private void SetFont(ref SpannableString converted, IBaseFont font, FontIndexPair pair, FontTag fontTag)
{
//set the text color
if (font.Color != System.Drawing.Color.Empty)
{
converted.SetSpan(new ForegroundColorSpan(font.Color.ToNativeColor()), pair.StartIndex, pair.EndIndex, SpanTypes.ExclusiveInclusive);
}
if (fontTag != null && fontTag.FontAction == FontTagAction.Link)
{
CreateLink(ref converted, font, pair);
}
//set allignment
if (font is Font)
{
Font taggedExtendedFont = font as Font;
if (taggedExtendedFont.Alignment != TextAlignment.None)
{
Layout.Alignment alignment = taggedExtendedFont.Alignment == TextAlignment.Center ? Layout.Alignment.AlignCenter : Layout.Alignment.AlignNormal;
converted.SetSpan(new AlignmentSpanStandard(alignment), pair.StartIndex, pair.EndIndex, SpanTypes.ExclusiveInclusive);
}
}
if (_extendedFont != null)
{
//calculate the relative size to the regular font
converted.SetSpan(new RelativeSizeSpan((float)font.Size / (float)_extendedFont.Size), pair.StartIndex, pair.EndIndex, SpanTypes.ExclusiveInclusive);
}
//set the custom typeface
converted.SetSpan(new CustomTypefaceSpan("sans-serif", DroidAssetPlugin.GetCachedFont(font, _context)), pair.StartIndex, pair.EndIndex, SpanTypes.ExclusiveInclusive);
}
private void CreateLink(ref SpannableString converted, IBaseFont font, FontIndexPair pair)
{
//if theres a link property, use that one, if not, use the text itself
string link;
if (pair.TagProperties != null && pair.TagProperties.ContainsKey("href"))
{
link = pair.TagProperties.GetValueOrDefault("href");
}
else
{
link = converted.ToString().Substring(pair.StartIndex, pair.EndIndex - pair.StartIndex).Trim();
}
converted.SetSpan(new ClickableLinkSpan()
{
Link = link
}, pair.StartIndex, pair.EndIndex, SpanTypes.ExclusiveInclusive);
_clickableFont = font;
_containsLink = true;
}
/// <summary>
/// Set the attributes of a part of the text
/// </summary>
/// <param name="converted">Converted.</param>
/// <param name="pair">Pair.</param>
private void SetAttributed(SpannableString converted, FontIndexPair pair, Font fallbackFont)
{
//get the font by tags
FontTag fontTag = null;
if (pair.FontTag != null)
{
var taggedFont = _assetPlugin.GetFontByTagWithTag(fallbackFont.Name, pair.FontTag.Tag, out fontTag);
if (taggedFont != null)
{
SetFont(ref converted, taggedFont, pair, fontTag);
return;
}
}
if (fallbackFont != null)
{
SetFont(ref converted, fallbackFont, pair, fontTag);
}
}
private void CreateLink(ref NSMutableAttributedString text, ref UIStringAttributes attribute, IBaseFont font, FontIndexPair pair)
{
//if theres a link property, use that one, if not, use the text itself
string link;
if (pair.TagProperties != null && pair.TagProperties.ContainsKey("href"))
{
link = pair.TagProperties.GetValueOrDefault("href");
}
else
{
link = text.Value.Substring(pair.StartIndex, pair.EndIndex - pair.StartIndex).Trim();
}
try
{
attribute.Link = new NSUrl(link);
}
catch (Exception e)
{
MvxBindingLog.Instance.Error($"Cannot convert {link} to url", e.ToLongString());
}
attribute.UnderlineStyle = NSUnderlineStyle.Single;
attribute.UnderlineColor = font.Color.ToNativeColor();
}
private UIStringAttributes CreateAttributesByFont(ref NSMutableAttributedString text, IBaseFont font, FontIndexPair pair = null, FontTag tag = null)
{
UIStringAttributes stringAttributes = new UIStringAttributes {
};
//add the font
stringAttributes.Font = TouchAssetPlugin.GetCachedFont(font);
//add the color
if (font.Color != System.Drawing.Color.Empty)
{
stringAttributes.ForegroundColor = font.Color.ToNativeColor();
}
if (pair != null && tag != null)
{
if (tag.FontAction == FontTagAction.Link)
{
CreateLink(ref text, ref stringAttributes, font, pair);
}
}
if (font is Font)
{
var extendedFont = font as Font;
if (stringAttributes.ParagraphStyle == null)
{
stringAttributes.ParagraphStyle = new NSMutableParagraphStyle();
}
if (extendedFont.Alignment != TextAlignment.None)
{
UITextAlignment alignment = extendedFont.ToNativeAlignment();
stringAttributes.ParagraphStyle.Alignment = alignment;
}
//add the lineheight
stringAttributes.ParagraphStyle.LineSpacing = GetPlatformLineHeight(font.Size, extendedFont.LineHeight);
stringAttributes.ParagraphStyle.LineBreakMode = extendedFont.ToNativeLineBreakMode();
stringAttributes.ParagraphStyle.LineHeightMultiple = extendedFont.LineHeightMultiplier.HasValue ? (float)extendedFont.LineHeightMultiplier.Value : 0f;
}
return(stringAttributes);
}
