public bool AddSmiles(Context context, ISpannable spannable)
{
var hasChanges = false;
foreach (var entry in Emoticons)
{
var smiley = entry.Key;
var smileyImage = entry.Value;
var indices = spannable.ToString().IndexesOf(smiley);
foreach (var index in indices)
{
var set = true;
foreach (ImageSpan span in spannable.GetSpans(index, index + smiley.Length, Java.Lang.Class.FromType(typeof(ImageSpan))))
{
if (spannable.GetSpanStart(span) >= index && spannable.GetSpanEnd(span) <= index + smiley.Length)
{
spannable.RemoveSpan(span);
}
else
{
set = false;
break;
}
}
if (set)
{
hasChanges = true;
spannable.SetSpan(new ImageSpan(context, smileyImage), index, index + smiley.Length, SpanTypes.ExclusiveExclusive);
}
}
}
return(hasChanges);
}
/// <summary>
/// Since they are several over write of the Test property during layout we have to set this field as long as it is not definitly set
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void nativeBtn_AfterTextChanged(object sender, AfterTextChangedEventArgs e)
{
ISpannable spannable = e.Editable;
var indice = spannable.ToString().IndexOf(_iconButton.Icon);
var spans = spannable.GetSpans(indice, indice + _iconButton.Icon.Length, Java.Lang.Class.FromType(typeof(TypefaceSpan))).ToList();
if (spans.Count == 0)
{
_nativeBtn.SetText(_iconSpan, TextView.BufferType.Spannable);
}
}
private static List <AttributedTextRun> CreateRuns(
ISpannable target,
TextWriter writer)
{
var runs = new List <AttributedTextRun>();
var spans = target.GetSpans(0, target.Length(), null);
if (spans != null)
{
foreach (var span in spans)
{
System.Console.WriteLine(span);
}
}
writer.Write(target.ToString());
return(runs);
}
private static void FormatImages(Context context, ISpannable spannable)
{
var text = spannable?.ToString();
if (string.IsNullOrWhiteSpace(text))
{
return;
}
var matches = ImageRegex.Matches(text);
foreach (var match in matches.ToList())
{
var drawable = ContextCompat.GetDrawable(context, PlaceholderImage);
drawable.SetBounds(0, 0, drawable.IntrinsicWidth, drawable.IntrinsicHeight);
var imageSpan = new ImageSpan(drawable, SpanAlign.Baseline);
var clickSpan = new CustomClickableSpan();
clickSpan.Click += (sender, e) =>
{
var intent = new Intent(Intent.ActionView,
Android.Net.Uri.Parse(match.Groups[2].Value));
context.StartActivity(intent);
};
spannable.SetSpan(clickSpan, match.Index, match.Index + match.Length,
SpanTypes.InclusiveExclusive);
spannable.SetSpan(imageSpan, match.Index, match.Index + match.Length,
SpanTypes.InclusiveExclusive);
if (!int.TryParse(match.Groups[1].Value, out var width))
{
width = 250;
}
width = Math.Min(width, MaxImageWidth);
Picasso.With(context).Load(match.Groups[2].Value)
.Into(new DrawableTarget(spannable, match.Index, match.Index + match.Length, (int)(width * context.Resources.DisplayMetrics.Density)));
}
}
private static void FormatYoutube(Context context, ISpannable spannable)
{
var text = spannable?.ToString();
if (string.IsNullOrWhiteSpace(text))
{
return;
}
var matches = YoutubeRegex.Matches(text);
var playIcon = ContextCompat.GetDrawable(context, Resource.Drawable.svg_play);
playIcon.SetColorFilter(Color.White, PorterDuff.Mode.SrcIn);
playIcon.SetAlpha(150);
foreach (var match in matches.ToList())
{
var drawable = ContextCompat.GetDrawable(context, PlaceholderImage);
drawable.SetBounds(0, 0, drawable.IntrinsicWidth, drawable.IntrinsicHeight);
var imageSpan = new ImageSpan(drawable, SpanAlign.Baseline);
var clickSpan = new CustomClickableSpan();
clickSpan.Click += (sender, e) =>
{
var intent = new Intent(Intent.ActionView,
Android.Net.Uri.Parse(string.Format(YoutubeLinkUrl, match.Groups[1].Value)));
context.StartActivity(intent);
};
spannable.SetSpan(clickSpan, match.Index, match.Index + match.Length,
SpanTypes.InclusiveExclusive);
spannable.SetSpan(imageSpan, match.Index, match.Index + match.Length,
SpanTypes.InclusiveExclusive);
Picasso.With(context).Load(string.Format(YoutubeThumbnailUrl, match.Groups[1].Value))
.Into(new DrawableTarget(spannable, match.Index, match.Index + match.Length,
(int)(250 * context.Resources.DisplayMetrics.Density), playIcon));
}
}
// Taken from https://gist.githubusercontent.com/Cheesebaron/5034440/raw/f962c41c95f8d94457ef9a60e19fe7efa2a50d61/SpannableTools.cs
public static bool AddSmiles(Context context, ISpannable spannable)
{
var hasChanges = false;
foreach (var entry in Emoticons)
{
var smiley = entry.Key;
var smileyImage = entry.Value;
var indices = spannable.ToString().IndexesOf(smiley);
var index = 0;
foreach (var token in spannable.ToString().Split(' '))
{
if (token.Equals (smiley)) {
var set = true;
foreach (ImageSpan span in spannable.GetSpans(index, index + smiley.Length, Java.Lang.Class.FromType(typeof(ImageSpan)))) {
if (spannable.GetSpanStart (span) >= index && spannable.GetSpanEnd (span) <= index + smiley.Length)
spannable.RemoveSpan (span);
else {
set = false;
break;
}
}
if (set) {
hasChanges = true;
spannable.SetSpan (new ImageSpan (context, smileyImage), index, index + smiley.Length, SpanTypes.ExclusiveExclusive);
}
}
index += token.Length + 1;
}
}
return hasChanges;
}
