colplate.cpp

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// $Id: colplate.cpp 1282 2006-06-09 09:46:49Z alex $
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 */
// colplate.cpp - Describe colour separation plates for ColourContexts


#include "camtypes.h"

//#include "app.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "colcontx.h"
#include "colourix.h"
#include "colplate.h"
//#include "isetres.h"
#include "printctl.h"


CC_IMPLEMENT_DYNCREATE(ColourPlate, ListItem);

// Declare smart memory handling in Debug builds
#define new CAM_DEBUG_NEW




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

>   void ColourPlate::InitObject(ColourPlateType NewType)

    Author:     Jason_Williams (Xara Group Ltd) <camelotdev@xara.com>
    Date:       25/6/96

    Inputs:     TheType - Describes what kind of colour plate you want

    Purpose:    Sets this colour plate to the given type, and then initialises ALL
                member variables to suitable defautls for that type.

                Used by all the constructors to share code for initialisation.

    Notes:      Does not check the validity of the arguments (i.e. if you ask for
                COLOURPLATE_SPOT, does not check that the SpotColour is set up)

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

void ColourPlate::InitObject(ColourPlateType NewType)
{
    Disabled        = FALSE;

    Type            = NewType;

    Overprint       = FALSE;
    Monochrome      = TRUE;
    Negate          = FALSE;
    ActiveScreens   = FALSE;

    ScreenFunction  = SCRTYPE_NONE;     // represents no setscreen command output

    // And set up a suitable default for screen angle/frequency
    // Use the selected document's printer resolution and LPI defaults
    INT32 DPI   = 1200;     // Defaults in case of catastrophy
    INT32 LPI   = 60;
    
#if !defined(EXCLUDE_FROM_RALPH) && !defined(EXCLUDE_FROM_XARALX)
    TypesetInfo *TPInfo = TypesetInfo::FindTypesetInfoForDoc();
    if (TPInfo != NULL)
    {
        DPI = TPInfo->GetPrintResolution();
        LPI = (INT32) floor(TPInfo->GetDefaultScreenFrequency());
    }
#endif

    ResetScreenToDefaults(DPI, LPI);
}



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

>   ColourPlate::ColourPlate()
>   ColourPlate::ColourPlate(ColourPlateType TheType,
                                BOOL MonochromePlate = FALSE, BOOL NegatePlate = FALSE)
>   ColourPlate::ColourPlate(IndexedColour *SpotColour,
                                BOOL MonochromePlate = FALSE, BOOL NegatePlate = FALSE)
>   ColourPlate::ColourPlate(const ColourPlate &Other);

    Author:     Jason_Williams (Xara Group Ltd) <camelotdev@xara.com>
    Date:       20/12/95

    Inputs:     TheType - Describes what kind of colour plate you want

                SpotColour - Indicates that this is a spot plate, and which colour is to be
                treated as the spot colour for output. Only this colour and its descendants
                will be output on the plate.

                Monochrome - if TRUE, all output on the plate will be monochromatic (greyscale).
                If FALSE then the plate may contain colour (i.e. a Cyan plate can be output in
                greyscales (e.g. for printer output) or in shades of cyan (e.g. for screen))

                Negate - if TRUE, all output will be negated to give a photographic negative
                of the plate. if FALSE, the output will be left alone.

                Other - Another ColourPlate you want to copy

    Purpose:    Construct ColourPlate descriptions

    Notes:      The default constructor makes a simple COLOURPLATE_NONE plate

    Errors:     ERROR3 reports will occur if you do something stupid

    SeeAlso:    ColourContext

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

ColourPlate::ColourPlate()
{
    InitObject(COLOURPLATE_NONE);
}



ColourPlate::ColourPlate(ColourPlateType TheType, BOOL MonochromePlate, BOOL NegatePlate)
{
    ERROR3IF(TheType == COLOURPLATE_SPOT, "Spot plates must be constructed with the Spot Colour constructor");

    InitObject(TheType);

    // And override the defaults with the supplied settings
    Monochrome      = MonochromePlate;
    Negate          = NegatePlate;
}



ColourPlate::ColourPlate(IndexedColour *SpotColour, BOOL MonochromePlate, BOOL NegatePlate)
{
    ERROR3IF(SpotColour == NULL, "Spot plates must include a valid Spot Colour!");

    InitObject(COLOURPLATE_SPOT);

    // And override the defaults with the supplied settings
    Monochrome      = MonochromePlate;
    Negate          = NegatePlate;

    Spot.MakeRefToIndexedColour(SpotColour);
}



ColourPlate::ColourPlate(const ColourPlate &Other)
{
    Disabled        = Other.Disabled;
    Type            = Other.Type;
    Overprint       = Other.Overprint;
    Monochrome      = Other.Monochrome;
    Negate          = Other.Negate;
    ActiveScreens   = Other.ActiveScreens;
    Spot            = Other.Spot;

    ScreenAngle     = Other.ScreenAngle;
    ScreenFrequency = Other.ScreenFrequency;
    ScreenFunction  = Other.ScreenFunction;
}



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

>   ColourPlate &operator=(const ColourPlate &Other)

    Author:     Jason_Williams (Xara Group Ltd) <camelotdev@xara.com>
    Date:       13/6//96

    Purpose:    ColourPlate assignment operator

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

ColourPlate &ColourPlate::operator=(const ColourPlate &Other)
{
    Disabled        = Other.Disabled;
    Type            = Other.Type;
    Overprint       = Other.Overprint;
    Monochrome      = Other.Monochrome;
    Negate          = Other.Negate;
    ActiveScreens   = Other.ActiveScreens;
    Spot            = Other.Spot;

    ScreenAngle     = Other.ScreenAngle;
    ScreenFrequency = Other.ScreenFrequency;
    ScreenFunction  = Other.ScreenFunction;

    return(*this);
}



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

>   ColourPlate::~ColourPlate()

    Author:     Jason_Williams (Xara Group Ltd) <camelotdev@xara.com>
    Date:       20/12/95

    Purpose:    Er... damn. It was on the tip of my tongue...

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

ColourPlate::~ColourPlate()
{
}



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

>   void ColourPlate::GetDescription(StringBase *Description)

    Author:     Jason_Williams (Xara Group Ltd) <camelotdev@xara.com>
    Date:       13/6/96

    Outputs:    On return, the Description string will contain a description of this
                colour plate. The string should be more than 64 characters in length,
                or the result could be truncated.

    Purpose:    To retrieve a textual description of this colour plate
                (e.g. "Cyan" "Gold (Spot)")

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

void ColourPlate::GetDescription(StringBase *Description)
{
    ERROR3IF(Description == NULL, "Illegal NULL param");
    *Description = TEXT("");

    switch(GetType())
    {
        case COLOURPLATE_CYAN:
            Description->MakeMsg(_R(IDS_COLOURPLATE_CYAN));
            break;

        case COLOURPLATE_MAGENTA:
            Description->MakeMsg(_R(IDS_COLOURPLATE_MAGENTA));
            break;

        case COLOURPLATE_YELLOW:
            Description->MakeMsg(_R(IDS_COLOURPLATE_YELLOW));
            break;

        case COLOURPLATE_KEY:
            Description->MakeMsg(_R(IDS_COLOURPLATE_BLACK));
            break;

        case COLOURPLATE_SPOT:
            {
                IndexedColour *Col = GetSpotColour();
                ERROR3IF(Col == NULL, "NULL Spot colour in spot plate");

                Description->MakeMsg(_R(IDS_COLOURPLATE_SPOT), (TCHAR *) *(Col->GetName()) );
            }
            break;
        default:
            break;
    }
}



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

>   void ColourPlate::GetDisplayColour(DocColour *Colour)

    Author:     Jason_Williams (Xara Group Ltd) <camelotdev@xara.com>
    Date:       24/6/96

    Outputs:    On return, the Colour parameter will be filled in with an appropriate colour

    Purpose:    To retrieve a suitable user-interface display colour for this plate.
                For a spot plate, this is simply the spot colour itself.
                For the process plates, a suitable colour will be returned.

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

void ColourPlate::GetDisplayColour(DocColour *Colour)
{
    ERROR3IF(Colour == NULL, "Illegal NULL param");

    PColourCMYK CMYKDef;
    CMYKDef.Cyan = CMYKDef.Magenta = CMYKDef.Yellow = CMYKDef.Key = 0;

    switch(GetType())
    {
        case COLOURPLATE_CYAN:      CMYKDef.Cyan = 255;     break;
        case COLOURPLATE_MAGENTA:   CMYKDef.Magenta = 255;  break;
        case COLOURPLATE_YELLOW:    CMYKDef.Yellow = 255;   break;
        case COLOURPLATE_KEY:       CMYKDef.Key = 255;      break;

        case COLOURPLATE_SPOT:
            {
                IndexedColour *Col = GetSpotColour();
                ERROR3IF(Col == NULL, "NULL Spot colour in spot plate");

                Colour->MakeRefToIndexedColour(Col);
                return;     // Return immediately
            }
            break;

        default:
            // Just leave it alone, which will return the default value - white
            break;
    }

    // If we've dropped through this far, then set the CMYK value we've
    // filled in, and return
    Colour->SetCMYKValue(&CMYKDef);
}



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

>   void ColourPlate::SetDisabled(BOOL IsDisabled = TRUE)

    Author:     Jason_Williams (Xara Group Ltd) <camelotdev@xara.com>
    Date:       20/5/96

    Inputs:     IsDisabled - TRUE to disable this ColourPlate, FALSE to enable it

    Purpose:    Internally, some colour conversions need to turn of colour separations.
                (e.g. user-interface colours such as dialogue greys and EOR colours).

                These disable separation by setting this disabling flag - this should
                only be used in a VERY temporary sense (i.e. around individual calls
                to ConvertColour).

    Notes:      ColourPlates always default to being Enabled.

    SeeAlso:    ColourContext::ConvertColour; ColourContext::ConvertColourBase

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

void ColourPlate::SetDisabled(BOOL IsDisabled)
{
    Disabled = IsDisabled;
}



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

>   void ColourPlate::SetPlateInfo(ColourContext *Parent, ColourPlateType TheType,
                                    BOOL MonochromePlate = FALSE, BOOL NegatePlate = FALSE)
>   void ColourPlate::SetPlateInfo(ColourContext *Parent, IndexedColour *SpotColour,
                                    BOOL MonochromePlate = FALSE, BOOL NegatePlate = FALSE)

    Author:     Jason_Williams (Xara Group Ltd) <camelotdev@xara.com>
    Date:       20/12/95

    Inputs:     Parent - the ColourContext this plate is attached to, or NULL if it is currently
                unattached. NOTE that it is vital that you pass the parent context in if it is
                attached, or colours in that context will remain incorrectly cached indefinitely!

                TheType - Describes what kind of colour plate you want

                SpotColour - Indicates that this is a spot plate, and which colour is to be
                treated as the spot colour for output. Only this colour and its descendants
                will be output on the plate.

                Monochrome - if TRUE, all output on the plate will be monochromatic (greyscale).
                If FALSE then the plate may contain colour (i.e. a Cyan plate can be output in
                greyscales (e.g. for printer output) or in shades of cyan (e.g. for screen))

                Negate - if TRUE, all output will be negated to give a photographic negative
                of the plate. if FALSE, the output will be left alone.

    Purpose:    Change this ColourPlate description

    Notes:      Every time the plate changes, the attached ColourContext must chnage its handle
                in order to "flush" all cached colours. After 65536 such flushes, it is possible
                for contexts to start using duplicate handles, so it is preferable that changes
                are made to plates as infrequently as possible.

                ** ALL ColourPlate settings will be reset when you call this function, i.e.
                disabled plates will be re-enabled, new default screen angle/frequency values
                filled in, overprint disabled, etc.

    Errors:     ERROR3 reports will occur if you do something stupid

    SeeAlso:    ColourContext

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

void ColourPlate::SetPlateInfo(ColourContext *Parent, ColourPlateType TheType,
                                BOOL MonochromePlate, BOOL NegatePlate)
{
    ERROR3IF(TheType == COLOURPLATE_SPOT, "Spot plates must be constructed with the Spot Colour constructor");

    InitObject(TheType);

    Monochrome  = MonochromePlate;
    Negate      = NegatePlate;

    Spot        = DocColour(COLOUR_BLACK);

    if (Parent != NULL)
        Parent->ColourPlateHasChanged();
}


void ColourPlate::SetPlateInfo(ColourContext *Parent, IndexedColour *SpotColour,
                                BOOL MonochromePlate, BOOL NegatePlate)
{
    ERROR3IF(SpotColour == NULL, "Spot plates must include a valid Spot Colour!");

    InitObject(COLOURPLATE_SPOT);

    Monochrome  = MonochromePlate;
    Negate      = NegatePlate;

    Spot.MakeRefToIndexedColour(SpotColour);

    if (Parent != NULL)
        Parent->ColourPlateHasChanged();
}



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

>   void ColourPlate::SetType(ColourContext *Parent, ColourPlateType TheType,
                                IndexedColour *SpotColour = NULL)

    Author:     Jason_Williams (Xara Group Ltd) <camelotdev@xara.com>
    Date:       20/12/95

    Inputs:     Parent - the ColourContext this plate is attached to, or NULL if it is currently
                unattached. NOTE that it is vital that you pass the parent context in if it is
                attached, or colours in that context will remain incorrectly cached indefinitely!

                TheType - Describes what kind of colour plate you want

                SpotColour - NULL, or points to the colour which is to be treated as the spot
                colour for output. Only this colour and its descendants will be output on the
                plate. TheType must be COLOURPLATE_SPOT if this is non-NULL.

    Purpose:    Change this ColourPlate description

    Notes:      Every time the plate changes, the attached ColourContext must chnage its handle
                in order to "flush" all cached colours. After 65536 such flushes, it is possible
                for contexts to start using duplicate handles, so it is preferable that changes
                are made to plates as infrequently as possible.

    Errors:     ERROR3 reports will occur if you do something stupid

    SeeAlso:    ColourContext

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

void ColourPlate::SetType(ColourContext *Parent, ColourPlateType TheType, IndexedColour *SpotColour)
{
    ERROR3IF(TheType == COLOURPLATE_SPOT && SpotColour == NULL,
                "Spot plates must include a valid Spot Colour!");

    if (Type != COLOURPLATE_SPOT || Spot.FindParentIndexedColour() != SpotColour)
    {
        InitObject(TheType);

        if (SpotColour != NULL)
            Spot.MakeRefToIndexedColour(SpotColour);

        if (Parent != NULL)
            Parent->ColourPlateHasChanged();
    }
}



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

>   void ColourPlate::SetScreenInfo(double Angle, double Frequency)

    Author:     Jason_Williams (Xara Group Ltd) <camelotdev@xara.com>
    Date:       24/6/96

    Inputs:     Angle       - The screen angle to use for screening of this plate
                                in the range 0..360 degrees
                Frequency   - The screen frequency (lpi) to use for screening of this plate

    Purpose:    Set new screen angle/frequency settings

    SeeAlso:    ColourPlate::ResetScreenToDefaults

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

void ColourPlate::SetScreenInfo(double Angle, double Frequency)
{
    ERROR3IF(Angle < 0.0 || Angle >= 360.0, "Illegal screen angle");
    ScreenAngle = Angle;

    ERROR3IF(Frequency < 1.0 || Frequency > 1000.0, "Silly screen frequency");
    ScreenFrequency = Frequency;
}



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

>   void ColourPlate::SetOverprint(BOOL On)

    Author:     Jason_Williams (Xara Group Ltd) <camelotdev@xara.com>
    Date:       24/6/96

    Inputs:     On - TRUE to enable or FALSE to disable overprinting of this plate

    Purpose:    Sets this plate to overprint or knock-out

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

void ColourPlate::SetOverprint(BOOL On)
{
    Overprint = On;
}



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

>   void ColourPlate::SetMonochrome(ColourContext *Parent, BOOL On = TRUE)

    Author:     Jason_Williams (Xara Group Ltd) <camelotdev@xara.com>
    Date:       20/12/95

    Inputs:     Parent - the ColourContext this plate is attached to, or NULL if it is currently
                unattached. NOTE that it is vital that you pass the parent context in if it is
                attached, or colours in that context will remain incorrectly cached indefinitely!

                On - if TRUE, all output on the plate will be monochromatic (greyscale).
                If FALSE then the plate may contain colour (i.e. a Cyan plate can be output in
                greyscales (e.g. for printer output) or in shades of cyan (e.g. for screen))

    Purpose:    Change this ColourPlate description

    Notes:      Every time the plate changes, the attached ColourContext must chnage its handle
                in order to "flush" all cached colours. After 65536 such flushes, it is possible
                for contexts to start using duplicate handles, so it is preferable that changes
                are made to plates as infrequently as possible.

    SeeAlso:    ColourContext

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

void ColourPlate::SetMonochrome(ColourContext *Parent, BOOL On)
{
    if (Monochrome != On)
    {
        Monochrome = On;
        if (Parent != NULL)
            Parent->ColourPlateHasChanged();
    }
}



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

>   void ColourPlate::SetNegative(ColourContext *Parent, BOOL On = TRUE)

    Author:     Jason_Williams (Xara Group Ltd) <camelotdev@xara.com>
    Date:       20/12/95

    Inputs:     Parent - the ColourContext this plate is attached to, or NULL if it is currently
                unattached. NOTE that it is vital that you pass the parent context in if it is
                attached, or colours in that context will remain incorrectly cached indefinitely!

                On - if TRUE, all output will be negated to give a photographic negative
                of the plate. if FALSE, the output will be left alone.

    Purpose:    Change this ColourPlate description

    Notes:      Every time the plate changes, the attached ColourContext must chnage its handle
                in order to "flush" all cached colours. After 65536 such flushes, it is possible
                for contexts to start using duplicate handles, so it is preferable that changes
                are made to plates as infrequently as possible.

    SeeAlso:    ColourContext

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

void ColourPlate::SetNegative(ColourContext *Parent, BOOL On)
{
    if (Negate != On)
    {
        Negate = On;
        if (Parent != NULL)
            Parent->ColourPlateHasChanged();
    }
}



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

>   void ColourPlate::SetActiveScreening(BOOL On = TRUE)

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Date:       30/8/96

    Inputs:     On - if TRUE, this indicates to internal EPS renderers they need to render using
                              the specified screening functions in this plate
                   - if FALSE, the output device will be unaffected.
                
    Purpose:    This function indicates whether the screen function, angle and frequency described
                in this plate should be used when rendering to EPS devices.

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

void ColourPlate::SetActiveScreening(BOOL On)
{
    ActiveScreens = On;
}


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

>   void ColourPlate::SetScreenFunction(ScreenType func)

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Date:       26/6/96
    Inputs:     func = the screen function to use
    Purpose:    Set a new screen function in this plate

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

void ColourPlate::SetScreenFunction(ScreenType func)
{
    ScreenFunction = func;
}



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

>   void ColourPlate::ResetScreenToDefaults(INT32 DeviceDPI = 1200, INT32 DefaultFrequency = 60)

    Author:     Jason_Williams (Xara Group Ltd) <camelotdev@xara.com>
    Date:       14/8/96

    Inputs:     DeviceDPI -         The anticipated resolution of the output (imagesetting) device
                DefaultFrequency -  The basic screen frequency (LPI) from which to derive the
                                    recommended defaults

    Purpose:    Resets this ColourPlate's screen angle to the recommended angle for
                its current Screen frequency (lpi) and the current output device
                resolution.

    SeeAlso:    ColourPlate::SetScreenInfo

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

void ColourPlate::ResetScreenToDefaults(INT32 DeviceDPI, INT32 DefaultFrequency)
{
#if !defined(EXCLUDE_FROM_RALPH) && !defined(EXCLUDE_FROM_XARALX)
    // Ask the XaraCMS for recommended angles for the current typesetter settings
    CMSScreenAngles RecAngles;
    XaraCMS* lpCMSMan = GetApplication()->GetCMSManager();

    // Set suitable defaults in case of a problem
    RecAngles.cyanfreq = RecAngles.magentafreq =
            RecAngles.yellowfreq = RecAngles.keyfreq = DefaultFrequency;

    RecAngles.cyanangle     = 105.0;
    RecAngles.magentaangle  = 75.0;
    RecAngles.yellowangle   = 90.0;
    RecAngles.keyangle      = 45.0;

    if (lpCMSMan != NULL)
        lpCMSMan->GetRecommendedAngles(DeviceDPI, DefaultFrequency, &RecAngles);

    // Now set a suitable default screen angle for the type of plate
    switch(Type)
    {
        case COLOURPLATE_CYAN:
            ScreenAngle     = RecAngles.cyanangle;
            ScreenFrequency = RecAngles.cyanfreq;
            break;

        case COLOURPLATE_MAGENTA:
            ScreenAngle     = RecAngles.magentaangle;
            ScreenFrequency = RecAngles.magentafreq;
            break;
        
        case COLOURPLATE_YELLOW:
            ScreenAngle     = RecAngles.yellowangle;
            ScreenFrequency = RecAngles.yellowfreq;
            break;
        
        case COLOURPLATE_KEY:
            ScreenAngle     = RecAngles.keyangle;
            ScreenFrequency = RecAngles.keyfreq;
            break;

        default:
            ScreenAngle = 45.0;
            ScreenFrequency = (double) DefaultFrequency;
            break;
    }
#endif
}

---