freetype/cmd/print-glyph-points/main.c

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/*
gcc main.c -I/usr/include/freetype2 -lfreetype && ./a.out 12 ../../testdata/luxisr.ttf with_hinting
*/
#include <stdio.h>
#include <ft2build.h>
#include FT_FREETYPE_H
void usage(char** argv) {
fprintf(stderr, "usage: %s font_size font_file [with_hinting|sans_hinting]\n", argv[0]);
}
int main(int argc, char** argv) {
FT_Error error;
FT_Library library;
FT_Face face;
FT_Glyph_Metrics* m;
FT_Outline* o;
FT_Int major, minor, patch;
int i, j, font_size, no_hinting;
if (argc != 4) {
usage(argv);
return 1;
}
font_size = atoi(argv[1]);
if (font_size <= 0) {
fprintf(stderr, "invalid font_size\n");
usage(argv);
return 1;
}
if (!strcmp(argv[3], "with_hinting")) {
no_hinting = 0;
} else if (!strcmp(argv[3], "sans_hinting")) {
no_hinting = 1;
} else {
fprintf(stderr, "neither \"with_hinting\" nor \"sans_hinting\"\n");
usage(argv);
return 1;
};
error = FT_Init_FreeType(&library);
if (error) {
fprintf(stderr, "FT_Init_FreeType: error #%d\n", error);
return 1;
}
FT_Library_Version(library, &major, &minor, &patch);
printf("freetype version %d.%d.%d\n", major, minor, patch);
error = FT_New_Face(library, argv[2], 0, &face);
if (error) {
fprintf(stderr, "FT_New_Face: error #%d\n", error);
return 1;
}
error = FT_Set_Char_Size(face, 0, font_size*64, 0, 0);
if (error) {
fprintf(stderr, "FT_Set_Char_Size: error #%d\n", error);
return 1;
}
for (i = 0; i < face->num_glyphs; i++) {
error = FT_Load_Glyph(face, i, no_hinting ? FT_LOAD_NO_HINTING : FT_LOAD_DEFAULT);
if (error) {
fprintf(stderr, "FT_Load_Glyph: glyph %d: error #%d\n", i, error);
return 1;
}
if (face->glyph->format != FT_GLYPH_FORMAT_OUTLINE) {
fprintf(stderr, "glyph format for glyph %d is not FT_GLYPH_FORMAT_OUTLINE\n", i);
return 1;
}
m = &face->glyph->metrics;
/* Print what Go calls the AdvanceWidth, and then: XMin, YMin, XMax, YMax. */
printf("%ld %ld %ld %ld %ld;",
m->horiAdvance,
m->horiBearingX,
m->horiBearingY - m->height,
m->horiBearingX + m->width,
m->horiBearingY);
/* Print the glyph points. */
o = &face->glyph->outline;
for (j = 0; j < o->n_points; j++) {
if (j != 0) {
printf(", ");
}
printf("%ld %ld %d", o->points[j].x, o->points[j].y, o->tags[j] & 0x01);
}
printf("\n");
}
return 0;
}