支持段前分页

range/Advanced/TSPdfParagraphRange.tsf

@@ -141,6 +141,9 @@ begin
     {self.}DynamicHeight += ppr_unit_decorator_.Spacing.Before;
     {self.}SetLvlText();
 
+    if paragraph_.PPr.PageBreakBefore then
+        {self.}CheckAndAddPage({self.}LowerBound, 1);
+
     elements := paragraph_.Elements();
     empty_flag := true;
     bookmark_id := '';