Improve responsiveness of notes header content

Closes https://gitlab.com/gitlab-org/gitlab/-/issues/214732

app/assets/javascripts/notes/components/discussion_notes.vue

@@ -47,6 +47,11 @@ export default {
       required: false,
       default: '',
     },
+    isOverviewTab: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
   },
   computed: {
     ...mapGetters(['userCanReply']),
@@ -127,6 +132,7 @@ export default {
           :show-reply-button="userCanReply"
           :discussion-root="true"
           :discussion-resolve-path="discussion.resolve_path"
+          :is-overview-tab="isOverviewTab"
           @handleDeleteNote="$emit('deleteNote')"
           @startReplying="$emit('startReplying')"
         >
@@ -176,6 +182,7 @@ export default {
           :line="diffLine"
           :discussion-root="index === 0"
           :discussion-resolve-path="discussion.resolve_path"
+          :is-overview-tab="isOverviewTab"
           @handleDeleteNote="$emit('deleteNote')"
         >
           <template #avatar-badge>

app/assets/javascripts/notes/components/noteable_discussion.vue

@@ -66,6 +66,11 @@ export default {
       required: false,
       default: '',
     },
+    isOverviewTab: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
   },
   data() {
     return {
@@ -263,6 +268,7 @@ export default {
               :is-expanded="isExpanded"
               :line="line"
               :should-group-replies="shouldGroupReplies"
+              :is-overview-tab="isOverviewTab"
               @startReplying="showReplyForm"
               @deleteNote="deleteNoteHandler"
             >

app/assets/javascripts/notes/components/noteable_note.vue

@@ -84,6 +84,11 @@ export default {
       required: false,
       default: '',
     },
+    isOverviewTab: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
   },
   data() {
     return {
@@ -186,6 +191,14 @@ export default {
 
       return fileResolvedFromAvailableSource || null;
     },
+    avatarSize() {
+      // Use a different size if shown on a Merge Request Diff
+      if (this.line && !this.isOverviewTab) {
+        return 24;
+      }
+
+      return 40;
+    },
   },
   created() {
     const line = this.note.position?.line_range?.start || this.line;
@@ -391,7 +404,7 @@ export default {
         :link-href="author.path"
         :img-src="author.avatar_url"
         :img-alt="author.name"
-        :img-size="40"
+        :img-size="avatarSize"
         lazy
       >
         <template #avatar-badge>

app/assets/javascripts/notes/components/notes_app.vue

@@ -317,6 +317,7 @@ export default {
               :key="discussion.id"
               :discussion="discussion"
               :render-diff-file="true"
+              is-overview-tab
               :help-page-path="helpPagePath"
             />
           </template>

app/assets/javascripts/vue_shared/components/notes/placeholder_note.vue

@@ -34,12 +34,23 @@ export default {
       type: Object,
       required: true,
     },
+    line: {
+      type: Object,
+      required: false,
+      default: null,
+    },
   },
   computed: {
     ...mapGetters(['getUserData']),
     renderedNote() {
       return renderMarkdown(this.note.body);
     },
+    avatarSize() {
+      if (this.line) {
+        return 16;
+      }
+      return 40;
+    },
   },
 };
 </script>
@@ -50,7 +61,7 @@ export default {
       <user-avatar-link
         :link-href="getUserData.path"
         :img-src="getUserData.avatar_url"
-        :img-size="40"
+        :img-size="avatarSize"
       />
     </div>
     <div ref="note" :class="{ discussion: !note.individual_note }" class="timeline-content">

app/assets/stylesheets/framework/diffs.scss

@@ -1034,6 +1034,27 @@ table.code {
   }
 }
 
+// Notes tweaks for the Changes tab ONLY
+.diff-tr {
+  .timeline-discussion-body {
+    clear: left;
+
+    .note-body {
+      margin-top: 0 !important;
+    }
+  }
+
+  .timeline-entry img.avatar {
+    margin-top: -2px;
+    margin-right: $gl-padding-8;
+  }
+
+  // tiny adjustment to vertical align with the note header text
+  .discussion-collapsible .timeline-icon {
+    padding-top: 2px;
+  }
+}
+
 .files:not([data-can-create-note]) .frame {
   cursor: auto;
 }
@@ -1152,7 +1173,7 @@ table.code {
 }
 
 .discussion-collapsible {
-  margin: 0 $gl-padding $gl-padding 71px;
+  margin: 0 $gl-padding $gl-padding;
 
   .notes {
     border-radius: $border-radius-default;

app/assets/stylesheets/pages/notes.scss

@@ -125,18 +125,17 @@ $system-note-svg-size: 16px;
     }
   }
 
+  .timeline-discussion-body {
+    margin-top: -$gl-padding-8;
+  }
+
   .discussion {
     display: block;
     position: relative;
 
     .timeline-discussion-body {
-      margin-top: -$gl-padding-8;
       overflow-x: auto;
       overflow-y: hidden;
-
-      .note-body {
-        margin-top: $gl-padding-8;
-      }
     }
 
     .diff-content {
@@ -586,17 +585,47 @@ $system-note-svg-size: 16px;
 .note-header {
   display: flex;
   justify-content: space-between;
+  flex-wrap: wrap;
+
+  > .note-header-info,
+  > .note-actions {
+    flex-grow: 1;
+    flex-shrink: 1;
+  }
+}
+
+.note {
+  @include notes-media('max', map-get($grid-breakpoints, sm) - 1) {
+    .note-header {
+      .note-actions {
+        flex-wrap: wrap;
+        margin-bottom: $gl-padding-12;
+
+        > :first-child {
+          margin-left: 0;
+        }
+      }
+    }
+
+    .note-header-author-name {
+      display: block;
+    }
+  }
 }
 
 .note-header-info {
   min-width: 0;
-  padding-bottom: $gl-padding-8;
 
   &.discussion {
     padding-bottom: 0;
   }
 }
 
+.note-header-info,
+.note-actions {
+  padding-bottom: $gl-padding-8;
+}
+
 .system-note .note-header-info {
   padding-bottom: 0;
 }
@@ -667,7 +696,8 @@ $system-note-svg-size: 16px;
 
 .note-actions {
   align-self: flex-start;
-  flex-shrink: 0;
+  justify-content: flex-end;
+  flex-shrink: 1;
   display: inline-flex;
   align-items: center;
   margin-left: 10px;

spec/frontend/notes/components/noteable_note_spec.js

@@ -189,6 +189,27 @@ describe('issue_note', () => {
       createWrapper();
     });
 
+    describe('avatar sizes in diffs', () => {
+      const line = {
+        line_code: 'abc_1_1',
+        type: null,
+        old_line: '1',
+        new_line: '1',
+      };
+
+      it('should render 24px avatars', async () => {
+        wrapper.setProps({
+          note: { ...note },
+          discussionRoot: true,
+          line,
+        });
+
+        await wrapper.vm.$nextTick();
+
+        expect(wrapper.findComponent(UserAvatarLink).props('imgSize')).toBe(24);
+      });
+    });
+
     it('should render user information', () => {
       const { author } = note;
       const avatar = wrapper.findComponent(UserAvatarLink);