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godot/modules/text_server_adv/text_server_adv.h

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/*************************************************************************/
/* text_server_adv.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 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_ADV_H
#define TEXT_SERVER_ADV_H
/*************************************************************************/
/* ICU/HarfBuzz/Graphite backed Text Server implementation with BiDi, */
/* shaping and advanced font features support. */
/*************************************************************************/
#include "servers/text_server.h"
#include "core/templates/rid_owner.h"
#include "scene/resources/texture.h"
#include "script_iterator.h"
#include <unicode/ubidi.h>
#include <unicode/ubrk.h>
#include <unicode/uchar.h>
#include <unicode/uclean.h>
#include <unicode/udata.h>
#include <unicode/uiter.h>
#include <unicode/uloc.h>
#include <unicode/uscript.h>
#include <unicode/ustring.h>
#include <unicode/utypes.h>
#include <hb-icu.h>
#include <hb.h>
#include "font_adv.h"
class TextServerAdvanced : public TextServer {
GDCLASS(TextServerAdvanced, TextServer);
_THREAD_SAFE_CLASS_
static String interface_name;
static uint32_t interface_features;
uint8_t *icu_data = nullptr;
struct ShapedTextDataAdvanced : public ShapedTextData {
/* Intermediate data */
Char16String utf16;
Vector<UBiDi *> bidi_iter;
Vector<Vector2i> bidi_override;
ScriptIterator *script_iter = nullptr;
hb_buffer_t *hb_buffer = nullptr;
~ShapedTextDataAdvanced() {
for (int i = 0; i < bidi_iter.size(); i++) {
ubidi_close(bidi_iter[i]);
}
if (script_iter) {
memdelete(script_iter);
}
if (hb_buffer) {
hb_buffer_destroy(hb_buffer);
}
}
};
float oversampling = 1.f;
mutable RID_PtrOwner<FontDataAdvanced> font_owner;
mutable RID_PtrOwner<ShapedTextDataAdvanced> shaped_owner;
int _convert_pos(const ShapedTextDataAdvanced *p_sd, int p_pos) const;
int _convert_pos_inv(const ShapedTextDataAdvanced *p_sd, int p_pos) const;
void _shape_run(ShapedTextDataAdvanced *p_sd, int32_t p_start, int32_t p_end, hb_script_t p_script, hb_direction_t p_direction, Vector<RID> p_fonts, int p_span, int p_fb_index);
TextServer::Glyph _shape_single_glyph(ShapedTextDataAdvanced *p_sd, char32_t p_char, hb_script_t p_script, hb_direction_t p_direction, RID p_font, int p_font_size);
protected:
static void _bind_methods(){};
void full_copy(ShapedTextDataAdvanced *p_shaped);
void invalidate(ShapedTextDataAdvanced *p_shaped);
public:
virtual bool has_feature(Feature p_feature) override;
virtual String get_name() const override;
virtual void free(RID p_rid) override;
virtual bool has(RID p_rid) override;
virtual bool load_support_data(const String &p_filename) override;
#ifdef TOOLS_ENABLED
virtual String get_support_data_filename() override { return _MKSTR(ICU_DATA_NAME); };
virtual String get_support_data_info() override { return String("ICU break iteration data (") + _MKSTR(ICU_DATA_NAME) + String(")."); };
virtual bool save_support_data(const String &p_filename) override;
#endif
virtual bool is_locale_right_to_left(const String &p_locale) override;
virtual int32_t name_to_tag(const String &p_name) override;
virtual String tag_to_name(int32_t p_tag) override;
/* Font interface */
virtual RID create_font_system(const String &p_name, int p_base_size = 16) override;
virtual RID create_font_resource(const String &p_filename, int p_base_size = 16) override;
virtual RID create_font_memory(const uint8_t *p_data, size_t p_size, const String &p_type, int p_base_size = 16) override;
virtual float font_get_height(RID p_font, int p_size) const override;
virtual float font_get_ascent(RID p_font, int p_size) const override;
virtual float font_get_descent(RID p_font, int p_size) const override;
virtual float font_get_underline_position(RID p_font, int p_size) const override;
virtual float font_get_underline_thickness(RID p_font, int p_size) const override;
virtual void font_set_antialiased(RID p_font, bool p_antialiased) override;
virtual bool font_get_antialiased(RID p_font) const override;
virtual Dictionary font_get_feature_list(RID p_font) const override;
virtual Dictionary font_get_variation_list(RID p_font) const override;
virtual void font_set_variation(RID p_font, const String &p_name, double p_value) override;
virtual double font_get_variation(RID p_font, const String &p_name) const override;
virtual void font_set_hinting(RID p_font, Hinting p_hinting) override;
virtual Hinting font_get_hinting(RID p_font) const override;
virtual void font_set_distance_field_hint(RID p_font, bool p_distance_field) override;
virtual bool font_get_distance_field_hint(RID p_font) const override;
virtual void font_set_force_autohinter(RID p_font, bool p_enabeld) override;
virtual bool font_get_force_autohinter(RID p_font) const override;
virtual bool font_has_char(RID p_font, char32_t p_char) const override;
virtual String font_get_supported_chars(RID p_font) const override;
virtual bool font_has_outline(RID p_font) const override;
virtual float font_get_base_size(RID p_font) const override;
virtual bool font_is_language_supported(RID p_font, const String &p_language) const override;
virtual void font_set_language_support_override(RID p_font, const String &p_language, bool p_supported) override;
virtual bool font_get_language_support_override(RID p_font, const String &p_language) override;
virtual void font_remove_language_support_override(RID p_font, const String &p_language) override;
Vector<String> font_get_language_support_overrides(RID p_font) override;
virtual bool font_is_script_supported(RID p_font, const String &p_script) const override;
virtual void font_set_script_support_override(RID p_font, const String &p_script, bool p_supported) override;
virtual bool font_get_script_support_override(RID p_font, const String &p_script) override;
virtual void font_remove_script_support_override(RID p_font, const String &p_script) override;
Vector<String> font_get_script_support_overrides(RID p_font) override;
virtual uint32_t font_get_glyph_index(RID p_font, char32_t p_char, char32_t p_variation_selector = 0x0000) const override;
virtual Vector2 font_get_glyph_advance(RID p_font, uint32_t p_index, int p_size) const override;
virtual Vector2 font_get_glyph_kerning(RID p_font, uint32_t p_index_a, uint32_t p_index_b, int p_size) const override;
virtual Vector2 font_draw_glyph(RID p_font, RID p_canvas, int p_size, const Vector2 &p_pos, uint32_t p_index, const Color &p_color = Color(1, 1, 1)) const override;
virtual Vector2 font_draw_glyph_outline(RID p_font, 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 override;
virtual float font_get_oversampling() const override;
virtual void font_set_oversampling(float p_oversampling) override;
virtual Vector<String> get_system_fonts() const 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(RID p_shaped) override;
virtual void shaped_text_set_direction(RID p_shaped, Direction p_direction = DIRECTION_AUTO) override;
virtual Direction shaped_text_get_direction(RID p_shaped) const override;
virtual void shaped_text_set_bidi_override(RID p_shaped, const Vector<Vector2i> &p_override) override;
virtual void shaped_text_set_orientation(RID p_shaped, Orientation p_orientation = ORIENTATION_HORIZONTAL) override;
virtual Orientation shaped_text_get_orientation(RID p_shaped) const override;
virtual void shaped_text_set_preserve_invalid(RID p_shaped, bool p_enabled) override;
virtual bool shaped_text_get_preserve_invalid(RID p_shaped) const override;
virtual void shaped_text_set_preserve_control(RID p_shaped, bool p_enabled) override;
virtual bool shaped_text_get_preserve_control(RID p_shaped) const override;
virtual bool shaped_text_add_string(RID p_shaped, const String &p_text, const Vector<RID> &p_fonts, int p_size, const Dictionary &p_opentype_features = Dictionary(), const String &p_language = "") override;
virtual bool shaped_text_add_object(RID p_shaped, Variant p_key, const Size2 &p_size, VAlign p_inline_align = VALIGN_CENTER, int p_length = 1) override;
virtual bool shaped_text_resize_object(RID p_shaped, Variant p_key, const Size2 &p_size, VAlign p_inline_align = VALIGN_CENTER) override;
virtual RID shaped_text_substr(RID p_shaped, int p_start, int p_length) const override;
virtual RID shaped_text_get_parent(RID p_shaped) const override;
virtual float shaped_text_fit_to_width(RID p_shaped, float p_width, uint8_t /*JustificationFlag*/ p_jst_flags = JUSTIFICATION_WORD_BOUND | JUSTIFICATION_KASHIDA) override;
virtual float shaped_text_tab_align(RID p_shaped, const Vector<float> &p_tab_stops) override;
virtual bool shaped_text_shape(RID p_shaped) override;
virtual bool shaped_text_update_breaks(RID p_shaped) override;
virtual bool shaped_text_update_justification_ops(RID p_shaped) override;
virtual bool shaped_text_is_ready(RID p_shaped) const override;
virtual Vector<Glyph> shaped_text_get_glyphs(RID p_shaped) const override;
virtual Vector2i shaped_text_get_range(RID p_shaped) const override;
virtual Vector<Glyph> shaped_text_sort_logical(RID p_shaped) override;
virtual Array shaped_text_get_objects(RID p_shaped) const override;
virtual Rect2 shaped_text_get_object_rect(RID p_shaped, Variant p_key) const override;
virtual Size2 shaped_text_get_size(RID p_shaped) const override;
virtual float shaped_text_get_ascent(RID p_shaped) const override;
virtual float shaped_text_get_descent(RID p_shaped) const override;
virtual float shaped_text_get_width(RID p_shaped) const override;
virtual float shaped_text_get_underline_position(RID p_shaped) const override;
virtual float shaped_text_get_underline_thickness(RID p_shaped) const override;
virtual String format_number(const String &p_string, const String &p_language = "") const override;
virtual String parse_number(const String &p_string, const String &p_language = "") const override;
virtual String percent_sign(const String &p_language = "") const override;
static TextServer *create_func(Error &r_error, void *p_user_data);
static void register_server();
TextServerAdvanced();
~TextServerAdvanced();
};
#endif // TEXT_SERVER_ADV_H
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