/// <summary>
/// Even after taking months to fix a regression that completely broke the use of multiple formats
/// in one subtitle, YouTube still hasn't got the Javascript code down. While changing the background
/// color in the middle of a line now works again, changing it before or after a line break results
/// in the rounded corners disappearing on one side. It doesn't look pretty.
/// The only workaround seems to be to split the subtitle in two.
/// </summary>
private void SplitMultiBackgroundLine(int lineIndex)
{
Line line = Lines[lineIndex];
int numLineBreaks = line.Sections.SelectMany(s => s.Text).Count(c => c == '\n');
if (numLineBreaks != 1)
{
return;
}
int secondSubLineStartSectionIdx = -1;
for (int i = 1; i < line.Sections.Count; i++)
{
Section prevSection = line.Sections[i - 1];
Section section = line.Sections[i];
if ((prevSection.BackColor != section.BackColor || prevSection.Font != section.Font || prevSection.Scale != section.Scale) &&
(prevSection.Text.EndsWith("\r\n") || section.Text.StartsWith("\r\n")))
{
secondSubLineStartSectionIdx = i;
break;
}
}
if (secondSubLineStartSectionIdx < 0)
{
return;
}
Line secondLine = (Line)line.Clone();
line.Sections.RemoveRange(secondSubLineStartSectionIdx, line.Sections.Count - secondSubLineStartSectionIdx);
line.Sections[secondSubLineStartSectionIdx - 1].Text = line.Sections[secondSubLineStartSectionIdx - 1].Text.Replace("\r\n", "");
secondLine.Sections.RemoveRange(0, secondSubLineStartSectionIdx);
secondLine.Sections[0].Text = secondLine.Sections[0].Text.Replace("\r\n", "");
PointF position = line.Position ?? GetDefaultPosition(line.AnchorPoint);
if (AnchorPointUtil.IsTopAligned(line.AnchorPoint))
{
position.Y += VideoDimensions.Height * 0.05f;
line.AnchorPoint = AnchorPointUtil.GetVerticalOpposite(line.AnchorPoint);
}
else if (AnchorPointUtil.IsMiddleAligned(line.AnchorPoint))
{
line.AnchorPoint = AnchorPointUtil.MakeBottomAligned(line.AnchorPoint);
secondLine.AnchorPoint = AnchorPointUtil.MakeTopAligned(secondLine.AnchorPoint);
}
else
{
position.Y -= VideoDimensions.Height * 0.05f;
secondLine.AnchorPoint = AnchorPointUtil.GetVerticalOpposite(secondLine.AnchorPoint);
}
line.Position = position;
secondLine.Position = position;
Lines.Insert(lineIndex + 1, secondLine);
}
private static string GetVerticalAlign(AssStyle style, AssStyleOptions options)
{
if (!(options?.HasExistingBackgroundImage ?? false))
{
return("middle");
}
if (AnchorPointUtil.IsTopAligned(style.AnchorPoint))
{
return("top");
}
if (AnchorPointUtil.IsBottomAligned(style.AnchorPoint))
{
return("bottom");
}
return("middle");
}