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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Authors:
*
* Copyright (C) 2012 Authors
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include <set>
#include <glibmm/i18n.h>
#include <glibmm/regex.h>
#include <gtkmm/messagedialog.h>
#include <gtkmm/checkbutton.h>
#include <gtkmm/scrolledwindow.h>
#include <gtkmm/textview.h>
#include "font-substitution.h"
#include "desktop.h"
#include "document.h"
#include "inkscape.h"
#include "selection-chemistry.h"
#include "text-editing.h"
#include "object/sp-root.h"
#include "object/sp-text.h"
#include "object/sp-textpath.h"
#include "object/sp-flowtext.h"
#include "object/sp-flowdiv.h"
#include "object/sp-tspan.h"
#include "libnrtype/FontFactory.h"
#include "libnrtype/font-instance.h"
#include "ui/dialog-events.h"
namespace Inkscape {
namespace UI {
namespace Dialog {
FontSubstitution::FontSubstitution()
= default;
FontSubstitution::~FontSubstitution()
= default;
void
FontSubstitution::checkFontSubstitutions(SPDocument* doc)
{
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
int show_dlg = prefs->getInt("/options/font/substitutedlg", 0);
if (show_dlg) {
Glib::ustring out;
std::vector<SPItem*> l = getFontReplacedItems(doc, &out);
if (out.length() > 0) {
show(out, l);
}
}
}
void
FontSubstitution::show(Glib::ustring out, std::vector<SPItem*> &l)
{
Gtk::MessageDialog warning(_("\nSome fonts are not available and have been substituted."),
false, Gtk::MESSAGE_INFO, Gtk::BUTTONS_OK, true);
warning.set_resizable(true);
warning.set_title(_("Font substitution"));
GtkWidget *dlg = GTK_WIDGET(warning.gobj());
sp_transientize(dlg);
Gtk::TextView * textview = new Gtk::TextView();
textview->set_editable(false);
textview->set_wrap_mode(Gtk::WRAP_WORD);
textview->show();
textview->get_buffer()->set_text(_(out.c_str()));
Gtk::ScrolledWindow * scrollwindow = new Gtk::ScrolledWindow();
scrollwindow->add(*textview);
scrollwindow->set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
scrollwindow->set_shadow_type(Gtk::SHADOW_IN);
scrollwindow->set_size_request(0, 100);
scrollwindow->show();
Gtk::CheckButton *cbSelect = new Gtk::CheckButton();
cbSelect->set_label(_("Select all the affected items"));
cbSelect->set_active(true);
cbSelect->show();
Gtk::CheckButton *cbWarning = new Gtk::CheckButton();
cbWarning->set_label(_("Don't show this warning again"));
cbWarning->show();
auto box = warning.get_content_area();
box->set_spacing(2);
box->pack_start(*scrollwindow, true, true, 4);
box->pack_start(*cbSelect, false, false, 0);
box->pack_start(*cbWarning, false, false, 0);
warning.run();
if (cbWarning->get_active()) {
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
prefs->setInt("/options/font/substitutedlg", 0);
}
if (cbSelect->get_active()) {
SPDesktop *desktop = SP_ACTIVE_DESKTOP;
Inkscape::Selection *selection = desktop->getSelection();
selection->clear();
selection->setList(l);
}
}
/*
* 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 through 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.
*/
std::vector<SPItem*> FontSubstitution::getFontReplacedItems(SPDocument* doc, Glib::ustring *out)
{
SPDesktop *desktop = SP_ACTIVE_DESKTOP;
std::vector<SPItem*> allList;
std::vector<SPItem*> outList,x,y;
std::set<Glib::ustring> setErrors;
std::set<Glib::ustring> setFontSpans;
std::map<SPItem *, Glib::ustring> mapFontStyles;
allList = get_all_items(x, doc->getRoot(), desktop, false, false, true, y);
for(auto item : allList){
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 != nullptr) {
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 != nullptr) {
family = SP_TEXT(parent_text)->layout.getFontFamily(0);
// Add all the spans fonts to the set
for (unsigned int f=0; f < parent_text->children.size(); f++) {
family = SP_TEXT(parent_text)->layout.getFontFamily(f);
setFontSpans.insert(family);
}
}
}
if (style) {
gchar const *style_font = nullptr;
if (style->font_family.set)
style_font = style->font_family.value();
else if (style->font_specification.set)
style_font = style->font_specification.value();
else
style_font = style->font_family.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_reverse_iterator mapIter;
for (mapIter = mapFontStyles.rbegin(); mapIter != mapFontStyles.rend(); ++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(auto font : vFonts) {
// 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.push_back(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;
}
Glib::ustring FontSubstitution::getSubstituteFontName (Glib::ustring font)
{
Glib::ustring out = font;
PangoFontDescription *descr = pango_font_description_new();
pango_font_description_set_family(descr,font.c_str());
font_instance *res = (font_factory::Default())->Face(descr);
if (res->pFont) {
PangoFontDescription *nFaceDesc = pango_font_describe(res->pFont);
out = sp_font_description_get_family(nFaceDesc);
}
pango_font_description_free(descr);
return out;
}
} // namespace Dialog
} // namespace UI
} // namespace Inkscape
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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