Improve Continuous Integration graphs page

* fix commit duration graph
* make graphs responsive
* fix wrong padding
* add a bit of explanation to colors

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/views/projects/graphs/ci.html.haml

 - page_title "Continuous Integration", "Graphs"
 = render "header_title"
 = render 'head'
-.gray-content-block
-  %ul.breadcrumb.repo-breadcrumb
-    = commits_breadcrumbs
+.gray-content-block.append-bottom-default
+  .oneline
+    A collection of graphs for Continuous Integration
+
 #charts.ci-charts
+  .row
+    .col-md-6
+      = render 'projects/graphs/ci/overall'
+    .col-md-6
+      = render 'projects/graphs/ci/build_times'
+
+  %hr
   = render 'projects/graphs/ci/builds'
-  = render 'projects/graphs/ci/build_times'
-= render 'projects/graphs/ci/overall'

app/views/projects/graphs/ci/_build_times.haml

-%fieldset
-  %legend
+%div
+  %p.light
     Commit duration in minutes for last 30 commits
-  %canvas#build_timesChart.padded{width: 800, height: 300}
+  %canvas#build_timesChart{height: 200}
 :javascript
   var data = {
     labels : #{@charts[:build_times].labels.to_json},
     datasets : [
       {
-        fillColor : "#4A3",
-        strokeColor : "rgba(151,187,205,1)",
-        pointColor : "rgba(151,187,205,1)",
-        pointStrokeColor : "#fff",
+        fillColor : "rgba(220,220,220,0.5)",
+        strokeColor : "rgba(220,220,220,1)",
+        barStrokeWidth: 1,
+        barValueSpacing: 1,
+        barDatasetSpacing: 1,
         data : #{@charts[:build_times].build_times.to_json}
       }
     ]
   }
   var ctx = $("#build_timesChart").get(0).getContext("2d");
-  new Chart(ctx).Line(data,{"scaleOverlay": true});
+  new Chart(ctx).Bar(data,{"scaleOverlay": true, responsive: true, maintainAspectRatio: false});

app/views/projects/graphs/ci/_builds.haml

-%fieldset
-  %legend
-    Builds chart for last week
-    (#{date_from_to(Date.today - 7.days, Date.today)})
-  %canvas#weekChart.padded{width: 800, height: 200}
-%fieldset
-  %legend
+%h4 Build charts
+%p
+   
+  %span.cgreen
+    = icon("circle")
+    success
+   
+  %span.cgray
+    = icon("circle")
+    all
+.prepend-top-default
+  %p.light
+    Builds for last week
+    (#{date_from_to(Date.today - 7.days, Date.today)})
+  %canvas#weekChart{height: 200}
+.prepend-top-default
+  %p.light
     Builds chart for last month
     (#{date_from_to(Date.today - 30.days, Date.today)})
-  %canvas#monthChart.padded{width: 800, height: 300}
-
-%fieldset
-  %legend Builds chart for last year
-  %canvas#yearChart.padded{width: 800, height: 400}
+  %canvas#monthChart{height: 200}
+.prepend-top-default
+  %p.light
+    Builds chart for last year
+  %canvas#yearChart.padded{height: 250}
 - [:week, :month, :year].each do |scope|
   :javascript
@@ -22,20 +32,20 @@
       labels : #{@charts[scope].labels.to_json},
       datasets : [
         {
-          fillColor : "rgba(220,220,220,0.5)",
-          strokeColor : "rgba(220,220,220,1)",
-          pointColor : "rgba(220,220,220,1)",
+          fillColor : "#7f8fa4",
+          strokeColor : "#7f8fa4",
+          pointColor : "#7f8fa4",
           pointStrokeColor : "#EEE",
           data : #{@charts[scope].total.to_json}
         },
         {
-          fillColor : "#4A3",
-          strokeColor : "rgba(151,187,205,1)",
-          pointColor : "rgba(151,187,205,1)",
+          fillColor : "#44aa22",
+          strokeColor : "#44aa22",
+          pointColor : "#44aa22",
           pointStrokeColor : "#fff",
           data : #{@charts[scope].success.to_json}
         }
       ]
     }
     var ctx = $("##{scope}Chart").get(0).getContext("2d");
-    new Chart(ctx).Line(data,{"scaleOverlay": true});
+    new Chart(ctx).Line(data,{"scaleOverlay": true, responsive: true, maintainAspectRatio: false});

app/views/projects/graphs/ci/_overall.haml

 - ci_project = @project.gitlab_ci_project
-%fieldset
-  %legend Overall
-  %p
+%h4 Overall stats
+%ul
+  %li
     Total:
     %strong= pluralize ci_project.builds.count(:all), 'build'
-  %p
+  %li
     Successful:
     %strong= pluralize ci_project.builds.success.count(:all), 'build'
-  %p
+  %li
     Failed:
     %strong= pluralize ci_project.builds.failed.count(:all), 'build'
-
-  %p
+  %li
     Success ratio:
     %strong
       #{success_ratio(ci_project.builds.success, ci_project.builds.failed)}%
-
-  %p
+  %li
     Commits covered:
     %strong
       = ci_project.commits.count(:all)

app/views/projects/graphs/commits.html.haml

@@ -2,7 +2,7 @@
 = render "header_title"
 = render 'head'
-.gray-content-block
+.gray-content-block.append-bottom-default
   .tree-ref-holder
     = render 'shared/ref_switcher', destination: 'graphs_commits'
   %ul.breadcrumb.repo-breadcrumb

app/views/projects/graphs/show.html.haml

@@ -2,7 +2,7 @@
 = render "header_title"
 = render 'head'
-.gray-content-block
+.gray-content-block.append-bottom-default
   .tree-ref-holder
     = render 'shared/ref_switcher', destination: 'graphs'
   %ul.breadcrumb.repo-breadcrumb

lib/ci/charts.rb

@@ -60,7 +60,8 @@ module Ci
     class BuildTime < Chart
       def collect
-        commits = project.commits.joins(:builds).where("#{Ci::Build.table_name}.finished_at is NOT NULL AND #{Ci::Build.table_name}.started_at is NOT NULL").last(30)
+        commits = project.commits.last(30)
+
         commits.each do |commit|
           @labels << commit.short_sha
           @build_times << (commit.duration / 60)