'\"
|
'\"
|
'\" Copyright (c) 1990-1994 The Regents of the University of California.
|
'\" Copyright (c) 1990-1994 The Regents of the University of California.
|
'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
|
'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
|
'\"
|
'\"
|
'\" See the file "license.terms" for information on usage and redistribution
|
'\" See the file "license.terms" for information on usage and redistribution
|
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
'\"
|
'\"
|
'\" RCS: @(#) $Id: scrollbar.n,v 1.1.1.1 2002-01-16 10:25:49 markom Exp $
|
'\" RCS: @(#) $Id: scrollbar.n,v 1.1.1.1 2002-01-16 10:25:49 markom Exp $
|
'\"
|
'\"
|
.so man.macros
|
.so man.macros
|
.TH scrollbar n 4.1 Tk "Tk Built-In Commands"
|
.TH scrollbar n 4.1 Tk "Tk Built-In Commands"
|
.BS
|
.BS
|
'\" Note: do not modify the .SH NAME line immediately below!
|
'\" Note: do not modify the .SH NAME line immediately below!
|
.SH NAME
|
.SH NAME
|
scrollbar \- Create and manipulate scrollbar widgets
|
scrollbar \- Create and manipulate scrollbar widgets
|
.SH SYNOPSIS
|
.SH SYNOPSIS
|
\fBscrollbar\fR \fIpathName \fR?\fIoptions\fR?
|
\fBscrollbar\fR \fIpathName \fR?\fIoptions\fR?
|
.SO
|
.SO
|
\-activebackground \-highlightbackground \-orient \-takefocus
|
\-activebackground \-highlightbackground \-orient \-takefocus
|
\-background \-highlightcolor \-relief \-troughcolor
|
\-background \-highlightcolor \-relief \-troughcolor
|
\-borderwidth \-highlightthickness \-repeatdelay
|
\-borderwidth \-highlightthickness \-repeatdelay
|
\-cursor \-jump \-repeatinterval
|
\-cursor \-jump \-repeatinterval
|
.SE
|
.SE
|
.SH "WIDGET-SPECIFIC OPTIONS"
|
.SH "WIDGET-SPECIFIC OPTIONS"
|
.OP \-activerelief activeRelief ActiveRelief
|
.OP \-activerelief activeRelief ActiveRelief
|
Specifies the relief to use when displaying the element that is
|
Specifies the relief to use when displaying the element that is
|
active, if any.
|
active, if any.
|
Elements other than the active element are always displayed with
|
Elements other than the active element are always displayed with
|
a raised relief.
|
a raised relief.
|
.OP \-command command Command
|
.OP \-command command Command
|
Specifies the prefix of a Tcl command to invoke to change the view
|
Specifies the prefix of a Tcl command to invoke to change the view
|
in the widget associated with the scrollbar. When a user requests
|
in the widget associated with the scrollbar. When a user requests
|
a view change by manipulating the scrollbar, a Tcl command is
|
a view change by manipulating the scrollbar, a Tcl command is
|
invoked. The actual command consists of this option followed by
|
invoked. The actual command consists of this option followed by
|
additional information as described later. This option almost always has
|
additional information as described later. This option almost always has
|
a value such as \fB.t xview\fR or \fB.t yview\fR, consisting of the
|
a value such as \fB.t xview\fR or \fB.t yview\fR, consisting of the
|
name of a widget and either \fBxview\fR (if the scrollbar is for
|
name of a widget and either \fBxview\fR (if the scrollbar is for
|
horizontal scrolling) or \fByview\fR (for vertical scrolling).
|
horizontal scrolling) or \fByview\fR (for vertical scrolling).
|
All scrollable widgets have \fBxview\fR and \fByview\fR commands
|
All scrollable widgets have \fBxview\fR and \fByview\fR commands
|
that take exactly the additional arguments appended by the scrollbar
|
that take exactly the additional arguments appended by the scrollbar
|
as described in SCROLLING COMMANDS below.
|
as described in SCROLLING COMMANDS below.
|
.OP \-elementborderwidth elementBorderWidth BorderWidth
|
.OP \-elementborderwidth elementBorderWidth BorderWidth
|
Specifies the width of borders drawn around the internal elements
|
Specifies the width of borders drawn around the internal elements
|
of the scrollbar (the two arrows and the slider). The value may
|
of the scrollbar (the two arrows and the slider). The value may
|
have any of the forms acceptable to \fBTk_GetPixels\fR.
|
have any of the forms acceptable to \fBTk_GetPixels\fR.
|
If this value is less than zero, the value of the \fBborderWidth\fR
|
If this value is less than zero, the value of the \fBborderWidth\fR
|
option is used in its place.
|
option is used in its place.
|
.OP \-width width Width
|
.OP \-width width Width
|
Specifies the desired narrow dimension of the scrollbar window,
|
Specifies the desired narrow dimension of the scrollbar window,
|
not including 3-D border, if any. For vertical
|
not including 3-D border, if any. For vertical
|
scrollbars this will be the width and for horizontal scrollbars
|
scrollbars this will be the width and for horizontal scrollbars
|
this will be the height.
|
this will be the height.
|
The value may have any of the forms acceptable to \fBTk_GetPixels\fR.
|
The value may have any of the forms acceptable to \fBTk_GetPixels\fR.
|
.BE
|
.BE
|
|
|
.SH DESCRIPTION
|
.SH DESCRIPTION
|
.PP
|
.PP
|
The \fBscrollbar\fR command creates a new window (given by the
|
The \fBscrollbar\fR command creates a new window (given by the
|
\fIpathName\fR argument) and makes it into a scrollbar widget.
|
\fIpathName\fR argument) and makes it into a scrollbar widget.
|
Additional options, described above, may be specified on the command
|
Additional options, described above, may be specified on the command
|
line or in the option database to configure aspects of the scrollbar
|
line or in the option database to configure aspects of the scrollbar
|
such as its colors, orientation, and relief.
|
such as its colors, orientation, and relief.
|
The \fBscrollbar\fR command returns its \fIpathName\fR argument.
|
The \fBscrollbar\fR command returns its \fIpathName\fR argument.
|
At the time this command is invoked, there must not exist a window
|
At the time this command is invoked, there must not exist a window
|
named \fIpathName\fR, but \fIpathName\fR's parent must exist.
|
named \fIpathName\fR, but \fIpathName\fR's parent must exist.
|
.PP
|
.PP
|
A scrollbar is a widget that displays two arrows, one at each end of
|
A scrollbar is a widget that displays two arrows, one at each end of
|
the scrollbar, and a \fIslider\fR in the middle portion of the
|
the scrollbar, and a \fIslider\fR in the middle portion of the
|
scrollbar.
|
scrollbar.
|
It provides information about what is visible in an \fIassociated window\fR
|
It provides information about what is visible in an \fIassociated window\fR
|
that displays an document of some sort (such as a file being edited or
|
that displays an document of some sort (such as a file being edited or
|
a drawing).
|
a drawing).
|
The position and size of the slider indicate which portion of the
|
The position and size of the slider indicate which portion of the
|
document is visible in the associated window. For example, if the
|
document is visible in the associated window. For example, if the
|
slider in a vertical scrollbar covers the top third of the area
|
slider in a vertical scrollbar covers the top third of the area
|
between the two arrows, it means that the associated window displays
|
between the two arrows, it means that the associated window displays
|
the top third of its document.
|
the top third of its document.
|
.PP
|
.PP
|
Scrollbars can be used to adjust the view in the associated window
|
Scrollbars can be used to adjust the view in the associated window
|
by clicking or dragging with the mouse. See the BINDINGS section
|
by clicking or dragging with the mouse. See the BINDINGS section
|
below for details.
|
below for details.
|
|
|
.SH "ELEMENTS"
|
.SH "ELEMENTS"
|
.PP
|
.PP
|
A scrollbar displays five elements, which are referred to in the
|
A scrollbar displays five elements, which are referred to in the
|
widget commands for the scrollbar:
|
widget commands for the scrollbar:
|
.TP 10
|
.TP 10
|
\fBarrow1\fR
|
\fBarrow1\fR
|
The top or left arrow in the scrollbar.
|
The top or left arrow in the scrollbar.
|
.TP 10
|
.TP 10
|
\fBtrough1\fR
|
\fBtrough1\fR
|
The region between the slider and \fBarrow1\fR.
|
The region between the slider and \fBarrow1\fR.
|
.TP 10
|
.TP 10
|
\fBslider\fR
|
\fBslider\fR
|
The rectangle that indicates what is visible in the associated widget.
|
The rectangle that indicates what is visible in the associated widget.
|
.TP 10
|
.TP 10
|
\fBtrough2\fR
|
\fBtrough2\fR
|
The region between the slider and \fBarrow2\fR.
|
The region between the slider and \fBarrow2\fR.
|
.TP 10
|
.TP 10
|
\fBarrow2\fR
|
\fBarrow2\fR
|
The bottom or right arrow in the scrollbar.
|
The bottom or right arrow in the scrollbar.
|
|
|
.SH "WIDGET COMMAND"
|
.SH "WIDGET COMMAND"
|
.PP
|
.PP
|
The \fBscrollbar\fR command creates a new Tcl command whose
|
The \fBscrollbar\fR command creates a new Tcl command whose
|
name is \fIpathName\fR. This
|
name is \fIpathName\fR. This
|
command may be used to invoke various
|
command may be used to invoke various
|
operations on the widget. It has the following general form:
|
operations on the widget. It has the following general form:
|
.CS
|
.CS
|
\fIpathName option \fR?\fIarg arg ...\fR?
|
\fIpathName option \fR?\fIarg arg ...\fR?
|
.CE
|
.CE
|
\fIOption\fR and the \fIarg\fRs
|
\fIOption\fR and the \fIarg\fRs
|
determine the exact behavior of the command. The following
|
determine the exact behavior of the command. The following
|
commands are possible for scrollbar widgets:
|
commands are possible for scrollbar widgets:
|
.TP
|
.TP
|
\fIpathName \fBactivate \fR?\fIelement\fR?
|
\fIpathName \fBactivate \fR?\fIelement\fR?
|
Marks the element indicated by \fIelement\fR as active, which
|
Marks the element indicated by \fIelement\fR as active, which
|
causes it to be displayed as specified by the \fBactiveBackground\fR
|
causes it to be displayed as specified by the \fBactiveBackground\fR
|
and \fBactiveRelief\fR options.
|
and \fBactiveRelief\fR options.
|
The only element values understood by this command are \fBarrow1\fR,
|
The only element values understood by this command are \fBarrow1\fR,
|
\fBslider\fR, or \fBarrow2\fR.
|
\fBslider\fR, or \fBarrow2\fR.
|
If any other value is specified then no element of the scrollbar
|
If any other value is specified then no element of the scrollbar
|
will be active.
|
will be active.
|
If \fIelement\fR is not specified, the command returns
|
If \fIelement\fR is not specified, the command returns
|
the name of the element that is currently active, or an empty string
|
the name of the element that is currently active, or an empty string
|
if no element is active.
|
if no element is active.
|
.TP
|
.TP
|
\fIpathName \fBcget\fR \fIoption\fR
|
\fIpathName \fBcget\fR \fIoption\fR
|
Returns the current value of the configuration option given
|
Returns the current value of the configuration option given
|
by \fIoption\fR.
|
by \fIoption\fR.
|
\fIOption\fR may have any of the values accepted by the \fBscrollbar\fR
|
\fIOption\fR may have any of the values accepted by the \fBscrollbar\fR
|
command.
|
command.
|
.TP
|
.TP
|
\fIpathName \fBconfigure\fR ?\fIoption\fR? ?\fIvalue option value ...\fR?
|
\fIpathName \fBconfigure\fR ?\fIoption\fR? ?\fIvalue option value ...\fR?
|
Query or modify the configuration options of the widget.
|
Query or modify the configuration options of the widget.
|
If no \fIoption\fR is specified, returns a list describing all of
|
If no \fIoption\fR is specified, returns a list describing all of
|
the available options for \fIpathName\fR (see \fBTk_ConfigureInfo\fR for
|
the available options for \fIpathName\fR (see \fBTk_ConfigureInfo\fR for
|
information on the format of this list). If \fIoption\fR is specified
|
information on the format of this list). If \fIoption\fR is specified
|
with no \fIvalue\fR, then the command returns a list describing the
|
with no \fIvalue\fR, then the command returns a list describing the
|
one named option (this list will be identical to the corresponding
|
one named option (this list will be identical to the corresponding
|
sublist of the value returned if no \fIoption\fR is specified). If
|
sublist of the value returned if no \fIoption\fR is specified). If
|
one or more \fIoption\-value\fR pairs are specified, then the command
|
one or more \fIoption\-value\fR pairs are specified, then the command
|
modifies the given widget option(s) to have the given value(s); in
|
modifies the given widget option(s) to have the given value(s); in
|
this case the command returns an empty string.
|
this case the command returns an empty string.
|
\fIOption\fR may have any of the values accepted by the \fBscrollbar\fR
|
\fIOption\fR may have any of the values accepted by the \fBscrollbar\fR
|
command.
|
command.
|
.TP
|
.TP
|
\fIpathName \fBdelta \fIdeltaX deltaY\fR
|
\fIpathName \fBdelta \fIdeltaX deltaY\fR
|
Returns a real number indicating the fractional change in
|
Returns a real number indicating the fractional change in
|
the scrollbar setting that corresponds to a given change
|
the scrollbar setting that corresponds to a given change
|
in slider position. For example, if the scrollbar is horizontal,
|
in slider position. For example, if the scrollbar is horizontal,
|
the result indicates how much the scrollbar setting must change
|
the result indicates how much the scrollbar setting must change
|
to move the slider \fIdeltaX\fR pixels to the right (\fIdeltaY\fR is
|
to move the slider \fIdeltaX\fR pixels to the right (\fIdeltaY\fR is
|
ignored in this case).
|
ignored in this case).
|
If the scrollbar is vertical, the result indicates how much the
|
If the scrollbar is vertical, the result indicates how much the
|
scrollbar setting must change to move the slider \fIdeltaY\fR pixels
|
scrollbar setting must change to move the slider \fIdeltaY\fR pixels
|
down. The arguments and the result may be zero or negative.
|
down. The arguments and the result may be zero or negative.
|
.TP
|
.TP
|
\fIpathName \fBfraction \fIx y\fR
|
\fIpathName \fBfraction \fIx y\fR
|
Returns a real number between 0 and 1 indicating where the point
|
Returns a real number between 0 and 1 indicating where the point
|
given by \fIx\fR and \fIy\fR lies in the trough area of the scrollbar.
|
given by \fIx\fR and \fIy\fR lies in the trough area of the scrollbar.
|
The value 0 corresponds to the top or left of the trough, the
|
The value 0 corresponds to the top or left of the trough, the
|
value 1 corresponds to the bottom or right, 0.5 corresponds to
|
value 1 corresponds to the bottom or right, 0.5 corresponds to
|
the middle, and so on.
|
the middle, and so on.
|
\fIX\fR and \fIy\fR must be pixel coordinates relative to the scrollbar
|
\fIX\fR and \fIy\fR must be pixel coordinates relative to the scrollbar
|
widget.
|
widget.
|
If \fIx\fR and \fIy\fR refer to a point outside the trough, the closest
|
If \fIx\fR and \fIy\fR refer to a point outside the trough, the closest
|
point in the trough is used.
|
point in the trough is used.
|
.TP
|
.TP
|
\fIpathName \fBget\fR
|
\fIpathName \fBget\fR
|
Returns the scrollbar settings in the form of a list whose
|
Returns the scrollbar settings in the form of a list whose
|
elements are the arguments to the most recent \fBset\fR widget command.
|
elements are the arguments to the most recent \fBset\fR widget command.
|
.TP
|
.TP
|
\fIpathName \fBidentify\fR \fIx y\fR
|
\fIpathName \fBidentify\fR \fIx y\fR
|
Returns the name of the element under the point given by \fIx\fR and
|
Returns the name of the element under the point given by \fIx\fR and
|
\fIy\fR (such as \fBarrow1\fR), or an empty string if the point does
|
\fIy\fR (such as \fBarrow1\fR), or an empty string if the point does
|
not lie in any element of the scrollbar.
|
not lie in any element of the scrollbar.
|
\fIX\fR and \fIy\fR must be pixel coordinates relative to the scrollbar
|
\fIX\fR and \fIy\fR must be pixel coordinates relative to the scrollbar
|
widget.
|
widget.
|
.TP
|
.TP
|
\fIpathName \fBset\fR \fIfirst last\fR
|
\fIpathName \fBset\fR \fIfirst last\fR
|
This command is invoked by the scrollbar's associated widget to
|
This command is invoked by the scrollbar's associated widget to
|
tell the scrollbar about the current view in the widget.
|
tell the scrollbar about the current view in the widget.
|
The command takes two arguments, each of which is a real fraction
|
The command takes two arguments, each of which is a real fraction
|
between 0 and 1.
|
between 0 and 1.
|
The fractions describe the range of the document that is visible in
|
The fractions describe the range of the document that is visible in
|
the associated widget.
|
the associated widget.
|
For example, if \fIfirst\fR is 0.2 and \fIlast\fR is 0.4, it means
|
For example, if \fIfirst\fR is 0.2 and \fIlast\fR is 0.4, it means
|
that the first part of the document visible in the window is 20%
|
that the first part of the document visible in the window is 20%
|
of the way through the document, and the last visible part is 40%
|
of the way through the document, and the last visible part is 40%
|
of the way through.
|
of the way through.
|
|
|
.SH "SCROLLING COMMANDS"
|
.SH "SCROLLING COMMANDS"
|
.PP
|
.PP
|
When the user interacts with the scrollbar, for example by dragging
|
When the user interacts with the scrollbar, for example by dragging
|
the slider, the scrollbar notifies the associated widget that it
|
the slider, the scrollbar notifies the associated widget that it
|
must change its view.
|
must change its view.
|
The scrollbar makes the notification by evaluating a Tcl command
|
The scrollbar makes the notification by evaluating a Tcl command
|
generated from the scrollbar's \fB\-command\fR option.
|
generated from the scrollbar's \fB\-command\fR option.
|
The command may take any of the following forms.
|
The command may take any of the following forms.
|
In each case, \fIprefix\fR is the contents of the
|
In each case, \fIprefix\fR is the contents of the
|
\fB\-command\fR option, which usually has a form like \fB.t yview\fR
|
\fB\-command\fR option, which usually has a form like \fB.t yview\fR
|
.TP
|
.TP
|
\fIprefix \fBmoveto \fIfraction\fR
|
\fIprefix \fBmoveto \fIfraction\fR
|
\fIFraction\fR is a real number between 0 and 1.
|
\fIFraction\fR is a real number between 0 and 1.
|
The widget should adjust its view so that the point given
|
The widget should adjust its view so that the point given
|
by \fIfraction\fR appears at the beginning of the widget.
|
by \fIfraction\fR appears at the beginning of the widget.
|
If \fIfraction\fR is 0 it refers to the beginning of the
|
If \fIfraction\fR is 0 it refers to the beginning of the
|
document. 1.0 refers to the end of the document, 0.333
|
document. 1.0 refers to the end of the document, 0.333
|
refers to a point one-third of the way through the document,
|
refers to a point one-third of the way through the document,
|
and so on.
|
and so on.
|
.TP
|
.TP
|
\fIprefix \fBscroll \fInumber \fBunits\fR
|
\fIprefix \fBscroll \fInumber \fBunits\fR
|
The widget should adjust its view by \fInumber\fR units.
|
The widget should adjust its view by \fInumber\fR units.
|
The units are defined in whatever way makes sense for the widget,
|
The units are defined in whatever way makes sense for the widget,
|
such as characters or lines in a text widget.
|
such as characters or lines in a text widget.
|
\fINumber\fR is either 1, which means one unit should scroll off
|
\fINumber\fR is either 1, which means one unit should scroll off
|
the top or left of the window, or \-1, which means that one unit
|
the top or left of the window, or \-1, which means that one unit
|
should scroll off the bottom or right of the window.
|
should scroll off the bottom or right of the window.
|
.TP
|
.TP
|
\fIprefix \fBscroll \fInumber \fBpages\fR
|
\fIprefix \fBscroll \fInumber \fBpages\fR
|
The widget should adjust its view by \fInumber\fR pages.
|
The widget should adjust its view by \fInumber\fR pages.
|
It is up to the widget to define the meaning of a page; typically
|
It is up to the widget to define the meaning of a page; typically
|
it is slightly less than what fits in the window, so that there
|
it is slightly less than what fits in the window, so that there
|
is a slight overlap between the old and new views.
|
is a slight overlap between the old and new views.
|
\fINumber\fR is either 1, which means the next page should
|
\fINumber\fR is either 1, which means the next page should
|
become visible, or \-1, which means that the previous page should
|
become visible, or \-1, which means that the previous page should
|
become visible.
|
become visible.
|
|
|
.SH "OLD COMMAND SYNTAX"
|
.SH "OLD COMMAND SYNTAX"
|
.PP
|
.PP
|
In versions of Tk before 4.0, the \fBset\fR and \fBget\fR widget
|
In versions of Tk before 4.0, the \fBset\fR and \fBget\fR widget
|
commands used a different form.
|
commands used a different form.
|
This form is still supported for backward compatibility, but it
|
This form is still supported for backward compatibility, but it
|
is deprecated.
|
is deprecated.
|
In the old command syntax, the \fBset\fR widget command has the
|
In the old command syntax, the \fBset\fR widget command has the
|
following form:
|
following form:
|
.TP
|
.TP
|
\fIpathName \fBset\fR \fItotalUnits windowUnits firstUnit lastUnit\fR
|
\fIpathName \fBset\fR \fItotalUnits windowUnits firstUnit lastUnit\fR
|
In this form the arguments are all integers.
|
In this form the arguments are all integers.
|
\fITotalUnits\fR gives the total size of the object being displayed in the
|
\fITotalUnits\fR gives the total size of the object being displayed in the
|
associated widget. The meaning of one unit depends on the associated
|
associated widget. The meaning of one unit depends on the associated
|
widget; for example, in a text editor widget units might
|
widget; for example, in a text editor widget units might
|
correspond to lines of
|
correspond to lines of
|
text. \fIWindowUnits\fR indicates the total number of units that
|
text. \fIWindowUnits\fR indicates the total number of units that
|
can fit in the associated window at one time. \fIFirstUnit\fR
|
can fit in the associated window at one time. \fIFirstUnit\fR
|
and \fIlastUnit\fR give the indices of the first and last units
|
and \fIlastUnit\fR give the indices of the first and last units
|
currently visible in the associated window (zero corresponds to the
|
currently visible in the associated window (zero corresponds to the
|
first unit of the object).
|
first unit of the object).
|
.LP
|
.LP
|
Under the old syntax the \fBget\fR widget command returns a list
|
Under the old syntax the \fBget\fR widget command returns a list
|
of four integers, consisting of the \fItotalUnits\fR, \fIwindowUnits\fR,
|
of four integers, consisting of the \fItotalUnits\fR, \fIwindowUnits\fR,
|
\fIfirstUnit\fR, and \fIlastUnit\fR values from the last \fBset\fR
|
\fIfirstUnit\fR, and \fIlastUnit\fR values from the last \fBset\fR
|
widget command.
|
widget command.
|
.PP
|
.PP
|
The commands generated by scrollbars also have a different form
|
The commands generated by scrollbars also have a different form
|
when the old syntax is being used:
|
when the old syntax is being used:
|
.TP
|
.TP
|
\fIprefix\fR \fIunit\fR
|
\fIprefix\fR \fIunit\fR
|
\fIUnit\fR is an integer that indicates what should appear at
|
\fIUnit\fR is an integer that indicates what should appear at
|
the top or left of the associated widget's window.
|
the top or left of the associated widget's window.
|
It has the same meaning as the \fIfirstUnit\fR and \fIlastUnit\fR
|
It has the same meaning as the \fIfirstUnit\fR and \fIlastUnit\fR
|
arguments to the \fBset\fR widget command.
|
arguments to the \fBset\fR widget command.
|
.LP
|
.LP
|
The most recent \fBset\fR widget command determines whether or not
|
The most recent \fBset\fR widget command determines whether or not
|
to use the old syntax.
|
to use the old syntax.
|
If it is given two real arguments then the new syntax will be
|
If it is given two real arguments then the new syntax will be
|
used in the future, and if it is given four integer arguments then
|
used in the future, and if it is given four integer arguments then
|
the old syntax will be used.
|
the old syntax will be used.
|
|
|
.SH BINDINGS
|
.SH BINDINGS
|
Tk automatically creates class bindings for scrollbars that give them
|
Tk automatically creates class bindings for scrollbars that give them
|
the following default behavior.
|
the following default behavior.
|
If the behavior is different for vertical and horizontal scrollbars,
|
If the behavior is different for vertical and horizontal scrollbars,
|
the horizontal behavior is described in parentheses.
|
the horizontal behavior is described in parentheses.
|
|
|
.IP [1]
|
.IP [1]
|
Pressing button 1 over \fBarrow1\fR causes the view in the
|
Pressing button 1 over \fBarrow1\fR causes the view in the
|
associated widget to shift up (left) by one unit so that the
|
associated widget to shift up (left) by one unit so that the
|
document appears to move down (right) one unit.
|
document appears to move down (right) one unit.
|
If the button is held down, the action auto-repeats.
|
If the button is held down, the action auto-repeats.
|
.IP [2]
|
.IP [2]
|
Pressing button 1 over \fBtrough1\fR causes the view in the
|
Pressing button 1 over \fBtrough1\fR causes the view in the
|
associated widget to shift up (left) by one screenful so that the
|
associated widget to shift up (left) by one screenful so that the
|
document appears to move down (right) one screenful.
|
document appears to move down (right) one screenful.
|
If the button is held down, the action auto-repeats.
|
If the button is held down, the action auto-repeats.
|
.IP [3]
|
.IP [3]
|
Pressing button 1 over the slider and dragging causes the view
|
Pressing button 1 over the slider and dragging causes the view
|
to drag with the slider.
|
to drag with the slider.
|
If the \fBjump\fR option is true, then the view doesn't drag along
|
If the \fBjump\fR option is true, then the view doesn't drag along
|
with the slider; it changes only when the mouse button is released.
|
with the slider; it changes only when the mouse button is released.
|
.IP [4]
|
.IP [4]
|
Pressing button 1 over \fBtrough2\fR causes the view in the
|
Pressing button 1 over \fBtrough2\fR causes the view in the
|
associated widget to shift down (right) by one screenful so that the
|
associated widget to shift down (right) by one screenful so that the
|
document appears to move up (left) one screenful.
|
document appears to move up (left) one screenful.
|
If the button is held down, the action auto-repeats.
|
If the button is held down, the action auto-repeats.
|
.IP [5]
|
.IP [5]
|
Pressing button 1 over \fBarrow2\fR causes the view in the
|
Pressing button 1 over \fBarrow2\fR causes the view in the
|
associated widget to shift down (right) by one unit so that the
|
associated widget to shift down (right) by one unit so that the
|
document appears to move up (left) one unit.
|
document appears to move up (left) one unit.
|
If the button is held down, the action auto-repeats.
|
If the button is held down, the action auto-repeats.
|
.IP [6]
|
.IP [6]
|
If button 2 is pressed over the trough or the slider, it sets
|
If button 2 is pressed over the trough or the slider, it sets
|
the view to correspond to the mouse position; dragging the
|
the view to correspond to the mouse position; dragging the
|
mouse with button 2 down causes the view to drag with the mouse.
|
mouse with button 2 down causes the view to drag with the mouse.
|
If button 2 is pressed over one of the arrows, it causes the
|
If button 2 is pressed over one of the arrows, it causes the
|
same behavior as pressing button 1.
|
same behavior as pressing button 1.
|
.IP [7]
|
.IP [7]
|
If button 1 is pressed with the Control key down, then if the
|
If button 1 is pressed with the Control key down, then if the
|
mouse is over \fBarrow1\fR or \fBtrough1\fR the view changes
|
mouse is over \fBarrow1\fR or \fBtrough1\fR the view changes
|
to the very top (left) of the document; if the mouse is over
|
to the very top (left) of the document; if the mouse is over
|
\fBarrow2\fR or \fBtrough2\fR the view changes
|
\fBarrow2\fR or \fBtrough2\fR the view changes
|
to the very bottom (right) of the document; if the mouse is
|
to the very bottom (right) of the document; if the mouse is
|
anywhere else then the button press has no effect.
|
anywhere else then the button press has no effect.
|
.IP [8]
|
.IP [8]
|
In vertical scrollbars the Up and Down keys have the same behavior
|
In vertical scrollbars the Up and Down keys have the same behavior
|
as mouse clicks over \fBarrow1\fR and \fBarrow2\fR, respectively.
|
as mouse clicks over \fBarrow1\fR and \fBarrow2\fR, respectively.
|
In horizontal scrollbars these keys have no effect.
|
In horizontal scrollbars these keys have no effect.
|
.IP [9]
|
.IP [9]
|
In vertical scrollbars Control-Up and Control-Down have the same
|
In vertical scrollbars Control-Up and Control-Down have the same
|
behavior as mouse clicks over \fBtrough1\fR and \fBtrough2\fR, respectively.
|
behavior as mouse clicks over \fBtrough1\fR and \fBtrough2\fR, respectively.
|
In horizontal scrollbars these keys have no effect.
|
In horizontal scrollbars these keys have no effect.
|
.IP [10]
|
.IP [10]
|
In horizontal scrollbars the Up and Down keys have the same behavior
|
In horizontal scrollbars the Up and Down keys have the same behavior
|
as mouse clicks over \fBarrow1\fR and \fBarrow2\fR, respectively.
|
as mouse clicks over \fBarrow1\fR and \fBarrow2\fR, respectively.
|
In vertical scrollbars these keys have no effect.
|
In vertical scrollbars these keys have no effect.
|
.IP [11]
|
.IP [11]
|
In horizontal scrollbars Control-Up and Control-Down have the same
|
In horizontal scrollbars Control-Up and Control-Down have the same
|
behavior as mouse clicks over \fBtrough1\fR and \fBtrough2\fR, respectively.
|
behavior as mouse clicks over \fBtrough1\fR and \fBtrough2\fR, respectively.
|
In vertical scrollbars these keys have no effect.
|
In vertical scrollbars these keys have no effect.
|
.IP [12]
|
.IP [12]
|
The Prior and Next keys have the same behavior
|
The Prior and Next keys have the same behavior
|
as mouse clicks over \fBtrough1\fR and \fBtrough2\fR, respectively.
|
as mouse clicks over \fBtrough1\fR and \fBtrough2\fR, respectively.
|
.IP [13]
|
.IP [13]
|
The Home key adjusts the view to the top (left edge) of the document.
|
The Home key adjusts the view to the top (left edge) of the document.
|
.IP [14]
|
.IP [14]
|
The End key adjusts the view to the bottom (right edge) of the document.
|
The End key adjusts the view to the bottom (right edge) of the document.
|
|
|
.SH KEYWORDS
|
.SH KEYWORDS
|
scrollbar, widget
|
scrollbar, widget
|
|
|
