Panzoom是一个渐进的插件来创建元素的平移和缩放功能。 panzoom需要jquery1.9.0+或jQuery2.0+。IE<=8不支持。Panzoom支持包括iOS和Android的触摸手势，甚至支持捏缩放手势。它非常适合用于移动和桌面浏览器。Panzoom支持直接在浏览器平移和缩放SVG元素。
加载Panzoom
<script src="//ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
<script src="/js/plugins/jquery.panzoom.js"></script>
或AMD方式
define([ "jquery", "plugins/jquery.panzoom" ], function( $ ) {
$(document).ready(function() {
$(".panzoom-elements").panzoom();
});
});
Panzoom使用
$(".panzoom-elements").panzoom();
// Pass options
$("a.panzoom-elements").panzoom({
minScale: 0,
$zoomRange: $("input[type='range']")
});
Panzoom选项
Panzoom.defaults = {
// Should always be non-empty
// Used to bind jQuery events without collisions
// A guid is not added here as different instantiations/versions of Panzoom
// on the same element is not supported.
eventNamespace: ".panzoom",
// Whether or not to transition the scale
transition: true,
// Default cursor style for the element
cursor: "move",
// There may be some use cases for zooming without panning or vice versa
// NOTE: disablePan also disables focal point zooming
disablePan: false,
disableZoom: false,
// Pan only on the X or Y axes
disableXAxis: false,
disableYAxis: false,
// Set whether you'd like to pan on left (1), middle (2), or right click (3)
which: 1,
// The increment at which to zoom
// Should be a number greater than 0
increment: 0.3,
// When no scale is passed, this option tells
// the `zoom` method to increment
// the scale *linearly* based on the increment option.
// This often ends up looking like very little happened at larger zoom levels.
// The default is to multiply/divide the scale based on the increment.
linearZoom: false,
// Pan only when the scale is greater than minScale
panOnlyWhenZoomed: false,
// min and max zoom scales
minScale: 0.4,
maxScale: 5,
// The default step for the range input
// Precendence: default < html attribute < option setting
rangeStep: 0.05,
// Animation duration (ms)
duration: 200,
// css easing used for scale transition
easing: "ease-in-out",
// Indicate that the element should be contained within its parent when panning
// Note: this does not affect zooming outside of the parent
// Set this value to 'invert' to only allow panning outside of the parent element (the opposite of the normal use of contain)
// 'invert' is useful for a large Panzoom element where you don't want to show anything behind it
contain: false,
// Transform value to which to always reset (string)
// Defaults to the original transform on the element when Panzoom is initialized
startTransform: undefined,
// This optional jQuery collection can be set to specify all of the elements
// on which the transform should always be set.
// It should have at least one element.
// This is mainly used for delegating the pan and zoom transform settings
// to another element or multiple elements.
// The default is the Panzoom element wrapped in jQuery
// See the [demo](http://timmywil.github.io/jquery.panzoom/demo/#set) for an example.
// Note: only one Panzoom element will still handle events for a Panzoom instance.
// Use multiple Panzoom instances for that use case.
$set: $elem,
// Zoom buttons/links collection (you can also bind these yourself - e.g. `$button.on("click", function( e ) { e.preventDefault(); $elem.panzoom("zoom"); });` )
$zoomIn: $(),
$zoomOut: $(),
// Range input on which to bind zooming functionality
$zoomRange: $(),
// Reset buttons/links collection on which to bind the reset method
$reset: $(),
// For convenience, these options will be bound to Panzoom events
// These can all be bound normally on the Panzoom element
// e.g. `$elem.on("panzoomend", function( e, panzoom ) { console.log( panzoom.getMatrix() ); });`
onStart: undefined,
onChange: undefined,
onZoom: undefined,
onPan: undefined,
onEnd: undefined,
onReset: undefined
};
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