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godot/scene/resources/font.h

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/*************************************************************************/
/* font.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 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);
// Shaped string cache.
mutable LRUCache<uint64_t, Ref<TextLine>> cache;
mutable LRUCache<uint64_t, Ref<TextParagraph>> 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 uint32_t get_font_style() 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, uint16_t p_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, uint16_t p_flags = TextServer::BREAK_MANDATORY | TextServer::BREAK_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), uint16_t p_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), uint16_t p_flags = TextServer::BREAK_MANDATORY | TextServer::BREAK_WORD_BOUND | 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), uint16_t p_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), uint16_t p_flags = TextServer::BREAK_MANDATORY | TextServer::BREAK_WORD_BOUND | 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;
bool antialiased = true;
bool mipmaps = false;
bool msdf = false;
int msdf_pixel_range = 16;
int msdf_size = 48;
int fixed_size = 0;
bool force_autohinter = false;
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(uint32_t p_style);
virtual void set_antialiased(bool p_antialiased);
virtual bool is_antialiased() 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_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 Array 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 Array 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 Array 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();
};
#endif /* FONT_H */
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