Perl/Tk Pocket Reference

76 Perl/Tk Pocket Reference

-foreground => color

Set foreground color for bitmap.

-maskdata => string

Specify contents of mask in X11 bitmap format.

-maskfile => pathName

Gives name of file whose contents define the mask in X11

bitmap format.

The Photo Image Method

-data => string

Specifies contents of image in a supported format.

-format => formatName

Specifies format for data specified with the

-data or -

file options.

-file => pathName

Gives name of file whose contents define the image in

supported format.

-height => number

Specifies pixel height of the image.

-palette => paletteSpec

Sets the resolution of the color cube to be allocated for

image.

-width => number

Specifies pixel width of the image.

$image->blank;

Blanks the image so it has no data and is completely trans-

parent.

$image->copy(sourceImage ?, -option => value ... ?);

Copies a region from sourceImage to

$image using given

options.

-from => x1, y1, x2, y2

Specifies rectangular region of source image to be

copied.

12. Images 77

-to => x1, y1, x2, y2

Specifies rectangular region of target image to be

affected.

-shrink

Clips target image so copied region is in bottom-right

corner.

-zoom => x, y

Magnifies source region by x, y in respective direction.

-subsample => x, y

Reduces source image by using only every xyth pixel.

$image->get(x, y);

Returns RGB value of pixel at coords ...