java - JButton, JLabel, JTextArea is flapping while the background color alpha value is set to less then 255 (200) -


i trying set background of jtextarea transparent alpha value 200 , added layerpan, support z index, behind of jtextarea jpanel using playing video, in front jtextarea using show text, works well, jtextarea background flapping. better understanding question please @ image below:

case 1: normal enter image description here

case 2: abnormal enter image description here

in second case, see background not correct, don't want. can problem?

i trying set background of jtextarea transparent alpha value 200

i've never tried playing video , transparent background before in general swing not support transparent backgrounds. transparency breaks painting rules since component neither opaque or transparent.

so need make sure background of parent component painted first. need paint background of component transparency.

check out background transparency more information , simple class painting you.


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