supporting print mapzoom and tileswitch function

Author: sanak

app/controllers/gtt_print_jobs_controller.rb

@@ -45,7 +45,7 @@ def show
   private
 
   def gtt_print_job_params
-    params[:gtt_print_job].permit(:layout, :custom_text)
+    params[:gtt_print_job].permit(:layout, :custom_text, :scale, :basemap_url)
   end
 
   def authorize_create

app/models/gtt_print_job.rb

@@ -3,7 +3,7 @@
 class GttPrintJob
   include ActiveModel::Model
 
-  attr_accessor :layout, :custom_text, :issue, :issues
+  attr_accessor :layout, :custom_text, :issue, :issues, :scale, :basemap_url
 
   validates :layout, presence: true
   validates :issue, presence: true,  if: ->{ issues.nil? }
@@ -17,7 +17,8 @@ def json
     if list?
       RedmineGttPrint::IssuesToJson.(issues, layout, custom_text: custom_text)
     else
-      RedmineGttPrint::IssueToJson.(issue, layout, custom_text: custom_text)
+      RedmineGttPrint::IssueToJson.(issue, layout, { custom_text: custom_text,
+        scale: scale, basemap_url: basemap_url })
     end
   end
 

app/views/hooks/_print_issue_form.html.erb

@@ -1,7 +1,9 @@
 <% if @issue and User.current.allowed_to?(:view_gtt_print, @issue.project) and (layouts = RedmineGttPrint.layouts_for_tracker(@issue.tracker)).present? %>
   <h3><%= l :label_gtt_print_title %></h3>
-  <%= form_for :gtt_print_job, url: gtt_print_jobs_path, remote: true do |f| %>
+  <%= form_for :gtt_print_job, :html => { :onsubmit => '_submit()' }, url: gtt_print_jobs_path, remote: true do |f| %>
     <%= hidden_field_tag :issue_id, @issue.id %>
+    <%= f.hidden_field :scale  %>
+    <%= f.hidden_field :basemap_url %>
     <%= f.text_area :custom_text %><br>
     <%= f.select :layout, options_from_collection_for_select(layouts, :to_s, :to_s) %>
     <button type="submit"><%= l :button_gtt_print_submit %></button>

assets/javascripts/gtt_print.js

@@ -15,3 +15,8 @@ var GttPrint = {
     }, 500);
   }
 };
+
+var _submit = function () {
+  $('input[name="gtt_print_job[scale]"]').val(App.getScale());
+  $('input[name="gtt_print_job[basemap_url]"]').val(App.getBasemapUrl());
+}

lib/redmine_gtt_print/issue_to_json.rb

@@ -33,7 +33,8 @@ def call
       }
 
       if data = @issue.geodata_for_print
-        json[:attributes][:map] = self.class.map_data(data[:center], [data[:geojson]])
+        json[:attributes][:map] = self.class.map_data(data[:center], [data[:geojson]],
+          @other_attributes[:scale], @other_attributes[:basemap_url])
       end
 
       context = {
@@ -144,7 +145,7 @@ def self.issue_custom_fields_by_name(issue)
       ]
     end
 
-    def self.map_data(center, features)
+    def self.map_data(center, features, scale, basemap_url)
       {
         center: center,
         rotation: 0,
@@ -182,7 +183,7 @@ def self.map_data(center, features)
             type: "osm"
           }
         ],
-        scale: 25000,
+        scale: scale,
         projection: "EPSG:3857",
         dpi: 144
       }