PANEL(9) PANEL(9)
NAME
panel - embedded graphics
SYNOPSIS
panel pathName ?options?
STANDARD OPTIONS
-anchor -borderwidth -background -relief
WIDGET-SPECIFIC OPTIONS
-height dist
Specifies a desired height for the panel. If this
option isn't specified, the panel's desired height is
computed from the image and mask images. If these are
replicated, the default is zero.
-width dist
Specifies a desired width for the panel. If this
option isn't specified, the panel's desired height is
computed from the image and mask images. If these are
replicated, the default is zero.
DESCRIPTION
The panel command creates a new window (given by the path-
Name argument) and makes it into a panel widget. Additional
options, described above, may be specified on the command
line to configure aspects of the panel such as its back-
ground colour and 3-D relief. The panel command returns its
pathName argument. At the time this command is invoked,
there must not exist a window named pathName.
A panel is a widget that displays arbitrary graphics drawn
outside of Tk. An application is free to use any image or
mask that it chooses to create; the panel will display the
contents of the image through the mask (see draw(2)).
A panel widget will not display anything until its image has
been set using putimage (see tk(2)).
WIDGET COMMAND
The panel command creates a new Tk command whose name is
pathName. This command may be used to invoke various opera-
tions on the widget: It has the following general form:
pathName option ?arg arg ...?
Option and the args determine the exact behaviour of the
command. The following commands are possible for panel wid-
gets:
pathName cget option
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PANEL(9) PANEL(9)
Returns the current value of the configuration option
given by option. Option may have any of the values
accepted by the panel function.
pathName configure ?option? ?value option value ...?
Query or modify the configuration options of the wid-
get. If no option is specified, returns a list of all
of the available options for pathName. If one or more
option-value pairs are specified, then the command mod-
ifies the given widget option(s) to have the given
value(s); in this case the command returns an empty
string. Option may have any of the values accepted by
the panel function
pathName dirty ?minx miny maxx maxy?
Mark the area inside the given rectangle ((minx, miny),
(maxx, maxy)) to be flushed to the screen. If the rect-
angle is not given, the whole area will be marked. The
coordinates are relative to the image's origin.
pathName origin ?x y?
Set the point within the image that will be displayed
at the top left of the panel's rectangle. If the area
allocated to the panel is more than the area drawn by
the image, the ``top left'' will positioned with
respect to the value of the -anchor option. If the
point is not given, the current origin is returned.
pathName panelx ?screenx?
Given a screen x-coordinate, screenx, this command
returns the image x-coordinate displayed at that loca-
tion.
pathName panely ?screeny?
Given a screen y-coordinate, screeny, this command
returns the image y-coordinate displayed at that loca-
tion.
pathName screenx ?panelx?
Given an image x-coordinate, panelx, this command
returns the equivalent screen x-coordinate.
pathName screeny ?panely?
Given an image y-coordinate, panely, this command
returns the equivalent screen y-coordinate.
BINDINGS
When a new panel is created, it has no default event bind-
ings.
SEE ALSO
draw(2), tk(2), options(9), types(9)
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