D.MakeRotation(new nfloat(-startRotation + Math.PI * 270.0 / 180.0), 0.0f, 0.0f, 0.0f);
DialogView.Layer.Transform = rotation.Concat(CATransform3D.MakeScale(1, 1, 1));
}
DialogView.Layer.Opacity = 1.0f;
UIView.Animate(0.2f, 0.0, UIViewAnimationOptions.TransitionNone, () =>
{
BackgroundColor = UIColor.FromRGBA(0.0f, 0.0f, 0.0f, 0.0f);
DialogView.Layer.Transform = currentTransform.Concat(CATransform3D.MakeScale(0.6f, 0.6f, 1.0f));
DialogView.Layer.Opacity = 0;
}, () =>
{
foreach (var v in Subviews)
{
v.RemoveFromSuperview();
}
RemoveFromSuperview();
Closed?.Invoke(this, EventArgs.Empty);
});
}
internal static CATransform3D Prepend(this CATransform3D a, CATransform3D b) => b.Concat(a);
private CATransform3D CATransform3DPerspect(CATransform3D t, CGPoint center, float disZ)
{
return(t.Concat(CATransform3DMakePerspective(center, disZ)));
}
public static CATransform3D Prepend(this CATransform3D a, CATransform3D b) => b.Concat(a);