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author | Ian Walters <ian.walters@nokia.com> | 2009-05-14 04:24:59 (GMT) |
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committer | Ian Walters <ian.walters@nokia.com> | 2009-05-14 04:24:59 (GMT) |
commit | a8e4628a1f74b52a61b11b4b1fcc8ccdd4002a46 (patch) | |
tree | bac5b6e440ac7e5c7f9fe1eee53a75fb44a7e9dd /doc | |
parent | df69dfe0ec549a259ed78cf48dff898d8a044c41 (diff) | |
parent | 9820412d2551b655fec24ffde7b2a56e3ad168ea (diff) | |
download | Qt-a8e4628a1f74b52a61b11b4b1fcc8ccdd4002a46.zip Qt-a8e4628a1f74b52a61b11b4b1fcc8ccdd4002a46.tar.gz Qt-a8e4628a1f74b52a61b11b4b1fcc8ccdd4002a46.tar.bz2 |
Merge branch 'master' of ../master into contiguouscache
Diffstat (limited to 'doc')
-rw-r--r-- | doc/src/examples/fancybrowser.qdoc | 103 | ||||
-rw-r--r-- | doc/src/qset.qdoc | 2 | ||||
-rw-r--r-- | doc/src/snippets/sqldatabase/sqldatabase.cpp | 2 |
3 files changed, 102 insertions, 5 deletions
diff --git a/doc/src/examples/fancybrowser.qdoc b/doc/src/examples/fancybrowser.qdoc index 9001c20..631aff9 100644 --- a/doc/src/examples/fancybrowser.qdoc +++ b/doc/src/examples/fancybrowser.qdoc @@ -40,12 +40,109 @@ ****************************************************************************/ /*! - \example webkit/fancybrowser - \title Fancy Browser Example + \example webkit/fancybrowser + \title Fancy Browser Example The Fancy Browser example shows how to use jQuery with QtWebKit to - make a web browser with some special effects and content manipulation. + create a web browser with special effects and content + manipulation. \image fancybrowser-example.png + The application makes use of QWebFrame::evaluateJavaScript to + evaluate the jQuery JavaScript code. A QMainWindow with a QWebView + as central widget builds up the browser itself. + + \section1 MainWindow Class Definition + + The \c MainWindow class inherits QMainWindow. It implements a number of + slots to perform actions on both the application and on the web content. + + \snippet examples/webkit/fancybrowser/mainwindow.h 1 + + We also declare a QString that contains the jQuery, a QWebView + that displays the web content, and a QLineEdit that acts as the + address bar. + + \section1 MainWindow Class Implementation + + We start by implementing the constructor. + + \snippet examples/webkit/fancybrowser/mainwindow.cpp 1 + + The first part of the constructor sets the value of \c progress to + 0. This value will be used later in the code to visualize the + loading of a webpage. + + Next, the jQuery library is loaded using a QFile and reading the file + content. The jQuery library is a JavaScript library that provides different + functions for manipulating HTML. + + \snippet examples/webkit/fancybrowser/mainwindow.cpp 2 + + The second part of the constructor creates a QWebView and connects + slots to the views signals. Furthermore, we create a QLineEdit as + the browsers address bar. We then set the horizontal QSizePolicy + to fill the available area in the browser at all times. We add the + QLineEdit to a QToolbar together with a set of navigation actions + from QWebView::pageAction. + + \snippet examples/webkit/fancybrowser/mainwindow.cpp 3 + + The third and last part of the constructor implements two QMenus and assigns + a set of actions to them. The last line sets the QWebView as the central + widget in the QMainWindow. + + \snippet examples/webkit/fancybrowser/mainwindow.cpp 4 + + When the page is loaded, \c adjustLocation() updates the address + bar; \c adjustLocation() is triggered by the \c loadFinished() + signal in QWebView. In \c changeLocation() we create a QUrl + object, and then use it to load the page into the QWebView. When + the new web page has finished loading, \c adjustLocation() will be + run once more to update the address bar. + + \snippet examples/webkit/fancybrowser/mainwindow.cpp 5 + + \c adjustTitle() sets the window title and displays the loading + progress. This slot is triggered by the \c titleChanged() signal + in QWebView. + + \snippet examples/webkit/fancybrowser/mainwindow.cpp 6 + + When a web page has loaded, \c finishLoading() is triggered by the + \c loadFinished() signal in QWebView. \c finishLoading() then updates the + progress in the title bar and calls \c evaluateJavaScript() to evaluate the + jQuery library. This evaluates the JavaScript against the current web page. + What that means is that the JavaScript can be viewed as part of the content + loaded into the QWebView, and therefore needs to be loaded every time a new + page is loaded. Once the jQuery library is loaded, we can start executing + the different jQuery functions in the browser. + + \snippet examples/webkit/fancybrowser/mainwindow.cpp 7 + + The first jQuery-based function, \c highlightAllLinks(), is designed to + highlight all links in the current webpage. The JavaScript code looks + for web elements named \e {a}, which is the tag for a hyperlink. + For each such element, the background color is set to be yellow by + using CSS. + + \snippet examples/webkit/fancybrowser/mainwindow.cpp 8 + + The \c rotateImages() function rotates the images on the current + web page. Webkit supports CSS transforms and this JavaScript code + looks up all \e {img} elements and rotates the images 180 degrees + and then back again. + + \snippet examples/webkit/fancybrowser/mainwindow.cpp 9 + + The remaining four methods remove different elements from the current web + page. \c removeGifImages() removes all Gif images on the page by looking up + the \e {src} attribute of all the elements on the web page. Any element with + a \e {gif} file as its source is removed. \c removeInlineFrames() removes all + \e {iframe} or inline elements. \c removeObjectElements() removes all + \e {object} elements, and \c removeEmbeddedElements() removes any elements + such as plugins embedded on the page using the \e {embed} tag. + */ + diff --git a/doc/src/qset.qdoc b/doc/src/qset.qdoc index 9795123..2d12661 100644 --- a/doc/src/qset.qdoc +++ b/doc/src/qset.qdoc @@ -447,7 +447,7 @@ \fn QSet::const_iterator QSet::insert(const T &value) Inserts item \a value into the set, if \a value isn't already - in the set, and returns an iterator positioned at the inserted + in the set, and returns an iterator pointing at the inserted item. \sa operator<<(), remove(), contains() diff --git a/doc/src/snippets/sqldatabase/sqldatabase.cpp b/doc/src/snippets/sqldatabase/sqldatabase.cpp index ae176ac..06afa0c 100644 --- a/doc/src/snippets/sqldatabase/sqldatabase.cpp +++ b/doc/src/snippets/sqldatabase/sqldatabase.cpp @@ -524,7 +524,7 @@ protected: bool fetchLast() { return false; } int size() { return 0; } int numRowsAffected() { return 0; } - QSqlRecord record() { return QSqlRecord(); } + QSqlRecord record() const { return QSqlRecord(); } }; //! 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