async static Task StartStopAnimation(
IVisualElementRenderer renderer,
IImageController imageController,
IImageElement imageElement)
{
IImageRendererController imageRendererController = renderer as IImageRendererController;
var view = renderer.View as ImageView;
if (imageRendererController.IsDisposed || imageElement == null || view == null || view.IsDisposed())
{
return;
}
if (imageElement.IsLoading)
{
return;
}
if (!(view.Drawable is FormsAnimationDrawable) && imageElement.IsAnimationPlaying)
{
await TryUpdateBitmap(imageRendererController, view, imageElement);
}
if (view.Drawable is FormsAnimationDrawable animation)
{
if (imageElement.IsAnimationPlaying && !animation.IsRunning)
{
animation.Start();
}
else if (!imageElement.IsAnimationPlaying && animation.IsRunning)
{
animation.Stop();
}
}
}
async static Task TryUpdateBitmap(IImageRendererController rendererController, ImageView Control, IImageElement newImage, IImageElement previous = null)
{
if (newImage == null || rendererController.IsDisposed)
{
return;
}
await Control.UpdateBitmap(newImage, previous).ConfigureAwait(false);
}
static void UpdateAspect(IImageRendererController rendererController, ImageView Control, IImageElement newImage, IImageElement previous = null)
{
if (newImage == null || rendererController.IsDisposed)
{
return;
}
ImageView.ScaleType type = newImage.Aspect.ToScaleType();
Control.SetScaleType(type);
}
async static Task TryUpdateBitmap(IImageRendererController rendererController, ImageView Control, IImageElement newImage, IImageElement previous = null)
{
if (newImage == null || rendererController.IsDisposed)
{
return;
}
if (Control.Drawable is FormsAnimationDrawable currentAnimation)
{
rendererController.SetFormsAnimationDrawable(currentAnimation);
currentAnimation.Stop();
}
else
{
rendererController.SetFormsAnimationDrawable(null);
}
try
{
await Control.UpdateBitmap(newImage, previous).ConfigureAwait(false);
}
catch (Exception ex)
{
Log.Warning(nameof(ImageElementManager), "Error loading image: {0}", ex);
}
finally
{
if (newImage is IImageController imageController)
{
imageController.SetIsLoading(false);
}
}
if (rendererController.IsDisposed)
{
return;
}
if (Control.Drawable is FormsAnimationDrawable updatedAnimation)
{
rendererController.SetFormsAnimationDrawable(updatedAnimation);
if (newImage.IsAnimationPlaying)
{
updatedAnimation.Start();
}
}
}
async static Task TryUpdateBitmap(IImageRendererController rendererController, ImageView Control, IImageElement newImage, IImageElement previous = null)
{
if (newImage == null || rendererController.IsDisposed)
{
return;
}
if (Control.Drawable is FormsAnimationDrawable currentAnimation)
{
rendererController.SetFormsAnimationDrawable(currentAnimation);
currentAnimation.Stop();
}
else
{
rendererController.SetFormsAnimationDrawable(null);
}
try
{
await Control.UpdateBitmap(newImage, previous).ConfigureAwait(false);
}
catch (Exception ex)
{
Application.Current?.FindMauiContext()?.CreateLogger <IImageRendererController>()?.LogWarning(ex, "Error loading image");
}
finally
{
if (newImage is IImageController imageController)
{
imageController.SetIsLoading(false);
}
}
if (rendererController.IsDisposed)
{
return;
}
if (Control.Drawable is FormsAnimationDrawable updatedAnimation)
{
rendererController.SetFormsAnimationDrawable(updatedAnimation);
if (newImage.IsAnimationPlaying)
{
updatedAnimation.Start();
}
}
}
async static Task TryUpdateBitmap(IImageRendererController rendererController, ImageView Control, IImageElement newImage, IImageElement previous = null)
{
if (newImage == null || rendererController.IsDisposed)
{
return;
}
try
{
await Control.UpdateBitmap(newImage, previous).ConfigureAwait(false);
}
catch (Exception ex)
{
Log.Warning(nameof(ImageElementManager), "Error loading image: {0}", ex);
}
finally
{
if (newImage is IImageController imageController)
{
imageController.SetIsLoading(false);
}
}
}