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warstwy.js
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Text File
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2000-07-30
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7KB
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198 lines
// Dynamic Layer Object
// Copyright 1998 Dan Steinman
// Available at the Dynamic Duo (http://www.dansteinman.com/dynduo/)
// February 1998. Last Updated Aug. 10, 1998.
// In order to use this code you must keep this disclaimer
ns4 = (document.layers)? true:false
ie4 = (document.all)? true:false
function DynLayer(id,nestref) {
if (ns4) {
this.css = (nestref)? eval("document."+nestref+".document."+id) : document.layers[id]
this.x = this.css.left
this.y = this.css.top
}
else if (ie4) {
this.css = document.all[id].style
this.x = this.css.pixelLeft
this.y = this.css.pixelTop
}
this.moveTo = DynLayerMoveTo
this.moveBy = DynLayerMoveBy
this.show = DynLayerShow
this.hide = DynLayerHide
this.addon = DynLayerAddon
this.addon(id,nestref)
}
function DynLayerMoveTo(x,y) {
if (x!=null) {
this.x = x
this.css.left = this.x
}
if (y!=null) {
this.y = y
this.css.top = this.y
}
}
function DynLayerMoveBy(x,y) {
this.moveTo(this.x+x,this.y+y)
}
function DynLayerShow() {
this.css.visibility = (ns4)? "show" : "visible"
}
function DynLayerHide() {
this.css.visibility = (ns4)? "hide" : "hidden"
}
function DynLayerAddon(id,nestref) {
this.id = id
this.nestref = nestref
this.w = (ns4)? this.css.clip.width : this.css.pixelWidth
this.h = (ns4)? this.css.clip.height : this.css.pixelHeight
this.doc = (ns4)? this.css.document : document
this.event = (ns4)? this.css : document.all[id]
this.obj = id + "DynLayer"
eval(this.obj + "=this")
this.slideInit = DynLayerSlideInit
this.clipInit = DynLayerClipInit
this.wipeInit = DynLayerWipeInit
}
function DynLayerSlideInit() {
this.slideTo = DynLayerSlideTo
this.slideBy = DynLayerSlideBy
this.slideStart = DynLayerSlideStart
this.slide = DynLayerSlide
}
function DynLayerSlideTo(endx,endy,inc,speed,fn) {
if (endx==null) endx = this.x
if (endy==null) endy = this.y
var distx = endx-this.x
var disty = endy-this.y
this.slideStart(endx,endy,distx,disty,inc,speed,fn)
}
function DynLayerSlideBy(distx,disty,inc,speed,fn) {
var endx = this.x + distx
var endy = this.y + disty
this.slideStart(endx,endy,distx,disty,inc,speed,fn)
}
function DynLayerSlideStart(endx,endy,distx,disty,inc,speed,fn) {
if (this.slideActive) return
var num = Math.sqrt(Math.pow(distx,2) + Math.pow(disty,2))/inc
var dx = distx/num
var dy = disty/num
if (!fn) fn = null
this.slideActive = true
this.slide(dx,dy,endx,endy,num,1,speed,fn)
}
function DynLayerSlide(dx,dy,endx,endy,num,i,speed,fn) {
if (!this.slideActive) return
if (i++ < num) {
this.moveBy(dx,dy)
setTimeout(this.obj+".slide("+dx+","+dy+","+endx+","+endy+","+num+","+i+","+speed+",\""+fn+"\")",speed)
}
else {
this.slideActive = false
this.moveTo(endx,endy)
eval(fn)
}
}
function DynLayerClipInit(clipTop,clipRight,clipBottom,clipLeft) {
this.clipTo = DynLayerClipTo
this.clipBy = DynLayerClipBy
this.clipValues = DynLayerClipValues
if (ie4) {
if (arguments.length==4) this.clipTo(clipTop,clipRight,clipBottom,clipLeft)
else this.clipTo(0,this.w,this.h,0)
}
}
function DynLayerClipTo(t,r,b,l) {
if (t==null) t = this.clipValues('t')
if (r==null) r = this.clipValues('r')
if (b==null) b = this.clipValues('b')
if (l==null) l = this.clipValues('l')
if (ns4) {
this.css.clip.top = t
this.css.clip.right = r
this.css.clip.bottom = b
this.css.clip.left = l
}
else if (ie4) this.css.clip = "rect("+t+"px "+r+"px "+b+"px "+l+"px)"
}
function DynLayerClipBy(t,r,b,l) {
this.clipTo(this.clipValues('t')+t,this.clipValues('r')+r,this.clipValues('b')+b,this.clipValues('l')+l)
}
function DynLayerClipValues(which) {
if (ie4) var clipv = this.css.clip.split("rect(")[1].split(")")[0].split("px")
if (which=="t") return (ns4)? this.css.clip.top : Number(clipv[0])
if (which=="r") return (ns4)? this.css.clip.right : Number(clipv[1])
if (which=="b") return (ns4)? this.css.clip.bottom : Number(clipv[2])
if (which=="l") return (ns4)? this.css.clip.left : Number(clipv[3])
}
function DynLayerWipeInit(clipTop,clipRight,clipBottom,clipLeft) {
if (arguments.length==4) this.clipInit(clipTop,clipRight,clipBottom,clipLeft)
else this.clipInit()
this.wipeTo = DynLayerWipeTo
this.wipeBy = DynLayerWipeBy
this.wipeStart = DynLayerWipeStart
this.wipe = DynLayerWipe
}
function DynLayerWipeTo(endt,endr,endb,endl,num,speed,fn) {
var distt = (endt!=null)? endt-this.clipValues('t'):0
var distr = (endr!=null)? endr-this.clipValues('r'):0
var distb = (endb!=null)? endb-this.clipValues('b'):0
var distl = (endl!=null)? endl-this.clipValues('l'):0
this.wipeStart(distt,distr,distb,distl,endt,endr,endb,endl,num,speed,fn)
}
function DynLayerWipeBy(distt,distr,distb,distl,num,speed,fn) {
this.wipeStart(distt,distr,distb,distl,distt+this.clipValues('t'),distr+this.clipValues('r'),distb+this.clipValues('b'),distl+this.clipValues('l'),num,speed,fn)
}
function DynLayerWipeStart(distt,distr,distb,distl,endt,endr,endb,endl,num,speed,fn) {
if (this.wipeActive) return
if (!fn) fn = null
this.wipeActive = true
this.wipe(distt/num,distr/num,distb/num,distl/num,endt,endr,endb,endl,this.clipValues('t'),this.clipValues('r'),this.clipValues('b'),this.clipValues('l'),num,1,speed,fn)
}
function DynLayerWipe(dt,dr,db,dl,endt,endr,endb,endl,st,sr,sb,sl,num,i,speed,fn) {
if (!this.wipeActive) return
if (i++ < num) {
this.clipTo(st+i*dt,sr+i*dr,sb+i*db,sl+i*dl)
setTimeout(this.obj+".wipe("+dt+","+dr+","+db+","+dl+","+endt+","+endr+","+endb+","+endl+","+st+","+sr+","+sb+","+sl+","+num+","+i+","+speed+",\""+fn+"\")",speed)
}
else {
this.wipeActive = false
this.clipTo(endt,endr,endb,endl)
eval(fn)
}
}
function DynLayerInit(nestref) {
if (ns4) {
if (nestref) ref = eval('document.'+nestref+'.document')
else {nestref = ''; ref = document;}
for (var i=0; i<ref.layers.length; i++) {
var divname = ref.layers[i].name
var index = divname.indexOf("Div")
if (index > 0) {
eval(divname.substr(0,index)+' = new DynLayer("'+divname+'","'+nestref+'")')
}
if (ref.layers[i].document.layers.length > 0) {
DynLayerInit.refArray[DynLayerInit.refArray.length] = (nestref=='')? ref.layers[i].name : nestref+'.'+ref.layers[i].name
}
}
if (DynLayerInit.refArray.i < DynLayerInit.refArray.length) {
DynLayerInit(DynLayerInit.refArray[DynLayerInit.refArray.i++])
}
}
else if (ie4) {
for (var i=0; i<document.all.tags("DIV").length; i++) {
var divname = document.all.tags("DIV")[i].id
var index = divname.indexOf("Div")
if (index > 0) {
eval(divname.substr(0,index)+' = new DynLayer("'+divname+'")')
}
}
}
return true
}
DynLayerInit.refArray = new Array()
DynLayerInit.refArray.i = 0