diff options
Diffstat (limited to 'doc/photo.n')
| -rw-r--r-- | doc/photo.n | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/doc/photo.n b/doc/photo.n index b8a0673..ef04d7a 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 1.14.2.1 2003/07/14 22:59:34 dkf Exp $ +'\" RCS: @(#) $Id: photo.n,v 1.14.2.2 2003/07/17 22:53:09 dkf Exp $ '\" .so man.macros .TH photo n 4.0 Tk "Tk Built-In Commands" @@ -245,9 +245,13 @@ Sets pixels in \fI imageName\fR to the data specified in \fIdata\fR. This command first searches the list of image file format handlers for a handler that can interpret the data in \fIdata\fR, and then reads the image encoded within into \fIimageName\fR (the destination image). -Note that \fIdata\fR may also be a single color name if you wish to -fill a rectangular region with that color. The following options may -be specified: +If \fIdata\fR does not match any known format, an attempt to interpret +it as a (top-to-bottom) list of scan-lines is made, with each +scan-line being a (left-to-right) list of pixel colors (see +\fBTk_GetColor\fR for a description of valid colors.) Every scan-line +must be of the same length. Note that when \fIdata\fR is a single +color name, you are instructing Tk to fill a rectangular region with +that color. The following options may be specified: .RS .TP \fB\-format \fIformat-name\fR @@ -257,11 +261,14 @@ Specifically, only image file format handlers whose names begin with format handler to read the data. .TP \fB\-to \fIx1 y1\fR ?\fIx2 y2\fR? -Specifies the coordinates of the top-left corner (\fIx1\fR,\fIy1\fR) of the -region of \fIimageName\fR into which data from \fIfilename\fR are to be -read. The default is (0,0). If \fIx2\fR,\fIy2\fR is given and \fIdata\fR -is one color value, then a region extending to the bottom-right corner -represented by (\fIx2\fR,\fIy2\fR) will be filled with that color. +Specifies the coordinates of the top-left corner (\fIx1\fR,\fIy1\fR) +of the region of \fIimageName\fR into which data from \fIfilename\fR +are to be read. The default is (0,0). If \fIx2\fR,\fIy2\fR is given +and \fIdata\fR is not large enough to cover the rectangle specified by +this option, the image data extracted will be tiled so it covers the +entire destination. Note that if \fIdata\fR specifies a single color +value, then a region extending to the bottom-right corner represented +by (\fIx2\fR,\fIy2\fR) will be filled with that color. .RE .TP \fIimageName \fBread\fR \fIfilename\fR ?\fIoption value(s) ...\fR? |