async void setTitleImage(ParentingViewController pack, FileImageSource titleIcon)
{
var source = Internals.Registrar.Registered.GetHandler <IImageSourceHandler>(titleIcon.GetType());
var image = await source.LoadImageAsync(titleIcon);
//UIImage ctor throws on file not found if MonoTouch.ObjCRuntime.Class.ThrowOnInitFailure is true;
pack.NavigationItem.TitleView = new UIImageView(image);
}
async void UpdateImage()
{
IImageSourceHandler handler;
FileImageSource source = Element.Image;
if (source != null && (handler = Registrar.Registered.GetHandler <IImageSourceHandler>(source.GetType())) != null)
{
UIImage uiimage;
try
{
uiimage = await handler.LoadImageAsync(source, scale : (float)UIScreen.MainScreen.Scale);
}
catch (OperationCanceledException)
{
uiimage = null;
}
UIButton button = Control;
if (button != null && uiimage != null)
{
if (Forms.IsiOS7OrNewer)
{
button.SetImage(uiimage.ImageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal), UIControlState.Normal);
}
else
{
button.SetImage(uiimage, UIControlState.Normal);
}
button.ImageView.ContentMode = UIViewContentMode.ScaleAspectFit;
ComputeEdgeInsets(Control, Element.ContentLayout);
}
}
else
{
Control.SetImage(null, UIControlState.Normal);
ClearEdgeInsets(Control);
}
((IVisualElementController)Element).NativeSizeChanged();
}
async void UpdateImage()
{
IImageSourceHandler handler;
FileImageSource source = Element.Image;
if (source != null && (handler = Registrar.Registered.GetHandler <IImageSourceHandler>(source.GetType())) != null)
{
NSImage uiimage;
try
{
uiimage = await handler.LoadImageAsync(source);
}
catch (OperationCanceledException)
{
uiimage = null;
}
NSButton button = Control;
if (button != null && uiimage != null)
{
button.Image = uiimage;
if (!string.IsNullOrEmpty(button.Title))
{
button.ImagePosition = Element.ToNSCellImagePosition();
}
}
}
((IVisualElementController)Element).NativeSizeChanged();
}
internal static Drawable GetFormsDrawable(this Context context, FileImageSource fileImageSource)
{
var file = fileImageSource.File;
Drawable drawable = context.GetDrawable(fileImageSource);
if (drawable == null)
{
var bitmap = GetBitmap(context.Resources, file) ?? BitmapFactory.DecodeFile(file);
if (bitmap == null)
{
var source = Registrar.Registered.GetHandler <IImageSourceHandler>(fileImageSource.GetType());
bitmap = source.LoadImageAsync(fileImageSource, context).GetAwaiter().GetResult();
}
if (bitmap != null)
{
drawable = new BitmapDrawable(context.Resources, bitmap);
}
}
return(drawable);
}
async void UpdateImage()
{
IImageSourceHandler handler;
FileImageSource source = Element.Image;
if (source != null &&
(handler = Xamarin.Forms.Internals.Registrar.Registered.GetHandler <IImageSourceHandler>(source.GetType())) != null)
{
string uiimage;
try
{
uiimage = await handler.LoadImageAsync(source, scale : 1.0f);
}
catch (OperationCanceledException)
{
uiimage = null;
}
var Button = Control;
if (Button != null && uiimage != null)
{
Button.Style.BackgroundImage = uiimage;
Button.Style.BackgroundPosition = "center";
}
}
else
{
Control.Style.BackgroundImage = null;
Control.Style.BackgroundPosition = null;
}
((IVisualElementController)Element).NativeSizeChanged();
}