Re: GtkSource.PrintCompositor: How to possible printing plain text documents without lost blank lines and indentations?

[Hammer Attila <hammera pickup hu>]

Hi,

I think the last post described exactly what the problem.
I using the pdftotext test only because me not have a Braille printer 
hardware, and any way need verifying the real printed output with equals 
exactly the LiblouisUTDML file2brl command generated formatted text 
braille output file when the printing real happening, character to 
character.

Me have a visual printer, but this verification is not possible, because 
I am a blind person.

With Braille printers insensitive the visual lookup the input text, only 
important when the draw_page function sends the printed output to the 
user selected Braille printer, the already generated text formattings is 
not lost during page drawing (space characters doed indentations, blank 
lines when more blank lines have a page, etc).

In the begin-print signal possible calculating how many Braille pages 
fit the document, simple need divmod the document line numbers with 
lines/page property.

For example, if a document have 29 braille lines, and lines/page 
property is 28 lines, need generating two pages in the begin-print 
signal function the operation.set_n_pages(2) function call.
Me this calculation always estimated right the braille pages count.

Possible in the draving operation need moving the pen the next line if 
have a blank line? If the text more blank lines, possible doing more 
move operations only to move the real paper with the correct position 
when the printing happening a real hardware?

When page draving is happening, Not possible need processing the page 
layout content with layoutLine to layoutLine object, and if the 
layoutLine object text is blank, need moving the pen the next line left 
margin position to resulting a real blank line before the next paragraph?
Left, top, bottom and right margin positions possible querying the 
print_context.get_page_setup() sub functions.

I begin thinking with Pango Layout or CairoContext.show_layout function 
insensitive the \n\n\n\n formatting style text.

When you need drawing a blank line a page, what need you doing the 
draw_page signal?

I not full understanding the line and character positions calculations 
when I need give exactly a line number and a column position coordinates.

Attila