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[test] Test that cairo_text_extents() and cairo_scaled_font_text_extents() match

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in results.
This commit is contained in:
Behdad Esfahbod 2008-01-25 07:02:25 -05:00
parent 4c432b0955
commit 83bd590760
1 changed files with 30 additions and 1 deletions
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31
test/font-matrix-translation.c
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@ -38,15 +38,44 @@ cairo_test_t test = {
draw
};
static cairo_bool_t
text_extents_equal (const cairo_text_extents_t *A,
const cairo_text_extents_t *B)
{
return A->x_bearing == B->x_bearing &&
A->y_bearing == B->y_bearing &&
A->width == B->width &&
A->height == B->height &&
A->x_advance == B->x_advance &&
A->y_advance == B->y_advance;
}
static void
box_text (cairo_t *cr, const char *utf8, double x, double y)
{
double line_width;
cairo_text_extents_t extents;
cairo_text_extents_t extents = {}, scaled_extents = {};
cairo_scaled_font_t *scaled_font;
cairo_save (cr);
cairo_text_extents (cr, utf8, &extents);
scaled_font = cairo_get_scaled_font (cr);
cairo_scaled_font_text_extents (scaled_font, TEXT, &scaled_extents);
if (! text_extents_equal (&extents, &scaled_extents)) {
cairo_test_log ("Error: extents differ when they shouldn't:\n"
"cairo_text_extents(); extents (%g, %g, %g, %g, %g, %g)\n",
"cairo_scaled_font_text_extents(); extents (%g, %g, %g, %g, %g, %g)\n",
extents.x_bearing, extents.y_bearing,
extents.width, extents.height,
extents.x_advance, extents.y_advance,
scaled_extents.x_bearing, scaled_extents.y_bearing,
scaled_extents.width, scaled_extents.height,
scaled_extents.x_advance, scaled_extents.y_advance);
return CAIRO_TEST_FAILURE;
}
line_width = cairo_get_line_width (cr);
cairo_rectangle (cr,
x + extents.x_bearing - line_width / 2,