Test closed dashed paths where the first and last sub-path do not join.

This tests the situation reported by Keith Wells where the start point of a
closed dashed path was not being properly capped.

1 files changed, 27 insertions, 18 deletions

diff --git a/test/dash-caps-joins.c b/test/dash-caps-joins.c
index 722a59d2..370d05dd 100644
--- a/test/dash-caps-joins.c
+++ b/test/dash-caps-joins.c
@@ -41,7 +41,7 @@ cairo_test_t test = {
     "dash-caps-joins",
     "Test caps and joins when dashing",
     3 * (PAD + SIZE) + PAD,
-    PAD + SIZE + PAD,
+    PAD + SIZE + PAD + SIZE + PAD,
     draw
 };
 
@@ -62,6 +62,8 @@ static cairo_test_status_t
 draw (cairo_t *cr, int width, int height)
 {
     double dash[] = {LINE_WIDTH, 1.5 * LINE_WIDTH};
+    double dash_offset = -2 * LINE_WIDTH;
+    int i;
 
     /* We draw in the default black, so paint white first. */
     cairo_save (cr);
@@ -69,29 +71,36 @@ draw (cairo_t *cr, int width, int height)
     cairo_paint (cr);
     cairo_restore (cr);
 
-    cairo_set_line_width (cr, LINE_WIDTH);
-    cairo_set_dash (cr, dash, sizeof(dash)/sizeof(dash[0]), - 2 * LINE_WIDTH);
+    for (i=0; i<2; i++) {
+	cairo_save (cr);
+	cairo_set_line_width (cr, LINE_WIDTH);
+	cairo_set_dash (cr, dash, sizeof(dash)/sizeof(dash[0]), dash_offset);
 
-    cairo_translate (cr, PAD, PAD);
+	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);
+	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.);
+	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);
+	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.);
+	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);
+	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);
+	cairo_translate (cr, 0., SIZE + PAD);
+	dash_offset = 0;
+    }
 
     return CAIRO_TEST_SUCCESS;
 }