Implement design_presentation component

This component contains all logic related to the presentation
of a design, with comment pins overlayed, to the user.

ee/app/assets/javascripts/design_management/components/design_overlay.vue

@@ -7,6 +7,10 @@ export default {
     Icon,
   },
   props: {
+    dimensions: {
+      type: Object,
+      required: true,
+    },
     position: {
       type: Object,
       required: true,
@@ -23,12 +27,11 @@ export default {
     },
   },
   computed: {
-    overlayDimensions() {
+    overlayStyle() {
       return {
-        width: `${this.position.width}px`,
-        height: `${this.position.height}px`,
-        left: `calc(50% - ${this.position.width / 2}px)`,
-        top: `calc(50% - ${this.position.height / 2}px)`,
+        width: `${this.dimensions.width}px`,
+        height: `${this.dimensions.height}px`,
+        ...this.position,
       };
     },
   },
@@ -38,8 +41,8 @@ export default {
     },
     getNotePosition(data) {
       const { x, y, width, height } = data;
-      const widthRatio = this.position.width / width;
-      const heightRatio = this.position.height / height;
+      const widthRatio = this.dimensions.width / width;
+      const heightRatio = this.dimensions.height / height;
       return {
         left: `${Math.round(x * widthRatio)}px`,
         top: `${Math.round(y * heightRatio)}px`,
@@ -50,7 +53,7 @@ export default {
 </script>
 
 <template>
-  <div class="position-absolute image-diff-overlay frame" :style="overlayDimensions">
+  <div class="position-absolute image-diff-overlay frame" :style="overlayStyle">
     <button
       type="button"
       class="btn-transparent position-absolute image-diff-overlay-add-comment w-100 h-100 js-add-image-diff-note-button"

ee/app/assets/javascripts/design_management/components/design_presentation.vue

+<script>
+import DesignImage from './image.vue';
+import DesignOverlay from './design_overlay.vue';
+
+export default {
+  components: {
+    DesignImage,
+    DesignOverlay,
+  },
+  props: {
+    image: {
+      type: String,
+      required: false,
+      default: '',
+    },
+    imageName: {
+      type: String,
+      required: false,
+      default: '',
+    },
+    discussions: {
+      type: Array,
+      required: true,
+    },
+    isAnnotating: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
+  },
+  data() {
+    return {
+      overlayDimensions: null,
+      overlayPosition: null,
+      currentAnnotationCoordinates: null,
+    };
+  },
+  computed: {
+    discussionStartingNotes() {
+      return this.discussions.map(discussion => discussion.notes[0]);
+    },
+    currentCommentForm() {
+      return (this.isAnnotating && this.currentAnnotationCoordinates) || null;
+    },
+  },
+  methods: {
+    setOverlayDimensions(overlayDimensions) {
+      this.overlayDimensions = overlayDimensions;
+    },
+    setOverlayPosition() {
+      if (!this.overlayDimensions) {
+        this.overlayPosition = {};
+      }
+
+      const { presentationViewport } = this.$refs;
+      if (!presentationViewport) return;
+
+      // default to center
+      this.overlayPosition = {
+        left: `calc(50% - ${this.overlayDimensions.width / 2}px)`,
+        top: `calc(50% - ${this.overlayDimensions.height / 2}px)`,
+      };
+
+      // if the overlay overflows, then don't center
+      if (this.overlayDimensions.width > presentationViewport.offsetWidth) {
+        this.overlayPosition.left = '0';
+      }
+      if (this.overlayDimensions.height > presentationViewport.offsetHeight) {
+        this.overlayPosition.top = '0';
+      }
+    },
+    onImageResize(imageDimensions) {
+      this.setOverlayDimensions(imageDimensions);
+      this.setOverlayPosition();
+    },
+    openCommentForm(position) {
+      const { x, y } = position;
+      const { width, height } = this.overlayDimensions;
+      this.currentAnnotationCoordinates = {
+        x,
+        y,
+        width,
+        height,
+      };
+      this.$emit('openCommentForm', this.currentAnnotationCoordinates);
+    },
+  },
+};
+</script>
+
+<template>
+  <div ref="presentationViewport" class="d-flex flex-column h-100 mh-100 position-relative">
+    <design-image v-if="image" :image="image" :name="imageName" @resize="onImageResize" />
+    <design-overlay
+      v-if="overlayDimensions && overlayPosition"
+      :dimensions="overlayDimensions"
+      :position="overlayPosition"
+      :notes="discussionStartingNotes"
+      :current-comment-form="currentCommentForm"
+      @openCommentForm="openCommentForm"
+    />
+  </div>
+</template>

ee/app/assets/javascripts/design_management/components/image.vue

@@ -44,7 +44,7 @@ export default {
           height: contentImg.clientHeight,
         };
 
-        this.$emit('setOverlayDimensions', position);
+        this.$emit('resize', position);
       });
     },
   },

ee/app/assets/javascripts/design_management/pages/design/index.vue

@@ -5,12 +5,11 @@ import { GlLoadingIcon, GlAlert } from '@gitlab/ui';
 import createFlash from '~/flash';
 import allVersionsMixin from '../../mixins/all_versions';
 import Toolbar from '../../components/toolbar/index.vue';
-import DesignImage from '../../components/image.vue';
-import DesignOverlay from '../../components/design_overlay.vue';
 import DesignDiscussion from '../../components/design_notes/design_discussion.vue';
 import DesignReplyForm from '../../components/design_notes/design_reply_form.vue';
 import DesignDestroyer from '../../components/design_destroyer.vue';
 import Participants from '~/sidebar/components/participants/participants.vue';
+import DesignPresentation from '../../components/design_presentation.vue';
 import getDesignQuery from '../../graphql/queries/getDesign.query.graphql';
 import appDataQuery from '../../graphql/queries/appData.query.graphql';
 import createImageDiffNoteMutation from '../../graphql/mutations/createImageDiffNote.mutation.graphql';
@@ -30,8 +29,7 @@ import {
 export default {
   components: {
     ApolloMutation,
-    DesignImage,
-    DesignOverlay,
+    DesignPresentation,
     DesignDiscussion,
     DesignDestroyer,
     Toolbar,
@@ -52,10 +50,6 @@ export default {
       design: {},
       comment: '',
       annotationCoordinates: null,
-      overlayDimensions: {
-        width: 0,
-        height: 0,
-      },
       projectPath: '',
       errorMessage: '',
       issueIid: '',
@@ -97,9 +91,6 @@ export default {
     discussions() {
       return extractDiscussions(this.design.discussions);
     },
-    discussionStartingNotes() {
-      return this.discussions.map(discussion => discussion.notes[0]);
-    },
     discussionParticipants() {
       return extractParticipants(this.design.issue.participants);
     },
@@ -145,6 +136,9 @@ export default {
         webPath: this.design.issue.webPath.substr(1),
       };
     },
+    isAnnotating() {
+      return Boolean(this.annotationCoordinates);
+    },
   },
   mounted() {
     Mousetrap.bind('esc', this.closeDesign);
@@ -180,25 +174,13 @@ export default {
       this.errorMessage = designDeletionError({ singular: true });
       throw e;
     },
-    openCommentForm(position) {
-      const { x, y } = position;
-      const { width, height } = this.overlayDimensions;
-      this.annotationCoordinates = {
-        ...this.annotationCoordinates,
-        x,
-        y,
-        width,
-        height,
-      };
+    openCommentForm(annotationCoordinates) {
+      this.annotationCoordinates = annotationCoordinates;
     },
     closeCommentForm() {
       this.comment = '';
       this.annotationCoordinates = null;
     },
-    setOverlayDimensions(position) {
-      this.overlayDimensions.width = position.width;
-      this.overlayDimensions.height = position.height;
-    },
     closeDesign() {
       this.$router.push({
         name: 'designs',
@@ -245,19 +227,13 @@ export default {
           </gl-alert>
         </div>
 
-        <div class="d-flex flex-column h-100 mh-100 position-relative">
-          <design-image
-            :image="design.image"
-            :name="design.filename"
-            @setOverlayDimensions="setOverlayDimensions"
-          />
-          <design-overlay
-            :position="overlayDimensions"
-            :notes="discussionStartingNotes"
-            :current-comment-form="annotationCoordinates"
-            @openCommentForm="openCommentForm"
-          />
-        </div>
+        <design-presentation
+          :image="design.image"
+          :image-name="design.filename"
+          :discussions="discussions"
+          :is-annotating="isAnnotating"
+          @openCommentForm="openCommentForm"
+        />
       </div>
       <div class="image-notes">
         <h2 class="gl-font-size-20 font-weight-bold mt-0">{{ issue.title }}</h2>

ee/app/assets/stylesheets/components/design_management/design.scss

@@ -2,6 +2,11 @@
   object-fit: contain;
 }
 
+.design-presentation-wrapper {
+  top: 0;
+  left: 0;
+}
+
 .design-list-item .design-event {
   top: $gl-padding;
   right: $gl-padding;

ee/spec/frontend/design_management/components/__snapshots__/design_presentation_spec.js.snap

+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Design management design presentation component renders empty state when no image provided 1`] = `
+<div
+  class="d-flex flex-column h-100 mh-100 position-relative"
+>
+  <!---->
+   
+  <!---->
+</div>
+`;
+
+exports[`Design management design presentation component renders image and overlay when image provided 1`] = `
+<div
+  class="d-flex flex-column h-100 mh-100 position-relative"
+>
+  <design-image-stub
+    image="test.jpg"
+    name="test"
+  />
+   
+  <design-overlay-stub
+    dimensions="[object Object]"
+    notes=""
+    position="[object Object]"
+  />
+</div>
+`;

ee/spec/frontend/design_management/components/design_overlay_spec.js

@@ -31,10 +31,14 @@ describe('Design overlay component', () => {
   function createComponent(props = {}) {
     wrapper = shallowMount(DesignOverlay, {
       propsData: {
-        position: {
+        dimensions: {
           width: 100,
           height: 100,
         },
+        position: {
+          top: '0',
+          left: '0',
+        },
         ...props,
       },
     });
@@ -44,7 +48,7 @@ describe('Design overlay component', () => {
     createComponent();
 
     expect(wrapper.find('.image-diff-overlay').attributes().style).toBe(
-      'width: 100px; height: 100px;',
+      'width: 100px; height: 100px; top: 0px; left: 0px;',
     );
   });
 
@@ -92,7 +96,7 @@ describe('Design overlay component', () => {
   it('should recalculate badges positions on window resize', () => {
     createComponent({
       notes,
-      position: {
+      dimensions: {
         width: 400,
         height: 400,
       },
@@ -101,7 +105,7 @@ describe('Design overlay component', () => {
     expect(findFirstBadge().attributes().style).toBe('left: 40px; top: 60px;');
 
     wrapper.setProps({
-      position: {
+      dimensions: {
         width: 200,
         height: 200,
       },

ee/spec/frontend/design_management/components/design_presentation_spec.js

+import { shallowMount } from '@vue/test-utils';
+import DesignPresentation from 'ee/design_management/components/design_presentation.vue';
+
+const mockOverlayData = {
+  overlayDimensions: {
+    width: 100,
+    height: 100,
+  },
+  overlayPosition: {
+    top: '0',
+    left: '0',
+  },
+};
+
+describe('Design management design presentation component', () => {
+  let wrapper;
+
+  function createComponent(
+    { image, imageName, discussions = [], isAnnotating = false } = {},
+    data = {},
+  ) {
+    wrapper = shallowMount(DesignPresentation, {
+      propsData: {
+        image,
+        imageName,
+        discussions,
+        isAnnotating,
+      },
+    });
+
+    wrapper.setData(data);
+  }
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  it('renders image and overlay when image provided', () => {
+    createComponent(
+      {
+        image: 'test.jpg',
+        imageName: 'test',
+      },
+      mockOverlayData,
+    );
+
+    return wrapper.vm.$nextTick().then(() => {
+      expect(wrapper.element).toMatchSnapshot();
+    });
+  });
+
+  it('renders empty state when no image provided', () => {
+    createComponent();
+
+    return wrapper.vm.$nextTick().then(() => {
+      expect(wrapper.element).toMatchSnapshot();
+    });
+  });
+
+  it('openCommentForm event emits correct data', () => {
+    createComponent(
+      {
+        image: 'test.jpg',
+        imageName: 'test',
+      },
+      mockOverlayData,
+    );
+
+    wrapper.vm.openCommentForm({ x: 1, y: 1 });
+
+    return wrapper.vm.$nextTick().then(() => {
+      expect(wrapper.emitted('openCommentForm')).toEqual([
+        [{ ...mockOverlayData.overlayDimensions, x: 1, y: 1 }],
+      ]);
+    });
+  });
+
+  it('currentCommentForm is null when isAnnotating is false', () => {
+    createComponent({
+      image: 'test.jpg',
+      imageName: 'test',
+    });
+
+    expect(wrapper.vm.currentCommentForm).toBeNull();
+  });
+
+  it('currentCommentForm is null when isAnnotating is true but annotation coordinates are falsey', () => {
+    createComponent({
+      image: 'test.jpg',
+      imageName: 'test',
+      isAnnotating: true,
+    });
+
+    expect(wrapper.vm.currentCommentForm).toBeNull();
+  });
+
+  it('currentCommentForm is equal to current annotation coordinates when isAnnotating is true', () => {
+    createComponent(
+      {
+        image: 'test.jpg',
+        imageName: 'test',
+        isAnnotating: true,
+      },
+      {
+        currentAnnotationCoordinates: {
+          x: 1,
+          y: 1,
+          width: 100,
+          height: 100,
+        },
+      },
+    );
+
+    expect(wrapper.vm.currentCommentForm).toEqual({
+      x: 1,
+      y: 1,
+      width: 100,
+      height: 100,
+    });
+  });
+
+  describe('setOverlayPosition', () => {
+    beforeEach(() => {
+      createComponent(
+        {
+          image: 'test.jpg',
+          imageName: 'test',
+        },
+        mockOverlayData,
+      );
+    });
+
+    afterEach(() => {
+      jest.clearAllMocks();
+    });
+
+    it('sets overlay position correctly when overlay is smaller than viewport', () => {
+      jest.spyOn(wrapper.vm.$refs.presentationViewport, 'offsetWidth', 'get').mockReturnValue(200);
+      jest.spyOn(wrapper.vm.$refs.presentationViewport, 'offsetHeight', 'get').mockReturnValue(200);
+
+      wrapper.vm.setOverlayPosition();
+      expect(wrapper.vm.overlayPosition).toEqual({
+        left: `calc(50% - ${mockOverlayData.overlayDimensions.width / 2}px)`,
+        top: `calc(50% - ${mockOverlayData.overlayDimensions.height / 2}px)`,
+      });
+    });
+
+    it('sets overlay position correctly when overlay width is larger than viewports', () => {
+      jest.spyOn(wrapper.vm.$refs.presentationViewport, 'offsetWidth', 'get').mockReturnValue(50);
+      jest.spyOn(wrapper.vm.$refs.presentationViewport, 'offsetHeight', 'get').mockReturnValue(200);
+
+      wrapper.vm.setOverlayPosition();
+      expect(wrapper.vm.overlayPosition).toEqual({
+        left: '0',
+        top: `calc(50% - ${mockOverlayData.overlayDimensions.height / 2}px)`,
+      });
+    });
+
+    it('sets overlay position correctly when overlay height is larger than viewports', () => {
+      jest.spyOn(wrapper.vm.$refs.presentationViewport, 'offsetWidth', 'get').mockReturnValue(200);
+      jest.spyOn(wrapper.vm.$refs.presentationViewport, 'offsetHeight', 'get').mockReturnValue(50);
+
+      wrapper.vm.setOverlayPosition();
+      expect(wrapper.vm.overlayPosition).toEqual({
+        left: `calc(50% - ${mockOverlayData.overlayDimensions.width / 2}px)`,
+        top: '0',
+      });
+    });
+  });
+});

ee/spec/frontend/design_management/pages/design/__snapshots__/index_spec.js.snap

@@ -15,19 +15,11 @@ exports[`Design management design index page renders design index 1`] = `
      
     <!---->
      
-    <div
-      class="d-flex flex-column h-100 mh-100 position-relative"
-    >
-      <design-image-stub
-        image="test.jpg"
-        name="test.jpg"
-      />
-       
-      <design-overlay-stub
-        notes="[object Object]"
-        position="[object Object]"
-      />
-    </div>
+    <design-presentation-stub
+      discussions="[object Object]"
+      image="test.jpg"
+      imagename="test.jpg"
+    />
   </div>
    
   <div
@@ -110,19 +102,11 @@ exports[`Design management design index page with error GlAlert is rendered in c
       </gl-alert-stub>
     </div>
      
-    <div
-      class="d-flex flex-column h-100 mh-100 position-relative"
-    >
-      <design-image-stub
-        image="test.jpg"
-        name="test.jpg"
-      />
-       
-      <design-overlay-stub
-        notes=""
-        position="[object Object]"
-      />
-    </div>
+    <design-presentation-stub
+      discussions=""
+      image="test.jpg"
+      imagename="test.jpg"
+    />
   </div>
    
   <div