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ecec415988
Add support for font weight and stretch selection when using system fonts. Add function to get system fallback font from a font name, style, text, and language code. Implement system font support for Android. Use system fonts as a last resort fallback.
480 lines
22 KiB
C++
480 lines
22 KiB
C++
/*************************************************************************/
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/* font.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef FONT_H
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#define FONT_H
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#include "core/io/resource.h"
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#include "core/templates/lru.h"
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#include "core/templates/rb_map.h"
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#include "scene/resources/texture.h"
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#include "servers/text_server.h"
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class TextLine;
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class TextParagraph;
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/*************************************************************************/
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/* Font */
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/*************************************************************************/
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class Font : public Resource {
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GDCLASS(Font, Resource);
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// Shaped string cache.
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mutable LRUCache<uint64_t, Ref<TextLine>> cache;
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mutable LRUCache<uint64_t, Ref<TextParagraph>> cache_wrap;
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protected:
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// Output.
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mutable TypedArray<RID> rids;
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mutable bool dirty_rids = true;
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// Fallbacks.
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static constexpr int MAX_FALLBACK_DEPTH = 64;
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TypedArray<Font> fallbacks;
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static void _bind_methods();
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virtual void _update_rids_fb(const Ref<Font> &p_f, int p_depth) const;
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virtual void _update_rids() const;
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virtual bool _is_cyclic(const Ref<Font> &p_f, int p_depth) const;
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virtual void reset_state() override;
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public:
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virtual void _invalidate_rids();
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static constexpr int DEFAULT_FONT_SIZE = 16;
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// Fallbacks.
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virtual void set_fallbacks(const TypedArray<Font> &p_fallbacks);
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virtual TypedArray<Font> get_fallbacks() const;
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// Output.
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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(); };
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virtual RID _get_rid() const { return RID(); };
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virtual TypedArray<RID> get_rids() const;
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// Font metrics.
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virtual real_t get_height(int p_font_size) const;
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virtual real_t get_ascent(int p_font_size) const;
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virtual real_t get_descent(int p_font_size) const;
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virtual real_t get_underline_position(int p_font_size) const;
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virtual real_t get_underline_thickness(int p_font_size) const;
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virtual String get_font_name() const;
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virtual String get_font_style_name() const;
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virtual BitField<TextServer::FontStyle> get_font_style() const;
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virtual int get_font_weight() const;
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virtual int get_font_stretch() const;
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virtual int get_spacing(TextServer::SpacingType p_spacing) const { return 0; };
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virtual Dictionary get_opentype_features() const;
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// Drawing string.
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virtual void set_cache_capacity(int p_single_line, int p_multi_line);
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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;
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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;
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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;
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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;
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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;
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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;
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// Drawing char.
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virtual Size2 get_char_size(char32_t p_char, int p_font_size = DEFAULT_FONT_SIZE) const;
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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;
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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;
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// Helper functions.
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virtual bool has_char(char32_t p_char) const;
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virtual String get_supported_chars() const;
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virtual bool is_language_supported(const String &p_language) const;
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virtual bool is_script_supported(const String &p_script) const;
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virtual Dictionary get_supported_feature_list() const;
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virtual Dictionary get_supported_variation_list() const;
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virtual int64_t get_face_count() const;
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Font();
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~Font();
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};
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/*************************************************************************/
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/* FontFile */
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/*************************************************************************/
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class FontFile : public Font {
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GDCLASS(FontFile, Font);
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RES_BASE_EXTENSION("fontdata");
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// Font source data.
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const uint8_t *data_ptr = nullptr;
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size_t data_size = 0;
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PackedByteArray data;
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TextServer::FontAntialiasing antialiasing = TextServer::FONT_ANTIALIASING_GRAY;
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bool mipmaps = false;
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bool msdf = false;
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int msdf_pixel_range = 16;
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int msdf_size = 48;
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int fixed_size = 0;
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bool force_autohinter = false;
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bool allow_system_fallback = true;
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TextServer::Hinting hinting = TextServer::HINTING_LIGHT;
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TextServer::SubpixelPositioning subpixel_positioning = TextServer::SUBPIXEL_POSITIONING_AUTO;
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real_t oversampling = 0.f;
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#ifndef DISABLE_DEPRECATED
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real_t bmp_height = 0.0;
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real_t bmp_ascent = 0.0;
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#endif
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// Cache.
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mutable Vector<RID> cache;
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_FORCE_INLINE_ void _clear_cache();
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_FORCE_INLINE_ void _ensure_rid(int p_cache_index) const;
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void _convert_packed_8bit(Ref<Image> &p_source, int p_page, int p_sz);
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void _convert_packed_4bit(Ref<Image> &p_source, int p_page, int p_sz);
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void _convert_rgba_4bit(Ref<Image> &p_source, int p_page, int p_sz);
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void _convert_mono_8bit(Ref<Image> &p_source, int p_page, int p_ch, int p_sz, int p_ol);
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void _convert_mono_4bit(Ref<Image> &p_source, int p_page, int p_ch, int p_sz, int p_ol);
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protected:
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static void _bind_methods();
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bool _set(const StringName &p_name, const Variant &p_value);
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bool _get(const StringName &p_name, Variant &r_ret) const;
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void _get_property_list(List<PropertyInfo> *p_list) const;
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virtual void reset_state() override;
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public:
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Error load_bitmap_font(const String &p_path);
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Error load_dynamic_font(const String &p_path);
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// Font source data.
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virtual void set_data_ptr(const uint8_t *p_data, size_t p_size);
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virtual void set_data(const PackedByteArray &p_data);
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virtual PackedByteArray get_data() const;
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// Common properties.
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virtual void set_font_name(const String &p_name);
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virtual void set_font_style_name(const String &p_name);
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virtual void set_font_style(BitField<TextServer::FontStyle> p_style);
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virtual void set_font_weight(int p_weight);
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virtual void set_font_stretch(int p_stretch);
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virtual void set_antialiasing(TextServer::FontAntialiasing p_antialiasing);
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virtual TextServer::FontAntialiasing get_antialiasing() const;
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virtual void set_generate_mipmaps(bool p_generate_mipmaps);
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virtual bool get_generate_mipmaps() const;
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virtual void set_multichannel_signed_distance_field(bool p_msdf);
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virtual bool is_multichannel_signed_distance_field() const;
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virtual void set_msdf_pixel_range(int p_msdf_pixel_range);
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virtual int get_msdf_pixel_range() const;
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virtual void set_msdf_size(int p_msdf_size);
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virtual int get_msdf_size() const;
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virtual void set_fixed_size(int p_fixed_size);
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virtual int get_fixed_size() const;
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virtual void set_allow_system_fallback(bool p_allow_system_fallback);
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virtual bool is_allow_system_fallback() const;
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virtual void set_force_autohinter(bool p_force_autohinter);
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virtual bool is_force_autohinter() const;
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virtual void set_hinting(TextServer::Hinting p_hinting);
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virtual TextServer::Hinting get_hinting() const;
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virtual void set_subpixel_positioning(TextServer::SubpixelPositioning p_subpixel);
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virtual TextServer::SubpixelPositioning get_subpixel_positioning() const;
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virtual void set_oversampling(real_t p_oversampling);
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virtual real_t get_oversampling() const;
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// Cache.
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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;
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virtual RID _get_rid() const override;
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virtual int get_cache_count() const;
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virtual void clear_cache();
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virtual void remove_cache(int p_cache_index);
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virtual TypedArray<Vector2i> get_size_cache_list(int p_cache_index) const;
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virtual void clear_size_cache(int p_cache_index);
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virtual void remove_size_cache(int p_cache_index, const Vector2i &p_size);
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virtual void set_variation_coordinates(int p_cache_index, const Dictionary &p_variation_coordinates);
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virtual Dictionary get_variation_coordinates(int p_cache_index) const;
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virtual void set_embolden(int p_cache_index, float p_strength);
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virtual float get_embolden(int p_cache_index) const;
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virtual void set_transform(int p_cache_index, Transform2D p_transform);
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virtual Transform2D get_transform(int p_cache_index) const;
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virtual void set_face_index(int p_cache_index, int64_t p_index);
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virtual int64_t get_face_index(int p_cache_index) const;
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virtual void set_cache_ascent(int p_cache_index, int p_size, real_t p_ascent);
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virtual real_t get_cache_ascent(int p_cache_index, int p_size) const;
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virtual void set_cache_descent(int p_cache_index, int p_size, real_t p_descent);
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virtual real_t get_cache_descent(int p_cache_index, int p_size) const;
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virtual void set_cache_underline_position(int p_cache_index, int p_size, real_t p_underline_position);
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virtual real_t get_cache_underline_position(int p_cache_index, int p_size) const;
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virtual void set_cache_underline_thickness(int p_cache_index, int p_size, real_t p_underline_thickness);
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virtual real_t get_cache_underline_thickness(int p_cache_index, int p_size) const;
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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).
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virtual real_t get_cache_scale(int p_cache_index, int p_size) const;
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virtual int get_texture_count(int p_cache_index, const Vector2i &p_size) const;
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virtual void clear_textures(int p_cache_index, const Vector2i &p_size);
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virtual void remove_texture(int p_cache_index, const Vector2i &p_size, int p_texture_index);
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virtual void set_texture_image(int p_cache_index, const Vector2i &p_size, int p_texture_index, const Ref<Image> &p_image);
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virtual Ref<Image> get_texture_image(int p_cache_index, const Vector2i &p_size, int p_texture_index) const;
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virtual void set_texture_offsets(int p_cache_index, const Vector2i &p_size, int p_texture_index, const PackedInt32Array &p_offset);
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virtual PackedInt32Array get_texture_offsets(int p_cache_index, const Vector2i &p_size, int p_texture_index) const;
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virtual PackedInt32Array get_glyph_list(int p_cache_index, const Vector2i &p_size) const;
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virtual void clear_glyphs(int p_cache_index, const Vector2i &p_size);
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virtual void remove_glyph(int p_cache_index, const Vector2i &p_size, int32_t p_glyph);
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virtual void set_glyph_advance(int p_cache_index, int p_size, int32_t p_glyph, const Vector2 &p_advance);
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virtual Vector2 get_glyph_advance(int p_cache_index, int p_size, int32_t p_glyph) const;
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virtual void set_glyph_offset(int p_cache_index, const Vector2i &p_size, int32_t p_glyph, const Vector2 &p_offset);
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virtual Vector2 get_glyph_offset(int p_cache_index, const Vector2i &p_size, int32_t p_glyph) const;
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virtual void set_glyph_size(int p_cache_index, const Vector2i &p_size, int32_t p_glyph, const Vector2 &p_gl_size);
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virtual Vector2 get_glyph_size(int p_cache_index, const Vector2i &p_size, int32_t p_glyph) const;
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virtual void set_glyph_uv_rect(int p_cache_index, const Vector2i &p_size, int32_t p_glyph, const Rect2 &p_uv_rect);
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virtual Rect2 get_glyph_uv_rect(int p_cache_index, const Vector2i &p_size, int32_t p_glyph) const;
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virtual void set_glyph_texture_idx(int p_cache_index, const Vector2i &p_size, int32_t p_glyph, int p_texture_idx);
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virtual int get_glyph_texture_idx(int p_cache_index, const Vector2i &p_size, int32_t p_glyph) const;
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virtual TypedArray<Vector2i> get_kerning_list(int p_cache_index, int p_size) const;
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virtual void clear_kerning_map(int p_cache_index, int p_size);
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virtual void remove_kerning(int p_cache_index, int p_size, const Vector2i &p_glyph_pair);
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virtual void set_kerning(int p_cache_index, int p_size, const Vector2i &p_glyph_pair, const Vector2 &p_kerning);
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virtual Vector2 get_kerning(int p_cache_index, int p_size, const Vector2i &p_glyph_pair) const;
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virtual void render_range(int p_cache_index, const Vector2i &p_size, char32_t p_start, char32_t p_end);
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virtual void render_glyph(int p_cache_index, const Vector2i &p_size, int32_t p_index);
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// Language/script support override.
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virtual void set_language_support_override(const String &p_language, bool p_supported);
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virtual bool get_language_support_override(const String &p_language) const;
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virtual void remove_language_support_override(const String &p_language);
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virtual Vector<String> get_language_support_overrides() const;
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virtual void set_script_support_override(const String &p_script, bool p_supported);
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virtual bool get_script_support_override(const String &p_script) const;
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virtual void remove_script_support_override(const String &p_script);
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virtual Vector<String> get_script_support_overrides() const;
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virtual void set_opentype_feature_overrides(const Dictionary &p_overrides);
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virtual Dictionary get_opentype_feature_overrides() const;
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// Base font properties.
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virtual int32_t get_glyph_index(int p_size, char32_t p_char, char32_t p_variation_selector = 0x0000) const;
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FontFile();
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~FontFile();
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};
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/*************************************************************************/
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/* FontVariation */
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/*************************************************************************/
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class FontVariation : public Font {
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GDCLASS(FontVariation, Font);
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struct Variation {
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Dictionary opentype;
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real_t embolden = 0.f;
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int face_index = 0;
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Transform2D transform;
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};
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mutable Ref<Font> theme_font;
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Ref<Font> base_font;
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Variation variation;
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Dictionary opentype_features;
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int extra_spacing[TextServer::SPACING_MAX];
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protected:
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static void _bind_methods();
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virtual void _update_rids() const override;
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virtual void reset_state() override;
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public:
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virtual void set_base_font(const Ref<Font> &p_font);
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virtual Ref<Font> get_base_font() const;
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virtual Ref<Font> _get_base_font_or_default() const;
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virtual void set_variation_opentype(const Dictionary &p_coords);
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virtual Dictionary get_variation_opentype() const;
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virtual void set_variation_embolden(float p_strength);
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virtual float get_variation_embolden() const;
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virtual void set_variation_transform(Transform2D p_transform);
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virtual Transform2D get_variation_transform() const;
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virtual void set_variation_face_index(int p_face_index);
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virtual int get_variation_face_index() const;
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virtual void set_opentype_features(const Dictionary &p_features);
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virtual Dictionary get_opentype_features() const override;
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virtual void set_spacing(TextServer::SpacingType p_spacing, int p_value);
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virtual int get_spacing(TextServer::SpacingType p_spacing) const override;
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// Output.
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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;
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virtual RID _get_rid() const override;
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FontVariation();
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~FontVariation();
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};
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/*************************************************************************/
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/* SystemFont */
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/*************************************************************************/
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class SystemFont : public Font {
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GDCLASS(SystemFont, Font);
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PackedStringArray names;
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bool italic = false;
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int weight = 400;
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int stretch = 100;
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mutable Ref<Font> theme_font;
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Ref<FontFile> base_font;
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Vector<int> face_indeces;
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int ftr_weight = 0;
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int ftr_stretch = 0;
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int ftr_italic = 0;
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TextServer::FontAntialiasing antialiasing = TextServer::FONT_ANTIALIASING_GRAY;
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bool mipmaps = false;
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bool force_autohinter = false;
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bool allow_system_fallback = true;
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TextServer::Hinting hinting = TextServer::HINTING_LIGHT;
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TextServer::SubpixelPositioning subpixel_positioning = TextServer::SUBPIXEL_POSITIONING_AUTO;
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real_t oversampling = 0.f;
|
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bool msdf = false;
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|
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protected:
|
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static void _bind_methods();
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|
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virtual void _update_base_font();
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virtual void _update_rids() const override;
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virtual void reset_state() override;
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|
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public:
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virtual Ref<Font> _get_base_font_or_default() const;
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|
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virtual void set_antialiasing(TextServer::FontAntialiasing p_antialiasing);
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virtual TextServer::FontAntialiasing get_antialiasing() const;
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|
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virtual void set_generate_mipmaps(bool p_generate_mipmaps);
|
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virtual bool get_generate_mipmaps() const;
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|
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virtual void set_allow_system_fallback(bool p_allow_system_fallback);
|
|
virtual bool is_allow_system_fallback() const;
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|
|
|
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
|