DdtPanningWidget Class Reference

#include <ddtPanningWidget.hpp>

Inheritance diagram for DdtPanningWidget:

Public Slots
void	SetImage (QImage *image)
void	ImageWidgetViewChanged (QRectF visible_image_rect, int current_image_width, 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 (bool show_axes)
bool	get_show_axes ()
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
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_show_axes()

bool DdtPanningWidget::get_show_axes

(

)

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 ( QRectF  visible_image_rect, int  current_image_width, 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_show_axes()

void DdtPanningWidget::set_show_axes

(

bool

show_axes

)

Sets status of the flag that decides if compass axis should be shown (Qt Designer property)

Parameters

show_axes

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

SetImage

void DdtPanningWidget::SetImage ( QImage *  image )

slot

Slot which is called when a new image was loaded in the image widget to the new preview image

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

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

zoom_factor

float DdtPanningWidget::zoom_factor

protected

Current zoom factor

Property Documentation

ShowAxes

bool DdtPanningWidget::ShowAxes

readwrite

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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