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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
<title>Qwt User's Guide: QwtPlotCanvas Class Reference</title>
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<div class="qindex"><a class="qindex" href="index.html">Main Page</a> | <a class="qindex" href="hierarchy.html">Class Hierarchy</a> | <a class="qindex" href="classes.html">Alphabetical List</a> | <a class="qindex" href="annotated.html">Class List</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="functions.html">Class Members</a> | <a class="qindex" href="globals.html">File Members</a> | <a class="qindex" href="pages.html">Related Pages</a></div>
<h1>QwtPlotCanvas Class Reference</h1><a href="class_qwt_plot_canvas-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>
Canvas of a <a class="el" href="class_qwt_plot.html">QwtPlot</a>.
<p>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_plot.html">QwtPlot</a> </dd></dl>
<p>
Definition at line <a class="el" href="qwt__plot__canvas_8h-source.html#l00029">29</a> of file <a class="el" href="qwt__plot__canvas_8h-source.html">qwt_plot_canvas.h</a>.<table border=0 cellpadding=0 cellspacing=0>
<tr><td></td></tr>
<tr><td colspan=2><br><h2>Public Types</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>enum </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#w3">FocusIndicator</a> { <br>
<b>NoFocusIndicator</b>,
<br>
<b>CanvasFocusIndicator</b>,
<br>
<b>ItemFocusIndicator</b>
<br>
}</td></tr>
<tr><td colspan=2><br><h2>Signals</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#l0">mousePressed</a> (const QMouseEvent &e)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#l1">mouseReleased</a> (const QMouseEvent &e)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#l2">mouseMoved</a> (const QMouseEvent &e)</td></tr>
<tr><td colspan=2><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#a0">setFocusIndicator</a> (<a class="el" href="class_qwt_plot_canvas.html#w3">FocusIndicator</a>)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="class_qwt_plot_canvas.html#w3">FocusIndicator</a> </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#a1">focusIndicator</a> () const</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#a2">setCacheMode</a> (bool on)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>bool </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#a3">cacheMode</a> () const</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>const QPixmap * </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#a4">cache</a> () const</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#a5">invalidateCache</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#a6">enableOutline</a> (bool tf)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>bool </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#a7">outlineEnabled</a> () const</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#a8">setOutlinePen</a> (const QPen &p)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>const QPen & </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#a9">outlinePen</a> () const</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#a10">setOutlineStyle</a> (Qwt::Shape os)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>Qwt::Shape </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#a11">outlineStyle</a> () const</td></tr>
<tr><td colspan=2><br><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top> </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#b0">QwtPlotCanvas</a> (<a class="el" href="class_qwt_plot.html">QwtPlot</a> *)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#b1">~QwtPlotCanvas</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>QPixmap * </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#b2">cache</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#b3">frameChanged</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#b4">drawContents</a> (QPainter *)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#b5">drawFocusIndicator</a> (QPainter *, const QRect &)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#b6">drawCanvas</a> (QPainter *painter=NULL)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#b7">mousePressEvent</a> (QMouseEvent *)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#b8">mouseReleaseEvent</a> (QMouseEvent *)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_plot_canvas.html#b9">mouseMoveEvent</a> (QMouseEvent *)</td></tr>
</table>
<hr><h2>Member Enumeration Documentation</h2>
<a class="anchor" name="w3" doxytag="QwtPlotCanvas::FocusIndicator" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="mdRow">
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<td class="md" nowrap valign="top"> enum <a class="el" href="class_qwt_plot_canvas.html#w3">QwtPlotCanvas::FocusIndicator</a> </td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Focus indicator.
<p>
<ul>
<li>NoFocusIndicator<br>
Dont paint a focus indicator</li><li>CanvasFocusIndicator<br>
The focus is related to the complete canvas. Paint the focus indicator using paintFocus()</li><li>ItemFocusIndicator<br>
The focus is related to an item (curve, point, ...) on the canvas. It is up to the application to display a focus indication using f.e. highlighting.</li></ul>
<p>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_plot_canvas.html#a0">setFocusIndicator()</a>, <a class="el" href="class_qwt_plot_canvas.html#a1">focusIndicator()</a>, paintFocus() </dd></dl>
Definition at line <a class="el" href="qwt__plot__canvas_8h-source.html#l00051">51</a> of file <a class="el" href="qwt__plot__canvas_8h-source.html">qwt_plot_canvas.h</a>.
<p>
Referenced by <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00122">focusIndicator()</a>. </td>
</tr>
</table>
<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="b0" doxytag="QwtPlotCanvas::QwtPlotCanvas" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
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<td class="md" nowrap valign="top"> QwtPlotCanvas::QwtPlotCanvas </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="class_qwt_plot.html">QwtPlot</a> * </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [protected]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Sets a cross cursor, and an invisible red outline.
<p>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00025">25</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>. </td>
</tr>
</table>
<a class="anchor" name="b1" doxytag="QwtPlotCanvas::~QwtPlotCanvas" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="mdRow">
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<td class="md" nowrap valign="top"> QwtPlotCanvas::~<a class="el" href="class_qwt_plot_canvas.html">QwtPlotCanvas</a> </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [protected, virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Destructor.
<p>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00042">42</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>. </td>
</tr>
</table>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="b2" doxytag="QwtPlotCanvas::cache" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top"> QPixmap * QwtPlotCanvas::cache </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [protected]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Return the paint cache, might be null.
<p>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00089">89</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>. </td>
</tr>
</table>
<a class="anchor" name="a4" doxytag="QwtPlotCanvas::cache" ></a><p>
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<td class="md" nowrap valign="top"> const QPixmap * QwtPlotCanvas::cache </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
</tr>
</table>
</td>
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</table>
<table cellspacing=5 cellpadding=0 border=0>
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<td>
</td>
<td>
<p>
Return the paint cache, might be null.
<p>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00095">95</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>.
<p>
Referenced by <a class="el" href="qwt__plot_8cpp-source.html#l00641">QwtPlot::drawCurve()</a>. </td>
</tr>
</table>
<a class="anchor" name="a3" doxytag="QwtPlotCanvas::cacheMode" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top"> bool QwtPlotCanvas::cacheMode </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
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<td>
</td>
<td>
<p>
<dl compact><dt><b>Returns:</b></dt><dd>Cache mode </dd></dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_plot_canvas.html#a2">setCacheMode</a> </dd></dl>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00083">83</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>.
<p>
Referenced by <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00174">drawCanvas()</a>, <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00139">drawContents()</a>, and <a class="el" href="qwt__plot_8cpp-source.html#l00641">QwtPlot::drawCurve()</a>. </td>
</tr>
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<a class="anchor" name="b6" doxytag="QwtPlotCanvas::drawCanvas" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top"> void QwtPlotCanvas::drawCanvas </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">QPainter * </td>
<td class="mdname1" valign="top" nowrap> <em>painter</em> = <code>NULL</code> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [protected]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Draw the the canvas<p>
Paints all plot items to the contentsRect(), using <a class="el" href="class_qwt_plot.html#b1">QwtPlot::drawCanvas</a> and updates the cache.<p>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_plot.html#b1">QwtPlot::drawCanvas</a>, <a class="el" href="class_qwt_plot_canvas.html#a2">setCacheMode()</a>, <a class="el" href="class_qwt_plot_canvas.html#a3">cacheMode()</a> </dd></dl>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00174">174</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>.
<p>
References <a class="el" href="qwt__paint__buffer_8h-source.html#l00044">QwtPaintBuffer::buffer()</a>, <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00083">cacheMode()</a>, <a class="el" href="qwt__paint__buffer_8cpp-source.html#l00084">QwtPaintBuffer::isEnabled()</a>, and <a class="el" href="qwt__paint__buffer_8cpp-source.html#l00058">QwtPaintBuffer::painter()</a>.
<p>
Referenced by <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00139">drawContents()</a>. </td>
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</table>
<a class="anchor" name="b4" doxytag="QwtPlotCanvas::drawContents" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> void QwtPlotCanvas::drawContents </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">QPainter * </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [protected, virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Redraw the canvas, and focus rect.
<p>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00139">139</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>.
<p>
References <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00083">cacheMode()</a>, <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00174">drawCanvas()</a>, <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00221">drawFocusIndicator()</a>, and <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00122">focusIndicator()</a>. </td>
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</table>
<a class="anchor" name="b5" doxytag="QwtPlotCanvas::drawFocusIndicator" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> void QwtPlotCanvas::drawFocusIndicator </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">QPainter * </td>
<td class="mdname" nowrap>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>const QRect & </td>
<td class="mdname" nowrap></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [protected, virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Draw the focus indication.
<p>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00221">221</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>.
<p>
Referenced by <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00139">drawContents()</a>. </td>
</tr>
</table>
<a class="anchor" name="a6" doxytag="QwtPlotCanvas::enableOutline" ></a><p>
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<td class="mdRow">
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<td class="md" nowrap valign="top"> void QwtPlotCanvas::enableOutline </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">bool </td>
<td class="mdname1" valign="top" nowrap> <em>tf</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Enables or disables outline drawing.
<p>
<dl compact><dt><b>Warning:</b></dt><dd>Outlining functionality is obsolete: use <a class="el" href="class_qwt_plot_picker.html">QwtPlotPicker</a> or <a class="el" href="class_qwt_plot_zoomer.html">QwtPlotZoomer</a>.</dd></dl>
When the outline feature is enabled, a shape will be drawn in the plotting region when the user presses or drags the mouse. It can be used to implement crosshairs, mark a selected region, etc. <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>tf</em> </td><td><code>TRUE</code> (enabled) or <code>FALSE</code> (disabled) </td></tr>
</table>
</dl>
<dl compact><dt><b>Warning:</b></dt><dd>An outline style has to be specified. </dd></dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_plot_canvas.html#a10">QwtPlotCanvas::setOutlineStyle()</a> </dd></dl>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00315">315</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>.
<p>
Referenced by <a class="el" href="qwt__plot_8cpp-source.html#l00814">QwtPlot::enableOutline()</a>. </td>
</tr>
</table>
<a class="anchor" name="a1" doxytag="QwtPlotCanvas::focusIndicator" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> <a class="el" href="class_qwt_plot_canvas.html#w3">QwtPlotCanvas::FocusIndicator</a> QwtPlotCanvas::focusIndicator </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
<dl compact><dt><b>Returns:</b></dt><dd>Focus indicator</dd></dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_plot_canvas.html#w3">FocusIndicator</a>, <a class="el" href="class_qwt_plot_canvas.html#a0">setFocusIndicator</a> </dd></dl>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00122">122</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>.
<p>
References <a class="el" href="qwt__plot__canvas_8h-source.html#l00051">FocusIndicator</a>.
<p>
Referenced by <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00139">drawContents()</a>. </td>
</tr>
</table>
<a class="anchor" name="b3" doxytag="QwtPlotCanvas::frameChanged" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> void QwtPlotCanvas::frameChanged </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [protected, virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Requires layout updates of the parent plot.
<p>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00128">128</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>. </td>
</tr>
</table>
<a class="anchor" name="a5" doxytag="QwtPlotCanvas::invalidateCache" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> void QwtPlotCanvas::invalidateCache </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Invalidate the internal paint cache.
<p>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00101">101</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>.
<p>
Referenced by <a class="el" href="qwt__plot_8cpp-source.html#l00368">QwtPlot::replot()</a>. </td>
</tr>
</table>
<a class="anchor" name="l2" doxytag="QwtPlotCanvas::mouseMoved" ></a><p>
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<td class="md" nowrap valign="top"> void QwtPlotCanvas::mouseMoved </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const QMouseEvent & </td>
<td class="mdname1" valign="top" nowrap> <em>e</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [signal]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
A signal which is emitted when the mouse is moved in the canvas.<p>
<dl compact><dt><b>Warning:</b></dt><dd>Outlining functionality is obsolete: use <a class="el" href="class_qwt_plot_picker.html">QwtPlotPicker</a> or <a class="el" href="class_qwt_plot_zoomer.html">QwtPlotZoomer</a>.</dd></dl>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>e</em> </td><td>Mouse event object </td></tr>
</table>
</dl>
<p>
Referenced by <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00284">mouseMoveEvent()</a>. </td>
</tr>
</table>
<a class="anchor" name="b9" doxytag="QwtPlotCanvas::mouseMoveEvent" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void QwtPlotCanvas::mouseMoveEvent </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">QMouseEvent * </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [protected, virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Mouse event handler.
<p>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00284">284</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>.
<p>
References <a class="el" href="class_qwt_plot_canvas.html#l2">mouseMoved()</a>. </td>
</tr>
</table>
<a class="anchor" name="l0" doxytag="QwtPlotCanvas::mousePressed" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void QwtPlotCanvas::mousePressed </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const QMouseEvent & </td>
<td class="mdname1" valign="top" nowrap> <em>e</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [signal]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
A signal which is emitted when the mouse is pressed in the canvas.<p>
<dl compact><dt><b>Warning:</b></dt><dd>Outlining functionality is obsolete: use <a class="el" href="class_qwt_plot_picker.html">QwtPlotPicker</a> or <a class="el" href="class_qwt_plot_zoomer.html">QwtPlotZoomer</a>.</dd></dl>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>e</em> </td><td>Mouse event object </td></tr>
</table>
</dl>
<p>
Referenced by <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00234">mousePressEvent()</a>. </td>
</tr>
</table>
<a class="anchor" name="b7" doxytag="QwtPlotCanvas::mousePressEvent" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void QwtPlotCanvas::mousePressEvent </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">QMouseEvent * </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [protected, virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Mouse event handler.
<p>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00234">234</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>.
<p>
References <a class="el" href="class_qwt_plot_canvas.html#l0">mousePressed()</a>. </td>
</tr>
</table>
<a class="anchor" name="l1" doxytag="QwtPlotCanvas::mouseReleased" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="mdRow">
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<tr>
<td class="md" nowrap valign="top"> void QwtPlotCanvas::mouseReleased </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const QMouseEvent & </td>
<td class="mdname1" valign="top" nowrap> <em>e</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [signal]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
A signal which is emitted when a mouse button has been released in the canvas.<p>
<dl compact><dt><b>Warning:</b></dt><dd>Outlining functionality is obsolete: use <a class="el" href="class_qwt_plot_picker.html">QwtPlotPicker</a> or <a class="el" href="class_qwt_plot_zoomer.html">QwtPlotZoomer</a>.</dd></dl>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>e</em> </td><td>Mouse event object </td></tr>
</table>
</dl>
<p>
Referenced by <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00266">mouseReleaseEvent()</a>. </td>
</tr>
</table>
<a class="anchor" name="b8" doxytag="QwtPlotCanvas::mouseReleaseEvent" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void QwtPlotCanvas::mouseReleaseEvent </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">QMouseEvent * </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [protected, virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Mouse event handler.
<p>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00266">266</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>.
<p>
References <a class="el" href="class_qwt_plot_canvas.html#l1">mouseReleased()</a>. </td>
</tr>
</table>
<a class="anchor" name="a7" doxytag="QwtPlotCanvas::outlineEnabled" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> bool QwtPlotCanvas::outlineEnabled </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
<dl compact><dt><b>Returns:</b></dt><dd><code>TRUE</code> if the outline feature is enabled</dd></dl>
<dl compact><dt><b>Warning:</b></dt><dd>Outlining functionality is obsolete: use <a class="el" href="class_qwt_plot_picker.html">QwtPlotPicker</a> or <a class="el" href="class_qwt_plot_zoomer.html">QwtPlotZoomer</a>.</dd></dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_plot_canvas.html#a6">QwtPlotCanvas::enableOutline</a> </dd></dl>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00340">340</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>.
<p>
Referenced by <a class="el" href="qwt__plot_8cpp-source.html#l00876">QwtPlot::outlineEnabled()</a>. </td>
</tr>
</table>
<a class="anchor" name="a9" doxytag="QwtPlotCanvas::outlinePen" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> const QPen & QwtPlotCanvas::outlinePen </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
<dl compact><dt><b>Returns:</b></dt><dd>the pen used to draw outlines</dd></dl>
<dl compact><dt><b>Warning:</b></dt><dd>Outlining functionality is obsolete: use <a class="el" href="class_qwt_plot_picker.html">QwtPlotPicker</a> or <a class="el" href="class_qwt_plot_zoomer.html">QwtPlotZoomer</a>.</dd></dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_plot_canvas.html#a8">QwtPlotCanvas::setOutlinePen</a> </dd></dl>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00433">433</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>.
<p>
Referenced by <a class="el" href="qwt__plot_8cpp-source.html#l00887">QwtPlot::outlinePen()</a>. </td>
</tr>
</table>
<a class="anchor" name="a11" doxytag="QwtPlotCanvas::outlineStyle" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> Qwt::Shape QwtPlotCanvas::outlineStyle </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
<dl compact><dt><b>Returns:</b></dt><dd>the outline style</dd></dl>
<dl compact><dt><b>Warning:</b></dt><dd>Outlining functionality is obsolete: use <a class="el" href="class_qwt_plot_picker.html">QwtPlotPicker</a> or <a class="el" href="class_qwt_plot_zoomer.html">QwtPlotZoomer</a>.</dd></dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_plot_canvas.html#a10">QwtPlotCanvas::setOutlineStyle()</a> </dd></dl>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00404">404</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>.
<p>
Referenced by <a class="el" href="qwt__plot_8cpp-source.html#l00900">QwtPlot::outlineStyle()</a>. </td>
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<a class="anchor" name="a2" doxytag="QwtPlotCanvas::setCacheMode" ></a><p>
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<td class="mdRow">
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<td class="md" nowrap valign="top"> void QwtPlotCanvas::setCacheMode </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">bool </td>
<td class="mdname1" valign="top" nowrap> <em>on</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
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</td>
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<table cellspacing=5 cellpadding=0 border=0>
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<td>
</td>
<td>
<p>
En/Disable caching.
<p>
When cache mode is enabled the canvas contents are copied to a pixmap that is used for trivial repaints. Such repaints happen when a plot gets unhidden, deiconified or changes the focus.<p>
The win of caching depends on the costs of <a class="el" href="class_qwt_plot.html#b1">QwtPlot::drawCanvas</a>. In case of plots with huge data it might be significant. The price of caching is wasting memory for the cache, what is a pixmap in size of contentsRect(). In case of <a class="el" href="class_qwt_paint_buffer.html#e1">QwtPaintBuffer::isEnabled()</a> updating the cache produces no performance overhead as it reuses the temporary paintbuffer of the double buffering. Otherwise canvas updates have to painted twice to widget and cache.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>on</em> </td><td>Enable caching, when TRUE</td></tr>
</table>
</dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_plot_canvas.html#a3">cacheMode()</a>, <a class="el" href="class_qwt_plot_canvas.html#b6">drawCanvas()</a>, <a class="el" href="class_qwt_plot_canvas.html#b4">drawContents()</a>, <a class="el" href="class_qwt_plot_canvas.html#b2">cache()</a> </dd></dl>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00066">66</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>. </td>
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<a class="anchor" name="a0" doxytag="QwtPlotCanvas::setFocusIndicator" ></a><p>
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<td class="md" nowrap valign="top"> void QwtPlotCanvas::setFocusIndicator </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="class_qwt_plot_canvas.html#w3">FocusIndicator</a> </td>
<td class="mdname1" valign="top" nowrap> <em>focusIndicator</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
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</table>
<table cellspacing=5 cellpadding=0 border=0>
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<td>
</td>
<td>
<p>
Set the focus indicator<p>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_plot_canvas.html#w3">FocusIndicator</a>, <a class="el" href="class_qwt_plot_canvas.html#a1">focusIndicator</a> </dd></dl>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00112">112</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>. </td>
</tr>
</table>
<a class="anchor" name="a8" doxytag="QwtPlotCanvas::setOutlinePen" ></a><p>
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<td class="md" nowrap valign="top"> void QwtPlotCanvas::setOutlinePen </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const QPen & </td>
<td class="mdname1" valign="top" nowrap> <em>pen</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Specify a pen for the outline.
<p>
<dl compact><dt><b>Warning:</b></dt><dd>Outlining functionality is obsolete: use <a class="el" href="class_qwt_plot_picker.html">QwtPlotPicker</a> or <a class="el" href="class_qwt_plot_zoomer.html">QwtPlotZoomer</a>.</dd></dl>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>pen</em> </td><td>new pen </td></tr>
</table>
</dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_plot_canvas.html#a9">QwtPlotCanvas::outlinePen</a> </dd></dl>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00419">419</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>.
<p>
Referenced by <a class="el" href="qwt__plot_8cpp-source.html#l00865">QwtPlot::setOutlinePen()</a>. </td>
</tr>
</table>
<a class="anchor" name="a10" doxytag="QwtPlotCanvas::setOutlineStyle" ></a><p>
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<td class="md" nowrap valign="top"> void QwtPlotCanvas::setOutlineStyle </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">Qwt::Shape </td>
<td class="mdname1" valign="top" nowrap> <em>os</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Specify the style of the outline.
<p>
<dl compact><dt><b>Warning:</b></dt><dd>Outlining functionality is obsolete: use <a class="el" href="class_qwt_plot_picker.html">QwtPlotPicker</a> or <a class="el" href="class_qwt_plot_zoomer.html">QwtPlotZoomer</a>.</dd></dl>
The outline style determines which kind of shape is drawn in the plotting region when the user presses a mouse button or drags the mouse. Valid Styles are: <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>os</em> </td><td>Outline Style. Valid values are: <code>Qwt::HLine</code>, <code>Qwt::VLine</code>, <code>Qwt::Cross</code>, <code>Qwt::Rect</code>, <code>Qwt::Ellipse</code> <dl>
<dt>Qwt::Cros </dt>
<dd>Cross hairs are drawn across the plotting area when the user presses a mouse button. The lines intersect at the point where the mouse was pressed and move with the mouse pointer. </dd>
<dt>Qwt::HLine, Qwt::VLine </dt>
<dd>A horizontal or vertical line appears when the user presses a mouse button. This is useful for moving line markers. </dd>
<dt>Qwt::Rect </dt>
<dd>A rectangle is displayed when the user drags the mouse. One corner is fixed at the point where the mouse was pressed, and the opposite corner moves with the mouse pointer. This can be used for selecting regions. </dd>
<dt>Qwt::Ellipse </dt>
<dd>Similar to Qwt::Rect, but with an ellipse inside a bounding rectangle. </dd>
</dl>
</td></tr>
</table>
</dl>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_plot_canvas.html#a6">QwtPlotCanvas::enableOutline()</a>, <a class="el" href="class_qwt_plot_canvas.html#a11">QwtPlotCanvas::outlineStyle()</a> </dd></dl>
Definition at line <a class="el" href="qwt__plot__canvas_8cpp-source.html#l00379">379</a> of file <a class="el" href="qwt__plot__canvas_8cpp-source.html">qwt_plot_canvas.cpp</a>.
<p>
Referenced by <a class="el" href="qwt__plot_8cpp-source.html#l00852">QwtPlot::setOutlineStyle()</a>. </td>
</tr>
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