Merge branch '21604-pipeline-ui-updates' into 'master'

Update pipeline graph styles to match mockup

#### What does this MR do?
* Updates CSS for pipeline graph to match mockup 
* Adds JS to dynamically change line widths based on number of builds

#### Screenshots (if relevant)
![Screen_Shot_2016-10-04_at_2.06.24_PM](/uploads/362378ca23e18a3cc59185eafab9f9ac/Screen_Shot_2016-10-04_at_2.06.24_PM.png)

#### What are the relevant issue numbers?
Closes #21604

See merge request !6320

2 files changed, 99 insertions, 43 deletions

diff --git a/app/assets/stylesheets/framework/variables.scss b/app/assets/stylesheets/framework/variables.scss
index 14ec310de2d..4c34ed3ebf7 100644
--- a/app/assets/stylesheets/framework/variables.scss
+++ b/app/assets/stylesheets/framework/variables.scss
@@ -17,8 +17,10 @@ $white-normal: #ededed;
 $white-dark: #ececec;
 
 $gray-light: #fafafa;
+$gray-lighter: #f9f9f9;
 $gray-normal: #f5f5f5;
 $gray-dark: #ededed;
+$gray-darker: #eee;
 $gray-darkest: #c9c9c9;
 
 $green-light: #38ae67;
@@ -33,6 +35,8 @@ $blue-medium-light: #3498cb;
 $blue-medium: #2f8ebf;
 $blue-medium-dark: #2d86b4;
 
+$blue-light-transparent: rgba(44, 159, 216, 0.05);
+
 $orange-light: #fc8a51;
 $orange-normal: #e75e40;
 $orange-dark: #ce5237;
@@ -91,6 +95,7 @@ $table-text-gray:       #8f8f8f;
 $gl-font-size:         15px;
 $gl-title-color:       #333;
 $gl-text-color:        #5c5c5c;
+$gl-text-color-light:  #8c8c8c;
 $gl-text-green:        #4a2;
 $gl-text-red:          #d12f19;
 $gl-text-orange:       #d90;
diff --git a/app/assets/stylesheets/pages/pipelines.scss b/app/assets/stylesheets/pages/pipelines.scss
index a2779704eff..05f59279637 100644
--- a/app/assets/stylesheets/pages/pipelines.scss
+++ b/app/assets/stylesheets/pages/pipelines.scss
@@ -303,16 +303,41 @@
 .stage-column {
   display: inline-block;
   vertical-align: top;
-  margin-right: 65px;
+
+  &:not(:last-child) {
+    margin-right: 44px;
+  }
+
+  &.left-margin {
+    &:not(:first-child) {
+      margin-left: 44px;
+
+      .left-connector {
+        &::before {
+          content: '';
+          position: absolute;
+          top: 48%;
+          left: -48px;
+          border-top: 2px solid $border-color;
+          width: 48px;
+          height: 1px;
+        }
+      }
+    }
+  }
+
+  &.no-margin {
+    margin: 0;
+  }
 
   li {
     list-style: none;
   }
 
   .stage-name {
-    margin-bottom: 15px;
+    margin: 0 0 15px 10px;
     font-weight: bold;
-    width: 150px;
+    width: 176px;
     white-space: nowrap;
     overflow: hidden;
     text-overflow: ellipsis;
@@ -321,17 +346,23 @@
   .build {
     border: 1px solid $border-color;
     position: relative;
-    padding: 6px 10px;
+    padding: 7px 10px 8px;
     border-radius: 30px;
-    width: 150px;
+    width: 186px;
     margin-bottom: 10px;
 
+    &:hover {
+      background-color: $gray-lighter;
+      .dropdown-menu-toggle {
+        background-color: transparent;
+      }
+    }
+
     &.playable {
-      background-color: $gray-light;
 
       svg {
-        height: 12px;
-        width: 12px;
+        height: 13px;
+        width: 20px;
         position: relative;
         top: 1px;
 
@@ -342,10 +373,20 @@
     }
 
     .build-content {
-      width: 130px;
+      display: -ms-flexbox;
+      display: -webkit-flex;
+      display: flex;
+      width: 164px;
+
+      .ci-status-icon {
+        svg {
+          height: 20px;
+          width: 20px;
+        }
+      }
 
       .ci-status-text {
-        width: 110px;
+        width: 135px;
         white-space: nowrap;
         overflow: hidden;
         text-overflow: ellipsis;
@@ -356,44 +397,53 @@
       }
 
       a {
-        color: $layout-link-gray;
+        color: $gl-text-color-light;
         text-decoration: none;
-
-        &:hover {
-          .ci-status-text {
-            text-decoration: underline;
-          }
-        }
       }
 
       .dropdown-menu-toggle {
         border: none;
         width: auto;
         padding: 0;
-        color: $layout-link-gray;
+        color: $gl-text-color-light;
+        flex-grow: 1;
 
         .ci-status-text {
-          width: 80px;
+          max-width: 112px;
+          width: auto;
         }
       }
 
       .grouped-pipeline-dropdown {
         padding: 8px 0;
-        width: 200px;
+        width: 186px;
         left: auto;
-        right: -214px;
+        right: -197px;
         top: -9px;
         max-height: 245px;
         overflow-y: scroll;
 
-        a:hover {
-          .ci-status-text {
-            text-decoration: none;
+        a {
+          color: $gl-text-color;
+          padding: 7px 8px 8px;
+
+          &:hover {
+            background-color: $blue-light-transparent;
+            border-radius: 3px;
+
+            .ci-status-text {
+              text-decoration: none;
+            }
           }
         }
 
+        svg {
+          width: 14px;
+          height: 14px;
+        }
+
         .ci-status-text {
-          width: 145px;
+          width: 112px;
         }
 
         .arrow {
@@ -426,9 +476,10 @@
       }
 
       .badge {
-        background-color: $gray-dark;
-        color: $layout-link-gray;
+        background-color: $gray-darker;
+        color: $gl-text-color-light;
         font-weight: normal;
+        margin-left: $btn-xs-side-margin;
       }
     }
 
@@ -442,10 +493,10 @@
       &::after {
         content: '';
         position: absolute;
-        top: 50%;
-        right: -69px;
+        top: 48%;
+        right: -48px;
         border-top: 2px solid $border-color;
-        width: 69px;
+        width: 48px;
         height: 1px;
       }
     }
@@ -454,25 +505,25 @@
     &:not(:first-child) {
       &::after, &::before {
         content: '';
-        top: -47px;
+        top: -49px;
         position: absolute;
         border-bottom: 2px solid $border-color;
-        width: 20px;
-        height: 65px;
+        width: 25px;
+        height: 69px;
       }
 
       // Right connecting curves
       &::after {
-        right: -20px;
+        right: -25px;
         border-right: 2px solid $border-color;
-        border-radius: 0 0 15px;
+        border-radius: 0 0 20px;
       }
 
       // Left connecting curves
       &::before {
-        left: -20px;
+        left: -25px;
         border-left: 2px solid $border-color;
-        border-radius: 0 0 0 15px;
+        border-radius: 0 0 0 20px;
       }
     }
 
@@ -480,7 +531,7 @@
     &:nth-child(2) {
       &::after, &::before {
         height: 29px;
-        top: -10px;
+        top: -9px;
       }
       .curve {
         display: block;
@@ -538,20 +589,20 @@
       width: 21px;
       height: 25px;
       position: absolute;
-      top: -29px;
+      top: -32px;
       border-top: 2px solid $border-color;
     }
 
     &::after {
-      left: -39px;
+      left: -44px;
       border-right: 2px solid $border-color;
-      border-radius: 0 15px;
+      border-radius: 0 20px;
     }
 
     &::before {
-      right: -39px;
+      right: -44px;
       border-left: 2px solid $border-color;
-      border-radius: 15px 0 0;
+      border-radius: 20px 0 0;
     }
   }
 }