/*
* Find all the fonts that are in the document but not available on the users system
* and have been substituted for other fonts
*
* Return a list of SPItems where fonts have been substituted.
*
* Walk thru all the objects ...
* a. Build up a list of the objects with fonts defined in the style attribute
* b. Build up a list of the objects rendered fonts - taken for the objects layout/spans
* If there are fonts in a. that are not in b. then those fonts have been substituted.
*/
GSList * FontSubstitution::getFontReplacedItems(SPDocument* doc, Glib::ustring *out)
{
SPDesktop *desktop = SP_ACTIVE_DESKTOP;
GSList *allList = NULL;
GSList *outList = NULL;
std::set<Glib::ustring> setErrors;
std::set<Glib::ustring> setFontSpans;
std::map<SPItem *, Glib::ustring> mapFontStyles;
allList = get_all_items(NULL, doc->getRoot(), desktop, false, false, true, NULL);
for (GSList *i = allList; i != NULL; i = i->next) {
SPItem *item = SP_ITEM(i->data);
SPStyle *style = item->style;
Glib::ustring family = "";
if (is_top_level_text_object (item)) {
// Should only need to check the first span, since the others should be covered by TSPAN's etc
family = te_get_layout(item)->getFontFamily(0);
setFontSpans.insert(family);
}
else if (SP_IS_TEXTPATH(item)) {
SPTextPath const *textpath = SP_TEXTPATH(item);
if (textpath->originalPath != NULL) {
family = SP_TEXT(item->parent)->layout.getFontFamily(0);
setFontSpans.insert(family);
}
}
else if (SP_IS_TSPAN(item) || SP_IS_FLOWTSPAN(item)) {
// is_part_of_text_subtree (item)
// TSPAN layout comes from the parent->layout->_spans
SPObject *parent_text = item;
while (parent_text && !SP_IS_TEXT(parent_text)) {
parent_text = parent_text->parent;
}
if (parent_text != NULL) {
family = SP_TEXT(parent_text)->layout.getFontFamily(0);
// Add all the spans fonts to the set
gint ii = 0;
for (SPObject *child = parent_text->firstChild() ; child ; child = child->getNext() ) {
family = SP_TEXT(parent_text)->layout.getFontFamily(ii);
setFontSpans.insert(family);
ii++;
}
}
}
if (style) {
gchar const *style_font = NULL;
if (style->font_family.set)
style_font = style->font_family.value;
else if (style->font_specification.set)
style_font = style->font_specification.value;
else if (style->font_family.value)
style_font = style->font_family.value;
else if (style->font_specification.value)
style_font = style->font_specification.value;
if (style_font) {
if (has_visible_text(item)) {
mapFontStyles.insert(std::make_pair (item, style_font));
}
}
}
}
// Check if any document styles are not in the actual layout
std::map<SPItem *, Glib::ustring>::const_iterator mapIter;
for (mapIter = mapFontStyles.begin(); mapIter != mapFontStyles.end(); ++mapIter) {
SPItem *item = mapIter->first;
Glib::ustring fonts = mapIter->second;
// CSS font fallbacks can have more that one font listed, split the font list
std::vector<Glib::ustring> vFonts = Glib::Regex::split_simple("," , fonts);
bool fontFound = false;
for(size_t i=0; i<vFonts.size(); i++) {
Glib::ustring font = vFonts[i];
// trim whitespace
size_t startpos = font.find_first_not_of(" \n\r\t");
size_t endpos = font.find_last_not_of(" \n\r\t");
if(( std::string::npos == startpos ) || ( std::string::npos == endpos)) {
continue; // empty font name
}
font = font.substr( startpos, endpos-startpos+1 );
std::set<Glib::ustring>::const_iterator iter = setFontSpans.find(font);
if (iter != setFontSpans.end() ||
font == Glib::ustring("sans-serif") ||
font == Glib::ustring("Sans") ||
font == Glib::ustring("serif") ||
font == Glib::ustring("Serif") ||
font == Glib::ustring("monospace") ||
font == Glib::ustring("Monospace")) {
fontFound = true;
break;
}
}
if (fontFound == false) {
Glib::ustring subName = getSubstituteFontName(fonts);
Glib::ustring err = Glib::ustring::compose(
_("Font '%1' substituted with '%2'"), fonts.c_str(), subName.c_str());
setErrors.insert(err);
outList = g_slist_prepend (outList, item);
}
}
std::set<Glib::ustring>::const_iterator setIter;
for (setIter = setErrors.begin(); setIter != setErrors.end(); ++setIter) {
Glib::ustring err = (*setIter);
out->append(err + "\n");
g_warning("%s", err.c_str());
}
return outList;
}
