metaview.cpp

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// $Id: metaview.cpp 1282 2006-06-09 09:46:49Z alex $
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----------------------------------

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 */

// Simple view class for metafiles to use when rendering using RenderRegions.

/*
*/

#include "camtypes.h"
#include "metaview.h"
#include "vstate.h"
//#include "errors.h" - in camtypes.h [AUTOMATICALLY REMOVED]


CC_IMPLEMENT_DYNAMIC(MetafileView, View)

#define new CAM_DEBUG_NEW


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

>   BOOL MetafileView::Init()

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    22/9/95
    Returns:    TRUE if initialised ok;
                FALSE if not
    Purpose:    Initialise the MetafileView for rendering.
    SeeAlso:    MetafileView

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

BOOL MetafileView::Init()
{
    // Metafiles are always exported in the same format.
    // This is HIENGLISH which has 1000 pixels per inch.
    // As a result, we know that there are 72 millipoints per pixel.
    PixelWidth  = FIXED16(72);
    PixelHeight = FIXED16(72);
    
    // The scaled version are the same
    ScaledPixelWidth  = PixelWidth;
    ScaledPixelHeight = PixelHeight;

    // Get ourselves a ViewState object
    pVState = new ViewState;
    if (pVState == NULL) 
        return FALSE;

    // Connect this view state to this view
    pVState->pView = this;

    // No document for metafiles
    pDoc = NULL;

    // All ok
    return TRUE;
}

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

>   BOOL MetafileView::ViewStateChanged()

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    22/9/95
    Returns:    TRUE (always).
    Purpose:    None - MetafileView is a skeleton class that is only used to access screen
                characteristics.
    SeeAlso:    MetafileView

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

BOOL MetafileView::ViewStateChanged()
{
    return TRUE;
}

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

>   void MetafileView::SetViewPixelSize()

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    22/9/95
    Purpose:    Sets up the pixel size for this view object.
    SeeAlso:    MetafileView

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

void MetafileView::SetViewPixelSize()
{
    // Set the scaled pixel size
    ScaledPixelWidth = PixelWidth;
    ScaledPixelHeight = PixelHeight;
}

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

>   void MetafileView::ContinueRenderView(RenderRegion*, Spread*, BOOL = TRUE, BOOL = TRUE,
                                     BOOL bForceImmediate = FALSE)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    22/9/95
    Inputs:     N/A
    Purpose:    None - MetafileView is a skeleton class that is only used to access screen
                characteristics.
    SeeAlso:    MetafileView
    Errors:     Always => ERROR3

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

void MetafileView::ContinueRenderView(RenderRegion*, Spread*, BOOL, BOOL,
                                     BOOL bForceImmediate)
{
    ERROR3("MetafileView::ContinueRenderView() should not be called!");
}

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

>   CDC *MetafileView::GetRenderDC()

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    22/9/95
    Returns:    NULL (always)
    Purpose:    None - MetafileView is a skeleton class that is only used to access screen
                characteristics.
    SeeAlso:    MetafileView

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

CDC *MetafileView::GetRenderDC()
{
    return NULL;
}

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

>   BOOL MetafileView::GetForeBackMode()

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    22/9/95
    Returns:    FALSE - Metafiles don't do background rendering.
    Purpose:    None - MetafileView is a skeleton class that is only used to access screen
                characteristics.
    SeeAlso:    MetafileView

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

BOOL MetafileView::GetForeBackMode()
{
    // MetafileViews don't background render.
    return FALSE;
}

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

>   void MetafileView::SetForeBackMode(BOOL)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    22/9/95
    Inputs:     N/A
    Purpose:    None - MetafileView is a skeleton class that is only used to access screen
                characteristics.
    SeeAlso:    MetafileView
    Errors:     ERROR3 always - dialogs cannot background render!

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

void MetafileView::SetForeBackMode(BOOL)
{
    ERROR3("MetafileView::SetForeBackMode() should not be called!");
}

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

>   DocRect MetafileView::GetDocViewRect(Spread*)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    22/9/95
    Inputs:     N/A
    Returns:    An empty rectangle (always).
    Purpose:    None - MetafileView is a skeleton class that is only used to access screen
                characteristics.
    SeeAlso:    MetafileView

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

DocRect MetafileView::GetDocViewRect(Spread*)
{
    DocRect Empty;
    return Empty;
}

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

>   void MetafileView::SetExtent(DocCoord, DocCoord)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    22/9/95
    Inputs:     N/A
    Purpose:    None - MetafileView is a skeleton class that is only used to access screen
                characteristics.
    SeeAlso:    MetafileView

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

void MetafileView::SetExtent(DocCoord, DocCoord)
{
}

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

>   WorkRect MetafileView::GetViewRect()

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    22/9/95
    Returns:    An empty rectangle (always).
    Purpose:    None - MetafileView is a skeleton class that is only used to access screen
                characteristics.
    SeeAlso:    MetafileView

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

WorkRect MetafileView::GetViewRect()
{
    WorkRect Empty;
    return Empty;
}




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

>   INT32 MetafileView::GetMetafileFlatness()

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    22/9/95
    Returns:    The flatness to use for metafiles
    Purpose:    Allows the format that metafiles are saved in to change, without changing
                everything else in the world.

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

INT32 MetafileView::GetMetafileFlatness()
{
    // Say how much we are prepared to flatten paths
    return 1024;
}




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

>   INT32 MetafileView::GetMetafileDPI()

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    22/9/95
    Returns:    the number of pixels per inch for the metafile we are creating
    Purpose:    Allows the format that metafiles are saved in to change, without changing
                everything else in the world.

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

INT32 MetafileView::GetMetafileDPI()
{
    // We are currently using HIENGLISH mapping mode, which is at 1000 dpi
    return 1000;
}




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

>   INT32 MetafileView::GetMetafileMapMode()

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    22/9/95
    Returns:    The mapping mode to use for metafiles. This is currently MM_HIENGLISH
    Purpose:    Allows the format that metafiles are saved in to change, without changing
                everything else in the world.

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

INT32 MetafileView::GetMetafileMapMode()
{
    // return the mapping mode we want to use
    return MM_ANISOTROPIC;
}



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

>   void MetafileView::GetScaleFactor(FIXED16* pXScale, FIXED16* pYScale)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    22/9/95
    Outputs:    pXScale, pYScale - the x and y scale factor to render the drawing to,
                to get the best range of values from the coord system.
    Purpose:    Allows the format that metafiles are saved in to change, without changing
                everything else in the world.

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

void MetafileView::GetScaleFactor(FIXED16* pXScale, FIXED16* pYScale)
{
    // boost the scale to get the most out of the coord range.
    // We get this figure as we need to get 1000 dpi, but a scale of 1 will give 96 dpi
    // ie 1000/96 = 10.42
    *pXScale = FIXED16(1);
    *pYScale = FIXED16(1);
}

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