fontlist.cpp

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// $Id: fontlist.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
----------------------------------

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=================================XARAHEADEREND============================
 */

// Implementation code for the font usage list

/*
*/

#include "camtypes.h"
#include "fontlist.h"
//#include "errors.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "document.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "node.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "nodetext.h"
//#include "app.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "fontman.h"

DECLARE_SOURCE("$Revision: 1282 $");

CC_IMPLEMENT_MEMDUMP(FontListItem, CC_CLASS_MEMDUMP);
CC_IMPLEMENT_MEMDUMP(FontList, CC_CLASS_MEMDUMP);

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


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

>   FontListItem::FontListItem()

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/4/95
    Inputs:     -
    Returns:    -
    Purpose:    Default constructor.

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

FontListItem::FontListItem()
{
    FontStyle=0;
    FontUsage=0;
    Class=FC_UNDEFINED;
}

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

>   void FontListItem::Initialise(String_64& String, INT32 Style, FontClass FClass = FC_UNDEFINED)

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/4/95
    Inputs:     String  - Typeface name of item
                Style   - &1 for Bold, &2 for Italic
                FClass  - FontClass of item (TrueType, ATM, etc)
    Returns:    -
    Purpose:    Initalise a fontlist item

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

void FontListItem::Initialise(String_64& String, INT32 Style, FontClass FClass)
{
    ENSURE(FontUsage==0, "None NULL FontListItem initialised!");

    FontName=String;
    FontStyle=Style;
    FontUsage=1;
    Class=FClass;
}



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

>   FontList::FontList()

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/4/95
    Inputs:     -
    Returns:    -
    Purpose:    Default constructor.

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

FontList::FontList()
{
}

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

>   FontList::~FontList()

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/4/95
    Inputs:     -
    Returns:    -
    Purpose:    Default destructor, will remove all entries in the font list before it gets
                deleted.

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

FontList::~FontList()
{
    TheFontList.DeleteAll();
}



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

>   BOOL FontList::Build(Document* pDoc)

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/4/95
    Inputs:     pDoc = a pointer to the document to build the fontlist for
    Returns:    TRUE if the font list was successfully built
                FALSE if not
    Purpose:    Builds a list of font names, which are used in this document. Each item in the
                list contains a usage count too.

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

BOOL FontList::Build(Document* pDoc)
{
    ERROR2IF(pDoc==NULL,FALSE,"FontList::Build passed a NULL document");

    // Delete all previous entries
    TheFontList.DeleteAll();

    Node* pNode = pDoc->GetFirstNode();
    ENSURE(pNode != NULL,"No first node!");
    if (!EnumerateItems(pNode))
    {
        TheFontList.DeleteAll();
        return FALSE;
    }
    return TRUE;
}



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

>   BOOL FontList::EnumerateItems(Node* pNode)

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/5/95
    Inputs:     pNode = a pointer to a node to start searching from
    Outputs:    -
    Returns:    TRUE if the whole document tree was searched
                FALSE if failed.
    Purpose:    Scans the entire tree from the node given on entry. All fonts used in this
                (sub)tree are compiled into a list. Font attributes of bold and italic are
                taken into account. Separate records are created if the same fontname has
                different style attributes applied in different areas of the tree. A usage
                count is also kept of every font found.

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

BOOL FontList::EnumerateItems(Node* pNode)
{
    while (pNode!=NULL)
    {
        if (IS_A(pNode,TextChar))
        {
            TextChar* pChar = (TextChar*)pNode;
            AppliedAtts.RemoveAll();

            if (pChar->FindAppliedAttributes(&AppliedAtts))
            {
                void* pFontName;

                if( AppliedAtts.Lookup( CC_RUNTIME_CLASS(AttrTxtFontTypeface), pFontName ) )
                {
                    void *pBold, *pItalic;
                    INT32 style=0;

                    if( AppliedAtts.Lookup( CC_RUNTIME_CLASS(AttrTxtBold), pBold ) )
                    {
                        AttrTxtBold* pBoldAttr = (AttrTxtBold*) pBold;
                        TxtBoldAttribute* pAttr = &(pBoldAttr->Value);
                        if ((pAttr) && (pAttr->BoldOn))
                            style+=1;
                    }

                    if( AppliedAtts.Lookup(  CC_RUNTIME_CLASS(AttrTxtItalic), pItalic ) )
                    {
                        AttrTxtItalic* pItalicAttr = (AttrTxtItalic*)pItalic;
                        TxtItalicAttribute* pAttr = &(pItalicAttr->Value);
                        if ((pAttr) && (pAttr->ItalicOn))
                            style+=2;
                    }

                    AttrTxtFontTypeface* pFontAttr = (AttrTxtFontTypeface*)pFontName;

                    FontClass Class = FONTMANAGER->GetFontClass(pFontAttr->Value.HTypeface);

                    String_64 FName;
                    if (FONTMANAGER->GetFontName(pFontAttr->Value.HTypeface, FName))
                    {
                        FontListItem* FListObj = FindFontMatch(FName,style);
                        if (FListObj)
                            FListObj->IncUsage();
                        else
                        {
                            FListObj = new FontListItem;
                            if (!FListObj)
                                return FALSE;

                            FListObj->Initialise(FName,style, Class);
                            AddItem(FListObj);
                        }
                    }
                }
            }
        }

        Node* qNode=pNode->FindFirstChild();
        if (qNode)
        {
            if (!EnumerateItems(qNode))
                return FALSE;
        }

        pNode=pNode->FindNext();
    }

    return TRUE;
}



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

>   FontListItem* FontList::FindFontMatch(const String_64& FName, INT32 style, FontClass Class = FC_UNDEFINED)

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    5/12/94
    Inputs:     fname = a font name to search for
                style = a style word
                        b0 = 1 then bold is current
                        b1 = 1 then italic is current
                Class = Font class of item
    Outputs:    -
    Returns:    NULL if unable to find a match for this font name in the list
    Purpose:    Trys to find the font name in our list

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

FontListItem* FontList::FindFontMatch(const String_64& fname, INT32 style, FontClass Class)
{
    FontListItem* pFont = GetFirstItem();
    while (pFont!=NULL)
    {
        if ( (pFont->GetFontName()==fname) && 
             (pFont->GetFontStyle()==style) &&
             ((pFont->GetFontClass()==Class) || Class == FC_UNDEFINED)
           )
            return pFont;

        pFont = GetNextItem(pFont);
    }
    return NULL;
}


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

>   BOOL FontList::AddItem(FontListItem* pFListItem)

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    5/12/94
    Inputs:     pFListItem = ptr to a font item to add to our list
    Outputs:    -
    Returns:    TRUE if successfully initialises, FALSE otherwise
    Purpose:    Adds a font list item to our list

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

BOOL FontList::AddItem(FontListItem* pFListItem)
{
    TheFontList.AddTail(pFListItem);
    return TRUE;
}


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

>   FontListItem* FontList::GetFirstItem()

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/4/95
    Inputs:     -
    Outputs:    -
    Returns:    First Font object in the list, or NULL if the list is empty
    Purpose:    Lets you get the first Font object in the list

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

FontListItem* FontList::GetFirstItem()
{
    return ((FontListItem*)TheFontList.GetHead());
}

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

>   FontListItem* FontList::GetNextItem(FontListItem* pCurrFontItem)

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/4/95
    Inputs:     pCurrFontItem = ptr the current font item in the list
    Outputs:    -
    Returns:    Returns the next font item after pCurrFontItem, 
                or NULL if there isn't a next one
    Purpose:    Lets you get the next font item in the list

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

FontListItem* FontList::GetNextItem(FontListItem* pCurrFontItem)
{
    return ((FontListItem*)TheFontList.GetNext(pCurrFontItem));
}




/*
BOOL KernCode::ExportRender(RenderRegion* pRegion)
{
#if EXPORT_TEXT
    if (pRegion->IsKindOf(CC_RUNTIME_CLASS(EPSRenderRegion)))
    {
        EPSExportDC *pDC=(EPSExportDC*)pRegion->GetRenderDC();

        // Use illustrator 3.0 compatible token.
        // Any vertical movement is done by BaselineShift
        INT32 autokern = 0;
        pDC->OutputValue(autokern);
        pDC->OutputValue(Value.x);
        pDC->OutputToken("Tk");
        pDC->OutputNewLine();
        return TRUE;
    }
#endif
    return FALSE;
}
*/

---