Provides a widget with a slider to change the level and window value of the current image. More...

#include <QmitkSliderLevelWindowWidget.h>

Inheritance diagram for QmitkSliderLevelWindowWidget:

Collaboration diagram for QmitkSliderLevelWindowWidget:

Public Member Functions
	QmitkSliderLevelWindowWidget (QWidget *parent=nullptr, Qt::WindowFlags f=nullptr)
	constructor More...

	~QmitkSliderLevelWindowWidget ()
	destructor More...

void	setLevelWindowManager (mitk::LevelWindowManager *levelWindowManager)
	sets the manager who is responsible to collect and deliver changes on Level/Window More...

void	setDataStorage (mitk::DataStorage *ds)
	sets the DataStorage which holds all image-nodes More...

mitk::LevelWindowManager *	GetManager ()
	returns the manager who is responsible to collect and deliver changes on Level/Window More...

Public Attributes
mitk::LevelWindow	m_LevelWindow

mitk::LevelWindowManager::Pointer	m_Manager
	manager who is responsible to collect and deliver changes on Level/Window More...

Protected Slots
void	hideScale ()
	hides the scale if "Hide Scale" is selected in contextmenu More...

void	showScale ()
	shows the scale if "Show Scale" is selected in contextmenu More...

Protected Member Functions
virtual void	update ()
	recalculate the size and position of the slider bar More...

void	paintEvent (QPaintEvent *e) override

void	mouseMoveEvent (QMouseEvent *mouseEvent) override

void	enterEvent (QEvent *event) override

void	mousePressEvent (QMouseEvent *mouseEvent) override

void	mouseReleaseEvent (QMouseEvent *mouseEvent) override

virtual void	resizeEvent (QResizeEvent *event) override

Protected Attributes
QRect	m_Rect

QPoint	m_StartPos

bool	m_Resize

bool	m_Bottom

bool	m_MouseDown

bool	m_Leftbutton

bool	m_CtrlPressed

int	m_MoveHeight

bool	m_ScaleVisible

QRect	m_LowerBound

QRect	m_UpperBound

unsigned long	m_ObserverTag

bool	m_IsObserverTagSet

QFont	m_Font

QmitkLevelWindowWidgetContextMenu *	m_Contextmenu

Detailed Description

Provides a widget with a slider to change the level and window value of the current image.

This documentation actually refers to the QmitkLevelWindowWidget and is only put in this class due to technical issues (should be moved later).

The QmitkLevelWindowWidget is a kind of container for a QmitkSliderLevelWindowWidget (this is the cyan bar above the text input fields) and a QmitkLineEditLevelWindowWidget (with two text input fields). It holds a reference to a mitk::LevelWindowManager variable, which keeps the LevelWindowProperty of the currently selected image. Level/Window is manipulated by the text inputs and the Slider to adjust brightness/contrast of a single image. All changes on the slider or in the text input fields affect the current image by giving new values to LevelWindowManager. LevelWindowManager then sends a signal to tell other listeners about changes.

Which image is changed is determined by mitkLevelWindowManager. If m_AutoTopMost is true, always the topmost image in data tree (layer property) is affected by changes. The image which is affected by changes can also be changed by QmitkLevelWindowWidgetContextMenu, the context menu for QmitkSliderLevelWindowWidget and QmitkLineEditLevelWindowWidget. There you have the possibility to set a certain image or always the topmost image in the data tree (layer property) to be affected by changes.

The internal mitk::LevelWindow variable contains a range that is valid for a given image. It should not be possible to move the level/window parameters outside this range. The range can be changed and reset to its default values by QmitkLevelWindowWidgetContextMenu, the context menu for QmitkSliderLevelWindowWidget and QmitkLineEditLevelWindowWidget.

Now for the behaviour of the text inputs: The upper one contains the value of the level (brightness), the lower one shows the window (contrast).

The behaviour of the cyan bar is more obvious: the scale in the background shows the valid range. The cyan bar in front displays the currently selected level/window setting. You can change the level by dragging the bar with the left mouse button or clicking somewhere inside the scalerange with the left mouse button. The window is changed by moving the mouse on the upper or lower bound of the bar until the cursor becomes an vertical double-arrowed symbol. Then you can change the windowsize by clicking the left mouse button and move the mouse upwards or downwards. The bar becomes greater upwards as well as downwards. If you want to change the size of the window in only one direction you have to press the CTRL-key while doing the same as mentioned above. This information is also presented by a tooltip text when moving the mouse on the upper or lower bound of the bar.

Definition at line 81 of file QmitkSliderLevelWindowWidget.h.

Constructor & Destructor Documentation

QmitkSliderLevelWindowWidget::QmitkSliderLevelWindowWidget	(	QWidget *	parent = `nullptr`,
		Qt::WindowFlags	f = `nullptr`
	)

constructor

Constructor

Definition at line 33 of file QmitkSliderLevelWindowWidget.cpp.

References m_Bottom, m_Contextmenu, m_CtrlPressed, m_Font, m_IsObserverTagSet, m_Manager, m_MouseDown, m_MoveHeight, m_ObserverTag, m_Resize, m_ScaleVisible, mitk::New(), mitk::LevelWindowManager::New(), and update().

QmitkSliderLevelWindowWidget::~QmitkSliderLevelWindowWidget ( )

destructor

Definition at line 61 of file QmitkSliderLevelWindowWidget.cpp.

References m_IsObserverTagSet, m_Manager, and m_ObserverTag.

Member Function Documentation

void QmitkSliderLevelWindowWidget::enterEvent ( QEvent * event )

overrideprotected

Definition at line 392 of file QmitkSliderLevelWindowWidget.cpp.

References mouseMoveEvent().

mitk::LevelWindowManager * QmitkSliderLevelWindowWidget::GetManager ( )

returns the manager who is responsible to collect and deliver changes on Level/Window

Definition at line 532 of file QmitkSliderLevelWindowWidget.cpp.

References m_Manager.

void QmitkSliderLevelWindowWidget::hideScale ( )

protectedslot

hides the scale if "Hide Scale" is selected in contextmenu

Definition at line 515 of file QmitkSliderLevelWindowWidget.cpp.

References m_ScaleVisible, and update().

void QmitkSliderLevelWindowWidget::mouseMoveEvent ( QMouseEvent * mouseEvent )

overrideprotected

method implements the component behaviour

checks if cursor is on upper or lower bound of slider bar and changes cursor symbol

checks if left mouse button is pressed and if CTRL is pressed and changes sliderbar in movedirection accordingly

Definition at line 260 of file QmitkSliderLevelWindowWidget.cpp.

References mitk::RenderingManager::GetInstance(), mitk::LevelWindow::GetLevel(), mitk::LevelWindow::GetRange(), mitk::LevelWindow::GetRangeMax(), mitk::LevelWindow::GetRangeMin(), mitk::LevelWindow::GetWindow(), mitk::LevelWindow::IsFixed(), m_Bottom, m_CtrlPressed, m_Leftbutton, m_LevelWindow, m_LowerBound, m_Manager, m_MouseDown, m_MoveHeight, m_Rect, m_Resize, m_StartPos, m_UpperBound, mitk::RenderingManager::RequestUpdateAll(), and mitk::LevelWindow::SetLevelWindow().

Referenced by enterEvent(), and mousePressEvent().

void QmitkSliderLevelWindowWidget::mousePressEvent ( QMouseEvent * mouseEvent )

overrideprotected

registers events when a mousebutton is pressed

if leftbutton is pressed m_Leftbutton is set to true

also checks if CTRL is pressed and sets the bool variable m_CtrlPressed

Definition at line 408 of file QmitkSliderLevelWindowWidget.cpp.

References mitk::LevelWindow::IsFixed(), m_CtrlPressed, m_Leftbutton, m_LevelWindow, m_MouseDown, m_StartPos, and mouseMoveEvent().

void QmitkSliderLevelWindowWidget::mouseReleaseEvent ( QMouseEvent * mouseEvent )

overrideprotected

sets the variable m_MouseDown to false

Definition at line 445 of file QmitkSliderLevelWindowWidget.cpp.

References mitk::LevelWindow::IsFixed(), m_LevelWindow, and m_MouseDown.

void QmitkSliderLevelWindowWidget::paintEvent ( QPaintEvent * e )

overrideprotected

repaint the slider and the scale

Definition at line 108 of file QmitkSliderLevelWindowWidget.cpp.

References mitk::LevelWindow::GetRange(), mitk::LevelWindow::GetRangeMax(), mitk::LevelWindow::GetRangeMin(), m_Font, m_LevelWindow, m_MoveHeight, m_Rect, and m_ScaleVisible.

void QmitkSliderLevelWindowWidget::resizeEvent ( QResizeEvent * event )

overrideprotectedvirtual

causes an update of the sliderbar when resizing the window

Definition at line 436 of file QmitkSliderLevelWindowWidget.cpp.

References m_MoveHeight, and update().

void QmitkSliderLevelWindowWidget::setDataStorage ( mitk::DataStorage * ds )

sets the DataStorage which holds all image-nodes

Definition at line 527 of file QmitkSliderLevelWindowWidget.cpp.

References m_Manager.

void QmitkSliderLevelWindowWidget::setLevelWindowManager ( mitk::LevelWindowManager * levelWindowManager )

sets the manager who is responsible to collect and deliver changes on Level/Window

Definition at line 70 of file QmitkSliderLevelWindowWidget.cpp.

References m_IsObserverTagSet, m_Manager, m_ObserverTag, and mitk::New().

void QmitkSliderLevelWindowWidget::showScale ( )

protectedslot

shows the scale if "Show Scale" is selected in contextmenu

Definition at line 521 of file QmitkSliderLevelWindowWidget.cpp.

References m_ScaleVisible, and update().

void QmitkSliderLevelWindowWidget::update ( )

protectedvirtual

recalculate the size and position of the slider bar

Definition at line 455 of file QmitkSliderLevelWindowWidget.cpp.

References mitk::LevelWindow::GetLowerWindowBound(), mitk::LevelWindow::GetRange(), mitk::LevelWindow::GetRangeMin(), mitk::LevelWindow::GetUpperWindowBound(), mitk::LevelWindow::GetWindow(), m_LevelWindow, m_MoveHeight, m_Rect, and m_ScaleVisible.

Referenced by hideScale(), QmitkSliderLevelWindowWidget(), resizeEvent(), and showScale().

Member Data Documentation

bool QmitkSliderLevelWindowWidget::m_Bottom

protected

Definition at line 132 of file QmitkSliderLevelWindowWidget.h.

Referenced by mouseMoveEvent(), and QmitkSliderLevelWindowWidget().

QmitkLevelWindowWidgetContextMenu* QmitkSliderLevelWindowWidget::m_Contextmenu

protected

data structure which creates the contextmenu for QmitkLineEditLevelWindowWidget

Definition at line 148 of file QmitkSliderLevelWindowWidget.h.

Referenced by QmitkSliderLevelWindowWidget().

bool QmitkSliderLevelWindowWidget::m_CtrlPressed

protected

Definition at line 135 of file QmitkSliderLevelWindowWidget.h.

Referenced by mouseMoveEvent(), mousePressEvent(), and QmitkSliderLevelWindowWidget().

QFont QmitkSliderLevelWindowWidget::m_Font

protected

Definition at line 143 of file QmitkSliderLevelWindowWidget.h.

Referenced by paintEvent(), and QmitkSliderLevelWindowWidget().

bool QmitkSliderLevelWindowWidget::m_IsObserverTagSet

protected

Definition at line 141 of file QmitkSliderLevelWindowWidget.h.

Referenced by QmitkSliderLevelWindowWidget(), setLevelWindowManager(), and ~QmitkSliderLevelWindowWidget().

bool QmitkSliderLevelWindowWidget::m_Leftbutton

protected

Definition at line 134 of file QmitkSliderLevelWindowWidget.h.

Referenced by mouseMoveEvent(), and mousePressEvent().

mitk::LevelWindow QmitkSliderLevelWindowWidget::m_LevelWindow

data structure which stores the values manipulated by a QmitkSliderLevelWindowWidget

Definition at line 96 of file QmitkSliderLevelWindowWidget.h.

Referenced by mouseMoveEvent(), mousePressEvent(), mouseReleaseEvent(), paintEvent(), and update().

QRect QmitkSliderLevelWindowWidget::m_LowerBound

protected

Definition at line 138 of file QmitkSliderLevelWindowWidget.h.

Referenced by mouseMoveEvent().

mitk::LevelWindowManager::Pointer QmitkSliderLevelWindowWidget::m_Manager

manager who is responsible to collect and deliver changes on Level/Window

Definition at line 99 of file QmitkSliderLevelWindowWidget.h.

Referenced by GetManager(), mouseMoveEvent(), QmitkSliderLevelWindowWidget(), setDataStorage(), setLevelWindowManager(), and ~QmitkSliderLevelWindowWidget().

bool QmitkSliderLevelWindowWidget::m_MouseDown

protected

Definition at line 133 of file QmitkSliderLevelWindowWidget.h.

Referenced by mouseMoveEvent(), mousePressEvent(), mouseReleaseEvent(), and QmitkSliderLevelWindowWidget().

int QmitkSliderLevelWindowWidget::m_MoveHeight

protected

Definition at line 136 of file QmitkSliderLevelWindowWidget.h.

Referenced by mouseMoveEvent(), paintEvent(), QmitkSliderLevelWindowWidget(), resizeEvent(), and update().

unsigned long QmitkSliderLevelWindowWidget::m_ObserverTag

protected

Definition at line 140 of file QmitkSliderLevelWindowWidget.h.

Referenced by QmitkSliderLevelWindowWidget(), setLevelWindowManager(), and ~QmitkSliderLevelWindowWidget().

QRect QmitkSliderLevelWindowWidget::m_Rect

protected

helper for drawing the component

Definition at line 124 of file QmitkSliderLevelWindowWidget.h.

Referenced by mouseMoveEvent(), paintEvent(), and update().

bool QmitkSliderLevelWindowWidget::m_Resize

protected

Definition at line 131 of file QmitkSliderLevelWindowWidget.h.

Referenced by mouseMoveEvent(), and QmitkSliderLevelWindowWidget().

bool QmitkSliderLevelWindowWidget::m_ScaleVisible

protected

Definition at line 137 of file QmitkSliderLevelWindowWidget.h.

Referenced by hideScale(), paintEvent(), QmitkSliderLevelWindowWidget(), showScale(), and update().

QPoint QmitkSliderLevelWindowWidget::m_StartPos

protected

helper for drawing the component

Definition at line 129 of file QmitkSliderLevelWindowWidget.h.

Referenced by mouseMoveEvent(), and mousePressEvent().

QRect QmitkSliderLevelWindowWidget::m_UpperBound

protected

Definition at line 139 of file QmitkSliderLevelWindowWidget.h.

Referenced by mouseMoveEvent().

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

Public Member Functions

Public Attributes

Protected Slots

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation