A utility class for dynamic handling of changes to screen properties. More...

#include <qgsscreenhelper.h>

Inheritance diagram for QgsScreenHelper:

Signals
void	availableGeometryChanged (const QRect &geometry)
	Emitted whenever the available geometry of the screen associated with the widget is changed.

void	screenDpiChanged (double dpi)
	Emitted whenever the screen dpi associated with the widget is changed.

Public Member Functions
	QgsScreenHelper (QWidget *parent)
	Constructor for QgsScreenHelper for the specified parent widget.

QRect	availableGeometry () const
	Returns the current screen available geometry in pixels.

QScreen *	screen ()
	Returns the screen that the parent widget appears on, or `nullptr`.

double	screenDpi () const
	Returns the current screen DPI for the screen that the parent widget appears on.

QWindow *	windowHandle ()
	Returns the window handle for the window the parent widget is associated with, or `nullptr`.

Protected Member Functions
bool	eventFilter (QObject watched, QEvent event) override

Detailed Description

A utility class for dynamic handling of changes to screen properties.

Since: QGIS 3.28

Definition at line 35 of file qgsscreenhelper.h.

Constructor & Destructor Documentation

◆ QgsScreenHelper()

QgsScreenHelper::QgsScreenHelper ( QWidget * parent )

Constructor for QgsScreenHelper for the specified parent widget.

Definition at line 24 of file qgsscreenhelper.cpp.

Member Function Documentation

◆ availableGeometry()

QRect QgsScreenHelper::availableGeometry ( ) const

inline

Returns the current screen available geometry in pixels.

The available geometry is the geometry excluding window manager reserved areas such as task bars and system menus.

See also: availableGeometryChanged()

Definition at line 70 of file qgsscreenhelper.h.

◆ availableGeometryChanged

void QgsScreenHelper::availableGeometryChanged ( const QRect & geometry )

signal

Emitted whenever the available geometry of the screen associated with the widget is changed.

See also: availableGeometry()

◆ eventFilter()

bool QgsScreenHelper::eventFilter	(	QObject *	watched,
		QEvent *	event
	)

overrideprotected

Definition at line 48 of file qgsscreenhelper.cpp.

◆ screen()

QScreen * QgsScreenHelper::screen ( )

Returns the screen that the parent widget appears on, or nullptr.

Definition at line 31 of file qgsscreenhelper.cpp.

◆ screenDpi()

double QgsScreenHelper::screenDpi ( ) const

inline

Returns the current screen DPI for the screen that the parent widget appears on.

See also: screenDpiChanged()

Definition at line 61 of file qgsscreenhelper.h.

◆ screenDpiChanged

void QgsScreenHelper::screenDpiChanged ( double dpi )

signal

Emitted whenever the screen dpi associated with the widget is changed.

See also: screenDpi()

◆ windowHandle()

QWindow * QgsScreenHelper::windowHandle ( )

Returns the window handle for the window the parent widget is associated with, or nullptr.

Definition at line 40 of file qgsscreenhelper.cpp.

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

/build/qgis-3.40.0+99sid/src/gui/qgsscreenhelper.h
/build/qgis-3.40.0+99sid/src/gui/qgsscreenhelper.cpp

Signals

Public Member Functions

Protected Member Functions