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<TITLE>iwidgets2.2.0 User Commands - scrolledcanvas</TITLE>
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<H1>iwidgets2.2.0 User Commands - scrolledcanvas</H1>
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<PRE>
</PRE>
<H2><HR ALIGN=LEFT WIDTH=70% SIZE=3></H2><PRE>
</PRE>
<H2>NAME</H2><PRE>
scrolledcanvas - Create and manipulate scrolled canvas widg-
ets
</PRE>
<H2>SYNOPSIS</H2><PRE>
<STRONG>scrolledcanvas</STRONG> <EM>pathName</EM> ?<EM>options</EM>?
</PRE>
<H2>INHERITANCE</H2><PRE>
itk::Widget <- Labeledwidget <- scrolledcanvas
</PRE>
<H2>STANDARD OPTIONS</H2><PRE>
<STRONG>activeBackground</STRONG> <STRONG>background</STRONG> <STRONG>borderWidthcursor</STRONG>
<STRONG>exportSelection</STRONG> <STRONG>font</STRONG> <STRONG>foreground</STRONG> <STRONG>highlightColor</STRONG>
<STRONG>highlightThickness</STRONG> <STRONG>insertBorderWidthinsertOffTimeinsertOnTime</STRONG>
<STRONG>insertWidth</STRONG> <STRONG>relief</STRONG> <STRONG>repeatDelay</STRONG> <STRONG>repeatInterval</STRONG>
<STRONG>selectBackground</STRONG> <STRONG>selectBorderWidthselectForeground</STRONG>
See the "options" manual entry for details on the standard
options.
</PRE>
<H2>ASSOCIATED OPTIONS</H2><PRE>
<STRONG>closeEnough</STRONG> <STRONG>confine</STRONG> <STRONG>scrollRegion</STRONG> <STRONG>xScrollIncrement</STRONG>
<STRONG>yScrollIncrement</STRONG>
See the "canvas" widget manual entry for details on the
above associated options.
<STRONG>activeRelief</STRONG> <STRONG>elementBorderWidth</STRONG> <STRONG>jumptroughColor</STRONG>
See the "scrollbar" widget manual entry for details on the
above associated options.
</PRE>
<H2>INHERITED OPTIONS</H2><PRE>
<STRONG>labelBitmap</STRONG> <STRONG>labelFont</STRONG> <STRONG>labelImage</STRONG> <STRONG>labelMargin</STRONG>
<STRONG>labelPos</STRONG> <STRONG>labelText</STRONG> <STRONG>labelVariable</STRONG>
See the "labeledwidget" class manual entry for details on
the inherited options.
</PRE>
<H2>WIDGET-SPECIFIC OPTIONS</H2><PRE>
Name: <STRONG>autoMargin</STRONG>
Class: <STRONG>AutoMargin</STRONG>
Command-Line Switch: <STRONG>-automargin</STRONG>
Specifies the autoresize extra margin to reserve. This
option is only effective with autoresize turned on.
The default is 10.
Name: <STRONG>autoResize</STRONG>
Class: <STRONG>AutoResize</STRONG>
Command-Line Switch: <STRONG>-autoresize</STRONG>
Automatically adjusts the scrolled region to be the
bounding box covering all the items in the canvas fol-
lowing the execution of any method which creates or
destroys items. Thus, as new items are added, the
scrollbars adjust accordingly.
Name: <STRONG>height</STRONG>
Class: <STRONG>Height</STRONG>
Command-Line Switch: <STRONG>-height</STRONG>
Specifies the height of the scrolled canvas widget in
any of the forms acceptable to <STRONG>Tk_GetPixels</STRONG>. The
default height is 30 pixels.
Name: <STRONG>hscrollMode</STRONG>
Class: <STRONG>ScrollMode</STRONG>
Command-Line Switch: <STRONG>-hscrollmode</STRONG>
Specifies the the display mode to be used for the hor-
izontal scrollbar: <STRONG>static,</STRONG> <STRONG>dynamic,</STRONG> or <STRONG>none</STRONG>. In static
mode, the scroll bar is displayed at all times.
Dynamic mode displays the scroll bar as required, and
none disables the scroll bar display. The default is
static.
Name: <STRONG>sbWidth</STRONG>
Class: <STRONG>Width</STRONG>
Command-Line Switch: <STRONG>-sbwidth</STRONG>
Specifies the width of the scrollbar in any of the
forms acceptable to <STRONG>Tk_GetPixels</STRONG>. The default width is
15 pixels..
Name: <STRONG>scrollMargin</STRONG>
Class: <STRONG>ScrollMargin</STRONG>
Command-Line Switch: <STRONG>-scrollmargin</STRONG>
Specifies the distance between the canvas and scrollbar
in any of the forms acceptable to <STRONG>Tk_GetPixels</STRONG>. The
default is 3 pixels.
Name: <STRONG>textBackground</STRONG>
Class: <STRONG>Background</STRONG>
Command-Line Switch <STRONG>-textbackground</STRONG>
Specifies the background color for the canvas. This
allows the background within the canvas to be different
from the normal background color.
Name: <STRONG>vscrollMode</STRONG>
Class: <STRONG>ScrollMode</STRONG>
Command-Line Switch: <STRONG>-vscrollmode</STRONG>
Specifies the the display mode to be used for the vert-
ical scrollbar: <STRONG>static,</STRONG> <STRONG>dynamic,</STRONG> or <STRONG>none</STRONG>. In static
mode, the scroll bar is displayed at all times.
Dynamic mode displays the scroll bar as required, and
none disables the scroll bar display. The default is
static.
Name: <STRONG>width</STRONG>
Class: <STRONG>Width</STRONG>
Command-Line Switch: <STRONG>-width</STRONG>
Specifies the width of the scrolled canvas widget in
any of the forms acceptable to <STRONG>Tk_GetPixels</STRONG>. The
default height is 30 pixels.
</PRE>
<H2><HR ALIGN=LEFT WIDTH=70% SIZE=3></H2><PRE>
</PRE>
<H2>DESCRIPTION</H2><PRE>
The <STRONG>scrolledcanvas</STRONG> command creates a scrolled canvas with
additional options to manage horizontal and vertical
scrollbars. This includes options to control which
scrollbars are displayed and the method, i.e. statically or
dynamically.
</PRE>
<H2>METHODS</H2><PRE>
The <STRONG>scrolledcanvas</STRONG> command creates a new Tcl command whose
name is <EM>pathName</EM>. This command may be used to invoke vari-
ous operations on the widget. It has the following general
form:
<EM>pathName</EM> <EM>option</EM> ?<EM>arg</EM> <EM>arg</EM> ...?
<EM>Option</EM> and the <EM>arg</EM>s determine the exact behavior of the com-
mand. The following commands are possible for scrolledcan-
vas widgets:
</PRE>
<H2>ASSOCIATED METHODS</H2><PRE>
<STRONG>addtag</STRONG> <STRONG>bbox</STRONG> <STRONG>bind</STRONG> <STRONG>canvasx</STRONG>
<STRONG>canvasy</STRONG> <STRONG>coords</STRONG> <STRONG>create</STRONG> <STRONG>dchars</STRONG>
<STRONG>delete</STRONG> <STRONG>dtag</STRONG> <STRONG>find</STRONG> <STRONG>focus</STRONG>
<STRONG>gettags</STRONG> <STRONG>icursor</STRONG> <STRONG>index</STRONG> <STRONG>insert</STRONG>
<STRONG>itemconfigure</STRONG> <STRONG>lower</STRONG> <STRONG>move</STRONG> <STRONG>postscript</STRONG>
<STRONG>raise</STRONG> <STRONG>scale</STRONG> <STRONG>scan</STRONG> <STRONG>select</STRONG>
<STRONG>type</STRONG> <STRONG>xview</STRONG> <STRONG>yview</STRONG>
See the "canvas" manual entry for details on the associated
methods.
</PRE>
<H2>WIDGET-SPECIFIC METHODS</H2><PRE>
<EM>pathName</EM> <STRONG>cget</STRONG> <EM>option</EM>
Returns the current value of the configuration option
given by <EM>option</EM>. <EM>Option</EM> may have any of the values
accepted by the <STRONG>scrolledcanvas</STRONG> command.
<EM>pathName</EM> <STRONG>childsite</STRONG>
Returns the child site widget path name.
<EM>pathName</EM> <STRONG>configure</STRONG> ?<EM>option</EM>? ?<EM>value</EM> <EM>option</EM> <EM>value</EM> ...?
Query or modify the configuration options of the
widget. If no <EM>option</EM> is specified, returns a list
describing all of the available options for <EM>pathName</EM>
(see <STRONG>Tk_ConfigureInfo</STRONG> for information on the format of
this list). If <EM>option</EM> is specified with no <EM>value</EM>, then
the command returns a list describing the one named
option (this list will be identical to the correspond-
ing sublist of the value returned if no <EM>option</EM> is
specified). If one or more <EM>option</EM> - <EM>value</EM> pairs are
specified, then the command modifies the given widget
option(s) to have the given value(s); in this case the
command returns an empty string. <EM>Option</EM> may have any
of the values accepted by the <STRONG>scrolledcanvas</STRONG> command.
<EM>pathName</EM> <STRONG>justify</STRONG> <EM>direction</EM>
Justifies the canvas contents via the scroll bars in
one of four directions: <STRONG>left</STRONG>, <STRONG>right</STRONG>, <STRONG>top</STRONG>, or <STRONG>bottom</STRONG>.
</PRE>
<H2>COMPONENTS</H2><PRE>
Name: <STRONG>scrCanvas</STRONG>
Class: <STRONG>Canvas</STRONG>
The scrCanvas component is the canvas widget. See the
"canvas" widget manual entry for details on the scrCan-
vas component item.
Name: <STRONG>hSB</STRONG>
Class: <STRONG>Scrollbar</STRONG>
The hSB component is the horizontal scroll bar. See
the "ScrollBar" widget manual entry for details on the
hSB component item.
Name: <STRONG>vSB</STRONG>
Class: <STRONG>Scrollbar</STRONG>
The vSB component is the vertical scroll bar. See the
"ScrollBar" widget manual entry for details on the vSB
component item.
</PRE>
<H2>EXAMPLE</H2><PRE>
scrolledcanvas .sc
.sc create rectangle 100 100 400 400 -fill red
.sc create rectangle 300 300 600 600 -fill green
.sc create rectangle 200 200 500 500 -fill blue
pack .sc -padx 10 -pady 10 -fill both -expand yes
</PRE>
<H2>AUTHOR</H2><PRE>
Mark L. Ulferts
</PRE>
<H2>KEYWORDS</H2><PRE>
scrolledcanvas, canvas, widget
</PRE>
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