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Internet rakenduste architektuur ja realiseerimine. 5. L.Joonas 2012 PowerPoint Presentation
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Internet rakenduste architektuur ja realiseerimine. 5. L.Joonas 2012

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  1. Internet rakenduste architektuur ja realiseerimine. 5. L.Joonas 2012

  2. CSS.3

  3. Управление позиционированием • Тип позиционирования • Статическое позиционирование • Относительное позиционирование • Абсолютное позиционирование • Фиксированное позиционирование

  4. Тип позиционирования • <head> • <style media="screen" type="text/css"><!-- • .stat {position: static; font: bold 28pt courier; color: #cccccc;} • .abs {position: absolute; top: 25px; left: 375px; width: 100px; font: bold 35pt helvetica; color: #666666;} • .rel {position: relative; top: 70px; left: 25px; font: bold 12pt times; color: #000000;} • --></style> • </head> • <body> • <div class="stat">'Oh my ears and whiskers, how late it's getting!'</div> • <div class="abs">'Oh my ears and whiskers, how late it's getting!'</div> • <div class="rel"> 'Oh my ears and <span class="rel">whis<span сlass="rel">kers</span></span>, how late it's getting!'</div> • </body>

  5. Определение положения по отношению к левому верхнему углу • <head> • <style media="screen" type="text/css"><!-- • #object1 { • position: absolute; • top: 125px; • left: 12em; • border: silver solid 2px; } • .changeplace { • position: relative; • top: 1cm; • left: 1cm; • background-color: #ffcccc;} • --></style> • </head> • <body> • <div id="object1"> • <img src="alice27.gif" width="250" height="225" border="0" align="left"> • <p>'I want a<span class="changeplace"> clean cup</span>,' interrupted the Hatter: 'let's all move one place on.'</p> • <p>He moved.</p> • </div> • </body>

  6. Определение положения по отношению к правому нижнему углу <head> <style media="screen" type="text/css"><!-- #object1 { position: absolute; bottom: 125px; right: 12em; border: silver solid 2px; } .changeplace { position: relative; bottom: 1cm; right: 1cm; background-color: #ffcccc;} --></style> </head> <body> <div id="object1"> <img src="alice27.gif" width="250" height="225" border="0" align="left"> <p>'I want a<span class="changeplace"> clean cup</span>,' interrupted the Hatter: 'let's all move one place on.'</p> <p>He moved.</p> </div> </body>

  7. Элементы в порядке стека (3d-позиционирование) <head> <style media="screen" type="text/css"><!-- #element1 { position: absolute; z-index: 3; top: 175px; left: 255px } #element2 { position: absolute; z-index: 2; top: 100px; left: 170px } #element3 { position: absolute; z-index: 1; top: 65px; left: 85px } #element4 { position: absolute; z-index: 0; top: 5px; left: 5px } --></style> </head> <body> <span id="element1"><img src="alice22.gif" width="100" height="147"><br clear="all"> Element 1 </SPAN> <span id="element2"><img src="alice32.gif" width="140" height="201"><br clear="all"> Element 2 </SPAN> <span id="element3"><img src="alice15.gif" width="150" height="198"><br clear="all"> Element 3 </SPAN> <span id="element4"><img src="alice29.gif" width="200" height="236"><br clear="all"> Element 4 </span> </body>

  8. Абсолютные элементы, встроенные в относительные <head> <style media="screen" type="text/css"><!-- .relElement { position:relative; top: 75px;} .absElement { position: absolute; z-index: 0; top: 0px; left: 0px; font-size: 36pt; color: #cccccc; } p { position:relative; z-index: 100} --></style> </head> <body> <div class="relElement"> <div class="absElement">Alice In Wonderland <br><img src="alice03.gif" width="300" height="284" border="0"></div> <p>Alice opened the door you see, so many out-of-the-way things had happened lately, that Alice had begun to think that very few things indeed were really impossible.</p> <p>However, this bottle was <i>not</i> marked 'poison,' so Alice ventured to taste it, and finding it very nice, (it had, in fact, a sort of mixed flavour of cherry-tart, custard,.</p> </div> </body>

  9. Относительные элементы, встроенные в абсолютные <head> <style media="screen" type="text/css"><!-- .absElement{ position: absolute; left: 100px; border-style: none none none solid; border-width: 0px 0px 0px 1px; border-color: #000000; padding: 10px;} .relElement { position: relative; float: right; font-weight: bold; padding: 1em; width: 275px; } --></style> </head> <body> <div class="absElement"> <p class="relElement"><img src="alice37.gif" width="100" height="136" align="right">One of the jurors had a pencil that squeaked. This of course, Alice could not stand, and she went round the court and got behind him, and very soon found an opportunity of taking it away.</p> <p>The King and Queen.</p> </div> </body>

  10. Определение видимости элемента <head> <style media="screen" type="text/css"><!-- .hide { position: relative; visibility: hidden;} --></style> </head> <body> <span class="hide"> <img SRC="alice24.gif" WIDTH="350" HEIGHT="238" ALIGN="right"> </span>'I thought it would,' said the Cat, and vanished again. <p>Alice waited a little.</p> <p>'Did you say pig, or fig?' said the Cat.</p> </body>

  11. Определение видимой части элемента <style type="text/css"> .clipInHalf { position: absolute; clip: rect(15 350 195 50); top: 0px; left: 0px; } </style> <body> <div class="clipInHalf"> <img src="alice31.gif" width="379" height="480" align="left"> </div> </body>

  12. Определение overflow <head> <style media="screen" type="text/css"><!-- .illustration{ width: 200px; height: 200px; overflow: auto; float: right; margin: 5px;} --></style> </head> <body> <div class="illustration"> <img src="alice35.gif" width="401" height="480"> </div> <h3>CHAPTER IX<br> The Mock Turtle's Story</h3> <p>'You can't think how glad I am to see you again, you dear old thing!' said the Duchess, as she tucked her arm affectionately into Alice's, and they walked off together.</p> </body>

  13. Объектная модель документа • DOM – Document object model

  14. Создание объекта • <head> • <style media="screen" type="text/css"><!-- • #object1 { • position: absolute; • top: 100px; • left: 150px; • visibility: visible; • width:210px; } • --></style> • </head> • <body> • <div id="object1"> • <h3>This is Object 1</h3> • <img src="alice04.gif" width="200" height="298" border="0"> • </div> • </body>

  15. Обработчики событий <head> <script> var omm=0; var of=0; </script> </head> <body onLoad="alert('onLoad: The document has loaded.'); var i=0;" onUnLoad="alert('onUnLoad: The document is now gone.')" onMove="alert('onMove: The window has been moved.')" onResize="alert('onResize: The window has been resized.')" onMouseMove="if (omm==0) { alert('onMouseMove: You moved your mouse.'); omm= 1}"> <h1>Event Handlers</h1> <form name="FormName" action="#" method="get"> <input onFocus="if (of==0) {alert('onFocus: This form field has been selected.');of = 1;}" type="text" value="Click in Me"><br><br> <input onBlur="alert('onBlur: This form field has been deselected.')" type="text" value="Click in me and then out"> </form> <a href="#" onMouseOver="alert('onMouseOver: Your mouse passed over this link')"> Pass Your Mouse Over Me. </a><br><br> <a href="#" onMouseOut="alert('onMouseOut: Your mouse moved away from this link')"> Pass Your Mouse Over Me and then move away.

  16. Обработчики событий (2) </a><br><br> <a href="#" onClick="alert('onClick: You have clicked this link')"> Click Me! </a><br><br> <a href="#" onMouseDown="alert('onMouseDown: You pressed your mouse button down.')"> Click Me! </a><br><br> <a href="#" onMouseUp="alert('onMouseUp: You have released your mouse button.')"> Click Me! </a> <form name="FormName" action="#" method="get"> <input onKeyPress="alert('onKeyPress: You pressed a key.')" type="text" value="Type in Me!"><br><br> <input onKeyDown="alert('onKeyDown: You pressed a key down.')" type="text" value="Type in Me!"><br><br> <input onKeyUp="alert('onKeyUp: You pressed a key and then released it.')" type="text" value="Type in Me!" tabindex="5"><br><br> </form> </body>

  17. Обнаружение события • <body> • <a href="#" onmouseover= "document.images.button1.src='b_on.gif'"><img src="b_off.gif" name="button1" border="0"></a> • </body>

  18. Netscape Layer DOM <head> <script> function NAVmoveElement (objectID) { document.layers[objectID].left = 120; document.layers[objectID].top = 200; } </script> <style media="screen" type="text/css"><!-- #object1 { position: absolute; top: 10px; left: 10px; visibility: visible } --></style> </head> <body> <div id="object1"> <a href="#" onmouseOver="NAVmoveElement('object1')"> This script will run in Netscape 4 and compatible browsers only.<br> <img src="alice04.gif" width="200" height="298" border="0"> </a> </div> </body>

  19. Internet Explorer ALL DOM <head> <script> function IEmoveElement () { document.all['object1'].style.left = 120; document.all['object1'].style.top = 200; } </script> <style media="screen" type="text/css"><!-- #object1 { position: absolute; top: 50px; left: 10px; visibility: visible } --></style> </head> <body> <div id="object1"> <a href="#" onmouseOver="IEmoveElement()"> This script will run in Internet Explorer 4, 5 and compatible browsers only.<br> <img src="alice04.gif" width="200" height="298" border="0"> </a> </div> </body>

  20. W3C ID DOM <head> <script> function W3CmoveElement () { document.getElementById('object1').style.left = 120; document.getElementById('object1').style.top = 60; } </script> <style media="screen" type="text/css"><!-- #object1 { position: absolute; top: 10px; left: 10px; visibility: visible } --></style> </head> <body> <div id="object1"> <a href="#" onmouseOver="W3CmoveElement()"> This script will run in any browser that uses the W3C's standard<br> for DOM, including Internet Explorer 5 and Netscape.<br> <img src="alice04.gif" width="200" height="298" border="0"> </a> </div> </body>

  21. Определение возможностей браузера • <body> • <script language="JavaScript"> • if (document.images) { • document.writeln('Yes, I can change images.'); • } • else { • document.writeln('Sorry. I can not change images.'); • } • </script> • </body>

  22. Определение типа DOM <head><SCRIPT> var isDHTML = 0; var isLayers = 0; var isAll = 0; var isID = 0; if (document.getElementById) {isID = 1; isDHTML = 1;} else { if (document.layers) {isLayers = 1; isDHTML = 1;} else { if (document.all) {isAll = 1; isDHTML = 1;} }} // --> </script> </head>

  23. Определение типа DOM (2) <body> <script><!-- if (isDHTML) {document.write('This is a DHTML capable browser using ');} if (isID) {document.write('The World Wide Web Consortium\'s "ID" DOM.');} else { if (isLayers) {document.write('Netscape\'s "Layer" DOM.');} else { if (isAll) {document.write('Internet Explorer\'s "all" DOM.');} else {document.write('This is not a DHTML capable browser...so what are you waiting for?');} }} // --> </script> </body>

  24. Построение общей DOM <head> <script><!-- var isDHTML = 0; var isLayers = 0; var isAll = 0; var isID = 0; if (document.getElementById) {isID = 1; isDHTML = 1;} else { if (document.all) {isAll = 1; isDHTML = 1;} else { browserVersion = parseInt(navigator.appVersion); if ((navigator.appName.indexOf('Netscape') != -1) && (browserVersion == 4)) {isLayers = 1; isDHTML = 1;} }}

  25. Построение общей DOM (2) function findDOM(objectID,withStyle) { if (withStyle == 1) { if (isID) { return (document.getElementById(objectID).style) ; } else { if (isAll) { return (document.all[objectID].style); } else { if (isLayers) { return (document.layers[objectID]); } };} } else { if (isID) { return (document.getElementById(objectID)) ; } else { if (isAll) { return (document.all[objectID]); } else { if (isLayers) { return (document.layers[objectID]); } };} } }

  26. Построение общей DOM (3) function whoAmI(objectID) { domStyle = findDOM(objectID,1) dom = findDOM(objectID,0); if (domStyle.pixelTop != null) { alert(domStyle.pixelTop); } else { alert(domStyle.top); } alert(dom.id); } // --> </script>

  27. Построение общей DOM (4) <style media="screen" type="text/css"><!-- #object1 { position: absolute; visibility: show; top: 10px; left: 10px; } --></style> </head> <body onLoad="whoAmI('object1')"> <div id="object1"> This is an Object<br> <img src="alice14.gif" width="407" height="480" border="0"> </div> </body>

  28. Использование общей для браузеров DOM <head> <script src="findDOM.js"></script> <script> function moveObject (objectID) { domStyle = findDOM(objectID,1); domStyle.left = 120; domStyle.top = 200; } </script> <style media="screen" type="text/css"><!-- #object1 { position: absolute; visibility: show; top: 10px; left: 10px } --></style> </head>

  29. Использование общей для браузеров DOM(2) <body onLoad="moveObject('object1')"> <div id="object1"> This script will run in any Netscape 4 and above, Internet Explorer 4 and above, or W3C compatible browsers.<br> <img src="alice04.gif" width="200" height="298" border="0"> </div> </body>