A QGraphicsScene subclass which is responsible for the creation, drawing and rendering of a stacked graph. More...

#include <graphscene.h>

Signals
void	redrawRequired ()

Public Member Functions
	GraphScene (QWidget *parent)

void	CreateStackedGraph (DataSet &data)
	Creates a stacked graph out of the given dataset. More...

QVector< GraphLayouter * >	GetLayouts () const
	Returns the available layouts.

QVector< GraphSorter * >	GetSorters () const
	Returns the available sorters.

void	SetLayout (GraphLayouter *const layouter)
	Sets the layouter to use in the CreateStackedGraph method. More...

void	SetSorter (GraphSorter *const sorter)
	Sets the sorter to use in the CreateStackedGraph method. More...

void	SetInterpolationMode (GraphLayouter::InterpolationMode const interpMode)
	Sets the interpolation method to be used by the GraphLayouter when layouting the graph. More...

void	SetSortingAttribute (GraphSorter::SortingAttribute const sortAttribute)
	Sets the sorting attribute to be used by the GraphSorter when sorting the dataset. More...

void	SetColoringAttribute (GraphColorizer::ColoringAttribute const colorAttribute)
	Sets the coloring attribute to be used by the GraphColorizer when assigning colors to the graph layers. More...

void	SetLabeling (bool enabled)
	Determines if the layers should show their labels. More...

void	SetColors (QColor const beginColor, QColor const endColor)
	Sets the colors which define the start and end color of the linearly interpolated color gradient used to define the stacked graphs layer colors. More...

void	Set2DColoring (bool enable)
	Sets a flag which enables 2D coloring: alpha value of color changes according to the layours sum value.

QImage	GetBitmap (int width, int height, bool keepAspect)
	Renders the current graph into a `QImage`. More...

Protected Member Functions
void	mousePressEvent (QGraphicsSceneMouseEvent *ev) override

Detailed Description

A QGraphicsScene subclass which is responsible for the creation, drawing and rendering of a stacked graph.

Call CreateStackedGraph to create the graph with the currently set attributes. GetBitmap can be used for exporting.

Member Function Documentation

void GraphScene::CreateStackedGraph ( DataSet & data )

Creates a stacked graph out of the given dataset.

This function puts together the results of the current GraphSorter, GraphLabeler and GraphColorizer to create a visual representation of the data set. Labelling is also optionally performed using a brute-force algorithm.

Parameters

data	the DataSet to use.

QImage GraphScene::GetBitmap	(	int	width,
		int	height,
		bool	keepAspect
	)

Renders the current graph into a QImage.

Parameters

width	The pixel-width of the image
heigth	The pixel-height of the image
keepAspect	If true, the aspect ratio of the graph is kept as it is in the application. If false, it uses the ratio of the image.

Returns: a QImage of the graph

void GraphScene::SetColoringAttribute ( GraphColorizer::ColoringAttribute const colorAttribute )

Sets the coloring attribute to be used by the GraphColorizer when assigning colors to the graph layers.

Parameters

colorAttribute the attribute used to calculate appropriate colors

void GraphScene::SetColors	(	QColor const	beginColor,
		QColor const	endColor
	)

Sets the colors which define the start and end color of the linearly interpolated color gradient used to define the stacked graphs layer colors.

Parameters

color the color to set

void GraphScene::SetInterpolationMode ( GraphLayouter::InterpolationMode const interpMode )

Sets the interpolation method to be used by the GraphLayouter when layouting the graph.

Parameters

interpMode the interpolation mode

void GraphScene::SetLabeling ( bool enabled )

Determines if the layers should show their labels.

The algorithm used for sizing and positioning the labels is based on a simple brute-force method, and may not give the best results in most cases. If no label can fit in a given layer, it gets no label at all.

Parameters

enabled if true, draw labels

void GraphScene::SetLayout ( GraphLayouter *const layouter )

Sets the layouter to use in the CreateStackedGraph method.

Parameters

layout the layouter

void GraphScene::SetSorter ( GraphSorter *const sorter )

Sets the sorter to use in the CreateStackedGraph method.

Parameters

sorter the sorter

void GraphScene::SetSortingAttribute ( GraphSorter::SortingAttribute const sortAttribute )

Sets the sorting attribute to be used by the GraphSorter when sorting the dataset.

Parameters

sortAttribute the attribute used to sort the dataset

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

StackedGraphs/graphscene.h
StackedGraphs/graphscene.cpp

Signals

Public Member Functions

Protected Member Functions

Detailed Description

Member Function Documentation