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Js simulates the specific implementation of the windows desktop icon Arrangement Algorithm (as shown in the figure below)

Source: Internet
Author: User
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Note: Jquery needs to be introduced.
If the upload function is full, import jquery-uiand jquery-ui.css.
:

Js Code: Copy codeThe Code is as follows: $ (function (){

// Menu list
Var menu_list = $ (". menu-list ");

// Work zone
Var working = $ (". working ");

Working. click (function (){
Menu_list.hide ();
$ (". Content-menu"). hide ("slow ");
});

// Click the menu icon
$ (". Menu"). bind ("click", function (){
Menu_list.show ();

});
Arrange ();

$ (Window). resize (function (){
Arrange ();
});

// Shield the right-click menu
$ (Document). contextmenu (function (){
Return false;
});

// Right-click the workspace to display the menu
$ (". Working"). contextmenu (function (event ){

Var x = event. clientX;
Var y = event. clientY;
Var menu = $ (". content-menu ");

// Determine coordinates
Var width = document. body. clientWidth;
Var height = document. body. clientHeight;

X = (x + menu. width ()> = width? Width-menu.width (): x;
Y = (y + menu. height ()> = height-40? Height-menu.height (): y;

// Alert ("visible height:" + height + ", mouse height:" + y );
Menu.css ("top", y );
Menu.css ("left", x );
Menu. show ();

});

// Content-menu
$ (". Content-menu ul li"). click (function (){
Var text = $ (this). text ();

Switch (text ){
Case "refresh ":
Document. location. reload ();
Break;
Case "log out ":
If (confirm ("do you want to log out? ")){

}
Break;
Default:
Break;
}

$ (". Content-menu"). hide ();
});
});
// Arrange the icon Section
Function arrange (){
Var ul = $ (". icons ");
Var working = $ (". working ");
// Coordinates
Var position = {x: 0, y: 0, bottom: 110, width: 50, height: 50, parent: {height: 0, width: 0}, padding: {top: 10, left: 10, right: 0, bottom: 10 }};

Position. parent. height = working. height ()-40;
Position. parent. width = working. width ();

Ul. find ("li"). each (function (index ){

((This).css ("top", position. y + "px ");
((This).css ("left", position. x + "px ");

Position. height = $ (this). height ();
Position. width = $ (this). width ();

Position. y = position. y + position. height + position. padding. bottom + position. padding. bottom;

If (position. y> = position. parent. The height-position.bottom ){
Position. y = 0;
Position. x = position. x + position. width + position. padding. left;
}
});
}

Html code:Copy codeThe Code is as follows: <! Doctype html public "-// IETF // DTD LEVEL1 // EN">
<Html>
<Head>
<Title> index.html </title>

<Meta http-equiv = "keywords" content = "keyword1, keyword2, keyword3">
<Meta http-equiv = "description" content = "this is my page">
<Meta http-equiv = "content-type" content = "text/html; charset = GBK">
<Link rel = "stylesheet" type = "text/css" href = "css/window.css">
<Link rel = "stylesheet" type = "text/css" href = "css/jquery-ui.css">
<Script language = "JavaScript" src = "js/jquery-1.10.0.js"> </script>
<Script language = "JavaScript" src = "js/jquery-ui.js"> </script>
<Script language = "JavaScript" src = "js/window. js"> </script>
</Head>
<Body>

<Div class = "working">

<Ul class = "icons">

<Script>
For (var I = 1; I <= 4; I ++ ){
Var html = "";
Html + = '<li> ';
Html + = ' ';
Html + = '<div class = "text"> icon' + I + '</div> ';
Html + = '</li> ';
Document. write (html );
}
</Script>

</Ul>

</Div>

<Div class = "taskbar">
<Div class = "menu-list">
<Ul>
<Li> </li>
</Ul>
</Div>

<Div class = "menu">

<Div class = "menu-icon">
<Ul> <li> </ul>
</Div>

<A href = "javascript:;"> </a>
</Div>

</Div>

<Div class = "window" title = "form"> form </div>

<Div class = "content-menu">
<Ul>
<Li> <a href = "javascript:;"> refresh </a> </li>
<Li> <a href = "javascript:;"> Settings </a> </li>
<Hr/>
<Li> <a href = "javascript:;"> help </a> </li>
<Hr/>
<Li> <a href = "javascript:;"> about </a> </li>
<Hr/>
<Li> <a href = "javascript:;"> system Settings </a> </li>
<Li> <a href = "javascript:;"> log out </a> </li>
</Ul>
</Div>

<Script>

$ (". Icons li"). mousemove (function (){
$ (This). addClass ("icons-move ");
});

$ (". Icons li"). mouseout (function (){
$ (This). removeClass ("icons-move ");
});

$ (". Icons li"). mousedown (function (){
$ (". Icons li"). removeClass ("icons-focus ");
$ (This). addClass ("icons-focus ");
// Change the current index
$ (". Icons li" ).css ("z-index", 0 );
((This).css ("z-index", 1 );
});

$ (". Icons li"). dblclick (function (){
Alert ("double click ");
});

// Key event
$ (Document). keyup (function (event ){
Var UP = 38;
Var DOWM = 40;
Var ENTER = 13;
Var elem = $ (". icons-focus ");

If(elem.html () = "undefined") return;

If (event. keyCode = UP ){
$ (". Icons li"). removeClass ("icons-focus ");
Elem. prev (). addClass ("icons-focus ");
}

If (event. keyCode = DOWM ){
$ (". Icons li"). removeClass ("icons-focus ");
Elem. next (). addClass ("icons-focus ");
}

// Press enter to open the selected icon
If (event. keyCode = ENTER ){
Var open = $ (". icons-focus ");
Alert ("OK enevt is enter ");
}

});

// Drag the icon
$ (". Icons li"). draggable ();

// Register the resize event
$ (". Window"). draggable ({containment: 'parent '});
$ (". Window"). resizable ({containment: 'parent '});

</Script>
</Body>
</Html>

CSS code:Copy codeThe Code is as follows: @ CHARSET "UTF-8 ";
Body, html {
Overflow: hidden;
Height: 100%;
Width: 100%;
Margin: 0px;
Padding: 0px;
}
. Working {
Height: 100%;
Width: 100%;
Background-image: url ("../images/untitled.png ");
Background-repeat: no-repeat;
Background-color: rgb (235,236,238 );
Padding: 20px;
}
. Working ul {
Height: 100%;
Position: relative;
}
. Working ul li {
Position: absolute;
Display: block;
Width: 90px;
Height: 90px;
Text-align: center;
Margin: 0px 10px 10px 10px;
Float: left;
Border: inherit 1px inherit;
Overflow: hidden;
Cursor: pointer;
}
. Taskbar {
Position: absolute;
Height: 35px;
Line-height: 35px;
Width: 100%;
Bottom: 0px;
Background-color: # CCC;
Z-index: 999;
Filter: alpha (opacity = 80 );
Opacity: 0.8;
Padding: 0px 10px;
}
. Menu {
Display: block;
Width: 50px;
Height: 30px;
Float: left;
}
. Menu-list {
Position: absolute;
Left: 0px;
Bottom: 35px;
Width: 350px;
Height: 500px;
Border: # CCC 1px solid;
Background-color: white;
Filter: alpha (opacity = 90 );
Opacity: 0.9;
Border-radius: 5px;
Display: none;
}
Ul {
Margin: 0px;
Padding: 0px;
}
. Menu-icon {
Cursor: pointer;
}
. Menu-icon ul li {
Display: block;
Width: 15px;
Height: 15px;
Float: left;
Margin: 1px;
Background-color: white;
Border-radius: 3px;
}
. Menu-icon: hover li {
Background-color: red;
}
. Icons li img {
Max-height: 70px;
Max-width: 90px;
}
. Text {
Position: static;
Height: 20px;
Line-height: 20px;
Width: 100%;
Margin: 0px;
Font-size: 12px;
Font-family:;
Color: white;
}
. Icons-move {
Border: rgb (161,194,219) 1px solid;
Background-color: rgb (194,208,226 );
Filter: alpha (opacity = 60 );
Opacity: 0.6;
Border-radius: 3px;
}
. Icons-focus {
Border: rgb (161,194,219) 1px solid;
Background-color: rgb (194,208,226 );
Filter: alpha (opacity = 100 );
Opacity: 1;
Border-radius: 3px;
}
. Window {
Height: 200px;
Width: 200px;
Border: # CCC 1px solid;
Background-color: white;
Border-radius: 5px;
Position: absolute;
Top: 0px;
Z-index: 10;
}
/*
* Right-click the menu
*/
. Content-menu {
Position: absolute;
Width: 150px;
Height: auto;
Background-color: rgb (255,255,255 );
Border: # CCC 1px solid;
Display: none;
Border-radius: 5px;
Z-index: 999;
}
. Content-menu ul {
Margin: 0px;
Padding: 0px;
}
. Content-menu ul li {
List-style: none;
Line-height: 30px;
Height: 30px;
Margin: 3px 0px;
Padding: 0px;
Font-size: 13px;
}
. Content-menu ul li {
Text-decoration: none;
Display: block;
Font-family:;
Padding: 0px 5px;
Width: 140px;
Height: 100%;
Color: #333;
Outline: none;

}
. Content-menu ul li a: hover {
Background-color: # DDD;
}
. Content-menu ul hr {
Margin: 1px 0px;
Height: 0px;
Border: 0px;
Border-bottom: # CCC 1px solid;
}

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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