Ejemplo n.º 1
0
static cairo_test_status_t
check_font_extents (const cairo_test_context_t *ctx, cairo_t *cr, const char *comment)
{
    cairo_font_extents_t font_extents, ref_font_extents = {11, 2, 13, 6, 0};
    cairo_status_t status;

    memset (&font_extents, 0xff, sizeof (cairo_font_extents_t));
    cairo_font_extents (cr, &font_extents);

    status = cairo_status (cr);
    if (status)
	return cairo_test_status_from_status (ctx, status);

    if (! font_extents_equal (&font_extents, &ref_font_extents)) {
	cairo_test_log (ctx, "Error: %s: cairo_font_extents(); extents (%g, %g, %g, %g, %g)\n",
			comment,
		        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;
}
Ejemplo n.º 2
0
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
    const cairo_test_context_t *ctx = cairo_test_get_context (cr);
    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",
			    CAIRO_FONT_SLANT_NORMAL,
			    CAIRO_FONT_WEIGHT_NORMAL);
    cairo_set_font_size (cr, 16);

    cairo_move_to (cr, 10, 25);
    cairo_show_text (cr, NULL);
    cairo_show_text (cr, "");
    cairo_show_glyphs (cr, NULL, 0);
    cairo_show_glyphs (cr, (void*)8, 0);

    cairo_move_to (cr, 10, 55);
    cairo_text_path (cr, NULL);
    cairo_text_path (cr, "");
    cairo_glyph_path (cr, (void*)8, 0);
    cairo_fill (cr);

    memset (&nil_extents, 0, sizeof (cairo_text_extents_t));

    memset (&extents, 0xff, sizeof (cairo_text_extents_t));
    cairo_text_extents (cr, "", &extents);
    if (! text_extents_equal (&extents, &nil_extents)) {
	cairo_test_log (ctx, "Error: cairo_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);
	return CAIRO_TEST_FAILURE;
    }

    memset (&extents, 0xff, sizeof (cairo_text_extents_t));
    cairo_text_extents (cr, NULL, &extents);
    if (! text_extents_equal (&extents, &nil_extents)) {
	cairo_test_log (ctx, "Error: cairo_text_extents(NULL); 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 (&extents, 0xff, sizeof (cairo_text_extents_t));
    cairo_glyph_extents (cr, (void*)8, 0, &extents);
    if (! text_extents_equal (&extents, &nil_extents)) {
	cairo_test_log (ctx, "Error: cairo_glyph_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);
	return CAIRO_TEST_FAILURE;
    }

    scaled_font = cairo_get_scaled_font (cr);

    memset (&extents, 0xff, sizeof (cairo_text_extents_t));
    cairo_scaled_font_text_extents (scaled_font, "", &extents);
    if (! text_extents_equal (&extents, &nil_extents)) {
	cairo_test_log (ctx, "Error: 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);
	return CAIRO_TEST_FAILURE;
    }

    memset (&extents, 0xff, sizeof (cairo_text_extents_t));
    cairo_scaled_font_text_extents (scaled_font, NULL, &extents);
    if (! text_extents_equal (&extents, &nil_extents)) {
	cairo_test_log (ctx, "Error: cairo_scaled_font_text_extents(NULL); 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 (&extents, 0xff, sizeof (cairo_text_extents_t));
    cairo_scaled_font_glyph_extents (scaled_font, (void*)8, 0, &extents);
    if (! text_extents_equal (&extents, &nil_extents)) {
	cairo_test_log (ctx, "Error: cairo_scaled_font_glyph_extents(NULL); 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;
    }

    /* 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 (ctx, "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 (ctx, "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 (ctx, "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;
}