On 4/29/20 8:29 pm, Prasanta Sadhukhan wrote:
I could understand that we need to use some specific GC instead of null(which is
the default), but a force to use GC instead of another non-null GC sounds not
good, isn't it?
I couldn't get what you are trying to say...You have a problem with using
getPreferredSize() in BasicToolTipUI#paint and you asked why can't we use the same
setSize() as it is now. I found we cannot use that because JPanel.setSize() is wrong
because it's GC was null when the "size" was calculated.
As I mentioned, in the fix you do not replace the null value, but replace any
value if they are not equal to the current screen, is that intentionally?
852 if (component.getGraphicsConfiguration() !=
853 contents.getGraphicsConfiguration()) {
854 AWTAccessor.getComponentAccessor().
855 setGraphicsConfiguration((Component) component,
856
contents.getGraphicsConfiguration());
857 }
If we fix the JPanel's GC with the default GC (the same way we fix ToolTip's
GC) then we can continue to use setSize() in paint. If you do not have problem
with how we fix JTooltip's GC ,then what is the problem with fixing JPanel's GC?
It is unclear why we need to change GC of the panel. In the case of TIP it is
needed to calculate the size of the text which is set to the TIP, but the panel
does not have any text so why the GC of the panel matters?
--
Best regards, Sergey.
