void FormatLabelTextToWrapLayout(WrapLayout wrapLayout, string text, Color color, FontAttributes fontAttributes = FontAttributes.None, LineBreakMode lineBreakMode = LineBreakMode.NoWrap, TapGestureRecognizer tap = null, string urlImg = null)
{
foreach (var line in text.Trim().Split(' '))
{
if (string.IsNullOrWhiteSpace(line))
{
continue;
}
if (text == "img")
{
Image img = new Image();
img.Source = urlImg;
if (tap != null)
{
img.GestureRecognizers.Add(tap);
}
wrapLayout.Orientation = StackOrientation.Vertical;
wrapLayout.Children.Add(img);
}
else
{
Label lb = new Label()
{
FontAttributes = fontAttributes,
LineBreakMode = lineBreakMode,
FontSize = PlatformInvoke.IsWindows ? 15 : 16,
TextColor = color,
Text = line
};
if (tap != null)
{
lb.GestureRecognizers.Add(tap);
}
wrapLayout.Children.Add(lb);
}
}
}
void RenderText_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
if (IsRenderer || MessageHtml == null)
{
return;
}
IsRenderer = true;
// Старт
string SplitBbCode = "_SplitBbCode_";
Color textColor = Color.FromHex("#464646");
#region Начальный текст - (вырезаем весь код форматирования текста и заменяем часть кода на свой)
string message_html = Regex.Replace(MessageHtml, "(<br />|<a [^>]+>([^<]+|<[^<]+>|<[a-z] +[^<]+</[a-z]>)</a>|<img [^>]+>|<[^>]+>|\\<|\\>|\\ |\\")", rg =>
{
// Форматирование
switch (rg.Groups[0].Value)
{
case """: return("\"");
case "<": return("<");
case ">": return(">");
case "</p>":
case "</li>":
case "</code>":
case "<hr>":
case "<br>":
case "<br />": return("<br />");
case "<em>": return($"{SplitBbCode}em:");
case "<strong>": return($"{SplitBbCode}strong:");
case "</em>":
case "</strong>": return($"{SplitBbCode}");
}
// Текста в <h*>*</h*>
if (Regex.IsMatch(rg.Groups[0].Value, "</h[0-9]+>"))
{
return("<br />");
}
// Изображение
if (rg.Groups[0].Value.Contains("src="))
{
return($"{SplitBbCode}img:{new Regex("src=\"([^\"]+)\"").Match(rg.Groups[0].Value).Groups[1].Value}{SplitBbCode}");
}
// Ссылка
if (rg.Groups[0].Value.Contains("href="))
{
var gLink = new Regex("href=\"([^\"]+)\"([^>]+)?>(.*)</a>").Match(rg.Groups[0].Value).Groups;
string title = gLink[3].Value;
title = Regex.Replace(title, "<i +class=\"fa +fa-([^\"]+)\"></i>", "$1");
title = Regex.Replace(title, "<img +src=\"/static/images/fugu/balloon(-|_)([a-z]+)\\..*", "$2");
return($"{SplitBbCode}link:{gLink[1].Value},{title}{SplitBbCode}");
}
// Удаляем
return("");
});
#endregion
// Дебаг
//Debug.WriteLine(MessageHtml);
#region Форматирования текста
bool IsNewLineTwo = false;
var MassItem = Regex.Split(message_html, "<br />");
for (int i = 0; i < MassItem.Length; i++)
{
// Достаем строку
string line = MassItem[i];
// Максимум два \n
if (string.IsNullOrWhiteSpace(line))
{
if (IsNewLineTwo || i == MassItem.Length - 1 || string.IsNullOrWhiteSpace(MassItem[i + 1]))
{
continue;
}
IsNewLineTwo = true;
this.Children.Add(new Label());
continue;
}
else
{
IsNewLineTwo = false;
}
// Костыльный StackLayout
WrapLayout wrapLayout = new WrapLayout
{
Orientation = StackOrientation.Horizontal,
VerticalOptions = LayoutOptions.Start,
HorizontalOptions = LayoutOptions.Start,
Padding = 0,
Spacing = 5
};
#region Формируем текст
foreach (var splitLine in Regex.Split(line, SplitBbCode))
{
if (string.IsNullOrWhiteSpace(splitLine))
{
continue;
}
// BB code
if (Regex.IsMatch(splitLine, "^(em|strong|link|img):"))
{
var grp = new Regex("^(em|strong|link|img):(.*)$").Match(splitLine).Groups;
if (string.IsNullOrWhiteSpace(grp[2].Value))
{
continue;
}
// Стили для текста
switch (grp[1].Value)
{
case "em":
case "strong":
{
FormatLabelTextToWrapLayout(wrapLayout, grp[2].Value, textColor, grp[1].Value == "em" ? FontAttributes.Italic : FontAttributes.Bold);
break;
}
case "img":
{
string url = grp[2].Value.Split(',')[0];
if (!url.Contains("/static/images/fugu/"))
{
goto case "link";
}
wrapLayout.Children.Add(new Image()
{
Source = url.Contains("freelancehunt.com") ? url : $"https://freelancehunt.com/{url}",
HeightRequest = 17,
WidthRequest = 17,
MinimumHeightRequest = 17,
MinimumWidthRequest = 17,
Margin = new Thickness(0, 4, 0, 0),
HorizontalOptions = LayoutOptions.Start,
VerticalOptions = LayoutOptions.Start,
});
break;
}
case "link":
{
string url = grp[2].Value.Split(',')[0];
if (!Regex.IsMatch(url, "^https?://"))
{
url = "https://freelancehunt.com/" + Regex.Replace(url, "^/", "");
}
TapGestureRecognizer tap = new TapGestureRecognizer();
tap.Tapped += (s, et) =>
{
Device.OpenUri(new Uri(url));
};
FormatLabelTextToWrapLayout(wrapLayout, (grp[1].Value == "img" ? "img" : grp[2].Value.Split(',')[1]), Color.FromHex("#6ea6eb"), lineBreakMode: LineBreakMode.TailTruncation, tap: tap, urlImg: url);
break;
}
}
}
// Обычный текст
else
{
FormatLabelTextToWrapLayout(wrapLayout, splitLine, textColor);
}
}
this.Children.Add(wrapLayout);
#endregion
}
#endregion
}
