Mercurial > octave-antonio
view scripts/plot/util/zoom.m @ 20115:7e0e8fb16201
Overhaul close.m to add "force" argument (bug #44324)
* close.m: Emit an error if there is no figure handle or "all" argument given.
Check for "force" argument and delete the requested figure handles rather than
calling closereqfcn. Add BIST input validation tests. Add new calling forms
and explanation of "force" to docstring.
author | Rik <rik@octave.org> |
---|---|
date | Wed, 22 Apr 2015 08:41:50 -0700 |
parents | 065ccb9a1324 |
children |
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## Copyright (C) 2014-2015 John W. Eaton ## ## This file is part of Octave. ## ## Octave 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 3 of the License, or (at ## your option) any later version. ## ## Octave 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 Octave; see the file COPYING. If not, see ## <http://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {Command} {} zoom ## @deftypefnx {Command} {} zoom (@var{factor}) ## @deftypefnx {Command} {} zoom on ## @deftypefnx {Command} {} zoom off ## @deftypefnx {Command} {} zoom xon ## @deftypefnx {Command} {} zoom yon ## @deftypefnx {Command} {} zoom out ## @deftypefnx {Command} {} zoom reset ## @deftypefnx {Command} {} zoom (@var{hfig}, @var{option}) ## Zoom the current axes object or control the interactive zoom mode of ## a figure in the GUI. ## ## Given a numeric argument greater than zero, zoom by the given factor. ## If the zoom factor is greater than one, zoom in on the plot. If the ## factor is less than one, zoom out. If the zoom factor is a two- or ## three-element vector, then the elements specify the zoom factors for ## the x, y, and z axes respectively. ## ## Given the option @qcode{"on"} or @qcode{"off"}, set the interactive ## zoom mode on or off. ## ## With no arguments, toggle the current zoom mode on or off. ## ## Given the option @qcode{"xon"} or @qcode{"yon"}, enable zoom mode ## for the x or y axis only. ## ## Given the option @qcode{"out"}, zoom to the initial zoom setting. ## ## Given the option @qcode{"reset"}, store the current zoom setting so ## that @code{zoom out} will return to this zoom level. ## ## If the first argument @var{hfig} is a figure, then operate on ## the given figure rather than the current figure as returned by ## @code{gcf}. ## ## @seealso{pan, rotate3d} ## @end deftypefn ## Eventually we need to also support these features: ## @deftypefnx {Command} {zoom_object_handle =} zoom (@var{hfig}) function zoom (varargin) nargs = nargin; if (nargs > 2) print_usage (); endif if (nargs == 1 && nargout > 0 && isfigure (varargin{1})) error ("zoom_object_handle = zoom (hfig): not implemented"); endif hfig = NaN; if (nargs == 2) hfig = varargin{1}; if (isfigure (hfig)) varargin(1) = []; nargs--; else error ("zoom: expecting figure handle as first argument"); endif endif if (isnan (hfig)) hfig = gcf (); endif if (nargs == 0) zm = get (hfig, "__zoom_mode__"); if (strcmp (zm.Enable, "on")) zm.Enable = "off"; else zm.Enable = "on"; endif set (hfig, "__zoom_mode__", zm); update_mouse_mode (hfig, zm.Enable); elseif (nargs == 1) arg = varargin{1}; if (isnumeric (arg)) factor = arg; switch (numel (factor)) case 2 xfactor = factor(1); yfactor = factor(2); case 1 xfactor = yfactor = factor; otherwise error ("zoom: invalid factor"); endswitch if (xfactor < 0 || yfactor < 0) error ("zoom: factor must be greater than 1"); elseif (xfactor == 1 && yfactor == 1) return; endif cax = get (hfig, "currentaxes"); if (! isempty (cax)) if (xfactor != 1) if (yfactor != 1) mode = "both"; else mode = "horizontal"; endif else if (yfactor != 1) mode = "vertical"; endif endif __zoom__ (cax, mode, factor); endif elseif (ischar (arg)) switch (arg) case {"on", "off", "xon", "yon"} zm = get (hfig, "__zoom_mode__"); switch (arg) case {"on", "off"} zm.Enable = arg; zm.Motion = "both"; case "xon" zm.Enable = "on"; zm.Motion = "horizontal"; case "yon" zm.Enable = "on"; zm.Motion = "vertical"; endswitch set (hfig, "__zoom_mode__", zm); update_mouse_mode (hfig, arg); case "out" cax = get (hfig, "currentaxes"); if (! isempty (cax)) __zoom__ (cax, "out"); endif case "reset" cax = get (hfig, "currentaxes"); if (! isempty (cax)) __zoom__ (cax, "reset"); endif otherwise error ("zoom: unrecognized option '%s'", arg); endswitch else error ("zoom: wrong type argument '%s'", class (arg)); endif endif endfunction function update_mouse_mode (hfig, arg) if (strcmp (arg, "off")) set (hfig, "__mouse_mode__", "none"); else ## FIXME: Is there a better way other than calling these ## functions to set the other mouse mode Enable fields to ## "off"? pan ("off"); rotate3d ("off"); set (hfig, "__mouse_mode__", "zoom"); endif endfunction %!demo %! clf; %! sombrero (); %! pause (1); %! %% zoom in by a factor of 2 %! zoom (2); %! pause (1); %! %% return to original zoom level %! zoom out; %! pause (1); %! %% zoom in by a factor of 2 %! zoom (2); %! pause (1); %! %% set this zoom level as the "initial zoom level" %! %% and zoom in some more %! zoom reset; %! zoom (2); %! pause (1); %! %% return to zoom level set by last call to "zoom reset" %! zoom out;