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<script>
import { pixeliseValue } from '../../../lib/utils/dom_utils';
import ImageViewer from '../../../content_viewer/viewers/image_viewer.vue';
export default {
components: {
ImageViewer,
},
props: {
newPath: {
type: String,
required: true,
},
oldPath: {
type: String,
required: true,
},
projectPath: {
type: String,
required: false,
default: '',
},
},
data() {
return {
onionMaxWidth: undefined,
onionMaxHeight: undefined,
onionOldImgInfo: null,
onionNewImgInfo: null,
onionDraggerPos: 0,
onionOpacity: 1,
dragging: false,
};
},
computed: {
onionMaxPixelWidth() {
return pixeliseValue(this.onionMaxWidth);
},
onionMaxPixelHeight() {
return pixeliseValue(this.onionMaxHeight);
},
onionDraggerPixelPos() {
return pixeliseValue(this.onionDraggerPos);
},
},
beforeDestroy() {
document.body.removeEventListener('mouseup', this.stopDrag);
this.$refs.dragger.removeEventListener('mousedown', this.startDrag);
},
methods: {
dragMove(e) {
if (!this.dragging) return;
const left = e.pageX - this.$refs.dragTrack.getBoundingClientRect().left;
const dragTrackWidth =
this.$refs.dragTrack.clientWidth - this.$refs.dragger.clientWidth || 100;
let leftValue = left;
if (leftValue < 0) leftValue = 0;
if (leftValue > dragTrackWidth) leftValue = dragTrackWidth;
this.onionOpacity = left / dragTrackWidth;
this.onionDraggerPos = leftValue;
},
startDrag() {
this.dragging = true;
document.body.style.userSelect = 'none';
document.body.addEventListener('mousemove', this.dragMove);
},
stopDrag() {
this.dragging = false;
document.body.style.userSelect = '';
document.body.removeEventListener('mousemove', this.dragMove);
},
prepareOnionSkin() {
if (this.onionOldImgInfo && this.onionNewImgInfo) {
this.onionMaxWidth = Math.max(
this.onionOldImgInfo.renderedWidth,
this.onionNewImgInfo.renderedWidth,
);
this.onionMaxHeight = Math.max(
this.onionOldImgInfo.renderedHeight,
this.onionNewImgInfo.renderedHeight,
);
this.onionOpacity = 1;
this.onionDraggerPos =
this.$refs.dragTrack.clientWidth - this.$refs.dragger.clientWidth || 100;
document.body.addEventListener('mouseup', this.stopDrag);
}
},
onionNewImgLoaded(imgInfo) {
this.onionNewImgInfo = imgInfo;
this.prepareOnionSkin();
},
onionOldImgLoaded(imgInfo) {
this.onionOldImgInfo = imgInfo;
this.prepareOnionSkin();
},
},
};
</script>
<template>
<div class="onion-skin view">
<div
class="onion-skin-frame"
:style="{
'width': onionMaxPixelWidth,
'height': onionMaxPixelHeight,
'user-select': dragging === true ? 'none' : '',
}">
<div
class="frame deleted"
:style="{
'width': onionMaxPixelWidth,
'height': onionMaxPixelHeight,
}">
<image-viewer
key="onionOldImg"
:render-info="false"
:path="oldPath"
:project-path="projectPath"
@imgLoaded="onionOldImgLoaded"
/>
</div>
<div
class="added frame"
ref="addedFrame"
:style="{
'opacity': onionOpacity,
'width': onionMaxPixelWidth,
'height': onionMaxPixelHeight,
}">
<image-viewer
key="onionNewImg"
:render-info="false"
:path="newPath"
:project-path="projectPath"
@imgLoaded="onionNewImgLoaded"
/>
</div>
<div class="controls">
<div class="transparent"></div>
<div
class="drag-track"
ref="dragTrack"
@mousedown="startDrag"
@mouseup="stopDrag">
<div
class="dragger"
ref="dragger"
:style="{ 'left': onionDraggerPixelPos }">
</div>
</div>
<div class="opaque"></div>
</div>
</div>
</div>
</template>
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