yanick/vue-svg-pan-zoom
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Yanick Champoux 2018-01-10 13:01:32 -05:00
parent e2410ecc24
commit ada3302def
4 changed files with 268 additions and 3 deletions
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42
src/SvgPanZoomThumbnail.vue Normal file
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@ -0,0 +1,42 @@
<template>
<div id="thumbViewContainer">
<svg id="scopeContainer" class="thumbViewClass">
<g>
<rect id="scope" fill="red" fill-opacity="0.1" stroke="red" stroke-width="2px" x="0" y="0" width="0" height="0"/>
<line id="line1" stroke="red" stroke-width="2px" x1="0" y1="0" x2="0" y2="0"/>
<line id="line2" stroke="red" stroke-width="2px" x1="0" y1="0" x2="0" y2="0"/>
</g>
</svg>
<slot />
</div>
</template>
<script>
export const SvgPanZoomThumbnail = {};
export default SvgPanZoomThumbnail;
</script>
<style>
.thumbViewClass {
border: 1px solid black;
position: absolute;
bottom: 5px;
left: 5px;
width: 20%;
height: 30%;
margin: 3px;
padding: 3px;
overflow: hidden;
}
#thumbView {
z-index: 110;
background: white;
}
#scopeContainer {
z-index: 120;
}
</style>

24
src/index.vue
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@ -1,12 +1,20 @@
<template>
<div>
<slot />
<SvgPanZoomThumbnail v-if="has_thumbnail">
<slot name="thumbnail" />
</SvgPanZoomThumbnail>
</div>
</template>
<script>
import svg_pan_zoom from 'svg-pan-zoom';
import SvgPanZoomThumbnail from './SvgPanZoomThumbnail.vue';
export { SvgPanZoomThumbnail } from './SvgPanZoomThumbnail.vue';
import thumbnailViewer from './thumbnailViewer';
let props = {
'zoomEnabled': { type: Boolean, default: true },
'controlIconsEnabled': { type: Boolean, default: false },
@ -33,17 +41,31 @@ let props = {
export const SvgPanZoom = {
props,
components: { SvgPanZoomThumbnail },
computed: {
has_thumbnail: function() { return this.$slots.thumbnail }
},
mounted: function() {
let options = {};
Object.keys(props).filter( k => this[k] !== undefined ).forEach( k => options[k] = this[k] );
console.log(options);
if( this.has_thumbnail ) {
console.log( this.$slots.default[0].elm.id );
console.log( this.$slots.thumbnail );
thumbnailViewer({
mainViewId: this.$slots.default[0].elm.id,
thumbViewId: 'thumbView',
});
}
else {
svg_pan_zoom( this.$slots.default[0].elm , options );
}
// svg_pan_zoom( '#mainView', options );
},
};
export default SvgPanZoom;
export const SvgPanZoomThumbnail = {};
</script>

8
src/thumbnail.stories.vue
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@ -3,6 +3,10 @@
style="width: 300px; height: 500px; border:1px solid black; "
>
<RawTiger />
<RawTiger slot="thumbnail" id="thumbView" class="thumbViewClass"
style="position: absolute; width: 20%; height: 30% bottom: 5px;
left: 5px; margin: 3px; padding: 3px;"
/>
</SvgPanZoom>
</template>
@ -11,8 +15,10 @@
import { SvgPanZoom, SvgPanZoomThumbnail } from './index.vue';
import RawTiger from './RawTiger.vue';
console.log(SvgPanZoomThumbnail);
export default {
components: { SvgPanZoom, RawTiger },
components: { SvgPanZoom, RawTiger, SvgPanZoomThumbnail },
};
</script>

195
src/thumbnailViewer.js Normal file
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@ -0,0 +1,195 @@
import svgPanZoom from 'svg-pan-zoom';
export default function(options){
var getSVGDocument = function(objectElem){
var svgDoc = objectElem.contentDocument;
if(! svgDoc){
try {
svgDoc = objectElem.getSVGDocument();
}
catch(e) {
svgDoc = objectElem;
}
}
return svgDoc;
}
var bindThumbnail = function(main, thumb){
if(! window.main && main){
window.main = main;
}
if(! window.thumb && thumb){
window.thumb = thumb;
}
if(! window.main || ! window.thumb){
return;
}
var resizeTimer;
var interval = 300; //msec
window.addEventListener('resize', function(event){
if (resizeTimer !== false) {
clearTimeout(resizeTimer);
}
resizeTimer = setTimeout(function () {
window.main.resize();
window.thumb.resize();
}, interval);
});
window.main.setOnZoom(function(level){
window.thumb.updateThumbScope();
if(options.onZoom){
options.onZoom(window.main, window.thumb, level);
}
});
window.main.setOnPan(function(point){
window.thumb.updateThumbScope();
if(options.onPan){
options.onPan(window.main, window.thumb, point);
}
});
var _updateThumbScope = function (main, thumb, scope, line1, line2){
var mainPanX = main.getPan().x
, mainPanY = main.getPan().y
, mainWidth = main.getSizes().width
, mainHeight = main.getSizes().height
, mainZoom = main.getSizes().realZoom
, thumbPanX = thumb.getPan().x
, thumbPanY = thumb.getPan().y
, thumbZoom = thumb.getSizes().realZoom;
var thumByMainZoomRatio = thumbZoom / mainZoom;
var scopeX = thumbPanX - mainPanX * thumByMainZoomRatio;
var scopeY = thumbPanY - mainPanY * thumByMainZoomRatio;
var scopeWidth = mainWidth * thumByMainZoomRatio;
var scopeHeight = mainHeight * thumByMainZoomRatio;
scope.setAttribute("x", scopeX + 1);
scope.setAttribute("y", scopeY + 1);
scope.setAttribute("width", scopeWidth - 2);
scope.setAttribute("height", scopeHeight - 2);
/*
line1.setAttribute("x1", scopeX + 1);
line1.setAttribute("y1", scopeY + 1);
line1.setAttribute("x2", scopeX + 1 + scopeWidth - 2);
line1.setAttribute("y2", scopeY + 1 + scopeHeight - 2);
line2.setAttribute("x1", scopeX + 1);
line2.setAttribute("y1", scopeY + 1 + scopeHeight - 2);
line2.setAttribute("x2", scopeX + 1 + scopeWidth - 2);
line2.setAttribute("y2", scopeY + 1);
*/
};
window.thumb.updateThumbScope = function(){
var scope = document.getElementById('scope');
var line1 = document.getElementById('line1');
var line2 = document.getElementById('line2');
_updateThumbScope(window.main, window.thumb, scope, line1, line2);
}
window.thumb.updateThumbScope();
var _updateMainViewPan = function(clientX, clientY, scopeContainer, main, thumb){
var dim = scopeContainer.getBoundingClientRect()
, mainWidth = main.getSizes().width
, mainHeight = main.getSizes().height
, mainZoom = main.getSizes().realZoom
, thumbWidth = thumb.getSizes().width
, thumbHeight = thumb.getSizes().height
, thumbZoom = thumb.getSizes().realZoom;
var thumbPanX = clientX - dim.left - thumbWidth / 2;
var thumbPanY = clientY - dim.top - thumbHeight / 2;
var mainPanX = - thumbPanX * mainZoom / thumbZoom;
var mainPanY = - thumbPanY * mainZoom / thumbZoom;
main.pan({x:mainPanX, y:mainPanY});
};
var updateMainViewPan = function(evt){
if(evt.which == 0 && evt.button == 0){
return false;
}
var scopeContainer = document.getElementById('scopeContainer');
_updateMainViewPan(evt.clientX, evt.clientY, scopeContainer, window.main, window.thumb);
}
var scopeContainer = document.getElementById('scopeContainer');
scopeContainer.addEventListener('click', function(evt){
updateMainViewPan(evt);
});
scopeContainer.addEventListener('mousemove', function(evt){
updateMainViewPan(evt);
});
};
var mainViewObjectElem = document.getElementById(options.mainViewId);
console.log(mainViewObjectElem);
mainViewObjectElem.addEventListener("load", function(){
var mainViewSVGDoc = getSVGDocument(mainViewObjectElem);
if(options.onMainViewSVGLoaded){
options.onMainViewSVGLoaded(mainViewSVGDoc);
}
var beforePan = function(oldPan, newPan){
var stopHorizontal = false
, stopVertical = false
, gutterWidth = 100
, gutterHeight = 100
// Computed variables
, sizes = this.getSizes()
, leftLimit = -((sizes.viewBox.x + sizes.viewBox.width) * sizes.realZoom) + gutterWidth
, rightLimit = sizes.width - gutterWidth - (sizes.viewBox.x * sizes.realZoom)
, topLimit = -((sizes.viewBox.y + sizes.viewBox.height) * sizes.realZoom) + gutterHeight
, bottomLimit = sizes.height - gutterHeight - (sizes.viewBox.y * sizes.realZoom);
let customPan = {};
customPan.x = Math.max(leftLimit, Math.min(rightLimit, newPan.x));
customPan.y = Math.max(topLimit, Math.min(bottomLimit, newPan.y));
return customPan;
};
var main = svgPanZoom('#'+options.mainViewId, {
zoomEnabled: true,
controlIconsEnabled: true,
fit: false,
center: true,
beforePan: beforePan
});
bindThumbnail(main, undefined);
if(options.onMainViewShown){
options.onMainViewShown(mainViewSVGDoc, main);
}
}, false);
var thumbViewObjectElem = document.getElementById(options.thumbViewId);
thumbViewObjectElem.addEventListener("load", function(){
var thumbViewSVGDoc = getSVGDocument(thumbViewObjectElem);
if(options.onThumbnailSVGLoaded){
options.onThumbnailSVGLoaded(thumbViewSVGDoc);
}
var thumb = svgPanZoom('#'+options.thumbViewId, {
zoomEnabled: false,
panEnabled: false,
controlIconsEnabled: false,
dblClickZoomEnabled: false,
preventMouseEventsDefault: true,
});
bindThumbnail(undefined, thumb);
if(options.onThumbnailShown){
options.onThumbnailShown(thumbViewSVGDoc, thumb);
}
}, false);
};