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 widthPango, heightPango;
int descent;
using (var layout = CreatePangoLayout(null)) {
layout.GetPixelSize(out width, out height);
layout.GetSize(out widthPango, out heightPango);
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 static void Deserialize (Gtk.TextBuffer buffer,
Gtk.TextIter start,
XmlTextReader xml)
{
int offset = start.Offset;
Stack<TagStart> stack = new Stack<TagStart> ();
TagStart tag_start;
NoteTagTable note_table = buffer.TagTable as NoteTagTable;
int curr_depth = -1;
// A stack of boolean values which mark if a
// list-item contains content other than another list
Stack<bool> list_stack = new Stack<bool> ();
while (xml.Read ()) {
switch (xml.NodeType) {
case XmlNodeType.Element:
if (xml.Name == "note-content")
break;
tag_start = new TagStart ();
tag_start.Start = offset;
if (note_table != null &&
note_table.IsDynamicTagRegistered (xml.Name)) {
tag_start.Tag =
note_table.CreateDynamicTag (xml.Name);
} else if (xml.Name == "list") {
curr_depth++;
break;
} else if (xml.Name == "list-item") {
if (curr_depth >= 0) {
if (xml.GetAttribute ("dir") == "rtl") {
tag_start.Tag =
note_table.GetDepthTag (curr_depth, Pango.Direction.Rtl);
} else {
tag_start.Tag =
note_table.GetDepthTag (curr_depth, Pango.Direction.Ltr);
}
list_stack.Push (false);
} else {
Logger.Error("</list> tag mismatch");
}
} else {
tag_start.Tag = buffer.TagTable.Lookup (xml.Name);
}
if (tag_start.Tag is NoteTag) {
((NoteTag) tag_start.Tag).Read (xml, true);
}
stack.Push (tag_start);
break;
case XmlNodeType.Text:
case XmlNodeType.Whitespace:
case XmlNodeType.SignificantWhitespace:
Gtk.TextIter insert_at = buffer.GetIterAtOffset (offset);
buffer.Insert (ref insert_at, xml.Value);
offset += xml.Value.Length;
// If we are inside a <list-item> mark off
// that we have encountered some content
if (list_stack.Count > 0) {
list_stack.Pop ();
list_stack.Push (true);
}
break;
case XmlNodeType.EndElement:
if (xml.Name == "note-content")
break;
if (xml.Name == "list") {
curr_depth--;
break;
}
tag_start = stack.Pop ();
if (tag_start.Tag == null)
break;
Gtk.TextIter apply_start, apply_end;
apply_start = buffer.GetIterAtOffset (tag_start.Start);
apply_end = buffer.GetIterAtOffset (offset);
if (tag_start.Tag is NoteTag) {
((NoteTag) tag_start.Tag).Read (xml, false);
}
// Insert a bullet if we have reached a closing
// <list-item> tag, but only if the <list-item>
// had content.
DepthNoteTag depth_tag = tag_start.Tag as DepthNoteTag;
if (depth_tag != null && list_stack.Pop ()) {
((NoteBuffer) buffer).InsertBullet (ref apply_start,
depth_tag.Depth,
depth_tag.Direction);
buffer.RemoveAllTags (apply_start, apply_start);
offset += 2;
} else if (depth_tag == null) {
buffer.ApplyTag (tag_start.Tag, apply_start, apply_end);
}
break;
default:
Logger.Warn ("Unhandled element {0}. Value: '{1}'",
xml.NodeType,
xml.Value);
break;
}
}
}
public void Undo (Gtk.TextBuffer buffer)
{
Gtk.TextIter start_iter, end_iter;
start_iter = buffer.GetIterAtOffset (start);
end_iter = buffer.GetIterAtOffset (end);
buffer.MoveMark (buffer.SelectionBound, start_iter);
buffer.ApplyTag (tag, start_iter, end_iter);
buffer.MoveMark (buffer.InsertMark, end_iter);
}
public static void Deserialize (Gtk.TextBuffer buffer, Gtk.TextIter start, string content)
{
StringReader reader = new StringReader(content);
int intCharacter;
char convertedCharacter;
int offset = start.Offset;
string sbuffer = String.Empty;
Stack<TagStart> stack = new Stack<TagStart> ();
TagStart tag_start;
while (true) {
intCharacter = reader.Read ();
if (intCharacter == -1) break;
convertedCharacter = Convert.ToChar (intCharacter);
if (sbuffer != String.Empty || convertedCharacter == '<') {
sbuffer += convertedCharacter;
if (sbuffer == "<bold>") {
tag_start = new TagStart ();
tag_start.Start = offset;
tag_start.Tag = buffer.TagTable.Lookup ("bold");
stack.Push (tag_start);
sbuffer = String.Empty;
} else if (sbuffer == "<italic>") {
tag_start = new TagStart ();
tag_start.Start = offset;
tag_start.Tag = buffer.TagTable.Lookup ("italic");
stack.Push (tag_start);
sbuffer = String.Empty;
} else if (sbuffer == "</bold>" || sbuffer == "</italic>") {
if (stack.Count > 0) {
tag_start = stack.Pop ();
Gtk.TextIter apply_start, apply_end;
apply_start = buffer.GetIterAtOffset (tag_start.Start);
apply_end = buffer.GetIterAtOffset (offset);
buffer.ApplyTag (tag_start.Tag, apply_start, apply_end);
sbuffer = String.Empty;
}
} else if (sbuffer.Length > 9) {
Gtk.TextIter insert_at = buffer.GetIterAtOffset(offset);
buffer.Insert (ref insert_at, sbuffer);
offset += sbuffer.Length;
sbuffer = String.Empty;
}
} else {
Gtk.TextIter insert_at = buffer.GetIterAtOffset(offset);
buffer.Insert (ref insert_at, convertedCharacter.ToString ());
offset += 1;
}
}
}
protected void ApplySplitTags (Gtk.TextBuffer buffer)
{
foreach (TagData tag in splitTags) {
int offset = GetSplitOffset ();
Gtk.TextIter start = buffer.GetIterAtOffset (tag.start - offset);
Gtk.TextIter end = buffer.GetIterAtOffset (tag.end - offset);
buffer.ApplyTag(tag.tag, start, end);
}
}
