static const gchar * s_evalProperty (const PP_Property * pProp,
const PP_AttrProp * pAttrProp,
const PD_Document * pDoc,
bool bExpandStyles)
{
const gchar * szValue = NULL;
if (pAttrProp->getProperty (pProp->getName(), szValue))
{
return szValue;
}
if (!bExpandStyles) return NULL;
PD_Style * pStyle = _getStyle (pAttrProp, pDoc);
int i = 0;
while (pStyle && (i < pp_BASEDON_DEPTH_LIMIT))
{
if (pStyle->getProperty (pProp->getName (), szValue))
{
return szValue;
}
pStyle = pStyle->getBasedOn ();
i++;
}
return NULL;
}
const gchar * PP_evalProperty (const gchar * pszName,
const PP_AttrProp * pSpanAttrProp,
const PP_AttrProp * pBlockAttrProp,
const PP_AttrProp * pSectionAttrProp,
const PD_Document * pDoc,
bool bExpandStyles)
{
// find the value for the given property
// by evaluating it in the contexts given.
// use the CSS inheritance as necessary.
if (!pszName || !*pszName)
{
UT_DEBUGMSG(("PP_evalProperty: null property given\n"));
return NULL;
}
if (pDoc == 0) bExpandStyles = false;
const PP_Property * pProp = PP_lookupProperty(pszName);
if (!pProp)
{
UT_DEBUGMSG(("PP_evalProperty: unknown property \'%s\'\n",pszName));
return NULL;
}
/* Not all properties can have a value of inherit, but we're not validating here.
* This is not to be confused with automatic inheritance - the difference is whether
* to take the default value (for when no value is specified).
*/
bool bInherit = false;
// see if the property is on the Span item.
const gchar * szValue = NULL;
// TODO: ?? make lookup more efficient by tagging each property with scope (block, char, section)
if (pSpanAttrProp)
{
szValue = s_evalProperty (pProp, pSpanAttrProp, pDoc, bExpandStyles);
if (szValue)
if (strcmp (szValue, "inherit") == 0)
{
szValue = NULL;
bInherit = true;
}
if ((szValue == NULL) && (bInherit || pProp->canInherit ()))
{
bInherit = false;
if (pBlockAttrProp)
{
szValue = s_evalProperty (pProp, pBlockAttrProp, pDoc, bExpandStyles);
if (szValue)
if (strcmp (szValue, "inherit") == 0)
{
szValue = NULL;
bInherit = true;
}
if ((szValue == NULL) && (bInherit || pProp->canInherit ()))
{
bInherit = false;
if (pSectionAttrProp)
{
szValue = s_evalProperty (pProp, pSectionAttrProp, pDoc, bExpandStyles);
if (szValue)
if (strcmp (szValue, "inherit") == 0)
{
szValue = NULL;
bInherit = true;
}
if ((szValue == NULL) && (bInherit || pProp->canInherit ()))
{
const PP_AttrProp * pDocAP = pDoc->getAttrProp ();
if (pDocAP)
pDocAP->getProperty (pszName, szValue);
}
}
}
}
}
}
else if (pBlockAttrProp)
{
szValue = s_evalProperty (pProp, pBlockAttrProp, pDoc, bExpandStyles);
if (szValue)
if (strcmp (szValue, "inherit") == 0)
{
szValue = NULL;
bInherit = true;
}
if ((szValue == NULL) && (bInherit || pProp->canInherit ()))
{
bInherit = false;
if (pSectionAttrProp)
{
szValue = s_evalProperty (pProp, pSectionAttrProp, pDoc, bExpandStyles);
if (szValue)
if (strcmp (szValue, "inherit") == 0)
{
szValue = NULL;
bInherit = true;
}
if ((szValue == NULL) && (bInherit || pProp->canInherit ()))
{
const PP_AttrProp * pDocAP = pDoc->getAttrProp ();
if (pDocAP)
pDocAP->getProperty (pszName, szValue);
}
}
}
}
else if (pSectionAttrProp)
{
szValue = s_evalProperty (pProp, pSectionAttrProp, pDoc, bExpandStyles);
if (szValue)
if (strcmp (szValue, "inherit") == 0)
{
szValue = NULL;
bInherit = true;
}
if ((szValue == NULL) && (bInherit || pProp->canInherit ()))
{
const PP_AttrProp * pDocAP = pDoc->getAttrProp ();
if (pDocAP)
pDocAP->getProperty (pszName, szValue);
}
}
else
{
const PP_AttrProp * pDocAP = pDoc->getAttrProp ();
if (pDocAP)
{
pDocAP->getProperty (pszName, szValue);
// dom-dir requires special treatment at document level
if(szValue && strcmp(pszName, "dom-dir") == 0)
{
if( strcmp(szValue, "logical-ltr") == 0
|| strcmp(szValue, "logical-rtl") == 0)
szValue += 8;
}
}
}
if (szValue)
if (strcmp (szValue, "inherit") == 0) // shouldn't happen, but doesn't hurt to check
szValue = NULL;
if (szValue == NULL)
if (bExpandStyles)
{
PD_Style * pStyle = 0;
if (pDoc->getStyle ("Normal", &pStyle))
{
/* next to last resort -- check for this property in the Normal style
*/
pStyle->getProperty (pszName, szValue);
if (szValue)
if (strcmp (szValue, "inherit") == 0)
szValue = NULL;
}
}
if(szValue == NULL && pDoc && (bInherit || pProp->canInherit ()))
{
// see if the doc has a value for this prop
const PP_AttrProp * pAP = pDoc->getAttrProp();
if(pAP)
{
pAP->getProperty(pszName, szValue);
}
}
if (szValue == NULL)
szValue = pProp->getInitial (); // which may itself be NULL, but that is a bad thing - FIXME!!
return szValue;
}
