Html5: Drawing with text】的更多相关文章

<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta charset="utf-8"> <title>Drawing with text</title> <meta name="keywor…
See also e575 The Quintessential Drawing Program. public void paint(Graphics g) { // Set the desired font if different from default font String family = "Serif"; int style = Font.PLAIN; int size = 12; Font font = new Font(family, style, size); g…
var c = canvas.getContext("2d");//get canvas 2d context canvas including a proposed 3D context; c.fillStyle("#ffffff");//rawing canvas background color c.fillRectangle(sx,sy,ex,ey);//drawing a rectanle ,the (sx,sy) is start point,(ex,e…
体验效果:http://keleyi.com/keleyi/phtml/html5/31.htm 推荐:http://hovertree.com/texiao/css3/18/ HTML代码如下: <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"><head><meta charset="UTF-8" > <title>程序员用HTML5制…
基本的几何图形,标注功能. commondLineParser的使用参见:http://blog.csdn.net/u010305560/article/details/8941365 #include "opencv2/core.hpp" #include "opencv2/imgproc.hpp" #include "opencv2/highgui.hpp" #include <stdio.h> #include <iost…
第一步,我们加上对html5的支持. <!--[if IE]> <script src="/public/html5.js" type="text/javascript"></script> <![endif]--> 现在再看,会出现一个黑漆漆的框框,说明IE8已经认识canvas标签了.但红圈圈还是没出来,下面状态栏仍然提示我们JS里压根没取到canvas.这说明IE还只是认识了canvas是个合法标签而已,至于怎么…
微软出的IE9支持HTML5,但因为不支持XP系统,暂时我还用不了. 即使能用,现阶段如果开发HTML5页面,并考虑到兼容性问题的话,恐怕也得让自己的界面支持IE6-8吧. 首先,需要让IE支持HTML5标签.这个简单,随便在网上搜一下就能找到.下载一个html5.js,并拷贝到自己的目录里就可以了. 现在写一段简单代码,其功能是在页面上放置一个canvas,并画一个红色圆圈. 1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transition…
可以夸张点说,如果你不会拖拽,你不是一个合格的前端开发. 回想下,以前我们是怎么实现拖拽的,主要有以下几步: 1.目标元素绑定mousedown事件,记录下此时鼠标位置和拖拽元素的位置差,分别是 diffX ,diffY 2.在mousedown中绑定 document的mousemove 以及mouseup 3.在mousemove中计算拖拽元素的位置: x = event.clientX - diffX ,y = event.clientY - diffY 4.mouseup时中销毁绑定的…
Use 'pattern' tag in html5: <input type="text" pattern="[0-9]{6}" maxlength="6" required>…
Subline Text中,点击Preferences,选择Settings - Default 全部属性解析 // While you can edit this file, it's best to put your changes in // "User/Preferences.sublime-settings", which overrides the settings in here. // // Settings may also be placed in file typ…