首先,我已经实现了捏缩放以及从hammer.js 拖动到我的图像上,并且效果很好。问题是当我放大并拖动整个页面似乎跟随的图像时,我已经将 user-scalable 设置为 no,但问题仍然存在,有什么解决方案吗?
<html>
<head>
<meta charset="utf-8">
<title>About</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0,user-scalable=no">
<link rel="stylesheet" href="style.css">
<script src="craftmap.js" type="text/javascript"></script>
<script src="js/jquery.js" type="text/javascript"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
<script src="hammer.min.js" type="text/javascript"></script>
<script src="hammer.js" type="text/javascript"></script>
<script src="hammer.fakemultitouch.js" type="text/javascript"></script>
<script src="hammer.showtouches.js" type="text/javascript"></script>
<div class="content">
<div id="pinchzoom">
<img src="images/map.jpg" width="628" height="300" id="rect" alt="Zoo"><div>
它的脚本
var hammertime = Hammer(document.getElementById('pinchzoom'), {
transform_always_block: true,
transform_min_scale: 1,
drag_block_horizontal: false,
drag_block_vertical: false,
drag_min_distance: 0
});
var rect = document.getElementById('rect');
var posX=0, posY=0,
scale=1, last_scale,
last_posX=0, last_posY=0,
max_pos_x=0, max_pos_y=0;
hammertime.on('touch drag transform dragend', function(ev) {
switch(ev.type) {
case 'touch':
last_scale = scale;
break;
case 'drag':
if(scale != 1){
posX = saved_posX + ev.gesture.deltaX;
posY = saved_posY + ev.gesture.deltaY;
if(posX > max_pos_x){
posX = max_pos_x;
}
if(posX < -max_pos_x){
posX = -max_pos_x;
}
if(posY > max_pos_y){
posY = max_pos_y;
}
if(posY < -max_pos_y){
posY = -max_pos_y;
}
}else{
posX = 0;
posY = 0;
saved_posX = 0;
saved_posY = 0;
}
break;
case 'transform':
scale = Math.max(1, Math.min(last_scale * ev.gesture.scale, 10));
max_pos_x = Math.ceil((scale - 1) * rect.clientWidth / 2);
max_pos_y = Math.ceil((scale - 1) * rect.clientHeight / 2);
if(posX > max_pos_x){
posX = max_pos_x;
}
if(posX < -max_pos_x){
posX = -max_pos_x;
}
if(posY > max_pos_y){
posY = max_pos_y;
}
if(posY < -max_pos_y){
posY = -max_pos_y;
}
break;
case 'dragend':
last_posX = posX < max_pos_x ? posX: max_pos_x;
last_posY = posY < max_pos_y ? posY: max_pos_y;
break;
}
// transform!
var transform =
"translate3d(0, 0, 0) " +
"scale3d(1, 1, 0) ";
if(scale != 1){
transform =
"translate3d("+posX+"px,"+posY+"px, 0) " +
"scale3d("+scale+","+scale+", 0) ";
}
rect.style.transform = transform;
rect.style.oTransform = transform;
rect.style.msTransform = transform;
rect.style.mozTransform = transform;
rect.style.webkitTransform = transform;
});