Provided by: perl-tk_804.036-1build1_amd64 
NAME
Tk::Compound - Create multi-line compound images.
SYNOPSIS
use Tk::Compound;
$image = $widget->Compound(name,options);
$image->Line(options);
$image->Text(options);
$image->Bitmap(options);
$image->Image(options);
$image->Space(options);
DESCRIPTION
Compound image types can be used to create images that consists of multiple horizontal
lines; each line is composed of a series of items (texts, bitmaps, images or spaces)
arranged from left to right. Compound images are mainly used to embed complex drawings
into widgets that support the -image option. As shown in the EXAMPLE section below, a
compound image can be used to display a bitmap and a text string simutaneously in a Tk
Button widget.
Compound images can only be used on windows on the same display as, and with the same
pixel depth and visual as the $widget used to create them.
CREATING COMPOUND IMAGES
Compounds are created using $widget->Compound. Compounds support the following options:
-background => color
Specifies the background color of the compound image. This color is also used as the
default background color for the bitmap items in the compound image.
-borderwidth => pixels
Specifies a non-negative value indicating the width of the 3-D border drawn around the
compound image.
-font => font
Specifies the default font for the text items in the compound image.
-foreground => color
Specifies the default foreground color for the bitmap and text items in the compound
image.
-padx => value
Specifies a non-negative value indicating how much extra space to request for the
compound image in the X-direction. The value may have any of the forms acceptable to
Tk_GetPixels(3).
-pady => value
Specifies a non-negative value indicating how much extra space to request for the
compound image in the Y-direction.
-relief => value
Specifies the 3-D effect desired for the background of the compound image. Acceptable
values are raised, sunken, flat, ridge, and groove.
-showbackground => value
Specifies whether the background and the 3D borders should be drawn. Must be a valid
boolean value. By default the background is not drawn and the compound image appears
to have a transparent background.
IMAGE COMMAND
When a compound image is created, Tk also creates a new object. This object supports the
configure and cget methods described in Tk::options which can be used to enquire and
modify the options described above.
The object also supports the following methods:
$compound->Line?(option = value ...>)?
Creates a new line at the bottom of the compound image. Lines support the following
options:
-anchor value
Specifies how the line should be aligned along the horizontal axis. When the
values are w, sw or nw, the line is aligned to the left. When the values are c, s
or n, the line is aligned to the middle. When the values are e, se or ne, the
line is aligned to the right.
-padx => value
Specifies a non-negative value indicating how much extra space to request for this
line in the X-direction.
$compound->Itemtype?(option = value ...>)?
Creates a new item of the type Itemtype at the end of the last line of the compound
image. All types of items support these following common options:
-anchor value
Specifies how the item should be aligned along the vertical axis. When the values
are n, nw or ne, the item is aligned to the top of the line. When the values are
c, w or e, the item is aligned to the middle of the line. When the values are s,
se or sw, the item is aligned to the bottom of the line.
-padx => value
Specifies a non-negative value indicating how much extra space to request for this
item in the X-direction.
-pady => value
Specifies a non-negative value indicating how much extra space to request for this
item in the Y-direction.
item-type can be any of the following:
$compound->Bitmap?(option = value ...>)?
Creates a new bitmap item of at the end of the last line of the compound image.
Additional options accepted by the bitmap type are:
-background => color
Specifies the background color of the bitmap item.
-bitmap => name
Specifies a bitmap to display in this item, in any of the forms acceptable to
Tk_GetBitmap(3).
-foreground => color
Specifies the foreground color of the bitmap item.
$compound->Image?(option = value ...>)?
Creates a new image item of at the end of the last line of the compound image.
Additional options accepted by the image type are:
-image => name
Specifies an image to display in this item. name must have been created with the
image create command.
$compound->Space?(option = value ...>)?
Creates a new space item of at the end of the last line of the compound image. Space
items do not display anything. They just acts as space holders that add additional
spaces between items inside a compound image. Additional options accepted by the image
type are:
-width => value
Specifies the width of this space. The value may have any of the forms acceptable
to Tk_GetPixels(3).
-height => value
Specifies the height of this space. The value may have any of the forms acceptable
to Tk_GetPixels(3).
$compound->Text?(option = value ...>)?
Creates a new text item of at the end of the last line of the compound image.
Additional options accepted by the text type are:
-background => color
Specifies the background color of the text item.
-font => name
Specifies the font to be used for this text item.
-foreground => color
Specifies the foreground color of the text item.
-justify value
When there are multiple lines of text displayed in a text item, this option
determines how the lines line up with each other. value must be one of left,
center, or right. Left means that the lines' left edges all line up, center means
that the lines' centers are aligned, and right means that the lines' right edges
line up.
-text => string
Specifies a text string to display in this text item.
-underline value
Specifies the integer index of a character to underline in the text item. 0
corresponds to the first character of the text displayed in the text item, 1 to
the next character, and so on.
-wraplength value
This option specifies the maximum line length of the label string on this text
item. If the line length of the label string exceeds this length, it is wrapped
onto the next line, so that no line is longer than the specified length. The value
may be specified in any of the standard forms for screen distances. If this value
is less than or equal to 0 then no wrapping is done: lines will break only at
newline characters in the text.
EXAMPLE
The following example creates a compound image with a bitmap and a text string and places
this image into a Button(n) widget. Notice that the image must be created using the widget
that it resides in.
my $b = $parent->Button;
my $c = $b->Compound;
$b->configure(-image => $c);
$c->Line;
$c->Bitmap(-bitmap => 'warning');
$c->Space(-width => 8);
$c->Text(-text => "Warning", -underline => 0);
$b->pack;
KEYWORDS
image(n), Tix(n)