我正在尝试创建一个图库网页，其中图库图像成为背景，然后根据鼠标的位置滚动。
我遇到的问题是我的图像尺寸和比例不同。这是我一直在使用的：
function makeScrollable(){
$(document).bind('mousemove',function(e){
var hiddenY = $(document).height() - $(window).height();
var hiddenX = $(document).width() - $(window).width();
var top = (e.pageY/$(window).height())*hiddenY;
var left = (e.pageX/$(window).width())*hiddenX;
$(document).scrollTop(top);
$(document).scrollLeft(left);
});
}
这似乎适用于较短的图像，但对于较高的图像，鼠标仅在鼠标朝向屏幕顶部时移动。
这似乎也适用于水平滚动，但如果浏览器窗口太薄则根本不起作用。我不认为这在实际使用中存在问题，但我想找到一种方法来解决它以防万一。
所以，我想问题是，有没有办法创建一个基于鼠标位置的平滑滚动背景，无论背景图像的高度或宽度。目标是当鼠标在浏览器窗口的50％左右时，图像将显示隐藏的50％。
提前致谢 -Patrick Reynolds
这里是主要的html和javascript：
<body>
<div id="fp_gallery" class="fp_gallery">
<img src="images/1.jpg" alt="" class="fp_preview" style="display:none;"/>
<div class="fp_overlay"></div>
<div id="fp_loading" class="fp_loading"></div>
<div id="fp_next" class="fp_next"></div>
<div id="fp_prev" class="fp_prev"></div>
<div id="outer_container">
<div id="thumbScroller">
<div class="container">
<div class="content">
<div><a href="#"><img src="images/Kingfisher/Thumbs/G1Thmb.jpg" alt="images/Kingfisher/G1.jpg" class="thumb" /></a></div>
</div>
<div class="content">
<div><a href="#"><img src="images/Kingfisher/Thumbs/A1.1Thmb.jpg" alt="images/Kingfisher/A1.1.jpg" class="thumb" /></a></div>
</div>
<div class="content">
<div><a href="#"><img src="images/Kingfisher/Thumbs/A1.2Thmb.jpg" alt="images/Kingfisher/A1.2.jpg" class="thumb" /></a></div>
</div>
<div class="content">
<div><a href="#"><img src="images/Kingfisher/Thumbs/A1.3Thmb.jpg" alt="images/Kingfisher/A1.3.jpg" class="thumb" /></a></div>
</div>
<div class="content">
<div><a href="#"><img src="images/Kingfisher/Thumbs/A2.1Thmb.jpg" alt="images/Kingfisher/A2.1.jpg" class="thumb" /></a></div>
</div>
<div class="content">
<div><a href="#"><img src="images/Kingfisher/Thumbs/A2.2Thmb.jpg" alt="images/Kingfisher/A2.2.jpg" class="thumb" /></a></div>
</div>
<div class="content">
<div><a href="#"><img src="images/Kingfisher/Thumbs/A2.6Thmb.jpg" alt="images/Kingfisher/A2.6.jpg" class="thumb" /></a></div>
</div>
<div class="content">
<div><a href="#"><img src="images/Kingfisher/Thumbs/A5.1Thmb.jpg" alt="images/Kingfisher/A5.1.jpg" class="thumb" /></a></div>
</div>
<div class="content">
<div><a href="#"><img src="images/Kingfisher/Thumbs/A6.7Thmb.jpg" alt="images/Kingfisher/A6.7.jpg" class="thumb" /></a></div>
</div>
<div class="content">
<div><a href="#"><img src="images/Kingfisher/Thumbs/A8.1Thmb.jpg" alt="images/Kingfisher/A8.1.jpg" class="thumb" /></a></div>
</div>
<div class="content">
<div><a href="#"><img src="images/2.jpg" alt="images/2.jpg" class="thumb" /></a></div>
</div>
</div>
</div>
</div>
<div id="fp_thumbtoggle" class="fp_thumbtoggle">View Thumbs</div>
</div>
<div id="g_content" class="g_content">
<h1><a href="../V4.1/index.html">Back</a></h1>
<div id="g_menu" class="g_menu">
<ul>
<li>
<h3 class="AboutToggle"><a href="#">About</a></h3>
<div class="g_subitemAbout">
<span class="g_closeAbout"></span>
<h2>About</h2>
<ul>
<li>KINGFISHER ELEMENTARY SCHOOL REMODEL<span><p>L.W.P.B. Architecture - Summer Internship 2010</p></span></li>
<li>I worked on this project during my summer 2010 summer internship at L.W.P.B Architecture</li>
</ul>
</div>
<h4 class="PortfolioToggle"><a href="#">Portfolio</a></h4>
<div class="g_subitem">
<span class="g_close"></span>
<h2>Portfolio</h2>
<ul>
<li>These projects represent the majority of my schoolwork and professional experience, and are ordered starting with the most recent.</li>
<li><a href="Seattle.html">Seattle Civic Center</a></li>
<li><a href="Capitol.html">Capitol Hill Transit-Oriented Development</a></li>
<li><a href="Kingfisher.html">Kingfisher Elementary School Remodel (L.W.P.B.)</a></li>
<li><a href="Bricktown.html">Bricktown Internation Dance Studio</a></li>
<li><a href="Bosconero.html">Bosconero Multi-Use Facility</a></li>
<li><a href="OKC.html">O.K.C. Wellness Center</a></li>
<li><a href="Prarie">Prarie National Park Visitor's Center</a></li>
<li><a href="Woodward">Woodward Park Public Library</a></li>
<li><a href="Other">Other Projects</a></li>
</ul>
</div>
</li>
</ul>
</div> <!--End g_menu-->
<script type="text/javascript">
$(document).ready(function()
{
$(".g_subitemAbout").hide();
$("h3.AboutToggle").click(function()
{
$(this).toggleClass("active").next().slideToggle("slow");
return false;
});
$(".g_closeAbout").click(function()
{
$("h3.AboutToggle").toggleClass("active").next().slideToggle("slow");
return false;
});
$(".g_subitem").hide();
$("h4.PortfolioToggle").click(function()
{
$(this).toggleClass("active").next().slideToggle("slow");
return false;
});
$(".g_close").click(function()
{
$("h4.PortfolioToggle").toggleClass("active").next().slideToggle("slow");
return false;
});
});
</script>
</div> <!--End g_content--> <!--Coding for Portfolio and About menus-->
<!-- The JavaScript (Gallery) -->
<script type="text/javascript">
$(function() {
//current thumb's index being viewed
var current = -1;
//cache some elements
var $btn_thumbs = $('#fp_thumbtoggle');
var $loader = $('#fp_loading');
var $btn_next = $('#fp_next');
var $btn_prev = $('#fp_prev');
var $thumbScroller = $('#thumbScroller');
//total number of thumbs
var nmb_thumbs = $thumbScroller.find('.content').length;
//preload thumbs
var cnt_thumbs = 0;
for(var i=0;i<nmb_thumbs;++i){
var $thumb = $thumbScroller.find('.content:nth-child('+parseInt(i+1)+')');
$('<img/>').load(function(){
++cnt_thumbs;
if(cnt_thumbs == nmb_thumbs)
//display the thumbs on the bottom of the page
showThumbs(2000);
}).attr('src',$thumb.find('img').attr('src'));
}
//make the document scrollable
//when the the mouse is moved up/down
//the user will be able to see the full image
makeScrollable();
//clicking on a thumb...
$thumbScroller.find('.content').bind('click',function(e){
var $content= $(this);
var $elem = $content.find('img');
//keep track of the current clicked thumb
//it will be used for the navigation arrows
current = $content.index()+1;
//get the positions of the clicked thumb
var pos_left = $elem.offset().left;
var pos_top = $elem.offset().top;
//clone the thumb and place
//the clone on the top of it
var $clone = $elem.clone()
.addClass('clone')
.css({
'position':'fixed',
'left': pos_left + 'px',
'top': pos_top + 'px'
}).insertAfter($('BODY'));
var windowW = $(window).width();
var windowH = $(window).height();
//animate the clone to the center of the page
$clone.stop()
.animate({
'left': windowW/2 + 'px',
'top': windowH/2 + 'px',
'margin-left' :-$clone.width()/2 -5 + 'px',
'margin-top': -$clone.height()/2 -5 + 'px'
},500,
function(){
var $theClone = $(this);
var ratio = $clone.width()/120;
var final_w = 400*ratio;
$loader.show();
//expand the clone when large image is loaded
$('<img class="fp_preview"/>').load(function()
{
var $newimg = $(this);
var $currImage = $('#fp_gallery').children('img:first');
if($(this).width() > $(this).height())
{
jQuery('#fp_preview').css({height: "100%", width: ""});
}
else if($(this).width() < $(this).height())
{
jQuery('#fp_preview').css({height: "", width: "100%"});
}
/*if($newimg.width() > $newimage.height())
{
jQuery('#fp_preview').css({height: "100%", width: ""});
}
else
{
jQuery('#fp_preview').css({height: "", width: "100%"});
}*/
$newimg.insertBefore($currImage);
$loader.hide();
//expand clone
$theClone.animate
(
{
'opacity' : 0,
'top' : windowH/2 + 'px',
'left' : windowW/2 + 'px',
'margin-top' : '-200px',
'margin-left' : -final_w/2 + 'px',
'width' : final_w + 'px',
'height' : '400px'
},1000,function()
{$(this).remove();
}
);
//now we have two large images on the page
//fadeOut the old one so that the new one gets shown
$currImage.fadeOut(2000,function(
){
$(this).remove();
});
//show the navigation arrows
showNav();
}).attr('src',$elem.attr('alt'));
});
//hide the thumbs container
hideThumbs();
e.preventDefault();
});
//clicking on the "show thumbs"
//displays the thumbs container and hides
//the navigation arrows
$btn_thumbs.bind('click',function(){
showThumbs(500);
hideNav();
});
function hideThumbs(){
$('#outer_container').stop().animate({'bottom':'-160px'},500);
showThumbsBtn();
}
function showThumbs(speed){
$('#outer_container').stop().animate({'bottom':'0px'},speed);
hideThumbsBtn();
}
function hideThumbsBtn(){
$btn_thumbs.stop().animate({'bottom':'-50px'},500);
}
function showThumbsBtn(){
$btn_thumbs.stop().animate({'bottom':'0px'},500);
}
function hideNav(){
$btn_next.stop().animate({'right':'-50px'},500);
$btn_prev.stop().animate({'left':'-50px'},500);
}
function showNav(){
$btn_next.stop().animate({'right':'0px'},500);
$btn_prev.stop().animate({'left':'0px'},500);
}
//events for navigating through the set of images
$btn_next.bind('click',showNext);
$btn_prev.bind('click',showPrev);
//the aim is to load the new image,
//place it before the old one and fadeOut the old one
//we use the current variable to keep track which
//image comes next / before
function showNext(){
++current;
var $e_next = $thumbScroller.find('.content:nth-child('+current+')');
if($e_next.length == 0){
current = 1;
$e_next = $thumbScroller.find('.content:nth-child('+current+')');
}
$loader.show();
$('<img class="fp_preview"/>').load(function(){
var $newimg = $(this);
var $currImage = $('#fp_gallery').children('img:first');
$newimg.insertBefore($currImage);
$loader.hide();
$currImage.fadeOut(2000,function(){$(this).remove();});
}).attr('src',$e_next.find('img').attr('alt'));
}
function showPrev(){
--current;
var $e_next = $thumbScroller.find('.content:nth-child('+current+')');
if($e_next.length == 0){
current = nmb_thumbs;
$e_next = $thumbScroller.find('.content:nth-child('+current+')');
}
$loader.show();
$('<img class="fp_preview"/>').load(function(){
var $newimg = $(this);
var $currImage = $('#fp_gallery').children('img:first');
$newimg.insertBefore($currImage);
$loader.hide();
$currImage.fadeOut(2000,function(){$(this).remove();});
}).attr('src',$e_next.find('img').attr('alt'));
}
function makeScrollable(){
$(document).bind('mousemove',function(e){
var hiddenY = $(document).height() - $(window).height();
var hiddenX = $(document).width() - $(window).width();
var top = (e.pageY/$(window).height())*hiddenY;
var left = (e.pageX/$(window).width())*hiddenX;
$(document).scrollTop(top);
$(document).scrollLeft(left);
});
}
});
</script>
</body>
答案 0 :(得分：1)
我想我找到了一个有效的解决方案......至少它到目前为止是有效的。当图像的隐藏部分大于可用窗口区域时，问题就出现了。
这似乎有效。
function makeScrollable(){
$(document).bind('mousemove',function(e){
var hiddenY = $(document).height() - $(window).height();
var hiddenX = $(document).width() - $(window).width();
var top = (e.pageY/$(window).height())*hiddenY/1.3;
var left = (e.pageX/$(window).width())*hiddenX/1.3;
if(hiddenX>=$(window).width()){
var left = (e.pageX - $(document).scrollLeft() / 2);
}
if(hiddenY>=$(window).height()){
var top = (e.pageY - $(document).scrollTop() / 2);
}
$(document).scrollTop(top);
$(document).scrollLeft(left);
});
}
如果有人看到这样的东西会让它更好用，我会非常感谢你的意见。