1 files changed, 287 insertions, 0 deletions
diff --git a/src/text_asset_internal.cc b/src/text_asset_internal.cc
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+++ b/src/text_asset_internal.cc
@@ -0,0 +1,287 @@
+/*
+    Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
+
+    This file is part of libdcp.
+
+    libdcp is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    libdcp is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with libdcp.  If not, see <http://www.gnu.org/licenses/>.
+
+    In addition, as a special exception, the copyright holders give
+    permission to link the code of portions of this program with the
+    OpenSSL library under certain conditions as described in each
+    individual source file, and distribute linked combinations
+    including the two.
+
+    You must obey the GNU General Public License in all respects
+    for all of the code used other than OpenSSL.  If you modify
+    file(s) with this exception, you may extend this exception to your
+    version of the file(s), but you are not obligated to do so.  If you
+    do not wish to do so, delete this exception statement from your
+    version.  If you delete this exception statement from all source
+    files in the program, then also delete it here.
+*/
+
+
+/** @file  src/text_asset_internal.cc
+ *  @brief Internal TextAsset helpers
+ */
+
+
+#include "text_asset_internal.h"
+#include "subtitle_string.h"
+#include "compose.hpp"
+#include <cmath>
+
+
+using std::string;
+using std::map;
+using std::shared_ptr;
+using namespace dcp;
+
+
+order::Font::Font (shared_ptr<SubtitleString> s, Standard standard)
+{
+	if (s->font()) {
+		if (standard == Standard::SMPTE) {
+			_values["ID"] = s->font().get ();
+		} else {
+			_values["Id"] = s->font().get ();
+		}
+	}
+	_values["Italic"] = s->italic() ? "yes" : "no";
+	_values["Color"] = s->colour().to_argb_string();
+	_values["Size"] = raw_convert<string> (s->size());
+	_values["AspectAdjust"] = raw_convert<string>(s->aspect_adjust(), 1, true);
+	_values["Effect"] = effect_to_string (s->effect());
+	_values["EffectColor"] = s->effect_colour().to_argb_string();
+	_values["Script"] = "normal";
+	if (standard == Standard::SMPTE) {
+		_values["Underline"] = s->underline() ? "yes" : "no";
+	} else {
+		_values["Underlined"] = s->underline() ? "yes" : "no";
+	}
+	_values["Weight"] = s->bold() ? "bold" : "normal";
+}
+
+
+xmlpp::Element*
+order::Font::as_xml (xmlpp::Element* parent, Context&) const
+{
+	auto e = cxml::add_child(parent, "Font");
+	for (const auto& i: _values) {
+		e->set_attribute (i.first, i.second);
+	}
+	return e;
+}
+
+
+/** Modify our values so that they contain only those that are common to us and
+ *  other.
+ */
+void
+order::Font::take_intersection (Font other)
+{
+	map<string, string> inter;
+
+	for (auto const& i: other._values) {
+		auto t = _values.find (i.first);
+		if (t != _values.end() && t->second == i.second) {
+			inter.insert (i);
+		}
+	}
+
+	_values = inter;
+}
+
+
+/** Modify our values so that it contains only those keys that are not in other */
+void
+order::Font::take_difference (Font other)
+{
+	map<string, string> diff;
+	for (auto const& i: _values) {
+		if (other._values.find (i.first) == other._values.end()) {
+			diff.insert (i);
+		}
+	}
+
+	_values = diff;
+}
+
+
+bool
+order::Font::empty () const
+{
+	return _values.empty ();
+}
+
+
+xmlpp::Element*
+order::Part::as_xml (xmlpp::Element* parent, Context &) const
+{
+	return parent;
+}
+
+
+xmlpp::Element*
+order::String::as_xml (xmlpp::Element* parent, Context& context) const
+{
+	if (fabs(_space_before) > SPACE_BEFORE_EPSILON) {
+		auto space = cxml::add_child(parent, "Space");
+		auto size = raw_convert<string>(_space_before, 2);
+		if (context.standard == Standard::INTEROP) {
+			size += "em";
+		}
+		space->set_attribute("Size", size);
+	}
+	parent->add_child_text (_text);
+	return 0;
+}
+
+
+void
+order::Part::write_xml (xmlpp::Element* parent, order::Context& context) const
+{
+	if (!font.empty ()) {
+		parent = font.as_xml (parent, context);
+	}
+
+	parent = as_xml (parent, context);
+
+	for (auto i: children) {
+		i->write_xml (parent, context);
+	}
+}
+
+
+static void
+position_align (xmlpp::Element* e, order::Context& context, HAlign h_align, float h_position, VAlign v_align, float v_position, float z_position)
+{
+	if (h_align != HAlign::CENTER) {
+		if (context.standard == Standard::SMPTE) {
+			e->set_attribute ("Halign", halign_to_string (h_align));
+		} else {
+			e->set_attribute ("HAlign", halign_to_string (h_align));
+		}
+	}
+
+	if (fabs(h_position) > ALIGN_EPSILON) {
+		if (context.standard == Standard::SMPTE) {
+			e->set_attribute ("Hposition", raw_convert<string> (h_position * 100, 6));
+		} else {
+			e->set_attribute ("HPosition", raw_convert<string> (h_position * 100, 6));
+		}
+	}
+
+	if (context.standard == Standard::SMPTE) {
+		e->set_attribute ("Valign", valign_to_string (v_align));
+	} else {
+		e->set_attribute ("VAlign", valign_to_string (v_align));
+	}
+
+	if (fabs(v_position) > ALIGN_EPSILON) {
+		if (context.standard == Standard::SMPTE) {
+			e->set_attribute ("Vposition", raw_convert<string> (v_position * 100, 6));
+		} else {
+			e->set_attribute ("VPosition", raw_convert<string> (v_position * 100, 6));
+		}
+	} else {
+		if (context.standard == Standard::SMPTE) {
+			e->set_attribute ("Vposition", "0");
+		} else {
+			e->set_attribute ("VPosition", "0");
+		}
+	}
+
+	if (fabs(z_position) > ALIGN_EPSILON && context.standard == Standard::SMPTE) {
+		e->set_attribute("Zposition", raw_convert<string>(z_position * 100, 6));
+	}
+}
+
+
+xmlpp::Element*
+order::Text::as_xml (xmlpp::Element* parent, Context& context) const
+{
+	auto e = cxml::add_child(parent, "Text");
+
+	position_align(e, context, _h_align, _h_position, _v_align, _v_position, _z_position);
+
+	/* Interop only supports "horizontal" or "vertical" for direction, so only write this
+	   for SMPTE.
+	*/
+	if (_direction != Direction::LTR && context.standard == Standard::SMPTE) {
+		e->set_attribute ("Direction", direction_to_string (_direction));
+	}
+
+	for (auto const& ruby: _rubies) {
+		auto xml = cxml::add_child(e, "Ruby");
+		cxml::add_child(xml, "Rb")->add_child_text(ruby.base);
+		auto rt = cxml::add_child(xml, "Rt");
+		rt->add_child_text(ruby.annotation);
+		rt->set_attribute("Size", dcp::raw_convert<string>(ruby.size, 6));
+		rt->set_attribute("Position", ruby.position == RubyPosition::BEFORE ? "before" : "after");
+		rt->set_attribute("Offset", dcp::raw_convert<string>(ruby.offset, 6));
+		rt->set_attribute("Spacing", dcp::raw_convert<string>(ruby.spacing, 6));
+		rt->set_attribute("AspectAdjust", dcp::raw_convert<string>(ruby.aspect_adjust, 6));
+	}
+
+	return e;
+}
+
+
+xmlpp::Element*
+order::Subtitle::as_xml (xmlpp::Element* parent, Context& context) const
+{
+	auto e = cxml::add_child(parent, "Subtitle");
+	e->set_attribute ("SpotNumber", raw_convert<string> (context.spot_number++));
+	e->set_attribute ("TimeIn", _in.rebase(context.time_code_rate).as_string(context.standard));
+	e->set_attribute ("TimeOut", _out.rebase(context.time_code_rate).as_string(context.standard));
+	if (context.standard == Standard::SMPTE) {
+		e->set_attribute ("FadeUpTime", _fade_up.rebase(context.time_code_rate).as_string(context.standard));
+		e->set_attribute ("FadeDownTime", _fade_down.rebase(context.time_code_rate).as_string(context.standard));
+	} else {
+		e->set_attribute ("FadeUpTime", raw_convert<string> (_fade_up.as_editable_units_ceil(context.time_code_rate)));
+		e->set_attribute ("FadeDownTime", raw_convert<string> (_fade_down.as_editable_units_ceil(context.time_code_rate)));
+	}
+	return e;
+}
+
+
+bool
+order::Font::operator== (Font const & other) const
+{
+	return _values == other._values;
+}
+
+
+void
+order::Font::clear ()
+{
+	_values.clear ();
+}
+
+
+xmlpp::Element *
+order::Image::as_xml (xmlpp::Element* parent, Context& context) const
+{
+	auto e = cxml::add_child(parent, "Image");
+
+	position_align(e, context, _h_align, _h_position, _v_align, _v_position, _z_position);
+	if (context.standard == Standard::SMPTE) {
+		e->add_child_text ("urn:uuid:" + _id);
+	} else {
+		e->add_child_text (_id + ".png");
+	}
+
+	return e;
+}