Lots of #include <iostream>s for Arch.

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

diff --git a/src/lib/render_subtitles.cc b/src/lib/render_subtitles.cc
index 53f71328302c7d6dcfc193c8b905eb08010796d7..e22c8c44fb19acac05131422d4302ccafb0d2488 100644 (file)
--- a/src/lib/render_subtitles.cc
+++ b/src/lib/render_subtitles.cc
@@ -20,9 +20,12 @@
 #include "render_subtitles.h"
 #include "types.h"
 #include "image.h"
+#include "cross.h"
+#include "font.h"
 #include <cairomm/cairomm.h>
 #include <pangomm.h>
 #include <boost/foreach.hpp>
+#include <iostream>
 
 using std::list;
 using std::cout;
@@ -30,11 +33,16 @@ using std::string;
 using std::min;
 using std::max;
 using std::pair;
+using std::cerr;
+using std::make_pair;
 using boost::shared_ptr;
 using boost::optional;
 
+static FcConfig* fc_config = 0;
+static list<pair<boost::filesystem::path, string> > fc_config_fonts;
+
 static PositionImage
-render_subtitle (dcp::SubtitleString const & subtitle, dcp::Size target)
+render_subtitle (dcp::SubtitleString const & subtitle, list<shared_ptr<Font> > fonts, dcp::Size target)
 {
        /* Calculate x and y scale factors.  These are only used to stretch
           the font away from its normal aspect ratio.
@@ -74,6 +82,66 @@ render_subtitle (dcp::SubtitleString const & subtitle, dcp::Size target)
                );
 
        Cairo::RefPtr<Cairo::Context> context = Cairo::Context::create (surface);
+
+       if (!fc_config) {
+               fc_config = FcConfigCreate ();
+       }
+
+       boost::filesystem::path font_file;
+       try {
+               font_file = shared_path () / "LiberationSans-Regular.ttf";
+       } catch (boost::filesystem::filesystem_error& e) {
+               /* Hack: try the debian/ubuntu location if getting the shared path failed */
+               font_file = "/usr/share/fonts/truetype/liberation/LiberationSans-Regular.ttf";
+       }
+
+       BOOST_FOREACH (shared_ptr<Font> i, fonts) {
+               if (i->id() == subtitle.font() && i->file ()) {
+                       font_file = i->file().get ();
+               }
+       }
+
+       list<pair<boost::filesystem::path, string> >::const_iterator existing = fc_config_fonts.begin ();
+       while (existing != fc_config_fonts.end() && existing->first != font_file) {
+               ++existing;
+       }
+
+       string font_name;
+       if (existing != fc_config_fonts.end ()) {
+               font_name = existing->second;
+       } else {
+               /* Make this font available to DCP-o-matic */
+               FcConfigAppFontAddFile (fc_config, reinterpret_cast<FcChar8 const *> (font_file.string().c_str ()));
+
+               FcPattern* pattern = FcPatternBuild (0, FC_FILE, FcTypeString, font_file.string().c_str(), static_cast<char *> (0));
+               FcObjectSet* object_set = FcObjectSetBuild (FC_FAMILY, FC_STYLE, FC_LANG, FC_FILE, static_cast<char *> (0));
+               FcFontSet* font_set = FcFontList (fc_config, pattern, object_set);
+               if (font_set) {
+                       for (int i = 0; i < font_set->nfont; ++i) {
+                               FcPattern* font = font_set->fonts[i];
+                               FcChar8* file;
+                               FcChar8* family;
+                               FcChar8* style;
+                               if (
+                                       FcPatternGetString (font, FC_FILE, 0, &file) == FcResultMatch &&
+                                       FcPatternGetString (font, FC_FAMILY, 0, &family) == FcResultMatch &&
+                                       FcPatternGetString (font, FC_STYLE, 0, &style) == FcResultMatch
+                                       ) {
+                                       font_name = reinterpret_cast<char const *> (family);
+                               }
+                       }
+
+                       FcFontSetDestroy (font_set);
+               }
+
+               FcObjectSetDestroy (object_set);
+               FcPatternDestroy (pattern);
+
+               fc_config_fonts.push_back (make_pair (font_file, font_name));
+       }
+
+       FcConfigSetCurrent (fc_config);
+
        Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create (context);
 
        layout->set_alignment (Pango::ALIGN_LEFT);
@@ -82,7 +150,7 @@ render_subtitle (dcp::SubtitleString const & subtitle, dcp::Size target)
 
        /* Render the subtitle at the top left-hand corner of image */
 
-       Pango::FontDescription font (subtitle.font().get_value_or ("Arial"));
+       Pango::FontDescription font (font_name);
        font.set_absolute_size (subtitle.size_in_pixels (target.height) * PANGO_SCALE);
        if (subtitle.italic ()) {
                font.set_style (Pango::STYLE_ITALIC);
@@ -164,11 +232,11 @@ render_subtitle (dcp::SubtitleString const & subtitle, dcp::Size target)
 }
 
 list<PositionImage>
-render_subtitles (list<dcp::SubtitleString> subtitles, dcp::Size target)
+render_subtitles (list<dcp::SubtitleString> subtitles, list<shared_ptr<Font> > fonts, dcp::Size target)
 {
        list<PositionImage> images;
        BOOST_FOREACH (dcp::SubtitleString const & i, subtitles) {
-               images.push_back (render_subtitle (i, target));
+               images.push_back (render_subtitle (i, fonts, target));
        }
        return images;
 }