refactor parameter builder

Author: hidakatsuya

lib/thinreports/generator/pdf/document/graphics/text.rb

@@ -23,12 +23,47 @@ module Graphics
         # @option attrs [:trancate, :shrink_to_fit, :expand] :overflow (:trancate)
         # @option attrs [:none, :break_word] :word_wrap (:none)
         def text_box(content, x, y, w, h, attrs = {})
-          w, h = s2f(w, h)
 
           return if attrs[:color] == 'none'
 
           # Building parameters for box
-          box_params = {}.tap do |params|
+          box_params = build_box_params(x, y, w, h, attrs)
+          # Building parameters for text
+          text_params = build_text_params(content, attrs)
+
+          if need_bold_style_emulation?(text_params[:font], text_params[:styles])
+            box_params[:mode] = :fill_stroke
+
+            emulate_bold_style(text_params[:color], text_params[:size]) do
+              pdf.formatted_text_box([text_params], box_params)
+            end
+          else
+            pdf.formatted_text_box([text_params], box_params)
+          end
+
+        rescue Prawn::Errors::CannotFit
+          # Nothing to do.
+          #
+          # When the area is too small compared
+          # with the content and the style of the text.
+          #   (See prawn/core/text/formatted/line_wrap.rb#L185)
+        end
+
+        # @see #text_box
+        def text(content, x, y, w, h, attrs = {})
+          # Set the :overflow property to :shirink_to_fit.
+          text_box(content, x, y, w, h, { overflow: :shirink_to_fit }.merge(attrs))
+        end
+
+        # @private
+        #
+        # @param (see #text_box)
+        # @return [Hash] Returns first parameter (Formatted Text Array) of Prawn::Document#formatted_text_box
+        #   See http://prawnpdf.org/api-docs/2.0/Prawn/Text/Formatted.html
+        def build_box_params(x, y, w, h, attrs)
+          w, h = s2f(w, h)
+
+          {}.tap do |params|
             params[:at] = pos(x, y)
             params[:width] = w
 
@@ -52,38 +87,21 @@ def text_box(content, x, y, w, h, attrs = {})
               params[:character_spacing] = attrs[:letter_spacing]
             end
           end
+        end
 
-          # Building parameters for text
-          text_params = {}.tap do |params|
+        # @private
+        #
+        # @param (see #text_box)
+        # @return [Hash] Returns second parameter (Options) of Prawn::Document#formatted_text_box
+        #   See http://prawnpdf.org/api-docs/2.0/Prawn/Text.html#text_box-instance_method
+        def build_text_params(content, attrs)
+          {}.tap do |params|
             params[:text] = attrs[:word_wrap] == :none ? text_without_line_wrap(content) : content
             params[:styles] = attrs[:styles] || []
             params[:size] = attrs[:size]
             params[:font] = attrs[:font]
             params[:color] = parse_color(attrs[:color])
           end
-
-          if need_bold_style_emulation?(text_params[:font], text_params[:styles])
-            box_params[:mode] = :fill_stroke
-
-            emulate_bold_style(text_params[:color], text_params[:size]) do
-              pdf.formatted_text_box([text_params], box_params)
-            end
-          else
-            pdf.formatted_text_box([text_params], box_params)
-          end
-
-        rescue Prawn::Errors::CannotFit
-          # Nothing to do.
-          #
-          # When the area is too small compared
-          # with the content and the style of the text.
-          #   (See prawn/core/text/formatted/line_wrap.rb#L185)
-        end
-
-        # @see #text_box
-        def text(content, x, y, w, h, attrs = {})
-          # Set the :overflow property to :shirink_to_fit.
-          text_box(content, x, y, w, h, { overflow: :shirink_to_fit }.merge(attrs))
         end
 
         private