text-antialias-gray.c [plain text]
#include "cairo-test.h"
#define WIDTH 31
#define HEIGHT 22
#define TEXT_SIZE 12
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_text_extents_t extents;
cairo_font_options_t *font_options;
const char black[] = "black", blue[] = "blue";
cairo_save (cr);
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
cairo_paint (cr);
cairo_restore (cr);
cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Sans",
CAIRO_FONT_SLANT_NORMAL,
CAIRO_FONT_WEIGHT_NORMAL);
cairo_set_font_size (cr, TEXT_SIZE);
font_options = cairo_font_options_create ();
cairo_get_font_options (cr, font_options);
cairo_font_options_set_antialias (font_options, CAIRO_ANTIALIAS_GRAY);
cairo_set_font_options (cr, font_options);
cairo_font_options_destroy (font_options);
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_text_extents (cr, black, &extents);
cairo_move_to (cr, -extents.x_bearing, -extents.y_bearing);
cairo_show_text (cr, black);
cairo_translate (cr, 0, -extents.y_bearing + 1);
cairo_set_source_rgb (cr, 0, 0, 1);
cairo_text_extents (cr, blue, &extents);
cairo_move_to (cr, -extents.x_bearing, -extents.y_bearing);
cairo_show_text (cr, blue);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (text_antialias_gray,
"Tests text rendering with grayscale antialiasing",
"text",
"target=raster",
WIDTH, HEIGHT,
NULL, draw)