From bdce27dd7bb9e165bb5c982585dcbf1284cf7116 Mon Sep 17 00:00:00 2001
From: Pietro Vertechi <pietro.vertechi@neuro.fchampalimaud.org>
Date: Sun, 20 Nov 2016 15:20:59 +0000
Subject: [PATCH] Implemented legend position in plotly

---
 src/args.jl            |  1 +
 src/backends/plotly.jl | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/src/args.jl b/src/args.jl
index ab27323b3..119dd1252 100644
--- a/src/args.jl
+++ b/src/args.jl
@@ -857,6 +857,7 @@ function convertLegendValue(val::Symbol)
 end
 convertLegendValue(val::Bool) = val ? :best : :none
 convertLegendValue(val::Void) = :none
+convertLegendValue{S<:Real, T<:Real}(v::Tuple{S,T}) = v
 convertLegendValue(v::AbstractArray) = map(convertLegendValue, v)
 
 # -----------------------------------------------------------------------------
diff --git a/src/backends/plotly.jl b/src/backends/plotly.jl
index 2b3528a0c..c5c8dedfa 100644
--- a/src/backends/plotly.jl
+++ b/src/backends/plotly.jl
@@ -93,6 +93,20 @@ end
 
 # ----------------------------------------------------------------
 
+const _plotly_legend_pos = KW(
+    :right => [1., 0.5],
+    :left => [0., 0.5],
+    :top => [0.5, 1.],
+    :bottom => [0.5, 0.],
+    :bottomleft => [0., 0.],
+    :bottomright => [1., 0.],
+    :topright => [1., 1.],
+    :topleft => [0., 1.]
+    )
+
+plotly_legend_pos(pos::Symbol) = get(_plotly_legend_pos, pos, [1.,1.])
+plotly_legend_pos{S<:Real, T<:Real}(v::Tuple{S,T}) = v
+
 function plotly_font(font::Font, color = font.color)
     KW(
         :family => font.family,
@@ -101,6 +115,7 @@ function plotly_font(font::Font, color = font.color)
     )
 end
 
+
 function plotly_annotation_dict(x, y, val; xref="paper", yref="paper")
     KW(
         :text => val,
@@ -293,11 +308,14 @@ function plotly_layout(plt::Plot)
 
         # legend
         d_out[:showlegend] = sp[:legend] != :none
+        xpos,ypos = plotly_legend_pos(sp[:legend])
         if sp[:legend] != :none
             d_out[:legend] = KW(
                 :bgcolor  => rgba_string(sp[:background_color_legend]),
                 :bordercolor => rgba_string(sp[:foreground_color_legend]),
                 :font     => plotly_font(sp[:legendfont], sp[:foreground_color_legend]),
+                :x => xpos,
+                :y => ypos
             )
         end