HOpMarkupRectangle
Functions
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Detailed Description
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class HOpMarkupRectangle : public HOpConstructRectangle
The HOpMarkupRectangle class inserts a 2D rectange into a markup layer. If a markup layer is already active then the operator will use that layer otherwise the operator will create a new, unamed layer.
HOpMarkupRectangle implements three mouse event methods defined on the base class and maps the event information to operator routines. This operation consists of the following steps:
Left Button Down: register corner of rectangle
Left Button Down and Drag: create an appropriately sized rectangle in the contruction layer
Left Button Up: depending on existence of an active markup layer it either opens the existing or creates a new markup layer and inserts appropraitely sized rectangle into it
Public Functions
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virtual ~HOpMarkupRectangle()
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virtual char const *GetName()
- Returns
A pointer to a character string denoting the name of the operator, which is ‘HOpMarkupRectangle’
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virtual int OnLButtonUp(HEventInfo &hevent)
OnLButtonUp maps rectangle information from HOpConstructRectangle into the HOOPS routine HC_Compute_Selection_By_Area. This function also deselects any selected items that are not present in the current selection list.
- Parameters
hevent – An HEventInfo object containing information about the current event.
- Returns
A value indicating the result of the event handling.
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virtual HBaseOperator *Clone()
Creates a new operator which is a copy of the current operator. The user is responsible for deleting the newly created operator.
- Returns
A pointer to the newly created HOpConstructRectangle object.
