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Reference documentation
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Reference documentation
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The Thistle::GraphView class provides an item view to display graphs. More...
Public Member Functions | |
| GraphView (QWidget *parent=0) | |
Constructs a graph view with the given parent. | |
| ~GraphView () | |
| Destructs the current view. | |
| AbstractGraphAlgorithm * | algorithm () const |
| Returns the current algorithm used to calculate the positions. | |
| virtual QPainterPath | itemPath (const QModelIndex &index) const |
Returns the QPainterPath defining the item's shape. More... | |
| void | paintEdges (QPainter &painter, const QPointF &offset=QPointF(0, 0)) const |
Paints the edges between the nodes on the painter device. More... | |
| void | paintItems (QPainter &painter, const QPointF &offset=QPointF(0, 0)) const |
Paints the nodes associated tothe items on the painter device. More... | |
| void | setAlgorithm (AbstractGraphAlgorithm *algorithm) |
Sets the algorithm system used to calculate the positions. More... | |
 Public Member Functions inherited from AbstractItemView | |
| AbstractItemView (QWidget *parent=0) | |
| Constructs an abstract item view with the given parent. | |
| virtual QRectF | itemRect (const QModelIndex &index) const |
| Defines the outer bounds of the item as a rectangle. More... | |
| virtual QRectF | itemRect (int row, int column, const QModelIndex &parent=QModelIndex()) const |
| This function overloads itemRect(). More... | |
Additional Inherited Members | |
| Public Slots inherited from AbstractItemView | |
| virtual void | updateValues ()=0 |
| Updates the items in the item view. More... | |
The Thistle::GraphView class provides an item view to display graphs.
The Thistle::GraphView class is based on the Thistle::AbstractItemView class. This class is used with Thistle::GraphModel and Thistle::AbstractGraphAlgorithm classes.
The Thistle::GraphModel classes is a simple implementation of a model which contains the nodes and the edges. The Thistle::AbstractGraphAlgorithm is used to calculate the position of each node relative to the edge. The Thistle::GraphAlgorithm class provides a default implementation with a basic algorithm.
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virtual |
Returns the QPainterPath defining the item's shape.
The path must be defined in the outer bounds returned by the itemRect() function.
Implements AbstractItemView.
| void paintEdges | ( | QPainter & | painter, |
| const QPointF & | offset = QPointF( 0, 0 ) |
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| ) | const |
Paints the edges between the nodes on the painter device.
The offset can be used if the view has to be centered (i.e. if some node has a negative position).
| void paintItems | ( | QPainter & | painter, |
| const QPointF & | offset = QPointF( 0, 0 ) |
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| ) | const |
Paints the nodes associated tothe items on the painter device.
The offset can be used if the view has to be centered (i.e. if some node has a negative position).
| void setAlgorithm | ( | AbstractGraphAlgorithm * | algorithm | ) |
Sets the algorithm system used to calculate the positions.
This function will not destroy the previous algorithm.
1.8.6