ShadowTl.cpp

Go to the documentation of this file.

// $Id: ShadowTl.cpp 1282 2006-06-09 09:46:49Z alex $
/* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE
================================XARAHEADERSTART===========================
 
               Xara LX, a vector drawing and manipulation program.
                    Copyright (C) 1993-2006 Xara Group Ltd.
       Copyright on certain contributions may be held in joint with their
              respective authors. See AUTHORS file for details.

LICENSE TO USE AND MODIFY SOFTWARE
----------------------------------

This file is part of Xara LX.

Xara LX is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License version 2 as published
by the Free Software Foundation.

Xara LX and its component source files are distributed in the hope
that it will be useful, but WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along
with Xara LX (see the file GPL in the root directory of the
distribution); if not, write to the Free Software Foundation, Inc., 51
Franklin St, Fifth Floor, Boston, MA  02110-1301 USA


ADDITIONAL RIGHTS
-----------------

Conditional upon your continuing compliance with the GNU General Public
License described above, Xara Group Ltd grants to you certain additional
rights. 

The additional rights are to use, modify, and distribute the software
together with the wxWidgets library, the wxXtra library, and the "CDraw"
library and any other such library that any version of Xara LX relased
by Xara Group Ltd requires in order to compile and execute, including
the static linking of that library to XaraLX. In the case of the
"CDraw" library, you may satisfy obligation under the GNU General Public
License to provide source code by providing a binary copy of the library
concerned and a copy of the license accompanying it.

Nothing in this section restricts any of the rights you have under
the GNU General Public License.


SCOPE OF LICENSE
----------------

This license applies to this program (XaraLX) and its constituent source
files only, and does not necessarily apply to other Xara products which may
in part share the same code base, and are subject to their own licensing
terms.

This license does not apply to files in the wxXtra directory, which
are built into a separate library, and are subject to the wxWindows
license contained within that directory in the file "WXXTRA-LICENSE".

This license does not apply to the binary libraries (if any) within
the "libs" directory, which are subject to a separate license contained
within that directory in the file "LIBS-LICENSE".


ARRANGEMENTS FOR CONTRIBUTION OF MODIFICATIONS
----------------------------------------------

Subject to the terms of the GNU Public License (see above), you are
free to do whatever you like with your modifications. However, you may
(at your option) wish contribute them to Xara's source tree. You can
find details of how to do this at:
  http://www.xaraxtreme.org/developers/

Prior to contributing your modifications, you will need to complete our
contributor agreement. This can be found at:
  http://www.xaraxtreme.org/developers/contribute/

Please note that Xara will not accept modifications which modify any of
the text between the start and end of this header (marked
XARAHEADERSTART and XARAHEADEREND).


MARKS
-----

Xara, Xara LX, Xara X, Xara X/Xtreme, Xara Xtreme, the Xtreme and Xara
designs are registered or unregistered trademarks, design-marks, and/or
service marks of Xara Group Ltd. All rights in these marks are reserved.


      Xara Group Ltd, Gaddesden Place, Hemel Hempstead, HP2 6EX, UK.
                        http://www.xara.com/

=================================XARAHEADEREND============================
 */
// 
#include "camtypes.h"
#include "shadowtl.h"
#include <objbase.h>
#include <initguid.h>

//#include "nodeattr.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "lineattr.h"
//#include "attrmgr.h" - in camtypes.h [AUTOMATICALLY REMOVED]

// Place any IMPLEMENT type statements here
CC_IMPLEMENT_MEMDUMP(CCWobJob, CC_CLASS_MEMDUMP)

// We want better memory tracking
#define new CAM_DEBUG_NEW

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

>   class CShadowerFlat

    Author:     Harrison_Ainsworth (Xara Group Ltd) <camelotdev@xara.com>
    Created:    21/12/97
    Purpose:    COM interface for the flat shadow generation system.
                ...
    See also:   ComShadowerFlat.cpp

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

interface IComShadowerFlat : public IUnknown
{
public:
    // set choices
    virtual void __stdcall SetChoicesToDefault() = 0;

    virtual void __stdcall SetChoices( const BOOL* MakeWallShadow, const AFloatPt01* Darkness01,
                                       const APixels* Blurriness, const ACoordPixels XYPosition,
                                       const ADegrees* Tilt, const AFloatPt01* YScale01 ) = 0;

    virtual void __stdcall SetBaseline( const AFloatPt01* Baseline ) = 0;

    // get choices
    virtual void __stdcall GetChoices( BOOL* MakeWallShadow, AFloatPt01* Darkness01, APixels* Blurriness,
                                       ACoordPixels XYPosition, ADegrees* Tilt, AFloatPt01* YScale01 ) const = 0;

    virtual void __stdcall GetBaseline( AFloatPt01* Baseline ) const = 0;

    // choices range queries
    virtual void __stdcall GetDarknessRange( AFloatPt01& Min, AFloatPt01& Max ) const = 0;
    virtual void __stdcall GetBlurrinessRange( APixels& Min, APixels& Max ) const = 0;
    virtual void __stdcall GetPositionRange( ACoordPixels Min, ACoordPixels Max ) const = 0;
    virtual void __stdcall GetProjectionRange( ADegrees& MinTilt, ADegrees& MaxTilt, AFloatPt01& MinYScale,
                                               AFloatPt01& MaxYScale ) const = 0;
    // alpha channel type switches
    virtual HRESULT __stdcall SwitchToTransparencyInsteadOfAlpha( BOOL YesOrNo ) = 0;
    virtual HRESULT __stdcall SwitchToUpsideDownPixelAddressing( BOOL YesOrNo ) = 0;

    // make shadow
    virtual HRESULT __stdcall InverseShadowBoundCalc( ACoordPixels UnshadowedWidHei, ACoordPixels UnshadowedPos,
                                                      const ACoordPixels& ShadowedWidHei,
                                                      const AFloatPt01* Baseline ) const = 0;

    virtual HRESULT __stdcall CalcShadowBound( ACoordPixels ShadowWidHei, ACoordPixels ShadowPos,
                                               const AAlphaChannel& TransparencyMap, const ACoordPixels& tWidHei,
                                               const ACoordPixels& tPos ) const = 0;

    virtual HRESULT __stdcall DrawShadow( const AAlphaChannel& ShadowMapOut, const ACoordPixels& sWidHei,
                                          const ACoordPixels& sPos, const AAlphaChannel& TransparencyMapIn,
                                          const ACoordPixels& tWidHei, const ACoordPixels& tPos ) const = 0;
};

// globally unique IDs ////////////////////////////////////////////////////////////////////////////
const GUID CShadowerFlat::IID_IComShadowerFlat = 
                    { 0x326f6db0, 0x7b82, 0x11d1, { 0xac, 0xbf, 0x0, 0x20, 0xaf, 0xe1, 0x4b, 0x7d } };
                    // {326F6DB0-7B82-11d1-ACBF-0020AFE14B7D}

const GUID CShadowerFlat::CLSID_CComShadowerFlat =
                    { 0x326f6db1, 0x7b82, 0x11d1, { 0xac, 0xbf, 0x0, 0x20, 0xaf, 0xe1, 0x4b, 0x7d } };
                    // {326F6DB1-7B82-11d1-ACBF-0020AFE14B7D}

// standard object management /////////////////////////////////////////////////////////////////////
CShadowerFlat::CShadowerFlat()
{
    pShadower_m = NULL;
}

CShadowerFlat::~CShadowerFlat()
{
    if( pShadower_m )
        pShadower_m->Release();
}

CShadowerFlat::CShadowerFlat( const CShadowerFlat& Other )
{
    pShadower_m = NULL;
}

CShadowerFlat& CShadowerFlat::operator= ( const CShadowerFlat& Other )
{
   return *this;
}

HRESULT CShadowerFlat::_Init_()
{
    
    // if( pShadower_m )
    {
        // already initialised so drop out
        return S_OK;
    }
    
    HRESULT hr = ::CoCreateInstance( CLSID_CComShadowerFlat, NULL, CLSCTX_INPROC_SERVER, IID_IComShadowerFlat,
                                     (void**)&pShadower_m );
    if( FAILED( hr ) )
        return hr;

    pShadower_m->SwitchToTransparencyInsteadOfAlpha( FALSE );
    pShadower_m->SwitchToUpsideDownPixelAddressing( TRUE );

    return S_OK;
}

// set choices ////////////////////////////////////////////////////////////////////////////////////
void CShadowerFlat::SetChoicesToDefault()
{
    /*
    if( pShadower_m )
        pShadower_m->SetChoicesToDefault();
        */
}

void CShadowerFlat::SetChoices( const BOOL* MakeWallShadow, const AFloatPt01* Darkness01, const APixels* Blurriness,
                           const ACoordPixels XYPosition, const ADegrees* Tilt, const AFloatPt01* YScale01 )
{
    /*
    if( pShadower_m )
        pShadower_m->SetChoices( MakeWallShadow, Darkness01, Blurriness, XYPosition, Tilt, YScale01 );
        */
}

void CShadowerFlat::SetBaseline( const AFloatPt01* Baseline )
{
    /*
    if( pShadower_m )
        pShadower_m->SetBaseline( Baseline );
        */
}

// get choices ////////////////////////////////////////////////////////////////////////////////////
void CShadowerFlat::GetChoices( BOOL* MakeWallShadow, AFloatPt01* Darkness01, APixels* Blurriness,
                           ACoordPixels XYPosition, ADegrees* Tilt, AFloatPt01* YScale01 ) const
{
    /*
    if( pShadower_m )
        pShadower_m->GetChoices( MakeWallShadow, Darkness01, Blurriness, XYPosition, Tilt, YScale01 );
        */
}

void CShadowerFlat::GetBaseline( AFloatPt01* Baseline ) const
{
    /*
    if( pShadower_m )
        pShadower_m->GetBaseline( Baseline );*/
}

// choices range queries //////////////////////////////////////////////////////////////////////////
void CShadowerFlat::GetDarknessRange( AFloatPt01& Min, AFloatPt01& Max ) const
{
    /*
    if( pShadower_m )
        pShadower_m->GetDarknessRange( Min, Max );
        */
}

void CShadowerFlat::GetBlurrinessRange( APixels& Min, APixels& Max ) const
{
    /*
    if( pShadower_m )
        pShadower_m->GetBlurrinessRange( Min,  Max );
        */
}

void CShadowerFlat::GetPositionRange( ACoordPixels Min, ACoordPixels Max) const
{
    /*
    if( pShadower_m )
        pShadower_m->GetPositionRange( Min, Max );
        */
}

void CShadowerFlat::GetProjectionRange( ADegrees& MinTilt, ADegrees& MaxTilt,
                                   AFloatPt01& MinYScale, AFloatPt01& MaxYScale ) const
{
    /*
    if( pShadower_m )
        pShadower_m->GetProjectionRange( MinTilt, MaxTilt, MinYScale, MaxYScale );
        */
}

// alpha channel type switches ////////////////////////////////////////////////////////////////////
HRESULT CShadowerFlat::SwitchToTransparencyInsteadOfAlpha( BOOL YesOrNo )
{
    /*
    if( pShadower_m )
        return pShadower_m->SwitchToTransparencyInsteadOfAlpha( YesOrNo );
    else
        return E_FAIL;
        */

    return S_OK;
}

HRESULT CShadowerFlat::SwitchToUpsideDownPixelAddressing( BOOL YesOrNo )
{
    /*
    if( pShadower_m )
        return pShadower_m->SwitchToUpsideDownPixelAddressing( YesOrNo );
    else
        return E_FAIL;
        */
    return S_OK;
}

// make shadow ////////////////////////////////////////////////////////////////////////////////////
HRESULT CShadowerFlat::InverseShadowBoundCalc( ACoordPixels UnshadowedWidHei, ACoordPixels UnshadowedPos,
                                          const ACoordPixels& ShadowedWidHei, const AFloatPt01* Baseline ) const
{
    /*
    if( pShadower_m )
        return pShadower_m->InverseShadowBoundCalc( UnshadowedWidHei, UnshadowedPos, ShadowedWidHei, Baseline );
    else
        return E_FAIL;
        */

    return S_OK;
}

HRESULT CShadowerFlat::CalcShadowBound( ACoordPixels ShadowWidHei, ACoordPixels ShadowPos, const AAlphaChannel& TransparencyIn,
                                   const ACoordPixels& tWidHei, const ACoordPixels& tPos ) const
{
    /*
    if( pShadower_m )
        return pShadower_m->CalcShadowBound( ShadowWidHei, ShadowPos, TransparencyIn, tWidHei, tPos );
    else
        return E_FAIL;
        */

    return S_OK;
}

HRESULT CShadowerFlat::DrawShadow( const AAlphaChannel& ShadowOut, const ACoordPixels& sWidHei, const ACoordPixels& sPos,
                              const AAlphaChannel& TransparencyIn, const ACoordPixels& tWidHei, const ACoordPixels& tPos ) const
{
    /*
    if( pShadower_m )
        return  pShadower_m->DrawShadow( ShadowOut, sWidHei, sPos, TransparencyIn, tWidHei, tPos );
    else
        return  E_FAIL;
        */

    return S_OK;
}

---