Use TTF fonts for avatar generation

[rullzer]

Fixes#8189

Use ttf fonts for avatar generation. So it also works on CentOS

Could any of you test this (should apply pretty easy on 13): @Temtaime@tmaff@dec1pher @MrLordy @splitt3r

[thegcat]

I had the same issue in the same circumstances and this seems to have fixed the issue for see, thanks!

[ghost]

Fixed the issue. Thanks!

[rullzer]

Thanks for testing! I'll make sure this also lands in 13.0.1

[ChristophWurst]

Didn't test but makes sense to use these fonts if that fixes the issue with Centos

[splitt3r]

Fixed the issue for me too 👍

[Franck2A]

In my side, the patch fixed the message error log but still no profil letter avatar.
RHEL 7.4 (CENTOS)

[rullzer]

@Franck2A did you change the display name of the user? So the avatar gets regenerated?

[Franck2A]

@rullzer Tnx for your response, how to change display name ? I'm using ldap authenticated.
Please help, regards

[splitt3r]

You could also upload a dummy avatar and delete it so the default one gets regenerated. Did the job for me.

[Franck2A]

@splitt3r Tnx that's work find on my account. Is it possible to do it massively for all accounts ?
Regards

[susadm]

Not working for me :(
Centos 7 NExtcloud 13
After downloading the fonts and changing the Avatar.ini there are still no letters and the error is still present

imagettftext(): Could not read font at /var/www/html/nextcloud/lib/private/Avatar.php#266	2018-02-21T14:16:31+0100
Error	PHP

I have changed the name of an user and created a new one...

drwxr-xr-x. 2 apache apache 4096 Feb 21 13:57 .
drwxr-xr-x. 17 apache apache 4096 Feb 10 21:29 ..
-rw-r--r--. 1 apache apache 11560 Feb 10 21:29 LICENSE.txt
-rw-r--r--. 1 apache apache 156148 Feb 21 13:56 OpenSans-Light.ttf
-rw-r--r--. 1 apache apache 62844 Feb 10 21:29 OpenSans-Light.woff
-rw-r--r--. 1 apache apache 217360 Feb 10 21:29 OpenSans-Regular.ttf
-rw-r--r--. 1 apache apache 20544 Feb 10 21:29 OpenSans-Regular.woff
-rw-r--r--. 1 apache apache 156735 Feb 21 13:57 OpenSans-Semibold.ttf
-rw-r--r--. 1 apache apache 69888 Feb 10 21:29 OpenSans-Semibold.woff

Avater.ini

$background = imagecolorallocate($im, $backgroundColor[0], $backgroundColor[1], $backgroundColor[2]);
$white = imagecolorallocate($im, 255, 255, 255);
imagefilledrectangle($im, 0, 0, $size, $size, $background);

 $font = __DIR__ . '/../../core/fonts/OpenSans-Semibold.ttf';
$fontSize = $size * 0.4;
$box = imagettfbbox($fontSize, 0, $font, $text);
$x = ($size - ($box[2] - $box[0])) / 2;
$y = ($size - ($box[1] - $box[7])) / 2;
$x += 1;

any Idea?