561 lines
10 KiB
C
561 lines
10 KiB
C
/**
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* $Id:
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*
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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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#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 "BKE_utildefines.h"
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#include "BLI_blenlib.h"
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#include "BLI_linklist.h" /* linknode */
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#include "BLI_string.h"
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#include "BIF_gl.h"
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#include "BIF_glutil.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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/* Font array. */
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FontBLF *global_font[BLF_MAX_FONT];
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/* Number of font. */
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int global_font_num= 0;
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/* Current font. */
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int global_font_cur= 0;
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/* Default size and dpi, for BLF_draw_default. */
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int global_font_default= -1;
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int global_font_points= 11;
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int global_font_dpi= 72;
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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_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 < global_font_num; 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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}
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blf_font_exit();
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}
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static int blf_search(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 && (!strcmp(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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int BLF_load(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];
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return(i);
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}
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if (global_font_num+1 >= BLF_MAX_FONT) {
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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[global_font_num]= font;
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i= global_font_num;
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global_font_num++;
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return(i);
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}
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void BLF_metrics_attach(unsigned char *mem, int mem_size)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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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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int BLF_load_mem(char *name, 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];
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return(i);
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}
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if (global_font_num+1 >= BLF_MAX_FONT) {
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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[global_font_num]= font;
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i= global_font_num;
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global_font_num++;
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return(i);
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}
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void BLF_set(int fontid)
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{
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if (fontid >= 0 && fontid < BLF_MAX_FONT)
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global_font_cur= fontid;
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}
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int BLF_get(void)
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{
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return(global_font_cur);
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}
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void BLF_enable(int option)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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if (font)
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font->flags |= option;
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}
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void BLF_disable(int option)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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if (font)
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font->flags &= ~option;
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}
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void BLF_aspect(float aspect)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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if (font)
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font->aspect= aspect;
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}
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void BLF_position(float x, float y, float z)
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{
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FontBLF *font;
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float remainder;
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font= global_font[global_font_cur];
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if (font) {
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remainder= x - floor(x);
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if (remainder > 0.4 && remainder < 0.6) {
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if (remainder < 0.5)
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x -= 0.1 * font->aspect;
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else
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x += 0.1 * font->aspect;
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}
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remainder= y - floor(y);
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if (remainder > 0.4 && remainder < 0.6) {
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if (remainder < 0.5)
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y -= 0.1 * font->aspect;
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else
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y += 0.1 * font->aspect;
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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 size, int dpi)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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if (font)
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blf_font_size(font, size, dpi);
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}
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void BLF_blur(int size)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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if (font)
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font->blur= size;
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}
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void BLF_draw_default(float x, float y, float z, char *str)
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{
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FontBLF *font;
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int old_font=0, old_point=0, old_dpi=0;
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if (!str)
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return;
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if (global_font_default == -1)
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global_font_default= blf_search("default");
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if (global_font_default == -1) {
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printf("Warning: Can't found default font!!\n");
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return;
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}
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font= global_font[global_font_cur];
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if (font) {
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old_font= global_font_cur;
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old_point= font->size;
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old_dpi= font->dpi;
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}
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global_font_cur= global_font_default;
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BLF_size(global_font_points, global_font_dpi);
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BLF_position(x, y, z);
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BLF_draw(str);
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/* restore the old font. */
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if (font) {
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global_font_cur= old_font;
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BLF_size(old_point, old_dpi);
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}
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}
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void BLF_default_rotation(float angle)
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{
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if (global_font_default>=0) {
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global_font[global_font_default]->angle= angle;
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if(angle)
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global_font[global_font_default]->flags |= BLF_ROTATION;
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else
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global_font[global_font_default]->flags &= ~BLF_ROTATION;
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}
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}
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void BLF_draw(char *str)
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{
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FontBLF *font;
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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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font= global_font[global_font_cur];
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if (font) {
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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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glPushMatrix();
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glTranslatef(font->pos[0], font->pos[1], font->pos[2]);
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glScalef(font->aspect, font->aspect, 1.0);
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if (font->flags & BLF_ROTATION)
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glRotatef(font->angle, 0.0f, 0.0f, 1.0f);
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blf_font_draw(font, str);
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glPopMatrix();
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glDisable(GL_BLEND);
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glDisable(GL_TEXTURE_2D);
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}
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}
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void BLF_boundbox(char *str, rctf *box)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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if (font)
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blf_font_boundbox(font, str, box);
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}
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void BLF_width_and_height(char *str, float *width, float *height)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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if (font)
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blf_font_width_and_height(font, str, width, height);
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}
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float BLF_width(char *str)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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if (font)
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return(blf_font_width(font, str));
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return(0.0f);
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}
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float BLF_fixed_width(void)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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if (font)
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return(blf_font_fixed_width(font));
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return(0.0f);
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}
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float BLF_width_default(char *str)
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{
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FontBLF *font;
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float width;
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int old_font=0, old_point=0, old_dpi=0;
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if (global_font_default == -1)
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global_font_default= blf_search("default");
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if (global_font_default == -1) {
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printf("Error: Can't found default font!!\n");
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return(0.0f);
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}
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font= global_font[global_font_cur];
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if (font) {
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old_font= global_font_cur;
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old_point= font->size;
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old_dpi= font->dpi;
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}
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global_font_cur= global_font_default;
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BLF_size(global_font_points, global_font_dpi);
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width= BLF_width(str);
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/* restore the old font. */
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if (font) {
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global_font_cur= old_font;
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BLF_size(old_point, old_dpi);
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}
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return(width);
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}
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float BLF_height(char *str)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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if (font)
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return(blf_font_height(font, str));
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return(0.0f);
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}
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float BLF_height_default(char *str)
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{
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FontBLF *font;
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float height;
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int old_font=0, old_point=0, old_dpi=0;
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if (global_font_default == -1)
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global_font_default= blf_search("default");
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if (global_font_default == -1) {
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printf("Error: Can't found default font!!\n");
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return(0.0f);
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}
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font= global_font[global_font_cur];
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if (font) {
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old_font= global_font_cur;
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old_point= font->size;
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old_dpi= font->dpi;
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}
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global_font_cur= global_font_default;
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BLF_size(global_font_points, global_font_dpi);
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height= BLF_height(str);
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/* restore the old font. */
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if (font) {
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global_font_cur= old_font;
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BLF_size(old_point, old_dpi);
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}
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return(height);
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}
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void BLF_rotation(float angle)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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if (font)
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font->angle= angle;
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}
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void BLF_clipping(float xmin, float ymin, float xmax, float ymax)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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if (font) {
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font->clip_rec.xmin= xmin;
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font->clip_rec.ymin= ymin;
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font->clip_rec.xmax= xmax;
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font->clip_rec.ymax= ymax;
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}
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}
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void BLF_shadow(int level, float r, float g, float b, float a)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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if (font) {
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font->shadow= level;
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font->shadow_col[0]= r;
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font->shadow_col[1]= g;
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font->shadow_col[2]= b;
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font->shadow_col[3]= a;
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}
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}
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void BLF_shadow_offset(int x, int y)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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if (font) {
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font->shadow_x= x;
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font->shadow_y= y;
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}
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}
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void BLF_buffer(float *fbuf, unsigned char *cbuf, unsigned int w, unsigned int h, int nch)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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if (font) {
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font->b_fbuf= fbuf;
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font->b_cbuf= cbuf;
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font->bw= w;
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font->bh= h;
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font->bch= nch;
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}
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}
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void BLF_buffer_col(float r, float g, float b, float a)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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if (font) {
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font->b_col[0]= r;
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font->b_col[1]= g;
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font->b_col[2]= b;
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font->b_col[3]= a;
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}
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}
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void BLF_draw_buffer(char *str)
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{
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FontBLF *font;
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font= global_font[global_font_cur];
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if (font)
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blf_font_buffer(font, str);
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}
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