Bastien Montagne
fca515838e
Makes usage of those funcs much more clear, we even had mixed '!strcmp(foo, bar)' and 'strcmp(foo, bar) == 0' in several places...
870 lines
17 KiB
C
870 lines
17 KiB
C
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2009 Blender Foundation.
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* All rights reserved.
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*
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*
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* Contributor(s): Blender Foundation
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file blender/blenfont/intern/blf.c
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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 OpenGL and FreeType.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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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 "DNA_listBase.h"
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#include "DNA_vec_types.h"
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#include "BLI_math.h"
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#include "BLI_threads.h"
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#include "BIF_gl.h"
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#include "BLF_api.h"
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#include "blf_internal_types.h"
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#include "blf_internal.h"
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/* Max number of font in memory.
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* Take care that now every font have a glyph cache per size/dpi,
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* so we don't need load the same font with different size, just
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* load one and call BLF_size.
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*/
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#define BLF_MAX_FONT 16
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/* call BLF_default_set first! */
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#define ASSERT_DEFAULT_SET BLI_assert(global_font_default != -1)
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/* Font array. */
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static FontBLF *global_font[BLF_MAX_FONT] = {NULL};
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/* Default size and dpi, for BLF_draw_default. */
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static int global_font_default = -1;
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static int global_font_points = 11;
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static int global_font_dpi = 72;
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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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return NULL;
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}
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int BLF_init(int points, int dpi)
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{
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int i;
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for (i = 0; i < BLF_MAX_FONT; i++)
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global_font[i] = NULL;
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global_font_points = points;
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global_font_dpi = dpi;
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return blf_font_init();
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}
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void BLF_default_dpi(int dpi)
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{
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global_font_dpi = dpi;
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}
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void BLF_exit(void)
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{
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FontBLF *font;
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int i;
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for (i = 0; i < BLF_MAX_FONT; i++) {
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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] = NULL;
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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_cache_clear(void)
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{
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FontBLF *font;
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int i;
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for (i = 0; i < BLF_MAX_FONT; i++) {
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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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static int blf_search(const char *name)
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{
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FontBLF *font;
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int i;
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for (i = 0; i < BLF_MAX_FONT; i++) {
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font = global_font[i];
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if (font && (STREQ(font->name, name)))
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return i;
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}
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return -1;
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}
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static int blf_search_available(void)
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{
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int i;
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for (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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return -1;
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}
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void BLF_default_set(int fontid)
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{
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FontBLF *font = blf_get(fontid);
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if (font || fontid == -1) {
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global_font_default = fontid;
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}
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}
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int BLF_load(const char *name)
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{
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FontBLF *font;
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char *filename;
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int i;
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if (!name)
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return -1;
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/* check if we already load this font. */
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i = blf_search(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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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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filename = blf_dir_search(name);
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if (!filename) {
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printf("Can't find font: %s\n", name);
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return -1;
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}
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font = blf_font_new(name, filename);
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MEM_freeN(filename);
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if (!font) {
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printf("Can't load font: %s\n", name);
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return -1;
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}
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global_font[i] = font;
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return i;
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}
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int BLF_load_unique(const char *name)
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{
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FontBLF *font;
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char *filename;
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int i;
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if (!name)
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return -1;
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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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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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filename = blf_dir_search(name);
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if (!filename) {
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printf("Can't find font: %s\n", name);
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return -1;
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}
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font = blf_font_new(name, filename);
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MEM_freeN(filename);
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if (!font) {
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printf("Can't load font: %s\n", name);
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return -1;
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}
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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, unsigned char *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 unsigned char *mem, int mem_size)
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{
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FontBLF *font;
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int i;
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if (!name)
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return -1;
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i = blf_search(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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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 || !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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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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global_font[i] = font;
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return i;
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}
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int BLF_load_mem_unique(const char *name, const unsigned char *mem, int mem_size)
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{
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FontBLF *font;
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int i;
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if (!name)
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return -1;
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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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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 || !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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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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global_font[i] = font;
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return i;
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}
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void BLF_unload(const char *name)
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{
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FontBLF *font;
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int i;
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for (i = 0; i < BLF_MAX_FONT; i++) {
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font = global_font[i];
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if (font && (STREQ(font->name, name))) {
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blf_font_free(font);
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global_font[i] = NULL;
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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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blf_font_free(font);
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global_font[fontid] = NULL;
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}
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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_enable_default(int option)
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{
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FontBLF *font = blf_get(global_font_default);
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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_default(int option)
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{
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FontBLF *font = blf_get(global_font_default);
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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_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 double 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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else
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x += 0.1f * xa;
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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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else
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y += 0.1f * ya;
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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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else
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z += 0.1f * za;
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}
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font->pos[0] = x;
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font->pos[1] = y;
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font->pos[2] = z;
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}
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}
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void BLF_size(int fontid, int size, int dpi)
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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, dpi);
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}
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}
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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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void BLF_draw_default(float x, float y, float z, const char *str, size_t len)
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{
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ASSERT_DEFAULT_SET;
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BLF_size(global_font_default, global_font_points, global_font_dpi);
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BLF_position(global_font_default, x, y, z);
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BLF_draw(global_font_default, str, len);
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}
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/* same as above but call 'BLF_draw_ascii' */
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void BLF_draw_default_ascii(float x, float y, float z, const char *str, size_t len)
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{
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ASSERT_DEFAULT_SET;
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BLF_size(global_font_default, global_font_points, global_font_dpi);
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BLF_position(global_font_default, x, y, z);
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BLF_draw_ascii(global_font_default, str, len); /* XXX, use real length */
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}
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void BLF_rotation_default(float angle)
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{
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FontBLF *font = blf_get(global_font_default);
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if (font) {
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font->angle = angle;
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}
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}
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static void blf_draw__start(FontBLF *font, GLint *mode, GLint *param)
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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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glEnable(GL_BLEND);
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glEnable(GL_TEXTURE_2D);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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/* Save the current matrix mode. */
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glGetIntegerv(GL_MATRIX_MODE, mode);
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glMatrixMode(GL_TEXTURE);
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glPushMatrix();
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glLoadIdentity();
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glMatrixMode(GL_MODELVIEW);
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glPushMatrix();
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if (font->flags & BLF_MATRIX)
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glMultMatrixd((GLdouble *)&font->m);
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glTranslatef(font->pos[0], font->pos[1], font->pos[2]);
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if (font->flags & BLF_ASPECT)
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glScalef(font->aspect[0], font->aspect[1], font->aspect[2]);
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if (font->flags & BLF_ROTATION) /* radians -> degrees */
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glRotatef(font->angle * (float)(180.0 / M_PI), 0.0f, 0.0f, 1.0f);
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if (font->shadow || font->blur)
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glGetFloatv(GL_CURRENT_COLOR, font->orig_col);
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/* always bind the texture for the first glyph */
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font->tex_bind_state = -1;
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/* Save the current parameter to restore it later. */
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glGetTexEnviv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, param);
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if (*param != GL_MODULATE)
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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}
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static void blf_draw__end(GLint mode, GLint param)
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{
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/* and restore the original value. */
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if (param != GL_MODULATE)
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, param);
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glMatrixMode(GL_TEXTURE);
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glPopMatrix();
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glMatrixMode(GL_MODELVIEW);
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glPopMatrix();
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if (mode != GL_MODELVIEW)
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glMatrixMode(mode);
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glDisable(GL_BLEND);
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glDisable(GL_TEXTURE_2D);
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}
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void BLF_draw(int fontid, const char *str, size_t len)
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{
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FontBLF *font = blf_get(fontid);
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GLint mode, param;
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if (font && font->glyph_cache) {
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blf_draw__start(font, &mode, ¶m);
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blf_font_draw(font, str, len);
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blf_draw__end(mode, param);
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}
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}
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void BLF_draw_ascii(int fontid, const char *str, size_t len)
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{
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FontBLF *font = blf_get(fontid);
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GLint mode, param;
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if (font && font->glyph_cache) {
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blf_draw__start(font, &mode, ¶m);
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blf_font_draw_ascii(font, str, len);
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blf_draw__end(mode, param);
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}
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}
|
|
|
|
int BLF_draw_mono(int fontid, const char *str, size_t len, int cwidth)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
GLint mode, param;
|
|
int columns = 0;
|
|
|
|
if (font && font->glyph_cache) {
|
|
blf_draw__start(font, &mode, ¶m);
|
|
columns = blf_font_draw_mono(font, str, len, cwidth);
|
|
blf_draw__end(mode, param);
|
|
}
|
|
|
|
return columns;
|
|
}
|
|
|
|
size_t BLF_width_to_strlen(int fontid, const char *str, size_t 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;
|
|
ret = blf_font_width_to_strlen(font, str, len, width / xa, r_width);
|
|
if (r_width) {
|
|
*r_width *= xa;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
if (r_width) {
|
|
*r_width = 0.0f;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
size_t BLF_width_to_rstrlen(int fontid, const char *str, size_t 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;
|
|
ret = blf_font_width_to_rstrlen(font, str, len, width / xa, r_width);
|
|
if (r_width) {
|
|
*r_width *= xa;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
if (r_width) {
|
|
*r_width = 0.0f;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void BLF_boundbox(int fontid, const char *str, size_t len, rctf *box)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
blf_font_boundbox(font, str, len, box);
|
|
}
|
|
}
|
|
|
|
void BLF_width_and_height(int fontid, const char *str, size_t len, float *r_width, float *r_height)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font && font->glyph_cache) {
|
|
blf_font_width_and_height(font, str, len, r_width, r_height);
|
|
}
|
|
else {
|
|
*r_width = *r_height = 0.0f;
|
|
}
|
|
}
|
|
|
|
void BLF_width_and_height_default(const char *str, size_t len, float *r_width, float *r_height)
|
|
{
|
|
ASSERT_DEFAULT_SET;
|
|
|
|
BLF_size(global_font_default, global_font_points, global_font_dpi);
|
|
BLF_width_and_height(global_font_default, str, len, r_width, r_height);
|
|
}
|
|
|
|
float BLF_width(int fontid, const char *str, size_t len)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font && font->glyph_cache) {
|
|
return blf_font_width(font, str, len);
|
|
}
|
|
|
|
return 0.0f;
|
|
}
|
|
|
|
float BLF_fixed_width(int fontid)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font && font->glyph_cache) {
|
|
return blf_font_fixed_width(font);
|
|
}
|
|
|
|
return 0.0f;
|
|
}
|
|
|
|
float BLF_width_default(const char *str, size_t len)
|
|
{
|
|
ASSERT_DEFAULT_SET;
|
|
|
|
BLF_size(global_font_default, global_font_points, global_font_dpi);
|
|
return BLF_width(global_font_default, str, len);
|
|
}
|
|
|
|
float BLF_height(int fontid, const char *str, size_t len)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font && font->glyph_cache) {
|
|
return blf_font_height(font, str, len);
|
|
}
|
|
|
|
return 0.0f;
|
|
}
|
|
|
|
float BLF_height_max(int fontid)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font && font->glyph_cache) {
|
|
return font->glyph_cache->max_glyph_height;
|
|
}
|
|
|
|
return 0.0f;
|
|
}
|
|
|
|
float BLF_width_max(int fontid)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font && font->glyph_cache) {
|
|
return font->glyph_cache->max_glyph_width;
|
|
}
|
|
|
|
return 0.0f;
|
|
}
|
|
|
|
float BLF_descender(int fontid)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font && font->glyph_cache) {
|
|
return font->glyph_cache->descender;
|
|
}
|
|
|
|
return 0.0f;
|
|
}
|
|
|
|
float BLF_ascender(int fontid)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font && font->glyph_cache) {
|
|
return font->glyph_cache->ascender;
|
|
}
|
|
|
|
return 0.0f;
|
|
}
|
|
|
|
float BLF_height_default(const char *str, size_t len)
|
|
{
|
|
ASSERT_DEFAULT_SET;
|
|
|
|
BLF_size(global_font_default, global_font_points, global_font_dpi);
|
|
|
|
return BLF_height(global_font_default, str, len);
|
|
}
|
|
|
|
void BLF_rotation(int fontid, float angle)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
font->angle = angle;
|
|
}
|
|
}
|
|
|
|
void BLF_clipping(int fontid, float xmin, float ymin, float xmax, float 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_clipping_default(float xmin, float ymin, float xmax, float ymax)
|
|
{
|
|
FontBLF *font = blf_get(global_font_default);
|
|
|
|
if (font) {
|
|
font->clip_rec.xmin = xmin;
|
|
font->clip_rec.ymin = ymin;
|
|
font->clip_rec.xmax = xmax;
|
|
font->clip_rec.ymax = ymax;
|
|
}
|
|
}
|
|
|
|
void BLF_shadow(int fontid, int level, float r, float g, float b, float a)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
font->shadow = level;
|
|
font->shadow_col[0] = r;
|
|
font->shadow_col[1] = g;
|
|
font->shadow_col[2] = b;
|
|
font->shadow_col[3] = a;
|
|
}
|
|
}
|
|
|
|
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, unsigned char *cbuf, int w, int h, int nch, struct ColorManagedDisplay *display)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
font->buf_info.fbuf = fbuf;
|
|
font->buf_info.cbuf = cbuf;
|
|
font->buf_info.w = w;
|
|
font->buf_info.h = h;
|
|
font->buf_info.ch = nch;
|
|
font->buf_info.display = display;
|
|
}
|
|
}
|
|
|
|
void BLF_buffer_col(int fontid, float r, float g, float b, float a)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font) {
|
|
font->buf_info.col[0] = r;
|
|
font->buf_info.col[1] = g;
|
|
font->buf_info.col[2] = b;
|
|
font->buf_info.col[3] = a;
|
|
}
|
|
}
|
|
|
|
void BLF_draw_buffer(int fontid, const char *str)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
|
|
if (font && font->glyph_cache && (font->buf_info.fbuf || font->buf_info.cbuf)) {
|
|
blf_font_buffer(font, str);
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void BLF_state_print(int fontid)
|
|
{
|
|
FontBLF *font = blf_get(fontid);
|
|
if (font) {
|
|
printf("fontid %d %p\n", fontid, (void *)font);
|
|
printf(" name: '%s'\n", font->name);
|
|
printf(" size: %u\n", font->size);
|
|
printf(" dpi: %u\n", font->dpi);
|
|
printf(" pos: %.6f %.6f %.6f\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 (NULL)\n", fontid);
|
|
}
|
|
fflush(stdout);
|
|
}
|
|
#endif
|