Plugin uses GD extension with freetype enabled, but doesn't do required/optional in a environment.xml

[danowar2k]

Moodle provides the ability to do an environment.xml where you describe which PHP version or PHP extensions your plugin needs.

Moodle core requires the GD extension, but doesn't check apart from "is this extension present".

You use freetype only functions, namely imagettfbbox():

mod_learningmap/classes/mapworker.php

Line 261 in 5ada8bc

$bbox = imagettfbbox(20, 0, $CFG->dirroot . '/lib/default.ttf', $text->nodeValue);

Could you add an environment.xml with a "required" for GD and an "optional check" with a custom function checking if freetype is enabled?

It would help others to determine the requirements to use this plugin better.

Or you could just replace the function with something else ;-)

[danowar2k]

Relevant Moodle core issue: https://tracker.moodle.org/browse/MDL-58999

Issue in some other plugin we're using: jleyva/moodle-block_configurablereports#233

[PhMemmel]

@danowar2k Would you mind testing the linked PR against the environment you experienced the issue?

[danowar2k]

Sorry had advisory absolutely no time to confirm this...