如何为Fabric.js启用响应式设计 [英] How to enable responsive design for Fabric.js

问题描述

是否可以通过浏览器调整Fabric.js画布的大小以在任何设备上启用相同的结果?我说的是响应式设计.

Is there a way to make a Fabric.js canvas resize with the browser to enable the same result on any device? I'm talking about responsive design.

有人有代码示例吗?

推荐答案

基本上，您需要获取设备屏幕的宽度和高度.然后，只需在Javascript中相应地调整画布的大小即可.示例:

Basically you need to get the device screen's width and height. Afterwards just resize the canvas accordingly in your Javascript. Example:

var width = (window.innerWidth > 0) ? window.innerWidth : screen.width;
var height = (window.innerHeight > 0) ? window.innerHeight : screen.height;
var canvas = document.getElementById("canvas");
canvas.width = width;
canvas.height = height;

尽管您的屏幕可能具有不同的分辨率，但是在这种情况下，我通常要做的是计算原始宽度和设备的宽度比，然后使用该值相应地调整宽度和高度.示例:

You might have screens with varying resolution ratios though, what I usually do in this case is calculate your original width's and the device's width ratio and then adjust both width and height accordingly with that value. Example:

var originalWidth = 960;  //Example value
var width = (window.innerWidth > 0) ? window.innerWidth : screen.width;
var widthRatio = originalWidth / width;
canvas.width *= widthRatio;
canvas.height *= widthRatio;

这通常对我在任何设备上都适用，希望对您有所帮助.

This usually works fine for me on any device, hope this helps.

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