You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
169 lines
8.3 KiB
169 lines
8.3 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
|
<title>TQCanvasEllipse Class</title>
|
|
<style type="text/css"><!--
|
|
fn { margin-left: 1cm; text-indent: -1cm; }
|
|
a:link { color: #004faf; text-decoration: none }
|
|
a:visited { color: #672967; text-decoration: none }
|
|
body { background: #ffffff; color: black; }
|
|
--></style>
|
|
</head>
|
|
<body>
|
|
|
|
<table border="0" cellpadding="0" cellspacing="0" width="100%">
|
|
<tr bgcolor="#E5E5E5">
|
|
<td valign=center>
|
|
<a href="index.html">
|
|
<font color="#004faf">Home</font></a>
|
|
| <a href="classes.html">
|
|
<font color="#004faf">All Classes</font></a>
|
|
| <a href="mainclasses.html">
|
|
<font color="#004faf">Main Classes</font></a>
|
|
| <a href="annotated.html">
|
|
<font color="#004faf">Annotated</font></a>
|
|
| <a href="groups.html">
|
|
<font color="#004faf">Grouped Classes</font></a>
|
|
| <a href="functions.html">
|
|
<font color="#004faf">Functions</font></a>
|
|
</td>
|
|
<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQCanvasEllipse Class Reference<br><small>[<a href="canvas.html">canvas module</a>]</small></h1>
|
|
|
|
<p>The TQCanvasEllipse class provides an ellipse or ellipse segment on a TQCanvas.
|
|
<a href="#details">More...</a>
|
|
<p><tt>#include <<a href="tqcanvas-h.html">tqcanvas.h</a>></tt>
|
|
<p>Inherits <a href="tqcanvaspolygonalitem.html">TQCanvasPolygonalItem</a>.
|
|
<p><a href="tqcanvasellipse-members.html">List of all member functions.</a>
|
|
<h2>Public Members</h2>
|
|
<ul>
|
|
<li class=fn><a href="#TQCanvasEllipse"><b>TQCanvasEllipse</b></a> ( TQCanvas * canvas )</li>
|
|
<li class=fn><a href="#TQCanvasEllipse-2"><b>TQCanvasEllipse</b></a> ( int width, int height, TQCanvas * canvas )</li>
|
|
<li class=fn><a href="#TQCanvasEllipse-3"><b>TQCanvasEllipse</b></a> ( int width, int height, int startangle, int angle, TQCanvas * canvas )</li>
|
|
<li class=fn><a href="#~TQCanvasEllipse"><b>~TQCanvasEllipse</b></a> ()</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>void <a href="#setSize"><b>setSize</b></a> ( int width, int height )</li>
|
|
<li class=fn>void <a href="#setAngles"><b>setAngles</b></a> ( int start, int length )</li>
|
|
<li class=fn>int <a href="#angleStart"><b>angleStart</b></a> () const</li>
|
|
<li class=fn>int <a href="#angleLength"><b>angleLength</b></a> () const</li>
|
|
<li class=fn>virtual int <a href="#rtti"><b>rtti</b></a> () const</li>
|
|
</ul>
|
|
<h2>Protected Members</h2>
|
|
<ul>
|
|
<li class=fn>virtual void <a href="#drawShape"><b>drawShape</b></a> ( TQPainter & p )</li>
|
|
</ul>
|
|
<hr><a name="details"></a><h2>Detailed Description</h2>
|
|
|
|
|
|
The TQCanvasEllipse class provides an ellipse or ellipse segment on a <a href="tqcanvas.html">TQCanvas</a>.
|
|
|
|
<p>
|
|
|
|
|
|
<p> A canvas item that paints an ellipse or ellipse segment with a <a href="tqbrush.html">TQBrush</a>.
|
|
The ellipse's height, width, start angle and angle length can be set
|
|
at construction time. The size can be changed at runtime with
|
|
<a href="#setSize">setSize</a>(), and the angles can be changed (if you're displaying an
|
|
ellipse segment rather than a whole ellipse) with <a href="#setAngles">setAngles</a>().
|
|
<p> Note that angles are specified in 16ths of a degree.
|
|
<p> <a name="anglediagram"></a>
|
|
<center><img src="tqcanvasellipse.png" alt="Ellipse"></center>
|
|
<p> If a start angle and length angle are set then an ellipse segment
|
|
will be drawn. The start angle is the angle that goes from zero in a
|
|
counter-clockwise direction (shown in green in the diagram). The
|
|
length angle is the angle from the start angle in a
|
|
counter-clockwise direction (shown in blue in the diagram). The blue
|
|
segment is the segment of the ellipse that would be drawn. If no
|
|
start angle and length angle are specified the entire ellipse is
|
|
drawn.
|
|
<p> The ellipse can be drawn on a painter with <a href="#drawShape">drawShape</a>().
|
|
<p> Like any other canvas item ellipses can be moved with <a href="tqcanvasitem.html#move">move</a>() and
|
|
<a href="tqcanvasitem.html#moveBy">moveBy</a>(), or by setting coordinates with <a href="tqcanvasitem.html#setX">setX</a>(), <a href="tqcanvasitem.html#setY">setY</a>() and <a href="tqcanvasitem.html#setZ">setZ</a>().
|
|
<p> Note: TQCanvasEllipse does not use the pen.
|
|
<p>See also <a href="graphics.html">Graphics Classes</a> and <a href="images.html">Image Processing Classes</a>.
|
|
|
|
<hr><h2>Member Function Documentation</h2>
|
|
<h3 class=fn><a name="TQCanvasEllipse"></a>TQCanvasEllipse::TQCanvasEllipse ( <a href="tqcanvas.html">TQCanvas</a> * canvas )
|
|
</h3>
|
|
Constructs a 32x32 ellipse, centered at (0, 0) on <em>canvas</em>.
|
|
|
|
<h3 class=fn><a name="TQCanvasEllipse-2"></a>TQCanvasEllipse::TQCanvasEllipse ( int width, int height, <a href="tqcanvas.html">TQCanvas</a> * canvas )
|
|
</h3>
|
|
Constructs a <em>width</em> by <em>height</em> pixel ellipse, centered at
|
|
(0, 0) on <em>canvas</em>.
|
|
|
|
<h3 class=fn><a name="TQCanvasEllipse-3"></a>TQCanvasEllipse::TQCanvasEllipse ( int width, int height, int startangle, int angle, <a href="tqcanvas.html">TQCanvas</a> * canvas )
|
|
</h3>
|
|
Constructs a <em>width</em> by <em>height</em> pixel ellipse, centered at
|
|
(0, 0) on <em>canvas</em>. Only a segment of the ellipse is drawn,
|
|
starting at angle <em>startangle</em>, and extending for angle <em>angle</em>
|
|
(the angle length).
|
|
<p> Note that angles are specified in
|
|
<small><sup>1</sup>/<sub>16</sub></small>ths of a degree.
|
|
|
|
<h3 class=fn><a name="~TQCanvasEllipse"></a>TQCanvasEllipse::~TQCanvasEllipse ()
|
|
</h3>
|
|
Destroys the ellipse.
|
|
|
|
<h3 class=fn>int <a name="angleLength"></a>TQCanvasEllipse::angleLength () const
|
|
</h3>
|
|
|
|
<p> Returns the length angle (the extent of the ellipse segment) in
|
|
16ths of a degree. Initially this will be 360 * 16 (a complete
|
|
ellipse).
|
|
<p> <p>See also <a href="#setAngles">setAngles</a>() and <a href="#angleStart">angleStart</a>().
|
|
|
|
<h3 class=fn>int <a name="angleStart"></a>TQCanvasEllipse::angleStart () const
|
|
</h3>
|
|
|
|
<p> Returns the start angle in 16ths of a degree. Initially
|
|
this will be 0.
|
|
<p> <p>See also <a href="#setAngles">setAngles</a>() and <a href="#angleLength">angleLength</a>().
|
|
|
|
<h3 class=fn>void <a name="drawShape"></a>TQCanvasEllipse::drawShape ( <a href="tqpainter.html">TQPainter</a> & p )<tt> [virtual protected]</tt>
|
|
</h3>
|
|
Draws the ellipse, centered at <a href="tqcanvasitem.html#x">x</a>(), <a href="tqcanvasitem.html#y">y</a>() using the painter <em>p</em>.
|
|
<p> Note that TQCanvasEllipse does not support an outline (the pen is
|
|
always NoPen).
|
|
|
|
<p>Reimplemented from <a href="tqcanvaspolygonalitem.html#drawShape">TQCanvasPolygonalItem</a>.
|
|
<h3 class=fn>int <a name="height"></a>TQCanvasEllipse::height () const
|
|
</h3>
|
|
Returns the height of the ellipse.
|
|
|
|
<h3 class=fn>int <a name="rtti"></a>TQCanvasEllipse::rtti () const<tt> [virtual]</tt>
|
|
</h3>
|
|
Returns 6 (TQCanvasItem::Rtti_Ellipse).
|
|
<p> <p>See also <a href="tqcanvasitem.html#rtti">TQCanvasItem::rtti</a>().
|
|
|
|
<p>Reimplemented from <a href="tqcanvaspolygonalitem.html#rtti">TQCanvasPolygonalItem</a>.
|
|
<h3 class=fn>void <a name="setAngles"></a>TQCanvasEllipse::setAngles ( int start, int length )
|
|
</h3>
|
|
Sets the angles for the ellipse. The start angle is <em>start</em> and
|
|
the extent of the segment is <em>length</em> (the angle length) from the
|
|
<em>start</em>. The angles are specified in 16ths of a degree. By
|
|
default the ellipse will start at 0 and have an angle length of
|
|
360 * 16 (a complete ellipse).
|
|
<p> <p>See also <a href="#angleStart">angleStart</a>() and <a href="#angleLength">angleLength</a>().
|
|
|
|
<h3 class=fn>void <a name="setSize"></a>TQCanvasEllipse::setSize ( int width, int height )
|
|
</h3>
|
|
Sets the <em>width</em> and <em>height</em> of the ellipse.
|
|
|
|
<h3 class=fn>int <a name="width"></a>TQCanvasEllipse::width () const
|
|
</h3>
|
|
Returns the width of the ellipse.
|
|
|
|
<!-- eof -->
|
|
<hr><p>
|
|
This file is part of the <a href="index.html">TQt toolkit</a>.
|
|
Copyright © 1995-2007
|
|
<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
|
|
<table width=100% cellspacing=0 border=0><tr>
|
|
<td>Copyright © 2007
|
|
<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
|
|
<td align=right><div align=right>TQt 3.3.8</div>
|
|
</table></div></address></body>
|
|
</html>
|