caps-joins-curve.c [plain text]
#include "cairo-test.h"
#define LINE_WIDTH 10.
#define SIZE (5 * LINE_WIDTH)
#define PAD (3 * LINE_WIDTH)
static void
make_path (cairo_t *cr)
{
cairo_move_to (cr, 0, 0);
cairo_rel_curve_to (cr,
-SIZE/4, SIZE/3,
-SIZE/4, SIZE/3,
0, SIZE);
cairo_rel_curve_to (cr,
SIZE/3, -SIZE/4,
SIZE/3, -SIZE/4,
SIZE, 0);
cairo_close_path (cr);
cairo_move_to (cr, 5 * LINE_WIDTH, 3 * LINE_WIDTH);
cairo_rel_curve_to (cr,
0, -3 * LINE_WIDTH,
0, -3 * LINE_WIDTH,
-3 * LINE_WIDTH, -3 * LINE_WIDTH);
}
static void
draw_caps_joins (cairo_t *cr)
{
cairo_save (cr);
cairo_translate (cr, PAD, PAD);
make_path (cr);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_BEVEL);
cairo_stroke (cr);
cairo_translate (cr, SIZE + PAD, 0.);
make_path (cr);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
cairo_stroke (cr);
cairo_translate (cr, SIZE + PAD, 0.);
make_path (cr);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_MITER);
cairo_stroke (cr);
cairo_restore (cr);
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_save (cr);
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
cairo_paint (cr);
cairo_restore (cr);
cairo_set_line_width (cr, LINE_WIDTH);
draw_caps_joins (cr);
cairo_translate (cr, 0, height);
cairo_scale (cr, 1, -1);
draw_caps_joins (cr);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (caps_joins_curve,
"Test caps and joins on curves",
"stroke cap join",
NULL,
3 * (PAD + SIZE) + PAD,
2 * (PAD + SIZE) + PAD,
NULL, draw)