[librsvg] rsvg_state_get_stop_opacity(): New function to expose this property to Rust

[Federico Mena Quintero <federico src gnome org>]

commit b267dca3ca927a06a37fd02b13fd1820e8adfa1c
Author: Federico Mena Quintero <federico gnome org>
Date:   Wed May 31 12:58:18 2017 -0500

    rsvg_state_get_stop_opacity(): New function to expose this property to Rust

 rsvg-styles.c |   10 ++++++++++
 rsvg-styles.h |    3 +++
 2 files changed, 13 insertions(+), 0 deletions(-)
---
diff --git a/rsvg-styles.c b/rsvg-styles.c
index 9e7502f..e49cc2c 100644
--- a/rsvg-styles.c
+++ b/rsvg-styles.c
@@ -1746,6 +1746,16 @@ rsvg_state_get_stop_color (RsvgState *state)
     }
 }
 
+RsvgOpacitySpec *
+rsvg_state_get_stop_opacity (RsvgState *state)
+{
+    if (state->has_stop_opacity) {
+        return &state->stop_opacity;
+    } else {
+        return NULL;
+    }
+}
+
 guint32
 rsvg_state_get_current_color (RsvgState *state)
 {
diff --git a/rsvg-styles.h b/rsvg-styles.h
index 2466ed6..45ff753 100644
--- a/rsvg-styles.h
+++ b/rsvg-styles.h
@@ -245,6 +245,9 @@ G_GNUC_INTERNAL
 RsvgCssColorSpec *rsvg_state_get_stop_color (RsvgState *state);
 
 G_GNUC_INTERNAL
+RsvgOpacitySpec *rsvg_state_get_stop_opacity (RsvgState *state);
+
+G_GNUC_INTERNAL
 guint32 rsvg_state_get_current_color (RsvgState *state);
 
 G_END_DECLS