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Diffstat (limited to 'src/lib/render_text.h')
| -rw-r--r-- | src/lib/render_text.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/lib/render_text.h b/src/lib/render_text.h index 6ff91dce1..762d79446 100644 --- a/src/lib/render_text.h +++ b/src/lib/render_text.h @@ -18,14 +18,55 @@ */ + #include "position_image.h" #include "dcpomatic_time.h" #include "string_text.h" #include <dcp/util.h> +#include <memory> + namespace dcpomatic { class Font; } + std::string marked_up (std::list<StringText> subtitles, int target_height, float fade_factor, std::string font_name); std::list<PositionImage> render_text (std::list<StringText>, dcp::Size, dcpomatic::DCPTime, int); + + +class FontMetrics +{ +public: + FontMetrics(int target_height) + : _target_height(target_height) + {} + + float baseline_to_bottom(StringText const& subtitle); + float height(StringText const& subtitle); + +private: + /** Class to collect the properties of a subtitle which affect the metrics we care about + * i.e. baseline position and height. + */ + class Identifier + { + public: + Identifier(StringText const& subtitle); + + std::shared_ptr<dcpomatic::Font> font; + int size; + float aspect_adjust; + + bool operator<(Identifier const& other) const; + }; + + using Cache = std::map<Identifier, std::pair<float, float>>; + + Cache::iterator get(StringText const& subtitle); + + Cache _cache; + + int _target_height; +}; + |