TransitionManager

class TransitionManager

Implements the core class of the program which handles chart and transition objects in a centralized way.

Summary

TransitionManager	Implements the core class of the program which handles chart and transition objects in a centralized way.
Functions
GetInstance	Static function to get the singleton instance.
Destroy	Destroys the singleton instance.
TransitionManager	Initializes the object.
~TransitionManager	Releases all allocated resources.
SetGLWidget	Sets the given MyGLWidget.
Update	Updates the active transition.
Draw	Draws the active transition (active chart with ongoing alterations) if present, else the active chart.
CreateChart	Creates and returns a chart of the given chart type for the active data set.
InitializeChart	Creates an initial chart on startup.
AddDataSet	Adds the data set to the list of data sets.
NextDataSet	Changes the active data set to the successor if present, else no change is applied.
PreviousDataSet	Changes the active data set to the predecessor if present, else no change is applied.
SetSortingOrder	Changes the sorting order in all data sets according to the given parameter.
SetChart	Changes the chart type according to the parameter.
SetFilter	Sets the filtering behavior for all data sets accoring to the parameter.

Functions

GetInstance

static TransitionManager* GetInstance()

Static function to get the singleton instance. If a instance is not yet created, it will be created.

Returns

The singleton instance.

Destroy

static void Destroy()

Destroys the singleton instance.

TransitionManager

TransitionManager()

Initializes the object.

~TransitionManager

~TransitionManager()

Releases all allocated resources.

SetGLWidget

void SetGLWidget( MyGLWidget * pGLWidget )

Sets the given MyGLWidget.

Parameters

pGLWidget

MyGLWidget instance to be set.

Update

void Update()

Updates the active transition.

Draw

void Draw( QPainter * pPainter )

Draws the active transition (active chart with ongoing alterations) if present, else the active chart.

Parameters

pPainter

The QPainter object to be used for drawing.

CreateChart

Chart* CreateChart( int iChartType )

Creates and returns a chart of the given chart type for the active data set.

Parameters

iChartType

BAR_CHART, GROUPED_BAR_CHART, STACKED_BAR_CHART or PIE_CHART.

Returns

The created chart of the desired chart type.

InitializeChart

void InitializeChart()

Creates an initial chart on startup.

AddDataSet

void AddDataSet( DataSet * pDataSet )

Adds the data set to the list of data sets.

Parameters

pDataSet

Pointer to the data set to be added.

NextDataSet

void NextDataSet()

Changes the active data set to the successor if present, else no change is applied.

PreviousDataSet

void PreviousDataSet()

Changes the active data set to the predecessor if present, else no change is applied.

SetSortingOrder

void SetSortingOrder( bool bDescending )

Changes the sorting order in all data sets according to the given parameter.

Parameters

bDescending

Indicates if the sorting order is changed to descending (true) or ascending (false).

SetChart

void SetChart( int iChartIndex )

Changes the chart type according to the parameter.

Parameters

iChartIndex

BAR_CHART, GROUPED_BAR_CHART, STACKED_BAR_CHART or PIE_CHART.

SetFilter

void SetFilter( bool bShowAll )

Sets the filtering behavior for all data sets accoring to the parameter.

Parameters

bShowAll

Indicates if all data entries are shown (true) or if the filtering is applied (false).