Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / zenity-0.5.7 / zenity_scale.m

diff --git a/octave_packages/zenity-0.5.7/zenity_scale.m b/octave_packages/zenity-0.5.7/zenity_scale.m
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+## Copyright (C) 2006 Muthiah Annamalai
+## 
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2 of the License, or
+## (at your option) any later version.
+## 
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+## 
+## You should have received a copy of the GNU General Public License
+## along with this program; If not, see <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn  {Function File} @var{output} = zenity_scale(@var{title},@var{text}, @var{value}, @var{minval}, @var{maxval},@var{step},@var{print_partial},@var{hideval})
+## Displays a selection scale (range widget) window.
+## Allows the user to choose a parameter within the set ranges, and sets
+## default value, and step sizes.
+## The variable @var{title} sets the title of the window.
+## The variable @var{text} sets the label of the range widget.
+## The other arguments @var{value}, @var{minval},@var{maxval},
+## @var{step}, @var{print_partial}, and @var{hideval}.
+## The range widget can be used to select anywhere from @var{minval} to
+## @var{maxval} values in increments of @var{step}. The variable
+## @var{print_partial} and @var{hideval} are boolean flags to partial
+## and hidden views of the value on the range widget.
+## The first 3 parameters are essential, while the remaining parameters
+## @var{minval}, @var{maxval},@var{step},@var{print_partial},@var{hideval} if
+## not specified take on default values of 0,100,1,false,false
+## respectively.
+## @seealso{zenity_list, zenity_progress, zenity_entry, zenity_message,
+## zenity_text_info, zenity_file_selection, zenity_notification}
+## @end deftypefn
+
+function output = zenity_scale(title,text, value, minval, maxval, step, print_partial, hideval)
+
+  if (nargin < 1), title="Adjust the scale value"; endif
+  if (nargin < 2), text=""; endif
+  if (nargin < 3), value=0; endif
+  if (nargin < 4), minval= 0; endif
+  if (nargin < 5), maxval= 100; endif
+  if (nargin < 6), step  = 1; endif
+  if (nargin < 7), print_partial = false; endif
+  if (nargin < 8), hideval = false; endif
+
+  ppartial="";
+  hvalue="";
+
+  if(length(title)==0), title="Adjust the scale value"; endif
+  if(print_partial), ppartial="--print-partial"; endif
+  if(hideval), hvalue="--hide-value"; endif
+  
+  cmd = sprintf(['zenity --scale --title="%s" --text="%s" ', ...
+                 '--value=%d --min-value=%d --max-value=%d --step=%d ',...
+                '%s %s '],title, text, value, minval,maxval,step,ppartial,hvalue);
+  [status, output] = system(cmd);
+  if (status == 0)
+    output = str2num(output);
+  elseif (status == 1)
+    output = value; ##default when user kills it.
+  else
+    error("zenity_scale: %s", output); ##kill -9 
+  endif
+endfunction
+%
+%(Shamelessly copied from Søren Hauberg's zenity_calendar).
+%zenity --scale --text 'What is in your Wallet' --value 10 --min-value 0 --max-value 100 --step 5
+%zenity_scale('','What is in your Wallet',10,0,100,5)
+%
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