static void AddAlternativeText(Gtk.TextBuffer buffer, ref Gtk.TextIter iter, ImageMessagePartModel imgPart)
{
if (!String.IsNullOrEmpty(imgPart.AlternativeText))
{
buffer.Insert(ref iter, imgPart.AlternativeText);
}
}
void AddEmoji(Gtk.TextBuffer buffer, ref Gtk.TextIter iter, ImageMessagePartModel imgPart, string shortName)
{
var unicode = Emojione.ShortnameToUnicode(shortName);
if (unicode == null)
{
AddAlternativeText(buffer, ref iter, imgPart);
return;
}
// A mark here serves two pusposes. One is to allow us to apply the
// tag across the pixbuf. It also lets us know later where to put
// the pixbuf if we need to load it from the network
var mark = new Gtk.TextMark(null, true);
buffer.AddMark(mark, iter);
var emojiName = unicode + ".png";
string emojiPath;
if (EmojiCache.TryGetIcon("emojione", emojiName, out emojiPath))
{
var emojiFile = new FileInfo(emojiPath);
if (emojiFile.Exists && emojiFile.Length > 0)
{
AddEmoji(buffer, ref iter, imgPart, shortName, mark, emojiPath);
}
else
{
AddAlternativeText(buffer, ref iter, imgPart);
}
return;
}
var emojiUrl = Emojione.UnicodeToUrl(unicode);
EmojiCache.BeginDownloadFile("emojione", emojiName, emojiUrl,
(path) => {
GLib.Idle.Add(delegate {
var markIter = buffer.GetIterAtMark(mark);
AddEmoji(buffer, ref markIter, imgPart, shortName, mark, path);
return(false);
});
},
(ex) => {
GLib.Idle.Add(delegate {
var markIter = buffer.GetIterAtMark(mark);
buffer.DeleteMark(mark);
AddAlternativeText(buffer, ref markIter, imgPart);
return(false);
});
}
);
}
public MessageModel ToMessage()
{
var msg = new MessageModel()
{
MessageType = this.MessageType,
TimeStamp = this.TimeStamp
};
foreach (var msgPart in MessageParts)
{
MessagePartModel part = null;
switch (msgPart.Type)
{
case "Text":
var textPart = new TextMessagePartModel()
{
ForegroundColor = msgPart.ForegroundColor,
BackgroundColor = msgPart.BackgroundColor,
Underline = msgPart.Underline,
Bold = msgPart.Bold,
Italic = msgPart.Italic,
Text = msgPart.Text
};
part = textPart;
break;
case "URL":
var urlPart = new UrlMessagePartModel()
{
Url = msgPart.Url,
Text = msgPart.Text
};
part = urlPart;
break;
case "Image":
var imagePart = new ImageMessagePartModel()
{
ImageFileName = msgPart.ImageFileName,
AlternativeText = msgPart.AlternativeText
};
part = imagePart;
break;
}
if (part == null)
{
continue;
}
part.IsHighlight = msgPart.IsHighlight;
msg.MessageParts.Add(part);
}
return(msg);
}
void AddEmoji(Gtk.TextBuffer buffer, ref Gtk.TextIter iter,
ImageMessagePartModel imgPart, string shortName,
Gtk.TextMark emojiMark, string imagePath)
{
int width, height;
int descent;
using (var layout = CreatePangoLayout(null)) {
layout.GetPixelSize(out width, out height);
descent = layout.Context.GetMetrics(layout.FontDescription, null).Descent;
}
Gdk.Pixbuf emojiPixBuf;
try {
emojiPixBuf = new Gdk.Pixbuf(imagePath, -1, height);
} catch (Exception ex) {
#if LOG4NET
_Logger.ErrorFormat(
"AddEmoji(): error loading " +
"image file: '{0}' " +
"emoji: '{1}' into Gdk.Pixbuf(), " +
"Exception: {2}",
imagePath, shortName, ex
);
#endif
// delete the broken image file, maybe after the
// next download this will be a valid image
File.Delete(imagePath);
// show alternative text as fallback instead
buffer.DeleteMark(emojiMark);
AddAlternativeText(buffer, ref iter, imgPart);
return;
}
buffer.InsertPixbuf(ref iter, emojiPixBuf);
var beforeIter = buffer.GetIterAtMark(emojiMark);
var emojiTag = new EmojiTag(emojiMark, imagePath)
{
Rise = -descent
};
_MessageTextTagTable.Add(emojiTag);
buffer.ApplyTag(emojiTag, beforeIter, iter);
}
private void InsertToBuffer(Gtk.TextBuffer buffer, ref Gtk.TextIter iter, ImageMessagePartModel imgpart)
{
Uri uri = null;
string scheme = null;
try {
uri = new Uri(imgpart.ImageFileName);
scheme = uri.Scheme;
} catch (UriFormatException) {
AddAlternativeText(buffer, ref iter, imgpart);
}
switch (scheme)
{
case "smuxi-emoji":
var shortName = uri.Host;
AddEmoji(buffer, ref iter, imgpart, shortName);
break;
default:
AddAlternativeText(buffer, ref iter, imgpart);
break;
}
}
void AddEmoji(Gtk.TextBuffer buffer, ref Gtk.TextIter iter, ImageMessagePartModel imgPart, string shortName)
{
var unicode = Emojione.ShortnameToUnicode(shortName);
if (unicode == null)
{
AddAlternativeText(buffer, ref iter, imgPart);
return;
}
int width, height;
int descent;
using (var layout = CreatePangoLayout(null)) {
layout.GetPixelSize(out width, out height);
descent = layout.Context.GetMetrics(layout.FontDescription, null).Descent;
}
// A mark here serves two pusposes. One is to allow us to apply the
// tag across the pixbuf. It also lets us know later where to put
// the pixbuf if we need to load it from the network
var mark = new Gtk.TextMark(null, true);
buffer.AddMark(mark, iter);
var emojiName = unicode + ".png";
string emojiPath;
if (EmojiCache.TryGetIcon("emojione", emojiName, out emojiPath))
{
var emojiFile = new FileInfo(emojiPath);
if (emojiFile.Exists && emojiFile.Length > 0)
{
var pix = new Gdk.Pixbuf(emojiPath, -1, height);
buffer.InsertPixbuf(ref iter, pix);
var beforeIter = buffer.GetIterAtMark(mark);
var imgTag = new EmojiTag(mark, emojiFile.FullName);
imgTag.Rise = -descent;
_MessageTextTagTable.Add(imgTag);
buffer.ApplyTag(imgTag, beforeIter, iter);
}
else
{
AddAlternativeText(buffer, ref iter, imgPart);
}
return;
}
var emojiUrl = Emojione.UnicodeToUrl(unicode);
EmojiCache.BeginDownloadFile("emojione", emojiName, emojiUrl,
(path) => {
GLib.Idle.Add(delegate {
var afterIter = buffer.GetIterAtMark(mark);
buffer.InsertPixbuf(ref afterIter, new Gdk.Pixbuf(path, -1, height));
var beforeIter = buffer.GetIterAtMark(mark);
var emojiTag = new EmojiTag(mark, path);
_MessageTextTagTable.Add(emojiTag);
emojiTag.Rise = -descent;
buffer.ApplyTag(emojiTag, beforeIter, afterIter);
return(false);
});
},
(ex) => {
GLib.Idle.Add(delegate {
var markIter = buffer.GetIterAtMark(mark);
buffer.DeleteMark(mark);
AddAlternativeText(buffer, ref markIter, imgPart);
return(false);
});
}
);
}
public virtual MessageModel ToMessage()
{
var msg = new MessageModel() {
MessageType = this.MessageType,
TimeStamp = this.TimeStamp
};
foreach (var msgPart in MessageParts) {
MessagePartModel part = null;
switch (msgPart.Type) {
case "Text":
var textPart = new TextMessagePartModel() {
ForegroundColor = msgPart.ForegroundColor,
BackgroundColor = msgPart.BackgroundColor,
Underline = msgPart.Underline,
Bold = msgPart.Bold,
Italic = msgPart.Italic,
Text = msgPart.Text
};
part = textPart;
break;
case "URL":
var urlPart = new UrlMessagePartModel() {
Url = msgPart.Url,
Text = msgPart.Text
};
part = urlPart;
break;
case "Image":
var imagePart = new ImageMessagePartModel() {
ImageFileName = msgPart.ImageFileName,
AlternativeText = msgPart.AlternativeText
};
part = imagePart;
break;
}
if (part == null) {
continue;
}
part.IsHighlight = msgPart.IsHighlight;
msg.MessageParts.Add(part);
}
return msg;
}
