sumatra notes on link handling (made with https://codeeval.dev)

sumatra.txt

Custom draw tree view notes:
https://docs.microsoft.com/en-us/windows/win32/controls/about-custom-draw
https://docs.microsoft.com/en-us/windows/win32/controls/nm-customdraw-tree-view
https://deweymao.github.io/c/c++/2017/06/04/custom_draw_implementation_of_tree_view_control.html
https://github.com/search?l=C%2B%2B&q=NM_CUSTOMDRAW&type=Code
https://www.codeguru.com/cpp/controls/treeview/misc-advanced/article.php/c651/Custom-Draw-Tree-Control.htm

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In old:
FZ_LINK_LAUNCH
file_spec = "C1.jpg"
embedded_num = 3183
PdfLink::GetValue() returns "C1.jpg"
GetDestType() -> LaunchEmbedded
calls link->SaveEmbedded()

New code:
fz_outline
pdf_parse_link_action (dict A)

Types of links in outline
GoTo -> Destination


Destination (dict D):
pdf_parse_link_dest
  Name
  String

  Array
    first el is pageNo
    second is: XYZ, FitR, FitH, FitBH, FitV, FitBV
    represented as "#{pageNo+1},${x},${y}"
 
  remaining:
  "#${pageNo+1}"
  
pdf_resolve_link
  parses "#{pageNo},${x},${y}" => pageNo, &x, &x floats

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void
pdf_annot_color(fz_context *ctx, pdf_annot *annot, int *n, float color[4])
{
	pdf_obj *c = pdf_dict_get(ctx, annot->obj, PDF_NAME(C));
	pdf_annot_color_imp(ctx, c, n, color);
}

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