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godot/servers/text_server.h

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/*************************************************************************/
/* text_server.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_H
#define TEXT_SERVER_H
#include "core/object/ref_counted.h"
#include "core/os/os.h"
#include "core/templates/rid.h"
#include "core/variant/native_ptr.h"
#include "core/variant/variant.h"
struct Glyph;
struct CaretInfo;
class TextServer : public RefCounted {
GDCLASS(TextServer, RefCounted);
public:
enum Direction {
DIRECTION_AUTO,
DIRECTION_LTR,
DIRECTION_RTL
};
enum Orientation {
ORIENTATION_HORIZONTAL,
ORIENTATION_VERTICAL
};
enum JustificationFlag {
JUSTIFICATION_NONE = 0,
JUSTIFICATION_KASHIDA = 1 << 0,
JUSTIFICATION_WORD_BOUND = 1 << 1,
JUSTIFICATION_TRIM_EDGE_SPACES = 1 << 2,
JUSTIFICATION_AFTER_LAST_TAB = 1 << 3,
JUSTIFICATION_CONSTRAIN_ELLIPSIS = 1 << 4,
};
enum LineBreakFlag { // LineBreakFlag can be passed in the same value as the JustificationFlag, do not use the same values.
BREAK_NONE = 0,
BREAK_MANDATORY = 1 << 5,
BREAK_WORD_BOUND = 1 << 6,
BREAK_GRAPHEME_BOUND = 1 << 7,
BREAK_WORD_BOUND_ADAPTIVE = 1 << 6 | 1 << 8,
};
enum TextOverrunFlag {
OVERRUN_NO_TRIMMING = 0,
OVERRUN_TRIM = 1 << 0,
OVERRUN_TRIM_WORD_ONLY = 1 << 1,
OVERRUN_ADD_ELLIPSIS = 1 << 2,
OVERRUN_ENFORCE_ELLIPSIS = 1 << 3,
OVERRUN_JUSTIFICATION_AWARE = 1 << 4,
};
enum GraphemeFlag {
GRAPHEME_IS_VALID = 1 << 0, // Glyph is valid.
GRAPHEME_IS_RTL = 1 << 1, // Glyph is right-to-left.
GRAPHEME_IS_VIRTUAL = 1 << 2, // Glyph is not part of source string (added by fit_to_width function, do not affect caret movement).
GRAPHEME_IS_SPACE = 1 << 3, // Is whitespace (for justification and word breaks).
GRAPHEME_IS_BREAK_HARD = 1 << 4, // Is line break (mandatory break, e.g. "\n").
GRAPHEME_IS_BREAK_SOFT = 1 << 5, // Is line break (optional break, e.g. space).
GRAPHEME_IS_TAB = 1 << 6, // Is tab or vertical tab.
GRAPHEME_IS_ELONGATION = 1 << 7, // Elongation (e.g. kashida), glyph can be duplicated or truncated to fit line to width.
GRAPHEME_IS_PUNCTUATION = 1 << 8, // Punctuation, except underscore (can be used as word break, but not line break or justifiction).
GRAPHEME_IS_UNDERSCORE = 1 << 9, // Underscore (can be used as word break).
GRAPHEME_IS_CONNECTED = 1 << 10, // Connected to previous grapheme.
};
enum Hinting {
HINTING_NONE,
HINTING_LIGHT,
HINTING_NORMAL
};
enum SubpixelPositioning {
SUBPIXEL_POSITIONING_DISABLED,
SUBPIXEL_POSITIONING_AUTO,
SUBPIXEL_POSITIONING_ONE_HALF,
SUBPIXEL_POSITIONING_ONE_QUARTER,
};
const int SUBPIXEL_POSITIONING_ONE_HALF_MAX_SIZE = 20;
const int SUBPIXEL_POSITIONING_ONE_QUARTER_MAX_SIZE = 16;
enum Feature {
FEATURE_BIDI_LAYOUT = 1 << 0,
FEATURE_VERTICAL_LAYOUT = 1 << 1,
FEATURE_SHAPING = 1 << 2,
FEATURE_KASHIDA_JUSTIFICATION = 1 << 3,
FEATURE_BREAK_ITERATORS = 1 << 4,
FEATURE_FONT_SYSTEM = 1 << 5,
FEATURE_FONT_VARIABLE = 1 << 6,
FEATURE_CONTEXT_SENSITIVE_CASE_CONVERSION = 1 << 7,
FEATURE_USE_SUPPORT_DATA = 1 << 8,
};
enum ContourPointTag {
CONTOUR_CURVE_TAG_ON = 0x01,
CONTOUR_CURVE_TAG_OFF_CONIC = 0x00,
CONTOUR_CURVE_TAG_OFF_CUBIC = 0x02
};
enum SpacingType {
SPACING_GLYPH,
SPACING_SPACE,
SPACING_TOP,
SPACING_BOTTOM,
};
enum FontStyle {
FONT_BOLD = 1 << 0,
FONT_ITALIC = 1 << 1,
FONT_FIXED_WIDTH = 1 << 2,
};
void _draw_hex_code_box_number(RID p_canvas, int p_size, const Vector2 &p_pos, uint8_t p_index, const Color &p_color) const;
protected:
struct TrimData {
int trim_pos = -1;
int ellipsis_pos = -1;
Vector<Glyph> ellipsis_glyph_buf;
};
struct ShapedTextData {
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 EmbeddedObject {
int pos = 0;
InlineAlignment inline_align = INLINE_ALIGNMENT_CENTER;
Rect2 rect;
};
Map<Variant, EmbeddedObject> 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.
float ascent = 0.f; // Ascent for horizontal layout, 1/2 of width for vertical.
float descent = 0.f; // Descent for horizontal layout, 1/2 of width for vertical.
float width = 0.f; // Width for horizontal layout, height for vertical.
float width_trimmed = 0.f;
float upos = 0.f;
float uthk = 0.f;
TrimData overrun_trim_data;
bool fit_width_minimum_reached = false;
Vector<Glyph> glyphs;
Vector<Glyph> glyphs_logical;
};
Map<char32_t, char32_t> diacritics_map;
void _diacritics_map_add(const String &p_from, char32_t p_to);
void _init_diacritics_map();
static void _bind_methods();
public:
virtual bool has_feature(Feature p_feature) const = 0;
virtual String get_name() const = 0;
virtual uint32_t get_features() const = 0;
virtual void free(RID p_rid) = 0;
virtual bool has(RID p_rid) = 0;
virtual bool load_support_data(const String &p_filename) = 0;
virtual String get_support_data_filename() const = 0;
virtual String get_support_data_info() const = 0;
virtual bool save_support_data(const String &p_filename) const = 0;
virtual bool is_locale_right_to_left(const String &p_locale) const = 0;
virtual int32_t name_to_tag(const String &p_name) const { return 0; };
virtual String tag_to_name(int32_t p_tag) const { return ""; };
/* Font interface */
virtual RID create_font() = 0;
virtual void font_set_data(RID p_font_rid, const PackedByteArray &p_data) = 0;
virtual void font_set_data_ptr(RID p_font_rid, const uint8_t *p_data_ptr, size_t p_data_size) = 0;
virtual void font_set_style(RID p_font_rid, uint32_t /*FontStyle*/ p_style) = 0;
virtual uint32_t /*FontStyle*/ font_get_style(RID p_font_rid) const = 0;
virtual void font_set_name(RID p_font_rid, const String &p_name) = 0;
virtual String font_get_name(RID p_font_rid) const = 0;
virtual void font_set_style_name(RID p_font_rid, const String &p_name) = 0;
virtual String font_get_style_name(RID p_font_rid) const = 0;
virtual void font_set_antialiased(RID p_font_rid, bool p_antialiased) = 0;
virtual bool font_is_antialiased(RID p_font_rid) const = 0;
virtual void font_set_multichannel_signed_distance_field(RID p_font_rid, bool p_msdf) = 0;
virtual bool font_is_multichannel_signed_distance_field(RID p_font_rid) const = 0;
virtual void font_set_msdf_pixel_range(RID p_font_rid, int p_msdf_pixel_range) = 0;
virtual int font_get_msdf_pixel_range(RID p_font_rid) const = 0;
virtual void font_set_msdf_size(RID p_font_rid, int p_msdf_size) = 0;
virtual int font_get_msdf_size(RID p_font_rid) const = 0;
virtual void font_set_fixed_size(RID p_font_rid, int p_fixed_size) = 0;
virtual int font_get_fixed_size(RID p_font_rid) const = 0;
virtual void font_set_force_autohinter(RID p_font_rid, bool p_force_autohinter) = 0;
virtual bool font_is_force_autohinter(RID p_font_rid) const = 0;
virtual void font_set_hinting(RID p_font_rid, Hinting p_hinting) = 0;
virtual Hinting font_get_hinting(RID p_font_rid) const = 0;
virtual void font_set_subpixel_positioning(RID p_font_rid, SubpixelPositioning p_subpixel) = 0;
virtual SubpixelPositioning font_get_subpixel_positioning(RID p_font_rid) const = 0;
virtual void font_set_embolden(RID p_font_rid, float p_strength) = 0;
virtual float font_get_embolden(RID p_font_rid) const = 0;
virtual void font_set_transform(RID p_font_rid, Transform2D p_transform) = 0;
virtual Transform2D font_get_transform(RID p_font_rid) const = 0;
virtual void font_set_variation_coordinates(RID p_font_rid, const Dictionary &p_variation_coordinates) = 0;
virtual Dictionary font_get_variation_coordinates(RID p_font_rid) const = 0;
virtual void font_set_oversampling(RID p_font_rid, float p_oversampling) = 0;
virtual float font_get_oversampling(RID p_font_rid) const = 0;
virtual Array font_get_size_cache_list(RID p_font_rid) const = 0;
virtual void font_clear_size_cache(RID p_font_rid) = 0;
virtual void font_remove_size_cache(RID p_font_rid, const Vector2i &p_size) = 0;
virtual void font_set_ascent(RID p_font_rid, int p_size, float p_ascent) = 0;
virtual float font_get_ascent(RID p_font_rid, int p_size) const = 0;
virtual void font_set_descent(RID p_font_rid, int p_size, float p_descent) = 0;
virtual float font_get_descent(RID p_font_rid, int p_size) const = 0;
virtual void font_set_underline_position(RID p_font_rid, int p_size, float p_underline_position) = 0;
virtual float font_get_underline_position(RID p_font_rid, int p_size) const = 0;
virtual void font_set_underline_thickness(RID p_font_rid, int p_size, float p_underline_thickness) = 0;
virtual float font_get_underline_thickness(RID p_font_rid, int p_size) const = 0;
virtual void font_set_scale(RID p_font_rid, int p_size, float p_scale) = 0;
virtual float font_get_scale(RID p_font_rid, int p_size) const = 0;
virtual void font_set_spacing(RID p_font_rid, int p_size, SpacingType p_spacing, int p_value) = 0;
virtual int font_get_spacing(RID p_font_rid, int p_size, SpacingType p_spacing) const = 0;
virtual int font_get_texture_count(RID p_font_rid, const Vector2i &p_size) const = 0;
virtual void font_clear_textures(RID p_font_rid, const Vector2i &p_size) = 0;
virtual void font_remove_texture(RID p_font_rid, const Vector2i &p_size, int p_texture_index) = 0;
virtual void font_set_texture_image(RID p_font_rid, const Vector2i &p_size, int p_texture_index, const Ref<Image> &p_image) = 0;
virtual Ref<Image> font_get_texture_image(RID p_font_rid, const Vector2i &p_size, int p_texture_index) const = 0;
virtual void font_set_texture_offsets(RID p_font_rid, const Vector2i &p_size, int p_texture_index, const PackedInt32Array &p_offset) = 0;
virtual PackedInt32Array font_get_texture_offsets(RID p_font_rid, const Vector2i &p_size, int p_texture_index) const = 0;
virtual Array font_get_glyph_list(RID p_font_rid, const Vector2i &p_size) const = 0;
virtual void font_clear_glyphs(RID p_font_rid, const Vector2i &p_size) = 0;
virtual void font_remove_glyph(RID p_font_rid, const Vector2i &p_size, int32_t p_glyph) = 0;
virtual Vector2 font_get_glyph_advance(RID p_font_rid, int p_size, int32_t p_glyph) const = 0;
virtual void font_set_glyph_advance(RID p_font_rid, int p_size, int32_t p_glyph, const Vector2 &p_advance) = 0;
virtual Vector2 font_get_glyph_offset(RID p_font_rid, const Vector2i &p_size, int32_t p_glyph) const = 0;
virtual void font_set_glyph_offset(RID p_font_rid, const Vector2i &p_size, int32_t p_glyph, const Vector2 &p_offset) = 0;
virtual Vector2 font_get_glyph_size(RID p_font_rid, const Vector2i &p_size, int32_t p_glyph) const = 0;
virtual void font_set_glyph_size(RID p_font_rid, const Vector2i &p_size, int32_t p_glyph, const Vector2 &p_gl_size) = 0;
virtual Rect2 font_get_glyph_uv_rect(RID p_font_rid, const Vector2i &p_size, int32_t p_glyph) const = 0;
virtual void font_set_glyph_uv_rect(RID p_font_rid, const Vector2i &p_size, int32_t p_glyph, const Rect2 &p_uv_rect) = 0;
virtual int font_get_glyph_texture_idx(RID p_font_rid, const Vector2i &p_size, int32_t p_glyph) const = 0;
virtual void font_set_glyph_texture_idx(RID p_font_rid, const Vector2i &p_size, int32_t p_glyph, int p_texture_idx) = 0;
virtual Dictionary font_get_glyph_contours(RID p_font, int p_size, int32_t p_index) const = 0;
virtual Array font_get_kerning_list(RID p_font_rid, int p_size) const = 0;
virtual void font_clear_kerning_map(RID p_font_rid, int p_size) = 0;
virtual void font_remove_kerning(RID p_font_rid, int p_size, const Vector2i &p_glyph_pair) = 0;
virtual void font_set_kerning(RID p_font_rid, int p_size, const Vector2i &p_glyph_pair, const Vector2 &p_kerning) = 0;
virtual Vector2 font_get_kerning(RID p_font_rid, int p_size, const Vector2i &p_glyph_pair) const = 0;
virtual int32_t font_get_glyph_index(RID p_font_rid, int p_size, char32_t p_char, char32_t p_variation_selector) const = 0;
virtual bool font_has_char(RID p_font_rid, char32_t p_char) const = 0;
virtual String font_get_supported_chars(RID p_font_rid) const = 0;
virtual void font_render_range(RID p_font, const Vector2i &p_size, char32_t p_start, char32_t p_end) = 0;
virtual void font_render_glyph(RID p_font_rid, const Vector2i &p_size, int32_t p_index) = 0;
virtual void font_draw_glyph(RID p_font, RID p_canvas, int p_size, const Vector2 &p_pos, int32_t p_index, const Color &p_color = Color(1, 1, 1)) const = 0;
virtual void font_draw_glyph_outline(RID p_font, RID p_canvas, int p_size, int p_outline_size, const Vector2 &p_pos, int32_t p_index, const Color &p_color = Color(1, 1, 1)) const = 0;
virtual bool font_is_language_supported(RID p_font_rid, const String &p_language) const = 0;
virtual void font_set_language_support_override(RID p_font_rid, const String &p_language, bool p_supported) = 0;
virtual bool font_get_language_support_override(RID p_font_rid, const String &p_language) = 0;
virtual void font_remove_language_support_override(RID p_font_rid, const String &p_language) = 0;
virtual Vector<String> font_get_language_support_overrides(RID p_font_rid) = 0;
virtual bool font_is_script_supported(RID p_font_rid, const String &p_script) const = 0;
virtual void font_set_script_support_override(RID p_font_rid, const String &p_script, bool p_supported) = 0;
virtual bool font_get_script_support_override(RID p_font_rid, const String &p_script) = 0;
virtual void font_remove_script_support_override(RID p_font_rid, const String &p_script) = 0;
virtual Vector<String> font_get_script_support_overrides(RID p_font_rid) = 0;
virtual void font_set_opentype_feature_overrides(RID p_font_rid, const Dictionary &p_overrides) = 0;
virtual Dictionary font_get_opentype_feature_overrides(RID p_font_rid) const = 0;
virtual Dictionary font_supported_feature_list(RID p_font_rid) const = 0;
virtual Dictionary font_supported_variation_list(RID p_font_rid) const = 0;
virtual float font_get_global_oversampling() const = 0;
virtual void font_set_global_oversampling(float p_oversampling) = 0;
virtual Vector2 get_hex_code_box_size(int p_size, char32_t p_index) const;
virtual void draw_hex_code_box(RID p_canvas, int p_size, const Vector2 &p_pos, char32_t p_index, const Color &p_color) const;
/* Shaped text buffer interface */
virtual RID create_shaped_text(Direction p_direction = DIRECTION_AUTO, Orientation p_orientation = ORIENTATION_HORIZONTAL) = 0;
virtual void shaped_text_clear(RID p_shaped) = 0;
virtual void shaped_text_set_direction(RID p_shaped, Direction p_direction = DIRECTION_AUTO) = 0;
virtual Direction shaped_text_get_direction(RID p_shaped) const = 0;
virtual Direction shaped_text_get_inferred_direction(RID p_shaped) const = 0;
virtual void shaped_text_set_bidi_override(RID p_shaped, const Array &p_override) = 0;
virtual void shaped_text_set_custom_punctuation(RID p_shaped, const String &p_punct) = 0;
virtual String shaped_text_get_custom_punctuation(RID p_shaped) const = 0;
virtual void shaped_text_set_orientation(RID p_shaped, Orientation p_orientation = ORIENTATION_HORIZONTAL) = 0;
virtual Orientation shaped_text_get_orientation(RID p_shaped) const = 0;
virtual void shaped_text_set_preserve_invalid(RID p_shaped, bool p_enabled) = 0;
virtual bool shaped_text_get_preserve_invalid(RID p_shaped) const = 0;
virtual void shaped_text_set_preserve_control(RID p_shaped, bool p_enabled) = 0;
virtual bool shaped_text_get_preserve_control(RID p_shaped) const = 0;
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 = "", const Variant &p_meta = Variant()) = 0;
virtual bool shaped_text_add_object(RID p_shaped, Variant p_key, const Size2 &p_size, InlineAlignment p_inline_align = INLINE_ALIGNMENT_CENTER, int p_length = 1) = 0;
virtual bool shaped_text_resize_object(RID p_shaped, Variant p_key, const Size2 &p_size, InlineAlignment p_inline_align = INLINE_ALIGNMENT_CENTER) = 0;
virtual int shaped_get_span_count(RID p_shaped) const = 0;
virtual Variant shaped_get_span_meta(RID p_shaped, int p_index) const = 0;
virtual void shaped_set_span_update_font(RID p_shaped, int p_index, const Vector<RID> &p_fonts, int p_size, const Dictionary &p_opentype_features = Dictionary()) = 0;
virtual RID shaped_text_substr(RID p_shaped, int p_start, int p_length) const = 0; // Copy shaped substring (e.g. line break) without reshaping, but correctly reordered, preservers range.
virtual RID shaped_text_get_parent(RID p_shaped) const = 0;
virtual float shaped_text_fit_to_width(RID p_shaped, float p_width, uint16_t /*JustificationFlag*/ p_jst_flags = JUSTIFICATION_WORD_BOUND | JUSTIFICATION_KASHIDA) = 0;
virtual float shaped_text_tab_align(RID p_shaped, const PackedFloat32Array &p_tab_stops) = 0;
virtual bool shaped_text_shape(RID p_shaped) = 0;
virtual bool shaped_text_update_breaks(RID p_shaped) = 0;
virtual bool shaped_text_update_justification_ops(RID p_shaped) = 0;
virtual bool shaped_text_is_ready(RID p_shaped) const = 0;
virtual const Glyph *shaped_text_get_glyphs(RID p_shaped) const = 0;
Array _shaped_text_get_glyphs_wrapper(RID p_shaped) const;
virtual const Glyph *shaped_text_sort_logical(RID p_shaped) = 0;
Array _shaped_text_sort_logical_wrapper(RID p_shaped);
virtual int shaped_text_get_glyph_count(RID p_shaped) const = 0;
virtual Vector2i shaped_text_get_range(RID p_shaped) const = 0;
virtual PackedInt32Array shaped_text_get_line_breaks_adv(RID p_shaped, const PackedFloat32Array &p_width, int p_start = 0, bool p_once = true, uint16_t /*TextBreakFlag*/ p_break_flags = BREAK_MANDATORY | BREAK_WORD_BOUND) const;
virtual PackedInt32Array shaped_text_get_line_breaks(RID p_shaped, float p_width, int p_start = 0, uint16_t /*TextBreakFlag*/ p_break_flags = BREAK_MANDATORY | BREAK_WORD_BOUND) const;
virtual PackedInt32Array shaped_text_get_word_breaks(RID p_shaped, int p_grapheme_flags = GRAPHEME_IS_SPACE | GRAPHEME_IS_PUNCTUATION) const;
virtual int shaped_text_get_trim_pos(RID p_shaped) const = 0;
virtual int shaped_text_get_ellipsis_pos(RID p_shaped) const = 0;
virtual const Glyph *shaped_text_get_ellipsis_glyphs(RID p_shaped) const = 0;
Array _shaped_text_get_ellipsis_glyphs_wrapper(RID p_shaped) const;
virtual int shaped_text_get_ellipsis_glyph_count(RID p_shaped) const = 0;
virtual void shaped_text_overrun_trim_to_width(RID p_shaped, float p_width, uint16_t p_trim_flags) = 0;
virtual Array shaped_text_get_objects(RID p_shaped) const = 0;
virtual Rect2 shaped_text_get_object_rect(RID p_shaped, Variant p_key) const = 0;
virtual Size2 shaped_text_get_size(RID p_shaped) const = 0;
virtual float shaped_text_get_ascent(RID p_shaped) const = 0;
virtual float shaped_text_get_descent(RID p_shaped) const = 0;
virtual float shaped_text_get_width(RID p_shaped) const = 0;
virtual float shaped_text_get_underline_position(RID p_shaped) const = 0;
virtual float shaped_text_get_underline_thickness(RID p_shaped) const = 0;
virtual Direction shaped_text_get_dominant_direction_in_range(RID p_shaped, int p_start, int p_end) const;
virtual CaretInfo shaped_text_get_carets(RID p_shaped, int p_position) const;
Dictionary _shaped_text_get_carets_wrapper(RID p_shaped, int p_position) const;
virtual Vector<Vector2> shaped_text_get_selection(RID p_shaped, int p_start, int p_end) const;
virtual int shaped_text_hit_test_grapheme(RID p_shaped, float p_coords) const; // Return grapheme index.
virtual int shaped_text_hit_test_position(RID p_shaped, float p_coords) const; // Return caret/selection position.
virtual Vector2 shaped_text_get_grapheme_bounds(RID p_shaped, int p_pos) const;
virtual int shaped_text_next_grapheme_pos(RID p_shaped, int p_pos) const;
virtual int shaped_text_prev_grapheme_pos(RID p_shaped, int p_pos) const;
// The pen position is always placed on the baseline and moveing left to right.
virtual void shaped_text_draw(RID p_shaped, RID p_canvas, const Vector2 &p_pos, float p_clip_l = -1.f, float p_clip_r = -1.f, const Color &p_color = Color(1, 1, 1)) const;
virtual void shaped_text_draw_outline(RID p_shaped, RID p_canvas, const Vector2 &p_pos, float p_clip_l = -1.f, float p_clip_r = -1.f, int p_outline_size = 1, const Color &p_color = Color(1, 1, 1)) const;
// Number conversion.
virtual String format_number(const String &p_string, const String &p_language = "") const { return p_string; };
virtual String parse_number(const String &p_string, const String &p_language = "") const { return p_string; };
virtual String percent_sign(const String &p_language = "") const { return "%"; };
virtual String strip_diacritics(const String &p_string) const;
// Other string operations.
virtual String string_to_upper(const String &p_string, const String &p_language = "") const = 0;
virtual String string_to_lower(const String &p_string, const String &p_language = "") const = 0;
TextServer();
~TextServer();
};
/*************************************************************************/
struct Glyph {
int start = -1; // Start offset in the source string.
int end = -1; // End offset in the source string.
uint8_t count = 0; // Number of glyphs in the grapheme, set in the first glyph only.
uint8_t repeat = 1; // Draw multiple times in the row.
uint16_t flags = 0; // Grapheme flags (valid, rtl, virtual), set in the first glyph only.
float x_off = 0.f; // Offset from the origin of the glyph on baseline.
float y_off = 0.f;
float advance = 0.f; // Advance to the next glyph along baseline(x for horizontal layout, y for vertical).
RID font_rid; // Font resource.
int font_size = 0; // Font size;
int32_t index = 0; // Glyph index (font specific) or UTF-32 codepoint (for the invalid glyphs).
bool operator==(const Glyph &p_a) const;
bool operator!=(const Glyph &p_a) const;
bool operator<(const Glyph &p_a) const;
bool operator>(const Glyph &p_a) const;
};
struct CaretInfo {
Rect2 l_caret;
Rect2 t_caret;
TextServer::Direction l_dir;
TextServer::Direction t_dir;
};
struct GlyphCompare { // For line breaking reordering.
_FORCE_INLINE_ bool operator()(const Glyph &l, const Glyph &r) const {
if (l.start == r.start) {
if (l.count == r.count) {
if ((l.flags & TextServer::GRAPHEME_IS_VIRTUAL) == TextServer::GRAPHEME_IS_VIRTUAL) {
return false;
} else {
return true;
}
}
return l.count > r.count; // Sort first glyph with count & flags, order of the rest are irrelevant.
} else {
return l.start < r.start;
}
}
};
/*************************************************************************/
class TextServerManager : public Object {
GDCLASS(TextServerManager, Object);
protected:
static void _bind_methods();
private:
static TextServerManager *singleton;
Ref<TextServer> primary_interface;
Vector<Ref<TextServer>> interfaces;
public:
_FORCE_INLINE_ static TextServerManager *get_singleton() {
return singleton;
}
void add_interface(const Ref<TextServer> &p_interface);
void remove_interface(const Ref<TextServer> &p_interface);
int get_interface_count() const;
Ref<TextServer> get_interface(int p_index) const;
Ref<TextServer> find_interface(const String &p_name) const;
Array get_interfaces() const;
_FORCE_INLINE_ Ref<TextServer> get_primary_interface() const {
return primary_interface;
}
void set_primary_interface(const Ref<TextServer> &p_primary_interface);
TextServerManager();
~TextServerManager();
};
/*************************************************************************/
#define TS TextServerManager::get_singleton()->get_primary_interface()
VARIANT_ENUM_CAST(TextServer::Direction);
VARIANT_ENUM_CAST(TextServer::Orientation);
VARIANT_ENUM_CAST(TextServer::JustificationFlag);
VARIANT_ENUM_CAST(TextServer::LineBreakFlag);
VARIANT_ENUM_CAST(TextServer::TextOverrunFlag);
VARIANT_ENUM_CAST(TextServer::GraphemeFlag);
VARIANT_ENUM_CAST(TextServer::Hinting);
VARIANT_ENUM_CAST(TextServer::SubpixelPositioning);
VARIANT_ENUM_CAST(TextServer::Feature);
VARIANT_ENUM_CAST(TextServer::ContourPointTag);
VARIANT_ENUM_CAST(TextServer::SpacingType);
VARIANT_ENUM_CAST(TextServer::FontStyle);
GDVIRTUAL_NATIVE_PTR(Glyph);
GDVIRTUAL_NATIVE_PTR(CaretInfo);
#endif // TEXT_SERVER_H
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