vg_common_svg: Apply node opacity to stroke color

Summary:
  When an object to be converted to a stroke or
  path uses "opacity" attribute, opacity is also applied.

Test Plan:
[SVG]
<?xml version="1.0" encoding="UTF-8"?>
<svg width="40px" height="40px" viewBox="0 0 40 40" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
    <!-- Generator: Sketch 52.6 (67491) - http://www.bohemiancoding.com/sketch -->
        <rect fill="#FF0000" opacity="0" x="0" y="0" width="40" height="40"></rect>
        <path d="M12,20 L25,8 L12,20 Z M12,20 L25,32 L12,20 Z"
              id="Combined-Shape"
              stroke="#FFFFFF"
              stroke-width="2"
              opacity="0.12"
              stroke-linecap="round"
              stroke-linejoin="round" fill-rule="nonzero"></path>
</svg>

[Code]
int main(int argc, char **argv)
{
   setenv("ECTOR_BACKEND", "default", 1);
   elm_init(argc, argv);

   Evas_Object *win = elm_win_util_standard_add(NULL, "test");
   evas_object_smart_callback_add(win, "delete,request", win_del, 0);
   elm_win_autodel_set(win, 1);

   Evas *evas = evas_object_evas_get(win);
   Evas_Object *vg = evas_object_vg_add(evas);
   evas_object_show(vg);
   Evas_Object *container = evas_vg_container_add(vg);
   evas_object_vg_root_node_set(vg, container);

   Evas_Object *svg = efl_add(EFL_CANVAS_VG_OBJECT_CLASS, container);
   efl_file_simple_load(svg, "./i_arrow_l_disable.svg", NULL);
   efl_gfx_entity_size_set(svg, EINA_SIZE2D(600, 600));
   efl_gfx_entity_visible_set(svg, EINA_TRUE);
   evas_object_size_hint_weight_set(svg, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   evas_object_size_hint_align_set(svg, EVAS_HINT_FILL, EVAS_HINT_FILL);

   elm_win_resize_object_add(win, vg);
   evas_object_resize(win, 600, 600);
   evas_object_show(win);
   elm_run();
   elm_shutdown();

   return 0;
}

Reviewers: Hermet, smohanty, kimcinoo

Reviewed By: Hermet

Subscribers: cedric, #reviewers, #committers

Tags: #efl

Differential Revision: https://phab.enlightenment.org/D9620

1 files changed, 9 insertions, 0 deletions

diff --git a/src/static_libs/vg_common/vg_common_svg.c b/src/static_libs/vg_common/vg_common_svg.c
index e3866e2018..5f8398d44b 100644
--- a/src/static_libs/vg_common/vg_common_svg.c
+++ b/src/static_libs/vg_common/vg_common_svg.c
@@ -784,6 +784,15 @@ _apply_vg_property(Svg_Node *node, Efl_VG *vg, Efl_VG *parent, Vg_File_Data *vg_
         efl_gfx_shape_stroke_color_set(vg, style->stroke.paint.r, style->stroke.paint.g,
                                        style->stroke.paint.b, style->stroke.opacity);
      }
+
+   //apply node opacity to stroke color
+   if (style->opacity < 255)
+     {
+        int r, g, b, a;
+        efl_gfx_shape_stroke_color_get(vg, &r, &g, &b, &a);
+        float fa = ((float) style->opacity / 255);
+        efl_gfx_shape_stroke_color_set(vg, ((float) r) * fa, ((float) g) * fa, ((float) b) * fa, ((float) a) * fa);
+     }
 }
 
 static void