#include "font_config.h"
#include "image.h"
#include "render_text.h"
-#include "types.h"
#include "util.h"
#include <dcp/raw_convert.h>
#include <dcp/warnings.h>
* for the actual render.
*/
static Glib::RefPtr<Pango::Layout>
-create_layout()
+create_layout(string font_name, string markup)
{
auto c_font_map = pango_cairo_font_map_new ();
DCPOMATIC_ASSERT (c_font_map);
auto c_context = pango_font_map_create_context (c_font_map);
DCPOMATIC_ASSERT (c_context);
auto context = Glib::wrap (c_context);
- return Pango::Layout::create (context);
-}
-
+ auto layout = Pango::Layout::create(context);
-static void
-setup_layout (Glib::RefPtr<Pango::Layout> layout, string font_name, string markup)
-{
layout->set_alignment (Pango::ALIGN_LEFT);
Pango::FontDescription font (font_name);
layout->set_font_description (font);
layout->set_markup (markup);
+
+ return layout;
}
span += " " + extra_attribute;
}
span += ">";
+
+ boost::algorithm::replace_all(text, "&", "&");
+ boost::algorithm::replace_all(text, "<", "<");
+ boost::algorithm::replace_all(text, ">", ">");
+
span += text;
span += "</span>";
return span;
* be written with letter_spacing either side. This means that to get a horizontal space x we
* need to write a " " with letter spacing (x - s) / 2, where s is the width of the " ".
*/
- auto layout = create_layout();
- setup_layout(layout, font_name, make_span(i, " ", {}));
+ auto layout = create_layout(font_name, make_span(i, " ", {}));
int space_width;
int dummy;
layout->get_pixel_size(space_width, dummy);
static string
-setup_font (StringText const& subtitle)
+setup_font(shared_ptr<const dcpomatic::Font> font)
{
auto font_file = default_font_file ();
- if (subtitle.font && subtitle.font->file()) {
- font_file = *subtitle.font->file();
+ if (font && font->file()) {
+ font_file = *font->file();
}
return FontConfig::instance()->make_font_available(font_file);
{
int y = 0;
switch (first.valign_standard) {
- case dcp::Standard::INTEROP:
+ case dcp::SubtitleStandard::INTEROP:
+ case dcp::SubtitleStandard::SMPTE_2014:
switch (first.v_align()) {
case dcp::VAlign::TOP:
/* v_position is distance from top of frame to subtitle baseline */
break;
}
break;
- case dcp::Standard::SMPTE:
+ case dcp::SubtitleStandard::SMPTE_2007:
+ case dcp::SubtitleStandard::SMPTE_2010:
switch (first.v_align()) {
case dcp::VAlign::TOP:
/* v_position is distance from top of frame to top of subtitle */
}
+struct Layout
+{
+ Position<int> position;
+ dcp::Size size;
+ Glib::RefPtr<Pango::Layout> pango;
+};
+
+
+/** @param subtitles A list of subtitles that are all on the same line,
+ * at the same time and with the same fade in/out.
+ */
+static Layout
+setup_layout(list<StringText> subtitles, dcp::Size target, DCPTime time, int frame_rate)
+{
+ DCPOMATIC_ASSERT(!subtitles.empty());
+ auto const& first = subtitles.front();
+
+ auto const font_name = setup_font(first.font);
+ auto const fade_factor = calculate_fade_factor(first, time, frame_rate);
+ auto const markup = marked_up(subtitles, target.height, fade_factor, font_name);
+ auto layout = create_layout(font_name, markup);
+ auto ink = layout->get_ink_extents();
+ return { { ink.get_x() / Pango::SCALE, ink.get_y() / Pango::SCALE }, { ink.get_width() / Pango::SCALE, ink.get_height() / Pango::SCALE }, layout };
+}
+
+
/** @param subtitles A list of subtitles that are all on the same line,
* at the same time and with the same fade in/out.
*/
nothing else yet.
*/
- DCPOMATIC_ASSERT (!subtitles.empty ());
- auto const& first = subtitles.front ();
+ DCPOMATIC_ASSERT(!subtitles.empty ());
+ auto const& first = subtitles.front();
+ auto const fade_factor = calculate_fade_factor(first, time, frame_rate);
- auto const font_name = setup_font (first);
- auto const fade_factor = calculate_fade_factor (first, time, frame_rate);
- auto const markup = marked_up (subtitles, target.height, fade_factor, font_name);
- auto layout = create_layout ();
- setup_layout (layout, font_name, markup);
- auto ink = layout->get_ink_extents();
- dcp::Size size{ink.get_width() / Pango::SCALE, ink.get_height() / Pango::SCALE};
+ auto layout = setup_layout(subtitles, target, time, frame_rate);
/* Calculate x and y scale factors. These are only used to stretch
the font away from its normal aspect ratio.
}
auto const border_width = first.effect() == dcp::Effect::BORDER ? (first.outline_width * target.width / 2048.0) : 0;
- size.width += 2 * ceil (border_width);
- size.height += 2 * ceil (border_width);
+ layout.size.width += 2 * ceil (border_width);
+ layout.size.height += 2 * ceil (border_width);
- size.width *= x_scale;
- size.height *= y_scale;
+ layout.size.width *= x_scale;
+ layout.size.height *= y_scale;
/* Shuffle the subtitle over by the border width (if we have any) so it's not cut off */
- int const x_offset = (-ink.get_x() / Pango::SCALE) + ceil(border_width);
- int const y_offset = -ink.get_y() / Pango::SCALE + ceil(border_width);
+ int const x_offset = -layout.position.x + ceil(border_width);
+ int const y_offset = -layout.position.y + ceil(border_width);
- auto image = create_image (size);
+ auto image = create_image(layout.size);
auto surface = create_surface (image);
auto context = Cairo::Context::create (surface);
context->set_line_width (1);
context->scale (x_scale, y_scale);
- layout->update_from_cairo_context (context);
+ layout.pango->update_from_cairo_context(context);
if (first.effect() == dcp::Effect::SHADOW) {
/* Drop-shadow effect */
set_source_rgba (context, first.effect_colour(), fade_factor);
context->move_to (x_offset + 4, y_offset + 4);
- layout->add_to_cairo_context (context);
+ layout.pango->add_to_cairo_context(context);
context->fill ();
}
context->set_line_width (border_width);
context->set_line_join (Cairo::LINE_JOIN_ROUND);
context->move_to (x_offset, y_offset);
- layout->add_to_cairo_context (context);
+ layout.pango->add_to_cairo_context (context);
context->stroke ();
}
set_source_rgba (context, first.colour(), fade_factor);
context->move_to (x_offset, y_offset);
- layout->add_to_cairo_context (context);
+ layout.pango->add_to_cairo_context (context);
context->fill ();
context->set_line_width (0.5);
context->move_to (x_offset, y_offset);
- layout->add_to_cairo_context (context);
+ layout.pango->add_to_cairo_context (context);
context->stroke ();
- int const x = x_position (first, target.width, size.width);
- int const y = y_position (first, target.height, ink.get_y() / Pango::SCALE, size.height);
+ int const x = x_position(first, target.width, layout.size.width);
+ int const y = y_position(first, target.height, layout.position.y, layout.size.height);
return PositionImage (image, Position<int>(max (0, x), max(0, y)));
}
return images;
}
+
+
+float
+FontMetrics::height(StringText const& subtitle)
+{
+ return get(subtitle)->second.second;
+}
+
+
+float
+FontMetrics::baseline_to_bottom(StringText const& subtitle)
+{
+ return get(subtitle)->second.first;
+}
+
+
+FontMetrics::Cache::iterator
+FontMetrics::get(StringText const& subtitle)
+{
+ auto id = Identifier(subtitle);
+
+ auto iter = _cache.find(id);
+ if (iter != _cache.end()) {
+ return iter;
+ }
+
+ auto const font_name = setup_font(subtitle.font);
+ auto copy = subtitle;
+ copy.set_text("Qypjg");
+ auto layout = create_layout(font_name, marked_up({copy}, _target_height, 1, font_name));
+ auto ink = layout->get_ink_extents();
+ auto const scale = float(_target_height * Pango::SCALE);
+ return _cache.insert({id, { ink.get_y() / scale, ink.get_height() / scale}}).first;
+}
+
+
+FontMetrics::Identifier::Identifier(StringText const& subtitle)
+ : font(subtitle.font)
+ , size(subtitle.size())
+ , aspect_adjust(subtitle.aspect_adjust())
+{
+
+}
+
+
+bool
+FontMetrics::Identifier::operator<(FontMetrics::Identifier const& other) const
+{
+ if (font != other.font) {
+ return font < other.font;
+ }
+
+ if (size != other.size) {
+ return size < other.size;
+ }
+
+ return aspect_adjust < other.aspect_adjust;
+}
+
projects / dcpomatic.git / blobdiff