


Problems with canvas and drawImage, experts can quickly learn_html/css_WEB-ITnose
代码如下:
drawImage出来的图片尺寸变形,不是原来图片的形状,会看到canvas背景蓝色。
回复讨论(解决方案)
请问你用的是什么浏览器呀???我用的chrome opera ie9貌似都没有你说的问题
.after($("
canvas画布的尺寸没问题,用drawImage画出来的图片与源img节点尺寸不一样
canvas里面的width和height跟css里面的width和height是不一样的,我以前就被坑过。。 统一用canvas.width比较好,画板的坐标神马的跟这个width是一样的,跟css里面的不一样
canvas画布的尺寸没问题,用drawImage画出来的图片与源img节点尺寸不一样
2楼已经和你说的很清楚了
谢了各位,解决了
怎么解决的呀,也碰到了同样的问题,望楼主告知下解决的方法哦!!
怎么解决的呀,也碰到了同样的问题,望楼主告知下解决的方法哦!!
canvas的width和height要设置成属性而不是样式
就是这种
不是 和 canvas {width: 400px; height: 300px;}
原来如此。。。。 坑了我好久。。。。

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

The official account web page update cache, this thing is simple and simple, and it is complicated enough to drink a pot of it. You worked hard to update the official account article, but the user still opened the old version. Who can bear the taste? In this article, let’s take a look at the twists and turns behind this and how to solve this problem gracefully. After reading it, you can easily deal with various caching problems, allowing your users to always experience the freshest content. Let’s talk about the basics first. To put it bluntly, in order to improve access speed, the browser or server stores some static resources (such as pictures, CSS, JS) or page content. Next time you access it, you can directly retrieve it from the cache without having to download it again, and it is naturally fast. But this thing is also a double-edged sword. The new version is online,

The article discusses using HTML5 form validation attributes like required, pattern, min, max, and length limits to validate user input directly in the browser.

Article discusses best practices for ensuring HTML5 cross-browser compatibility, focusing on feature detection, progressive enhancement, and testing methods.

This article demonstrates efficient PNG border addition to webpages using CSS. It argues that CSS offers superior performance compared to JavaScript or libraries, detailing how to adjust border width, style, and color for subtle or prominent effect

The article discusses the HTML <datalist> element, which enhances forms by providing autocomplete suggestions, improving user experience and reducing errors.Character count: 159

The article discusses the HTML <progress> element, its purpose, styling, and differences from the <meter> element. The main focus is on using <progress> for task completion and <meter> for stati

This article explains the HTML5 <time> element for semantic date/time representation. It emphasizes the importance of the datetime attribute for machine readability (ISO 8601 format) alongside human-readable text, boosting accessibilit

The article discusses the HTML <meter> element, used for displaying scalar or fractional values within a range, and its common applications in web development. It differentiates <meter> from <progress> and ex
