public static UIImage CreateAvatarWithTextPlaceholder(string name, AvatarStyles styles)
{
var(text, backgroundColor) = AvatarPlaceholderBuilder.GetAbbreviationAndColor(name, styles.BackgroundHexColors);
return(CreateCircleImage(
styles.Size,
backgroundColor.UIColorFromHex().CGColor,
() => DrawText(text, styles.Size, styles.Font, styles.TextColor)));
}
public static void LoadImageWithTextPlaceholder(this UIImageView imageView,
string url,
string name,
AvatarStyles styles,
Action <TaskParameter>?transform = null)
{
imageView.Image = CreateAvatarWithTextPlaceholder(name, styles);
if (string.IsNullOrEmpty(url))
{
return;
}
var loader = ImageService.Instance
.LoadUrl(url)
.DownSampleInDip(styles.Size.Width, styles.Size.Height);
transform?.Invoke(loader);
loader.IntoAsync(imageView);
}
public static async void LoadImageWithTextPlaceholder(this ASImageNode imageView,
string url,
string name,
AvatarStyles styles)
{
Execute.BeginOnUIThread(() =>
{
imageView.Image = CreateAvatarWithTextPlaceholder(name, styles);
});
if (string.IsNullOrEmpty(url))
{
return;
}
var expr = ImageService.Instance
.LoadUrl(url)
.DownSampleInDip(styles.Size.Width, styles.Size.Height);
UIImage image = null;
try
{
image = await expr.AsUIImageAsync().ConfigureAwait(false);
}
catch
{
// do nothing
}
if (image != null)
{
Execute.BeginOnUIThread(() =>
{
imageView.Image = image;
});
}
}
public AvatarPlaceholderDrawable(Context context, string name, AvatarStyles styles)
{
_context = context;
var info = AvatarPlaceholderBuilder.GetAbbreviationAndColor(name, styles.BackgroundHexColors);
_avatarText = info.Text;
_textPaint = new Paint
{
AntiAlias = true,
Color = Color.White
};
_textPaint.SetTypeface(Typeface.Create("sans-serif", TypefaceStyle.Bold));
_backgroundPaint = new Paint
{
AntiAlias = true
};
_backgroundPaint.SetStyle(Paint.Style.Fill);
_backgroundPaint.Color = Color.ParseColor(info.Color);
_size = Math.Min(styles.Size.Width, styles.Size.Height);
}
