DdtPanningWidget Class Reference

#include <ddtPanningWidget.hpp>

Inheritance diagram for DdtPanningWidget:

Public Slots
void	SetImage (const QImage *const image, const QTransform &transform, const bool show, const double rotation)
void	ImageWidgetViewChanged (const QRectF &visible_image_rect, const int current_image_width, const int current_image_height)

Signals
void	UpdatePosition (double scroll_fraction_x, double scroll_fraction_y)

Public Member Functions
	DdtPanningWidget (QWidget *parent=nullptr)
	~DdtPanningWidget ()
void	set_show_axes (const bool show)
bool	get_show_axes () const
void	set_rotation_deg (const float rotation)
float	get_rotation_deg () const
Public Member Functions inherited from DdtWidget
	DdtWidget (QWidget *parent=nullptr)
	DdtWidget. More...
virtual	~DdtWidget ()=default
QLayout *	addParentLayout (QLayout *childLayout)
	addParentLayout This will add the given layout to the layout of the parent inside the group box. More...

Protected Member Functions
bool	eventFilter (QObject *obj, QEvent *event)

Protected Attributes
bool	show_axes
int	show_status = 1
float	rotation_deg
float	zoom_factor
bool	mouse_drag_active
QLabel *	preview_image_label
QImage	preview_image
QRect	selection_rectangle
QRect	max_selection_rectangle
int	origin_x
int	origin_y
QRubberBand *	rubberband

Properties
bool	ShowAxes

Detailed Description

Class for the Panning Widget that can be used to pan the image currently displayed in an Image Widget

Constructor & Destructor Documentation

DdtPanningWidget()

DdtPanningWidget::DdtPanningWidget ( QWidget *  parent = nullptr )

explicit

Constructor

Parameters

parent

Pointer to the parent widget

~DdtPanningWidget()

DdtPanningWidget::~DdtPanningWidget ( )

default

Destructor

Member Function Documentation

eventFilter()

bool DdtPanningWidget::eventFilter ( QObject *  obj, QEvent *  event  )

protected

Event filter that will be called especially when mouse events reach the widget

Parameters

obj	Pointer to the object
event	Pointer to the event that occurred

get_rotation_deg()

float DdtPanningWidget::get_rotation_deg

(

)

const

Rerieve the rotation angle (in degrees) that is used for the compass display

Returns

the rotation angle (in degrees)

get_show_axes()

bool DdtPanningWidget::get_show_axes

(

)

const

Retrieve the state of the show_axes flag

Returns

true if the compass axes should be plotted in the pan preview

ImageWidgetViewChanged

void DdtPanningWidget::ImageWidgetViewChanged ( const QRectF &  visible_image_rect, const int  current_image_width, const int  current_image_height  )

slot

Slot which is called when the position in the image widget was changed (e.g. by scrolling, resizing, zoom)

Parameters

visible_image_rect	Rectangle of the currently visible part of the image
current_image_width	Total width of the image currently displayed
current_image_height	Total height of the image currently displayed

set_rotation_deg()

void DdtPanningWidget::set_rotation_deg

(

const float

rotation

)

Sets the rotation angle (in degrees) to be used for the compass display

Parameters

rotation_deg

the rotation angle to be set (in degrees)

set_show_axes()

void DdtPanningWidget::set_show_axes

(

const bool

show

)

Sets status of the flag that decides if compass axis should be shown at all

Parameters

show_axes

if true the axes of the compass will be displayed in the preview image

SetImage

void DdtPanningWidget::SetImage ( const QImage *const  image, const QTransform &  transform, const bool  show, const double  rotation  )

slot

Slot which is called when a new image was loaded in the image widget to the new preview image @transform Transformation to be used for drawing the compass @show_axes Flag indicating if the compass lines shall be shown @rotation The rotation angle for the compass display

UpdatePosition

void DdtPanningWidget::UpdatePosition ( double  scroll_fraction_x, double  scroll_fraction_y  )

signal

Signal which is sent when the selection rectangle is moved

Parameters

scroll_fraction_x	Fraction of the width to which the selection rectangle was moved
scroll_fraction_y	Fraction of the height to which the selection rectangle was moved

Member Data Documentation

max_selection_rectangle

QRect DdtPanningWidget::max_selection_rectangle

protected

Maximum rectangle that is available for the preview window

mouse_drag_active

bool DdtPanningWidget::mouse_drag_active

protected

Flag which indicates that a mouse drag operation is in progress

origin_x

int DdtPanningWidget::origin_x

protected

Origin of the x coordinate since the preview image might be smaller then the widget

origin_y

int DdtPanningWidget::origin_y

protected

Origin of the y coordinate since the preview image might be smaller then the widget

preview_image

QImage DdtPanningWidget::preview_image

protected

QImage that holds the preview image shown in the widget

preview_image_label

QLabel* DdtPanningWidget::preview_image_label

protected

QLabel which is used to display the preview image that can be used to navigate the current view

rotation_deg

float DdtPanningWidget::rotation_deg

protected

Rotation angle (in degrees) to be used for the compass display

rubberband

QRubberBand* DdtPanningWidget::rubberband

protected

Rubberband object to display the selection rectangle in the widget

selection_rectangle

QRect DdtPanningWidget::selection_rectangle

protected

Rectangle holding the current pan rectangle

show_axes

bool DdtPanningWidget::show_axes

protected

Flag to decide if compass axes should be displayed in the widget

show_status

int DdtPanningWidget::show_status = 1

protected

Status indicating which axes are to be shown 0 - show none 1 - show compass and x/y axes 2 - only show compass 3 - only show x/y axes

zoom_factor

float DdtPanningWidget::zoom_factor

protected

Current zoom factor

Property Documentation

ShowAxes

bool DdtPanningWidget::ShowAxes

readwrite

---

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

• datavisualisation/widgetsdialogs/src/include/ddt/widgets/ddtPanningWidget.hpp
• datavisualisation/widgetsdialogs/src/widgets/ddtPanningWidget.cpp