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 struct sRange
+{
+ unsigned first;
+ unsigned last;
+} Range;
+
+typedef int bool;
+
+void usage(void);
+int convert_numeric_option(char, int);
+void convert_code_point_range(char, Range *);
+unsigned str_to_code_point(const char *, char **);
+void convert_size(char, unsigned *, unsigned *);
+void sort_and_compact_ranges(Range *, unsigned *);
+int range_cmp(const void *, const void *);
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 *, unsigned, unsigned);
+int init_font(Font *, FT_Face, const Range *, unsigned, bool);
+int init_glyphs(Font *, FT_Face, const Range *, bool);
+int copy_bitmap(const FT_Bitmap *, Image *);
+int render_grid(Font *, unsigned, unsigned, unsigned, bool, bool);
+int render_packed(Font *, unsigned, unsigned, bool);
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;
- int margin = 0;
- int padding = 1;
+ Range *ranges = NULL;
+ unsigned n_ranges = 0;
+ 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;
+ bool npot = 0;
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:pim:n:")) != -1)
+ while((i = getopt(argc, argv, "r:s:l:c:o:atvh?ed:pim:n:f")) != -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);
- }
- }
+ ranges = (Range *)realloc(ranges, (++n_ranges)*sizeof(Range));
+ convert_code_point_range('r', &ranges[n_ranges-1]);
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;
invert = 1;
break;
case 'm':
- margin = strtol(optarg, NULL, 0);
+ margin = convert_numeric_option('m', 0);
break;
case 'n':
- padding = strtol(optarg, NULL, 0);
+ padding = convert_numeric_option('n', 0);
+ break;
+ case 'f':
+ npot = 1;
break;
}
}
return 1;
}
+ if(!n_ranges)
+ {
+ ranges = malloc(sizeof(Range));
+ ranges[0].first = 0;
+ ranges[0].last = 255;
+ n_ranges = 1;
+ }
+ else
+ sort_and_compact_ranges(ranges, &n_ranges);
+
font.size = size;
- err = init_font(&font, face, begin, end, autohinter);
+ err = init_font(&font, face, ranges, n_ranges, autohinter);
if(err)
return 1;
+ if(!font.n_glyphs)
+ {
+ fprintf(stderr, "No glyphs found in the requested range\n");
+ return 1;
+ }
+
if(pack)
- err = render_packed(&font, margin, padding);
+ err = render_packed(&font, margin, padding, npot);
else
- err = render_grid(&font, cellw, cellh, cpl, seq);
+ err = render_grid(&font, cellw, cellh, cpl, seq, npot);
if(err)
return 1;
free(font.glyphs);
free(font.kerning);
free(font.image.data);
+ free(ranges);
FT_Done_Face(face);
FT_Done_FreeType(freetype);
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 in packed mode [0]\n"
- " -n Padding between packed glyphs [1]\n"
+ " -m Margin around image edges (packed mode only) [0]\n"
+ " -n Padding between glyphs (packed mode only) [1]\n"
+ " -f Allow non-power-of-two result\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, Range *range)
+{
+ int value;
+ char *ptr;
+
+ if(!strcmp(optarg, "all"))
+ {
+ range->first = 0;
+ range->last = 0x10FFFF;
+ return;
+ }
+
+ value = str_to_code_point(optarg, &ptr);
+ if(value>0 && *ptr==',')
+ {
+ range->first = value;
+ value = str_to_code_point(ptr+1, &ptr);
+ if(value>0 && !*ptr)
+ {
+ range->last = value;
+ return;
+ }
+ }
+
+ printf("Invalid option argument in -%c %s\n", opt, optarg);
+ exit(1);
+}
+
+unsigned str_to_code_point(const char *nptr, char **endptr)
+{
+ if(nptr[0]=='U' && nptr[1]=='+')
+ return strtoul(nptr+2, endptr, 16);
+ else if(nptr[0]&0x80)
+ {
+ unsigned bytes;
+ unsigned code;
+ unsigned i;
+
+ if(endptr)
+ *endptr = (char *)nptr;
+
+ for(bytes=1; (bytes<4 && (nptr[0]&(0x80>>bytes))); ++bytes)
+ if((nptr[bytes]&0xC0)!=0x80)
+ return 0;
+ if(bytes<2)
+ return 0;
+
+ code = nptr[0]&(0x3F>>bytes);
+ for(i=1; i<bytes; ++i)
+ code = (code<<6)|(nptr[i]&0x3F);
+
+ if(endptr)
+ *endptr = (char *)nptr+bytes;
+
+ return code;
+ }
+ else if(isdigit(nptr[0]))
+ return strtoul(nptr, endptr, 0);
+ else
+ {
+ if(endptr)
+ *endptr = (char *)nptr+1;
+ return *nptr;
+ }
+}
+
+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);
+}
+
+void sort_and_compact_ranges(Range *ranges, unsigned *n_ranges)
+{
+ unsigned i, j;
+
+ if(!*n_ranges)
+ return;
+
+ qsort(ranges, *n_ranges, sizeof(Range), &range_cmp);
+ for(i=0, j=1; j<*n_ranges; ++j)
+ {
+ if(ranges[i].last+1>=ranges[j].first)
+ {
+ if(ranges[j].last>ranges[i].last)
+ ranges[i].last = ranges[j].last;
+ }
+ else
+ {
+ ++i;
+ if(i!=j)
+ ranges[i] = ranges[j];
+ }
+ }
+
+ *n_ranges = i+1;
+}
+
+int range_cmp(const void *p1, const void *p2)
+{
+ const Range *r1 = (const Range *)p1;
+ const Range *r2 = (const Range *)p2;
+ if(r1->first!=r2->first)
+ return (r1->first<r2->first ? -1 : 1);
+ else if(r1->last!=r2->last)
+ return (r1->last<r2->last ? -1 : 1);
+ else
+ return 0;
+}
+
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, const Range *ranges, unsigned n_ranges, bool autohinter)
{
unsigned i, j;
unsigned size = 0;
- font->ascent = (face->size->metrics.ascender+63)>>6;
- font->descent = (face->size->metrics.descender+63)>>6;
+ font->ascent = (face->size->metrics.ascender+63)/64;
+ font->descent = (face->size->metrics.descender-63)/64;
if(verbose>=1)
{
font->n_glyphs = 0;
font->glyphs = NULL;
- for(i=first; i<=last; ++i)
+ for(i=0; i<n_ranges; ++i)
+ if(init_glyphs(font, face, &ranges[i], autohinter))
+ return -1;
+
+ if(verbose>=1)
+ printf("Loaded %u glyphs\n", font->n_glyphs);
+
+ font->n_kerning = 0;
+ font->kerning = NULL;
+ for(i=0; i<font->n_glyphs; ++i) for(j=0; j<font->n_glyphs; ++j)
+ if(j!=i)
+ {
+ FT_Vector kerning;
+ FT_Get_Kerning(face, font->glyphs[i].index, font->glyphs[j].index, FT_KERNING_DEFAULT, &kerning);
+
+ /* FreeType documentation says that vertical kerning is practically
+ never used, so we ignore it. */
+ if(kerning.x)
+ {
+ Kerning *kern;
+
+ if(font->n_kerning>=size)
+ {
+ size += 16;
+ font->kerning = (Kerning *)realloc(font->kerning, size*sizeof(Kerning));
+ }
+
+ kern = &font->kerning[font->n_kerning++];
+ kern->left_code = font->glyphs[i].code;
+ kern->right_code = font->glyphs[j].code;
+ kern->distance = kerning.x/64;
+ }
+ }
+
+ if(verbose>=1)
+ printf("Loaded %d kerning pairs\n", font->n_kerning);
+
+ return 0;
+}
+
+int init_glyphs(Font *font, FT_Face face, const Range *range, bool autohinter)
+{
+ unsigned i, j;
+ unsigned size = font->n_glyphs;
+
+ for(i=range->first; i<=range->last; ++i)
{
- unsigned n;
+ unsigned n;
FT_Bitmap *bmp = &face->glyph->bitmap;
- unsigned x, y;
- int flags = 0;
- Glyph *glyph;
+ int flags = 0;
+ Glyph *glyph;
n = FT_Get_Char_Index(face, i);
if(!n)
FT_Render_Glyph(face->glyph, FT_RENDER_MODE_NORMAL);
if(verbose>=2)
- printf(" Char %u: glyph %u, size %dx%d\n", i, n, bmp->width, bmp->rows);
+ {
+ printf(" Code point U+%04X", i);
+ if(i>=0x20 && i<0x7F)
+ printf(" (%c)", i);
+ else if(i>=0xA0 && i<=0x10FFFF)
+ {
+ char utf8[5];
+ unsigned bytes;
+
+ for(bytes=2; i>>(1+bytes*5); ++bytes) ;
+ for(j=0; j<bytes; ++j)
+ utf8[j] = 0x80 | ((i>>((bytes-j-1)*6))&0x3F);
+ utf8[0] |= 0xF0<<(4-bytes);
+ utf8[j] = 0;
- if(bmp->pixel_mode!=FT_PIXEL_MODE_GRAY)
+ printf(" (%s)", utf8);
+ }
+ printf(": glyph %u, size %dx%d\n", n, bmp->width, bmp->rows);
+ }
+
+ if(bmp->pixel_mode!=FT_PIXEL_MODE_GRAY && bmp->pixel_mode!=FT_PIXEL_MODE_MONO)
{
- fprintf(stderr, "Warning: Glyph %u skipped, not grayscale\n", n);
+ fprintf(stderr, "Warning: Glyph %u skipped, incompatible pixel mode\n", n);
continue;
}
glyph = &font->glyphs[font->n_glyphs++];
glyph->index = n;
glyph->code = i;
- glyph->image.w = bmp->width;
- glyph->image.h = bmp->rows;
- glyph->image.data = (char *)malloc(bmp->width*bmp->rows);
- if(!glyph->image.data)
- {
- fprintf(stderr, "Cannot allocate %d bytes of memory for glyph\n", bmp->width*bmp->rows);
- return -1;
- }
glyph->offset_x = face->glyph->bitmap_left;
glyph->offset_y = face->glyph->bitmap_top-bmp->rows;
glyph->advance = (int)(face->glyph->advance.x+32)/64;
/* Copy the glyph image since FreeType uses a global buffer, which would
be overwritten by the next glyph. Negative pitch means the scanlines
start from the bottom. */
- if(bmp->pitch<0)
- {
- for(y=0; y<bmp->rows; ++y) for(x=0; x<bmp->width; ++x)
- glyph->image.data[x+(glyph->image.h-1-y)*glyph->image.w] = bmp->buffer[x-y*bmp->pitch];
- }
- else
- {
- for(y=0; y<bmp->rows; ++y) for(x=0; x<bmp->width; ++x)
- glyph->image.data[x+y*glyph->image.w] = bmp->buffer[x+y*bmp->pitch];
- }
+ if(copy_bitmap(bmp, &glyph->image))
+ return -1;
}
- if(verbose>=1)
- printf("Loaded %u glyphs\n", font->n_glyphs);
+ return 0;
+}
- size = 0;
- font->n_kerning = 0;
- font->kerning = NULL;
- for(i=0; i<font->n_glyphs; ++i) for(j=0; j<font->n_glyphs; ++j)
- if(j!=i)
- {
- FT_Vector kerning;
- FT_Get_Kerning(face, font->glyphs[i].index, font->glyphs[j].index, FT_KERNING_DEFAULT, &kerning);
+int copy_bitmap(const FT_Bitmap *bmp, Image *image)
+{
+ unsigned x, y;
+ unsigned char *src;
+ char *dst;
- /* FreeType documentation says that vertical kerning is practically
- never used, so we ignore it. */
- if(kerning.x)
- {
- Kerning *kern;
+ image->w = bmp->width;
+ image->h = bmp->rows;
+ if(!image->w || !image->h)
+ {
+ image->data = NULL;
+ return 0;
+ }
- if(font->n_kerning>=size)
- {
- size += 16;
- font->kerning = (Kerning *)realloc(font->kerning, size*sizeof(Kerning));
- }
+ image->data = (char *)malloc(image->w*image->h);
+ if(!image->data)
+ {
+ fprintf(stderr, "Cannot allocate %d bytes of memory for glyph\n", image->w*image->h);
+ return -1;
+ }
- kern = &font->kerning[font->n_kerning++];
- kern->left_code = font->glyphs[i].code;
- kern->right_code = font->glyphs[j].code;
- kern->distance = kerning.x/64;
- }
+ if(bmp->pitch<0)
+ src = bmp->buffer+(bmp->rows-1)*-bmp->pitch;
+ else
+ src = bmp->buffer;
+ dst = image->data;
+
+ for(y=0; y<bmp->rows; ++y)
+ {
+ if(bmp->pixel_mode==FT_PIXEL_MODE_MONO)
+ {
+ for(x=0; x<bmp->width; ++x)
+ dst[x] = ((src[x/8]&(0x80>>(x%8))) ? 0xFF : 0x00);
+ }
+ else
+ {
+ for(x=0; x<bmp->width; ++x)
+ dst[x] = src[x];
}
- if(verbose>=1)
- printf("Loaded %d kerning pairs\n", font->n_kerning);
+ src += bmp->pitch;
+ dst += image->w;
+ }
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, bool npot)
{
unsigned i;
- int top = 0, bot = 0;
+ int top = 0, bot = 0;
unsigned first, last;
unsigned maxw = 0, maxh = 0;
first -= first%cpl;
last = font->glyphs[font->n_glyphs-1].code;
- font->image.w = round_to_pot(cpl*cellw);
+ font->image.w = cpl*cellw;
+ if(!npot)
+ font->image.w = round_to_pot(font->image.w);
if(seq)
- font->image.h = round_to_pot((font->n_glyphs+cpl-1)/cpl*cellh);
+ font->image.h = (font->n_glyphs+cpl-1)/cpl*cellh;
else
- font->image.h = round_to_pot((last-first+cpl)/cpl*cellh);
+ font->image.h = (last-first+cpl)/cpl*cellh;
+ if(!npot)
+ font->image.h = round_to_pot(font->image.h);
font->image.data = (char *)alloc_image_data(font->image.w, font->image.h);
if(!font->image.data)
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, unsigned margin, unsigned padding)
+int render_packed(Font *font, unsigned margin, unsigned padding, bool npot)
{
unsigned i;
- size_t area = 0;
- char *used_glyphs;
+ size_t area = 0;
+ char *used_glyphs;
unsigned *used_pixels;
unsigned cx = margin, cy;
unsigned used_h = 0;
if(font->image.h<=font->image.w)
break;
}
- font->image.h = round_to_pot(font->image.h);
+ if(!npot)
+ font->image.h = round_to_pot(font->image.h);
/* Allocate arrays for storing the image and keeping track of used pixels and
glyphs. Since glyphs are rectangular and the image is filled starting from
{
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. */
+ /* 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;
/* Trim the image to the actually used size, in case the original estimate
was too pessimistic. */
- font->image.h = round_to_pot(used_h);
+ font->image.h = used_h;
+ if(!npot)
+ font->image.h = round_to_pot(font->image.h);
free(used_glyphs);
free(used_pixels);
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