typedef struct sImage
{
unsigned w, h;
- char *data;
+ char *data;
} Image;
typedef struct sGlyph
{
unsigned index;
unsigned code;
- Image image;
+ Image image;
unsigned x, y;
- int offset_x;
- int offset_y;
- int advance;
+ int offset_x;
+ int offset_y;
+ int advance;
} Glyph;
typedef struct sKerning
typedef struct sFont
{
unsigned size;
- int ascent;
- int descent;
+ int ascent;
+ int descent;
unsigned n_glyphs;
- Glyph *glyphs;
+ Glyph *glyphs;
unsigned n_kerning;
- Kerning *kerning;
- Image image;
+ Kerning *kerning;
+ Image image;
} Font;
-void usage();
+typedef int bool;
+
+void usage(void);
+int convert_numeric_option(char, int);
+void convert_code_point_range(char, unsigned *, unsigned *);
+void convert_size(char, unsigned *, unsigned *);
unsigned round_to_pot(unsigned);
void *alloc_image_data(size_t, size_t);
-int init_font(Font *, FT_Face, unsigned, unsigned, int);
-int render_grid(Font *, unsigned, unsigned, unsigned, int);
-int render_packed(Font *);
+int init_font(Font *, FT_Face, unsigned, unsigned, bool);
+int render_grid(Font *, unsigned, unsigned, unsigned, bool);
+int render_packed(Font *, unsigned, unsigned);
int save_defs(const char *, const Font *);
int save_png(const char *, const Image *, char);
int main(int argc, char **argv)
{
char *fn;
- int begin = 0;
- int end = 255;
- int size = 10;
- int cpl = 0;
- int cellw = 0;
- int cellh = 0;
- char autohinter = 0;
- char seq = 0;
- char alpha = 0;
- char invert = 0;
- char pack = 0;
+ unsigned begin = 0;
+ unsigned end = 255;
+ unsigned size = 10;
+ unsigned cpl = 0;
+ unsigned cellw = 0;
+ unsigned cellh = 0;
+ bool autohinter = 0;
+ bool seq = 0;
+ bool alpha = 0;
+ bool invert = 0;
+ bool pack = 0;
+ unsigned margin = 0;
+ unsigned padding = 1;
FT_Library freetype;
- FT_Face face;
+ FT_Face face;
- int err;
- int i;
+ int err;
+ int i;
char *out_fn = "font.png";
char *def_fn = NULL;
return 1;
}
- while((i = getopt(argc, argv, "r:s:l:c:o:atvh?ed:pi")) != -1)
+ while((i = getopt(argc, argv, "r:s:l:c:o:atvh?ed:pim:n:")) != -1)
{
- char *ptr;
- int temp;
switch(i)
{
case 'r':
- if(!strcmp(optarg, "all"))
- {
- begin = 0;
- end = 0x110000;
- }
- else
- {
- if(!isdigit(optarg[0]))
- temp = -1;
- else
- {
- temp = strtol(optarg, &ptr, 0);
- if(ptr[0]!=',' || !isdigit(ptr[1]))
- temp = -1;
- }
- if(temp<0)
- {
- printf("Not a valid range: %s\n", optarg);
- exit(1);
- }
- else
- {
- begin = temp;
- end = strtol(ptr+1, NULL, 0);
- }
- }
+ convert_code_point_range('r', &begin, &end);
break;
case 's':
- size = strtol(optarg, NULL, 0);
+ size = convert_numeric_option('s', 1);
break;
case 'l':
- cpl = strtol(optarg, NULL, 0);
+ cpl = convert_numeric_option('l', 1);
break;
case 'c':
- if(!strcmp(optarg, "auto"))
- {
- cellw = 0;
- cellh = 0;
- }
- else if(!strcmp(optarg, "autorect"))
- {
- cellw = 0;
- cellh = 1;
- }
- else
- {
- cellw = strtol(optarg, &ptr, 0);
- if(ptr[0]=='x' && isdigit(ptr[1]))
- cellh = strtol(ptr+1, NULL, 0);
- else
- cellh = cellw;
- }
+ convert_size('c', &cellw, &cellh);
break;
case 'o':
out_fn = optarg;
case 'i':
invert = 1;
break;
+ case 'm':
+ margin = convert_numeric_option('m', 0);
+ break;
+ case 'n':
+ padding = convert_numeric_option('n', 0);
+ break;
}
}
if(!strcmp(out_fn, "-"))
return 1;
if(pack)
- err = render_packed(&font);
+ err = render_packed(&font, margin, padding);
else
err = render_grid(&font, cellw, cellh, cpl, seq);
if(err)
return 0;
}
-void usage()
+void usage(void)
{
- printf("ttf2png 1.0 - True Type Font to PNG converter\n"
- "Copyright (c) 2004-2008 Mikko Rasa, Mikkosoft Productions\n"
+ printf("ttf2png 1.1 - True Type Font to PNG converter\n"
+ "Copyright (c) 2004-2018 Mikko Rasa, Mikkosoft Productions\n"
"Distributed under the GNU General Public License\n\n");
printf("Usage: ttf2png [options] <TTF file>\n\n");
printf("Accepted options (default values in [brackets])\n"
- " -r Range of characters to convert [0,255]\n"
+ " -r Range of code points to convert [0,255]\n"
" -s Font size to use, in pixels [10]\n"
- " -l Number of characters to put in one line [auto]\n"
- " -c Character cell size, in pixels [auto]\n"
+ " -l Number of glyphs to put in one line [auto]\n"
+ " -c Glyph cell size, in pixels (grid mode only) [auto]\n"
" -o Output file name (or - for stdout) [font.png]\n");
printf(" -a Force autohinter\n"
" -t Render glyphs to alpha channel\n"
" -i Invert colors of the glyphs\n"
" -v Increase the level of verbosity\n"
- " -e Use cells in sequence, without gaps\n"
+ " -e Use cells in sequence, without gaps (grid mode only)\n"
" -p Pack the glyphs tightly instead of in a grid\n"
+ " -m Margin around image edges (packed mode only) [0]\n"
+ " -n Padding between glyphs (packed mode only) [1]\n"
" -d File name for writing glyph definitions\n"
" -h Print this message\n");
}
+int convert_numeric_option(char opt, int min_value)
+{
+ int value;
+ char *ptr;
+
+ value = strtol(optarg, &ptr, 0);
+ if(value<min_value || *ptr)
+ {
+ printf("Invalid option argument in -%c %s\n", opt, optarg);
+ exit(1);
+ }
+
+ return value;
+}
+
+void convert_code_point_range(char opt, unsigned *begin, unsigned *end)
+{
+ int value;
+ char *ptr;
+
+ if(!strcmp(optarg, "all"))
+ {
+ *begin = 0;
+ *end = 0x10FFFF;
+ return;
+ }
+
+ value = strtol(optarg, &ptr, 0);
+ if(value>0 && *ptr==',')
+ {
+ *begin = value;
+ value = strtol(ptr+1, &ptr, 0);
+ if(value>0 && !*ptr)
+ {
+ *end = value;
+ return;
+ }
+ }
+
+ printf("Invalid option argument in -%c %s\n", opt, optarg);
+ exit(1);
+}
+
+void convert_size(char opt, unsigned *width, unsigned *height)
+{
+ int value;
+ char *ptr;
+
+ if(!strcmp(optarg, "auto"))
+ {
+ *width = 0;
+ *height = 0;
+ return;
+ }
+ else if(!strcmp(optarg, "autorect"))
+ {
+ *width = 0;
+ *height = 1;
+ return;
+ }
+
+ value = strtol(optarg, &ptr, 0);
+ if(value>0)
+ {
+ *width = value;
+ if(*ptr=='x')
+ {
+ value = strtol(ptr+1, &ptr, 0);
+ if(value>0 && !*ptr)
+ {
+ *height = value;
+ return;
+ }
+ }
+ else if(!*ptr)
+ {
+ *height = *width;
+ return;
+ }
+ }
+
+ printf("Invalid option argument in -%c %s\n", opt, optarg);
+ exit(1);
+}
+
unsigned round_to_pot(unsigned n)
{
n -= 1;
return ptr;
}
-int init_font(Font *font, FT_Face face, unsigned first, unsigned last, int autohinter)
+int init_font(Font *font, FT_Face face, unsigned first, unsigned last, bool autohinter)
{
unsigned i, j;
unsigned size = 0;
font->glyphs = NULL;
for(i=first; i<=last; ++i)
{
- unsigned n;
+ unsigned n;
FT_Bitmap *bmp = &face->glyph->bitmap;
- unsigned x, y;
- int flags = 0;
- Glyph *glyph;
+ unsigned x, y;
+ int flags = 0;
+ Glyph *glyph;
n = FT_Get_Char_Index(face, i);
if(!n)
return 0;
}
-int render_grid(Font *font, unsigned cellw, unsigned cellh, unsigned cpl, int seq)
+int render_grid(Font *font, unsigned cellw, unsigned cellh, unsigned cpl, bool seq)
{
unsigned i;
- int top = 0, bot = 0;
+ int top = 0, bot = 0;
unsigned first, last;
unsigned maxw = 0, maxh = 0;
for(i=0; i<font->n_glyphs; ++i)
{
- Glyph *glyph;
+ Glyph *glyph;
unsigned ci, cx, cy;
unsigned x, y;
return 0;
}
-int render_packed(Font *font)
+int render_packed(Font *font, unsigned margin, unsigned padding)
{
unsigned i;
- size_t area = 0;
- char *used_glyphs;
+ size_t area = 0;
+ char *used_glyphs;
unsigned *used_pixels;
- unsigned cx = 0, cy;
+ unsigned cx = margin, cy;
unsigned used_h = 0;
/* Compute the total area occupied by glyphs and padding. */
for(i=0; i<font->n_glyphs; ++i)
{
- size_t a = area+(font->glyphs[i].image.w+1)*(font->glyphs[i].image.h+1);
+ size_t a = area+(font->glyphs[i].image.w+padding)*(font->glyphs[i].image.h+padding);
if(a<area)
{
fprintf(stderr, "Overflow in counting total glyph area\n");
imperfections in the packing. */
for(font->image.w=1;; font->image.w<<=1)
{
- font->image.h = (area*5/4)/font->image.w;
+ if(font->image.w<=margin*2)
+ continue;
+ font->image.h = (area*5/4)/(font->image.w-margin*2)+margin*2;
if(font->image.h<=font->image.w)
break;
}
used_glyphs = (char *)malloc(font->n_glyphs);
memset(used_glyphs, 0, font->n_glyphs);
- for(cy=0; cy<font->image.h;)
+ for(cy=margin; cy+margin<font->image.h;)
{
unsigned w;
unsigned x, y;
- Glyph *glyph = NULL;
+ Glyph *glyph = NULL;
unsigned best_score = 0;
unsigned target_h = 0;
- /* Find the leftmost free pixel on this row. Also record the lowest extent of glyphs
- to the left of the free position. */
- for(; (cx<font->image.w && used_pixels[cx]>cy); ++cx)
- if(used_pixels[cx]-cy-1>target_h)
- target_h = used_pixels[cx]-cy-1;
+ /* Find the leftmost free pixel on this row. Also record the lowest
+ extent of glyphs to the left of the free position. */
+ for(; (cx+margin<font->image.w && used_pixels[cx]>cy); ++cx)
+ if(used_pixels[cx]-cy-padding>target_h)
+ target_h = used_pixels[cx]-cy-padding;
- if(cx>=font->image.w)
+ if(cx+margin>=font->image.w)
{
- cx = 0;
+ cx = margin;
++cy;
continue;
}
/* Count the free pixel at this position. */
- for(w=0; (cx+w<font->image.w && used_pixels[cx+w]<=cy); ++w) ;
+ for(w=0; (cx+w+margin<font->image.w && used_pixels[cx+w]<=cy); ++w) ;
/* Find a suitable glyph to put here. */
for(i=0; i<font->n_glyphs; ++i)
/* Prefer glyphs that would reach exactly as low as the ones left
of here. This aims to create a straight edge at the bottom for
lining up further glyphs. */
- score = g->image.h+1;
+ score = g->image.h+padding;
if(g->image.h==target_h)
score *= g->image.w;
else
continue;
font->image.data[cx+x+(cy+y)*font->image.w] = 255-glyph->image.data[x+y*glyph->image.w];
}
- for(x=0; x<glyph->image.w+2; ++x)
+ for(x=0; x<glyph->image.w+2*padding; ++x)
{
- if(cx+x<1 || cx+x>font->image.w)
+ if(cx+x<padding || cx+x>=font->image.w+padding)
continue;
- if(used_pixels[cx+x-1]<cy+glyph->image.h+1)
- used_pixels[cx+x-1] = cy+glyph->image.h+1;
+ if(used_pixels[cx+x-padding]<cy+glyph->image.h+padding)
+ used_pixels[cx+x-padding] = cy+glyph->image.h+padding;
}
- if(cy+glyph->image.h>used_h)
- used_h = cy+glyph->image.h;
+ if(cy+glyph->image.h+margin>used_h)
+ used_h = cy+glyph->image.h+margin;
}
/* Trim the image to the actually used size, in case the original estimate
int save_defs(const char *fn, const Font *font)
{
- FILE *out;
+ FILE *out;
unsigned i;
out = fopen(fn, "w");
int save_png(const char *fn, const Image *image, char alpha)
{
- FILE *out;
+ FILE *out;
png_struct *pngs;
- png_info *pngi;
- png_byte **rows;
- unsigned i;
- png_byte *data2 = 0;
- int color;
+ png_info *pngi;
+ png_byte **rows;
+ unsigned i;
+ png_byte *data2 = 0;
+ int color;
if(!strcmp(fn, "-"))
out = stdout;
projects / ttf2png.git / blobdiff