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[test/text-zero-len] Test text and font extents for font size 0

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This commit is contained in:
Behdad Esfahbod 2008-01-25 07:14:07 -05:00
parent 83bd590760
commit 20c8531243
1 changed files with 50 additions and 2 deletions
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52
test/text-zero-len.c
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@ -66,11 +66,22 @@ text_extents_equal (const cairo_text_extents_t *A,
A->y_advance == B->y_advance;
}
static cairo_bool_t
font_extents_equal (const cairo_font_extents_t *A,
const cairo_font_extents_t *B)
{
return A->ascent == B->ascent &&
A->descent == B->descent &&
A->height == B->height &&
A->max_x_advance == B->max_x_advance &&
A->max_y_advance == B->max_y_advance;
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_text_extents_t nil_extents;
cairo_text_extents_t extents;
cairo_text_extents_t extents, nil_extents;
cairo_font_extents_t font_extents, nil_font_extents;
cairo_scaled_font_t *scaled_font;
cairo_select_font_face (cr, "Bitstream Vera Sans",
@ -154,6 +165,43 @@ draw (cairo_t *cr, int width, int height)
return CAIRO_TEST_FAILURE;
}
/* Lets also try font size 0 while here */
cairo_set_font_size (cr, 0);
memset (&extents, 0xff, sizeof (cairo_text_extents_t));
cairo_text_extents (cr, "test", &extents);
if (! text_extents_equal (&extents, &nil_extents)) {
cairo_test_log ("Error: cairo_set_font_size(0); cairo_text_extents(\"test\"); extents (%g, %g, %g, %g, %g, %g)\n",
extents.x_bearing, extents.y_bearing,
extents.width, extents.height,
extents.x_advance, extents.y_advance);
return CAIRO_TEST_FAILURE;
}
memset (&nil_font_extents, 0, sizeof (cairo_font_extents_t));
memset (&font_extents, 0xff, sizeof (cairo_font_extents_t));
cairo_font_extents (cr, &font_extents);
if (! font_extents_equal (&font_extents, &nil_font_extents)) {
cairo_test_log ("Error: cairo_set_font_size(0); cairo_font_extents(); extents (%g, %g, %g, %g, %g)\n",
font_extents.ascent, font_extents.descent,
font_extents.height,
font_extents.max_x_advance, font_extents.max_y_advance);
return CAIRO_TEST_FAILURE;
}
scaled_font = cairo_get_scaled_font (cr);
memset (&font_extents, 0xff, sizeof (cairo_font_extents_t));
cairo_scaled_font_extents (scaled_font, &font_extents);
if (! font_extents_equal (&font_extents, &nil_font_extents)) {
cairo_test_log ("Error: cairo_set_font_size(0); cairo_scaled_font_extents(); extents (%g, %g, %g, %g, %g)\n",
font_extents.ascent, font_extents.descent,
font_extents.height,
font_extents.max_x_advance, font_extents.max_y_advance);
return CAIRO_TEST_FAILURE;
}
return CAIRO_TEST_SUCCESS;
}