Using SWT, I set the shell transparency with setAlpha(x). But then all widgets have become transparent too. Even adding a "all white" image as a composite background became transparent.So I can't actually do anything on this window.
In the Eclipse Standard Widget Toolkit (SWT) a Shell (org.eclipse.swt.widgets.Shell) represents a window, whereas a JPanel (javax.swing.JPanel) represents only a container in the Java Swing GUI widget toolkit.
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As title shows, recently updated KDE Neon through Discover, and then tried to add widgets. This crashed the entire Plasma shell, and had to be restarted through the command line. Anyone else have this issue? Or are there any workaround solutions apart from simply waiting for more updates
The widgets interface have to be installed. JupyterLab is modular,and some parts need to be installed as an extension. In general,copy and paste the command into a shell (the JupyterLab shell worksfine). See the installation instructions.
The modality of an instance may be specified using style bits. The modality style bits are used to determine whether input is blocked for other shells on the display. The PRIMARY_MODAL style allows an instance to block input to its parent. The APPLICATION_MODAL style allows an instance to block input to every other shell in the display. The SYSTEM_MODAL style allows an instance to block input to all shells, including shells belonging to different applications.
Note: The styles supported by this class are treated as HINTs, since the window manager for the desktop on which the instance is visible has ultimate control over the appearance and behavior of decorations and modality. For example, some window managers only support resizable windows and will always assume the RESIZE style, even if it is not set. In addition, if a modality style is not supported, it is "upgraded" to a more restrictive modality style that is supported. For example, if PRIMARY_MODAL is not supported, it would be upgraded to APPLICATION_MODAL. A modality style may also be "downgraded" to a less restrictive style. For example, most operating systems no longer support SYSTEM_MODAL because it can freeze up the desktop, so this is typically downgraded to APPLICATION_MODAL. Styles: BORDER, CLOSE, MIN, MAX, NO_TRIM, RESIZE, TITLE, ON_TOP, TOOL, SHEET APPLICATION_MODAL, MODELESS, PRIMARY_MODAL, SYSTEM_MODAL Events: Activate, Close, Deactivate, Deiconify, Iconify Class SWT provides two "convenience constants" for the most commonly required style combinations: SHELL_TRIM the result of combining the constants which are required to produce a typical application top level shell: (that is, CLOSE | TITLE | MIN | MAX | RESIZE) DIALOG_TRIM the result of combining the constants which are required to produce a typical application dialog shell: (that is, TITLE | CLOSE | BORDER)
Note: Currently, null can be passed in for the display argument. This has the effect of creating the shell on the currently active display if there is one. If there is no current display, the shell is created on a "default" display. Passing in null as the display argument is not considered to be good coding style, and may not be supported in a future release of SWT.
Note: Currently, null can be passed in for the parent. This has the effect of creating the shell on the currently active display if there is one. If there is no current display, the shell is created on a "default" display. Passing in null as the parent is not considered to be good coding style, and may not be supported in a future release of SWT.
Returns:the dialog shellsThrows:SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver setActivepublic void setActive()If the receiver is visible, moves it to the top of the drawing order for the display on which it was created (so that all other shells on that display, which are not the receiver's children will be drawn behind it) and asks the window manager to make the shell activeThrows:SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver See Also:Control.moveAbove(org.eclipse.swt.widgets.Control), Control.setFocus(), Control.setVisible(boolean), Display.getActiveShell(), Decorations.setDefaultButton(Button), open(), setActive()forceActivepublic void forceActive()If the receiver is visible, moves it to the top of the drawing order for the display on which it was created (so that all other shells on that display, which are not the receiver's children will be drawn behind it) and forces the window manager to make the shell active.Throws:SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since: 1.2See Also:Control.moveAbove(org.eclipse.swt.widgets.Control), Control.setFocus(), Control.setVisible(boolean), Display.getActiveShell(), Decorations.setDefaultButton(Button), open(), setActive()getClientAreapublic Rectangle getClientArea()Description copied from class: ScrollableReturns a rectangle which describes the area of the receiver which is capable of displaying data (that is, not covered by the "trimmings").Overrides:getClientArea in class ScrollableReturns:the client areaSee Also:Scrollable.computeTrim(int, int, int, int)computeTrimpublic Rectangle computeTrim(int x, int y, int width, int height)Description copied from class: ScrollableGiven a desired client area for the receiver (as described by the arguments), returns the bounding rectangle which would be required to produce that client area. In other words, it returns a rectangle such that, if the receiver's bounds were set to that rectangle, the area of the receiver which is capable of displaying data (that is, not covered by the "trimmings") would be the rectangle described by the arguments (relative to the receiver's parent).
The control will not be repositioned synchronously. This method is fast-running and only marks the control for future participation in a deferred layout. Invoking this method multiple times before the layout occurs is an inexpensive no-op.Overrides:requestLayout in class ControlsetActivepublic void setActive()If the receiver is visible, moves it to the top of the drawing order for the display on which it was created (so that all other shells on that display, which are not the receiver's children will be drawn behind it) and asks the window manager to make the shell activeThrows:SWTException - ERROR_WIDGET_DISPOSED - if the receiver has been disposed ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver Since:2.0See Also:Control.moveAbove(org.eclipse.swt.widgets.Control)Control.setFocus()Control.setVisible(boolean)Display.getActiveShell()Decorations.setDefaultButton(Button)open()setActive()setAlphapublic void setAlpha(int alpha)Sets the receiver's alpha value which must be between 0 (transparent) and 255 (opaque). This operation requires the operating system's advanced widgets subsystem which may not be available on some platforms. 0852c4b9a8
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