grndclik.h

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

// header file for GRenderClick and GRenderClickColour classes

#ifndef INC_GRNDCLIK
#define INC_GRNDCLIK

#include "grnddib.h"
#include "rendbits.h"

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

>   class GRenderClick : public GRenderDIB

    Author:     Andy_Pennell (Xara Group Ltd) <camelotdev@xara.com>
    Created:    15/11/94
    Purpose:    Special version of a GRenderRegion that renders into a mono bitmap. It
                is used for hit-detection only. It can also be asked if it is 'blank'.

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

class GRenderClick : public GRenderDIB
{
    friend class OSRenderBitmap;

    CC_DECLARE_DYNAMIC(GRenderClick)

public:
    GRenderClick(DocRect ClipRegion, Matrix ConvertMatrix, FIXED16 ViewScale, UINT32 Depth, double dpi);
    ~GRenderClick();

    virtual void DebugMe(INT32 Stretch);
    virtual BOOL ImmediateRender();

    // banding functions
    virtual BOOL SetFirstBand();
    virtual BOOL GetNextBand();

protected:
    LPBITMAPINFO GetLPBits( INT32 Width, INT32 Height, INT32 Depth, LPBYTE*);
    void FreeLPBits( LPBITMAPINFO, LPBYTE );

protected:      // private:
    virtual BitmapContents GetContents( BOOL );
    BOOL DisplayBits(LPBITMAPINFO lpDisplayBitmapInfo = NULL, LPBYTE lpDisplayBits = NULL);
    virtual void SetClean(BOOL bResetChangedBounds, BOOL FillWhite);
    BOOL AttachDevice(View*, wxDC*, Spread* SpreadToAttach = NULL, bool fOwned = false );
    BOOL StartRender();

    // member variables
    LPBYTE pMiddle;                         // pointer to byte of centre pixel
    BYTE MiddleMask;                        // mask of centre pixel

    // Var to ask the bitmap to be cleared the next time Start Render is called
    BOOL ClearOnStart;
};

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

>   class GRenderClickColour : public GRenderClick

    Author:     Chris_Snook (Xara Group Ltd) <camelotdev@xara.com>
    Created:    27/10/99
    Purpose:    Special version of a GRenderClick that renders into a colour bitmap. It
                is used for colour picker hit-detection/pixel colour detection only.

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

class GRenderClickColour : public GRenderClick
{
    friend class OSRenderBitmap;

    CC_DECLARE_DYNAMIC(GRenderClickColour)

public:
    GRenderClickColour(DocRect ClipRegion, Matrix ConvertMatrix, FIXED16 ViewScale, UINT32 Depth, double dpi);
    ~GRenderClickColour();

    virtual void DebugMe(INT32 Stretch);

    Pixel32bpp GetCentrePixel32BPP();
    Pixel32bpp GetAveragePixel32BPP();

private:
    BOOL AttachDevice(View*, wxDC*, Spread* SpreadToAttach = NULL, bool fOwned = false );
    BOOL StartRender();

protected:
    virtual BitmapContents GetContents(BOOL JustMiddle);

};

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

>   class GRenderClickColourNoPaper : public GRenderClickColour

    Author:     Phil_Martin (Xara Group Ltd) <camelotdev@xara.com>
    Created:    17/03/2004
    Purpose:    Special version of a GRenderClick that renders into a colour bitmap. It
                is used for hit-detection.
                The only difference between this and GRenderClickColour is that when
                it attaches to a CCDC that CCDC's NeedsPaper function will return FALSE

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

class GRenderClickColourNoPaper : public GRenderClickColour
{
    friend class OSRenderBitmap;

    CC_DECLARE_DYNAMIC(GRenderClickColourNoPaper)

public:
    GRenderClickColourNoPaper(DocRect ClipRegion, Matrix ConvertMatrix, FIXED16 ViewScale, UINT32 Depth, double dpi);
    ~GRenderClickColourNoPaper();

private:
    BOOL AttachDevice(View*, wxDC*, Spread* SpreadToAttach = NULL, bool fOwned = false );
};

#endif

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