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[hb-view] Add --annotate 

Currently it only marks glyph origins.
This commit is contained in:
Behdad Esfahbod 2011-05-18 10:17:02 -04:00
parent b8d76dd74e
commit e609aeb1e2
1 changed files with 19 additions and 1 deletions
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20
src/hb-view.cc
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@ -62,6 +62,7 @@ static const char *script = NULL;
static const char *language = NULL;
static hb_feature_t *features = NULL;
static unsigned int num_features;
static hb_bool_t annotate = FALSE;
static hb_bool_t debug = FALSE;
/* Ugh, global vars. Ugly, but does the job */
@ -99,6 +100,7 @@ parse_opts (int argc, char **argv)
{
int option_index = 0, c;
static struct option long_options[] = {
{"annotate", 0, &annotate, TRUE},
{"background", 1, 0, 'B'},
{"debug", 0, &debug, TRUE},
{"direction", 1, 0, 'd'},
@ -411,7 +413,7 @@ create_context (void)
fr = fg = fb = 0; fa = 255;
sscanf (fore + (*fore=='#'), "%2x%2x%2x%2x", &fr, &fg, &fb, &fa);
if (ba == 255 && fa == 255 && br == bg && bg == bb && fr == fg && fg == fb) {
if (!annotate && ba == 255 && fa == 255 && br == bg && bg == bb && fr == fg && fg == fb) {
/* grayscale. use A8 surface */
surface = cairo_image_surface_create (CAIRO_FORMAT_A8, width, height);
cr = cairo_create (surface);
@ -482,6 +484,22 @@ draw (void)
width = MAX (width, extents.x_advance);
cairo_save (cr);
cairo_translate (cr, x, y);
if (annotate) {
unsigned int i;
cairo_save (cr);
/* Draw actual glyph origins */
cairo_set_source_rgba (cr, 1., 0., 0., .5);
cairo_set_line_width (cr, 5);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
for (i = 0; i < num_glyphs; i++) {
cairo_move_to (cr, glyphs[i].x, glyphs[i].y);
cairo_rel_line_to (cr, 0, 0);
}
cairo_stroke (cr);
cairo_restore (cr);
}
cairo_show_glyphs (cr, glyphs, num_glyphs);
cairo_restore (cr);
y += ceil (font_extents.height - ceil (font_extents.ascent));