pr6312_jmeter

Huge thanks to @KingRabbid for adding the functionality and a bunch of new themes.

These changes add a lot of new themes for JMeter. The changes were extracted and compiled for JMeter 5.6.3 from pull request #6312 in the official JMeter repository (apache/jmeter#6312). All .class files need to be placed in %jmeter%/lib/ext/ApacheJMeter_core.jar (the .jar file can be opened with 7z or WinRar). Additionally, the files flatlaf-3.4.1.jar and flatlaf-intellij-themes-3.4.1.jar need to be placed in %jmeter%/lib.

IMPORTANT!!! Before modifying the original .class files, save a copy of ApacheJMeter_core.jar for rollback.

Below are the full replacement paths for the .class files:

ApacheJMeter_core.jar\org\apache\jmeter

• SplashScreen.class

ApacheJMeter_core.jar\org\apache\jmeter\gui

• LoggerPanel.class
• MainFrame.class
• MainFrame$1.class
• MainFrame$WindowHappenings.class
• MainFrame$QuickComponent.class
• MainFrame$ErrorsAndFatalsCounterLogTarget.class

ApacheJMeter_core.jar\org\apache\jmeter\gui\action

• LookAndFeelCommand.class
• LookAndFeelCommand$MenuItem.class

ApacheJMeter_core.jar\org\apache\jmeter\gui\util

• JMeterMenuBar.class
• JMeterMenuBar$LangMenuHelper.class
• JSyntaxTextArea.class
• JSyntaxTextArea$1.class

New fields for theme configuration have also appeared in jmeter.properties. It is not mandatory to insert them.