1031 lines
21 KiB
C++
1031 lines
21 KiB
C++
/* SPDX-FileCopyrightText: 2009 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup blf
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*
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* Main BlenFont (BLF) API, public functions for font handling.
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*
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* Wraps GPU display and FreeType.
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*/
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#include <cmath>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include FT_GLYPH_H
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#include "MEM_guardedalloc.h"
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#include "BLI_fileops.h"
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#include "BLI_math_rotation.h"
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#include "BLI_path_util.h"
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#include "BLI_string.h"
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#include "BLI_threads.h"
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#include "BLF_api.hh"
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#include "IMB_colormanagement.hh"
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#include "GPU_matrix.hh"
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#include "GPU_shader.hh"
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#include "blf_internal.hh"
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#include "blf_internal_types.hh"
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#define BLF_RESULT_CHECK_INIT(r_info) \
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if (r_info) { \
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memset(r_info, 0, sizeof(*(r_info))); \
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} \
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((void)0)
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FontBLF *global_font[BLF_MAX_FONT] = {nullptr};
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/* XXX: should these be made into global_font_'s too? */
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int blf_mono_font = -1;
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int blf_mono_font_render = -1;
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static FontBLF *blf_get(int fontid)
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{
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if (fontid >= 0 && fontid < BLF_MAX_FONT) {
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return global_font[fontid];
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}
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return nullptr;
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}
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int BLF_init()
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{
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for (int i = 0; i < BLF_MAX_FONT; i++) {
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global_font[i] = nullptr;
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}
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return blf_font_init();
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}
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void BLF_exit()
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{
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for (int i = 0; i < BLF_MAX_FONT; i++) {
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FontBLF *font = global_font[i];
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if (font) {
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blf_font_free(font);
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global_font[i] = nullptr;
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}
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}
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blf_font_exit();
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}
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void BLF_reset_fonts()
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{
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const int def_font = BLF_default();
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for (int i = 0; i < BLF_MAX_FONT; i++) {
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FontBLF *font = global_font[i];
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if (font && !ELEM(i, def_font, blf_mono_font, blf_mono_font_render) &&
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!(font->flags & BLF_DEFAULT))
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{
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/* Remove fonts that are not used in the UI or part of the stack. */
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blf_font_free(font);
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global_font[i] = nullptr;
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}
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}
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}
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void BLF_cache_clear()
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{
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for (int i = 0; i < BLF_MAX_FONT; i++) {
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FontBLF *font = global_font[i];
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if (font) {
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blf_glyph_cache_clear(font);
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}
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}
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}
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bool blf_font_id_is_valid(int fontid)
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{
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return blf_get(fontid) != nullptr;
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}
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static int blf_search_by_mem_name(const char *mem_name)
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{
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for (int i = 0; i < BLF_MAX_FONT; i++) {
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const FontBLF *font = global_font[i];
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if ((font == nullptr) || (font->mem_name == nullptr)) {
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continue;
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}
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if (STREQ(font->mem_name, mem_name)) {
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return i;
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}
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}
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return -1;
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}
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static int blf_search_by_filepath(const char *filepath)
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{
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for (int i = 0; i < BLF_MAX_FONT; i++) {
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const FontBLF *font = global_font[i];
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if ((font == nullptr) || (font->filepath == nullptr)) {
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continue;
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}
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if (BLI_path_cmp(font->filepath, filepath) == 0) {
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return i;
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}
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}
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return -1;
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}
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static int blf_search_available()
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{
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for (int i = 0; i < BLF_MAX_FONT; i++) {
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if (!global_font[i]) {
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return i;
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}
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}
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return -1;
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}
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bool BLF_has_glyph(int fontid, uint unicode)
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{
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FontBLF *font = blf_get(fontid);
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if (font) {
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return blf_get_char_index(font, unicode) != FT_Err_Ok;
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}
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return false;
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}
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bool BLF_is_loaded(const char *filepath)
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{
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return blf_search_by_filepath(filepath) >= 0;
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}
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bool BLF_is_loaded_mem(const char *name)
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{
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return blf_search_by_mem_name(name) >= 0;
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}
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int BLF_load(const char *filepath)
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{
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/* check if we already load this font. */
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int i = blf_search_by_filepath(filepath);
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if (i >= 0) {
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FontBLF *font = global_font[i];
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font->reference_count++;
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return i;
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}
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return BLF_load_unique(filepath);
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}
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int BLF_load_unique(const char *filepath)
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{
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/* Don't search in the cache!! make a new
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* object font, this is for keep fonts threads safe.
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*/
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int i = blf_search_available();
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if (i == -1) {
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printf("Too many fonts!!!\n");
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return -1;
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}
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/* This isn't essential, it will just cause confusing behavior to load a font
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* that appears to succeed, then doesn't show up. */
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if (!BLI_exists(filepath)) {
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printf("Can't find font: %s\n", filepath);
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return -1;
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}
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FontBLF *font = blf_font_new_from_filepath(filepath);
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if (!font) {
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printf("Can't load font: %s\n", filepath);
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return -1;
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}
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font->reference_count = 1;
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global_font[i] = font;
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return i;
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}
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void BLF_metrics_attach(int fontid, uchar *mem, int mem_size)
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{
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FontBLF *font = blf_get(fontid);
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if (font) {
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blf_font_attach_from_mem(font, mem, mem_size);
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}
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}
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int BLF_load_mem(const char *name, const uchar *mem, int mem_size)
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{
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int i = blf_search_by_mem_name(name);
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if (i >= 0) {
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// font = global_font[i]; /* UNUSED */
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return i;
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}
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return BLF_load_mem_unique(name, mem, mem_size);
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}
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int BLF_load_mem_unique(const char *name, const uchar *mem, int mem_size)
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{
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/*
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* Don't search in the cache, make a new object font!
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* this is to keep the font thread safe.
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*/
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int i = blf_search_available();
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if (i == -1) {
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printf("Too many fonts!!!\n");
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return -1;
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}
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if (!mem_size) {
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printf("Can't load font: %s from memory!!\n", name);
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return -1;
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}
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FontBLF *font = blf_font_new_from_mem(name, mem, mem_size);
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if (!font) {
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printf("Can't load font: %s from memory!!\n", name);
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return -1;
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}
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font->reference_count = 1;
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global_font[i] = font;
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return i;
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}
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void BLF_unload(const char *filepath)
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{
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for (int i = 0; i < BLF_MAX_FONT; i++) {
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FontBLF *font = global_font[i];
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if (font == nullptr || font->filepath == nullptr) {
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continue;
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}
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if (BLI_path_cmp(font->filepath, filepath) == 0) {
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BLI_assert(font->reference_count > 0);
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font->reference_count--;
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if (font->reference_count == 0) {
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blf_font_free(font);
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global_font[i] = nullptr;
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}
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}
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}
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}
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void BLF_unload_id(int fontid)
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{
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FontBLF *font = blf_get(fontid);
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if (font) {
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BLI_assert(font->reference_count > 0);
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font->reference_count--;
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if (font->reference_count == 0) {
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blf_font_free(font);
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global_font[fontid] = nullptr;
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}
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}
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}
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void BLF_unload_all()
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{
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for (int i = 0; i < BLF_MAX_FONT; i++) {
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FontBLF *font = global_font[i];
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if (font) {
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blf_font_free(font);
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global_font[i] = nullptr;
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}
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}
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blf_mono_font = -1;
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blf_mono_font_render = -1;
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BLF_default_set(-1);
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}
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void BLF_enable(int fontid, int option)
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{
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FontBLF *font = blf_get(fontid);
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if (font) {
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font->flags |= option;
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}
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}
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void BLF_disable(int fontid, int option)
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{
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FontBLF *font = blf_get(fontid);
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if (font) {
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font->flags &= ~option;
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}
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}
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void BLF_character_weight(int fontid, int weight)
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{
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FontBLF *font = blf_get(fontid);
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if (font) {
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font->char_weight = weight;
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}
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}
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void BLF_aspect(int fontid, float x, float y, float z)
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{
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FontBLF *font = blf_get(fontid);
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if (font) {
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font->aspect[0] = x;
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font->aspect[1] = y;
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font->aspect[2] = z;
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}
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}
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void BLF_matrix(int fontid, const float m[16])
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{
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FontBLF *font = blf_get(fontid);
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if (font) {
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memcpy(font->m, m, sizeof(font->m));
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}
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}
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void BLF_position(int fontid, float x, float y, float z)
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{
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FontBLF *font = blf_get(fontid);
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if (font) {
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float xa, ya, za;
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float remainder;
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if (font->flags & BLF_ASPECT) {
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xa = font->aspect[0];
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ya = font->aspect[1];
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za = font->aspect[2];
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}
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else {
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xa = 1.0f;
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ya = 1.0f;
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za = 1.0f;
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}
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remainder = x - floorf(x);
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if (remainder > 0.4f && remainder < 0.6f) {
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if (remainder < 0.5f) {
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x -= 0.1f * xa;
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}
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else {
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x += 0.1f * xa;
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}
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}
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remainder = y - floorf(y);
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if (remainder > 0.4f && remainder < 0.6f) {
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if (remainder < 0.5f) {
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y -= 0.1f * ya;
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}
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else {
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y += 0.1f * ya;
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}
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}
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remainder = z - floorf(z);
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if (remainder > 0.4f && remainder < 0.6f) {
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if (remainder < 0.5f) {
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z -= 0.1f * za;
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}
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else {
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z += 0.1f * za;
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}
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}
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font->pos[0] = round_fl_to_int(x);
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font->pos[1] = round_fl_to_int(y);
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font->pos[2] = round_fl_to_int(z);
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}
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}
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void BLF_size(int fontid, float size)
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{
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FontBLF *font = blf_get(fontid);
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if (font) {
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blf_font_size(font, size);
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}
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}
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#if BLF_BLUR_ENABLE
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void BLF_blur(int fontid, int size)
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{
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FontBLF *font = blf_get(fontid);
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if (font) {
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font->blur = size;
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}
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}
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#endif
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void BLF_color4ubv(int fontid, const uchar rgba[4])
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{
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FontBLF *font = blf_get(fontid);
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if (font) {
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font->color[0] = rgba[0];
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font->color[1] = rgba[1];
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font->color[2] = rgba[2];
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font->color[3] = rgba[3];
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}
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}
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void BLF_color3ubv_alpha(int fontid, const uchar rgb[3], uchar alpha)
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{
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FontBLF *font = blf_get(fontid);
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if (font) {
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font->color[0] = rgb[0];
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font->color[1] = rgb[1];
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font->color[2] = rgb[2];
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font->color[3] = alpha;
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}
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}
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void BLF_color3ubv(int fontid, const uchar rgb[3])
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{
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BLF_color3ubv_alpha(fontid, rgb, 255);
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}
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void BLF_color4ub(int fontid, uchar r, uchar g, uchar b, uchar alpha)
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{
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FontBLF *font = blf_get(fontid);
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if (font) {
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font->color[0] = r;
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font->color[1] = g;
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font->color[2] = b;
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font->color[3] = alpha;
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}
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}
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void BLF_color3ub(int fontid, uchar r, uchar g, uchar b)
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{
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FontBLF *font = blf_get(fontid);
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if (font) {
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font->color[0] = r;
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font->color[1] = g;
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font->color[2] = b;
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font->color[3] = 255;
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}
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}
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void BLF_color4fv(int fontid, const float rgba[4])
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{
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FontBLF *font = blf_get(fontid);
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if (font) {
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rgba_float_to_uchar(font->color, rgba);
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}
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}
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void BLF_color4f(int fontid, float r, float g, float b, float a)
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{
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const float rgba[4] = {r, g, b, a};
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BLF_color4fv(fontid, rgba);
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}
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void BLF_color3fv_alpha(int fontid, const float rgb[3], float alpha)
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{
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float rgba[4];
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copy_v3_v3(rgba, rgb);
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rgba[3] = alpha;
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BLF_color4fv(fontid, rgba);
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}
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void BLF_color3f(int fontid, float r, float g, float b)
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{
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const float rgba[4] = {r, g, b, 1.0f};
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BLF_color4fv(fontid, rgba);
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}
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void BLF_batch_draw_begin()
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{
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BLI_assert(g_batch.enabled == false);
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g_batch.enabled = true;
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}
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void BLF_batch_draw_flush()
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{
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if (g_batch.enabled) {
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blf_batch_draw();
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}
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}
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void BLF_batch_draw_end()
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{
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BLI_assert(g_batch.enabled == true);
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blf_batch_draw(); /* Draw remaining glyphs */
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g_batch.enabled = false;
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}
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static void blf_draw_gpu__start(const FontBLF *font)
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{
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/*
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* The pixmap alignment hack is handle
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* in BLF_position (old ui_rasterpos_safe).
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*/
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if ((font->flags & (BLF_ROTATION | BLF_MATRIX | BLF_ASPECT)) == 0) {
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return; /* glyphs will be translated individually and batched. */
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}
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GPU_matrix_push();
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if (font->flags & BLF_MATRIX) {
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GPU_matrix_mul(font->m);
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}
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GPU_matrix_translate_3f(font->pos[0], font->pos[1], font->pos[2]);
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if (font->flags & BLF_ASPECT) {
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GPU_matrix_scale_3fv(font->aspect);
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}
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if (font->flags & BLF_ROTATION) {
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GPU_matrix_rotate_2d(RAD2DEG(font->angle));
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}
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}
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static void blf_draw_gpu__end(const FontBLF *font)
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{
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if ((font->flags & (BLF_ROTATION | BLF_MATRIX | BLF_ASPECT)) != 0) {
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GPU_matrix_pop();
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}
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}
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void BLF_draw(int fontid, const char *str, const size_t str_len, ResultBLF *r_info)
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{
|
|
BLF_RESULT_CHECK_INIT(r_info);
|
|
|
|
if (str_len == 0 || str[0] == '\0') {
|
|
return;
|
|
}
|
|
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
|
|
/* Avoid bgl usage to corrupt BLF drawing. */
|
|
GPU_bgl_end();
|
|
|
|
blf_draw_gpu__start(font);
|
|
if (font->flags & BLF_WORD_WRAP) {
|
|
blf_font_draw__wrap(font, str, str_len, r_info);
|
|
}
|
|
else {
|
|
blf_font_draw(font, str, str_len, r_info);
|
|
}
|
|
blf_draw_gpu__end(font);
|
|
}
|
|
}
|
|
|
|
int BLF_draw_mono(int fontid, const char *str, const size_t str_len, int cwidth, int tab_columns)
|
|
{
|
|
if (str_len == 0 || str[0] == '\0') {
|
|
return 0;
|
|
}
|
|
|
|
FontBLF *font = blf_get(fontid);
|
|
int columns = 0;
|
|
|
|
if (font) {
|
|
blf_draw_gpu__start(font);
|
|
columns = blf_font_draw_mono(font, str, str_len, cwidth, tab_columns);
|
|
blf_draw_gpu__end(font);
|
|
}
|
|
|
|
return columns;
|
|
}
|
|
|
|
void BLF_boundbox_foreach_glyph(
|
|
int fontid, const char *str, size_t str_len, BLF_GlyphBoundsFn user_fn, void *user_data)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
if (font->flags & BLF_WORD_WRAP) {
|
|
/* TODO: word-wrap support. */
|
|
BLI_assert(0);
|
|
}
|
|
else {
|
|
blf_font_boundbox_foreach_glyph(font, str, str_len, user_fn, user_data);
|
|
}
|
|
}
|
|
}
|
|
|
|
size_t BLF_str_offset_from_cursor_position(int fontid,
|
|
const char *str,
|
|
size_t str_len,
|
|
int location_x)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
if (font) {
|
|
return blf_str_offset_from_cursor_position(font, str, str_len, location_x);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
bool BLF_str_offset_to_glyph_bounds(int fontid,
|
|
const char *str,
|
|
size_t str_offset,
|
|
rcti *glyph_bounds)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
if (font) {
|
|
blf_str_offset_to_glyph_bounds(font, str, str_offset, glyph_bounds);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
size_t BLF_width_to_strlen(
|
|
int fontid, const char *str, const size_t str_len, float width, float *r_width)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
const float xa = (font->flags & BLF_ASPECT) ? font->aspect[0] : 1.0f;
|
|
size_t ret;
|
|
int width_result;
|
|
ret = blf_font_width_to_strlen(font, str, str_len, width / xa, &width_result);
|
|
if (r_width) {
|
|
*r_width = float(width_result) * xa;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
if (r_width) {
|
|
*r_width = 0.0f;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
size_t BLF_width_to_rstrlen(
|
|
int fontid, const char *str, const size_t str_len, float width, float *r_width)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
const float xa = (font->flags & BLF_ASPECT) ? font->aspect[0] : 1.0f;
|
|
size_t ret;
|
|
int width_result;
|
|
ret = blf_font_width_to_rstrlen(font, str, str_len, width / xa, &width_result);
|
|
if (r_width) {
|
|
*r_width = float(width_result) * xa;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
if (r_width) {
|
|
*r_width = 0.0f;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void BLF_boundbox(
|
|
int fontid, const char *str, const size_t str_len, rcti *r_box, ResultBLF *r_info)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
BLF_RESULT_CHECK_INIT(r_info);
|
|
|
|
if (font) {
|
|
if (font->flags & BLF_WORD_WRAP) {
|
|
blf_font_boundbox__wrap(font, str, str_len, r_box, r_info);
|
|
}
|
|
else {
|
|
blf_font_boundbox(font, str, str_len, r_box, r_info);
|
|
}
|
|
}
|
|
}
|
|
|
|
void BLF_width_and_height(
|
|
int fontid, const char *str, const size_t str_len, float *r_width, float *r_height)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
blf_font_width_and_height(font, str, str_len, r_width, r_height, nullptr);
|
|
}
|
|
else {
|
|
*r_width = *r_height = 0.0f;
|
|
}
|
|
}
|
|
|
|
float BLF_width(int fontid, const char *str, const size_t str_len, ResultBLF *r_info)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
BLF_RESULT_CHECK_INIT(r_info);
|
|
|
|
if (font) {
|
|
return blf_font_width(font, str, str_len, r_info);
|
|
}
|
|
|
|
return 0.0f;
|
|
}
|
|
|
|
float BLF_fixed_width(int fontid)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
return blf_font_fixed_width(font);
|
|
}
|
|
|
|
return 0.0f;
|
|
}
|
|
|
|
float BLF_height(int fontid, const char *str, const size_t str_len, ResultBLF *r_info)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
BLF_RESULT_CHECK_INIT(r_info);
|
|
|
|
if (font) {
|
|
return blf_font_height(font, str, str_len, r_info);
|
|
}
|
|
|
|
return 0.0f;
|
|
}
|
|
|
|
int BLF_height_max(int fontid)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
return blf_font_height_max(font);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int BLF_width_max(int fontid)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
return blf_font_width_max(font);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int BLF_descender(int fontid)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
return blf_font_descender(font);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int BLF_ascender(int fontid)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
return blf_font_ascender(font);
|
|
}
|
|
|
|
return 0.0f;
|
|
}
|
|
|
|
void BLF_rotation(int fontid, float angle)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
font->angle = angle;
|
|
}
|
|
}
|
|
|
|
void BLF_clipping(int fontid, int xmin, int ymin, int xmax, int ymax)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
font->clip_rec.xmin = xmin;
|
|
font->clip_rec.ymin = ymin;
|
|
font->clip_rec.xmax = xmax;
|
|
font->clip_rec.ymax = ymax;
|
|
}
|
|
}
|
|
|
|
void BLF_wordwrap(int fontid, int wrap_width)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
font->wrap_width = wrap_width;
|
|
}
|
|
}
|
|
|
|
void BLF_shadow(int fontid, int level, const float rgba[4])
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
font->shadow = level;
|
|
rgba_float_to_uchar(font->shadow_color, rgba);
|
|
}
|
|
}
|
|
|
|
void BLF_shadow_offset(int fontid, int x, int y)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
font->shadow_x = x;
|
|
font->shadow_y = y;
|
|
}
|
|
}
|
|
|
|
void BLF_buffer(
|
|
int fontid, float *fbuf, uchar *cbuf, int w, int h, int nch, ColorManagedDisplay *display)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
font->buf_info.fbuf = fbuf;
|
|
font->buf_info.cbuf = cbuf;
|
|
font->buf_info.dims[0] = w;
|
|
font->buf_info.dims[1] = h;
|
|
font->buf_info.ch = nch;
|
|
font->buf_info.display = display;
|
|
}
|
|
}
|
|
|
|
void BLF_buffer_col(int fontid, const float rgba[4])
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
copy_v4_v4(font->buf_info.col_init, rgba);
|
|
}
|
|
}
|
|
|
|
void blf_draw_buffer__start(FontBLF *font)
|
|
{
|
|
FontBufInfoBLF *buf_info = &font->buf_info;
|
|
|
|
rgba_float_to_uchar(buf_info->col_char, buf_info->col_init);
|
|
|
|
if (buf_info->display) {
|
|
copy_v4_v4(buf_info->col_float, buf_info->col_init);
|
|
IMB_colormanagement_display_to_scene_linear_v3(buf_info->col_float, buf_info->display);
|
|
}
|
|
else {
|
|
srgb_to_linearrgb_v4(buf_info->col_float, buf_info->col_init);
|
|
}
|
|
}
|
|
void blf_draw_buffer__end() {}
|
|
|
|
void BLF_draw_buffer(int fontid, const char *str, const size_t str_len, ResultBLF *r_info)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font && (font->buf_info.fbuf || font->buf_info.cbuf)) {
|
|
blf_draw_buffer__start(font);
|
|
if (font->flags & BLF_WORD_WRAP) {
|
|
blf_font_draw_buffer__wrap(font, str, str_len, r_info);
|
|
}
|
|
else {
|
|
blf_font_draw_buffer(font, str, str_len, r_info);
|
|
}
|
|
blf_draw_buffer__end();
|
|
}
|
|
}
|
|
|
|
blender::Vector<blender::StringRef> BLF_string_wrap(int fontid,
|
|
blender::StringRef str,
|
|
const int max_pixel_width)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
if (!font) {
|
|
return {};
|
|
}
|
|
return blf_font_string_wrap(font, str, max_pixel_width);
|
|
}
|
|
|
|
char *BLF_display_name_from_file(const char *filepath)
|
|
{
|
|
/* While listing font directories this function can be called simultaneously from a greater
|
|
* number of threads than we want the FreeType cache to keep open at a time. Therefore open
|
|
* with a separate FT_Library object and use FreeType calls directly to avoid any contention. */
|
|
char *name = nullptr;
|
|
FT_Library ft_library;
|
|
if (FT_Init_FreeType(&ft_library) == FT_Err_Ok) {
|
|
FT_Face face;
|
|
if (FT_New_Face(ft_library, filepath, 0, &face) == FT_Err_Ok) {
|
|
if (face->family_name) {
|
|
name = BLI_sprintfN("%s %s", face->family_name, face->style_name);
|
|
}
|
|
FT_Done_Face(face);
|
|
}
|
|
FT_Done_FreeType(ft_library);
|
|
}
|
|
return name;
|
|
}
|
|
|
|
char *BLF_display_name_from_id(int fontid)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
if (!font) {
|
|
return nullptr;
|
|
}
|
|
|
|
return blf_display_name(font);
|
|
}
|
|
|
|
bool BLF_get_vfont_metrics(int fontid, float *ascend_ratio, float *em_ratio, float *scale)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
if (!font) {
|
|
return false;
|
|
}
|
|
|
|
if (!blf_ensure_face(font)) {
|
|
return false;
|
|
}
|
|
|
|
/* Copied without change from vfontdata_freetype.cc to ensure consistent sizing. */
|
|
|
|
/* Blender default BFont is not "complete". */
|
|
const bool complete_font = (font->face->ascender != 0) && (font->face->descender != 0) &&
|
|
(font->face->ascender != font->face->descender);
|
|
|
|
if (complete_font) {
|
|
/* We can get descender as well, but we simple store descender in relation to the ascender.
|
|
* Also note that descender is stored as a negative number. */
|
|
*ascend_ratio = float(font->face->ascender) / (font->face->ascender - font->face->descender);
|
|
}
|
|
else {
|
|
*ascend_ratio = 0.8f;
|
|
*em_ratio = 1.0f;
|
|
}
|
|
|
|
/* Adjust font size */
|
|
if (font->face->bbox.yMax != font->face->bbox.yMin) {
|
|
*scale = float(1.0 / double(font->face->bbox.yMax - font->face->bbox.yMin));
|
|
|
|
if (complete_font) {
|
|
*em_ratio = float(font->face->ascender - font->face->descender) /
|
|
(font->face->bbox.yMax - font->face->bbox.yMin);
|
|
}
|
|
}
|
|
else {
|
|
*scale = 1.0f / 1000.0f;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
float BLF_character_to_curves(int fontid, uint unicode, ListBase *nurbsbase, const float scale)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
if (!font) {
|
|
return 0.0f;
|
|
}
|
|
return blf_character_to_curves(font, unicode, nurbsbase, scale);
|
|
}
|
|
|
|
#ifndef NDEBUG
|
|
void BLF_state_print(int fontid)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
if (font) {
|
|
printf("fontid %d %p\n", fontid, (void *)font);
|
|
printf(" mem_name: '%s'\n", font->mem_name ? font->mem_name : "<none>");
|
|
printf(" filepath: '%s'\n", font->filepath ? font->filepath : "<none>");
|
|
printf(" size: %f\n", font->size);
|
|
printf(" pos: %d %d %d\n", UNPACK3(font->pos));
|
|
printf(" aspect: (%d) %.6f %.6f %.6f\n",
|
|
(font->flags & BLF_ROTATION) != 0,
|
|
UNPACK3(font->aspect));
|
|
printf(" angle: (%d) %.6f\n", (font->flags & BLF_ASPECT) != 0, font->angle);
|
|
printf(" flag: %d\n", font->flags);
|
|
}
|
|
else {
|
|
printf("fontid %d (nullptr)\n", fontid);
|
|
}
|
|
fflush(stdout);
|
|
}
|
|
#endif
|