void ResizeEmoji()
{
var buffer = Buffer;
int width, height;
int descent;
using (var layout = CreatePangoLayout(null)) {
layout.GetPixelSize(out width, out height);
descent = layout.Context.GetMetrics(layout.FontDescription, null).Descent;
}
_MessageTextTagTable.Foreach((tag) => {
if (!(tag is EmojiTag))
{
return;
}
var emojiTag = tag as EmojiTag;
tag.Rise = -descent;
var pix = new Gdk.Pixbuf(emojiTag.Path, -1, height);
var beforeIter = buffer.GetIterAtMark(emojiTag.Mark);
var afterIter = beforeIter;
afterIter.ForwardToTagToggle(tag);
buffer.RemoveTag(tag, beforeIter, afterIter);
buffer.Delete(ref beforeIter, ref afterIter);
buffer.InsertPixbuf(ref beforeIter, pix);
// after all that, we need to re-apply the tag to the buffer
afterIter = beforeIter;
beforeIter = Buffer.GetIterAtMark(emojiTag.Mark);
buffer.ApplyTag(tag, beforeIter, afterIter);
});
}
public override void Dispose()
{
// HACK: this shouldn't be needed but GTK# keeps GC handles
// these callbacks for some reason and thus leaks :(
_MessageTextTagTable.Foreach(tag => {
if (tag is LinkTag)
{
tag.TextEvent -= OnLinkTagTextEvent;
}
else if (tag is PersonTag)
{
tag.TextEvent -= OnPersonTagTextEvent;
}
});
_MessageTextTagTable.Dispose();
base.Dispose();
}