Utilities: Add Logging Filter

[HTRamsey]

Adds a custom filter function for the logging categories which can allow easier/finer control of the enabled categories.
Also could collect the registered categories here and remove the custom QGCLoggingCategory class.

Fixes a debug output issue too.

[dakejahl]

On the topic of logging, can we move the log namespace as a prefix?

current

82.241 - debug: UDP State Changed: QAbstractSocket::ClosingState (qgc.comms.udplink:UDPWorker::setupSocket()::<lambda(QAbstractSocket::SocketState)>:302)

suggested

qgc.comms.udplink:: 82.241 - debug: UDP State Changed: QAbstractSocket::ClosingState (UDPWorker::setupSocket()::<lambda(QAbstractSocket::SocketState)>:302)

[HTRamsey]

Yup, it's just changing the order here if you want to make a PR
Would be nice if you could get it space aligned somehow too

[Copilot]

Pull Request Overview

Adds a custom filter callback for QLoggingCategory to automatically register new “qgc.*” categories and streamlines video logging rules, while also updating the core QGCLogging class.

• Introduces qgcCategoryFilter to wrap and extend the default Qt category filter
• Replaces explicit video manager category rules with a wildcard
• Updates QGCLogging class: adds destructor logging, refines message pattern, and renames logging category

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/Utilities/QGCLoggingCategory.cc	Implements custom category filter, registers new categories, simplifies video rules
src/Utilities/QGCLogging.h	Declares ~QGCLogging()
src/Utilities/QGCLogging.cc	Changes category name, refines message handler, adds destructor log, updates pattern

Comments suppressed due to low confidence (3)

src/Utilities/QGCLoggingCategory.cc:19

• The new filter logic around defaultCategoryFilter and qgcCategoryFilter isn’t covered by existing tests. Consider adding unit tests to verify both the default filter invocation and automatic category registration.

static QLoggingCategory::CategoryFilter defaultCategoryFilter = nullptr;

src/Utilities/QGCLoggingCategory.cc:19

• [nitpick] The name defaultCategoryFilter may be ambiguous; consider renaming to something like previousCategoryFilter or originalCategoryFilter for clearer intent.

static QLoggingCategory::CategoryFilter defaultCategoryFilter = nullptr;

src/Utilities/QGCLoggingCategory.cc:21

• The CategoryFilter callback must return a bool to indicate if logging is enabled; qgcCategoryFilter is declared void and does not return a value. Change its signature to return bool and return the combined result of defaultCategoryFilter(category) and your custom registration logic.

static void qgcCategoryFilter(QLoggingCategory *category)

[Copilot]

[nitpick] This commented-out call is left over in the filter callback; if it’s no longer needed, it should be removed to keep the code clean and maintainable.

Suggested change

// category->setEnabled(QtDebugMsg, true);