Advanced Perl Programming

Canvas

Table A.5 shows the properties of each item that is supported by the canvas widget and configured by using the widget’s itemconfigure method. The widget itself has no particularly interesting properties. However, the methods shown in the latter half of the table are the widget’s, even if they mostly apply to the individual canvas item types. Please note that all methods that take an item ID as a parameter can also take a preconfigured tag name as a parameter.

Table A-5. Canvas Class

Item Properties	Description
Common properties
fill, outline	Colors for filling the region and outline.
tags	A list of strings. These are tags applicable to this item. You can add more to this list with addtag.
stipple, outlinestipple	Draw the interior or outline with a stipple pattern. The bitmap value specifies the stipple pattern.
width	Width of the outline.
Arc
start, extent	Angles in degrees, moving counterclockwise.
style	pieslice, chord, arc. In the last case, the fill option is ignored.
Bitmap
anchor	As in widget properties shown earlier.
bitmap	The bitmap to display.
background, foreground	Colors for each of the bitmap pixels.
Image
anchor	As in widget properties shown earlier.
image	The image to display.
Line
arrow	First, last, both, or none. The end at which an arrow should be drawn.
arrowshape	A reference to a list containing three dimensions a, b, and c like this:
fill	Color.
smooth, splinesteps	If 1, draws a bezier curve instead ...