Add support for images

lib/ezdoc/xml/document_xml.rb

@@ -5,7 +5,10 @@ module Ezdoc
     class DocumentXml
       NAMESPACES = {
         "xmlns:w" => "http://schemas.openxmlformats.org/wordprocessingml/2006/main",
-        "xmlns:r" => "http://schemas.openxmlformats.org/officeDocument/2006/relationships"
+        "xmlns:r" => "http://schemas.openxmlformats.org/officeDocument/2006/relationships",
+        "xmlns:wp" => "http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing",
+        "xmlns:a" => "http://schemas.openxmlformats.org/drawingml/2006/main",
+        "xmlns:pic" => "http://schemas.openxmlformats.org/drawingml/2006/picture"
       }.freeze
 
       def initialize(nodes)
@@ -60,6 +63,15 @@ module Ezdoc
       end
 
       def render_run(xml, run)
+        case run
+        when Nodes::Image
+          render_image(xml, run)
+        when Nodes::Run
+          render_text_run(xml, run)
+        end
+      end
+
+      def render_text_run(xml, run)
         xml["w"].r do
           if run.bold || run.italic || run.underline
             xml["w"].rPr do
@@ -72,6 +84,45 @@ module Ezdoc
         end
       end
 
+      def render_image(xml, image)
+        xml["w"].r do
+          xml["w"].drawing do
+            xml["wp"].inline(distT: "0", distB: "0", distL: "0", distR: "0") do
+              xml["wp"].extent(cx: image.width_emu.to_s, cy: image.height_emu.to_s)
+              xml["wp"].docPr(id: image.doc_pr_id.to_s, name: image.filename)
+              xml["wp"].cNvGraphicFramePr do
+                xml["a"].graphicFrameLocks(noChangeAspect: "1")
+              end
+              xml["a"].graphic do
+                xml["a"].graphicData(uri: "http://schemas.openxmlformats.org/drawingml/2006/picture") do
+                  xml["pic"].pic do
+                    xml["pic"].nvPicPr do
+                      xml["pic"].cNvPr(id: "0", name: image.filename)
+                      xml["pic"].cNvPicPr
+                    end
+                    xml["pic"].blipFill do
+                      xml["a"].blip("r:embed" => image.rid)
+                      xml["a"].stretch do
+                        xml["a"].fillRect
+                      end
+                    end
+                    xml["pic"].spPr do
+                      xml["a"].xfrm do
+                        xml["a"].off(x: "0", y: "0")
+                        xml["a"].ext(cx: image.width_emu.to_s, cy: image.height_emu.to_s)
+                      end
+                      xml["a"].prstGeom(prst: "rect") do
+                        xml["a"].avLst
+                      end
+                    end
+                  end
+                end
+              end
+            end
+          end
+        end
+      end
+
       def render_table(xml, table)
         xml["w"].tbl do
           xml["w"].tblPr do