Container widget for overlay positioning that correctly clears its background. More...

#include <QmitkOverlayContainerWidget.h>

Inheritance diagram for QmitkOverlayContainerWidget:

Collaboration diagram for QmitkOverlayContainerWidget:

Public Member Functions
	QmitkOverlayContainerWidget (QWidget *parent=nullptr, Qt::WindowFlags f={})
	Constructor. More...

	~QmitkOverlayContainerWidget () override
	Destructor. More...

Protected Member Functions
void	paintEvent (QPaintEvent *event) override
	Clears the widget background with transparency before painting. More...

Detailed Description

Container widget for overlay positioning that correctly clears its background.

This widget overrides the paintEvent method to use CompositionMode_Clear before painting, ensuring a fully transparent background. This is necessary for proper overlay rendering when using high-DPI scaling (QT_DEVICE_PIXEL_RATIO).

See also: QmitkOverlayController; QmitkOverlay

Definition at line 33 of file QmitkOverlayContainerWidget.h.

Constructor & Destructor Documentation

◆ QmitkOverlayContainerWidget()

QmitkOverlayContainerWidget::QmitkOverlayContainerWidget	(	QWidget *	parent = `nullptr`,
		Qt::WindowFlags	f = `{}`
	)

Constructor.

Parameters

[in]	parent	Optional parent widget.
[in]	f	Optional window flags.

◆ ~QmitkOverlayContainerWidget()

QmitkOverlayContainerWidget::~QmitkOverlayContainerWidget ( )

override

Destructor.

Member Function Documentation

◆ paintEvent()

void QmitkOverlayContainerWidget::paintEvent ( QPaintEvent * event )

overrideprotected

Clears the widget background with transparency before painting.

Parameters

[in] event The paint event (unused).

The documentation for this class was generated from the following file:

QmitkOverlayContainerWidget.h