[gtk/wip/matthiasc/lottie-stroke: 50/55] Add dashes to the curve2 test

[Matthias Clasen <matthiasc src gnome org>]

commit 1d41a06927aad855be394a98aca499f0852462c8
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Dec 10 22:39:41 2020 -0500

    Add dashes to the curve2 test

 tests/curve2.c | 39 +++++++++++++++++++++++++++++++++++----
 1 file changed, 35 insertions(+), 4 deletions(-)
---
diff --git a/tests/curve2.c b/tests/curve2.c
index 0edd0081d7..c752f5609d 100644
--- a/tests/curve2.c
+++ b/tests/curve2.c
@@ -122,10 +122,6 @@ demo_widget_snapshot (GtkWidget   *widget,
       graphene_rect_union (&b, &bounds, &bounds);
     }
 
-  g_print ("bounds: %f %f %f %f\n",
-           bounds.origin.x, bounds.origin.y,
-           bounds.size.width, bounds.size.height);
-
   gtk_snapshot_save (snapshot);
 
   gtk_snapshot_translate (snapshot, &GRAPHENE_POINT_INIT (20 - bounds.origin.x, 20 - bounds.origin.y));
@@ -532,6 +528,36 @@ line_width_changed (GtkSpinButton *spin,
   update_outline_path (self);
 }
 
+static void
+dash_changed (GtkEntry   *entry,
+              DemoWidget *self)
+{
+  const char *text;
+  char **s;
+  float dash[20];
+  int i;
+
+  text = gtk_editable_get_text (GTK_EDITABLE (entry));
+  s = g_strsplit (text, " ", -1);
+  for (i = 0; s[i]; i++)
+    {
+      char *end;
+      float f;
+
+      f = g_strtod (s[i], &end);
+      if (*end != '\0')
+        return;
+
+      dash[i] = f;
+    }
+
+  g_strfreev (s);
+
+  gsk_stroke_set_dash (self->stroke, dash, i);
+
+  update_stroke_path (self);
+}
+
 int
 main (int argc, char *argv[])
 {
@@ -615,6 +641,11 @@ main (int argc, char *argv[])
   g_signal_connect (spin, "value-changed", G_CALLBACK (line_width_changed), demo);
   gtk_grid_attach (GTK_GRID (grid), spin, 1, 8, 1, 1);
 
+  gtk_grid_attach (GTK_GRID (grid), gtk_label_new ("Dashes:"), 0, 9, 1, 1);
+  entry = gtk_entry_new ();
+  g_signal_connect (entry, "changed", G_CALLBACK (dash_changed), demo);
+  gtk_grid_attach (GTK_GRID (grid), entry, 1, 9, 1, 1);
+
   entry = gtk_entry_new ();
   g_signal_connect (entry, "activate", G_CALLBACK (activate), demo);
   gtk_box_append (GTK_BOX (box), entry);