Previously recorded scanned QR code using Apple's original Avfoundationo class library: http://www.cnblogs.com/foxting/p/4733226.html, which records how to set the scan area.Avcapturemetadataoutput has an attribute rectofinterest, set your area.First set the video area to the screen: Self.layer? frame = Self.view.boundsLook at the Rectofinterest note will know its area
This article mainly introduces the code of the navigation area for jquery to implement top-to-right scaling. It involves the jquery mouse click event and the related techniques of dynamic operation of page elements, and has some reference value, for more information, see the examples in this article to describe the code of the navigation
It has finally reached the learning stage of "design pattern", and I have been looking forward to it for a long time.
However, you must install Visual Studio before learning design patterns. For the first time, I chose to install vs2012. I heard that it is easy to use the software. If you want to choose it, you can choose it. Vs2012 was installed as quickly as possible. The installation process was smooth and there were no errors. Thank you! In the next few days, I was eager to try the magic of
Copy codeThe Code is as follows:This means to control the image size in the specified area, otherwise some advertisement images will be distorted.The picture control code used by the script house:Copy codeThe Code is as follows:Function controlImg (ele, w, h ){Var c = ele. getElementsByTagName ("img ");For (var I = 0;
:@[AVMETADATAOBJECTTYPEQRCODE]];5. Set the preview layer (let the user see the scan results)Avcapturevideopreviewlayer *preview = [Avcapturevideopreviewlayer layerwithsession:session];_previewlayer = preview;5.1 Setting the properties of the previewpreview.videogravity = Avlayervideogravityresizeaspectfill;5.2 Setting the size of the preview layer[Preview SetFrame:self.view.bounds];5.3 Adding layers to a view's layer[Self.view.layer Insertsublayer:preview atindex:0];6. Start the session[Session
Jquery implements code for the navigation area scaled to the right on the top, jquery to the right
This example describes the code of jquery's navigation area for top-to-right scaling. Share it with you for your reference. The details are as follows:
This is a navigation-like menu, but it is highly scalable. It can be
In the area of software development, code review appears to be a controversial, fairly peaceful topic.
The prevailing view is that code censorship is a good thing. Some companies or organizations even force the requirement to audit the code as a necessary process.
Review is a good measure to catch bugs and problems.
!!!
Looking back again, even if the upper right corner is the origin that should not affect AH, but why not, is not the origin of the X and Y interchange it? Forget it or whatever, give it a try.
[_outputsetrectofinterest:cgrectmake (60+64)/screenhigh, ((ScreenWidth-220)/2)/screenwidth,220/screenwidth,220/ Screenhigh)];
I scanned it again and found it! The original point is correct, I just want to say tmd!
But what about the width and height? No, it's not interchangeable! Give it a t
Website homepage head area code specification head area refers to the homepage HTML codeAnd.
Tags that must be added
1. Company copyright note
2. webpage display character set
Simplified Chinese:
Traditional Chinese:
English:
3. webpage producer Information
4. Website Introduction
5. Search for keywords
6. css specifications for webpages
Provides various official and user-released code examples. For code reference, you are welcome to exchange and learn how to implement the flash PIE analysis graph code instance in the area of simulation traffic statistics.
Today we will share with you a pie distribution chart of the flash animation effect. Users who ha
divided by the corresponding device width and height of the size of the line? And then it's changed into[_output Setrectofinterest:cgrectmake (((ScreenWidth-220)/2)/ScreenWidth, (60+)/Screenhigh, 220/SCREENW Idth, 220/screenhigh)];Supposedly this should be perfect, but only to know that I am still happy too early, a scan only to find that it is not so much, a lot worse.So I was 1.1 points, but finally did not adjust the success, the last cruel have set a very definite value.[_output setrectofin
FLEX draws an administrative area map from the open source framework Degrafa The following is a click on the map on the City Section will turn blue hint and have the corresponding selection effectThis map is part of the city map of Hunan Province by using the SVG tool to pull out thePlease download the relevant code at this link:http://download.csdn.net/detail/huqingyun69/8497213Degrafa Framework Source cod
var target = document.getElementById (' target '), if (Target.addeventlistener) {Target.addeventlistener ("mouseout", Mouseouthander,false)}else if (target.attachevent) {target.attachevent ("onmouseout", Mouseouthander);} Else{target.onmouseout = Mouseouthander;} function Mouseouthander (e) {e = e | | Window.event;var target = e.target | | e.srcelement; Determines whether the element that is moved out of the mouse is the target element if (target.id!== ' target ') { return; } Determines w
Test example:Copy codeThe Code is as follows:Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd>
Result:
Chrome:
FF
OPERA:
SAFARI:
IE9:
IE8
IE7:
IE6
Note:
Chrome/FF/Safari/operaFor these browsers, The innerWidth/innerHeight attribute of the window contains the visible area size of the entire document. Note that this size contains the size of the scroll bar.We can directly use these two attribut
Verify the php code of the coordinates in a coordinate area,
The previous requirement was to display the company's services on a map, the user's daily access coordinates are calculated to see how many users are within the radius of the service range that can be reached.
The following is the implementation of the PHP code (only verify that the coordinates are in a
This example describes the JavaScript implementation scalable display area effect code. Share to everyone for your reference, specific as follows:
This shows a scalable display area, the use of JS code to achieve, the mouse hold down the area of the lower right corner, drag
when you scan you will find that the QR code has not entered the center of the small box, it has been successfully scanned, which is not good for the experience. But since then there is no time to optimize the project. At last, I took out the time today.I have been working from morning to afternoon, I have tried all the methods I thought of, but none (all tears), and finally will give up the time to find a more suspicious point.@property (nonatomic)
Today, in December September 13, 2014, the code under Vim is automatically indented and replaced with the string of the visible area. We have been using vim, a powerful editor. Only the users who use it know its power, now we can display these two powerful functions. These two functions are handy even if you do not indent the code, or you want to modify the strin
Key to technical implementation: the display feature of CSS is used. The value of the display feature is none and block. None is hidden, and block is displayed.
Previous design: The foldable area is divided into two areas: the title bar and content area. The title bar is always visible, and the content part can be folded or expanded. On the page, you can use two
Steps:Insert the CodeThe
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