mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-12-26 05:57:00 +03:00
febfb54585
Merged revisions 5118-5155 via svnmerge from svn://svn.netsurf-browser.org/branches/adamblokus/netsurf ........ r5130 | adamblokus | 2008-08-15 20:43:43 +0200 (Fri, 15 Aug 2008) | 2 lines Added docs for loosening and adding paged output. ........ svn path=/trunk/netsurf/; revision=5156
58 lines
2.3 KiB
Plaintext
58 lines
2.3 KiB
Plaintext
Adding paged output
|
|
===================
|
|
|
|
This document is supposed to be a short guide of adding paged output to Netsurf.
|
|
Currently the two pieces of code using the print implementation are PDF export
|
|
and GTK printing.
|
|
|
|
|
|
printer.h
|
|
---------
|
|
The first thing the new paged output has to do is implementing the printer
|
|
interface located in printer.h. It consists of four elements:
|
|
|
|
- plotter. This are the plotters which will be used while redrawing the
|
|
content.
|
|
|
|
- print_begin. This function is called right after the set up and should
|
|
manage all the remaining user-specific initialisation stuff.
|
|
|
|
- print_next_page. This function is called before the actual printing of each
|
|
page allowing to prepare the content to be printed.
|
|
|
|
- print_end. This function is called right before the printing routines clean
|
|
after themselves and should be used for saving the output to a file, freeing
|
|
previously allocated memory, relesing document handles etc.
|
|
|
|
|
|
print.h
|
|
-------
|
|
The provided print interface consists of a set of functions which can be used
|
|
seperately and one integrating them all making the print a matter of one call.
|
|
If it is enough you can just call print_basic_run and wait for it to return.
|
|
However, for the case you can't accompish the printing task this way the print
|
|
interface gives you the possiblity of calling the print steps individually.
|
|
|
|
Only if you are using print_basic_run you can omit specifying the print settings.
|
|
If this is the case the default ones will be used.
|
|
|
|
As you will notice the functions correspond to those you had to implement in the
|
|
printer. The reason for this is adding some flexibility to the system which
|
|
occured necessary i.e in the GTK print implementation.
|
|
|
|
- print_set_up. This sets the printing system up and calls print_begin
|
|
- print_draw_next_page. Here after calling print_next_page one full page of the
|
|
dimensions given in the print settings is plotted
|
|
- print_cleanup. This function is responsible for freeing all used resources
|
|
right after calling print_end
|
|
|
|
|
|
Settings
|
|
--------
|
|
This is where the besic information about the print job is held. You can use one
|
|
of the predifined sets(DEFAULT and OPTIONS) or add your own. In order to do that
|
|
you have to follow this steps:
|
|
|
|
- add your entry to the print_configuration enum
|
|
- add handling of it to the switch in print_make_settings
|
|
- add the entry name to this document |