oprotate.h

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// $Id: oprotate.h 751 2006-03-31 15:43:49Z alex $
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 */
// The transform operation that can be used to Rotate the selection

#ifndef INC_OPROTATE
#define INC_OPROTATE

#include "transop.h"

#define OPTOKEN_ROTATE _T("RotateTool")


/********************************************************************************************

>   class OpRotateSpin : public TransOperation

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    18/7/94
    Purpose:    The operation that performs the interactive EORed dragging during a rotation

********************************************************************************************/

class OpRotateTrans : public TransOperation
{

CC_DECLARE_DYNCREATE(OpRotateTrans);

public:
    // Construction/Destruction
    OpRotateTrans();

    // These functions required for the OpDescriptor class
    static BOOL Declare();

private:
    // Function to help at the start of an immediate transform
    virtual void InitTransformImmediate(OpParam*);

    // function to build the appropriate transform matrix
    virtual BOOL ShouldPointerBeOffset();
    virtual void InitTransformOnDrag(DocCoord, ClickModifiers);
    virtual void UpdateTransformOnDrag(DocCoord, Spread*, ClickModifiers&);
    virtual void BuildMatrix();
    virtual void ConstrainDrag(DocCoord*);
    virtual void UpdateTransformBoundingData();

    // a Helper function to work out the angle from the current mouse position
    ANGLE AngleFromCoord( DocCoord );

    // Member vars of the operation
    ANGLE   StartAngle;                 // The angle we start the drag at
    ANGLE   ConstrainedStartAngle;      // The constrined version of the start angle
    ANGLE   CurrentAngle;               // The Angle now

    // Flag to note if the constrain key is being used
    BOOL    IsConstrained;
};


#endif      // INC_OPROTATE

---