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-<title>TQDirectPainter Class</title>
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-<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQDirectPainter Class Reference</h1>
-
-<p>The TQDirectPainter class provides direct access to the video hardware.
-<a href="#details">More...</a>
-<p><tt>#include &lt;<a href="qdirectpainter_qws-h.html">qdirectpainter_qws.h</a>&gt;</tt>
-<p>Inherits <a href="ntqpainter.html">TQPainter</a>.
-<p><a href="qdirectpainter-members.html">List of all member functions.</a>
-<h2>Public Members</h2>
-<ul>
-<li class=fn><a href="#TQDirectPainter"><b>TQDirectPainter</b></a> ( const&nbsp;TQWidget&nbsp;*&nbsp;w )</li>
-<li class=fn><a href="#~TQDirectPainter"><b>~TQDirectPainter</b></a> ()</li>
-<li class=fn>uchar * <a href="#frameBuffer"><b>frameBuffer</b></a> ()</li>
-<li class=fn>int <a href="#lineStep"><b>lineStep</b></a> ()</li>
-<li class=fn>int <a href="#transformOrientation"><b>transformOrientation</b></a> ()</li>
-<li class=fn>int <a href="#numRects"><b>numRects</b></a> () const</li>
-<li class=fn>const TQRect &amp; <a href="#rect"><b>rect</b></a> ( int&nbsp;i ) const</li>
-<li class=fn>TQRegion <a href="#region"><b>region</b></a> () const</li>
-<li class=fn>int <a href="#depth"><b>depth</b></a> () const</li>
-<li class=fn>int <a href="#width"><b>width</b></a> () const</li>
-<li class=fn>int <a href="#height"><b>height</b></a> () const</li>
-<li class=fn>int <a href="#xOffset"><b>xOffset</b></a> () const</li>
-<li class=fn>int <a href="#yOffset"><b>yOffset</b></a> () const</li>
-<li class=fn>TQPoint <a href="#offset"><b>offset</b></a> () const</li>
-<li class=fn>TQSize <a href="#size"><b>size</b></a> () const</li>
-<li class=fn>void <a href="#setAreaChanged"><b>setAreaChanged</b></a> ( const&nbsp;TQRect&nbsp;&amp;&nbsp;r )</li>
-</ul>
-<hr><a name="details"></a><h2>Detailed Description</h2>
-
-
-The TQDirectPainter class provides direct access to the video hardware.
-<p>
-<p> Only available in TQt/Embedded.
-<p> When the hardware is known and well defined, as is often the case
-with software for embedded devices, it may be useful to manipulate
-the underlying video hardware directly. In order to do this in a
-way that is co-operative with other applications, you must lock
-the video hardware for exclusive use for a small time while you
-write to it, and you must know the clipping region which is
-allocated to a widget.
-<p> TQDirectPainter provides this functionality.
-<p> In the simplest case, you make a TQDirectPainter on a widget and
-then, observing the clip region, perform some platform-specific
-operation. For example:
-<pre>
- void MyWidget::updatePlatformGraphics()
- {
- TQDirectPainter dp( this );
- for ( int i = 0; i &lt; dp.numRects; i++ ) {
- const <a href="ntqrect.html">TQRect</a>&amp; clip = dp.<a href="#rect">rect</a>(i);
- ... // platform specific operation
- }
- }
- </pre>
-
-<p> The platform-specific code has access to the display, but should
-only modify graphics in the rectangles specified by <a href="#numRects">numRects</a>() and
-<a href="#rect">rect</a>(). Note that these rectangles are relative to the entire
-display.
-<p> The <a href="#offset">offset</a>() function returns the position of the widget relative
-to the entire display, allowing you to offset platform-specific
-operations appropriately. The <a href="#xOffset">xOffset</a>() and <a href="#yOffset">yOffset</a>() functions
-merely return the component values of offset().
-<p> For simple frame-buffer hardware, the <a href="#frameBuffer">frameBuffer</a>(), <a href="#lineStep">lineStep</a>(),
-and <a href="#depth">depth</a>() functions provide basic access, though some hardware
-configurations are insufficiently specified by such simple
-parameters.
-<p> Note that while a TQDirectPainter exists, the entire TQt/Embedded
-window system is locked from use by other applications. Always
-construct the TQDirectPainter as an auto (stack) variable, and be
-very careful to write robust and stable code within its scope.
-<p>See also <a href="graphics.html">Graphics Classes</a>.
-
-<hr><h2>Member Function Documentation</h2>
-<h3 class=fn><a name="TQDirectPainter"></a>TQDirectPainter::TQDirectPainter ( const&nbsp;<a href="tqwidget.html">TQWidget</a>&nbsp;*&nbsp;w )
-</h3>
-Construct a direct painter on <em>w</em>. The display is locked and the
-mouse cursor is hidden if it is above <em>w</em>.
-
-<h3 class=fn><a name="~TQDirectPainter"></a>TQDirectPainter::~TQDirectPainter ()
-</h3>
-Destroys the direct painter. The mouse cursor is revealed if
-necessary and the display is unlocked.
-
-<h3 class=fn>int <a name="depth"></a>TQDirectPainter::depth () const
-</h3>
-Returns the bit-depth of the display.
-
-<h3 class=fn>uchar * <a name="frameBuffer"></a>TQDirectPainter::frameBuffer ()
-</h3>
-Returns a pointer to the framebuffer memory if available.
-
-<h3 class=fn>int <a name="height"></a>TQDirectPainter::height () const
-</h3>
-Returns the height of the widget drawn upon.
-
-<h3 class=fn>int <a name="lineStep"></a>TQDirectPainter::lineStep ()
-</h3>
-Returns the spacing in bytes from one framebuffer line to the
-next.
-
-<h3 class=fn>int <a name="numRects"></a>TQDirectPainter::numRects () const
-</h3>
-Returns the number of rectangles in the drawable region.
-<p> <p>See also <a href="#rect">rect</a>() and <a href="#region">region</a>().
-
-<h3 class=fn><a href="ntqpoint.html">TQPoint</a> <a name="offset"></a>TQDirectPainter::offset () const
-</h3>
-Returns the position of the widget relative to the entire display.
-
-<h3 class=fn>const&nbsp;<a href="ntqrect.html">TQRect</a>&nbsp;&amp; <a name="rect"></a>TQDirectPainter::rect ( int&nbsp;i ) const
-</h3>
-Returns a reference to rectangle <em>i</em> of the drawable region.
-Valid values for <em>i</em> are 0..<a href="#numRects">numRects</a>()-1.
-<p> <p>See also <a href="#region">region</a>().
-
-<h3 class=fn><a href="ntqregion.html">TQRegion</a> <a name="region"></a>TQDirectPainter::region () const
-</h3>
-Returns the region of the framebuffer which represents the exposed
-area of the widget being painted on. Note that this may be a sub-area of
-the clip region, because of child widgets and overlapping cousin widgets.
-<p> <p>See also <a href="#numRects">numRects</a>() and <a href="#rect">rect</a>().
-
-<h3 class=fn>void <a name="setAreaChanged"></a>TQDirectPainter::setAreaChanged ( const&nbsp;<a href="ntqrect.html">TQRect</a>&nbsp;&amp;&nbsp;r )
-</h3>
-Sets the area changed by the transaction to <em>r</em>. By default, the
-entire widget is assumed to have changed. The area changed is only
-used by some graphics drivers, so often calling this function for
-a smaller area will make no difference to performance.
-
-<h3 class=fn><a href="ntqsize.html">TQSize</a> <a name="size"></a>TQDirectPainter::size () const
-</h3>
-Returns the size of the widget drawn upon.
-<p> <p>See also <a href="#width">width</a>() and <a href="#height">height</a>().
-
-<h3 class=fn>int <a name="transformOrientation"></a>TQDirectPainter::transformOrientation ()
-</h3>
-Returns a number that signifies the orientation of the
-framebuffer.
-<center><table cellpadding="4" cellspacing="2" border="0">
-<tr bgcolor="#f0f0f0"> <td valign="top" colspan="1" rowspan="1"> 0 <td valign="top" colspan="1" rowspan="1"> no rotation
-<tr bgcolor="#d0d0d0"> <td valign="top" colspan="1" rowspan="1"> 1 <td valign="top" colspan="1" rowspan="1"> 90 degrees rotation
-<tr bgcolor="#f0f0f0"> <td valign="top" colspan="1" rowspan="1"> 2 <td valign="top" colspan="1" rowspan="1"> 180 degrees rotation
-<tr bgcolor="#d0d0d0"> <td valign="top" colspan="1" rowspan="1"> 3 <td valign="top" colspan="1" rowspan="1"> 270 degrees rotation
-</table></center>
-
-<h3 class=fn>int <a name="width"></a>TQDirectPainter::width () const
-</h3>
-Returns the width of the widget drawn upon.
-
-<h3 class=fn>int <a name="xOffset"></a>TQDirectPainter::xOffset () const
-</h3>
-Returns the X-position of the widget relative to the entire
-display.
-
-<h3 class=fn>int <a name="yOffset"></a>TQDirectPainter::yOffset () const
-</h3>
-Returns the Y-position of the widget relative to the entire
-display.
-
-<!-- eof -->
-<hr><p>
-This file is part of the <a href="index.html">TQt toolkit</a>.
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-<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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-<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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