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We are probably not going to implement theming in the near future (#177), but a cheap and useful alternative would be to just allow 'logo' theming of Piwik. We would still mention 'Piwik' all over the place (too much work to do otherwise), but customizing the logo would be good enough for a start.
See also #1148
Implementation proposal: currently the Piwik logo is a text, but it could be changed to an image. There are a few places where it is displayed:
There could be a new section in the 'General Settings' admin tab, that would allow to upload a .PNG or .JPG logo picture.
The image would then be resized to fit the product header, resized for the login screen and error messages (slightly different sizes).
The admin setting could be:
(x) Use Piwik Logo
( ) Use Custom logo <img src='show current logo'> (when this is clicked, also display "Upload logo" which would overwrite the current logo if any).
The setting could be recorded in the piwik_option table. The logo would be renamed to custom-logo.png so there is no need to record the 'custom logo filename'.
In the code a few places are calling Piwik::getLogoPath() as a helper returning the icon path.
I think we should implement this as soon as possible, as many users need it and edit Piwik manually after each update, resulting in frustration and risk to delay updates.
We can't remove all occurrences of "Piwik" in the software, since in many help pages or help texts, we link to piwik.org. But in these cases it makes sense and it is actually going to help users in most cases.
The goal here is to really allow web agencies, corporations and anyone to easily customize their daily experience with their main logo.
Are there other easy things we can add in that would help?
increasing priority since it has so many requests + is easy to implement.
if anyone wants to contrib a patch please shout
Since we can't remove all occurrences of "Piwik", perhaps we could add a caption below any third-party logo that gets used, e.g., "Powered by Piwik".
A very cool side effect would be that the Piwik Mobile App also displays the custom logo in the App. We couldn't change the logo on the Android or Apple marketplace, but the in-app logo could show the custom logo.
The logo would be uploaded in a static URL (eg. http://piwik/themes/logo.png) and the Mobile App and other consumers could load & cache it. Maybe we could have an API function to return the logo URL (API.getLogoUrl() ?)
(In ) fixes #2008 added possibility to define custom logo
(In ) Refs #2008
re: comment:5 I was thinking more along the lines of adding "powered by piwik" as text below the rescaled logo using imagettftext.
Otherwise good work. I would recommend adding a nonce or token auth check to prevent someone from arbitrarily uploading a new logo.
(In ) Refs #2008
adding powered by piwik on the logo itself would lower the interestingness of customizing logo. Adding credits on login page + many mentions of Piwik across products credit us properly :) Just in Email & PDF maybe we could add a little "Powered by Piwik" in the footer...
(In ) Kuddos Anthon for spotting this Refs #2008
The reason I suggested it was because there's a disconnect between a custom logo and what the user will see in the documentation and translations.
(In ) refs #2008 - check that file_uploads is enabled, temp file exists, allow image/gif, and use PIWIK_DOCUMENT_ROOT where applicable
Some users are reporting in http://forum.piwik.org/read.php?2,78325 the logo has a fixed http:// url which is not appropriate for accessing Piwik in https. Is it related to this ticket ?
Reported in #2501.