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<!DOCTYPE html PUBLIC "-//gnu.org///DTD XHTML 1.1 plus Target 1.0//EN" "../../../resources/xhtml11-target10.dtd"><html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><title>Canvas (Java-Gnome 2.12.4 API Reference)</title><script src="../../../resources/gjdoc.js" type="text/javascript"><!-- this comment required for konqueror 3.2.2 --></script><meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"/><meta name="generator" content="GNU Gjdoc Standard Doclet"/><meta name="keywords" content="org.gnu.gnome.Canvas class"/><meta name="keywords" content="getCanvas()"/><meta name="keywords" content="getColor()"/><meta name="keywords" content="getColorPixel()"/><meta name="keywords" content="getCurrentCanvasItem()"/><meta name="keywords" content="getDither()"/><meta name="keywords" content="setDither()"/><meta name="keywords" content="getFocusedCanvasItem()"/><meta name="keywords" content="getGrabbedCanvasItem()"/><meta name="keywords" content="getItemAt()"/><meta name="keywords" content="getPixelsPerUnit()"/><meta name="keywords" content="setPixelsPerUnit()"/><meta name="keywords" content="getRoot()"/><meta name="keywords" content="getScrollOffsetX()"/><meta name="keywords" content="getScrollOffsetY()"/><meta name="keywords" content="getScrollX1()"/><meta name="keywords" content="setScrollX1()"/><meta name="keywords" content="getScrollX2()"/><meta name="keywords" content="setScrollX2()"/><meta name="keywords" content="getScrollY1()"/><meta name="keywords" content="setScrollY1()"/><meta name="keywords" content="getScrollY2()"/><meta name="keywords" content="setScrollY2()"/><meta name="keywords" content="scrollTo()"/><meta name="keywords" content="setScrollRegion()"/><meta name="keywords" content="update()"/><meta name="keywords" content="getType()"/><meta name="keywords" content="getCenterScrollRegion()"/><meta name="keywords" content="setCenterScrollRegion()"/><meta name="keywords" content="requestRedraw()"/><meta name="keywords" content="windowToWorldX()"/><meta name="keywords" content="windowToWorldY()"/><meta name="keywords" content="worldToWindowX()"/><meta name="keywords" content="worldToWindowY()"/><link rel="stylesheet" type="text/css" href="../../../resources/gjdochtml-clean-layout.css" title="GNU Clean"/><link rel="stylesheet" type="text/css" href="../../../resources/gjdochtml-clean-color1.css" title="GNU Clean"/></head><body class="content class" onload="if(parent.contentPageLoaded)parent.contentPageLoaded(document.title)"><table class="navbar div top"><tr><td class="navbar div top"><div class="navbar div top"><span class="navbar item enabled"><a href="../../../overview-summary.html">Overview</a></span> <span class="navbar item enabled"><a href="package-summary.html">Package</a></span> <span class="navbar item enabled"><a href="tree.html">Tree</a></span> <span class="navbar item enabled"><a href="../../../alphaindex.html">Index</a></span> <span class="navbar item enabled"><a href="../../../deprecated.html">Deprecated</a></span> <span class="navbar item enabled"><a href="../../../about.html">About</a></span></div></td></tr><tr><td class="navi"><a href="../../../org/gnu/gnome/AppBar.html">Prev Class</a> | <a href="../../../org/gnu/gnome/CanvasBpath.html">Next Class</a></td><td class="navi"><a href="../../../index.html" title="Show in a frameset" target="_top">Frames</a> | <a href="Canvas.html" title="Show without frames" target="_top">No Frames</a> </td></tr><tr><td class="navi">Summary: Nested | Field | <a href="#summary-methods">Method</a> | <a href="#summary-constructors">Constr</a></td><td class="navi">Detail: Nested | Field | <a href="#detail-methods">Method</a> | <a href="#detail-constructors">Constr</a></td></tr></table><div class="class title outer"><h3 class="class title-package">org.gnu.gnome</h3><h1 class="class title-class">Class Canvas</h1></div><div class="class inheritance-tree"><ul class="inheritance 0"><li class="inheritance 0"><code>Layout</code></li><li><ul class="inheritance 1"><li class="inheritance 1"><code>org.gnu.gnome.Canvas</code></li><li></li></ul></li></ul></div><dl class="class subclasses"><dt class="class subclasses header"><b>Known Direct Subclasses:</b></dt><dd class="class subclasses header"><a href="../../../org/gnu/gnome/IconList.html" title="Class in org.gnu.gnome">IconList</a></dd></b></dt></dl><hr/><div class="class synopsis outer"><div class="class synopsis declaration"><code>public class <b class="class synopsis name">Canvas</b></code></div><div class="class synopsis superclass"><code>extends Layout</code></div></div><hr/><div class="class description"> You can use the GnomeCanvas widget to draw figures, display graphics,
position widgets, and more.
</div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><a name="summary-constructors" id="summary-constructors"/><dl class="table container"><dd><table class="class summary" border="1" width="100%"><tr class="table header"><td colspan="2"><h2 class="table header">Constructor Summary</h2></td></tr><tr><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#Canvas()">Canvas</a>()</code></dt><dd class="description"><span class="deprecated"><b class="deprecated header">Deprecated. </b><i class="deprecated"></i><span class="deprecated"></dd></dl></td></tr><tr><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#Canvas(Handle)">Canvas</a>(Handle handle)</code></dt><dd class="description"> Constructs a new Canvas object form a native resource.</dd></dl></td></tr><tr><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#Canvas(boolean)">Canvas</a>(boolean useAntialiased)</code></dt><dd class="description"> Constructs a new Canvas.</dd></dl></td></tr></table></dd></dl><a name="summary-methods" id="summary-methods"/><dl class="table container"><dd><table class="class summary" border="1" width="100%"><tr class="table header"><td colspan="2"><h2 class="table header">Method Summary</h2></td></tr><tr><td class="left" valign="top"><code class="synopsis">static <a href="../../../org/gnu/gnome/Canvas.html" title="Class in org.gnu.gnome">Canvas</a></code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getCanvas(Handle)">getCanvas</a>(Handle handle)</code></dt><dd class="description"> Internal static factory method to be used by Java-Gnome only.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> boolean</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getCenterScrollRegion()">getCenterScrollRegion</a>()</code></dt></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> Color</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getColor(String)">getColor</a>(String spec)</code></dt><dd class="description"> Takes a string specification for a color and allocates it into the
specified GdkColor.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> long</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getColorPixel(int)">getColorPixel</a>(int rgba)</code></dt><dd class="description"> Allocates a color from the RGB value passed into this function.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> <a href="../../../org/gnu/gnome/CanvasItem.html" title="Class in org.gnu.gnome">CanvasItem</a></code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getCurrentCanvasItem()">getCurrentCanvasItem</a>()</code></dt><dd class="description"> The item containing the mouse pointer, or NULL if none.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> RgbDither</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getDither()">getDither</a>()</code></dt><dd class="description"> Returns the dither mode of an antialiased canvas.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> <a href="../../../org/gnu/gnome/CanvasItem.html" title="Class in org.gnu.gnome">CanvasItem</a></code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getFocusedCanvasItem()">getFocusedCanvasItem</a>()</code></dt><dd class="description"> The currently focused item, or NULL if none.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> <a href="../../../org/gnu/gnome/CanvasItem.html" title="Class in org.gnu.gnome">CanvasItem</a></code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getGrabbedCanvasItem()">getGrabbedCanvasItem</a>()</code></dt><dd class="description"> The item that holds a pointer grab, or NULL if none.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> <a href="../../../org/gnu/gnome/CanvasItem.html" title="Class in org.gnu.gnome">CanvasItem</a></code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getItemAt(double,double)">getItemAt</a>(double x, double y)</code></dt><dd class="description"> Returns the item that is at the specified position in world coordinates,
or NULL if no item is there.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> double</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getPixelsPerUnit()">getPixelsPerUnit</a>()</code></dt><dd class="description"> Scaling factor to be used for display.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> <a href="../../../org/gnu/gnome/CanvasGroup.html" title="Class in org.gnu.gnome">CanvasGroup</a></code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getRoot()">getRoot</a>()</code></dt><dd class="description"> Returns the root canvas item group of the canvas
</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> double</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getScrollOffsetX()">getScrollOffsetX</a>()</code></dt><dd class="description"> Returns the horizontal scroll offset of the canvas in canvas pixel
coordinates.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> double</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getScrollOffsetY()">getScrollOffsetY</a>()</code></dt><dd class="description"> Returns the vertical scroll offset of the canvas in canvas pixel
coordinates.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> double</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getScrollX1()">getScrollX1</a>()</code></dt><dd class="description"> The x1 coordinate of the scrolling region.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> double</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getScrollX2()">getScrollX2</a>()</code></dt><dd class="description"> The x2 coordinate of the scrolling region.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> double</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getScrollY1()">getScrollY1</a>()</code></dt><dd class="description"> The y1 coordinate of the scrolling region.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> double</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getScrollY2()">getScrollY2</a>()</code></dt><dd class="description"> The y2 coordinate of the scrolling region.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis">static Type</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#getType()">getType</a>()</code></dt><dd class="description"> Retrieve the runtime type used by the GLib library.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> void</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#requestRedraw(int,int,int,int)">requestRedraw</a>(int x1, int y1, int x2, int y2)</code></dt></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> void</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#scrollTo(int,int)">scrollTo</a>(int cx, int cy)</code></dt><dd class="description"> Scrolls the canvas to the specified offsets, given in canvas pixel
coordinates.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> void</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#setCenterScrollRegion(boolean)">setCenterScrollRegion</a>(boolean center)</code></dt></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> void</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#setDither(RgbDither)">setDither</a>(RgbDither dither)</code></dt><dd class="description"> Controls the dithering used when the canvas renders.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> void</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#setPixelsPerUnit(double)">setPixelsPerUnit</a>(double n)</code></dt><dd class="description"> Sets the number of pixels that correspond to one unit in world
coordinates.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> void</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#setScrollRegion(double,double,double,double)">setScrollRegion</a>(double x1, double y1, double x2, double y2)</code></dt><dd class="description"> Convenience method to set all 4 coordinates of the scroll region at once.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> void</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#setScrollX1(double)">setScrollX1</a>(double x1)</code></dt><dd class="description"> Set the scroll region's X1 coordinate.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> void</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#setScrollX2(double)">setScrollX2</a>(double x2)</code></dt><dd class="description"> Set the scroll region's X2 coordinate.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> void</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#setScrollY1(double)">setScrollY1</a>(double y1)</code></dt><dd class="description"> Set the scroll region's Y1 coordinate.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> void</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#setScrollY2(double)">setScrollY2</a>(double y2)</code></dt><dd class="description"> Set the scroll region's Y2 coordinate.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> void</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#update()">update</a>()</code></dt><dd class="description"> Requests that the canvas be repainted immediately instead of during the
idle loop.</dd></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> double</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#windowToWorldX(double)">windowToWorldX</a>(double winx)</code></dt></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> double</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#windowToWorldY(double)">windowToWorldY</a>(double winy)</code></dt></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> double</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#worldToWindowX(double)">worldToWindowX</a>(double worldx)</code></dt></dl></td></tr><tr><td class="left" valign="top"><code class="synopsis"> double</code></td><td class="right"><dl class="list"><dt class="synopsis"><code><a href="#worldToWindowY(double)">worldToWindowY</a>(double worldy)</code></dt></dl></td></tr></table></dd></dl><a name="detail-constructors" id="detail-constructors"/><h2 class="section header">Constructor Details</h2><div class="section"><a name="Canvas()" id="Canvas()"/><div class="member detail outer"><h3 class="member detail name">Canvas</h3><pre class="member detail synopsis">public Canvas()</pre><blockquote class="member detail name"><p class="deprecated"><b class="deprecated header">Deprecated. </b><i class="deprecated"></i><p class="deprecated"><div class="member detail description"> Construct a new Canvas.
</div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="Canvas(Handle)" id="Canvas(Handle)"/><div class="member detail outer"><h3 class="member detail name">Canvas</h3><pre class="member detail synopsis">public Canvas(Handle handle)</pre><blockquote class="member detail name"><div class="member detail description"> Constructs a new Canvas object form a native resource.
</div><div class="parameter"><dl><dt class="header"><b>Parameters:</b></dt><dd class="item"><code class="name">handle</code><span class="separator"> - </span><span class="description">The handle to the native resource.</span></dd></dl></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="Canvas(boolean)" id="Canvas(boolean)"/><div class="member detail outer"><h3 class="member detail name">Canvas</h3><pre class="member detail synopsis">public Canvas(boolean useAntialiased)</pre><blockquote class="member detail name"><div class="member detail description"> Constructs a new Canvas.
</div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div></div><a name="detail-methods" id="detail-methods"/><h2 class="section header">Method Details</h2><div class="section"><a name="getCanvas(Handle)" id="getCanvas(Handle)"/><div class="member detail outer"><h3 class="member detail name">getCanvas</h3><pre class="member detail synopsis">public static <a href="../../../org/gnu/gnome/Canvas.html" title="Class in org.gnu.gnome">Canvas</a> getCanvas(Handle handle)</pre><blockquote class="member detail name"><div class="member detail description"> Internal static factory method to be used by Java-Gnome only.
</div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="getCenterScrollRegion()" id="getCenterScrollRegion()"/><div class="member detail outer"><h3 class="member detail name">getCenterScrollRegion</h3><pre class="member detail synopsis">public boolean getCenterScrollRegion()</pre><blockquote class="member detail name"><div class="member detail description"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="getColor(String)" id="getColor(String)"/><div class="member detail outer"><h3 class="member detail name">getColor</h3><pre class="member detail synopsis">public Color getColor(String spec)</pre><blockquote class="member detail name"><div class="member detail description"> Takes a string specification for a color and allocates it into the
specified GdkColor.
</div><div class="parameter"><dl><dt class="header"><b>Parameters:</b></dt><dd class="item"><code class="name">spec</code><span class="separator"> - </span><span class="description">The color to allocate.</span></dd></dl></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="getColorPixel(int)" id="getColorPixel(int)"/><div class="member detail outer"><h3 class="member detail name">getColorPixel</h3><pre class="member detail synopsis">public long getColorPixel(int rgba)</pre><blockquote class="member detail name"><div class="member detail description"> Allocates a color from the RGB value passed into this function.
</div><div class="parameter"><dl><dt class="header"><b>Parameters:</b></dt><dd class="item"><code class="name">rgba</code><span class="separator"> - </span><span class="description">The RGB value.</span></dd></dl></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="getCurrentCanvasItem()" id="getCurrentCanvasItem()"/><div class="member detail outer"><h3 class="member detail name">getCurrentCanvasItem</h3><pre class="member detail synopsis">public <a href="../../../org/gnu/gnome/CanvasItem.html" title="Class in org.gnu.gnome">CanvasItem</a> getCurrentCanvasItem()</pre><blockquote class="member detail name"><div class="member detail description"> The item containing the mouse pointer, or NULL if none.
</div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="getDither()" id="getDither()"/><div class="member detail outer"><h3 class="member detail name">getDither</h3><pre class="member detail synopsis">public RgbDither getDither()</pre><blockquote class="member detail name"><div class="member detail description"> Returns the dither mode of an antialiased canvas. Only applicable to
antialiased canvases - ignored by non-antialiased convases.
</div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="getFocusedCanvasItem()" id="getFocusedCanvasItem()"/><div class="member detail outer"><h3 class="member detail name">getFocusedCanvasItem</h3><pre class="member detail synopsis">public <a href="../../../org/gnu/gnome/CanvasItem.html" title="Class in org.gnu.gnome">CanvasItem</a> getFocusedCanvasItem()</pre><blockquote class="member detail name"><div class="member detail description"> The currently focused item, or NULL if none.
</div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="getGrabbedCanvasItem()" id="getGrabbedCanvasItem()"/><div class="member detail outer"><h3 class="member detail name">getGrabbedCanvasItem</h3><pre class="member detail synopsis">public <a href="../../../org/gnu/gnome/CanvasItem.html" title="Class in org.gnu.gnome">CanvasItem</a> getGrabbedCanvasItem()</pre><blockquote class="member detail name"><div class="member detail description"> The item that holds a pointer grab, or NULL if none.
</div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="getItemAt(double,double)" id="getItemAt(double,double)"/><div class="member detail outer"><h3 class="member detail name">getItemAt</h3><pre class="member detail synopsis">public <a href="../../../org/gnu/gnome/CanvasItem.html" title="Class in org.gnu.gnome">CanvasItem</a> getItemAt(double x,
double y)</pre><blockquote class="member detail name"><div class="member detail description"> Returns the item that is at the specified position in world coordinates,
or NULL if no item is there.
</div><div class="parameter"><dl><dt class="header"><b>Parameters:</b></dt><dd class="item"><code class="name">x</code><span class="separator"> - </span><span class="description">The horizontal coordinate.</span></dd><dd class="item"><code class="name">y</code><span class="separator"> - </span><span class="description">The vertical coordinate.</span></dd></dl></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="getPixelsPerUnit()" id="getPixelsPerUnit()"/><div class="member detail outer"><h3 class="member detail name">getPixelsPerUnit</h3><pre class="member detail synopsis">public double getPixelsPerUnit()</pre><blockquote class="member detail name"><div class="member detail description"> Scaling factor to be used for display.
</div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="getRoot()" id="getRoot()"/><div class="member detail outer"><h3 class="member detail name">getRoot</h3><pre class="member detail synopsis">public <a href="../../../org/gnu/gnome/CanvasGroup.html" title="Class in org.gnu.gnome">CanvasGroup</a> getRoot()</pre><blockquote class="member detail name"><div class="member detail description"> Returns the root canvas item group of the canvas
</div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="getScrollOffsetX()" id="getScrollOffsetX()"/><div class="member detail outer"><h3 class="member detail name">getScrollOffsetX</h3><pre class="member detail synopsis">public double getScrollOffsetX()</pre><blockquote class="member detail name"><div class="member detail description"> Returns the horizontal scroll offset of the canvas in canvas pixel
coordinates.
</div><div class="member detail return list"><dl><dt class="member detail return header"><b>Returns:</b></dt><dd class="member detail return item">The scroll offset x coordinate.</dd></dl></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="getScrollOffsetY()" id="getScrollOffsetY()"/><div class="member detail outer"><h3 class="member detail name">getScrollOffsetY</h3><pre class="member detail synopsis">public double getScrollOffsetY()</pre><blockquote class="member detail name"><div class="member detail description"> Returns the vertical scroll offset of the canvas in canvas pixel
coordinates.
</div><div class="member detail return list"><dl><dt class="member detail return header"><b>Returns:</b></dt><dd class="member detail return item">The scroll offset y coordinate.</dd></dl></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="getScrollX1()" id="getScrollX1()"/><div class="member detail outer"><h3 class="member detail name">getScrollX1</h3><pre class="member detail synopsis">public double getScrollX1()</pre><blockquote class="member detail name"><div class="member detail description"> The x1 coordinate of the scrolling region.
</div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="getScrollX2()" id="getScrollX2()"/><div class="member detail outer"><h3 class="member detail name">getScrollX2</h3><pre class="member detail synopsis">public double getScrollX2()</pre><blockquote class="member detail name"><div class="member detail description"> The x2 coordinate of the scrolling region.
</div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="getScrollY1()" id="getScrollY1()"/><div class="member detail outer"><h3 class="member detail name">getScrollY1</h3><pre class="member detail synopsis">public double getScrollY1()</pre><blockquote class="member detail name"><div class="member detail description"> The y1 coordinate of the scrolling region.
</div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="getScrollY2()" id="getScrollY2()"/><div class="member detail outer"><h3 class="member detail name">getScrollY2</h3><pre class="member detail synopsis">public double getScrollY2()</pre><blockquote class="member detail name"><div class="member detail description"> The y2 coordinate of the scrolling region.
</div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="getType()" id="getType()"/><div class="member detail outer"><h3 class="member detail name">getType</h3><pre class="member detail synopsis">public static Type getType()</pre><blockquote class="member detail name"><div class="member detail description"> Retrieve the runtime type used by the GLib library.
</div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="requestRedraw(int,int,int,int)" id="requestRedraw(int,int,int,int)"/><div class="member detail outer"><h3 class="member detail name">requestRedraw</h3><pre class="member detail synopsis">public void requestRedraw(int x1,
int y1,
int x2,
int y2)</pre><blockquote class="member detail name"><div class="member detail description"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="scrollTo(int,int)" id="scrollTo(int,int)"/><div class="member detail outer"><h3 class="member detail name">scrollTo</h3><pre class="member detail synopsis">public void scrollTo(int cx,
int cy)</pre><blockquote class="member detail name"><div class="member detail description"> Scrolls the canvas to the specified offsets, given in canvas pixel
coordinates.
</div><div class="parameter"><dl><dt class="header"><b>Parameters:</b></dt><dd class="item"><code class="name">cx</code><span class="separator"> - </span><span class="description">Horizontal coordinate.</span></dd><dd class="item"><code class="name">cy</code><span class="separator"> - </span><span class="description">Vertical coordinate.</span></dd></dl></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="setCenterScrollRegion(boolean)" id="setCenterScrollRegion(boolean)"/><div class="member detail outer"><h3 class="member detail name">setCenterScrollRegion</h3><pre class="member detail synopsis">public void setCenterScrollRegion(boolean center)</pre><blockquote class="member detail name"><div class="member detail description"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="setDither(RgbDither)" id="setDither(RgbDither)"/><div class="member detail outer"><h3 class="member detail name">setDither</h3><pre class="member detail synopsis">public void setDither(RgbDither dither)</pre><blockquote class="member detail name"><div class="member detail description"> Controls the dithering used when the canvas renders. Only applicable to
antialiased canvases - ignored by non-antialiased canvases.
</div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="setPixelsPerUnit(double)" id="setPixelsPerUnit(double)"/><div class="member detail outer"><h3 class="member detail name">setPixelsPerUnit</h3><pre class="member detail synopsis">public void setPixelsPerUnit(double n)</pre><blockquote class="member detail name"><div class="member detail description"> Sets the number of pixels that correspond to one unit in world
coordinates.
</div><div class="parameter"><dl><dt class="header"><b>Parameters:</b></dt><dd class="item"><code class="name">n</code><span class="separator"> - </span><span class="description">The number of pixels</span></dd></dl></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="setScrollRegion(double,double,double,double)" id="setScrollRegion(double,double,double,double)"/><div class="member detail outer"><h3 class="member detail name">setScrollRegion</h3><pre class="member detail synopsis">public void setScrollRegion(double x1,
double y1,
double x2,
double y2)</pre><blockquote class="member detail name"><div class="member detail description"> Convenience method to set all 4 coordinates of the scroll region at once.
</div><div class="parameter"><dl><dt class="header"><b>Parameters:</b></dt><dd class="item"><code class="name">x1</code><span class="separator"> - </span><span class="description">First horizontal coordinate.</span></dd><dd class="item"><code class="name">y1</code><span class="separator"> - </span><span class="description">First vertical coordinate.</span></dd><dd class="item"><code class="name">x2</code><span class="separator"> - </span><span class="description">Second horizontal coordinate.</span></dd><dd class="item"><code class="name">y2</code><span class="separator"> - </span><span class="description">Second vertical coordinate.</span></dd></dl></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="setScrollX1(double)" id="setScrollX1(double)"/><div class="member detail outer"><h3 class="member detail name">setScrollX1</h3><pre class="member detail synopsis">public void setScrollX1(double x1)</pre><blockquote class="member detail name"><div class="member detail description"> Set the scroll region's X1 coordinate.
</div><div class="parameter"><dl><dt class="header"><b>Parameters:</b></dt><dd class="item"><code class="name">x1</code><span class="separator"> - </span><span class="description"></span></dd></dl></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="setScrollX2(double)" id="setScrollX2(double)"/><div class="member detail outer"><h3 class="member detail name">setScrollX2</h3><pre class="member detail synopsis">public void setScrollX2(double x2)</pre><blockquote class="member detail name"><div class="member detail description"> Set the scroll region's X2 coordinate.
</div><div class="parameter"><dl><dt class="header"><b>Parameters:</b></dt><dd class="item"><code class="name">x2</code><span class="separator"> - </span><span class="description"></span></dd></dl></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="setScrollY1(double)" id="setScrollY1(double)"/><div class="member detail outer"><h3 class="member detail name">setScrollY1</h3><pre class="member detail synopsis">public void setScrollY1(double y1)</pre><blockquote class="member detail name"><div class="member detail description"> Set the scroll region's Y1 coordinate.
</div><div class="parameter"><dl><dt class="header"><b>Parameters:</b></dt><dd class="item"><code class="name">y1</code><span class="separator"> - </span><span class="description"></span></dd></dl></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="setScrollY2(double)" id="setScrollY2(double)"/><div class="member detail outer"><h3 class="member detail name">setScrollY2</h3><pre class="member detail synopsis">public void setScrollY2(double y2)</pre><blockquote class="member detail name"><div class="member detail description"> Set the scroll region's Y2 coordinate.
</div><div class="parameter"><dl><dt class="header"><b>Parameters:</b></dt><dd class="item"><code class="name">y2</code><span class="separator"> - </span><span class="description"></span></dd></dl></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="update()" id="update()"/><div class="member detail outer"><h3 class="member detail name">update</h3><pre class="member detail synopsis">public void update()</pre><blockquote class="member detail name"><div class="member detail description"> Requests that the canvas be repainted immediately instead of during the
idle loop.
</div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="windowToWorldX(double)" id="windowToWorldX(double)"/><div class="member detail outer"><h3 class="member detail name">windowToWorldX</h3><pre class="member detail synopsis">public double windowToWorldX(double winx)</pre><blockquote class="member detail name"><div class="member detail description"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="windowToWorldY(double)" id="windowToWorldY(double)"/><div class="member detail outer"><h3 class="member detail name">windowToWorldY</h3><pre class="member detail synopsis">public double windowToWorldY(double winy)</pre><blockquote class="member detail name"><div class="member detail description"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="worldToWindowX(double)" id="worldToWindowX(double)"/><div class="member detail outer"><h3 class="member detail name">worldToWindowX</h3><pre class="member detail synopsis">public double worldToWindowX(double worldx)</pre><blockquote class="member detail name"><div class="member detail description"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div><hr/><a name="worldToWindowY(double)" id="worldToWindowY(double)"/><div class="member detail outer"><h3 class="member detail name">worldToWindowY</h3><pre class="member detail synopsis">public double worldToWindowY(double worldy)</pre><blockquote class="member detail name"><div class="member detail description"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div><div class="taglet"></div></blockquote></div></div><p class="navbar bottom spacer"> </p><table class="navbar div bottom"><tr><td><div class="navbar div top"><span class="navbar item enabled"><a href="../../../overview-summary.html">Overview</a></span> <span class="navbar item enabled"><a href="package-summary.html">Package</a></span> <span class="navbar item enabled"><a href="tree.html">Tree</a></span> <span class="navbar item enabled"><a href="../../../alphaindex.html">Index</a></span> <span class="navbar item enabled"><a href="../../../deprecated.html">Deprecated</a></span> <span class="navbar item enabled"><a href="../../../about.html">About</a></span></div></td><td></td></tr></table></body></html>