Implement styles

lib/ezdoc/xml/content_types.rb

@@ -5,9 +5,10 @@ module Ezdoc
     class ContentTypes
       NAMESPACE = "http://schemas.openxmlformats.org/package/2006/content-types"
 
-      def initialize(has_numbering: false, images: [])
+      def initialize(has_numbering: false, images: [], has_styles: false)
         @has_numbering = has_numbering
         @images = images
+        @has_styles = has_styles
       end
 
       def to_xml
@@ -24,6 +25,12 @@ module Ezdoc
               PartName: "/word/document.xml",
               ContentType: "application/vnd.openxmlformats-officedocument.wordprocessingml.document.main+xml"
             )
+            if @has_styles
+              xml.Override(
+                PartName: "/word/styles.xml",
+                ContentType: "application/vnd.openxmlformats-officedocument.wordprocessingml.styles+xml"
+              )
+            end
             if @has_numbering
               xml.Override(
                 PartName: "/word/numbering.xml",

lib/ezdoc/xml/document_xml.rb

@@ -42,6 +42,11 @@ module Ezdoc
 
       def render_paragraph(xml, para)
         xml["w"].p do
+          if para.style
+            xml["w"].pPr do
+              xml["w"].pStyle("w:val" => para.style.style_id)
+            end
+          end
           para.runs.each { |run| render_run(xml, run) }
         end
       end
@@ -73,8 +78,9 @@ module Ezdoc
 
       def render_text_run(xml, run)
         xml["w"].r do
-          if run.bold || run.italic || run.underline
+          if run.bold || run.italic || run.underline || run.style
             xml["w"].rPr do
+              xml["w"].rStyle("w:val" => run.style.style_id) if run.style
               xml["w"].b if run.bold
               xml["w"].i if run.italic
               xml["w"].u("w:val" => "single") if run.underline

lib/ezdoc/xml/relationships.rb

@@ -21,24 +21,38 @@ module Ezdoc
 
     class DocumentRelationships
       NAMESPACE = "http://schemas.openxmlformats.org/package/2006/relationships"
+      STYLES_TYPE = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles"
+      NUMBERING_TYPE = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/numbering"
       IMAGE_TYPE = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/image"
 
-      def initialize(has_numbering: false, images: [])
+      def initialize(has_numbering: false, images: [], has_styles: false)
         @has_numbering = has_numbering
         @images = images
+        @has_styles = has_styles
       end
 
       def to_xml
         builder = Nokogiri::XML::Builder.new(encoding: "UTF-8") do |xml|
           xml.Relationships(xmlns: NAMESPACE) do
-            if @has_numbering
+            # rId1 = styles.xml (always first when present)
+            if @has_styles
               xml.Relationship(
                 Id: "rId1",
-                Type: "http://schemas.openxmlformats.org/officeDocument/2006/relationships/numbering",
+                Type: STYLES_TYPE,
+                Target: "styles.xml"
+              )
+            end
+
+            # rId2 = numbering.xml (if lists present)
+            if @has_numbering
+              xml.Relationship(
+                Id: "rId2",
+                Type: NUMBERING_TYPE,
                 Target: "numbering.xml"
               )
             end
 
+            # Images start at rId2 or rId3 depending on numbering
             @images.each do |image|
               xml.Relationship(
                 Id: image.rid,

lib/ezdoc/xml/styles_xml.rb

@@ -0,0 +1,66 @@
+# frozen_string_literal: true
+
+module Ezdoc
+  module Xml
+    class StylesXml
+      NAMESPACE = "http://schemas.openxmlformats.org/wordprocessingml/2006/main"
+
+      ALIGNMENT_MAP = {
+        left: "left",
+        center: "center",
+        right: "right",
+        justify: "both"
+      }.freeze
+
+      def initialize(styles)
+        @styles = styles
+      end
+
+      def to_xml
+        builder = Nokogiri::XML::Builder.new(encoding: "UTF-8") do |xml|
+          xml.styles("xmlns:w" => NAMESPACE) do
+            xml.parent.namespace = xml.parent.namespace_definitions.find { |ns| ns.prefix == "w" }
+
+            @styles.each_value do |style|
+              render_style(xml, style)
+            end
+          end
+        end
+        builder.to_xml
+      end
+
+      private
+
+      def render_style(xml, style)
+        style_type = style.paragraph_properties? ? "paragraph" : "character"
+
+        xml["w"].style("w:type" => style_type, "w:styleId" => style.style_id) do
+          xml["w"].name("w:val" => style.display_name)
+
+          render_paragraph_properties(xml, style) if style.paragraph_properties?
+          render_run_properties(xml, style) if style.text_properties?
+        end
+      end
+
+      def render_paragraph_properties(xml, style)
+        xml["w"].pPr do
+          xml["w"].jc("w:val" => ALIGNMENT_MAP[style.align]) if style.align
+          xml["w"].ind("w:left" => style.indent.to_s) if style.indent
+          xml["w"].spacing("w:before" => style.spacing_before.to_s) if style.spacing_before
+          xml["w"].spacing("w:after" => style.spacing_after.to_s) if style.spacing_after
+        end
+      end
+
+      def render_run_properties(xml, style)
+        xml["w"].rPr do
+          xml["w"].rFonts("w:ascii" => style.font, "w:hAnsi" => style.font) if style.font
+          xml["w"].sz("w:val" => style.size_half_points.to_s) if style.size
+          xml["w"].color("w:val" => style.color) if style.color
+          xml["w"].b if style.bold
+          xml["w"].i if style.italic
+          xml["w"].u("w:val" => "single") if style.underline
+        end
+      end
+    end
+  end
+end