Make backgroundColor, textColor and axisColor of a graph customizable via URL parameters.
This is interesting for new mobile app.
New mobile app with pretty graphs FTW
Graph does not have to look like the attachment but would be great to be able to set backgroundColor, textColor and axisColor to those colors via URL parameter.
@JulienM do you think you'll find some time to implement this in the next 4-6 weeks? Otherwise I'll maybe have a look at it
Yes I can have a look at it.
Could you give me examples of colors for each parameter?
Also, will you need to specify transparency for the background (and eventually for the other parameters) ?
Also, should it be possible to set the legend font color differently from the axes values font color?
I have committed in my repo three new ImageGraph API parameters $textColor, $backgroundColor and $gridColor : https://github.com/JulienMoumne/piwik/commit/cd811234e4b838f651ef0ef5d1218175e19d204d
If you can, do tell me if this is what you are looking for.
oh cool! Thx for working on that so fast. I will test it tomorrow.
From what I see you may need more granularity than what I implemented. Do tell me after testing if this is the case.
Looks good so far! Aweseome! See attachment piwikGraph_1.png. The only missing thing I need in addition is to be able to change the color of a line / bar (which is currently blue by default). I need to set it to "#cb2026". I need to change it only for static graphs, not for evolution graphs where 5 or 6 different colors are used.
To change the color of the line and/or bars, try to use &colors=FF00FF on my branch commit.
Works perfect! You made my day! Thanks!
BTW: Not sure if it is related: When using this url to generate the graph:
I'm getting this error which seems to only occur when graph is an evolution graph:
Warning: array_merge(): Argument <a href='/2'>#2</a> is not an array in /var/www/piwik/plugins/ImageGraph/StaticGraph.php on line 268 Backtrace --> <a href='/0'>#0</a> Piwik_ErrorHandler(...) called at [:] <a href='/1'>#1</a> array_merge(...) called at [/var/www/piwik/plugins/ImageGraph/StaticGraph.php:268] <a href='/2'>#2</a> Piwik_ImageGraph_StaticGraph->initpImage(...) called at [/var/www/piwik/plugins/ImageGraph/StaticGraph.php:279] <a href='/3'>#3</a> Piwik_ImageGraph_StaticGraph->getTextWidthHeight(...) called at [/var/www/piwik/plugins/ImageGraph/StaticGraph/Exception.php:55] <a href='/4'>#4</a> Piwik_ImageGraph_StaticGraph_Exception->renderGraph(...) called at [/var/www/piwik/plugins/ImageGraph/API.php:486] <a href='/5'>#5</a> Piwik_ImageGraph_API->get(...) called at [:] <a href='/6'>#6</a> call_user_func_array(...) called at [/var/www/piwik/core/API/Proxy.php:187] <a href='/7'>#7</a> Piwik_API_Proxy->call(...) called at [/var/www/piwik/core/API/Request.php:138] <a href='/8'>#8</a> Piwik_API_Request->process(...) called at [/var/www/piwik/plugins/API/Controller.php:25] <a href='/9'>#9</a> Piwik_API_Controller->index(...) called at [:] <a href='/10'>#10</a> call_user_func_array(...) called at [/var/www/piwik/core/FrontController.php:125] <a href='/11'>#11</a> Piwik_FrontController->dispatch(...) called at [/var/www/piwik/index.php:47]
You will still have an exception but this time it will be more explicit.
Seems to be fixed. The following error message is displayed within the graph now:
API returned an error. Refererrs.getAll with multiple sites or dates is not supported (yet).
But that's another issue which has nothing to do with the colors (API should not return an evolution graph url for this report). Refererrs.getRefererType works fine.
It seems there is an issue with metadata indeed. Could you create a separate ticket for the metadata issue?
Concerning the current ticket, could you confirm you have all you needed and that we can commit and close the ticket?
I can confirm I have all I needed. Thx again!
Will open a separate ticket for the other metadata issue.
In cd811234e4b838f651ef0ef5d1218175e19d204d: refs #3799 new ImageGraph API parameters $textColor, $backgroundColor and $gridColor (missing updated expected integration files)
In d189d5a29a3b4fd4f938bd180fee7aa72e8c5cce: refs #3799 new parameter $textColor is required to render exceptions
In a57ca6ada254b91cc11d25d5f58fdc525ae0d232: fixes #3799 update expected integration files
every text is now of the same color
legend text color was and remains 222222
axes figures was 000000 and becomes 222222
excellent, I can't wait to see the new graphs that result of this ;-)
@Julien I found a small issue... which isn't highly critical. The backgroundColor is not applied if an error message like "No data for this graph" is displayed. See for instance this url:
The backgroundColor should be "#efefef" instead of white.
In 25a5ac6a3a272a646e7bbe6c913271ed6e96abb1: fixes #3799 apply colors to exception message