/*************************************************************************/ /* text_server_fb.h */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */ /* */ /* 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 TEXT_SERVER_FALLBACK_H #define TEXT_SERVER_FALLBACK_H /*************************************************************************/ /* Fallback Text Server provides simplified TS functionality, without */ /* BiDi, shaping and advanced font features support. */ /*************************************************************************/ #ifdef GDEXTENSION // Headers for building as GDExtension plug-in. #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace godot; #else // Headers for building as built-in module. #include "servers/text/text_server_extension.h" #include "core/templates/hash_map.h" #include "core/templates/rid_owner.h" #include "core/templates/thread_work_pool.h" #include "scene/resources/texture.h" #include "modules/modules_enabled.gen.h" // For freetype, msdfgen. #endif // Thirdparty headers. #ifdef MODULE_FREETYPE_ENABLED #include #include FT_FREETYPE_H #include FT_TRUETYPE_TABLES_H #include FT_STROKER_H #include FT_ADVANCES_H #include FT_MULTIPLE_MASTERS_H #include FT_BBOX_H #endif /*************************************************************************/ class TextServerFallback : public TextServerExtension { GDCLASS(TextServerFallback, TextServerExtension); _THREAD_SAFE_CLASS_ HashMap feature_sets; HashMap feature_sets_inv; void _insert_feature_sets(); _FORCE_INLINE_ void _insert_feature(const StringName &p_name, int32_t p_tag); // Font cache data. #ifdef MODULE_FREETYPE_ENABLED mutable FT_Library ft_library = nullptr; #endif const int rect_range = 1; struct FontTexture { Image::Format format; PackedByteArray imgdata; int texture_w = 0; int texture_h = 0; PackedInt32Array offsets; Ref texture; bool dirty = true; }; struct FontTexturePosition { int index = 0; int x = 0; int y = 0; }; struct FontGlyph { bool found = false; int texture_idx = -1; Rect2 rect; Rect2 uv_rect; Vector2 advance; }; struct FontForSizeFallback { double ascent = 0.0; double descent = 0.0; double underline_position = 0.0; double underline_thickness = 0.0; double scale = 1.0; double oversampling = 1.0; Vector2i size; Vector textures; HashMap glyph_map; HashMap kerning_map; #ifdef MODULE_FREETYPE_ENABLED FT_Face face = nullptr; FT_StreamRec stream; #endif ~FontForSizeFallback() { #ifdef MODULE_FREETYPE_ENABLED if (face != nullptr) { FT_Done_Face(face); } #endif } }; struct FontFallback { Mutex mutex; bool antialiased = true; bool mipmaps = false; bool msdf = false; int msdf_range = 14; int msdf_source_size = 48; int fixed_size = 0; bool force_autohinter = false; TextServer::Hinting hinting = TextServer::HINTING_LIGHT; TextServer::SubpixelPositioning subpixel_positioning = TextServer::SUBPIXEL_POSITIONING_AUTO; Dictionary variation_coordinates; double oversampling = 0.0; double embolden = 0.0; Transform2D transform; uint32_t style_flags = 0; String font_name; String style_name; HashMap cache; bool face_init = false; Dictionary supported_varaitions; Dictionary feature_overrides; // Language/script support override. HashMap language_support_overrides; HashMap script_support_overrides; PackedByteArray data; const uint8_t *data_ptr; size_t data_size; int face_index = 0; mutable ThreadWorkPool work_pool; ~FontFallback() { work_pool.finish(); for (const KeyValue &E : cache) { memdelete(E.value); } cache.clear(); } }; _FORCE_INLINE_ FontTexturePosition find_texture_pos_for_glyph(FontForSizeFallback *p_data, int p_color_size, Image::Format p_image_format, int p_width, int p_height, bool p_msdf) const; #ifdef MODULE_MSDFGEN_ENABLED _FORCE_INLINE_ FontGlyph rasterize_msdf(FontFallback *p_font_data, FontForSizeFallback *p_data, int p_pixel_range, int p_rect_margin, FT_Outline *outline, const Vector2 &advance) const; #endif #ifdef MODULE_FREETYPE_ENABLED _FORCE_INLINE_ FontGlyph rasterize_bitmap(FontForSizeFallback *p_data, int p_rect_margin, FT_Bitmap bitmap, int yofs, int xofs, const Vector2 &advance) const; #endif _FORCE_INLINE_ bool _ensure_glyph(FontFallback *p_font_data, const Vector2i &p_size, int32_t p_glyph) const; _FORCE_INLINE_ bool _ensure_cache_for_size(FontFallback *p_font_data, const Vector2i &p_size) const; _FORCE_INLINE_ void _font_clear_cache(FontFallback *p_font_data); void _generateMTSDF_threaded(uint32_t y, void *p_td) const; _FORCE_INLINE_ Vector2i _get_size(const FontFallback *p_font_data, int p_size) const { if (p_font_data->msdf) { return Vector2i(p_font_data->msdf_source_size, 0); } else if (p_font_data->fixed_size > 0) { return Vector2i(p_font_data->fixed_size, 0); } else { return Vector2i(p_size, 0); } } _FORCE_INLINE_ Vector2i _get_size_outline(const FontFallback *p_font_data, const Vector2i &p_size) const { if (p_font_data->msdf) { return Vector2i(p_font_data->msdf_source_size, 0); } else if (p_font_data->fixed_size > 0) { return Vector2i(p_font_data->fixed_size, MIN(p_size.y, 1)); } else { return p_size; } } // Shaped text cache data. struct TrimData { int trim_pos = -1; int ellipsis_pos = -1; Vector ellipsis_glyph_buf; }; struct ShapedTextDataFallback { Mutex mutex; /* Source data */ RID parent; // Substring parent ShapedTextData. int start = 0; // Substring start offset in the parent string. int end = 0; // Substring end offset in the parent string. String text; String custom_punct; TextServer::Direction direction = DIRECTION_LTR; // Desired text direction. TextServer::Orientation orientation = ORIENTATION_HORIZONTAL; struct Span { int start = -1; int end = -1; Array fonts; int font_size = 0; Variant embedded_key; String language; Dictionary features; Variant meta; }; Vector spans; struct EmbeddedObject { int pos = 0; InlineAlignment inline_align = INLINE_ALIGNMENT_CENTER; Rect2 rect; }; HashMap objects; /* Shaped data */ TextServer::Direction para_direction = DIRECTION_LTR; // Detected text direction. bool valid = false; // String is shaped. bool line_breaks_valid = false; // Line and word break flags are populated (and virtual zero width spaces inserted). bool justification_ops_valid = false; // Virtual elongation glyphs are added to the string. bool sort_valid = false; bool text_trimmed = false; bool preserve_invalid = true; // Draw hex code box instead of missing characters. bool preserve_control = false; // Draw control characters. double ascent = 0.0; // Ascent for horizontal layout, 1/2 of width for vertical. double descent = 0.0; // Descent for horizontal layout, 1/2 of width for vertical. double width = 0.0; // Width for horizontal layout, height for vertical. double width_trimmed = 0.0; int extra_spacing[4] = { 0, 0, 0, 0 }; double upos = 0.0; double uthk = 0.0; TrimData overrun_trim_data; bool fit_width_minimum_reached = false; Vector glyphs; Vector glyphs_logical; }; // Common data. double oversampling = 1.0; mutable RID_PtrOwner font_owner; mutable RID_PtrOwner shaped_owner; void _realign(ShapedTextDataFallback *p_sd) const; protected: static void _bind_methods(){}; void full_copy(ShapedTextDataFallback *p_shaped); void invalidate(ShapedTextDataFallback *p_shaped); public: virtual bool has_feature(Feature p_feature) const override; virtual String get_name() const override; virtual int64_t get_features() const override; virtual void free_rid(const RID &p_rid) override; virtual bool has(const RID &p_rid) override; virtual bool load_support_data(const String &p_filename) override; virtual String get_support_data_filename() const override { return ""; }; virtual String get_support_data_info() const override { return "Not supported"; }; virtual bool save_support_data(const String &p_filename) const override; virtual bool is_locale_right_to_left(const String &p_locale) const override; virtual int64_t name_to_tag(const String &p_name) const override; virtual String tag_to_name(int64_t p_tag) const override; /* Font interface */ virtual RID create_font() override; virtual void font_set_data(const RID &p_font_rid, const PackedByteArray &p_data) override; virtual void font_set_data_ptr(const RID &p_font_rid, const uint8_t *p_data_ptr, int64_t p_data_size) override; virtual void font_set_face_index(const RID &p_font_rid, int64_t p_index) override; virtual int64_t font_get_face_index(const RID &p_font_rid) const override; virtual int64_t font_get_face_count(const RID &p_font_rid) const override; virtual void font_set_style(const RID &p_font_rid, int64_t /*FontStyle*/ p_style) override; virtual int64_t /*FontStyle*/ font_get_style(const RID &p_font_rid) const override; virtual void font_set_style_name(const RID &p_font_rid, const String &p_name) override; virtual String font_get_style_name(const RID &p_font_rid) const override; virtual void font_set_name(const RID &p_font_rid, const String &p_name) override; virtual String font_get_name(const RID &p_font_rid) const override; virtual void font_set_antialiased(const RID &p_font_rid, bool p_antialiased) override; virtual bool font_is_antialiased(const RID &p_font_rid) const override; virtual void font_set_generate_mipmaps(const RID &p_font_rid, bool p_generate_mipmaps) override; virtual bool font_get_generate_mipmaps(const RID &p_font_rid) const override; virtual void font_set_multichannel_signed_distance_field(const RID &p_font_rid, bool p_msdf) override; virtual bool font_is_multichannel_signed_distance_field(const RID &p_font_rid) const override; virtual void font_set_msdf_pixel_range(const RID &p_font_rid, int64_t p_msdf_pixel_range) override; virtual int64_t font_get_msdf_pixel_range(const RID &p_font_rid) const override; virtual void font_set_msdf_size(const RID &p_font_rid, int64_t p_msdf_size) override; virtual int64_t font_get_msdf_size(const RID &p_font_rid) const override; virtual void font_set_fixed_size(const RID &p_font_rid, int64_t p_fixed_size) override; virtual int64_t font_get_fixed_size(const RID &p_font_rid) const override; virtual void font_set_force_autohinter(const RID &p_font_rid, bool p_force_autohinter) override; virtual bool font_is_force_autohinter(const RID &p_font_rid) const override; virtual void font_set_hinting(const RID &p_font_rid, TextServer::Hinting p_hinting) override; virtual TextServer::Hinting font_get_hinting(const RID &p_font_rid) const override; virtual void font_set_subpixel_positioning(const RID &p_font_rid, SubpixelPositioning p_subpixel) override; virtual SubpixelPositioning font_get_subpixel_positioning(const RID &p_font_rid) const override; virtual void font_set_embolden(const RID &p_font_rid, double p_strength) override; virtual double font_get_embolden(const RID &p_font_rid) const override; virtual void font_set_transform(const RID &p_font_rid, const Transform2D &p_transform) override; virtual Transform2D font_get_transform(const RID &p_font_rid) const override; virtual void font_set_variation_coordinates(const RID &p_font_rid, const Dictionary &p_variation_coordinates) override; virtual Dictionary font_get_variation_coordinates(const RID &p_font_rid) const override; virtual void font_set_oversampling(const RID &p_font_rid, double p_oversampling) override; virtual double font_get_oversampling(const RID &p_font_rid) const override; virtual Array font_get_size_cache_list(const RID &p_font_rid) const override; virtual void font_clear_size_cache(const RID &p_font_rid) override; virtual void font_remove_size_cache(const RID &p_font_rid, const Vector2i &p_size) override; virtual void font_set_ascent(const RID &p_font_rid, int64_t p_size, double p_ascent) override; virtual double font_get_ascent(const RID &p_font_rid, int64_t p_size) const override; virtual void font_set_descent(const RID &p_font_rid, int64_t p_size, double p_descent) override; virtual double font_get_descent(const RID &p_font_rid, int64_t p_size) const override; virtual void font_set_underline_position(const RID &p_font_rid, int64_t p_size, double p_underline_position) override; virtual double font_get_underline_position(const RID &p_font_rid, int64_t p_size) const override; virtual void font_set_underline_thickness(const RID &p_font_rid, int64_t p_size, double p_underline_thickness) override; virtual double font_get_underline_thickness(const RID &p_font_rid, int64_t p_size) const override; virtual void font_set_scale(const RID &p_font_rid, int64_t p_size, double p_scale) override; virtual double font_get_scale(const RID &p_font_rid, int64_t p_size) const override; virtual int64_t font_get_texture_count(const RID &p_font_rid, const Vector2i &p_size) const override; virtual void font_clear_textures(const RID &p_font_rid, const Vector2i &p_size) override; virtual void font_remove_texture(const RID &p_font_rid, const Vector2i &p_size, int64_t p_texture_index) override; virtual void font_set_texture_image(const RID &p_font_rid, const Vector2i &p_size, int64_t p_texture_index, const Ref &p_image) override; virtual Ref font_get_texture_image(const RID &p_font_rid, const Vector2i &p_size, int64_t p_texture_index) const override; virtual void font_set_texture_offsets(const RID &p_font_rid, const Vector2i &p_size, int64_t p_texture_index, const PackedInt32Array &p_offset) override; virtual PackedInt32Array font_get_texture_offsets(const RID &p_font_rid, const Vector2i &p_size, int64_t p_texture_index) const override; virtual Array font_get_glyph_list(const RID &p_font_rid, const Vector2i &p_size) const override; virtual void font_clear_glyphs(const RID &p_font_rid, const Vector2i &p_size) override; virtual void font_remove_glyph(const RID &p_font_rid, const Vector2i &p_size, int64_t p_glyph) override; virtual Vector2 font_get_glyph_advance(const RID &p_font_rid, int64_t p_size, int64_t p_glyph) const override; virtual void font_set_glyph_advance(const RID &p_font_rid, int64_t p_size, int64_t p_glyph, const Vector2 &p_advance) override; virtual Vector2 font_get_glyph_offset(const RID &p_font_rid, const Vector2i &p_size, int64_t p_glyph) const override; virtual void font_set_glyph_offset(const RID &p_font_rid, const Vector2i &p_size, int64_t p_glyph, const Vector2 &p_offset) override; virtual Vector2 font_get_glyph_size(const RID &p_font_rid, const Vector2i &p_size, int64_t p_glyph) const override; virtual void font_set_glyph_size(const RID &p_font_rid, const Vector2i &p_size, int64_t p_glyph, const Vector2 &p_gl_size) override; virtual Rect2 font_get_glyph_uv_rect(const RID &p_font_rid, const Vector2i &p_size, int64_t p_glyph) const override; virtual void font_set_glyph_uv_rect(const RID &p_font_rid, const Vector2i &p_size, int64_t p_glyph, const Rect2 &p_uv_rect) override; virtual int64_t font_get_glyph_texture_idx(const RID &p_font_rid, const Vector2i &p_size, int64_t p_glyph) const override; virtual void font_set_glyph_texture_idx(const RID &p_font_rid, const Vector2i &p_size, int64_t p_glyph, int64_t p_texture_idx) override; virtual RID font_get_glyph_texture_rid(const RID &p_font_rid, const Vector2i &p_size, int64_t p_glyph) const override; virtual Size2 font_get_glyph_texture_size(const RID &p_font_rid, const Vector2i &p_size, int64_t p_glyph) const override; virtual Dictionary font_get_glyph_contours(const RID &p_font, int64_t p_size, int64_t p_index) const override; virtual Array font_get_kerning_list(const RID &p_font_rid, int64_t p_size) const override; virtual void font_clear_kerning_map(const RID &p_font_rid, int64_t p_size) override; virtual void font_remove_kerning(const RID &p_font_rid, int64_t p_size, const Vector2i &p_glyph_pair) override; virtual void font_set_kerning(const RID &p_font_rid, int64_t p_size, const Vector2i &p_glyph_pair, const Vector2 &p_kerning) override; virtual Vector2 font_get_kerning(const RID &p_font_rid, int64_t p_size, const Vector2i &p_glyph_pair) const override; virtual int64_t font_get_glyph_index(const RID &p_font_rid, int64_t p_size, int64_t p_char, int64_t p_variation_selector = 0) const override; virtual bool font_has_char(const RID &p_font_rid, int64_t p_char) const override; virtual String font_get_supported_chars(const RID &p_font_rid) const override; virtual void font_render_range(const RID &p_font, const Vector2i &p_size, int64_t p_start, int64_t p_end) override; virtual void font_render_glyph(const RID &p_font_rid, const Vector2i &p_size, int64_t p_index) override; virtual void font_draw_glyph(const RID &p_font, const RID &p_canvas, int64_t p_size, const Vector2 &p_pos, int64_t p_index, const Color &p_color = Color(1, 1, 1)) const override; virtual void font_draw_glyph_outline(const RID &p_font, const RID &p_canvas, int64_t p_size, int64_t p_outline_size, const Vector2 &p_pos, int64_t p_index, const Color &p_color = Color(1, 1, 1)) const override; virtual bool font_is_language_supported(const RID &p_font_rid, const String &p_language) const override; virtual void font_set_language_support_override(const RID &p_font_rid, const String &p_language, bool p_supported) override; virtual bool font_get_language_support_override(const RID &p_font_rid, const String &p_language) override; virtual void font_remove_language_support_override(const RID &p_font_rid, const String &p_language) override; virtual PackedStringArray font_get_language_support_overrides(const RID &p_font_rid) override; virtual bool font_is_script_supported(const RID &p_font_rid, const String &p_script) const override; virtual void font_set_script_support_override(const RID &p_font_rid, const String &p_script, bool p_supported) override; virtual bool font_get_script_support_override(const RID &p_font_rid, const String &p_script) override; virtual void font_remove_script_support_override(const RID &p_font_rid, const String &p_script) override; virtual PackedStringArray font_get_script_support_overrides(const RID &p_font_rid) override; virtual void font_set_opentype_feature_overrides(const RID &p_font_rid, const Dictionary &p_overrides) override; virtual Dictionary font_get_opentype_feature_overrides(const RID &p_font_rid) const override; virtual Dictionary font_supported_feature_list(const RID &p_font_rid) const override; virtual Dictionary font_supported_variation_list(const RID &p_font_rid) const override; virtual double font_get_global_oversampling() const override; virtual void font_set_global_oversampling(double p_oversampling) override; /* Shaped text buffer interface */ virtual RID create_shaped_text(Direction p_direction = DIRECTION_AUTO, Orientation p_orientation = ORIENTATION_HORIZONTAL) override; virtual void shaped_text_clear(const RID &p_shaped) override; virtual void shaped_text_set_direction(const RID &p_shaped, Direction p_direction = DIRECTION_AUTO) override; virtual Direction shaped_text_get_direction(const RID &p_shaped) const override; virtual Direction shaped_text_get_inferred_direction(const RID &p_shaped) const override; virtual void shaped_text_set_bidi_override(const RID &p_shaped, const Array &p_override) override; virtual void shaped_text_set_custom_punctuation(const RID &p_shaped, const String &p_punct) override; virtual String shaped_text_get_custom_punctuation(const RID &p_shaped) const override; virtual void shaped_text_set_orientation(const RID &p_shaped, Orientation p_orientation = ORIENTATION_HORIZONTAL) override; virtual Orientation shaped_text_get_orientation(const RID &p_shaped) const override; virtual void shaped_text_set_preserve_invalid(const RID &p_shaped, bool p_enabled) override; virtual bool shaped_text_get_preserve_invalid(const RID &p_shaped) const override; virtual void shaped_text_set_preserve_control(const RID &p_shaped, bool p_enabled) override; virtual bool shaped_text_get_preserve_control(const RID &p_shaped) const override; virtual void shaped_text_set_spacing(const RID &p_shaped, SpacingType p_spacing, int64_t p_value) override; virtual int64_t shaped_text_get_spacing(const RID &p_shaped, SpacingType p_spacing) const override; virtual bool shaped_text_add_string(const RID &p_shaped, const String &p_text, const Array &p_fonts, int64_t p_size, const Dictionary &p_opentype_features = Dictionary(), const String &p_language = "", const Variant &p_meta = Variant()) override; virtual bool shaped_text_add_object(const RID &p_shaped, const Variant &p_key, const Size2 &p_size, InlineAlignment p_inline_align = INLINE_ALIGNMENT_CENTER, int64_t p_length = 1) override; virtual bool shaped_text_resize_object(const RID &p_shaped, const Variant &p_key, const Size2 &p_size, InlineAlignment p_inline_align = INLINE_ALIGNMENT_CENTER) override; virtual int64_t shaped_get_span_count(const RID &p_shaped) const override; virtual Variant shaped_get_span_meta(const RID &p_shaped, int64_t p_index) const override; virtual void shaped_set_span_update_font(const RID &p_shaped, int64_t p_index, const Array &p_fonts, int64_t p_size, const Dictionary &p_opentype_features = Dictionary()) override; virtual RID shaped_text_substr(const RID &p_shaped, int64_t p_start, int64_t p_length) const override; virtual RID shaped_text_get_parent(const RID &p_shaped) const override; virtual double shaped_text_fit_to_width(const RID &p_shaped, double p_width, int64_t /*JustificationFlag*/ p_jst_flags = JUSTIFICATION_WORD_BOUND | JUSTIFICATION_KASHIDA) override; virtual double shaped_text_tab_align(const RID &p_shaped, const PackedFloat32Array &p_tab_stops) override; virtual bool shaped_text_shape(const RID &p_shaped) override; virtual bool shaped_text_update_breaks(const RID &p_shaped) override; virtual bool shaped_text_update_justification_ops(const RID &p_shaped) override; virtual int64_t shaped_text_get_trim_pos(const RID &p_shaped) const override; virtual int64_t shaped_text_get_ellipsis_pos(const RID &p_shaped) const override; virtual const Glyph *shaped_text_get_ellipsis_glyphs(const RID &p_shaped) const override; virtual int64_t shaped_text_get_ellipsis_glyph_count(const RID &p_shaped) const override; virtual void shaped_text_overrun_trim_to_width(const RID &p_shaped, double p_width, int64_t p_trim_flags) override; virtual bool shaped_text_is_ready(const RID &p_shaped) const override; virtual const Glyph *shaped_text_get_glyphs(const RID &p_shaped) const override; virtual const Glyph *shaped_text_sort_logical(const RID &p_shaped) override; virtual int64_t shaped_text_get_glyph_count(const RID &p_shaped) const override; virtual Vector2i shaped_text_get_range(const RID &p_shaped) const override; virtual Array shaped_text_get_objects(const RID &p_shaped) const override; virtual Rect2 shaped_text_get_object_rect(const RID &p_shaped, const Variant &p_key) const override; virtual Size2 shaped_text_get_size(const RID &p_shaped) const override; virtual double shaped_text_get_ascent(const RID &p_shaped) const override; virtual double shaped_text_get_descent(const RID &p_shaped) const override; virtual double shaped_text_get_width(const RID &p_shaped) const override; virtual double shaped_text_get_underline_position(const RID &p_shaped) const override; virtual double shaped_text_get_underline_thickness(const RID &p_shaped) const override; virtual PackedInt32Array string_get_word_breaks(const String &p_string, const String &p_language = "") const override; virtual String string_to_upper(const String &p_string, const String &p_language = "") const override; virtual String string_to_lower(const String &p_string, const String &p_language = "") const override; TextServerFallback(); ~TextServerFallback(); }; #endif // TEXT_SERVER_FALLBACK_H