322 lines
9.8 KiB
Vue
322 lines
9.8 KiB
Vue
<script>
|
|
import { throttle } from 'lodash';
|
|
import DesignImage from './image.vue';
|
|
import DesignOverlay from './design_overlay.vue';
|
|
|
|
const CLICK_DRAG_BUFFER_PX = 2;
|
|
|
|
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,
|
|
},
|
|
scale: {
|
|
type: Number,
|
|
required: false,
|
|
default: 1,
|
|
},
|
|
resolvedDiscussionsExpanded: {
|
|
type: Boolean,
|
|
required: true,
|
|
},
|
|
},
|
|
data() {
|
|
return {
|
|
overlayDimensions: null,
|
|
overlayPosition: null,
|
|
currentAnnotationPosition: null,
|
|
zoomFocalPoint: {
|
|
x: 0,
|
|
y: 0,
|
|
width: 0,
|
|
height: 0,
|
|
},
|
|
initialLoad: true,
|
|
lastDragPosition: null,
|
|
isDraggingDesign: false,
|
|
};
|
|
},
|
|
computed: {
|
|
discussionStartingNotes() {
|
|
return this.discussions.map(discussion => ({
|
|
...discussion.notes[0],
|
|
index: discussion.index,
|
|
}));
|
|
},
|
|
currentCommentForm() {
|
|
return (this.isAnnotating && this.currentAnnotationPosition) || null;
|
|
},
|
|
presentationStyle() {
|
|
return {
|
|
cursor: this.isDraggingDesign ? 'grabbing' : undefined,
|
|
};
|
|
},
|
|
},
|
|
beforeDestroy() {
|
|
const { presentationViewport } = this.$refs;
|
|
if (!presentationViewport) return;
|
|
|
|
presentationViewport.removeEventListener('scroll', this.scrollThrottled, false);
|
|
},
|
|
mounted() {
|
|
const { presentationViewport } = this.$refs;
|
|
if (!presentationViewport) return;
|
|
|
|
this.scrollThrottled = throttle(() => {
|
|
this.shiftZoomFocalPoint();
|
|
}, 400);
|
|
|
|
presentationViewport.addEventListener('scroll', this.scrollThrottled, false);
|
|
},
|
|
methods: {
|
|
syncCurrentAnnotationPosition() {
|
|
if (!this.currentAnnotationPosition) return;
|
|
|
|
const widthRatio = this.overlayDimensions.width / this.currentAnnotationPosition.width;
|
|
const heightRatio = this.overlayDimensions.height / this.currentAnnotationPosition.height;
|
|
const x = this.currentAnnotationPosition.x * widthRatio;
|
|
const y = this.currentAnnotationPosition.y * heightRatio;
|
|
|
|
this.currentAnnotationPosition = this.getAnnotationPositon({ x, y });
|
|
},
|
|
setOverlayDimensions(overlayDimensions) {
|
|
this.overlayDimensions = overlayDimensions;
|
|
|
|
// every time we set overlay dimensions, we need to
|
|
// update the current annotation as well
|
|
this.syncCurrentAnnotationPosition();
|
|
},
|
|
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% - ${this.overlayDimensions.height / 2}px)`,
|
|
};
|
|
|
|
// if the overlay overflows, then don't center
|
|
if (this.overlayDimensions.width > presentationViewport.offsetWidth) {
|
|
this.overlayPosition.left = '0';
|
|
}
|
|
if (this.overlayDimensions.height > presentationViewport.offsetHeight) {
|
|
this.overlayPosition.top = '0';
|
|
}
|
|
},
|
|
/**
|
|
* Return a point that represents the center of an
|
|
* overflowing child element w.r.t it's parent
|
|
*/
|
|
getViewportCenter() {
|
|
const { presentationViewport } = this.$refs;
|
|
if (!presentationViewport) return {};
|
|
|
|
// get height of scroll bars (i.e. the max values for scrollTop, scrollLeft)
|
|
const scrollBarWidth = presentationViewport.scrollWidth - presentationViewport.offsetWidth;
|
|
const scrollBarHeight = presentationViewport.scrollHeight - presentationViewport.offsetHeight;
|
|
|
|
// determine how many child pixels have been scrolled
|
|
const xScrollRatio =
|
|
presentationViewport.scrollLeft > 0 ? presentationViewport.scrollLeft / scrollBarWidth : 0;
|
|
const yScrollRatio =
|
|
presentationViewport.scrollTop > 0 ? presentationViewport.scrollTop / scrollBarHeight : 0;
|
|
const xScrollOffset =
|
|
(presentationViewport.scrollWidth - presentationViewport.offsetWidth - 0) * xScrollRatio;
|
|
const yScrollOffset =
|
|
(presentationViewport.scrollHeight - presentationViewport.offsetHeight - 0) * yScrollRatio;
|
|
|
|
const viewportCenterX = presentationViewport.offsetWidth / 2;
|
|
const viewportCenterY = presentationViewport.offsetHeight / 2;
|
|
const focalPointX = viewportCenterX + xScrollOffset;
|
|
const focalPointY = viewportCenterY + yScrollOffset;
|
|
|
|
return {
|
|
x: focalPointX,
|
|
y: focalPointY,
|
|
};
|
|
},
|
|
/**
|
|
* Scroll the viewport such that the focal point is positioned centrally
|
|
*/
|
|
scrollToFocalPoint() {
|
|
const { presentationViewport } = this.$refs;
|
|
if (!presentationViewport) return;
|
|
|
|
const scrollX = this.zoomFocalPoint.x - presentationViewport.offsetWidth / 2;
|
|
const scrollY = this.zoomFocalPoint.y - presentationViewport.offsetHeight / 2;
|
|
|
|
presentationViewport.scrollTo(scrollX, scrollY);
|
|
},
|
|
scaleZoomFocalPoint() {
|
|
const { x, y, width, height } = this.zoomFocalPoint;
|
|
const widthRatio = this.overlayDimensions.width / width;
|
|
const heightRatio = this.overlayDimensions.height / height;
|
|
|
|
this.zoomFocalPoint = {
|
|
x: Math.round(x * widthRatio * 100) / 100,
|
|
y: Math.round(y * heightRatio * 100) / 100,
|
|
...this.overlayDimensions,
|
|
};
|
|
},
|
|
shiftZoomFocalPoint() {
|
|
this.zoomFocalPoint = {
|
|
...this.getViewportCenter(),
|
|
...this.overlayDimensions,
|
|
};
|
|
},
|
|
onImageResize(imageDimensions) {
|
|
this.setOverlayDimensions(imageDimensions);
|
|
this.setOverlayPosition();
|
|
|
|
this.$nextTick(() => {
|
|
if (this.initialLoad) {
|
|
// set focal point on initial load
|
|
this.shiftZoomFocalPoint();
|
|
this.initialLoad = false;
|
|
} else {
|
|
this.scaleZoomFocalPoint();
|
|
this.scrollToFocalPoint();
|
|
}
|
|
});
|
|
},
|
|
getAnnotationPositon(coordinates) {
|
|
const { x, y } = coordinates;
|
|
const { width, height } = this.overlayDimensions;
|
|
return {
|
|
x: Math.round(x),
|
|
y: Math.round(y),
|
|
width: Math.round(width),
|
|
height: Math.round(height),
|
|
};
|
|
},
|
|
openCommentForm(coordinates) {
|
|
this.currentAnnotationPosition = this.getAnnotationPositon(coordinates);
|
|
this.$emit('openCommentForm', this.currentAnnotationPosition);
|
|
},
|
|
closeCommentForm() {
|
|
this.currentAnnotationPosition = null;
|
|
this.$emit('closeCommentForm');
|
|
},
|
|
moveNote({ noteId, discussionId, coordinates }) {
|
|
const position = this.getAnnotationPositon(coordinates);
|
|
this.$emit('moveNote', { noteId, discussionId, position });
|
|
},
|
|
onPresentationMousedown({ clientX, clientY }) {
|
|
if (!this.isDesignOverflowing()) return;
|
|
|
|
this.lastDragPosition = {
|
|
x: clientX,
|
|
y: clientY,
|
|
};
|
|
},
|
|
getDragDelta(clientX, clientY) {
|
|
return {
|
|
deltaX: this.lastDragPosition.x - clientX,
|
|
deltaY: this.lastDragPosition.y - clientY,
|
|
};
|
|
},
|
|
exceedsDragThreshold(clientX, clientY) {
|
|
const { deltaX, deltaY } = this.getDragDelta(clientX, clientY);
|
|
|
|
return Math.abs(deltaX) > CLICK_DRAG_BUFFER_PX || Math.abs(deltaY) > CLICK_DRAG_BUFFER_PX;
|
|
},
|
|
shouldDragDesign(clientX, clientY) {
|
|
return (
|
|
this.lastDragPosition &&
|
|
(this.isDraggingDesign || this.exceedsDragThreshold(clientX, clientY))
|
|
);
|
|
},
|
|
onPresentationMousemove({ clientX, clientY }) {
|
|
const { presentationViewport } = this.$refs;
|
|
if (!presentationViewport || !this.shouldDragDesign(clientX, clientY)) return;
|
|
|
|
this.isDraggingDesign = true;
|
|
|
|
const { scrollLeft, scrollTop } = presentationViewport;
|
|
const { deltaX, deltaY } = this.getDragDelta(clientX, clientY);
|
|
presentationViewport.scrollTo(scrollLeft + deltaX, scrollTop + deltaY);
|
|
|
|
this.lastDragPosition = {
|
|
x: clientX,
|
|
y: clientY,
|
|
};
|
|
},
|
|
onPresentationMouseup() {
|
|
this.lastDragPosition = null;
|
|
this.isDraggingDesign = false;
|
|
},
|
|
isDesignOverflowing() {
|
|
const { presentationViewport } = this.$refs;
|
|
if (!presentationViewport) return false;
|
|
|
|
return (
|
|
presentationViewport.scrollWidth > presentationViewport.offsetWidth ||
|
|
presentationViewport.scrollHeight > presentationViewport.offsetHeight
|
|
);
|
|
},
|
|
},
|
|
};
|
|
</script>
|
|
|
|
<template>
|
|
<div
|
|
ref="presentationViewport"
|
|
class="gl-h-full gl-w-full gl-p-5 overflow-auto gl-relative"
|
|
:style="presentationStyle"
|
|
@mousedown="onPresentationMousedown"
|
|
@mousemove="onPresentationMousemove"
|
|
@mouseup="onPresentationMouseup"
|
|
@mouseleave="onPresentationMouseup"
|
|
@touchstart="onPresentationMousedown"
|
|
@touchmove="onPresentationMousemove"
|
|
@touchend="onPresentationMouseup"
|
|
@touchcancel="onPresentationMouseup"
|
|
>
|
|
<div class="gl-h-full gl-w-full gl-display-flex gl-align-items-center gl-relative">
|
|
<design-image
|
|
v-if="image"
|
|
:image="image"
|
|
:name="imageName"
|
|
:scale="scale"
|
|
@resize="onImageResize"
|
|
/>
|
|
<design-overlay
|
|
v-if="overlayDimensions && overlayPosition"
|
|
:dimensions="overlayDimensions"
|
|
:position="overlayPosition"
|
|
:notes="discussionStartingNotes"
|
|
:current-comment-form="currentCommentForm"
|
|
:disable-commenting="isDraggingDesign"
|
|
:resolved-discussions-expanded="resolvedDiscussionsExpanded"
|
|
@openCommentForm="openCommentForm"
|
|
@closeCommentForm="closeCommentForm"
|
|
@moveNote="moveNote"
|
|
/>
|
|
</div>
|
|
</div>
|
|
</template>
|