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#include <stdio.h>
#include <ft2build.h>
#include FT_FREETYPE_H
FT_Library library;
FT_Face face;
const int max_width = 512;
const int max_height = max_width;
const char chars[] = "abcdefghijklmnopqrstuv";
void save(const char *filename, unsigned char *data, int w, int h)
{
char header[18] = {0};
header[2] = 2; // 2=rgb 3=grayscale
header[12] = w&255; // width
header[13] = w>>8;
header[14] = h&255; // height
header[15] = h>>8;
header[16] = 32;
header[17] = (1<<5) | 8; // org
char tganame[128];
sprintf(tganame, "%s.tga", filename);
FILE *f = fopen(tganame, "wb");
fwrite(header, 1, sizeof(header), f);
for(int y = 0; y < h; y++)
for(int x = 0; x < w; x++)
{
fputc(0xff, f);
fputc(0xff, f);
fputc(0xff, f);
fputc(data[y*w+x], f);
}
fclose(f);
char cmd[512];
sprintf(cmd, "convert %s.tga %s.png; rm %s.tga",filename, filename, filename);
system(cmd);
}
void grow(unsigned char *in, unsigned char *out, int w, int h)
{
for(int y = 0; y < h; y++)
for(int x = 0; x < w; x++)
{
int c = in[y*w+x];
for (int s_y = -1; s_y <= 1; s_y++)
for (int s_x = -1; s_x <= 1; s_x++)
{
int get_x = x+s_x;
int get_y = y+s_y;
if (get_x >= 0 && get_y >= 0 && get_x < w && get_y < h)
{
int index = get_y*w+get_x;
if(in[index] > c)
c = in[index];
}
}
out[y*w+x] = c;
}
}
unsigned char alpha_buf[max_width*(max_height*4)] = {0};
unsigned char alpha_buf2[max_width*(max_height*4)] = {0};
unsigned char *alpha = &alpha_buf[max_width*2];
unsigned char *alpha2 = &alpha_buf2[max_width*2];
int gen(const char *filename, const char *output, int size, int border)
{
char buf[256];
int w = 128;
int h = 128;
while (1)
{
bool continue_now = false;
memset(alpha, 0, w*h);
sprintf(buf, "trying to generate %dx%d", w, h);
puts(buf);
sprintf(buf, "%s%d.fnt", output, size);
FILE *fnt = fopen(buf, "wb");
sprintf(buf, "%s%d.tga", output, size);
fprintf(fnt, "info face=\"%s\" size=%d bold=0 italic=0 charset=\"\" unicode=1 stretchH=100 smooth=1 aa=4 padding=0,0,0,0 spacing=1,1\n", output, size);
fprintf(fnt, "common lineHeight=%d base=26 scaleW=%d scaleH=%d pages=1 packed=0\n", size, w, h);
fprintf(fnt, "page id=0 file=\"%s\"\n", buf);
int error = FT_New_Face(library, filename, 0, &face);
int outline_thickness = size >= 18 ? 2 : 1;
int spacing = outline_thickness + 1;
error = FT_Set_Pixel_Sizes(face, 0, size);
int x = spacing;
int y = spacing;
for(int i = 32; i < 255; i++)
{
if((i >= 8*16-1 && i < 10*16) || i == 11*16-1) // remove some strange characters
continue;
error = FT_Load_Char(face, i, FT_LOAD_RENDER);
if(error)
continue;
FT_Bitmap *bitmap = &face->glyph->bitmap;
if(x + bitmap->width + spacing*2 >= w)
{
x = spacing;
y += size+spacing*2;
}
x += spacing;
fprintf(fnt, "char id=%d x=%d y=%d width=%d height=%d xoffset=%d yoffset=%d xadvance=%d page=0 chnl=15\n",
i, x-outline_thickness, y-outline_thickness, bitmap->width+2*outline_thickness, bitmap->rows+2*outline_thickness, face->glyph->bitmap_left-1, size-face->glyph->bitmap_top, face->glyph->advance.x>>6);
if (x + bitmap->width - 1 >= w || y + bitmap->rows - 1 >= h)
{
if (w == h)
w <<= 1;
else
h <<= 1;
continue_now = true;
break;
}
for(int py = 0; py < bitmap->rows; py++)
for(int px = 0; px < bitmap->width; px++)
alpha[(py+y)*w+px+x] = bitmap->buffer[py*bitmap->pitch+px];
x += spacing;
x += bitmap->width;
}
fclose(fnt);
if (continue_now)
continue;
sprintf(buf, "%s%d", output, size);
save(buf, alpha, w, h);
// generate outline
int passes = size >= 18 ? 2 : 1;
for (int i = 0; i < passes; i++)
{
grow(alpha, alpha2, w, h);
unsigned char *temp = alpha;
alpha = alpha2;
alpha2 = temp;
}
sprintf(buf, "%s%d_b", output, size);
save(buf, alpha, w, h);
break;
}
}
void gen_font(char *font_name, char *output, int size_count, int *sizes)
{
for(int i = 0; i < size_count; i++)
gen(font_name, output, sizes[i], 0);
}
int main()
{
int error = FT_Init_FreeType(&library);
int tahoma_sizes[] = { 8, 9, 10, 11, 12 };
gen_font("tahoma.ttf", "default_font", sizeof(tahoma_sizes)/sizeof(*tahoma_sizes), tahoma_sizes);
int alte_haas_sizes[] = { 13, 14, 15, 16, 17 };
gen_font("alte_haas_grotesk.ttf", "default_font", sizeof(alte_haas_sizes)/sizeof(*alte_haas_sizes), alte_haas_sizes);
int alte_haas_bold_sizes[] = { 18, 19, 20, 36 };
gen_font("alte_haas_grotesk_bold.ttf", "default_font", sizeof(alte_haas_bold_sizes)/sizeof(*alte_haas_bold_sizes), alte_haas_bold_sizes);
return 0;
}
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