/**************************************************************************/ /* font.h */ /**************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /**************************************************************************/ /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */ /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ /* "Software"), to deal in the Software without restriction, including */ /* without limitation the rights to use, copy, modify, merge, publish, */ /* distribute, sublicense, and/or sell copies of the Software, and to */ /* permit persons to whom the Software is furnished to do so, subject to */ /* the following conditions: */ /* */ /* The above copyright notice and this permission notice shall be */ /* included in all copies or substantial portions of the Software. */ /* */ /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */ /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /**************************************************************************/ #ifndef FONT_H #define FONT_H #include "core/io/resource.h" #include "core/templates/lru.h" #include "core/templates/rb_map.h" #include "scene/resources/texture.h" #include "servers/text_server.h" class TextLine; class TextParagraph; /*************************************************************************/ /* Font */ /*************************************************************************/ class Font : public Resource { GDCLASS(Font, Resource); struct ShapedTextKey { String text; int font_size = 14; float width = 0.f; BitField<TextServer::JustificationFlag> jst_flags = TextServer::JUSTIFICATION_NONE; BitField<TextServer::LineBreakFlag> brk_flags = TextServer::BREAK_MANDATORY; TextServer::Direction direction = TextServer::DIRECTION_AUTO; TextServer::Orientation orientation = TextServer::ORIENTATION_HORIZONTAL; bool operator==(const ShapedTextKey &p_b) const { return (font_size == p_b.font_size) && (width == p_b.width) && (jst_flags == p_b.jst_flags) && (brk_flags == p_b.brk_flags) && (direction == p_b.direction) && (orientation == p_b.orientation) && (text == p_b.text); } ShapedTextKey() {} ShapedTextKey(const String &p_text, int p_font_size, float p_width, BitField<TextServer::JustificationFlag> p_jst_flags, BitField<TextServer::LineBreakFlag> p_brk_flags, TextServer::Direction p_direction, TextServer::Orientation p_orientation) { text = p_text; font_size = p_font_size; width = p_width; jst_flags = p_jst_flags; brk_flags = p_brk_flags; direction = p_direction; orientation = p_orientation; } }; struct ShapedTextKeyHasher { _FORCE_INLINE_ static uint32_t hash(const ShapedTextKey &p_a) { uint32_t hash = p_a.text.hash(); hash = hash_murmur3_one_32(p_a.font_size, hash); hash = hash_murmur3_one_float(p_a.width, hash); hash = hash_murmur3_one_32(p_a.brk_flags | (p_a.jst_flags << 6) | (p_a.direction << 12) | (p_a.orientation << 15), hash); return hash_fmix32(hash); } }; // Shaped string cache. mutable LRUCache<ShapedTextKey, Ref<TextLine>, ShapedTextKeyHasher> cache; mutable LRUCache<ShapedTextKey, Ref<TextParagraph>, ShapedTextKeyHasher> cache_wrap; protected: // Output. mutable TypedArray<RID> rids; mutable bool dirty_rids = true; // Fallbacks. static constexpr int MAX_FALLBACK_DEPTH = 64; TypedArray<Font> fallbacks; static void _bind_methods(); virtual void _update_rids_fb(const Ref<Font> &p_f, int p_depth) const; virtual void _update_rids() const; virtual bool _is_cyclic(const Ref<Font> &p_f, int p_depth) const; virtual void reset_state() override; public: virtual void _invalidate_rids(); static constexpr int DEFAULT_FONT_SIZE = 16; // Fallbacks. virtual void set_fallbacks(const TypedArray<Font> &p_fallbacks); virtual TypedArray<Font> get_fallbacks() const; // Output. virtual RID find_variation(const Dictionary &p_variation_coordinates, int p_face_index = 0, float p_strength = 0.0, Transform2D p_transform = Transform2D()) const { return RID(); }; virtual RID _get_rid() const { return RID(); }; virtual TypedArray<RID> get_rids() const; // Font metrics. virtual real_t get_height(int p_font_size) const; virtual real_t get_ascent(int p_font_size) const; virtual real_t get_descent(int p_font_size) const; virtual real_t get_underline_position(int p_font_size) const; virtual real_t get_underline_thickness(int p_font_size) const; virtual String get_font_name() const; virtual String get_font_style_name() const; virtual BitField<TextServer::FontStyle> get_font_style() const; virtual int get_font_weight() const; virtual int get_font_stretch() const; virtual int get_spacing(TextServer::SpacingType p_spacing) const { return 0; }; virtual Dictionary get_opentype_features() const; // Drawing string. virtual void set_cache_capacity(int p_single_line, int p_multi_line); virtual Size2 get_string_size(const String &p_text, HorizontalAlignment p_alignment = HORIZONTAL_ALIGNMENT_LEFT, float p_width = -1, int p_font_size = DEFAULT_FONT_SIZE, BitField<TextServer::JustificationFlag> p_jst_flags = TextServer::JUSTIFICATION_KASHIDA | TextServer::JUSTIFICATION_WORD_BOUND, TextServer::Direction p_direction = TextServer::DIRECTION_AUTO, TextServer::Orientation p_orientation = TextServer::ORIENTATION_HORIZONTAL) const; virtual Size2 get_multiline_string_size(const String &p_text, HorizontalAlignment p_alignment = HORIZONTAL_ALIGNMENT_LEFT, float p_width = -1, int p_font_size = DEFAULT_FONT_SIZE, int p_max_lines = -1, BitField<TextServer::LineBreakFlag> p_brk_flags = TextServer::BREAK_MANDATORY | TextServer::BREAK_WORD_BOUND, BitField<TextServer::JustificationFlag> p_jst_flags = TextServer::JUSTIFICATION_KASHIDA | TextServer::JUSTIFICATION_WORD_BOUND, TextServer::Direction p_direction = TextServer::DIRECTION_AUTO, TextServer::Orientation p_orientation = TextServer::ORIENTATION_HORIZONTAL) const; virtual void draw_string(RID p_canvas_item, const Point2 &p_pos, const String &p_text, HorizontalAlignment p_alignment = HORIZONTAL_ALIGNMENT_LEFT, float p_width = -1, int p_font_size = DEFAULT_FONT_SIZE, const Color &p_modulate = Color(1.0, 1.0, 1.0), BitField<TextServer::JustificationFlag> p_jst_flags = TextServer::JUSTIFICATION_KASHIDA | TextServer::JUSTIFICATION_WORD_BOUND, TextServer::Direction p_direction = TextServer::DIRECTION_AUTO, TextServer::Orientation p_orientation = TextServer::ORIENTATION_HORIZONTAL) const; virtual void draw_multiline_string(RID p_canvas_item, const Point2 &p_pos, const String &p_text, HorizontalAlignment p_alignment = HORIZONTAL_ALIGNMENT_LEFT, float p_width = -1, int p_font_size = DEFAULT_FONT_SIZE, int p_max_lines = -1, const Color &p_modulate = Color(1.0, 1.0, 1.0), BitField<TextServer::LineBreakFlag> p_brk_flags = TextServer::BREAK_MANDATORY | TextServer::BREAK_WORD_BOUND, BitField<TextServer::JustificationFlag> p_jst_flags = TextServer::JUSTIFICATION_KASHIDA | TextServer::JUSTIFICATION_WORD_BOUND, TextServer::Direction p_direction = TextServer::DIRECTION_AUTO, TextServer::Orientation p_orientation = TextServer::ORIENTATION_HORIZONTAL) const; virtual void draw_string_outline(RID p_canvas_item, const Point2 &p_pos, const String &p_text, HorizontalAlignment p_alignment = HORIZONTAL_ALIGNMENT_LEFT, float p_width = -1, int p_font_size = DEFAULT_FONT_SIZE, int p_size = 1, const Color &p_modulate = Color(1.0, 1.0, 1.0), BitField<TextServer::JustificationFlag> p_jst_flags = TextServer::JUSTIFICATION_KASHIDA | TextServer::JUSTIFICATION_WORD_BOUND, TextServer::Direction p_direction = TextServer::DIRECTION_AUTO, TextServer::Orientation p_orientation = TextServer::ORIENTATION_HORIZONTAL) const; virtual void draw_multiline_string_outline(RID p_canvas_item, const Point2 &p_pos, const String &p_text, HorizontalAlignment p_alignment = HORIZONTAL_ALIGNMENT_LEFT, float p_width = -1, int p_font_size = DEFAULT_FONT_SIZE, int p_max_lines = -1, int p_size = 1, const Color &p_modulate = Color(1.0, 1.0, 1.0), BitField<TextServer::LineBreakFlag> p_brk_flags = TextServer::BREAK_MANDATORY | TextServer::BREAK_WORD_BOUND, BitField<TextServer::JustificationFlag> p_jst_flags = TextServer::JUSTIFICATION_KASHIDA | TextServer::JUSTIFICATION_WORD_BOUND, TextServer::Direction p_direction = TextServer::DIRECTION_AUTO, TextServer::Orientation p_orientation = TextServer::ORIENTATION_HORIZONTAL) const; // Drawing char. virtual Size2 get_char_size(char32_t p_char, int p_font_size = DEFAULT_FONT_SIZE) const; virtual real_t draw_char(RID p_canvas_item, const Point2 &p_pos, char32_t p_char, int p_font_size = DEFAULT_FONT_SIZE, const Color &p_modulate = Color(1.0, 1.0, 1.0)) const; virtual real_t draw_char_outline(RID p_canvas_item, const Point2 &p_pos, char32_t p_char, int p_font_size = DEFAULT_FONT_SIZE, int p_size = 1, const Color &p_modulate = Color(1.0, 1.0, 1.0)) const; // Helper functions. virtual bool has_char(char32_t p_char) const; virtual String get_supported_chars() const; virtual bool is_language_supported(const String &p_language) const; virtual bool is_script_supported(const String &p_script) const; virtual Dictionary get_supported_feature_list() const; virtual Dictionary get_supported_variation_list() const; virtual int64_t get_face_count() const; Font(); ~Font(); }; /*************************************************************************/ /* FontFile */ /*************************************************************************/ class FontFile : public Font { GDCLASS(FontFile, Font); RES_BASE_EXTENSION("fontdata"); // Font source data. const uint8_t *data_ptr = nullptr; size_t data_size = 0; PackedByteArray data; TextServer::FontAntialiasing antialiasing = TextServer::FONT_ANTIALIASING_GRAY; bool mipmaps = false; bool msdf = false; int msdf_pixel_range = 16; int msdf_size = 48; int fixed_size = 0; bool force_autohinter = false; bool allow_system_fallback = true; TextServer::Hinting hinting = TextServer::HINTING_LIGHT; TextServer::SubpixelPositioning subpixel_positioning = TextServer::SUBPIXEL_POSITIONING_AUTO; real_t oversampling = 0.f; #ifndef DISABLE_DEPRECATED real_t bmp_height = 0.0; real_t bmp_ascent = 0.0; #endif // Cache. mutable Vector<RID> cache; _FORCE_INLINE_ void _clear_cache(); _FORCE_INLINE_ void _ensure_rid(int p_cache_index) const; void _convert_packed_8bit(Ref<Image> &p_source, int p_page, int p_sz); void _convert_packed_4bit(Ref<Image> &p_source, int p_page, int p_sz); void _convert_rgba_4bit(Ref<Image> &p_source, int p_page, int p_sz); void _convert_mono_8bit(Ref<Image> &p_source, int p_page, int p_ch, int p_sz, int p_ol); void _convert_mono_4bit(Ref<Image> &p_source, int p_page, int p_ch, int p_sz, int p_ol); protected: static void _bind_methods(); bool _set(const StringName &p_name, const Variant &p_value); bool _get(const StringName &p_name, Variant &r_ret) const; void _get_property_list(List<PropertyInfo> *p_list) const; virtual void reset_state() override; public: Error load_bitmap_font(const String &p_path); Error load_dynamic_font(const String &p_path); // Font source data. virtual void set_data_ptr(const uint8_t *p_data, size_t p_size); virtual void set_data(const PackedByteArray &p_data); virtual PackedByteArray get_data() const; // Common properties. virtual void set_font_name(const String &p_name); virtual void set_font_style_name(const String &p_name); virtual void set_font_style(BitField<TextServer::FontStyle> p_style); virtual void set_font_weight(int p_weight); virtual void set_font_stretch(int p_stretch); virtual void set_antialiasing(TextServer::FontAntialiasing p_antialiasing); virtual TextServer::FontAntialiasing get_antialiasing() const; virtual void set_generate_mipmaps(bool p_generate_mipmaps); virtual bool get_generate_mipmaps() const; virtual void set_multichannel_signed_distance_field(bool p_msdf); virtual bool is_multichannel_signed_distance_field() const; virtual void set_msdf_pixel_range(int p_msdf_pixel_range); virtual int get_msdf_pixel_range() const; virtual void set_msdf_size(int p_msdf_size); virtual int get_msdf_size() const; virtual void set_fixed_size(int p_fixed_size); virtual int get_fixed_size() const; virtual void set_allow_system_fallback(bool p_allow_system_fallback); virtual bool is_allow_system_fallback() const; virtual void set_force_autohinter(bool p_force_autohinter); virtual bool is_force_autohinter() const; virtual void set_hinting(TextServer::Hinting p_hinting); virtual TextServer::Hinting get_hinting() const; virtual void set_subpixel_positioning(TextServer::SubpixelPositioning p_subpixel); virtual TextServer::SubpixelPositioning get_subpixel_positioning() const; virtual void set_oversampling(real_t p_oversampling); virtual real_t get_oversampling() const; // Cache. virtual RID find_variation(const Dictionary &p_variation_coordinates, int p_face_index = 0, float p_strength = 0.0, Transform2D p_transform = Transform2D()) const override; virtual RID _get_rid() const override; virtual int get_cache_count() const; virtual void clear_cache(); virtual void remove_cache(int p_cache_index); virtual TypedArray<Vector2i> get_size_cache_list(int p_cache_index) const; virtual void clear_size_cache(int p_cache_index); virtual void remove_size_cache(int p_cache_index, const Vector2i &p_size); virtual void set_variation_coordinates(int p_cache_index, const Dictionary &p_variation_coordinates); virtual Dictionary get_variation_coordinates(int p_cache_index) const; virtual void set_embolden(int p_cache_index, float p_strength); virtual float get_embolden(int p_cache_index) const; virtual void set_transform(int p_cache_index, Transform2D p_transform); virtual Transform2D get_transform(int p_cache_index) const; virtual void set_face_index(int p_cache_index, int64_t p_index); virtual int64_t get_face_index(int p_cache_index) const; virtual void set_cache_ascent(int p_cache_index, int p_size, real_t p_ascent); virtual real_t get_cache_ascent(int p_cache_index, int p_size) const; virtual void set_cache_descent(int p_cache_index, int p_size, real_t p_descent); virtual real_t get_cache_descent(int p_cache_index, int p_size) const; virtual void set_cache_underline_position(int p_cache_index, int p_size, real_t p_underline_position); virtual real_t get_cache_underline_position(int p_cache_index, int p_size) const; virtual void set_cache_underline_thickness(int p_cache_index, int p_size, real_t p_underline_thickness); virtual real_t get_cache_underline_thickness(int p_cache_index, int p_size) const; virtual void set_cache_scale(int p_cache_index, int p_size, real_t p_scale); // Rendering scale for bitmap fonts (e.g. emoji fonts). virtual real_t get_cache_scale(int p_cache_index, int p_size) const; virtual int get_texture_count(int p_cache_index, const Vector2i &p_size) const; virtual void clear_textures(int p_cache_index, const Vector2i &p_size); virtual void remove_texture(int p_cache_index, const Vector2i &p_size, int p_texture_index); virtual void set_texture_image(int p_cache_index, const Vector2i &p_size, int p_texture_index, const Ref<Image> &p_image); virtual Ref<Image> get_texture_image(int p_cache_index, const Vector2i &p_size, int p_texture_index) const; virtual void set_texture_offsets(int p_cache_index, const Vector2i &p_size, int p_texture_index, const PackedInt32Array &p_offset); virtual PackedInt32Array get_texture_offsets(int p_cache_index, const Vector2i &p_size, int p_texture_index) const; virtual PackedInt32Array get_glyph_list(int p_cache_index, const Vector2i &p_size) const; virtual void clear_glyphs(int p_cache_index, const Vector2i &p_size); virtual void remove_glyph(int p_cache_index, const Vector2i &p_size, int32_t p_glyph); virtual void set_glyph_advance(int p_cache_index, int p_size, int32_t p_glyph, const Vector2 &p_advance); virtual Vector2 get_glyph_advance(int p_cache_index, int p_size, int32_t p_glyph) const; virtual void set_glyph_offset(int p_cache_index, const Vector2i &p_size, int32_t p_glyph, const Vector2 &p_offset); virtual Vector2 get_glyph_offset(int p_cache_index, const Vector2i &p_size, int32_t p_glyph) const; virtual void set_glyph_size(int p_cache_index, const Vector2i &p_size, int32_t p_glyph, const Vector2 &p_gl_size); virtual Vector2 get_glyph_size(int p_cache_index, const Vector2i &p_size, int32_t p_glyph) const; virtual void set_glyph_uv_rect(int p_cache_index, const Vector2i &p_size, int32_t p_glyph, const Rect2 &p_uv_rect); virtual Rect2 get_glyph_uv_rect(int p_cache_index, const Vector2i &p_size, int32_t p_glyph) const; virtual void set_glyph_texture_idx(int p_cache_index, const Vector2i &p_size, int32_t p_glyph, int p_texture_idx); virtual int get_glyph_texture_idx(int p_cache_index, const Vector2i &p_size, int32_t p_glyph) const; virtual TypedArray<Vector2i> get_kerning_list(int p_cache_index, int p_size) const; virtual void clear_kerning_map(int p_cache_index, int p_size); virtual void remove_kerning(int p_cache_index, int p_size, const Vector2i &p_glyph_pair); virtual void set_kerning(int p_cache_index, int p_size, const Vector2i &p_glyph_pair, const Vector2 &p_kerning); virtual Vector2 get_kerning(int p_cache_index, int p_size, const Vector2i &p_glyph_pair) const; virtual void render_range(int p_cache_index, const Vector2i &p_size, char32_t p_start, char32_t p_end); virtual void render_glyph(int p_cache_index, const Vector2i &p_size, int32_t p_index); // Language/script support override. virtual void set_language_support_override(const String &p_language, bool p_supported); virtual bool get_language_support_override(const String &p_language) const; virtual void remove_language_support_override(const String &p_language); virtual Vector<String> get_language_support_overrides() const; virtual void set_script_support_override(const String &p_script, bool p_supported); virtual bool get_script_support_override(const String &p_script) const; virtual void remove_script_support_override(const String &p_script); virtual Vector<String> get_script_support_overrides() const; virtual void set_opentype_feature_overrides(const Dictionary &p_overrides); virtual Dictionary get_opentype_feature_overrides() const; // Base font properties. virtual int32_t get_glyph_index(int p_size, char32_t p_char, char32_t p_variation_selector = 0x0000) const; FontFile(); ~FontFile(); }; /*************************************************************************/ /* FontVariation */ /*************************************************************************/ class FontVariation : public Font { GDCLASS(FontVariation, Font); struct Variation { Dictionary opentype; real_t embolden = 0.f; int face_index = 0; Transform2D transform; }; mutable Ref<Font> theme_font; Ref<Font> base_font; Variation variation; Dictionary opentype_features; int extra_spacing[TextServer::SPACING_MAX]; protected: static void _bind_methods(); virtual void _update_rids() const override; virtual void reset_state() override; public: virtual void set_base_font(const Ref<Font> &p_font); virtual Ref<Font> get_base_font() const; virtual Ref<Font> _get_base_font_or_default() const; virtual void set_variation_opentype(const Dictionary &p_coords); virtual Dictionary get_variation_opentype() const; virtual void set_variation_embolden(float p_strength); virtual float get_variation_embolden() const; virtual void set_variation_transform(Transform2D p_transform); virtual Transform2D get_variation_transform() const; virtual void set_variation_face_index(int p_face_index); virtual int get_variation_face_index() const; virtual void set_opentype_features(const Dictionary &p_features); virtual Dictionary get_opentype_features() const override; virtual void set_spacing(TextServer::SpacingType p_spacing, int p_value); virtual int get_spacing(TextServer::SpacingType p_spacing) const override; // Output. virtual RID find_variation(const Dictionary &p_variation_coordinates, int p_face_index = 0, float p_strength = 0.0, Transform2D p_transform = Transform2D()) const override; virtual RID _get_rid() const override; FontVariation(); ~FontVariation(); }; /*************************************************************************/ /* SystemFont */ /*************************************************************************/ class SystemFont : public Font { GDCLASS(SystemFont, Font); PackedStringArray names; bool italic = false; int weight = 400; int stretch = 100; mutable Ref<Font> theme_font; Ref<FontFile> base_font; Vector<int> face_indeces; int ftr_weight = 0; int ftr_stretch = 0; int ftr_italic = 0; TextServer::FontAntialiasing antialiasing = TextServer::FONT_ANTIALIASING_GRAY; bool mipmaps = false; bool force_autohinter = false; bool allow_system_fallback = true; TextServer::Hinting hinting = TextServer::HINTING_LIGHT; TextServer::SubpixelPositioning subpixel_positioning = TextServer::SUBPIXEL_POSITIONING_AUTO; real_t oversampling = 0.f; bool msdf = false; protected: static void _bind_methods(); virtual void _update_base_font(); virtual void _update_rids() const override; virtual void reset_state() override; public: virtual Ref<Font> _get_base_font_or_default() const; virtual void set_antialiasing(TextServer::FontAntialiasing p_antialiasing); virtual TextServer::FontAntialiasing get_antialiasing() const; virtual void set_generate_mipmaps(bool p_generate_mipmaps); virtual bool get_generate_mipmaps() const; virtual void set_allow_system_fallback(bool p_allow_system_fallback); virtual bool is_allow_system_fallback() const; virtual void set_force_autohinter(bool p_force_autohinter); virtual bool is_force_autohinter() const; virtual void set_hinting(TextServer::Hinting p_hinting); virtual TextServer::Hinting get_hinting() const; virtual void set_subpixel_positioning(TextServer::SubpixelPositioning p_subpixel); virtual TextServer::SubpixelPositioning get_subpixel_positioning() const; virtual void set_oversampling(real_t p_oversampling); virtual real_t get_oversampling() const; virtual void set_multichannel_signed_distance_field(bool p_msdf); virtual bool is_multichannel_signed_distance_field() const; virtual void set_font_names(const PackedStringArray &p_names); virtual PackedStringArray get_font_names() const; virtual void set_font_italic(bool p_italic); virtual bool get_font_italic() const; virtual void set_font_weight(int p_weight); virtual int get_font_weight() const override; virtual void set_font_stretch(int p_stretch); virtual int get_font_stretch() const override; virtual int get_spacing(TextServer::SpacingType p_spacing) const override; virtual RID find_variation(const Dictionary &p_variation_coordinates, int p_face_index = 0, float p_strength = 0.0, Transform2D p_transform = Transform2D()) const override; virtual RID _get_rid() const override; int64_t get_face_count() const override; SystemFont(); ~SystemFont(); }; #endif // FONT_H