aligndlg.h

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// $Id: aligndlg.h 751 2006-03-31 15:43:49Z alex $
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 */

#ifndef INC_ALIGNDLG
#define INC_ALIGNDLG

#include "rnddlgs.h" 
#include "transop.h" 

#define OPTOKEN_ALIGNDLG _T("ArrangeAlignment")    
#define OPTOKEN_OPALIGN  _T("OpAlign")    

// enumeration of all possible alignments on each axis
enum AlignType
{
    AlignNone       =0,
    AlignLow        =1,     // ie left or bottom
    AlignCentre     =2,
    AlignHigh       =3,     // ie right or top
    DistributeLow   =4,     // ie left or bottom
    DistributeCentre=5,
    DistributeHigh  =6,     // ie right or top
    DistributeEqui  =7
};  

// enumeration of possible target areas
enum TargetType
{
    ToSelection=0,
    ToPage     =1,
    ToSpread   =2
};  

// struct for passing params to OpAlign::DoWithParam()
struct AlignParam
{
    AlignType  h;
    AlignType  v;
    TargetType target;
};

// struct to cache x or y info about object to be affected 
struct ObjInfo
{
    INT32 i;        // cross-ref to pre-sorted state
    INT32 lo;   // left(bottom) coord of object
    INT32 hi;   // right(top)   coord of object
};

// struct to hold 1 dimensional data (1D equivelent of Rect!)
struct LineData
{
    INT32 lo;   // start position of line (x or y)
    INT32 hi;   // end   position of line (x or y)
};

// number of rects in diagram on dialog
const INT32 DiagRects=4;

/****************************************************************************
>   class ArrangeAlignment: public DialogOp

    Author:     Ed_Cornes (Xara Group Ltd) <camelotdev@xara.com>
    Created:    29/09/94
    Purpose:    Align object dialog
****************************************************************************/

class ArrangeAlignment: public DialogOp
{         
    CC_DECLARE_DYNCREATE( ArrangeAlignment )  
public:
    ArrangeAlignment(); 
    void                Do(OpDescriptor*);       
    static  BOOL        Init();                        
    static  OpState     GetState(String_256*, OpDescriptor*);   
    static  void        CalcDiagramRectsOneAxis(
                            LineData x[8][DiagRects],
                            const INT32 width[DiagRects],
                            const INT32 order[DiagRects],
                            const INT32 gap[DiagRects-1],
                            const INT32 DiagWidth
                        );
    virtual MsgResult   Message(Msg* Message);

    // positions of 4 diagram rectangles in all 8 alignments (x and y independent)
    static LineData DiagRectX[8][DiagRects];
    static LineData DiagRectY[8][DiagRects];

    static const    UINT32 IDD;     
    static const    CDlgMode Mode;

private:
    void      UpdateState();
    void      DialogOKed();
    void      RedrawDiagram(ReDrawInfoType* ExtraInfo);
    void      DiagramClicked(ReDrawInfoType* ExtraInfo);
    void      BuildIDSDropList(const CGadgetID DropListID, const INT32* IDSList, INT32 Default);
    void      SetRadioGroup( const CGadgetID* IDCList, const CGadgetID IDC);
    CGadgetID ReadRadioGroup(const CGadgetID* IDCList, const CGadgetID IDCDefault=NULL);

    static AlignParam Align;
}; 

/****************************************************************************
>   class OpAlign: public SelOperation

    Author:     Ed_Cornes (Xara Group Ltd) <camelotdev@xara.com>
    Created:    30/09/94
    Purpose:    Undo-able Op to Align objects
****************************************************************************/

class OpAlign: public TransOperation
{         
    CC_DECLARE_DYNCREATE(OpAlign)

public:
    OpAlign();  
    void    DoWithParam(OpDescriptor* pOp, OpParam* pAlignParam);        
    static  BOOL Init();                        
    static  OpState GetState(String_256*, OpDescriptor*);

private:
    void AlignOneAxis(AlignType Align, INT32 NumObjs, XLONG SumObjWidths,
                               INT32 SelRectLow, INT32 SelRectHigh, ObjInfo* x, INT32* dx);
}; 

#endif

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