[librsvg/rustification] Use new function rsvg_get_normalized_stroke_width() instead of doing this by hand everywhere

[Federico Mena Quintero <federico src gnome org>]

commit da4a2a7cdc38e4c2b473997787f828219a7ea91e
Author: Federico Mena Quintero <federico gnome org>
Date:   Tue Nov 8 18:51:30 2016 -0600

    Use new function rsvg_get_normalized_stroke_width() instead of doing this by hand everywhere

 rsvg-base.c       |    8 ++++++++
 rsvg-cairo-draw.c |    2 +-
 rsvg-marker.c     |    2 +-
 rsvg-private.h    |    2 ++
 4 files changed, 12 insertions(+), 2 deletions(-)
---
diff --git a/rsvg-base.c b/rsvg-base.c
index 1c0e187..24338b5 100644
--- a/rsvg-base.c
+++ b/rsvg-base.c
@@ -2165,6 +2165,14 @@ rsvg_render_surface (RsvgDrawingCtx * ctx, cairo_surface_t *surface, double x, d
     ctx->render->render_surface (ctx, surface, x, y, w, h);
 }
 
+double
+rsvg_get_normalized_stroke_width (RsvgDrawingCtx *ctx)
+{
+    RsvgState *state = rsvg_current_state (ctx);
+
+    return _rsvg_css_normalize_length (&state->stroke_width, ctx, LENGTH_DIR_BOTH);
+}
+
 void
 rsvg_add_clipping_rect (RsvgDrawingCtx * ctx, double x, double y, double w, double h)
 {
diff --git a/rsvg-cairo-draw.c b/rsvg-cairo-draw.c
index 89044ac..2425074 100644
--- a/rsvg-cairo-draw.c
+++ b/rsvg-cairo-draw.c
@@ -384,7 +384,7 @@ rsvg_cairo_create_pango_context (RsvgDrawingCtx * ctx)
 static void
 setup_cr_for_stroke (cairo_t *cr, RsvgDrawingCtx *ctx, RsvgState *state)
 {
-    cairo_set_line_width (cr, _rsvg_css_normalize_length (&state->stroke_width, ctx, LENGTH_DIR_BOTH));
+    cairo_set_line_width (cr, rsvg_get_normalized_stroke_width (ctx));
     cairo_set_miter_limit (cr, state->miter_limit);
     cairo_set_line_cap (cr, (cairo_line_cap_t) state->cap);
     cairo_set_line_join (cr, (cairo_line_join_t) state->join);
diff --git a/rsvg-marker.c b/rsvg-marker.c
index b74c8ce..0b5a406 100644
--- a/rsvg-marker.c
+++ b/rsvg-marker.c
@@ -219,7 +219,7 @@ rsvg_render_markers (RsvgDrawingCtx *ctx,
 
     state = rsvg_current_state (ctx);
 
-    linewidth = _rsvg_css_normalize_length (&state->stroke_width, ctx, LENGTH_DIR_BOTH);
+    linewidth = rsvg_get_normalized_stroke_width (ctx);
 
     rsvg_rust_render_markers (ctx,
                               builder,
diff --git a/rsvg-private.h b/rsvg-private.h
index 93514b5..797fc08 100644
--- a/rsvg-private.h
+++ b/rsvg-private.h
@@ -387,6 +387,8 @@ G_GNUC_INTERNAL
 void rsvg_render_surface        (RsvgDrawingCtx * ctx, cairo_surface_t *surface,
                                  double x, double y, double w, double h);
 G_GNUC_INTERNAL
+double rsvg_get_normalized_stroke_width (RsvgDrawingCtx *ctx);
+G_GNUC_INTERNAL
 void rsvg_render_free           (RsvgRender * render);
 G_GNUC_INTERNAL
 void rsvg_add_clipping_rect     (RsvgDrawingCtx * ctx, double x, double y, double w, double h);