189 lines
6.7 KiB
C++
189 lines
6.7 KiB
C++
/*************************************************************************/
|
|
/* dynamic_font_adv.h */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2021 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 DYNAMIC_FONT_ADV_H
|
|
#define DYNAMIC_FONT_ADV_H
|
|
|
|
#include "font_adv.h"
|
|
|
|
#include <ft2build.h>
|
|
#include FT_FREETYPE_H
|
|
#include FT_TRUETYPE_TABLES_H
|
|
|
|
#include <hb-ft.h>
|
|
#include <hb-ot.h>
|
|
|
|
struct DynamicFontDataAdvanced : public FontDataAdvanced {
|
|
_THREAD_SAFE_CLASS_
|
|
|
|
private:
|
|
struct CharTexture {
|
|
Vector<uint8_t> imgdata;
|
|
int texture_size = 0;
|
|
Vector<int> offsets;
|
|
Ref<ImageTexture> texture;
|
|
};
|
|
|
|
struct Character {
|
|
bool found = false;
|
|
int texture_idx = 0;
|
|
Rect2 rect;
|
|
Rect2 rect_uv;
|
|
Vector2 align;
|
|
Vector2 advance = Vector2(-1, -1);
|
|
|
|
static Character not_found();
|
|
};
|
|
|
|
struct TexturePosition {
|
|
int index = 0;
|
|
int x = 0;
|
|
int y = 0;
|
|
};
|
|
|
|
struct CacheID {
|
|
union {
|
|
struct {
|
|
uint32_t size : 16;
|
|
uint32_t outline_size : 16;
|
|
};
|
|
uint32_t key = 0;
|
|
};
|
|
bool operator<(CacheID right) const {
|
|
return key < right.key;
|
|
}
|
|
};
|
|
|
|
struct DataAtSize {
|
|
FT_Face face = nullptr;
|
|
TT_OS2 *os2 = nullptr;
|
|
FT_StreamRec stream;
|
|
|
|
int size = 0;
|
|
float scale_color_font = 1.f;
|
|
float ascent = 0.0;
|
|
float descent = 0.0;
|
|
float underline_position = 0.0;
|
|
float underline_thickness = 0.0;
|
|
|
|
Vector<CharTexture> textures;
|
|
HashMap<uint32_t, Character> glyph_map;
|
|
|
|
hb_font_t *hb_handle = nullptr;
|
|
~DataAtSize() {
|
|
if (hb_handle != nullptr) {
|
|
hb_font_destroy(hb_handle);
|
|
}
|
|
if (face != nullptr) {
|
|
FT_Done_Face(face);
|
|
}
|
|
}
|
|
};
|
|
|
|
FT_Library library = nullptr;
|
|
|
|
// Source data.
|
|
const uint8_t *font_mem = nullptr;
|
|
int font_mem_size = 0;
|
|
String font_path;
|
|
Vector<uint8_t> font_mem_cache;
|
|
|
|
Map<int32_t, double> variations;
|
|
|
|
float rect_margin = 1.f;
|
|
int base_size = 16;
|
|
float oversampling = 1.f;
|
|
bool antialiased = true;
|
|
bool force_autohinter = false;
|
|
TextServer::Hinting hinting = TextServer::HINTING_LIGHT;
|
|
|
|
Map<CacheID, DataAtSize *> size_cache;
|
|
Map<CacheID, DataAtSize *> size_cache_outline;
|
|
|
|
DataAtSize *get_data_for_size(int p_size, int p_outline_size = 0);
|
|
|
|
TexturePosition find_texture_pos_for_glyph(DataAtSize *p_data, int p_color_size, Image::Format p_image_format, int p_width, int p_height);
|
|
Character bitmap_to_character(DataAtSize *p_data, FT_Bitmap bitmap, int yofs, int xofs, const Vector2 &advance);
|
|
_FORCE_INLINE_ void update_glyph(int p_size, uint32_t p_index);
|
|
_FORCE_INLINE_ void update_glyph_outline(int p_size, int p_outline_size, uint32_t p_index);
|
|
|
|
public:
|
|
virtual void clear_cache() override;
|
|
|
|
virtual Error load_from_file(const String &p_filename, int p_base_size) override;
|
|
virtual Error load_from_memory(const uint8_t *p_data, size_t p_size, int p_base_size) override;
|
|
|
|
virtual float get_height(int p_size) const override;
|
|
virtual float get_ascent(int p_size) const override;
|
|
virtual float get_descent(int p_size) const override;
|
|
|
|
virtual Dictionary get_feature_list() const override;
|
|
virtual Dictionary get_variation_list() const override;
|
|
|
|
virtual void set_variation(const String &p_name, double p_value) override;
|
|
virtual double get_variation(const String &p_name) const override;
|
|
|
|
virtual float get_underline_position(int p_size) const override;
|
|
virtual float get_underline_thickness(int p_size) const override;
|
|
|
|
virtual void set_antialiased(bool p_antialiased) override;
|
|
virtual bool get_antialiased() const override;
|
|
|
|
virtual void set_hinting(TextServer::Hinting p_hinting) override;
|
|
virtual TextServer::Hinting get_hinting() const override;
|
|
|
|
virtual void set_force_autohinter(bool p_enabled) override;
|
|
virtual bool get_force_autohinter() const override;
|
|
|
|
virtual void set_distance_field_hint(bool p_distance_field) override{};
|
|
virtual bool get_distance_field_hint() const override { return false; };
|
|
|
|
virtual bool has_outline() const override;
|
|
virtual float get_base_size() const override;
|
|
|
|
virtual bool is_script_supported(uint32_t p_script) const override;
|
|
|
|
virtual bool has_char(char32_t p_char) const override;
|
|
virtual String get_supported_chars() const override;
|
|
virtual float get_font_scale(int p_size) const override;
|
|
|
|
virtual hb_font_t *get_hb_handle(int p_size) override;
|
|
virtual uint32_t get_glyph_index(char32_t p_char, char32_t p_variation_selector) const override;
|
|
virtual Vector2 get_advance(uint32_t p_index, int p_size) const override;
|
|
virtual Vector2 get_kerning(uint32_t p_char, uint32_t p_next, int p_size) const override;
|
|
|
|
virtual Vector2 draw_glyph(RID p_canvas, int p_size, const Vector2 &p_pos, uint32_t p_index, const Color &p_color) const override;
|
|
virtual 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) const override;
|
|
|
|
virtual ~DynamicFontDataAdvanced() override;
|
|
};
|
|
|
|
#endif // DYNAMIC_FONT_ADV_H
|