Ask fontconfig to scan the system for fonts requested by text subtitle files (#2264).

[dcpomatic.git] / src / lib / string_text_file_content.cc

diff --git a/src/lib/string_text_file_content.cc b/src/lib/string_text_file_content.cc
index 9a25ef06f00ce6e10532721b88183a9d0ed46d9a..eea9362bbc384369b4fc05e0d00f4040724d500b 100644 (file)
--- a/src/lib/string_text_file_content.cc
+++ b/src/lib/string_text_file_content.cc
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2014-2018 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2014-2021 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
@@ -18,77 +18,108 @@
 
 */
 
-#include "string_text_file_content.h"
-#include "util.h"
-#include "string_text_file.h"
+
 #include "film.h"
 #include "font.h"
+#include "font_config.h"
+#include "string_text_file.h"
+#include "string_text_file_content.h"
 #include "text_content.h"
+#include "util.h"
 #include <dcp/raw_convert.h>
+#include <fontconfig/fontconfig.h>
 #include <libxml++/libxml++.h>
 #include <iostream>
 
+
 #include "i18n.h"
 
-using std::string;
+
 using std::cout;
-using boost::shared_ptr;
-using boost::optional;
+using std::list;
+using std::make_shared;
+using std::shared_ptr;
+using std::string;
 using dcp::raw_convert;
 using namespace dcpomatic;
 
+
 StringTextFileContent::StringTextFileContent (boost::filesystem::path path)
        : Content (path)
 {
-       text.push_back (shared_ptr<TextContent> (new TextContent (this, TEXT_OPEN_SUBTITLE, TEXT_UNKNOWN)));
+       text.push_back (make_shared<TextContent>(this, TextType::OPEN_SUBTITLE, TextType::UNKNOWN));
 }
 
-StringTextFileContent::StringTextFileContent (cxml::ConstNodePtr node, int version)
+
+StringTextFileContent::StringTextFileContent (cxml::ConstNodePtr node, int version, list<string>& notes)
        : Content (node)
-       , _length (node->number_child<ContentTime::Type> ("Length"))
+       , _length (node->number_child<ContentTime::Type>("Length"))
 {
-       text = TextContent::from_xml (this, node, version);
+       text = TextContent::from_xml (this, node, version, notes);
 }
 
+
 void
 StringTextFileContent::examine (shared_ptr<const Film> film, shared_ptr<Job> job)
 {
        Content::examine (film, job);
-       StringTextFile s (shared_from_this ());
+       StringTextFile file (shared_from_this());
 
        /* Default to turning these subtitles on */
        only_text()->set_use (true);
 
+       std::set<string> names;
+       for (auto const& subtitle: file.subtitles()) {
+               for (auto const& line: subtitle.lines) {
+                       for (auto const& block: line.blocks) {
+                               names.insert(block.font.get_value_or(""));
+                       }
+               }
+       }
+
+       for (auto name: names) {
+               auto path = FontConfig::instance()->system_font_with_name(name);
+               if (path) {
+                       only_text()->add_font(make_shared<Font>(name, *path));
+               } else {
+                       only_text()->add_font(make_shared<Font>(name));
+               }
+       }
+
        boost::mutex::scoped_lock lm (_mutex);
-       _length = s.length ();
-       only_text()->add_font (shared_ptr<Font> (new Font (TEXT_FONT_ID)));
+       _length = file.length();
 }
 
+
 string
 StringTextFileContent::summary () const
 {
        return path_summary() + " " + _("[subtitles]");
 }
 
+
 string
 StringTextFileContent::technical_summary () const
 {
        return Content::technical_summary() + " - " + _("Text subtitles");
+
 }
 
+
 void
 StringTextFileContent::as_xml (xmlpp::Node* node, bool with_paths) const
 {
-       node->add_child("Type")->add_child_text ("TextSubtitle");
+       node->add_child("Type")->add_child_text("TextSubtitle");
        Content::as_xml (node, with_paths);
 
        if (only_text()) {
-               only_text()->as_xml (node);
+               only_text()->as_xml(node);
        }
 
-       node->add_child("Length")->add_child_text (raw_convert<string> (_length.get ()));
+       node->add_child("Length")->add_child_text(raw_convert<string>(_length.get ()));
 }
 
+
 DCPTime
 StringTextFileContent::full_length (shared_ptr<const Film> film) const
 {
@@ -96,16 +127,18 @@ StringTextFileContent::full_length (shared_ptr<const Film> film) const
        return DCPTime (_length, frc);
 }
 
+
 DCPTime
 StringTextFileContent::approximate_length () const
 {
        return DCPTime (_length, FrameRateChange());
 }
 
+
 string
 StringTextFileContent::identifier () const
 {
-       string s = Content::identifier ();
+       auto s = Content::identifier ();
        s += "_" + only_text()->identifier();
        return s;
 }