<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Graphics.UI.Gtk.Gdk.Region</title><link href="ocean.css" rel="stylesheet" type="text/css" title="Ocean" /><script src="haddock-util.js" type="text/javascript"></script><script type="text/javascript">//<![CDATA[
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</script></head><body><div id="package-header"><ul class="links" id="page-menu"><li><a href="src/Graphics-UI-Gtk-Gdk-Region.html">Source</a></li><li><a href="index.html">Contents</a></li><li><a href="doc-index.html">Index</a></li></ul><p class="caption">gtk-0.12.0: Binding to the Gtk+ graphical user interface library.</p></div><div id="content"><div id="module-header"><table class="info"><tr><th>Portability</th><td>portable (depends on GHC)</td></tr><tr><th>Stability</th><td>provisional</td></tr><tr><th>Maintainer</th><td>gtk2hs-users@lists.sourceforge.net</td></tr></table><p class="caption">Graphics.UI.Gtk.Gdk.Region</p></div><div id="description"><p class="caption">Description</p><div class="doc"><p>A set of rectangles describing areas to be redrawn.
</p><ul><li> Regions consist of a set of non-overlapping rectangles. They are used to
specify the area of a window which needs updating.
</li></ul></div></div><div id="synopsis"><p id="control.syn" class="caption expander" onclick="toggleSection('syn')">Synopsis</p><ul id="section.syn" class="hide" onclick="toggleSection('syn')"><li class="src short"><a href="#v:makeNewRegion">makeNewRegion</a> :: <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a></li><li class="src short"><span class="keyword">newtype</span> <a href="#t:Region">Region</a> = <a href="#v:Region">Region</a> (<a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Foreign-ForeignPtr.html#t:ForeignPtr">ForeignPtr</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a>)</li><li class="src short"><a href="#v:regionNew">regionNew</a> :: <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a></li><li class="src short"><span class="keyword">data</span> <a href="#t:FillRule">FillRule</a> <ul class="subs"><li>= <a href="#v:EvenOddRule">EvenOddRule</a> </li><li>| <a href="#v:WindingRule">WindingRule</a> </li></ul></li><li class="src short"><a href="#v:regionPolygon">regionPolygon</a> :: [<a href="Graphics-UI-Gtk-Gdk-Drawable.html#t:Point">Point</a>] -> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:FillRule">FillRule</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a></li><li class="src short"><a href="#v:regionCopy">regionCopy</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a></li><li class="src short"><a href="#v:regionRectangle">regionRectangle</a> :: <a href="Graphics-UI-Gtk-Gdk-Events.html#t:Rectangle">Rectangle</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a></li><li class="src short"><a href="#v:regionGetClipbox">regionGetClipbox</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="Graphics-UI-Gtk-Gdk-Events.html#t:Rectangle">Rectangle</a></li><li class="src short"><a href="#v:regionGetRectangles">regionGetRectangles</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> [<a href="Graphics-UI-Gtk-Gdk-Events.html#t:Rectangle">Rectangle</a>]</li><li class="src short"><a href="#v:regionEmpty">regionEmpty</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:regionEqual">regionEqual</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:regionPointIn">regionPointIn</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="Graphics-UI-Gtk-Gdk-Drawable.html#t:Point">Point</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><span class="keyword">data</span> <a href="#t:OverlapType">OverlapType</a> <ul class="subs"><li>= <a href="#v:OverlapRectangleIn">OverlapRectangleIn</a> </li><li>| <a href="#v:OverlapRectangleOut">OverlapRectangleOut</a> </li><li>| <a href="#v:OverlapRectanglePart">OverlapRectanglePart</a> </li></ul></li><li class="src short"><a href="#v:regionRectIn">regionRectIn</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="Graphics-UI-Gtk-Gdk-Events.html#t:Rectangle">Rectangle</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:OverlapType">OverlapType</a></li><li class="src short"><a href="#v:regionOffset">regionOffset</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Int.html#t:Int">Int</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Int.html#t:Int">Int</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t:-40--41-">()</a></li><li class="src short"><a href="#v:regionShrink">regionShrink</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Int.html#t:Int">Int</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Int.html#t:Int">Int</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t:-40--41-">()</a></li><li class="src short"><a href="#v:regionUnionWithRect">regionUnionWithRect</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="Graphics-UI-Gtk-Gdk-Events.html#t:Rectangle">Rectangle</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t:-40--41-">()</a></li><li class="src short"><a href="#v:regionIntersect">regionIntersect</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t:-40--41-">()</a></li><li class="src short"><a href="#v:regionUnion">regionUnion</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t:-40--41-">()</a></li><li class="src short"><a href="#v:regionSubtract">regionSubtract</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t:-40--41-">()</a></li><li class="src short"><a href="#v:regionXor">regionXor</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t:-40--41-">()</a></li></ul></div><div id="interface"><h1>Documentation</h1><div class="top"><p class="src"><a name="v:makeNewRegion" class="def">makeNewRegion</a> :: <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Foreign-Ptr.html#t:Ptr">Ptr</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a><a href="src/Graphics-UI-Gtk-Gdk-Region.html#makeNewRegion" class="link">Source</a></p></div><div class="top"><p class="src"><span class="keyword">newtype</span> <a name="t:Region" class="def">Region</a> <a href="src/Graphics-UI-Gtk-Gdk-Region.html#Region" class="link">Source</a></p><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:Region" class="def">Region</a> (<a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Foreign-ForeignPtr.html#t:ForeignPtr">ForeignPtr</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a>)</td><td class="doc empty"> </td></tr></table></div><div class="subs instances"><p id="control.i:Region" class="caption collapser" onclick="toggleSection('i:Region')">Instances</p><div id="section.i:Region" class="show"><table><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Text-Show.html#t:Show">Show</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a></td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><a name="v:regionNew" class="def">regionNew</a> :: <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a><a href="src/Graphics-UI-Gtk-Gdk-Region.html#regionNew" class="link">Source</a></p><div class="doc"><p>Create an empty region.
</p></div></div><div class="top"><p class="src"><span class="keyword">data</span> <a name="t:FillRule" class="def">FillRule</a> <a href="src/Graphics-UI-Gtk-Gdk-Region.html#FillRule" class="link">Source</a></p><div class="doc"><p>Specify how to interpret a polygon.
</p><ul><li> The flag determines what happens if a polygon has overlapping areas.
</li></ul></div><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:EvenOddRule" class="def">EvenOddRule</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a name="v:WindingRule" class="def">WindingRule</a></td><td class="doc empty"> </td></tr></table></div><div class="subs instances"><p id="control.i:FillRule" class="caption collapser" onclick="toggleSection('i:FillRule')">Instances</p><div id="section.i:FillRule" class="show"><table><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Prelude.html#t:Enum">Enum</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:FillRule">FillRule</a></td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><a name="v:regionPolygon" class="def">regionPolygon</a> :: [<a href="Graphics-UI-Gtk-Gdk-Drawable.html#t:Point">Point</a>] -> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:FillRule">FillRule</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a><a href="src/Graphics-UI-Gtk-Gdk-Region.html#regionPolygon" class="link">Source</a></p><div class="doc"><p>Convert a polygon into a <code><a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a></code>.
</p></div></div><div class="top"><p class="src"><a name="v:regionCopy" class="def">regionCopy</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a><a href="src/Graphics-UI-Gtk-Gdk-Region.html#regionCopy" class="link">Source</a></p><div class="doc"><p>Copy a <code><a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a></code>.
</p></div></div><div class="top"><p class="src"><a name="v:regionRectangle" class="def">regionRectangle</a> :: <a href="Graphics-UI-Gtk-Gdk-Events.html#t:Rectangle">Rectangle</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a><a href="src/Graphics-UI-Gtk-Gdk-Region.html#regionRectangle" class="link">Source</a></p><div class="doc"><p>Convert a rectangle to a <code><a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a></code>.
</p></div></div><div class="top"><p class="src"><a name="v:regionGetClipbox" class="def">regionGetClipbox</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="Graphics-UI-Gtk-Gdk-Events.html#t:Rectangle">Rectangle</a><a href="src/Graphics-UI-Gtk-Gdk-Region.html#regionGetClipbox" class="link">Source</a></p><div class="doc"><p>Smallest rectangle including the
<code><a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a></code>.
</p></div></div><div class="top"><p class="src"><a name="v:regionGetRectangles" class="def">regionGetRectangles</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> [<a href="Graphics-UI-Gtk-Gdk-Events.html#t:Rectangle">Rectangle</a>]<a href="src/Graphics-UI-Gtk-Gdk-Region.html#regionGetRectangles" class="link">Source</a></p><div class="doc"><p>Turn the <code><a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a></code> into its rectangles.
</p><p>A <code><a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a></code> is a set of horizontal bands. Each band consists of one or more
rectangles of the same height. No rectangles in a band touch.
</p></div></div><div class="top"><p class="src"><a name="v:regionEmpty" class="def">regionEmpty</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Bool.html#t:Bool">Bool</a><a href="src/Graphics-UI-Gtk-Gdk-Region.html#regionEmpty" class="link">Source</a></p><div class="doc"><p>Test if a <code><a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a></code> is empty.
</p></div></div><div class="top"><p class="src"><a name="v:regionEqual" class="def">regionEqual</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Bool.html#t:Bool">Bool</a><a href="src/Graphics-UI-Gtk-Gdk-Region.html#regionEqual" class="link">Source</a></p><div class="doc"><p>Compares two <code><a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a></code>s for equality.
</p></div></div><div class="top"><p class="src"><a name="v:regionPointIn" class="def">regionPointIn</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="Graphics-UI-Gtk-Gdk-Drawable.html#t:Point">Point</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Bool.html#t:Bool">Bool</a><a href="src/Graphics-UI-Gtk-Gdk-Region.html#regionPointIn" class="link">Source</a></p><div class="doc"><p>Checks if a point it is within a region.
</p></div></div><div class="top"><p class="src"><span class="keyword">data</span> <a name="t:OverlapType" class="def">OverlapType</a> <a href="src/Graphics-UI-Gtk-Gdk-Region.html#OverlapType" class="link">Source</a></p><div class="doc"><p>How a rectangle is contained in a <code><a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a></code>.
</p></div><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:OverlapRectangleIn" class="def">OverlapRectangleIn</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a name="v:OverlapRectangleOut" class="def">OverlapRectangleOut</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a name="v:OverlapRectanglePart" class="def">OverlapRectanglePart</a></td><td class="doc empty"> </td></tr></table></div><div class="subs instances"><p id="control.i:OverlapType" class="caption collapser" onclick="toggleSection('i:OverlapType')">Instances</p><div id="section.i:OverlapType" class="show"><table><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Prelude.html#t:Enum">Enum</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:OverlapType">OverlapType</a></td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><a name="v:regionRectIn" class="def">regionRectIn</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="Graphics-UI-Gtk-Gdk-Events.html#t:Rectangle">Rectangle</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:OverlapType">OverlapType</a><a href="src/Graphics-UI-Gtk-Gdk-Region.html#regionRectIn" class="link">Source</a></p><div class="doc"><p>Check if a rectangle is within a region.
</p></div></div><div class="top"><p class="src"><a name="v:regionOffset" class="def">regionOffset</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Int.html#t:Int">Int</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Int.html#t:Int">Int</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t:-40--41-">()</a><a href="src/Graphics-UI-Gtk-Gdk-Region.html#regionOffset" class="link">Source</a></p><div class="doc"><p>Move a region.
</p></div></div><div class="top"><p class="src"><a name="v:regionShrink" class="def">regionShrink</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Int.html#t:Int">Int</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Int.html#t:Int">Int</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t:-40--41-">()</a><a href="src/Graphics-UI-Gtk-Gdk-Region.html#regionShrink" class="link">Source</a></p><div class="doc"><p>Move a region.
</p><ul><li> Positive values shrink the region, negative values expand it.
</li></ul></div></div><div class="top"><p class="src"><a name="v:regionUnionWithRect" class="def">regionUnionWithRect</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="Graphics-UI-Gtk-Gdk-Events.html#t:Rectangle">Rectangle</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t:-40--41-">()</a><a href="src/Graphics-UI-Gtk-Gdk-Region.html#regionUnionWithRect" class="link">Source</a></p><div class="doc"><p>Updates the region to include the rectangle.
</p></div></div><div class="top"><p class="src"><a name="v:regionIntersect" class="def">regionIntersect</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t:-40--41-">()</a><a href="src/Graphics-UI-Gtk-Gdk-Region.html#regionIntersect" class="link">Source</a></p><div class="doc"><p>Intersects one region with another.
</p><ul><li> Changes <code>reg1</code> to include the common areas of <code>reg1</code>
and <code>reg2</code>.
</li></ul></div></div><div class="top"><p class="src"><a name="v:regionUnion" class="def">regionUnion</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t:-40--41-">()</a><a href="src/Graphics-UI-Gtk-Gdk-Region.html#regionUnion" class="link">Source</a></p><div class="doc"><p>Unions one region with another.
</p><ul><li> Changes <code>reg1</code> to include <code>reg1</code> and <code>reg2</code>.
</li></ul></div></div><div class="top"><p class="src"><a name="v:regionSubtract" class="def">regionSubtract</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t:-40--41-">()</a><a href="src/Graphics-UI-Gtk-Gdk-Region.html#regionSubtract" class="link">Source</a></p><div class="doc"><p>Removes pars of a <code><a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a></code>.
</p><ul><li> Reduces the region <code>reg1</code> so that is does not include any areas
of <code>reg2</code>.
</li></ul></div></div><div class="top"><p class="src"><a name="v:regionXor" class="def">regionXor</a> :: <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a> -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> <a href="/usr/share/doc/ghc/html/libraries/ghc-prim-0.2.0.0/GHC-Unit.html#t:-40--41-">()</a><a href="src/Graphics-UI-Gtk-Gdk-Region.html#regionXor" class="link">Source</a></p><div class="doc"><p>XORs two <code><a href="Graphics-UI-Gtk-Gdk-Region.html#t:Region">Region</a></code>s.
</p><ul><li> The exclusive or of two regions contains all areas which were not
overlapping. In other words, it is the union of the regions minus
their intersections.
</li></ul></div></div></div></div><div id="footer"><p>Produced by <a href="http://www.haskell.org/haddock/">Haddock</a> version 2.9.2</p></div></body></html>
