Merge remote-tracking branch 'upstream/pull/4486'

[rails.git] / app / helpers / svg_helper.rb

diff --git a/app/helpers/svg_helper.rb b/app/helpers/svg_helper.rb
index f2e02f7422cc37126900918174c60d51aae5eb93..a40fa7086fdf0d1db0a752b99896f8e71f63e7b4 100644 (file)
--- a/app/helpers/svg_helper.rb
+++ b/app/helpers/svg_helper.rb
@@ -1,8 +1,37 @@
 module SvgHelper
-  def solid_svg_image_tag(width, height, fill, **options)
-    svg = "<svg xmlns='http://www.w3.org/2000/svg' width='#{width}' height='#{height}'>" \
-          "<rect width='100%' height='100%' fill='#{fill}' />" \
-          "</svg>"
-    image_tag "data:image/svg+xml,#{u(svg)}", **options
+  def key_svg_tag(**options)
+    border_width = options["border"] ? (options["border-width"] || 1) : 0
+    rect_attrs = {
+      :width => "100%",
+      :height => "100%",
+      :fill => options["fill"] || "none"
+    }
+    if border_width.positive?
+      rect_attrs[:x] = rect_attrs[:y] = format("%g", 0.5 * border_width)
+      rect_attrs[:width] = options["width"] - border_width
+      rect_attrs[:height] = options["height"] - border_width
+    end
+    svg_attrs = options.slice("width", "height", "opacity", :class)
+
+    tag.svg(**svg_attrs) do
+      horizontal = "H#{options['width']}"
+      concat tag.rect(**rect_attrs, **stroke_attrs(options, "border")) if options["fill"] || options["border"]
+      if options["line"]
+        y_middle = format("%g", 0.5 * options["height"])
+        concat tag.path(:d => "M0,#{y_middle} #{horizontal}", **stroke_attrs(options, "line"))
+      end
+      if options["casing"]
+        casing_width = options["casing-width"] || 1
+        y_top = format("%g", 0.5 * casing_width)
+        y_bottom = format("%g", options["height"] - (0.5 * casing_width))
+        concat tag.path(:d => "M0,#{y_top} #{horizontal} M0,#{y_bottom} #{horizontal}", **stroke_attrs(options, "casing"))
+      end
+    end
+  end
+
+  private
+
+  def stroke_attrs(attrs, prefix)
+    attrs.select { |key| key.start_with?(prefix) }.transform_keys { |key| key.delete_prefix(prefix).prepend("stroke") }
   end
 end