[英]jQuery: Creating a circular slider
You may have seen JavaScript sliders before: 你可能以前看过JavaScript滑块:
http://dev.jquery.com/view/tags/ui/1.5b2/demos/ui.slider.html http://dev.jquery.com/view/tags/ui/1.5b2/demos/ui.slider.html
What I'm envisioning is a circular slider. 我想象的是一个圆形滑块。 It would consist of a draggable button at one point on the circle -- and that button can be dragged anywhere along the ring.
它将包含圆圈上一个点上的可拖动按钮 - 该按钮可以沿着环的任何位置拖动。 The value depends on what position the button is at (think of a clock).
该值取决于按钮的位置(想想时钟)。
define a center point c current mouse point at m 在m处定义中心点c当前鼠标点
in your mouse drag event handler, you'd have 在你的鼠标拖动事件处理程序中,你有
var dx = m.x-c.x;
var dy = m.y-c.y;
var scale = radius/Math.sqrt(dx*dx+dy*dy);
slider.x = dx*scale + c.x;
slider.y = dy*scale + c.y;
radius would be some preset value of the slider, radius是滑块的某个预设值,
How about this: http://www.thewebmasterservice.com/dev-blog/curved-rounded-or-circular-sliders-javascript-jquery-ui 怎么样: http : //www.thewebmasterservice.com/dev-blog/curved-rounded-or-circular-sliders-javascript-jquery-ui
Some explanations and a demo. 一些解释和演示。
I have written a jQuery plugin which supports full/half circle sliders. 我写了一个jQuery插件 ,支持完整/半圆滑块。
Check the jQuery roundSlider plugin from here http://roundsliderui.com/ . 从这里http://roundsliderui.com/查看jQuery roundSlider插件。 This is what you want exactly.
这正是你想要的。
This roundslider having the similar options like the jQuery ui slider. 这个roundslider有类似jQuery ui滑块的选项。 It support default, min-range and range slider type.
它支持默认,最小范围和范围滑块类型。 Not only the round slider it also supports various circle shapes such as quarter , half and pie circle shapes.
不仅圆滑块它也支持各种圆形的形状 ,如季度 , 半年和饼形圈的形状。
For more details check the demos and documentation page. 有关更多详细信息,请查看演示和文档页面。
Please check the demo from jsFiddle
. 请查看
jsFiddle
的演示。
Related answers: https://stackoverflow.com/a/31367164/1845801 and https://stackoverflow.com/a/31369265/1845801 相关回答: https : //stackoverflow.com/a/31367164/1845801和https://stackoverflow.com/a/31369265/1845801
Screenshots: 截图:
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