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<li class="level1"><a href="#public-functions">Public Functions</a></li>
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<h1 class="title">QDecoration Class Reference</h1>
<!-- $$$QDecoration-brief -->
<p>The QDecoration class is a base class for window decorations in Qt for Embedded Linux <a href="#details">More...</a></p>
<!-- @@@QDecoration -->
<pre class="cpp"> <span class="preprocessor">#include <QDecoration></span></pre><p><b>Inherited by: </b><a href="qdecorationdefault.html">QDecorationDefault</a>.</p>
<ul>
<li><a href="qdecoration-members.html">List of all members, including inherited members</a></li>
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<a name="public-types"></a>
<h2>Public Types</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="qdecoration.html#DecorationRegion-enum">DecorationRegion</a></b> { All, Top, Bottom, Left, ..., None }</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="qdecoration.html#DecorationState-enum">DecorationState</a></b> { Normal, Disabled, Hover, Pressed }</td></tr>
</table>
<a name="public-functions"></a>
<h2>Public Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qdecoration.html#QDecoration">QDecoration</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual </td><td class="memItemRight bottomAlign"><b><a href="qdecoration.html#dtor.QDecoration">~QDecoration</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qdecoration.html#buildSysMenu">buildSysMenu</a></b> ( QWidget * <i>widget</i>, QMenu * <i>menu</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qdecoration.html#menuTriggered">menuTriggered</a></b> ( QWidget * <i>widget</i>, QAction * <i>action</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual bool </td><td class="memItemRight bottomAlign"><b><a href="qdecoration.html#paint">paint</a></b> ( QPainter * <i>painter</i>, const QWidget * <i>widget</i>, int <i>decorationRegion</i> = All, DecorationState <i>state</i> = Normal ) = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QRegion </td><td class="memItemRight bottomAlign"><b><a href="qdecoration.html#region">region</a></b> ( const QWidget * <i>widget</i>, const QRect & <i>rectangle</i>, int <i>decorationRegion</i> = All ) = 0</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QRegion </td><td class="memItemRight bottomAlign"><b><a href="qdecoration.html#region-2">region</a></b> ( const QWidget * <i>widget</i>, int <i>decorationRegion</i> = All )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual int </td><td class="memItemRight bottomAlign"><b><a href="qdecoration.html#regionAt">regionAt</a></b> ( const QWidget * <i>widget</i>, const QPoint & <i>point</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qdecoration.html#regionClicked">regionClicked</a></b> ( QWidget * <i>widget</i>, int <i>region</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual void </td><td class="memItemRight bottomAlign"><b><a href="qdecoration.html#regionDoubleClicked">regionDoubleClicked</a></b> ( QWidget * <i>widget</i>, int <i>region</i> )</td></tr>
</table>
<a name="static-public-members"></a>
<h2>Static Public Members</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qdecoration.html#startMove">startMove</a></b> ( QWidget * <i>widget</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qdecoration.html#startResize">startResize</a></b> ( QWidget * <i>widget</i> )</td></tr>
</table>
<a name="details"></a>
<!-- $$$QDecoration-description -->
<div class="descr">
<h2>Detailed Description</h2>
<p>The QDecoration class is a base class for window decorations in Qt for Embedded Linux</p>
<p>Note that this class is non-portable and only available in <a href="qt-embedded-linux.html">Qt for Embedded Linux</a>.</p>
<p><a href="qt-embedded-linux.html">Qt for Embedded Linux</a> provides window management of top level windows and several ready made decorations (i.e., <tt>Default</tt>, <tt>Styled</tt> and <tt>Windows</tt>). Custom decorations can be implemented by subclassing the QDecoration class and creating a decoration plugin (derived from <a href="qdecorationplugin.html">QDecorationPlugin</a>). The default implementation of the <a href="qdecorationfactory.html">QDecorationFactory</a> class will automatically detect the plugin, and load the decoration into the application at run-time using Qt's <a href="plugins-howto.html">plugin system</a>. To actually apply a decoration, use the <a href="qapplication.html#qwsSetDecoration">QApplication::qwsSetDecoration</a>() function.</p>
<p>When creating a custom decoration, implement the <a href="qdecoration.html#paint">paint</a>() function to paint the border and title decoration, and the <a href="qdecoration.html#region">region</a>() function to return the regions the decoration occupies. Reimplement the <a href="qdecoration.html#regionClicked">regionClicked</a>() and <a href="qdecoration.html#regionDoubleClicked">regionDoubleClicked</a>() functions to respond to mouse clicks (the default implementations responds to (single) clicks on items in a widget's system menu and double clicks on a widget's title).</p>
<p>QDecoration provides the <a href="qdecoration.html#DecorationRegion-enum">DecorationRegion</a> enum that describes the various regions of the window decoration, and the <a href="qdecoration.html#regionAt">regionAt</a>() function to determine the region containing a given point. The QDecoration class also provides the <a href="qdecoration.html#DecorationState-enum">DecorationState</a> enum describing the state of a given region, e.g. whether it is active or not.</p>
<p>In addition, it is possible to build the system menu for a given top level widget using the <a href="qdecoration.html#buildSysMenu">buildSysMenu</a>() function; whenever an action in this menu is triggered, the <a href="qdecoration.html#menuTriggered">menuTriggered</a>() function is called automatically.</p>
<p>Finally, the QDecoration class provides a couple of static functions, <a href="qdecoration.html#startMove">startMove</a>() and <a href="qdecoration.html#startResize">startResize</a>(), which start a move or resize action by making the appropriate decoration region active and grabbing the mouse input.</p>
</div>
<p><b>See also </b><a href="qdecorationfactory.html">QDecorationFactory</a>, <a href="qdecorationplugin.html">QDecorationPlugin</a>, and <a href="qt-embedded-architecture.html">Qt for Embedded Linux Architecture</a>.</p>
<!-- @@@QDecoration -->
<div class="types">
<h2>Member Type Documentation</h2>
<!-- $$$DecorationRegion$$$None$$$All$$$TopLeft$$$Top$$$TopRight$$$Left$$$Right$$$BottomLeft$$$Bottom$$$BottomRight$$$Borders$$$Menu$$$Title$$$Help$$$Minimize$$$Maximize$$$Normalize$$$Close$$$Move$$$Resize -->
<h3 class="fn"><a name="DecorationRegion-enum"></a>enum QDecoration::<span class="name">DecorationRegion</span></h3>
<p>This enum describes the various regions of the window decoration.</p>
<table class="valuelist"><tr valign="top" class="odd"><th class="tblConst">Constant</th><th class="tblval">Value</th><th class="tbldscr">Description</th></tr>
<tr><td class="topAlign"><tt>QDecoration::All</tt></td><td class="topAlign"><tt>0x7fffffff</tt></td><td class="topAlign">The entire region used by the window decoration.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::Top</tt></td><td class="topAlign"><tt>0x0000000002</tt></td><td class="topAlign">The top border used to vertically resize the window.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::Bottom</tt></td><td class="topAlign"><tt>0x0000000040</tt></td><td class="topAlign">The bottom border used to vertically resize the window.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::Left</tt></td><td class="topAlign"><tt>0x0000000008</tt></td><td class="topAlign">The left border used to horizontally resize the window.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::Right</tt></td><td class="topAlign"><tt>0x0000000010</tt></td><td class="topAlign">The right border used to horizontally resize the window.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::TopLeft</tt></td><td class="topAlign"><tt>0x0000000001</tt></td><td class="topAlign">The top-left corner of the window used to resize the window both horizontally and vertically.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::TopRight</tt></td><td class="topAlign"><tt>0x0000000004</tt></td><td class="topAlign">The top-right corner of the window used to resize the window both horizontally and vertically.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::BottomLeft</tt></td><td class="topAlign"><tt>0x0000000020</tt></td><td class="topAlign">The bottom-left corner of the window used to resize the window both horizontally and vertically.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::BottomRight</tt></td><td class="topAlign"><tt>0x0000000080</tt></td><td class="topAlign">The bottom-right corner of the window used to resize the window both horizontally and vertically.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::Borders</tt></td><td class="topAlign"><tt>0x00000000ff</tt></td><td class="topAlign">All the regions used to describe the window's borders.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::Title</tt></td><td class="topAlign"><tt>0x0000000200</tt></td><td class="topAlign">The region containing the window title, used to move the window by dragging with the mouse cursor.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::Close</tt></td><td class="topAlign"><tt>0x0000004000</tt></td><td class="topAlign">The region occupied by the close button. Clicking in this region closes the window.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::Minimize</tt></td><td class="topAlign"><tt>0x0000000800</tt></td><td class="topAlign">The region occupied by the minimize button. Clicking in this region minimizes the window.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::Maximize</tt></td><td class="topAlign"><tt>0x0000001000</tt></td><td class="topAlign">The region occupied by the maximize button. Clicking in this region maximizes the window.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::Normalize</tt></td><td class="topAlign"><tt>0x0000002000</tt></td><td class="topAlign">The region occupied by a button used to restore a window's normal size. Clicking in this region restores a maximized window to its previous size. The region used for this button is often also the Maximize region.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::Menu</tt></td><td class="topAlign"><tt>0x0000000100</tt></td><td class="topAlign">The region occupied by the window's menu button. Clicking in this region opens the window operations (system) menu.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::Help</tt></td><td class="topAlign"><tt>0x0000000400</tt></td><td class="topAlign">The region occupied by the window's help button. Clicking in this region causes the context-sensitive help function to be enabled.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::Resize</tt></td><td class="topAlign"><tt>0x0000010000</tt></td><td class="topAlign">The region used to resize the window.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::Move</tt></td><td class="topAlign"><tt>0x0000008000</tt></td><td class="topAlign">The region used to move the window.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::None</tt></td><td class="topAlign"><tt>0x0000000000</tt></td><td class="topAlign">No region.</td></tr>
</table>
<p><b>See also </b><a href="qdecoration.html#region">region</a>(), <a href="qdecoration.html#regionAt">regionAt</a>(), and <a href="qdecoration.html#DecorationState-enum">DecorationState</a>.</p>
<!-- @@@DecorationRegion -->
<!-- $$$DecorationState$$$Normal$$$Disabled$$$Hover$$$Pressed -->
<h3 class="fn"><a name="DecorationState-enum"></a>enum QDecoration::<span class="name">DecorationState</span></h3>
<p>This enum describes the various states of a decoration region.</p>
<table class="valuelist"><tr valign="top" class="odd"><th class="tblConst">Constant</th><th class="tblval">Value</th><th class="tbldscr">Description</th></tr>
<tr><td class="topAlign"><tt>QDecoration::Normal</tt></td><td class="topAlign"><tt>0x04</tt></td><td class="topAlign">The region is active</td></tr>
<tr><td class="topAlign"><tt>QDecoration::Disabled</tt></td><td class="topAlign"><tt>0x08</tt></td><td class="topAlign">The region is inactive.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::Hover</tt></td><td class="topAlign"><tt>0x01</tt></td><td class="topAlign">The cursor is hovering over the region.</td></tr>
<tr><td class="topAlign"><tt>QDecoration::Pressed</tt></td><td class="topAlign"><tt>0x02</tt></td><td class="topAlign">The region is pressed.</td></tr>
</table>
<p><b>See also </b><a href="qdecoration.html#paint">paint</a>() and <a href="qdecoration.html#DecorationRegion-enum">DecorationRegion</a>.</p>
<!-- @@@DecorationState -->
</div>
<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$QDecoration[overload1]$$$QDecoration -->
<h3 class="fn"><a name="QDecoration"></a>QDecoration::<span class="name">QDecoration</span> ()</h3>
<p>Constructs a decoration object.</p>
<!-- @@@QDecoration -->
<!-- $$$~QDecoration[overload1]$$$~QDecoration -->
<h3 class="fn"><a name="dtor.QDecoration"></a>QDecoration::<span class="name">~QDecoration</span> ()<tt> [virtual]</tt></h3>
<p>Destroys this decoration object.</p>
<!-- @@@~QDecoration -->
<!-- $$$buildSysMenu[overload1]$$$buildSysMenuQWidget*QMenu* -->
<h3 class="fn"><a name="buildSysMenu"></a><span class="type">void</span> QDecoration::<span class="name">buildSysMenu</span> ( <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>widget</i>, <span class="type"><a href="qmenu.html">QMenu</a></span> * <i>menu</i> )<tt> [virtual]</tt></h3>
<p>Builds the system menu for the given top level <i>widget</i>, adding <b>Restore</b>, <b>Move</b>, <b>Size</b>, <b>Minimize</b>, <b>Maximize</b> and <b>Close</b> actions to the given <i>menu</i>.</p>
<p><b>See also </b><a href="qdecoration.html#menuTriggered">menuTriggered</a>().</p>
<!-- @@@buildSysMenu -->
<!-- $$$menuTriggered[overload1]$$$menuTriggeredQWidget*QAction* -->
<h3 class="fn"><a name="menuTriggered"></a><span class="type">void</span> QDecoration::<span class="name">menuTriggered</span> ( <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>widget</i>, <span class="type"><a href="qaction.html">QAction</a></span> * <i>action</i> )</h3>
<p>This function is called whenever an action in a top level widget's menu is triggered, and simply calls the <a href="qdecoration.html#regionClicked">regionClicked</a>() function passing the <i>widget</i> and <i>action</i> parameters as arguments.</p>
<p><b>See also </b><a href="qdecoration.html#buildSysMenu">buildSysMenu</a>().</p>
<!-- @@@menuTriggered -->
<!-- $$$paint[overload1]$$$paintQPainter*constQWidget*intDecorationState -->
<h3 class="fn"><a name="paint"></a><span class="type">bool</span> QDecoration::<span class="name">paint</span> ( <span class="type"><a href="qpainter.html">QPainter</a></span> * <i>painter</i>, const <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>widget</i>, <span class="type">int</span> <i>decorationRegion</i> = All, <span class="type"><a href="qdecoration.html#DecorationState-enum">DecorationState</a></span> <i>state</i> = Normal )<tt> [pure virtual]</tt></h3>
<p>Implement this function to paint the border and title decoration for the specified top level <i>widget</i> using the given <i>painter</i> and decoration <i>state</i>. The specified <i>decorationRegion</i> is a bitmask of the values described by the <a href="qdecoration.html#DecorationRegion-enum">DecorationRegion</a> enum.</p>
<p>Note that <a href="qt-embedded-linux.html">Qt for Embedded Linux</a> expects this function to return true if any of the widget's decorations are repainted; otherwise it should return false.</p>
<p><b>See also </b><a href="qdecoration.html#region">region</a>().</p>
<!-- @@@paint -->
<!-- $$$region[overload1]$$$regionconstQWidget*constQRect&int -->
<h3 class="fn"><a name="region"></a><span class="type"><a href="qregion.html">QRegion</a></span> QDecoration::<span class="name">region</span> ( const <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>widget</i>, const <span class="type"><a href="qrect.html">QRect</a></span> & <i>rectangle</i>, <span class="type">int</span> <i>decorationRegion</i> = All )<tt> [pure virtual]</tt></h3>
<p>Implement this function to return the region specified by <i>decorationRegion</i> for the given top level <i>widget</i>.</p>
<p>The <i>rectangle</i> parameter specifies the rectangle the decoration is wrapped around. The <i>decorationRegion</i> is a bitmask of the values described by the <a href="qdecoration.html#DecorationRegion-enum">DecorationRegion</a> enum.</p>
<p><b>See also </b><a href="qdecoration.html#regionAt">regionAt</a>() and <a href="qdecoration.html#paint">paint</a>().</p>
<!-- @@@region -->
<!-- $$$region$$$regionconstQWidget*int -->
<h3 class="fn"><a name="region-2"></a><span class="type"><a href="qregion.html">QRegion</a></span> QDecoration::<span class="name">region</span> ( const <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>widget</i>, <span class="type">int</span> <i>decorationRegion</i> = All )</h3>
<p>This is an overloaded function.</p>
<!-- @@@region -->
<!-- $$$regionAt[overload1]$$$regionAtconstQWidget*constQPoint& -->
<h3 class="fn"><a name="regionAt"></a><span class="type">int</span> QDecoration::<span class="name">regionAt</span> ( const <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>widget</i>, const <span class="type"><a href="qpoint.html">QPoint</a></span> & <i>point</i> )<tt> [virtual]</tt></h3>
<p>Returns the type of the first region of the specified top level <i>widget</i> containing the given <i>point</i>.</p>
<p>The return value is one of the <a href="qdecoration.html#DecorationRegion-enum">DecorationRegion</a> enum's values. Use the <a href="qdecoration.html#region">region</a>() function to retrieve the actual region. If none of the widget's regions contain the point, this function returns <a href="qdecoration.html#DecorationRegion-enum">None</a>.</p>
<p><b>See also </b><a href="qdecoration.html#region">region</a>().</p>
<!-- @@@regionAt -->
<!-- $$$regionClicked[overload1]$$$regionClickedQWidget*int -->
<h3 class="fn"><a name="regionClicked"></a><span class="type">void</span> QDecoration::<span class="name">regionClicked</span> ( <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>widget</i>, <span class="type">int</span> <i>region</i> )<tt> [virtual]</tt></h3>
<p>Handles the event that the specified <i>region</i> in the given top level <i>widget</i> is activated by a single click (the <i>region</i> parameter is described using the <a href="qdecoration.html#DecorationRegion-enum">DecorationRegion</a> enum).</p>
<p>This function is called whenever a region in a top level widget is clicked; the default implementation responds to clicks on items in the system menu, performing the requested actions.</p>
<p><b>See also </b><a href="qdecoration.html#regionDoubleClicked">regionDoubleClicked</a>() and <a href="qdecoration.html#region">region</a>().</p>
<!-- @@@regionClicked -->
<!-- $$$regionDoubleClicked[overload1]$$$regionDoubleClickedQWidget*int -->
<h3 class="fn"><a name="regionDoubleClicked"></a><span class="type">void</span> QDecoration::<span class="name">regionDoubleClicked</span> ( <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>widget</i>, <span class="type">int</span> <i>region</i> )<tt> [virtual]</tt></h3>
<p>Handles the event that the specified <i>region</i> in the given top level <i>widget</i> is activated by a double click (the region parameter is described using the <a href="qdecoration.html#DecorationRegion-enum">DecorationRegion</a> enum).</p>
<p>This function is called whenever a region in a top level widget is double clicked; the default implementation responds to a double click on the widget's title, toggling its size between the maximum and its normal size.</p>
<p><b>See also </b><a href="qdecoration.html#regionClicked">regionClicked</a>() and <a href="qdecoration.html#region">region</a>().</p>
<!-- @@@regionDoubleClicked -->
<!-- $$$startMove[overload1]$$$startMoveQWidget* -->
<h3 class="fn"><a name="startMove"></a><span class="type">void</span> QDecoration::<span class="name">startMove</span> ( <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>widget</i> )<tt> [static]</tt></h3>
<p>Starts to move the given top level <i>widget</i> by making its <a href="qdecoration.html#DecorationRegion-enum">Title</a> region active and grabbing the mouse input.</p>
<p><b>See also </b><a href="qdecoration.html#startResize">startResize</a>().</p>
<!-- @@@startMove -->
<!-- $$$startResize[overload1]$$$startResizeQWidget* -->
<h3 class="fn"><a name="startResize"></a><span class="type">void</span> QDecoration::<span class="name">startResize</span> ( <span class="type"><a href="qwidget.html">QWidget</a></span> * <i>widget</i> )<tt> [static]</tt></h3>
<p>Starts to resize the given top level <i>widget</i> by making its <a href="qdecoration.html#DecorationRegion-enum">BottomRight</a> region active and grabbing the mouse input.</p>
<p><b>See also </b><a href="qdecoration.html#startMove">startMove</a>().</p>
<!-- @@@startResize -->
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