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| author | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-11-08 12:31:36 -0600 |
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| committer | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-11-08 12:31:36 -0600 |
| commit | d796c9dd933ab96ec83b9a634feedd5d32e1ba3f (patch) | |
| tree | 6e3dcca4f77e20ec8966c666aac7c35bd4704053 /doc/html/canvas.html | |
| download | tqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.tar.gz tqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.zip | |
Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731
Diffstat (limited to 'doc/html/canvas.html')
| -rw-r--r-- | doc/html/canvas.html | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/doc/html/canvas.html b/doc/html/canvas.html new file mode 100644 index 000000000..a005896a3 --- /dev/null +++ b/doc/html/canvas.html @@ -0,0 +1,82 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> +<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/doc/canvas.doc:36 --> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>Canvas Module</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>Canvas Module</h1> + + + +<p> +<p> The canvas module provides a highly optimized 2D graphic area called +<a href="qcanvas.html">TQCanvas</a>. The canvas can contain an arbitrary number of <a href="qcanvasitem.html">TQCanvasItems</a>. Canvas items can have an arbitrary +shape, size and content, can be freely moved around in the canvas, +and can be checked for collisions. Canvas items can be set to move +across the canvas automatically and animated canvas items are +supported with <a href="qcanvassprite.html">TQCanvasSprite</a>. (If you retquire 3D graphics see TQt's +<a href="opengl.html">OpenGL module</a>.) +<p> The canvas module uses a document/view model. The <a href="qcanvasview.html">TQCanvasView</a> class +is used to show a particular view of a canvas. Multiple views can operate +on the same canvas at the same time. Every view can use an arbitrary +<a href="qwmatrix.html#TransformationMode">transformation matrix</a> on the canvas which makes it easy to implement +features such as zooming. +<p> <center><a href="qcanvas.html"> +<img src="qcanvas.png" alt="Screenshot of a canvas"></a></center> +<p> TQt provides a number of predefined <a href="qcanvas.html">TQCanvas</a> items as listed below. +<p> <ul> +<li> <a href="qcanvasitem.html">TQCanvasItem</a> -- An abstract base class for all canvas items. +<li> <a href="qcanvasellipse.html">TQCanvasEllipse</a> -- An ellipse or "pie segment". +<li> <a href="qcanvasline.html">TQCanvasLine</a> -- A line segment. +<li> <a href="qcanvaspolygon.html">TQCanvasPolygon</a> -- A polygon. +<li> <a href="qcanvaspolygonalitem.html">TQCanvasPolygonalItem</a> -- A base class for items that have a +non-rectangular shape. Most canvas items derive from this class. +<li> <a href="qcanvasrectangle.html">TQCanvasRectangle</a> -- A rectangle. The rectangle cannot be tilted or +rotated. Rotated rectangles can be drawn using TQCanvasPolygon. +<li> <a href="qcanvasspline.html">TQCanvasSpline</a> -- A multi-bezier spline. +<li> <a href="qcanvassprite.html">TQCanvasSprite</a> -- An animated pixmap. +<li> <a href="qcanvastext.html">TQCanvasText</a> -- A text string. +</ul> +<p> The two classes <a href="qcanvaspixmap.html">TQCanvasPixmap</a> and <a href="qcanvaspixmaparray.html">TQCanvasPixmapArray</a> are used +by <a href="qcanvassprite.html">TQCanvasSprite</a> to show animated and moving pixmaps on the +canvas. +<p> More specialized items can be created by inheriting from one of the +canvas item classes. It is easiest to inherit from one of +<a href="qcanvasitem.html">TQCanvasItem</a>'s derived classes (usually <a href="qcanvaspolygonalitem.html">TQCanvasPolygonalItem</a>) rather +than inherit TQCanvasItem directly. +<p> See <tt>examples/canvas</tt> for an example that shows off some of <a href="qcanvas.html">TQCanvas</a>'s +capabilities. +<p> +<!-- eof --> +<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> |