99666de00f
Implement interface mirroring. Add TextLine and TextParagraph classes. Handle UTF-16 input on macOS and Windows.
206 lines
8.5 KiB
C++
206 lines
8.5 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) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 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/map.h"
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#include "scene/resources/texture.h"
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#include "servers/text_server.h"
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/*************************************************************************/
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class FontData : public Resource {
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GDCLASS(FontData, Resource);
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RID rid;
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int base_size = 16;
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String path;
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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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public:
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virtual RID get_rid() const override;
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void load_resource(const String &p_filename, int p_base_size = 16);
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void load_memory(const uint8_t *p_data, size_t p_size, const String &p_type, int p_base_size = 16);
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void _load_memory(const PackedByteArray &p_data, const String &p_type, int p_base_size = 16);
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void set_data_path(const String &p_path);
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String get_data_path() const;
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float get_height(int p_size) const;
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float get_ascent(int p_size) const;
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float get_descent(int p_size) const;
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Dictionary get_feature_list() const;
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float get_underline_position(int p_size) const;
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float get_underline_thickness(int p_size) const;
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void set_antialiased(bool p_antialiased);
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bool get_antialiased() const;
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void set_distance_field_hint(bool p_distance_field);
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bool get_distance_field_hint() const;
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void set_force_autohinter(bool p_enabeld);
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bool get_force_autohinter() const;
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void set_hinting(TextServer::Hinting p_hinting);
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TextServer::Hinting get_hinting() const;
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bool has_char(char32_t p_char) const;
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String get_supported_chars() const;
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Vector2 get_glyph_advance(uint32_t p_index, int p_size) const;
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Vector2 get_glyph_kerning(uint32_t p_index_a, uint32_t p_index_b, int p_size) const;
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bool has_outline() const;
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float get_base_size() const;
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bool is_language_supported(const String &p_language) const;
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void set_language_support_override(const String &p_language, bool p_supported);
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bool get_language_support_override(const String &p_language) const;
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void remove_language_support_override(const String &p_language);
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Vector<String> get_language_support_overrides() const;
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bool is_script_supported(const String &p_script) const;
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void set_script_support_override(const String &p_script, bool p_supported);
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bool get_script_support_override(const String &p_script) const;
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void remove_script_support_override(const String &p_script);
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Vector<String> get_script_support_overrides() const;
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uint32_t get_glyph_index(char32_t p_char, char32_t p_variation_selector = 0x0000) const;
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Vector2 draw_glyph(RID p_canvas, int p_size, const Vector2 &p_pos, uint32_t p_index, const Color &p_color = Color(1, 1, 1)) const;
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Vector2 draw_glyph_outline(RID p_canvas, int p_size, int p_outline_size, const Vector2 &p_pos, uint32_t p_index, const Color &p_color = Color(1, 1, 1)) const;
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FontData();
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FontData(const String &p_filename, int p_base_size);
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FontData(const PackedByteArray &p_data, const String &p_type, int p_base_size);
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~FontData();
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};
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/*************************************************************************/
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class TextLine;
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class TextParagraph;
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class Font : public Resource {
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GDCLASS(Font, Resource);
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public:
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enum SpacingType {
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SPACING_TOP,
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SPACING_BOTTOM
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};
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private:
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int spacing_top = 0;
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int spacing_bottom = 0;
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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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Vector<Ref<FontData>> data;
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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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void _data_changed();
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public:
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Dictionary get_feature_list() const;
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// Font data control.
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void add_data(const Ref<FontData> &p_data);
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void set_data(int p_idx, const Ref<FontData> &p_data);
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int get_data_count() const;
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Ref<FontData> get_data(int p_idx) const;
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void remove_data(int p_idx);
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float get_height(int p_size = -1) const;
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float get_ascent(int p_size = -1) const;
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float get_descent(int p_size = -1) const;
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float get_underline_position(int p_size = -1) const;
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float get_underline_thickness(int p_size = -1) const;
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int get_spacing(int p_type) const;
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void set_spacing(int p_type, int p_value);
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// Drawing string.
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Size2 get_string_size(const String &p_text, int p_size = -1) const;
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Size2 get_multiline_string_size(const String &p_text, float p_width = -1, int p_size = -1, uint8_t p_flags = TextServer::BREAK_MANDATORY | TextServer::BREAK_WORD_BOUND) const;
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void draw_string(RID p_canvas_item, const Point2 &p_pos, const String &p_text, HAlign p_align = HALIGN_LEFT, float p_width = -1, int p_size = -1, const Color &p_modulate = Color(1, 1, 1), int p_outline_size = 0, const Color &p_outline_modulate = Color(1, 1, 1, 0), uint8_t p_flags = TextServer::JUSTIFICATION_KASHIDA | TextServer::JUSTIFICATION_WORD_BOUND) const;
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void draw_multiline_string(RID p_canvas_item, const Point2 &p_pos, const String &p_text, HAlign p_align = HALIGN_LEFT, float p_width = -1, int p_max_lines = -1, int p_size = -1, const Color &p_modulate = Color(1, 1, 1), int p_outline_size = 0, const Color &p_outline_modulate = Color(1, 1, 1, 0), uint8_t p_flags = TextServer::BREAK_MANDATORY | TextServer::BREAK_WORD_BOUND | TextServer::JUSTIFICATION_KASHIDA | TextServer::JUSTIFICATION_WORD_BOUND) const;
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// Helper functions.
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bool has_char(char32_t p_char) const;
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String get_supported_chars() const;
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Size2 get_char_size(char32_t p_char, char32_t p_next = 0, int p_size = -1) const;
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float draw_char(RID p_canvas_item, const Point2 &p_pos, char32_t p_char, char32_t p_next = 0, int p_size = -1, const Color &p_modulate = Color(1, 1, 1), int p_outline_size = 0, const Color &p_outline_modulate = Color(1, 1, 1, 0)) const;
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Vector<RID> get_rids() const;
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void update_changes();
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Font();
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~Font();
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};
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VARIANT_ENUM_CAST(Font::SpacingType);
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/*************************************************************************/
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class ResourceFormatLoaderFont : public ResourceFormatLoader {
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public:
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virtual RES load(const String &p_path, const String &p_original_path = "", Error *r_error = nullptr, bool p_use_sub_threads = false, float *r_progress = nullptr, bool p_no_cache = false);
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virtual void get_recognized_extensions(List<String> *p_extensions) const;
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virtual bool handles_type(const String &p_type) const;
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virtual String get_resource_type(const String &p_path) const;
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};
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#endif
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