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Diffstat (limited to 'examples/widgets/doc/src/styles.qdoc')
| -rw-r--r-- | examples/widgets/doc/src/styles.qdoc | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/examples/widgets/doc/src/styles.qdoc b/examples/widgets/doc/src/styles.qdoc index c654a9b958..279332878f 100644 --- a/examples/widgets/doc/src/styles.qdoc +++ b/examples/widgets/doc/src/styles.qdoc @@ -37,12 +37,15 @@ A style in Qt is a subclass of QStyle or of one of its subclasses. Styles perform drawing on behalf of widgets. Qt provides a whole range of predefined styles, either built into - the \l QtGui library or found in plugins. Custom styles are - usually created by subclassing one of Qt's existing style and - reimplementing a few virtual functions. + the \l QtWidgets library or found in plugins. Styles are usually + customized by subclassing QProxyStyle and reimplementing a few + virtual functions. While QProxyStyle provides a transparent way + to customize either a specific style or the appropriate platform's + default style, Qt also provides QCommonStyle as a convenient base + for full custom style implementations. In this example, the custom style is called \c NorwegianWoodStyle - and derives from QWindowsStyle. Its main features are the wooden + and derives from QProxyStyle. Its main features are the wooden textures used for filling most of the widgets and its round buttons and comboboxes. @@ -56,7 +59,7 @@ The example consists of the following classes: \list - \li \c NorwegianWoodStyle inherits from QWindowsStyle and implements + \li \c NorwegianWoodStyle inherits from QProxyStyle and implements the Norwegian Wood style. \li \c WidgetGallery is a \c QDialog subclass that shows the most common widgets and allows the user to switch style @@ -69,7 +72,7 @@ \snippet widgets/styles/norwegianwoodstyle.h 0 - The public functions are all declared in QStyle (QWindowsStyle's + The public functions are all declared in QStyle (QProxyStyle's grandparent class) and reimplemented here to override the Windows look and feel. The private functions are helper functions. @@ -154,7 +157,7 @@ \image styles-disabledwood.png The Norwegian Wood style with disabled widgets Let's move on to the other functions reimplemented from - QWindowsStyle: + QProxyStyle: \snippet widgets/styles/norwegianwoodstyle.cpp 3 \snippet widgets/styles/norwegianwoodstyle.cpp 4 @@ -201,13 +204,13 @@ \snippet widgets/styles/norwegianwoodstyle.cpp 10 The \l{QStyle::styleHint()}{styleHint()} function returns some - hints to widgets or to the base style (in our case QWindowsStyle) + hints to widgets or to the base style (in our case QProxyStyle) about how to draw the widgets. The Windows style returns \c true for the QStyle::SH_DitherDisabledText hint, resulting in a most unpleasing visual effect. We override this behavior and return \c false instead. We also return \c true for the QStyle::SH_EtchDisabledText hint, meaning that disabled text is - rendered with an embossed look (as QWindowsStyle does). + rendered with an embossed look. \snippet widgets/styles/norwegianwoodstyle.cpp 11 \snippet widgets/styles/norwegianwoodstyle.cpp 12 |