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| -rw-r--r-- | doc/src/webkit/guide/chapter_css.qdoc | 1260 | ||||
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| -rw-r--r-- | doc/src/webkit/webkit.qdoc | 2 |
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diff --git a/doc/src/index.qdoc b/doc/src/index.qdoc index 4781127..90caf06 100644 --- a/doc/src/index.qdoc +++ b/doc/src/index.qdoc @@ -59,8 +59,8 @@ \enddiv \list \o \l{Qt Demonstrations}{Application Gallery} - \o \l{Tutorials} - \o \l{Qt Examples}{Examples} + \o \l{Tutorials}{Step-by-Step Tutorials} + \o \l{Qt Examples}{Qt Example Code} \o \l{QML Examples and Demos} \endlist \enddiv @@ -104,7 +104,7 @@ \o \l{external: Setting Up Development Environment for Symbian}{Setting Up Development Environment for Symbian} \o \l{external: Setting Up Development Environment for Maemo}{Setting Up Development Environment for Maemo} \o \l{qt-mobile-demos}{Mobile Applications and Demos} - \o \l{external: Publishing Applications to Ovi Store}{Publishing Applications to Ovi Store} + \o \l{QtWebKit Guide}{QtWebKit Developer Guide} \endlist \list \o \l{Qt Development: The Steps from Challenge to Achievement}{The Steps from Challenge to Achievement} diff --git a/doc/src/webkit/guide/chapter_css.qdoc b/doc/src/webkit/guide/chapter_css.qdoc index e299e57..9dd35bc 100644 --- a/doc/src/webkit/guide/chapter_css.qdoc +++ b/doc/src/webkit/guide/chapter_css.qdoc @@ -45,70 +45,54 @@ \title Level 3 CSS (BETA) \chapter Level 3 CSS -This section serves as an introduction to various Level 3 CSS features +This section of the Qt WebKit Guide serves as an introduction to various Level 3 CSS features supported by QtWebKit: \list -\o The \l{Media Queries} section discusses a simple client-based -technique to present different interfaces and functionality from a -single source of content to different classes of mobile device. +\o The \l{Media Queries} section discusses a simple client-based technique to +present different interfaces and functionality from a single source of content +to different classes of mobile device. -\o The \l{Selectors} section concentrates on recently introduced -syntax elements that make applying formatting and gathering DOM -elements more flexible. +\o The \l{Selectors} section concentrates on recently introduced syntax elements +that make applying formatting and gathering DOM elements more flexible. -\o The \l{Visual Effects} section surveys numerous formatting -properties, +\o The \l{Visual Effects} section surveys numerous formatting properties, including new color models and advanced WebKit effects. -\o Finally, -the \l{Dynamic CSS} section discusses 2D transforms, -transitions, +\o Finally, the \l{Dynamic CSS} section discusses 2D transforms, transitions, and keyframe animations. \endlist -This section features links to numerous sample pages that demonstrate -how various CSS3 features may be applied within a mobile interface. -For best results, -view these samples with a modern Webkit-based browser such as Apple -Safari or Google Chrome. -Resize the window in which the sample appears to roughly match the -dimensions of a touch-screen mobile device. +This section features links to numerous sample pages that demonstrate how +various CSS3 features may be applied within a mobile interface. For best +results, view these samples with a modern Webkit-based browser such as Apple +Safari or Google Chrome. Resize the window in which the sample appears to +roughly match the dimensions of a touch-screen mobile device. \section1 Media Queries -CSS media \bold{queries} extend media \bold{types} with more detailed -capabilities. -Media Queries offer a simple client-side mechanism to customize -interfaces comprehensively via CSS. +CSS \e{media queries} extend \e{media types} with more detailed capabilities. +Media queries offer a simple client-side mechanism to customize interfaces +comprehensively via CSS. -Media queries are especially useful when extending a body of content -for presentation on mobile browsers. -Prior to support for this feature, -there were two basic approaches to provisioning mobile web content, -both server-based: +Media queries are especially useful when extending a body of content for +presentation on mobile browsers. Prior to support for this feature, there were +two basic approaches to provisioning mobile web content, both server-based: \list - -\o \bold{Mobile-specific domains}. -Content providers might provide a separate access points for default -content at \bold{www.website.com}, -with mobile content available at \bold{m.website.com} or -\bold{website.mobi}. -There might also be an additional \bold{touch.website.com} access -point targeted for higher-end touch-screen browsers. - -\o \bold{Dynamic Server-based Adaptation}. -In this case, -there is a single access point, -but the server sends different content, -typically depending on the \bold{User-Agent} header included in all -browsers\' HTTP requests. +\o \e{Mobile-specific domains}. Content providers might provide a separate +access points for default content at \c{www.website.com}, with mobile content +available at \c{m.website.com} or \c{website.mobi}. There might also be an +additional \c{touch.website.com} access point targeted for higher-end +touch-screen browsers. + +\o \e{Dynamic Server-based Adaptation}. In this case, there is a single access +point, but the server sends different content, typically depending on the +\e{User-Agent} header included in all browsers' HTTP requests. This approach may leverage databases of device characteristics such as -\bold{WURFL} or \bold{DeviceAtlas}. - +\l{WURFL} or \l{DeviceAtlas}. \endlist This section describes how to provision CSS entirely on the mobile @@ -116,33 +100,27 @@ client. \section2 Media Types and Media Queries - If you only want to serve interfaces for desktop browsers and low-end - mobile browsers, - specify external CSS files within your HTML\'s \c{head} region using - media types: + If you only want to serve interfaces for desktop browsers and low-end mobile + browsers, specify external CSS files within your HTML's \c{head} region + using media types: \code <link media="screen" href="/path/to/desktop.css" type="text/css" rel="stylesheet"/> <link media="handheld" href="/path/to/mobile.css" type="text/css" rel="stylesheet"/> \endcode - The \c{media} attribute specifies different \bold{types} of browser: - \c{screen} for large-screen desktop browsers, - and \c{handheld} for mobile browsers. + The \c{media} attribute specifies different \e{types} of browser: \c{screen} + for large-screen desktop browsers, and \c{handheld} for mobile browsers. Browsers identifying themselves as \c{handheld} are served the - \bold{mobile.css} file, - which should specify a dramatically simplified mobile interface. - - A problem arises, - however, - when the majority of higher-end touch browsers identify themselves as - the \c{screen} media type, - to avoid being served overly simplified content that is beneath their - capabilities. - The example above serves a desktop-oriented design to later-generation - mobile browsers. - To target a higher-end mobile design to these browsers, - you need to specify additional media \bold{queries}: + \c{mobile.css} file, which should specify a dramatically simplified + mobile interface. + + A problem arises, however, when the majority of higher-end touch browsers + identify themselves as the \c{screen} media type, to avoid being served + overly simplified content that is beneath their capabilities. The example + above serves a desktop-oriented design to later-generation mobile browsers. + To target a higher-end mobile design to these browsers, you need to specify + additional media \c{queries}: \code <link media="only screen and (min-device-width: 481px)" href="/path/to/desktop.css" type="text/css" rel="stylesheet"/> @@ -163,23 +141,24 @@ client. } \endcode - The following example demonstrates a simple message identifying your - class of browser, - which appears dynamically based on CSS that is linked using media - types and media query syntax: + The following example demonstrates a simple message identifying your class + of browser, which appears dynamically based on CSS that is linked using + media types and media query syntax: \l{mob_mediaquery}{\inlineimage webkit-guide/scr_mob_mediaquery.png } + \e{Click on the image to view the example live in a browser or click on the + following links to view the CSS files.} + \l{mq_desktop_css}{(Desktop CSS)} \l{mq_touch_css}{(Touch-Screen CSS)} \l{mq_mobile_css}{(Low-end Mobile CSS)} - The following example shows a skeletal interface that appears - differently based on the type of browser viewing it. - The image below shows how it appears when viewed on a touch-based - browser, - but a desktop browser renders a more elaborate three-column layout: + The following example shows a skeletal interface that appears differently + based on the type of browser viewing it. The image below shows how it + appears when viewed on a touch-based browser, but a desktop browser renders + a more elaborate three-column layout: \l{mob_layout}{\inlineimage webkit-guide/scr_mob_layout.png } @@ -209,44 +188,37 @@ client. and (max-device-width: 1024px)" href="/path/to/ipad.css"/> \endcode - \section3 In-line Media Queries + \section2 In-line Media Queries - While it\'s generally good practice to keep CSS for different designs - within separate files, - you can also consolidate them. - The following example provides a default san-serif font styling for - \c{h1} elements, - then different sets of style sheets for three browser categories: + While it's generally good practice to keep CSS for different designs within + separate files, you can also consolidate them. The following example + provides a default san-serif font styling for \c{h1} elements, then + different sets of style sheets for three browser categories: - \code - h1 { font-family : Arial, sans-serif } - @media screen { - h1 { color: #00008B; } - } - @media only screen and (max-device-width: 480px) { - h1 { color: #00008B; font-size: medium; } - } - @media handheld { - h1 { font-size: medium; font-weight: bold } - } - \endcode + \code + h1 { font-family : Arial, sans-serif } + @media screen { + h1 { color: #00008B; } + } + @media only screen and (max-device-width: 480px) { + h1 { color: #00008B; font-size: medium; } + } + @media handheld { + h1 { font-size: medium; font-weight: bold } + } + \endcode - Consolidating style sheets in this manner may reduce the number of - separate HTTP requests, - help web designers to keep track of variations among designs, - and reduce style sheet properties defined redundantly in more than - one file. + Consolidating style sheets in this manner may reduce the number of separate + HTTP requests, help web designers to keep track of variations among designs, + and reduce style sheet properties defined redundantly in more than one file. \section2 Media Queries via JavaScript - Browsers that support media queries also support APIs to test them - from within JavaScript. - Browsers based on QtWebKit use the \c{matchMedia} API. - Some other browsers use a slightly different (and older) - \c{styleMedia} API, - which itself used to be called the \c{media} API. - Each can be called from the \c{window} object. - The following function accounts for all three cases: + Browsers that support media queries also support APIs to test them from + within JavaScript. Browsers based on QtWebKit use the \c{matchMedia} API. + Some other browsers use a slightly different (and older) \c{styleMedia} API, + which itself used to be called the \c{media} API. Each can be called from + the \c{window} object. The following function accounts for all three cases: \code function matchesMediaQuery(query) { @@ -261,13 +233,9 @@ client. \endcode The \c{query} argument corresponds to the media query string used to - activate the CSS. - For example, - the following higher-level function tests whether the browser matches - design categories provided simple labels such as - \c{desktop}, - \c{touch}, - or \c{mobile}: + activate the CSS. For example, the following higher-level function tests + whether the browser matches design categories provided simple labels such as + \c{desktop}, \c{touch}, or \c{mobile}: \code function isDesign(str) { @@ -285,10 +253,9 @@ client. } \endcode - You can then use the test whenever there is a need to assign - functionality for a specific design. - The following gathers a series of images and assigns different - panel-viewing functions for \c{desktop} and \c{touch} designs, + You can then use the test whenever there is a need to assign functionality + for a specific design. The following gathers a series of images and assigns + different panel-viewing functions for \c{desktop} and \c{touch} designs, with no functionality assigned to the lower-end \c{mobile} design: \code @@ -317,12 +284,10 @@ client. \section1 Selectors -Level 3 CSS provides many useful new \bold{selectors} that make it -easier to apply formatting to page elements. -In addition, -the \bold{Selectors API} makes DOM elements accessible using the same -CSS expressions you use to apply formatting to them. -The following show alternate ways to access elements: +Level 3 CSS provides many useful new \e{selectors} that make it easier to apply +formatting to page elements. In addition, the \l{Selectors API} makes DOM +elements accessible using the same CSS expressions you use to apply formatting +to them. The following show alternate ways to access elements: \code var element = document.getElementById('map'); @@ -337,22 +302,15 @@ selectors might be applied when formatting mobile interfaces. \section2 Attribute Matching - It is often useful to offer visual hints marking different kinds of - link. - Users might want to know the difference between a link to a page on - the same website and one on an external site. - Links to non-HTML file types might pose special challenges to mobile - users. - Alternately, - mobile users might get special benefit from telephone links. - - You can automate this by using the CSS attribute prefix and suffix - matching selectors. - The following uses \c{^=} to mark external HTTP links, - email, - SMS, - and telephone links, - by inserting an icon after the text of the link: + It is often useful to offer visual hints marking different kinds of link. + Users might want to know the difference between a link to a page on the same + website and one on an external site. Links to non-HTML file types might pose + special challenges to mobile users. Alternately, mobile users might get + special benefit from telephone links. + + You can automate this by using the CSS attribute prefix and suffix matching + selectors. The following uses \c{^=} to mark external HTTP links, email, + SMS, and telephone links, by inserting an icon after the text of the link: \code a[href^="http://"]:after, a[href^="https://"]:after @@ -362,8 +320,7 @@ selectors might be applied when formatting mobile interfaces. a[href^="tel:"]:after { content : url(icon/tel.gif); } \endcode - The following uses \c{$=} to identify various file types by common - suffixes: + The following uses \c{$=} to identify various file types by common suffixes: \code a[href$=".doc"]:after { content : url(icon/ms_word.gif) } @@ -374,17 +331,16 @@ selectors might be applied when formatting mobile interfaces. a[href$=".xls"]:after { content : url(icon/excel.jpg) } \endcode - You can also use \c{*=} to freely match substrings within any - attribute value. - The following might distinguish links to a site\'s blog area based on + You can also use \c{*=} to freely match substrings within any attribute + value. The following might distinguish links to a site's blog area based on how the URL is organized: \code a[href*="/blog/"]:after { content : url(icon/blog.jpg )} \endcode - The following example demonstrates links identified by dynamically - generated icons: + The following example demonstrates links identified by dynamically generated + icons: \l{layout_link-fmt}{\inlineimage webkit-guide/scr_layout_link-fmt.png } @@ -393,8 +349,8 @@ selectors might be applied when formatting mobile interfaces. \section2 Form Input State - The \c{:checked} dynamic class allows you to style radio and checkbox - inputs based on their selection state: + The \c{:checked} dynamic class allows you to style radio and checkbox inputs + based on their selection state: \code input[type=radio], @@ -406,116 +362,104 @@ selectors might be applied when formatting mobile interfaces. { text-align : left } \endcode - This enables the following mobile-friendly interface, - which converts small radio and check boxes to much more accessible - toggle buttons: + This enables the following mobile-friendly interface, which converts small + radio and check boxes to much more accessible toggle buttons: \l{form_toggler}{\inlineimage webkit-guide/scr_form_toggler.png } \l{form_toggler_css}{(CSS)} - Using the dynamic \c{:checked} CSS class, - the \c{text-align} property toggles from \c{left} to \c{right} - depending on whether the \c{input} is checked or not. - Note that to display button text, - dynamic classes can be chained together to form complex expressions: + Using the dynamic \c{:checked} CSS class, the \c{text-align} property + toggles from \c{left} to \c{right} depending on whether the \c{input} is + checked or not. Note that to display button text, dynamic classes can be + chained together to form complex expressions: \c{input[type=radio]:checked:before}. - The example also relies on the \c{-webkit-appearance} property, - which allows you to override the default visual presentation of - specialized interface elements such as radio and checkbox inputs. + The example also relies on the \c{-webkit-appearance} property, which allows + you to override the default visual presentation of specialized interface + elements such as radio and checkbox inputs. - The following example provides alternate styling for radio and - checkbox inputs, - presenting them as tappable buttons: + The following example provides alternate styling for radio and checkbox + inputs, presenting them as tappable buttons: \l{form_tapper}{\inlineimage webkit-guide/scr_form_tapper.png } \l{form_tapper_css}{(CSS)} - Form elements may also be re-styled based on whether they are - \c{:enabled} or \c{:disabled}. - In addition, - the \c{:focus} dynamic class allows you to style text form inputs or - other editable content regions that users have currently selected for - editing. + Form elements may also be re-styled based on whether they are \c{:enabled} + or \c{:disabled}. In addition, the \c{:focus} dynamic class allows you to + style text form inputs or other editable content regions that users have + currently selected for editing. \section2 Navigational Selectors Elements within a page that are the target of navigation can receive - distinct styling using the \c{:target} dynamic class. - The act of navigating to an element can alter its appearance, - or even determine if it is to appear at all. + distinct styling using the \c{:target} dynamic class. The act of navigating + to an element can alter its appearance, or even determine if it is to appear + at all. - The following example relies on anchor navigation to display - successive rows of a table within a mobile interface: + The following example relies on anchor navigation to display successive rows + of a table within a mobile interface: \l{layout_tbl-keyhole}{\inlineimage webkit-guide/scr_layout_tbl-keyhole.png } \l{layout_tbl-keyhole_css}{(CSS)} - While the example relies on table-related tags, - they are re-styled with block formatting to confine each row of - information within the screen. - Each row features links to other rows, - triggering their display. - Other links navigate away from the table, - which suppresses its display altogether. - This is the main CSS driving the interface: + While the example relies on table-related tags, they are re-styled with + block formatting to confine each row of information within the screen. Each + row features links to other rows, triggering their display. Other links + navigate away from the table, which suppresses its display altogether. This + is the main CSS driving the interface: \code .mobile > tbody > tr { display : none } .mobile > tbody > tr:target { display : block } \endcode - The same technique may be used to display or dismiss optional - interface elements such as panels, - simply by providing navigation links to them within the page. + The same technique may be used to display or dismiss optional interface + elements such as panels, simply by providing navigation links to them within + the page. \section2 Indirect Sibling Selector - The Level 2 \c{+} selector allows you to style elements that - immediately follow other specified elements. - For example, - the following refers to a paragraph that immediately - follows a heading at the same level of markup: + The Level 2 \c{+} selector allows you to style elements that immediately + follow other specified elements. For example, the following refers to a + paragraph that immediately follows a heading at the same level of markup: \code h1 + p { font-weight: bold } \endcode - In contrast, - the Level 3 \c{~} indirect sibling selector allows you to style any - subsequent element at the same level within the markup. - The following example styles any element that follows an \c{h2} that - is classed \c{pullquote}: + In contrast, the Level 3 \c{~} indirect sibling selector allows you to style + any subsequent element at the same level within the markup. The following + example styles any element that follows an \c{h2} that is classed + \c{pullquote}: \code h2 ~ .pullquote { font-size: 90% } \endcode - \bold{NOTE:} Webkit-based browsers do not yet allow you to style + \note Webkit-based browsers do not yet allow you to style elements dynamically via indirect sibling selectors. \section2 Positional Selectors Various dynamic classes allow you to style elements depending on their - position with a series of elements: either elements of the same type, - or other child elements of the same parent. - The following example aligns a series of icons to a grid: + position with a series of elements: either elements of the same type, or + other child elements of the same parent. The following example aligns a + series of icons to a grid: \l{css3_sel-nth}{\inlineimage webkit-guide/scr_css3_sel-nth.png } \l{css3_sel-nth_css}{(CSS)} - Columns are specified with the \c{:nth-of-type()} selector, - which accepts numeric expressions as arguments. - The following selectors refer to every fourth \c{img} element, - but offset by a specified number: + Columns are specified with the \c{:nth-of-type()} selector, which accepts + numeric expressions as arguments. The following selectors refer to every + fourth \c{img} element, but offset by a specified number: \code img { position: absolute } @@ -525,17 +469,13 @@ selectors might be applied when formatting mobile interfaces. img:nth-of-type(4n-0) { left: 77% } \endcode - Alternately, - keywords \c{odd} and \c{even} correspond to \c{2n-1} and - \c{2n} expressions. - These are useful, - for example, - when styling table rows with alternating background colors. + Alternately, keywords \c{odd} and \c{even} correspond to \c{2n-1} and \c{2n} + expressions. These are useful, for example, when styling table rows with + alternating background colors. - Rows are represented as the number of the element within the series, - plus a fixed number. - Each selector redefines the previous selector\'s upper range of - values: + Rows are represented as the number of the element within the series, plus a + fixed number. Each selector redefines the previous selector's upper range + of values: \code img:nth-of-type(n) { top: 5% } @@ -549,22 +489,14 @@ selectors might be applied when formatting mobile interfaces. Level 3 CSS defines the following positional selectors: \list + \o \c{:first-child}, \c{:last-child}, and \c{:only-child} refer to the first + or last child element within a series, or when it is the only one. - \o \c{:first-child}, - \c{:last-child}, - and \c{:only-child} refer to the first or last child element within a - series, - or when it is the only one. + \o \c{:first-of-type}, \c{:last-of-type}, and \c{:only-of-type} refer to the + first or last specified element within a series, or when it is the only one. - \o \c{:first-of-type}, - \c{:last-of-type}, - and \c{:only-of-type} refer to the first or last specified element - within a series, - or when it is the only one. - - \o \c{:nth-first-child()} and \c{:nth-last-child()} refer to the - specified child element positioned from the start or end of the - series. + \o \c{:nth-first-child()} and \c{:nth-last-child()} refer to the specified + child element positioned from the start or end of the series. \o \c{:nth-first-of-type()} and \c{:nth-last-of-type()} refer to the specified element positioned from the start or end of the series. @@ -604,24 +536,17 @@ selectors might be applied when formatting mobile interfaces. \section1 Visual Effects -QtWebKit supports numerous Level 3 CSS features. -This section briefly demonstrates how many of these recently available -visual features may be used to refine mobile web designs. - -These more advanced CSS3 effects tend to be available only on the -latest generation of mobile browsers. -Still, -it is safe to use them, -even if the design degrades somewhat for devices that don\'t support -them. -When a browser encounters CSS properties or values it can\'t -interpret, -it simply ignores them. -Designers can respond by providing fallback options to allow for -\bold{graceful degradation}. -For example, -the following CSS specifies a plain gray background in case the -browser does not support gradients: +QtWebKit supports numerous Level 3 CSS visual features. This section briefly +demonstrates how many of these recently available visual features may be used to +refine mobile web designs. + +These more advanced CSS3 effects tend to be available only on the latest +generation of mobile browsers. Still, it is safe to use them, even if the design +degrades somewhat for devices that don't support them. When a browser +encounters CSS properties or values it can't interpret, it simply ignores them. +Designers can respond by providing fallback options to allow for \e{graceful +degradation}. For example, the following CSS specifies a plain gray background +in case the browser does not support gradients: \code background: #aaaaaa; @@ -629,22 +554,17 @@ background: -webkit-gradient(linear, center top, center bottom, from(#777777), color-stop(50%,#dddddd), to(#777777) ); \endcode -Note that many of the CSS properties discussed in this section were -implemented relatively recently, -and vendors of browser rendering engines (such as WebKit) may still be -in the process of testing and standardizing their behavior. -These property names feature \bold{vendor prefixes} such as -\c{-webkit-} for WebKit, -\c{-moz-} for Mozilla, -and \c{-o-} for Opera. - -It may be possible to extend CSS properties to these various browsers -by providing vendor-specific syntax. -The following example shows how to extend the \c{border-image} -property to the Opera browser or Mozilla-based Fennec or the Maemo -Browser for Nokia N900. -It also shows the property\'s final name following the process of -standardization: +Note that many of the CSS properties discussed in this section were implemented +relatively recently, and vendors of browser rendering engines (such as WebKit) +may still be in the process of testing and standardizing their behavior. These +property names feature \e{vendor prefixes} such as \c{-webkit-} for WebKit, +\c{-moz-} for Mozilla, and \c{-o-} for Opera. + +It may be possible to extend CSS properties to these various browsers by +providing vendor-specific syntax. The following example shows how to extend the +\c{border-image} property to the Opera browser or Mozilla-based Fennec or the +Maemo Browser for Nokia N900. It also shows the property's final name following +the process of standardization: \code -webkit-border-image : url(img/border-frame.gif) 10 stretch stretch; @@ -653,36 +573,28 @@ standardization: border-image : url(img/border-frame.gif) 10 stretch stretch; \endcode -In some cases, -there are slight variations in the syntax each vendor expects as +In some cases, there are slight variations in the syntax each vendor expects as property values. \section2 Specifying Color and Opacity - Prior to CSS3, - there were three options when specifying color values: - named colors, - hexadecimal color values, - or RGB values. - CSS3 provides additional ways to specify colors: + Prior to CSS3, there were three options when specifying color values: named + colors, hexadecimal color values, or RGB values. CSS3 provides additional + ways to specify colors: \list - - \o \bold{HSL}. - Colors defined with the HSL model specify the - \bold{hue} as a radial or degree coordinate, - then its - \bold{saturation} and \bold{luminence} as percentages. - The following example specifies red and green values: + \o \e{HSL}. Colors defined with the HSL model specify the \e{hue} as a + radial or degree coordinate, then its \e{saturation} and \e{luminence} + as percentages. The following example specifies red and green values: \code background: hsl(0 , 100%, 60%); background: hsl(128, 75% , 33%); \endcode - \o \bold{HSLA}. + \o \e{HSLA}. Same as HSL, - but specifying an additional decimal \bold{alpha} value that + but specifying an additional decimal \e{alpha} value that corresponds to opacity. The following specifies a fully opaque red, followed by a partial transparency: @@ -692,9 +604,9 @@ property values. background: hsla(0, 100%, 60%, 0.5); \endcode - \o \bold{RGBA}. + \o \e{RGBA}. Same as RGB, - but specifying an additional decimal \bold{alpha} value that + but specifying an additional decimal \e{alpha} value that corresponds to opacity. The following the same transition from opaque to transparent as shown above: @@ -703,23 +615,19 @@ property values. background: rgba(100%, 0%, 0%, 1.0); background: rgba(100%, 0%, 0%, 0.5); \endcode - \endlist - With the addition of opacity to color definitions, - you can now also specify \c{transparent} as a color name. - Note that while RGBA and HSLA options are now available, - you can still use the familiar \c{opacity} property independently of - color definitions. + With the addition of opacity to color definitions, you can now also specify + \c{transparent} as a color name. Note that while RGBA and HSLA options are + now available, you can still use the familiar \c{opacity} property + independently of color definitions. \section2 Rounded Corners - In addition to removing harsh edges, - rounded corners often help distinguish active items from static - background elements. - Rounded corners are implemented using the \c{border-radius} property. - The following rounds off an edge to the same extent that interior - elements are offset: + In addition to removing harsh edges, rounded corners often help distinguish + active items from static background elements. Rounded corners are + implemented using the \c{border-radius} property. The following rounds off + an edge to the same extent that interior elements are offset: \code .rounded { @@ -728,21 +636,19 @@ property values. } \endcode - The following example demonstrates how rounded corners can enhance a - mobile design, - by marking the start and end of large regions of content, - such as a list of links: + The following example demonstrates how rounded corners can enhance a mobile + design, by marking the start and end of large regions of content, such as a + list of links: \l{layout_link-fmt}{\inlineimage webkit-guide/scr_layout_link-fmt.png } \l{layout_link-fmt_css}{(CSS)} - The greater the measurement applied to an element\'s \c{border-radius}, - the more dramatically rounded are its corners. - For example, - applying a \c{border-radius} that is half an element\'s overall - dimensions results in a circle: + The greater the measurement applied to an element's \c{border-radius}, the + more dramatically rounded are its corners. For example, applying a + \c{border-radius} that is half an element's overall dimensions results in a + circle: \code .circle { @@ -752,8 +658,8 @@ property values. } \endcode - You can also set each corner individually, - and specify a pair of values to achieve oval-shaped borders: + You can also set each corner individually, and specify a pair of values to + achieve oval-shaped borders: \code border-top-left-radius : 2em/1em; @@ -761,81 +667,65 @@ property values. \section2 Border Images - Border images allow you to apply customized marquee effects, - as in the following example: + Border images allow you to apply customized marquee effects, as in the + following example: \l{css3_border-img}{\inlineimage webkit-guide/scr_css3_border-img.png } \l{css3_border-img_css}{(CSS)} - In this case, - the image stretches to fit an element\'s dimensions: + In this case, the image stretches to fit an element's dimensions: \code -webkit-border-image : url(img/border-frame.gif) 10 stretch stretch; \endcode - As is true of the \c{border} property, - a single numeric argument specifies the width of the border as a - whole, - or up to four values to modify the width of each side. + As is true of the \c{border} property, a single numeric argument specifies + the width of the border as a whole, or up to four values to modify the width + of each side. - Any border image you specify substitutes some or all of an element\'s - normal border. - The \c{border-image} and \c{border-corner-image} each collectively + Any border image you specify substitutes some or all of an element's normal + border. The \c{border-image} and \c{border-corner-image} each collectively represent four more specific properties. - For \c{border-image}, - these properties are: - \list + For \c{border-image}, these properties are: + \list \o \c{border-top-image} \o \c{border-right-image} \o \c{border-bottom-image} \o \c{border-left-image} - \endlist - For \c{border-corner-image}, - these properties are: - + For \c{border-corner-image}, these properties are: \list - \o \c{border-top-left-image} \o \c{border-top-right-image} \o \c{border-bottom-right-image} \o \c{border-bottom-left-image} - \endlist - The \c{border-image} property specifies a single image for all four - edge borders. - The \c{border-corner-image} property specifies an image for all four - corner borders. - To specify images individually for any of the edge or corner borders, - use any of the eight individual properties. + The \c{border-image} property specifies a single image for all four edge + borders. The \c{border-corner-image} property specifies an image for all + four corner borders. To specify images individually for any of the edge or + corner borders, use any of the eight individual properties. When specifying any border edge or corner image values: \list - - \o A \c{stretch} value stretches one image to fill the element border - area, + \o A \c{stretch} value stretches one image to fill the element border area, as shown in the example above. - \o A \c{repeat} value repeats one image until it fills the element - border area and clips any overflow, - for example: + \o A \c{repeat} value repeats one image until it fills the element border + area and clips any overflow, for example: \code -webkit-border-image : url(img/border-frame.gif) 10 repeat repeat; \endcode - In this case the first \c{repeat} applies to top and bottom edge - borders, + In this case the first \c{repeat} applies to top and bottom edge borders, and the second applies to left and right edge borders. - \endlist \section2 Backgrounds @@ -849,12 +739,10 @@ property values. \l{css3_backgrounds_css}{(CSS)} \l{css3_backgrounds_js}{(JavaScript)} - By default, - tabs display a single icon image, - but when selected feature an additional gradient background image. - The following CSS shows how both icon and background can receive their - own series of specifications, - affecting their offset or whether each image repeats: + By default, tabs display a single icon image, but when selected feature an + additional gradient background image. The following CSS shows how both icon + and background can receive their own series of specifications, affecting + their offset or whether each image repeats: \code background-image : url(img/select.png) , url(img/gradient.jpg); @@ -862,29 +750,24 @@ property values. background-position : 12px 12px , 0 0; \endcode - In addition, - you may set the \c{background-size} property to - \c{contain} to scale images to the size of the containing element. - (Level 2 CSS allowed only specific measurements or percentages of the - image's size.) + In addition, you may set the \c{background-size} property to \c{contain} to + scale images to the size of the containing element. (Level 2 CSS allowed + only specific measurements or percentages of the image's size.) \section2 Text Shadow and Stroke - Shadows can be applied to text. - As the following example shows, - text shadows may interfere with the legibility of text, - and are seldom appropriate unless they\'re used for large, - sans-serif display headings: + Shadows can be applied to text. As the following example shows, text shadows + may interfere with the legibility of text, and are seldom appropriate unless + they're used for large, sans-serif display headings: \l{css3_text-shadow}{\inlineimage webkit-guide/scr_css3_text-shadow.png } \l{css3_text-shadow_css}{(CSS)} - In addition to the shadow\'s color, - the property accepts two measurements to represent its offset from the - text, - while the third specifies the extent to which the shadow is blurred: + In addition to the shadow's color, the property accepts two measurements to + represent its offset from the text, while the third specifies the extent to + which the shadow is blurred: \code h1,h2,h3,h4 { text-shadow : 0.25em 0.25em 0.25em #aaaaaa; } @@ -898,9 +781,8 @@ property values. \l{css3_text-stroke_css}{(CSS)} - In the following CSS, - \c{-webkit-text-fill-color} is synonymous with the standard \c{color} - property: + In the following CSS, \c{-webkit-text-fill-color} is synonymous with the + standard \c{color} property: \code -webkit-text-stroke-color : #000000; @@ -910,17 +792,14 @@ property values. \section2 Text Overflow - Web developers are familiar with the \c{overflow} property, - which can be used to hide content that exceeds an element\'s dimensions, - or else to make it accessible via scrolling. - CSS3 specifies an additional \c{text-overflow} property that allows - you to add ellipses as a suffix to any text that overflows the - element, - to indicate the presence of additional text. + Web developers are familiar with the \c{overflow} property, which can be + used to hide content that exceeds an element's dimensions, or else to make + it accessible via scrolling. CSS3 specifies an additional \c{text-overflow} + property that allows you to add ellipses as a suffix to any text that + overflows the element, to indicate the presence of additional text. - The following example shows how the \c{text-overflow} property allows - you to present user-selectable links to expanded regions of text - within a page: + The following example shows how the \c{text-overflow} property allows you to + present user-selectable links to expanded regions of text within a page: \l{css3_text-overflow}{\inlineimage webkit-guide/scr_css3_text-overflow.png } @@ -928,8 +807,8 @@ property values. \l{css3_text-overflow_css}{(CSS)} \l{css3_text-overflow_js}{(JavaScript)} - Use the \c{text-overflow} property in conjunction with \c{overflow} - and \c{white-space}: + Use the \c{text-overflow} property in conjunction with \c{overflow} and + \c{white-space}: \code text-overflow : ellipsis; @@ -937,55 +816,48 @@ property values. white-space : nowrap; \endcode - For \c{text-overflow} to work, - the element\'s \c{white-space} must be set to \c{nowrap}, - overriding the default \c{normal} value. - This prevents words from wrapping onto another line as is standard - behavior outside the \c{pre} tag, - and forces text past the right edge of the element. + For \c{text-overflow} to work, the element's \c{white-space} must be set to + \c{nowrap}, overriding the default \c{normal} value. This prevents words + from wrapping onto another line as is standard behavior outside the \c{pre} + tag, and forces text past the right edge of the element. - (The element\'s \c{text-overflow} may specify both \c{ellipsis} and - \c{ellipsis-word}, - the latter of which is not as widely implemented.) + (The element's \c{text-overflow} may specify both \c{ellipsis} and + \c{ellipsis-word}, the latter of which is not as widely implemented.) \section2 Custom Scrollbars - In general, - scrollable elements should be avoided wherever possible - within mobile interfaces. - Drag gestures already allow users to scroll windows vertically, - and narrow mobile screens are not suitable for overly wide content. + In general, scrollable elements should be avoided wherever possible within + mobile interfaces. Drag gestures already allow users to scroll windows + vertically, and narrow mobile screens are not suitable for overly wide + content. In cases where content can only be viewed within a scrolling window, - scrollbars can be reformatted to make them more accessible to mobile - users. - The following example presents a block of code within a touch-enabled - mobile interface: + scrollbars can be reformatted to make them more accessible to mobile users. + The following example presents a block of code within a touch-enabled mobile + interface: \l{css3_scroll}{\inlineimage webkit-guide/scr_css3_scroll.png } \l{css3_scroll_css}{(CSS)} - This interface uses standard scrollbars, - but their appearance is enhanced using low-level \bold{pseudo-element} - CSS classes that refer to individual components within the scrollbar. + This interface uses standard scrollbars, but their appearance is enhanced + using low-level \e{pseudo-element} CSS classes that refer to individual + components within the scrollbar. - Simply by invoking the following CSS selector, - you disable scrollbars\' default appearance: + Simply by invoking the following CSS selector, you disable scrollbars' + default appearance: \code pre::-webkit-scrollbar { height : 3em } \endcode - In this case, - the specified property increases the scrollbar\'s default \c{height} - to make it easier for mobile users to tap it with their fingers. + In this case, the specified property increases the scrollbar's default + \c{height} to make it easier for mobile users to tap it with their fingers. Each additional scrollbar component must then be explicitly defined, - otherwise it does not render. - The following CSS provides custom styling for the horizontal panning - buttons: + otherwise it does not render. The following CSS provides custom styling for + the horizontal panning buttons: \code ::-webkit-scrollbar-button:increment { @@ -1004,46 +876,40 @@ property values. } \endcode - In this case, - the scrollbar region between the two navigation icons is still active, - but not obviously so since its visual formatting has been overridden. - The simpler set of controls is far more suitable for a mobile + In this case, the scrollbar region between the two navigation icons is still + active, but not obviously so since its visual formatting has been + overridden. The simpler set of controls is far more suitable for a mobile interface. Webkit provides pseudo-elements for the following components: \list + \o \c{scrollbar} refers to scrollbar as a whole. Additional dynamic classes + can be appended to specify \c{:vertical} and \c{:horizontal} scrollbars. The + \c{:corner-present} dynamic class activates when both scrollbars are + present. - \o \c{scrollbar} refers to scrollbar as a whole. - Additional dynamic classes can be appended to specify \c{:vertical} - and \c{:horizontal} scrollbars. - The \c{:corner-present} dynamic class activates when both scrollbars - are present. - - \o \c{scrollbar-button} refers to incremental navigation buttons. - Each button can be styled separately with \c{:increment} and - \c{:decrement} dynamic classes. + \o \c{scrollbar-button} refers to incremental navigation buttons. Each + button can be styled separately with \c{:increment} and \c{:decrement} + dynamic classes. - \o \c{scrollbar-thumb} refers to the scrollbar\'s slider control. + \o \c{scrollbar-thumb} refers to the scrollbar's slider control. \o \c{scrollbar-track} refers to the active navigation region between buttons. - \o \c{scrollbar-track-piece} refers to each portion of the track on - either side of the thumb control. - These can be styled separately using \c{:start} and \c{:end} dynamic - classes. - - \o \c{scrollbar-corner} refers to the corner where scrollbar tracks - meet. - The \c{resizer} pseudo-element also refers to this corner, - but for resizable elements such as \c{textarea}. + \o \c{scrollbar-track-piece} refers to each portion of the track on either + side of the thumb control. These can be styled separately using \c{:start} + and \c{:end} dynamic classes. - \o The \c{:double-button} and \c{:single-button} dynamic classes refer - to whether incrementor and decrementors are paired together - redundantly at each end of the track, - while \c{:no-button} refers to whether they display at all. + \o \c{scrollbar-corner} refers to the corner where scrollbar tracks meet. + The \c{resizer} pseudo-element also refers to this corner, but for resizable + elements such as \c{textarea}. + \o The \c{:double-button} and \c{:single-button} dynamic classes refer to + whether incrementor and decrementors are paired together redundantly at each + end of the track, while \c{:no-button} refers to whether they display at + all. \endlist \bold{See Also:} @@ -1052,11 +918,9 @@ property values. \section2 Gradients - Gradients provide a graduated shading effect that can add subtle - texture to background elements, - and can provide buttons a three-dimensional, - beveled appearance. - Explicit support for gradients means there's no longer a need to + Gradients provide a graduated shading effect that can add subtle texture to + background elements, and can provide buttons a three-dimensional, beveled + appearance. Explicit support for gradients means there's no longer a need to implement them as repeating background images. Specify gradients using CSS properties such as the following: @@ -1067,59 +931,52 @@ property values. from(#dddddd), to(#777777) ); \endcode - Note the pair of \c{background} statements. - The first specifies a monochrome fallback color for browsers that do - not support gradients. + Note the pair of \c{background} statements. The first specifies a monochrome + fallback color for browsers that do not support gradients. - The function specifies a simple \c{linear} gradient from the top to - the bottom of the element, - shifting from a light to a darker gray. + The function specifies a simple \c{linear} gradient from the top to the + bottom of the element, shifting from a light to a darker gray. - The following example shows how this gradient can be applied to a - background element: + The following example shows how this gradient can be applied to a background + element: \l{css3_gradientBack}{\inlineimage webkit-guide/scr_css3_gradientBack.png } \l{css3_gradientBack_css}{(CSS)} - Gradients cannot be applied to the \c{body} element. - Instead, - they are here applied to an element covers the background. + Gradients cannot be applied to the \c{body} element. Instead, they are here + applied to an element that covers the background. - You can specify more than one gradient for the same element. - The following shifts from a dark to a light gray halfway down the - element, - then back to dark: + You can specify more than one gradient for the same element. The following + shifts from a dark to a light gray halfway down the element, then back to + dark: \code background: -webkit-gradient(linear, center top, center bottom, from(#777777), color-stop(50%, #dddddd), to(#777777) ); \endcode - Here is how the additional \c{color-stop} appears when applied to the - same background element: + Here is how the additional \c{color-stop} appears when applied to the same + background element: \l{css3_gradientBackStop}{\inlineimage webkit-guide/scr_css3_gradientBackStop.png } \l{css3_gradientBackStop_css}{(CSS)} - Gradients can also provide a textured, - three-dimensional appearance for buttons. - In the following example, - the gradient is inverted and darkened when each button is pressed: + Gradients can also provide a textured, three-dimensional appearance for + buttons. In the following example, the gradient is inverted and darkened + when each button is pressed: \l{css3_gradientButton}{\inlineimage webkit-guide/scr_css3_gradientButton.png } \l{css3_gradientButton_css}{(CSS)} - In addition to linear gradients, - CSS3 also specifies \bold{radial} gradients that emanate from a single - point. - The following example demonstrates a colorful radial gradient used to - mark where users touch the screen: + In addition to linear gradients, CSS3 also specifies \bold{radial} gradients + that emanate from a single point. The following example demonstrates a + colorful radial gradient used to mark where users touch the screen: \l{css3_grad-radial}{\inlineimage webkit-guide/scr_css3_grad-radial.png } @@ -1127,38 +984,31 @@ property values. \l{css3_grad-radial_css}{(CSS)} \l{css3_grad-radial_js}{(JavaScript)} - The syntax is slightly different than for lineal gradients. - The first two comma-separated arguments after the \c{radial} statement - specify the coordinates of the inner circle, - and its radius. - The next two arguments specify the coordinates and radius of the outer - circle: + The syntax is slightly different than for linear gradients. The first two + comma-separated arguments after the \c{radial} statement specify the + coordinates of the inner circle, and its radius. The next two arguments + specify the coordinates and radius of the outer circle: \code background: -webkit-gradient(radial, 90 120, 5, 100 130, 48, from(#777777), color-stop(50%, #dddddd), to(#777777) ); \endcode - The use of \c{from} and \c{to} values and \c{color-stop} are same as - for linear gradients. + The use of \c{from}, \c{to} values and \c{color-stop} in radial gradients + are the same as for linear gradients. \section2 Reflections - Reflections offer a mirror-like effect which, - in the following example, - adds a sense of weight to headings and images: + Reflections offer a mirror-like effect which, in the following example, adds + a sense of weight to headings and images: \l{css3_reflect}{\inlineimage webkit-guide/scr_css3_reflect.png } \l{css3_reflect_css}{(CSS)} - The property's syntax specifies the edge of the element at which to - reflect, - the offset, - and an overlay color. - In this case, - the color is a gradient, + The property's syntax specifies the edge of the element at which to reflect, + the offset, and an overlay color. In this case, the color is a gradient, which causes the reflection to gradually fade: \code @@ -1169,11 +1019,9 @@ property values. \section2 Masks - Masks offer a way to modify an image by overlaying either another - image, - or a gradient. - The following example shows a series of thumbnail images that appear - faded at their bottom edge until selected: + Masks offer a way to modify an image by overlaying either another image, or + a gradient. The following example shows a series of thumbnail images that + appear faded at their bottom edge until selected: \l{css3_mask-grad}{\inlineimage webkit-guide/scr_css3_mask-grad.png } @@ -1181,30 +1029,30 @@ property values. \l{css3_mask-grad_css}{(CSS)} \l{css3_mask-grad_js}{(JavaScript)} - The gradient\'s opacity shifts from 1 to 0, - an effect that translates to the image: + The gradient's opacity shifts from \c 1 to \c 0, an effect that translates + to the image: \code -webkit-mask-box-image : -webkit-gradient(linear, left top, left bottom, from(rgba(0, 0, 0, 1)), to(rgba(0, 0, 0, 0))); \endcode - The following example demonstrates an image used as a mask to frame - another image: + The following example demonstrates an image used as a mask to frame another + image: \l{css3_mask-img}{\inlineimage webkit-guide/scr_css3_mask-img.png } \l{css3_mask-img_css}{(CSS)} - Separately, - the component images look like this: + Separately, the component images look like these: + + \inlineimage webkit-guide/mask0.png + \inlineimage webkit-guide/mask1.png - \image webkit-guide/mask0.png - \image webkit-guide/mask1.png - The syntax is the same for border images, - and allows you to stretch one image over the other: + The syntax is the same for border images, and allows you to stretch one + image over the other: \code -webkit-mask-box-image : url(img/mask.png) 5% stretch; @@ -1212,174 +1060,138 @@ property values. \section1 Dynamic CSS -Animations help enhance touch-based mobile interfaces in many ways. -They help ease transitions from one display state to another that -might otherwise appear jarring. -They help provide a sense of navigational orientation. -They also often simulate tactile feedback as users\' touches result in -a tangible visual effect. -Overall, -they add a sense of vibrancy that increases users\' -engagement with the content on display. - -Support by QtWebKit for HTML5 allows you to choose from among several -flavors of web-based animation: -Canvas, -SVG, -and Level 3 CSS. -Web developers may also be familiar with lower-level JavaScript-based -animation techniques, -which form the basis of many popular JavaScript libraries such as -jQuery and Prototype. -This section focuses on CSS-based animations, -since they are more appropriate to integrate throughout a web design, -without the additional overhead JavaScript libraries require. -Like Flash, -SVG and Canvas offer more specialized, -low-level graphics frameworks whose animation features -are more appropriate for generating standalone effects. - -This section demonstrates animation techniques by offering a series of -examples that apply to common mobile design tasks. -While some of these tasks are addressed by existing JavaScript -frameworks such as jQuery and Prototype, -the examples provided here illustrate some CSS-only alternatives. +Animations help enhance touch-based mobile interfaces in many ways. They help +ease transitions from one display state to another that might otherwise appear +jarring. They help provide a sense of navigational orientation. They also often +simulate tactile feedback as users' touches result in a tangible visual effect. +Overall, they add a sense of vibrancy that increases users' engagement with the +content on display. + +Support by QtWebKit for HTML5 allows you to choose from among several flavors of +web-based animation: Canvas, SVG, and Level 3 CSS. Web developers may also be +familiar with lower-level JavaScript-based animation techniques, which form the +basis of many popular JavaScript libraries such as jQuery and Prototype. This +section focuses on CSS-based animations, since they are more appropriate to +integrate throughout a web design, without the additional overhead JavaScript +libraries require. Like Adobe Flash, SVG and Canvas offer more specialized, +low-level graphics frameworks whose animation features are more appropriate for +generating standalone effects. + +This section demonstrates animation techniques by offering a series of examples +that apply to common mobile design tasks. While some of these tasks are +addressed by existing JavaScript frameworks such as jQuery and Prototype, the +examples provided here illustrate some CSS-only alternatives. \section2 CSS Animation Concepts Level 3 CSS introduces three distinct concepts that are relevant when - crafting dynamic effects, - which are discussed in the following sections: + crafting dynamic effects, which are discussed in the following sections: \list - - \o \bold{Transforms} offer a series of manipulations to screen - elements. - By themselves, - transforms present only static visual effects, - but they become especially useful as part of dynamic transitions and - animations. - Simple transforms are two-dimensional, - with three-dimensional transforms gaining gradual support. - - \o \bold{Transitions} entail a graduated shift from one explicit - display state to another. - Transitional shifts apply to any CSS property that specifies numeric - or color values. - - \o \bold{Animations} offer more complex sequences of transitions that - can specify many intermediate display states. - Unlike simple transitions, + \o \e{Transforms} offer a series of manipulations to screen elements. By + themselves, transforms present only static visual effects, but they become + especially useful as part of dynamic transitions and animations. Simple + transforms are two-dimensional, with three-dimensional transforms gaining + gradual support. + + \o \e{Transitions} entail a graduated shift from one explicit display + state to another. Transitional shifts apply to any CSS property that + specifies numeric or color values. + + \o \e{Animations} offer more complex sequences of transitions that can + specify many intermediate display states. Unlike simple transitions, animations can also be initiated more freely. - \endlist \section2 2D Transforms - Transforms allow you to freely displace box elements from where they - would ordinarily appear. - Several transform functions are available, - allowing you to \bold{scale}, - \bold{rotate}, - \bold{skew}, - or \bold{translate} (move) objects. + Transforms allow you to freely displace box elements from where they would + ordinarily appear. Several transform functions are available, allowing you + to \e{scale}, \e{rotate}, \e{skew}, or \e{translate} (move) objects. - The \c{translate} function moves an element from its default location, - and accepts \bold{x} and \bold{y} measurements as arguments. - The following moves an element off the right edge of the screen: + The \c{translate} function moves an element from its default location, and + accepts \c{x} and \c{y} measurements as arguments. The following moves an + element off the right edge of the screen: \code -webkit-transform: translate(120%, 0); \endcode - Alternately, - \c{translateX} and \c{translateY} functions allow you to specify each - axis independently. - This moves the element off the top of the screen: + Alternately, \c{translateX} and \c{translateY} functions allow you to + specify each axis independently. This moves the element off the top of the + screen: \code -webkit-transform: translateX(0.0) translateY(-120%); \endcode - Scale transforms allow you enlarge or shrink an element, - with the scale expressed as a decimal. - By itself, - \c{scale} modifies height and width proportionately, - but the alternative \c{scaleX} and \c{scaleY} functions allow you to - constrain scaling to a single axis. + Scale transforms allow you enlarge or shrink an element, with the scale + expressed as a decimal. By itself, \c{scale} modifies height and width + proportionately, but the alternative \c{scaleX} and \c{scaleY} functions + allow you to constrain scaling to a single axis. - The following animation demonstrates a \c{translate} function, - which moves the element from off the screen, - followed by series of \c{scale}, - \c{scaleX}, - and \c{scaleY} functions: + The following animation demonstrates a \c{translate} function, which moves + the element from off the screen, followed by series of \c{scale}, + \c{scaleX}, and \c{scaleY} functions: \l{anim_demo-scale}{\inlineimage webkit-guide/scr_anim_demo-scale.png } \l{anim_demo-scale_css}{(CSS)} - By default, - transforms originate from the center of the element, - but you can specify any edge using the \c{-webkit-transform-origin} - property. - The following reduces an element to 75% of its original size, - while keeping it at its original bottom edge: + By default, transforms originate from the center of the element, but you can + specify any edge using the \c{-webkit-transform-origin} property. The + following reduces an element to 75% of its original size, while keeping it + at its original bottom edge: \code -webkit-transform : scale(0.75); -webkit-transform-origin : bottom; \endcode - The following example uses this scale transform to shrink icons that - are assigned to in-line links, - with icons aligning to the text\'s baseline: + The following example uses this scale transform to shrink icons that are + assigned to in-line links, with icons aligning to the text's baseline: \l{layout_link-fmt}{\inlineimage webkit-guide/scr_layout_link-fmt.png } \l{layout_link-fmt_css}{(CSS)} - The \c{rotate} function accepts degree or radian arguments, - with negative arguments specifying counter-clockwise motion. - The following animation demonstrates two rotations: the first clockwise around the - element\'s center point, - and the second counter-clockwise around the top left corner: + The \c{rotate} function accepts degree or radian arguments, with negative + arguments specifying counter-clockwise motion. The following animation + demonstrates two rotations: the first clockwise around the element's center + point, and the second counter-clockwise around the top left corner: \l{anim_demo-rotate}{\inlineimage webkit-guide/scr_anim_demo-rotate.png } \l{anim_demo-rotate_css}{(CSS)} - The \c{skew} function also accepts positive or negative degree - arguments, - specifying the extent to which to modify the bottom left corner\'s - 90-degree angle. - The \c{skew} and \c{skewX} functions shift the element horizontally, - but the alternative \c{skewY} function shifts the element vertically. - The following animation demonstrates a \c{skewX} followed by a - \c{skewY}: + The \c{skew} function also accepts positive or negative degree arguments, + specifying the extent to which to modify the bottom left corner's 90-degree + angle. The \c{skew} and \c{skewX} functions shift the element horizontally, + but the alternative \c{skewY} function shifts the element vertically. The + following animation demonstrates a \c{skewX} followed by a \c{skewY}: \l{anim_demo-skew}{\inlineimage webkit-guide/scr_anim_demo-skew.png } \l{anim_demo-skew_css}{(CSS)} - In the following example, - a variety of transforms make a set of three navigational tab icons - appear to be part of a cube: + In the following example, a variety of transforms make a set of three + navigational tab icons appear to be part of a cube: \l{anim_tabbedSkew}{\inlineimage webkit-guide/scr_anim_tabbedSkew.png } \l{anim_tabbedSkew_css}{(CSS)} - The example also implements the tab icons as internal links that - activate display of content using the \c{:target} dynamic class. - See the \l{Navigational Selectors} section for more information. + The example also implements the tab icons as internal links that activate + display of content using the \c{:target} dynamic class. See the + \l{Navigational Selectors} section for more information. - Note that transforms can include any combination of the functions - described above: + Note that transforms can include any combination of the functions described + above: \code nav > a:nth-of-type(3) { @@ -1391,20 +1203,16 @@ the examples provided here illustrate some CSS-only alternatives. \section2 Transitions Transitions allow you to gradually shift from one defined CSS state to - another. - Any CSS property expressed as a numeric or color value (including a - color name or hex value) can be transitioned between two style - sheets. - Properties such as \c{display} that have discrete sets of named - values, - such as the \c{display} property's \bold{block} or \bold{none} values, - cannot be transitioned. - In cases where named values translate internally to numeric values, - such as the \c{border-width} property's \c{thin} and \c{thick} values, - they can be transitioned. - - The following example shows a series of transitions from a collapsed - icon state to an expanded panel: + another. Any CSS property expressed as a numeric or color value (including a + color name or hex value) can be transitioned between two style sheets. + Properties such as \c{display} that have discrete sets of named values, such + as the \c{display} property's \c{block} or \c{none} values, cannot be + transitioned. In cases where named values translate internally to numeric + values, such as the \c{border-width} property's \c{thin} and \c{thick} + values, they can be transitioned. + + The following example shows a series of transitions from a collapsed icon + state to an expanded panel: \l{anim_panel}{\inlineimage webkit-guide/scr_anim_panel.png } @@ -1412,10 +1220,9 @@ the examples provided here illustrate some CSS-only alternatives. \l{anim_panel_css}{(CSS)} \l{anim_panel_js}{(JavaScript)} - Each style sheet specifies a different \c{max-width} value, - and each accompanying transition, - defined separately for each state, - allows the value to shift over the course of half a second: + Each style sheet specifies a different \c{max-width} value, and each + accompanying transition, defined separately for each state, allows the value + to shift over the course of half of a second: \code nav.expanded { @@ -1428,8 +1235,7 @@ the examples provided here illustrate some CSS-only alternatives. } \endcode - That appreviated syntax can be expanded to several different - properties: + That shorthand syntax can be expanded to several different properties: \code nav.expanded { @@ -1446,17 +1252,15 @@ the examples provided here illustrate some CSS-only alternatives. } \endcode - Available transition functions include \c{linear}, - \c{ease-in}, - \c{ease-out}, - \c{ease-in-out} and \c{cubic-bezier}. + Available transition functions include \c{linear}, \c{ease-in}, + \c{ease-out}, \c{ease-in-out} and \c{cubic-bezier}. Note that the \c{max-width} properties in both style sheets both use - percentages to specify measurements. - Transitions may not work properly if you shift from one unit to another. + percentages to specify measurements. Transitions may not work properly if + you shift from one unit to another. - The example above specifies an additional set of transitions affecting - the icons nested within the navigation panel: + The example above specifies an additional set of transitions affecting the + icons nested within the navigation panel: \code nav.expanded > .option { @@ -1471,25 +1275,21 @@ the examples provided here illustrate some CSS-only alternatives. } \endcode - The shifting \c{scale} transform makes icons appear to zoom in to fill - the space, - while \c{opacity} makes them fade in. - Specifying \c{all} as the transition property applies to any valid - property that differs between the two states. + The shifting \c{scale} transform makes icons appear to zoom in to fill the + space, while \c{opacity} makes them fade in. Specifying \c{all} as the + transition property applies to any valid property that differs between the + two states. - These nested transitions execute at the same time as those assigned to - the parent \c{nav} element. - The combined effect appears to be a single transition. + These nested transitions execute at the same time as those assigned to the + parent \c{nav} element. The combined effect appears to be a single + transition. \section2 Transitional Sequences - The prior example showed a single transition, - but transitions can also be run in sequence to form more complex - animations. - The following example demonstrates an embedded navigation panel that, - when pressed, - expands horizontally, - then vertically to reveal numerous navigation options: + The prior example showed a single transition, but transitions can also be + run in sequence to form more complex animations. The following example + demonstrates an embedded navigation panel that, when pressed, expands + horizontally, then vertically to reveal numerous navigation options: \l{anim_accord}{\inlineimage webkit-guide/scr_anim_accord.png } @@ -1497,8 +1297,8 @@ the examples provided here illustrate some CSS-only alternatives. \l{anim_accord_css}{(CSS)} \l{anim_accord_js}{(JavaScript)} - The style sheets specify separate, - comma-separated transitions for \c{width} and \c{height} properties: + The style sheets specify separate, comma-separated transitions for \c{width} + and \c{height} properties: \code #accordion.expanded { @@ -1519,8 +1319,8 @@ the examples provided here illustrate some CSS-only alternatives. } \endcode - Each transition\'s additional time measurement specifies a delay. - The long-form syntax may make this clearer: + Each transition's additional time measurement specifies a delay. The + long-form syntax may make this clearer: \code #accordion.expanded { @@ -1541,27 +1341,21 @@ the examples provided here illustrate some CSS-only alternatives. } \endcode - The shift to the \c{expanded} state involves two transitions, - each of which lasts half a second and relies on the same - \c{ease-in-out} function. - The first takes place immediately and affects the \c{width} property. - The second, - affecting the \c{height} property, - takes place after a delay that matches the first transition\'s - duration. - The reverse transition is much the same, - only the \c{height} property transitions before the \c{width} to + The shift to the \c{expanded} state involves two transitions, each of which + lasts half a second and relies on the same \c{ease-in-out} function. The + first takes place immediately and affects the \c{width} property. The + second, affecting the \c{height} property, takes place after a delay that + matches the first transition's duration. The reverse transition is much the + same, only the \c{height} property transitions before the \c{width} to reverse the effect. - In addition to the navigation element\'s sequence of transitions, - nested accordion-style animations activate when users expand top-level - headings. - Subheadings are revealed using a \c{scaleY} transform, - which makes them appear as if they are flipping upwards. + In addition to the navigation element's sequence of transitions, nested + accordion-style animations activate when users expand top-level headings. + Subheadings are revealed using a \c{scaleY} transform, which makes them + appear as if they are flipping upwards. - The following example shows a photo gallery interface that uses the - same techniques. - (Size the window to emulate a smaller mobile screen.) + The following example shows a photo gallery interface that uses the same + techniques. (Size the window to emulate a smaller mobile screen.) \l{anim_gallery}{\inlineimage webkit-guide/scr_anim_gallery.png } @@ -1569,20 +1363,15 @@ the examples provided here illustrate some CSS-only alternatives. \l{anim_gallery_css}{(CSS)} \l{anim_gallery_js}{(JavaScript)} - The main interface uses simple transitions affecting \c{opacity}, - along with \c{scale} and \c{translate} transforms, - which combined make queued images appear dimmer, - smaller, - and horizontally offset from the main image. - - A separate sequence of transitions activates when users tap selected - images. - The first transition uses a \c{scaleX} transform to flip the image - towards the center. - The second then flips out a panel featuring details on the photo. - When users navigate away to adjacent photos, - the panel automatically flips back to its original state as it is - moved to the side. + The main interface uses simple transitions affecting \c{opacity}, along with + \c{scale} and \c{translate} transforms, which combined make queued images + appear dimmer, smaller, and horizontally offset from the main image. + + A separate sequence of transitions activates when users tap selected images. + The first transition uses a \c{scaleX} transform to flip the image towards + the center. The second then flips out a panel featuring details on the + photo. When users navigate away to adjacent photos, the panel automatically + flips back to its original state as it is moved to the side. Another example shows an interface featuring a simple list of items: @@ -1592,44 +1381,37 @@ the examples provided here illustrate some CSS-only alternatives. \l{anim_skew_css}{(CSS)} \l{anim_skew_js}{(JavaScript)} - When dismissed, - items are wiped off the screen using a \c{skew} transform that - provides the illusion of speed. - Remaining items move upwards to fill the space vacated by items that - have been removed. - - This example uses the same technique of sequential transitions. - The first transition applies to the combined \c{translate}/\c{skew} - transform. - The second, - delayed transition modifies the \c{top} property to align remaining + When dismissed, items are wiped off the screen using a \c{skew} transform + that provides the illusion of speed. Remaining items move upwards to fill + the space vacated by items that have been removed. + + This example uses the same technique of sequential transitions. The first + transition applies to the combined \c{translate}/\c{skew} transform. The + second, delayed transition modifies the \c{top} property to align remaining items to a grid. - Note that for items to reposition themselves in this example, - a vertical grid must be explicitly specified. - You can only apply transitions between properties you explicitly - define and activate, - not between values the browser assigns internally to automatically - position elements relative to each other. + Note that for items to reposition themselves in this example, a vertical + grid must be explicitly specified. You can only apply transitions between + properties you explicitly define and activate, not between values the + browser assigns internally to automatically position elements relative to + each other. \section2 Keyframe Animations - The previous section showed how you can chain sequences of transitions - to produce complex effects. - Animations also allow you to define many intermediary interface states, - but using a far simpler syntax, - and not assigned to transitions between CSS states. + The previous section showed how you can chain sequences of transitions to + produce complex effects. Animations also allow you to define many + intermediary interface states, but using a far simpler syntax, and not + assigned to transitions between CSS states. - The following example shows a simple animation of icons that pulse - when selected: + The following example shows a simple animation of icons that pulse when + selected: \l{anim_pulse}{\inlineimage webkit-guide/scr_anim_pulse.png } \l{anim_pulse_css}{(CSS)} - It uses the following CSS, - shown here in both abbreviated and long form: + It uses the following CSS, shown here in both abbreviated and long form: \code nav > a:target { -webkit-animation : pulse 1s infinite; } @@ -1641,8 +1423,8 @@ the examples provided here illustrate some CSS-only alternatives. } \endcode - You supply a \bold{name} for the animation that corresponds to a - \bold{keyframes} rule defined separately within your CSS: + You supply a \c{name} for the animation that corresponds to a + \c{keyframes} rule defined separately within your CSS: \code @-webkit-keyframes pulse { @@ -1651,29 +1433,24 @@ the examples provided here illustrate some CSS-only alternatives. } \endcode - Percentages mark new animation states within the course of the - animation, - and behave much like CSS selectors. - In this case, - the animation shifts between two separate states over - the course of a second: - opaque and slightly dimmed. - With its \c{iteration-count} set to \c{infinite} rather than a set - number, - the animation only stops when the link is no longer selected. + Percentages mark new animation states within the course of the animation, + and behave much like CSS selectors. In this case, the animation shifts + between two separate states over the course of a second: opaque and slightly + dimmed. With its \c{iteration-count} set to \c{infinite} rather than a set + number, the animation only stops when the link is no longer selected. The following example demonstrates a popular mobile design pattern - implemented with CSS. - Navigation to nested subheads appears to wipe to the right, - while navigating upwards in the hierarchy appears to wipe to the left: + implemented with CSS. Navigation to nested subheads appears to wipe to the + right, while navigating upwards in the hierarchy appears to wipe to the + left: \l{anim_slide1}{\inlineimage webkit-guide/scr_anim_slide1.png } \l{anim_slide_css}{(CSS)} - It relies on keyframes rules such as the following, - which define a simple start and end state: + It relies on keyframes rules such as the following, which define a simple + start and end state: \code @-webkit-keyframes slide_in { @@ -1688,25 +1465,22 @@ the examples provided here illustrate some CSS-only alternatives. } \endcode - Unlike a transition, - the animation is triggered immediately when the page loads, - but only if the target of navigation is an anchor whose ID - is \bold{in} or \bold{out}. - If you navigate to the page itself, - no animation occurs. + Unlike a transition, the animation is triggered immediately when the page + loads, but only if the target of navigation is an anchor whose ID is + \c{in} or \c{out}. If you navigate to the page itself, no animation + occurs. - The following example uses a keyframe animation to scroll through - banner options at the top of the screen: + The following example uses a keyframe animation to scroll through banner + options at the top of the screen: \l{css3_multicol}{\inlineimage webkit-guide/scr_css3_multicol.png } \l{css3_multicol_css}{(CSS)} - The animation defines a set of rapid shifts alternating with long - static phases. - It modifies the left offset of an element that is five times the width - of the window. + The animation defines a set of rapid shifts alternating with long static + phases. It modifies the left offset of an element that is five times the + width of the window. \code @-webkit-keyframes banner_scroll { @@ -1724,14 +1498,18 @@ the examples provided here illustrate some CSS-only alternatives. } \endcode - Finally, - the demonstrations of \l{anim_demo-rotate}{rotate}, - \l{anim_demo-scale}{scale}, - and \l{anim_demo-skew}{skew} 2D transforms that opened this section - all rely on separate keyframe animations to slide in and manipulate a - series of panels. - Separate \c{-webkit-animation-delay} settings for each panel control - the sequence of each presentation. + Finally, the demonstrations of \l{anim_demo-rotate}{rotate}, + \l{anim_demo-scale}{scale}, and \l{anim_demo-skew}{skew} 2D transforms that + opened this section all rely on separate keyframe animations to slide in and + manipulate a series of panels. Separate \c{-webkit-animation-delay} settings + for each panel control the sequence of each presentation. */ +/*! +\example webkit/webkit-guide +\title QtWebKit Guide Files +This is a listing of \l{QtWebKit Guide} code. +\note The links to the HTML5 code is found within the guide. +*/ + diff --git a/doc/src/webkit/guide/guidelinks.qdoc b/doc/src/webkit/guide/guidelinks.qdoc index b1db999..379b182 100644 --- a/doc/src/webkit/guide/guidelinks.qdoc +++ b/doc/src/webkit/guide/guidelinks.qdoc @@ -43,12 +43,12 @@ */ /*! -\externalpage webkit-guide/css/storage.css +\externalpage webkit-webkit-guide-css-storage-css.html \title storage_css */ /*! -\externalpage webkit-guide/js/storage.js +\externalpage webkit-webkit-guide-js-storage-js.html \title storage_js */ @@ -213,232 +213,248 @@ */ /*! -\externalpage webkit-guide/css/anim_accord.css +\externalpage webkit-webkit-guide-css-anim-accord-css.html \title anim_accord_css */ /*! -\externalpage webkit-guide/js/anim_accord.js +\externalpage wwebkit-webkit-guide-js-anim-accord-js.html \title anim_accord_js */ /*! -\externalpage webkit-guide/css/anim_demo-rotate.css +\externalpage webkit-webkit-guide-css-anim-demo-rotate-css.html \title anim_demo-rotate_css */ /*! -\externalpage webkit-guide/css/anim_demo-scale.css +\externalpage webkit-webkit-guide-css-anim-demo-scale-css.html \title anim_demo-scale_css */ /*! -\externalpage webkit-guide/css/anim_demo-skew.css +\externalpage webkit-webkit-guide-css-anim-demo-skew-css.html \title anim_demo-skew_css */ /*! -\externalpage webkit-guide/css/anim_gallery.css +\externalpage webkit-webkit-guide-css-anim-gallery-css.html \title anim_gallery_css */ /*! -\externalpage webkit-guide/js/anim_gallery.js +\externalpage webkit-webkit-guide-js-anim-gallery-js.html \title anim_gallery_js */ /*! -\externalpage webkit-guide/css/anim_panel.css +\externalpage webkit-webkit-guide-css-anim-panel-css.html \title anim_panel_css */ /*! -\externalpage webkit-guide/js/anim_panel.js +\externalpage webkit-webkit-guide-js-anim-panel-js.html \title anim_panel_js */ /*! -\externalpage webkit-guide/css/anim_pulse.css +\externalpage webkit-webkit-guide-css-anim-pulse-css.html \title anim_pulse_css */ /*! 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-\externalpage webkit-guide/css/mqlayout_desktop.css +\externalpage webkit-webkit-guide-css-mqlayout-desktop-css.html \title mqlayout_desktop_css */ /*! -\externalpage webkit-guide/css/mqlayout_touch.css +\externalpage webkit-webkit-guide-css-mqlayout-touch-css.html \title mqlayout_touch_css */ /*! -\externalpage webkit-guide/css/mqlayout_mobile.css +\externalpage webkit-webkit-guide-css-mqlayout-mobile-css.html \title mqlayout_mobile_css */ /*! -\externalpage webkit-guide/css/mq_desktop.css +\externalpage webkit-webkit-guide-css-mq-desktop-css.html \title mq_desktop_css */ /*! -\externalpage webkit-guide/css/mq_touch.css +\externalpage webkit-webkit-guide-css-mq-touch-css.html \title mq_touch_css */ /*! -\externalpage webkit-guide/css/mq_mobile.css +\externalpage webkit-webkit-guide-css-mq-mobile-css.html \title mq_mobile_css */ /*! -\externalpage webkit-guide/css/mob_mediaquery.css +\externalpage webkit-webkit-guide-css-mob-mediaquery-css.html \title mob_mediaquery_css */ +/*! +\externalpage http://deviceatlas.com/ +\title DeviceAtlas +*/ + +/*! +\externalpage http://wurfl.sourceforge.net/ +\title WURFL +*/ + +/*! +\externalpage http://www.w3.org/TR/selectors-api/ +\title Selectors API + +*/ + diff --git a/doc/src/webkit/webkit.qdoc b/doc/src/webkit/webkit.qdoc index b0c9649..78d27fa 100644 --- a/doc/src/webkit/webkit.qdoc +++ b/doc/src/webkit/webkit.qdoc @@ -40,7 +40,7 @@ /*! \page qtwebkit-guide.html -\title Qt WebKit +\title QtWebKit Guide \section1 Introduction to QtWebKit |