Change font color while in invert in Evince pdf reader

[Evan I S]

Greeting!

I am looking for a step by step approach to change font color in evince while it is in invert mode by pressing ctrl + i in Ubuntu 14.04. I want the font color to be green #00EE00 hex. When googled I saw some people did it but nowhere on how to. Thus I came down to post a thread. One clue I found is that must something to do with c file called "ev-document-misc.c". I need to know the exact path for it and which line to edit to cause the font color change. I look forward to hearing from you geeks!

https://git.gnome.org/browse/evince/tree/libdocument/ev-document-misc.c

[mc4man]

That's a source file, any changes would require re-compiling the source.
In any event don't believe that would do you any good, evince is simply inverting all the colors of a pdf, not changing anything in a single color specific manner

[Evan I S]

@mc4man: Thank you for your reply. Yes even recompiling the source codes with step by step guide will be doable. Please tell me on how to if you know.

1. [evince] How to change the font color in evince
https://mail.gnome.org/archives/evince-list/2011-November/msg00015.html

"I am using debian 6.0 and the version of evince's source code is 2.30.3.

I modified the evince's source code in order to change the behavior of "Inverted Colors". When I select the "Inverted Colors", the background color will turn to light green instead of simply being inverted:

libdocument/ev-document-misc.c:

300 void
301 ev_document_misc_invert_surface (cairo_surface_t *surface) {
......
323 for (y = 0; y < height; y++) {"


2. How to change pdf background color in evince?
http://askubuntu.com/questions/191579/how-to-change-pdf-background-color-in-evince

There was a person commented who was able to do it. Look at the end devav2's comment which pasted below for convenience :

"Yes it is very much possible. After your comment I just went through the evince source code and found this.ev-document-misc.c (http://git.gnome.org/browse/evince/tree/libdocument/ev-document-misc.c) holds the inverted color section if (inverted_colors) cairo_set_source_rgb (cr, 0, 0, 0); else. So by changing this i think we can achieve our desired color but i haven't compiled and tested this. You can try your luck. – devav2 (http://askubuntu.com/users/49542/devav2)Sep 23 '12 at 6:15 (http://askubuntu.com/questions/191579/how-to-change-pdf-background-color-in-evince#comment238146_191582)"

[Evan I S]

@mc4man: Thank you for your reply. Yes even recompiling the source codes with step by step guide will be doable. Please tell me on how to if you know.

1. [evince] How to change the font color in evince
https://mail.gnome.org/archives/evince-list/2011-November/msg00015.html

"I am using debian 6.0 and the version of evince's source code is 2.30.3.

I modified the evince's source code in order to change the behavior of "Inverted Colors". When I select the "Inverted Colors", the background color will turn to light green instead of simply being inverted:

"libdocument/ev-document-misc.c:

300 void
301 ev_document_misc_invert_surface (cairo_surface_t *surface) {
......
323 for (y = 0; y < height; y++) {
324 guchar *p = data + y * rowstride;
325
326 for (x = 0; x < width; x++) {
327 //p[0] = 255 - p[0];
328 //p[1] = 255 - p[1];
329 //p[2] = 255 - p[2];
330 // this will turn the background color to light green
331 p[0] = 204; // cc
332 p[1] = 232; // e8
333 p[2] = 207; // cf
334 p += 4;
335 }
336 }"


2. How to change pdf background color in evince?
http://askubuntu.com/questions/191579/how-to-change-pdf-background-color-in-evince

There was a person commented that was able to do it. Look at the end devav2's comment that is :

"Yes it is very much possible. After your comment I just went through the evince source code and found this.ev-document-misc.c (http://git.gnome.org/browse/evince/tree/libdocument/ev-document-misc.c) holds the inverted color section if (inverted_colors) cairo_set_source_rgb (cr, 0, 0, 0); else. So by changing this i think we can achieve our desired color but i haven't compiled and tested this. You can try your luck. – devav2 (http://askubuntu.com/users/49542/devav2)Sep 23 '12 at 6:15 (http://askubuntu.com/questions/191579/how-to-change-pdf-background-color-in-evince#comment238146_191582)"

[mc4man]

As far as askubuntu - "There was a person commented that was able to do it" Not really, he offered no changes & didn't try
As far as the other link.
In that case the person commented out (//) the current /* Change the RGB values*/ section & inserted a single defined color. Sounds like he/she wasn't totally pleased with the results.

In any event that was several years ago & while a similar section of code is still there I don't think those changes are going to achieve much, may just alter the thumbnails in invert