#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;
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.
image->size().height,
Cairo::ImageSurface::format_stride_for_width (Cairo::FORMAT_ARGB32, image->size().width)
);
-
+
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);
/* 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);
}
layout->set_font_description (font);
layout->set_text (subtitle.text ());
-
+
/* Compute fade factor */
/* XXX */
float fade_factor = 1;
layout->update_from_cairo_context (context);
-
+
context->scale (xscale, yscale);
if (subtitle.effect() == dcp::SHADOW) {
layout->add_to_cairo_context (context);
context->stroke ();
}
-
+
int layout_width;
int layout_height;
layout->get_size (layout_width, layout_height);
+ int x = 0;
+ switch (subtitle.h_align ()) {
+ case dcp::HALIGN_LEFT:
+ /* h_position is distance between left of frame and left of subtitle */
+ x = subtitle.h_position() * target.width;
+ break;
+ case dcp::HALIGN_CENTER:
+ /* h_position is distance between centre of frame and centre of subtitle */
+ x = (0.5 + subtitle.h_position()) * target.width - layout_width / (PANGO_SCALE * 2);
+ break;
+ case dcp::HALIGN_RIGHT:
+ /* h_position is distance between right of frame and right of subtitle */
+ x = (1.0 - subtitle.h_position()) * target.width - layout_width / PANGO_SCALE;
+ break;
+ }
+
int y = 0;
switch (subtitle.v_align ()) {
- case dcp::TOP:
+ case dcp::VALIGN_TOP:
/* v_position is distance between top of frame and top of subtitle */
y = subtitle.v_position() * target.height;
break;
- case dcp::CENTER:
+ case dcp::VALIGN_CENTER:
/* v_position is distance between centre of frame and centre of subtitle */
- y = 0.5 + subtitle.v_position() * target.height - (layout_height / (PANGO_SCALE * 2));
+ y = (0.5 + subtitle.v_position()) * target.height - layout_height / (PANGO_SCALE * 2);
break;
- case dcp::BOTTOM:
+ case dcp::VALIGN_BOTTOM:
/* v_position is distance between bottom of frame and bottom of subtitle */
y = (1.0 - subtitle.v_position()) * target.height - layout_height / PANGO_SCALE;
break;
}
- return PositionImage (image, Position<int> ((image->size().width - layout_width * xscale / PANGO_SCALE) / 2, y));
+ return PositionImage (image, Position<int> (x, y));
}
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;
}
projects / dcpomatic.git / blobdiff