@cgj/k-view
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<h1><a href="../../index.html">All files</a> / <a href="index.html">src/utils</a> drag.js</h1>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">import Event from './eventHandler'
const drag = <span class="cstat-no" title="statement not covered" ><span class="fstat-no" title="function not covered" >(e</span>l,downEl)=>{</span>
let {innerHeight:height,innerWidth:width} = <span class="cstat-no" title="statement not covered" >window;</span>
const {clientHeight,clientWidth} = <span class="cstat-no" title="statement not covered" >el;</span>
const maxLeft = <span class="cstat-no" title="statement not covered" >width -clientWidth;</span>
const maxTop = <span class="cstat-no" title="statement not covered" >height - clientHeight;</span>
<span class="cstat-no" title="statement not covered" > el.style.position = "fixed";</span>
<span class="cstat-no" title="statement not covered" > downEl.style.cursor = "move";</span>
const _el_cb = <span class="cstat-no" title="statement not covered" ><span class="fstat-no" title="function not covered" >(e</span>v)=>{</span>
const e = <span class="cstat-no" title="statement not covered" >ev||window.event;</span>
const posLeft = <span class="cstat-no" title="statement not covered" >e.clientX - el.offsetLeft;</span>
const posTop =<span class="cstat-no" title="statement not covered" >e.clientY - el.offsetTop; </span>
const _move_cb = <span class="cstat-no" title="statement not covered" ><span class="fstat-no" title="function not covered" >(e</span>vent)=>{</span>
const _e = <span class="cstat-no" title="statement not covered" >event||window.event;</span>
let curX = <span class="cstat-no" title="statement not covered" >_e.clientX - posLeft;</span>
let curY = <span class="cstat-no" title="statement not covered" >_e.clientY - posTop;</span>
<span class="cstat-no" title="statement not covered" > curX = curX<=0?0:(curX>=maxLeft?maxLeft:curX);</span>
<span class="cstat-no" title="statement not covered" > curY = curY<=0?0:(curY>=maxTop?maxTop:curY);</span>
<span class="cstat-no" title="statement not covered" > el.style.margin = 0;</span>
<span class="cstat-no" title="statement not covered" > el.style.left = `${curX}px`;</span>
<span class="cstat-no" title="statement not covered" > el.style.top = `${curY}px`;</span>
}
const _del_move = <span class="cstat-no" title="statement not covered" ><span class="fstat-no" title="function not covered" >()</span>=>{</span>
<span class="cstat-no" title="statement not covered" > Event.del(document,"mousemove",_move_cb)</span>
<span class="cstat-no" title="statement not covered" > Event.del(document,"mouseup",_del_move)</span>
<span class="cstat-no" title="statement not covered" > downEl.style.cursor = "normal";</span>
}
<span class="cstat-no" title="statement not covered" > Event.add(document,"mousemove",_move_cb)</span>
<span class="cstat-no" title="statement not covered" > Event.add(document,"mouseup",_del_move)</span>
<span class="cstat-no" title="statement not covered" > return false;</span>
}
<span class="cstat-no" title="statement not covered" > Event.add(downEl,"mousedown",_el_cb)</span>
}
export default drag;</pre></td></tr></table></pre>
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