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| -rw-r--r-- | doc/photo.n | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/doc/photo.n b/doc/photo.n index d5113c4..f600f3d 100644 --- a/doc/photo.n +++ b/doc/photo.n @@ -9,7 +9,7 @@ '\" Department of Computer Science, '\" Australian National University. '\" -'\" RCS: @(#) $Id: photo.n,v 1.16 2003/07/17 22:57:03 dkf Exp $ +'\" RCS: @(#) $Id: photo.n,v 1.17 2004/06/21 15:07:53 dkf Exp $ '\" .so man.macros .TH photo n 4.0 Tk "Tk Built-In Commands" @@ -36,7 +36,6 @@ in regions where no image data has been supplied or where it has been set transparent by the \fBtransparency set\fR subcommand. .VE 8.4 - .SH "CREATING PHOTOS" .PP Like all images, photos are created using the \fBimage create\fR @@ -93,7 +92,6 @@ Specifies the width of the image, in pixels. This option is useful primarily in situations where the user wishes to build up the contents of the image piece by piece. A value of zero (the default) allows the image to expand or shrink horizontally to fit the data stored in it. - .SH "IMAGE COMMAND" .PP When a photo image is created, Tk also creates a new command @@ -397,7 +395,6 @@ to use of the formats supported by the handler. Note that not all image handlers may support writing transparency data to a file, even where the target image format does. .VE 8.4 - .SH "COLOR ALLOCATION" .PP When a photo image is displayed in a window, the photo image code @@ -427,12 +424,28 @@ each primary color to try to allocate. It can also be used to force the image to be displayed in shades of gray, even on a color display, by giving a single number rather than three numbers separated by slashes. - .SH CREDITS .PP The photo image type was designed and implemented by Paul Mackerras, based on his earlier photo widget and some suggestions from John Ousterhout. +.SH EXAMPLE +Load an image from a file and tile it to the size of a window, which +is useful for producing a tiled background: +.CS +# These lines should be called once +\fBimage create photo\fR untiled -file "theFile.ppm" +\fBimage create photo\fR tiled + +# These lines should be called whenever .someWidget changes +# size; a <Configure> binding is useful here +set width [winfo width .someWidget] +set height [winfo height .someWidget] +tiled \fBcopy\fR untiled \-to 0 0 $width $height \-shrink +.CE + +.SH "SEE ALSO" +image(n) .SH KEYWORDS photo, image, color |