Detaillierte Erläuterung von ImageView.js, einer großen Bildbetrachtungskomponente, die den QQ-Bereich von Mobiltelefonen basierend auf den Fähigkeiten von zepto.js_javascript imitiert

Aufrufmethode: ImageView(index,imgData) --index-Parameter ist der vom Bild standardmäßig angezeigte Indexwert, Typ ist Zahl --imaData-Parameter ist Bild-URL-Array, Typ ist Array

Stellen Sie die Datei zepto.js vor, bevor Sie sie verwenden

Der spezifische Code von ImageView.js lautet wie folgt:

Code kopieren Der Code lautet wie folgt:

/*
* ImageView v1.0.0
* --Anzeige großer Bilder basierend auf zepto.js
* --Call-Methode ImageView(index,imgDada)
* --index Bild-Standardwert-Anzeigeindex, Zahl --imgData Bild-URL-Array, Array
* */
var ImageView=(function(window,$){
var _this=$("#slideView"),_ImgData=[],_index=0,_length=0,
​​​​ _start=[],_org=[],_orgTime=null,
​​​​ _lastTapDate=null,
​​​​ _zoom=1,_zoomXY=[0,0],_transX=null,
​​​​ _advancedSupport = false,
​​​​ _doubleDistOrg=1,_doubleZoomOrg=1,isDoubleZoom = false,
​​​​ isSlide=true,isDrag=false,timer=null,
       winW=window.innerWidth,winH=window.innerHeight;
/**
* Ereignisobjektereignis
​​*/
var Event={
         touchstart:function(e){
              e.preventDefault();
If (_advancedSupport && e.touches && e.touches.length >= 2) {
              var img = getImg();
                  $(img).css({"-webkit-transitionDuration": "0ms", "transitionDuration": "0ms"});
                   _doubleZoomOrg = _zoom;
                   _doubleDistOrg = getDist(e.touches[0].pageX, e.touches[0].pageY, e.touches[1].pageX, e.touches[1].pageY);
IsDoublezoom = true;
                 zurück
            }
e = e.touches ? e.touches[0] : e;
               isDoubleZoom = false;
​​​​​​ _start = [e.pageX, e.pageY];
             _org = [e.pageX, e.pageY];
​​​​​​​ _orgTime = Date.now();
​​​​​​ _transX = -_index * winW;
               if(_zoom!=1){
                   _zoomXY = _zoomXY || [0, 0];
                 _orgZoomXY = [_zoomXY[0], _zoomXY[1]];
              var img = getImg();
                  img&&($(img).css({"-webkit-transitionDuration": "0ms", "transitionDuration": "0ms"}));
                     isDrag = true
               }sonst{
​​​​​​​ _this.find(".pv-inner").css({"-webkit-transitionDuration": "0ms", "transitionDuration": "0ms"});
                    isSlide = true
            }
},
        touchmove:function(e){
              e.preventDefault();
If (_advancedSupport && e.touches && e.touches.length >= 2) {
            var newDist = getDist(e.touches[0].pageX, e.touches[0].pageY, e.touches[1].pageX, e.touches[1].pageY);
​​​​​​​ _zoom = (newDist/_doubleDistOrg) * _doubleZoomOrg
                var img = getImg();
                $(img).css({"-webkit-transitionDuration": "0ms",transitionDuration": "0ms"});
                if (_zoom < 1) {
                    _zoom = 1;
                    _zoomXY = [0, 0];
                    $(img).css({"-webkit-transitionDuration": "200ms", "transitionDuration": "200ms"})
                } else if (_zoom >getScale(img) * 2){
                     _zoom = getScale(img) * 2;
                }
                $(img).css({"-webkit-transform": "scale(" _zoom ") Translate(" _zoomXY[0] "px," _zoomXY[1] "px)","transform": "scale(" _zoom ") Translate(" _zoomXY[0] "px," _zoomXY[1] "px)"});
                zurück
            }
            if (isDoubleZoom){
                zurück;
            }
            e = e.touches ? e.touches[0] : e;
            if (_zoom != 1) {
                var deltaX = (e.pageX - _start[0]) / _zoom;
                var deltaY = (e.pageY - _start[1]) / _zoom;
                _start = [e.pageX, e.pageY];
                var img = getImg();
                var newWidth = img.clientWidth *_zoom,
                    newHeight = img.clientHeight * _zoom;
                var borderX = (newWidth - winW) / 2 / _zoom,
                    borderY = (newHeight - winH) / 2 / _zoom;
                (borderX >= 0)&&(_zoomXY[0] < -borderX || _zoomXY[0] > borderX)&&(deltaX /= 3);
                (borderY > 0)&&(_zoomXY[1] < -borderY || _zoomXY[1] > borderY)&&(deltaY /= 3);
                _zoomXY[0] = deltaX;
                _zoomXY[1] = deltaY;
                (_length == 1 && newWidth < winW||newWidth < winW)&&(_zoomXY[0] = 0);
                (_length == 1 && newHeight < winH||newHeight < winH)&&(_zoomXY[1] = 0);
                $(img).css({"-webkit-transform": "scale(" _zoom ") Translate(" _zoomXY[0]
                    "px," _zoomXY[1] "px)","transform": "scale(" _zoom ") translator(" _zoomXY[0]
                    "px," _zoomXY[1] "px)"})
            }else{
                if (!isSlide) return;
                var deltaX = e.pageX - _start[0];
                (_transX > 0 || _transX < -winW * (_length - 1))&&(deltaX /= 4);
                _transX = -_index * winW deltaX;
                _this.find(".pv-inner").css({"-webkit-transform":"translate(" _transX "px,0px) translatorZ(0)"});
            }
        },
        touchend:function(e){
            if (isDoubleZoom) {
                zurück;
            }
            if (_zoom != 1) {
                if (!isDrag){return;}
                var img = getImg();
                var newWidth = img.clientWidth *_zoom,
                    newHeight = img.clientHeight * _zoom;
                var borderX = (newWidth - winW) / 2 / _zoom,
                    borderY = (newHeight - winH) / 2 / _zoom;
                if (_length > 1 && borderX >= 0) {
                    var updateDelta = 0;
                    var switchDelta = winW / 6;
                    if (_zoomXY[0] < -borderX - switchDelta / _zoom && _index < _length - 1){
                        updateDelta = 1;
                    }else if (_zoomXY[0] > borderX switchDelta / _zoom && _index > 0){
                        updateDelta = -1;
                    }
                    if (updateDelta != 0) {
                        scaleDown(img);
                        changeIndex(_index updateDelta);
                        zurück
                    }
                }
                var delta = Date.now() - _orgTime;
                if (Delta < 300) {
                    (Delta <= 10)&&(Delta = 10);
                    var deltaDis = Math.pow(180 / delta, 2);
                    _zoomXY[0] = (_zoomXY[0] - _orgZoomXY[0]) * deltaDis;
                    _zoomXY[1] = (_zoomXY[1] - _orgZoomXY[1]) * deltaDis;
                    $(img) })
                } else{
                    $(img).css({"-webkit-transition": "200ms linear","transition": "200ms linear"});
                }
                if (borderX >= 0){
                    if (_zoomXY[0] < -borderX){
                        _zoomXY[0] = -borderX;
                    }else if (_zoomXY[0] > borderX){
                        _zoomXY[0] = borderX;
                    }
                }
                if (borderY > 0){
                    if (_zoomXY[1] < -borderY){
                        _zoomXY[1] = -borderY;
                    }else if (_zoomXY[1] >borderY){
                        _zoomXY[1] = borderY;
                    }
                }
                if (Math.abs(_zoomXY[0]) < 10) {
                    $(img).css({"-webkit-transform": "scale(" _zoom ") Translate(0px," _zoomXY[1] "px)","transform": "scale(" _zoom ") Translate(0px ," _zoomXY[1] "px)"});
                    zurück
                } else{
                    $(img).css({"-webkit-transform": "scale(" _zoom ") Translate(" _zoomXY[0] "px," _zoomXY[1] "px)","transform": "scale(" _zoom ") Translate(" _zoomXY[0] "px," _zoomXY[1] "px)"});
                }
                isDrag = false
            }else{
                if (!isSlide){ return;}
                var deltaX = _transX - -_index * winW;
                var updateDelta = 0;
                if (deltaX > 50){
                    updateDelta = -1;
                }else if(deltaX < -50){
                    updateDelta = 1;
                }
                _index=_index updateDelta;
                changeIndex(_index);
                isSlide =false
            }
        },
        click:function(e){
            _zoom=1;
            _zoomXY=[0,0];
            _this.css("opacity","0");
            timer=setTimeout(function(){
                _this.css({"display":""}).html("");
                unbind();
            },150)
        },
        dobelTap:function(e){
            clearTimeout(timer);
            var now = neues Datum;
            if (jetzt - _lastTapDate < 500){
                zurück;
            }
            _lastTapDate = now;
            var img = getImg();
            if (!img){
                zurück;
            }
            if (_zoom != 1){
                scaleDown(img);
            }else{
                scaleUp(img);
            }
        },
        setView:function(e){
            winW=window.innerWidth;
            winH=window.innerHeight;
            _this.width(window.innerWidth).height(window.innerHeight);
            Translate((-_index*window.innerWidth),0,0,$(".pv-inner")[0]);
            scaleDown(getImg())
        }
    };
    var handleEvent=function(e){
        Schalter (e.type){
            Fall „touchstart“:
                Event.touchstart(e);
                Pause;
            Fall „touchmove“:
                Event.touchmove(e);
                Pause;
            Fall „touchcancel“:
            Fall „touchend“:
                Event.touchend(e);
                Pause;
            Fall „orientierungsänderung“:
            Fall „Größe ändern“:
                Event.setView(e);
                Pause
        }
    };
    /**
* Bindungsereignis
​​*/
    var bind=function(){
        _this.on("singleTap",function(e){
            e.preventDefault();
            var now = neues Datum;
            if (jetzt - _lastTapDate < 500){
                zurückkehren;           
            }
            _lastTapDate = now;
            Event.click(e);
            return false;
        }).on("doubleTap", function(e) {
            e.preventDefault();
            Event.dobelTap(e);
            return false;
        });
        _this.on("touchstart touchmove touchend touchcancel", function(e) {
            handleEvent(e);
        });
        Event.setView();
        „onorientationchange“ im Fenster? window.addEventListener("orientationchange",Event.setView,false) : window.addEventListener("resize",Event.setView,false);
    };
    /**
* * Ereignis verwerfen
​​*/
    var unbind= function() {
         _this.off();
        „onorientationchange“ im Fenster? window.removeEventListener("orientationchange",Event.setView, false) : window.removeEventListener("resize",Event.setView, false)
    };
    var getDist= function(x1, y1, x2, y2) {
        Rückgabe Math.sqrt(Math.pow(x2 - x1, 2) Math.pow(y2 - y1, 2), 2)
    }
    /**
* Bildzoom
​​*/
    var getScale=function(img) {
        var h = img.naturalHeight, w = img.naturalWidth,
        Scale=w*h/(img.clientHeight*img.clientWidth);
        Return Scale;
    };
    var scaleUp=function(img) {
        var scale = getScale(img);
        wenn (Skala > 1)
            $(img).css({"-webkit-transform": "scale(" scale ")","transform": "scale(" scale ")","-webkit-transition": "200ms","transition ": "200ms"});
        _zoom = Maßstab;
    };
    var scaleDown=function(img) {
        _zoom = 1;
        _zoomXY = [0, 0];
        _doubleDistOrg = 1;
        _doubleZoomOrg = 1;
        $(img).css({"-webkit-transform": "scale(1)", "transform": "scale(1)", "-webkit-transition": "200ms", "transition": "200ms "});
    };
    /**
* Gleiteffekt
* dist
​​*/
    var translator = function( distX,distY,speed,ele) {
        if( !!ele ){ ele=ele.style; }else{ return; }
        ele.webkitTransitionDuration =  ele.MozTransitionDuration = ele.msTransitionDuration = ele.OTransitionDuration = ele.transitionDuration =  speed + 'ms';
        ele.webkitTransform = 'translate(' + distX + 'px,'+distY+'px)' + 'translateZ(0)';
        ele.msTransform = ele.MozTransform = ele.OTransform = 'translateX(' + distX + 'px) translateY(' + distY + 'px)';
    };
    /**
     * 更改索引值 _index
     */
    var changeIndex=function(index,force){
        if (index < 0){
index = 0;
}else if(index >= _length){
            index =_length - 1;
        }
        _index = index;
        translate((-_index*window.innerWidth),0,force? "0" : "200" ,$(".pv-inner")[0]);
        $("#J_index").html(_index+1+"/"+_length);
        imgLoad();
    }
    /**
     * 图片获取
     */
    var getImg=function(index) {
        var img = _this.find("li").eq(index || _index).find("img");
        if (img.size() == 1){
            return img[0];
        }else{
            return null
        }
    }
    /**
     * 图片加载
     */
    var imgLoad=function(){
        if($(".pv-img").eq(_index).find("img")[0]){
            $("#J_loading").css("display","");
            return;
        }else{
            $("#J_loading").css("display","block");
            var tempImg=new Image(),w,h,set;
            tempImg.src=_ImgData[_index];
            $(".pv-img").eq(_index)[0].appendChild(tempImg);
            tempImg.onload=function(){
                $("#J_loading").css("display","");
            }
        }
    };
    /**
     * 创建大图查看Dome结构
     */
    var Create=function(){
        _this.append("

").append("

"+(_index+1)+"/"+_length+"

").append("")
        for(var i=0;i<_length;i++){
$(".pv-inner").append("

")
        }
        imgLoad();
    };
    /**
     * 大图查看初始化
     */
    var init=function(){
        !!_this[0]||$("body").append("

");
​ ​ _this=$("#slideView");
($.os.iphone || $.os.android && parseFloat($.os.version) >= 4)&&(_advancedSupport = true);
}();
/**
* * Große Bildansicht-Rückgabeschnittstellenfunktion
* ImageView(index,data)
* Index-Anfangsindexwert nubmer
* Datenbild-Array-Array
​​*/
var ImageView=function(index,data){
​​​​ _ImgData=data;
​​​​ _index=index;
_length=data.length;
//Dom-Struktur erstellen
​​​Create();
//Dom-Strukturanzeige
​ ​ _this.css("display","block");
​​​​ //Ereignis binden
         bind();
}
Return ImageView;
})(window,Zepto);

　

Der von ImageView.js verwendete CSS-Code lautet wie folgt:

Code kopieren Der Code lautet wie folgt:

/*大图查看*/
.slide-view {Hintergrund: #000;Position: fest;Breite: 100 %;Höhe: 100 %;Überlauf: versteckt;oben: 0;links: 0;z-Index: 100;Deckkraft:0;Anzeige: keine; -webkit-animation:fadeIn .2s linear vorwärts;animation:fadeIn .2s linear vorwärts;-webkit-touch-callout: none;-webkit-transform-style: Preserve-3d; }
.slide-view .counts {position: absolute;oben: 5%;links: 0;rechts: 0;text-align: center;font-size: 0;-webkit-transform-style: Preserve-3d; }
.slide-view .counts .value {border-radius: 9px;line-height: 18px;padding: 0 6px;font-size: 11px;display: inline-block;background-color: rgba(102,102,102,.6); Farbe: #f1f1f1;}
.pv-inner {position: relative;z-index: -1;display: -webkit-box;display: box;width: 100%;height: 100%;-webkit-transition: all 350ms linear;-webkit-backface -visibility: versteckt;Übergang: alle 350 ms linear;backface-visibility: versteckt;-webkit-touch-callout: keine;-webkit-transform-style: Preserve-3d; }
.pv-inner li {text-align: center;display: -webkit-box;display: box;-webkit-box-align: center;overflow: versteckt;width: 100%;height: 100%;-webkit-touch -callout: keine;Rückseitensichtbarkeit: versteckt;-webkit-transform-style: Preserve-3d; }
.pv-inner img {max-width: 97%;max-height: 100%;-webkit-transform: Scale(1) Translate(0px,0px);transform: Scale(1) Translate(0px,0px);visibility : sichtbar;-webkit-transition: 200ms;transition: 200ms;-webkit-user-select: none;user-select: none;display: block;margin: 0 auto;backface-visibility: versteckt;-webkit-transform-style : Preserve-3D; }
@-webkit-keyframes fadeIn{
    0 %{opacity:0;}
    100 %{opacity:1;}
}
@keyframes fadeIn{
    0 %{opacity:0;}
    100 %{opacity:100%;}
}
/*--------------------Laden---------*/
.ui-loading {position: absolute;left: 50%;top: 50%;display: none;vertical-align: middle;font: 0/0 arial;margin: -5px 0 0 -10px;}
.ui-loading i {display: inline-block;width: 5px;height: 12px;background: #fff;vertical-align: top;-webkit-animation: Loading-Spin 1s unendlich linear;Animation: Loading-Spin 1s unendlich linear;}
.ui-loading i {-webkit-animation: Loading-Spin 1s unendlich linear;Animation: Loading-Spin 1s unendlich linear}
.ui-loading i.t2 {margin: 0 3px;-webkit-animation-name: Loading-spin-one;animation-name: Loading-spin-one}
.ui-loading i.t3 {-webkit-animation-name: Loading-spin-two;Animationsname: Loading-spin-two}
@-webkit-keyframes Loading-Spin {
    0 % {Deckkraft: 0}
    30 % {opacity: 1;-webkit-transform: scale(1,1.2)}
    60 % {opacity: 0;-webkit-transform: scale(1)}
    100 % {Deckkraft: 0}
}
@-webkit-keyframes Loading-Spin-One {
    0 % {Deckkraft: 0}
    20 % {Deckkraft: 0}
    50 % {opacity: 1;-webkit-transform: scale(1,1.2)}
    80 % {opacity: 0;-webkit-transform: scale(1)}
    100 % {Deckkraft: 0}
}
@-webkit-keyframes Loading-Spin-Two {
    0 % {Deckkraft: 0}
    40 % {Deckkraft: 0}
    70 % {opacity: 1;-webkit-transform: scale(1,1.2)}
    100 % {opacity: 0;-webkit-transform: scale(1)}
}
@keyframes Loading-Spin {
    0 % {Deckkraft: 0}
    30 % {opacity: 1;transform: scale(1,1.2)}
    60 % {opacity: 0;transform: scale(1)}
    100 % {Deckkraft: 0}
}
@keyframes Loading-Spin-One {
    0 % {Deckkraft: 0}
    20 % {Deckkraft: 0}
    50 % {opacity: 1;transform: scale(1,1.2)}
    80 % {opacity: 0;transform: scale(1)}
    100 % {Deckkraft: 0}
}
@keyframes Loading-Spin-Two {
    0 % {Deckkraft: 0}
    40 % {Deckkraft: 0}
    70 % {opacity: 1;transform: scale(1,1.2)}
    100 % {opacity: 0;transform: scale(1)}
}
/*--------------------Ladeende--------*/

ps:代码功能比较简单，可能会存在诸多问题。但也能勉强使用了

下用是使用ImageView.js的一个例子:

复制代码 代码如下:

          
           
                                                                                             
          


            
           
                                                                                      ;(function(){
// Holen Sie sich das Bildelement in HTML
              var aImg=document.querySelectorAll("img"),
aImgSrc=[];
//Ein Klickereignis an das Bild binden
for(var i=0,l=aImg.length;i                     aImg[i].index=i;
                     aImg[i].className = "conPic";
aImgSrc.push(aImg[i].src);
                }
for(var i=0;i<$(".conPic").length;i ){
If($(".conPic")[i].complete){
                           addTap($(".conPic")[i])
                       }else{
$(".conPic")[i].onload=function(){
                             addTap(this);
                                                                                                       }                  }
                }
Funktion addTap(obj){
$(obj).on("tap",function(){
//ImageView aufrufen
ImageView($(obj)[0].index,aImgSrc);
                     })
                }
             })();
                                                                                     



Das Obige ist der gesamte Inhalt dieses Artikels, ich hoffe, er gefällt euch allen