WebPopOver with WebLookAndFeel.setDecorateDialogs(true) on Linux

[renato]

When I create a WebPopOver and place it relative to a WebButton, having WebLookAndFeel to decorate dialogs (setDecorateDialogs(true)), the popover gets decorated as well, incorrectly.

I'm using Linux.

[mgarin]

I have committed the fix for this particular issue, WebPopOver was indeed decorated with dialog-like style in case dialog laf decoration is switched on. That was a general issue btw, not just for Linux.

Though I am not sure that WebPopOver will work normally on Linux systems due to per-pixel window transparency issues on Linux systems in Java. Due to those issues I have disabled per-pixel transparency on Linux systems (enabled only on Windows, Mac OS X and Solaris) - you can see that in ProprietaryUtils source code:

    /**
     * Returns whether window transparency is supported on current OS or not.
     *
     * @return true if window transparency is supported on current OS; false otherwise
     */
    public static boolean isWindowTransparencyAllowed ()
    {
        try
        {
            // Replace when Unix-systems will have proper support for transparency
            // com.sun.awt.AWTUtilities.isTranslucencySupported ( com.sun.awt.AWTUtilities.Translucency.PERPIXEL_TRANSPARENT )
            return SystemUtils.isWindows () || SystemUtils.isMac () || SystemUtils.isSolaris ();
        }
        catch ( final Throwable e )
        {
            return false;
        }
    }

Though I have added a special switch (also available with next update) so you can test whether per-pixel transparency works for you or not:

WebLookAndFeel.setAllowLinuxTransparency ( true );

Use this line of code anywhere before the transparent windows initialization. If you will see grayed/distorted windows after enabling this - it seems that JDK (or OS - but that is less probably) still have the same issues.

[mgarin]

Fix and changes are now available in v1.28 update:
https://github.com/mgarin/weblaf/releases/tag/v1.28