Mercurial > octave
view scripts/java/usejava.m @ 31006:35d37e433532 stable
replace use of depreciated QDesktopWidget in GUI
* gui-utils.cc: include QApplication, QRect and QScreen;
(get_screen_geometry): return QRect with geometry of primary screen;
(adjust_to_screen): adjust given QRect to be completely on the screen
that contains the largest part of the QRect, use a default geometry if
no part is on an available screen
* gui-utils.h: include QRect;
new function get_screen_geometry and adjust_to_screen
* community-news.cc: do not include QDesktopWidget, but gui-utils.h;
(get_screen_geometry); move function to gui-utils.cc;
* community-news.h: move get_screen_geometry to gui-utils.h
* find-dialog.cc: do not include QDesktopWidget, but gui-utils.h;
(restore_settings): use new function adjust_to_screen
* main-window.cc: do not include QDesktopWidget, but gui-utils.h;
(get_screen_geometry: move function to gui-utils.cc
* main-window.h: move function get_screen_geometry to gui.utils.h;
* octave-dock-widget.cc: do not include QDesktopWidget, but gui-utils.h
QScreen and QWindow;
(handle_settings): use adjust_to_screen and QGuiApplication->primaryScreen
* release-notes.cc: do not include QDesktopWidget, but gui-utils.h
and QScreen;
(get_screen_geometry): move to gui-utils.cc;
* release-notes.h: move get:screen_geometry to gui-utils.h
* terminal-dock-widget.cc: do not include QDesktopWidget but QScreen;
(terminal_dock_widget): use QGuiApplication->primaryScreen instead
of QDesktopWidget->screenGeometry
* welcome-wizard.cc: remove include of QDesktopWidget
author | Torsten Lilge <ttl-octave@mailbox.org> |
---|---|
date | Sun, 30 Jan 2022 16:41:44 +0100 |
parents | 796f54d4ddbf |
children | 5d3faba0342e |
line wrap: on
line source
######################################################################## ## ## Copyright (C) 2012-2022 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this ## or <https://octave.org/copyright/>. ## ## 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 ## <https://www.gnu.org/licenses/>. ## ######################################################################## ## -*- texinfo -*- ## @deftypefn {} {} usejava (@var{feature}) ## Return true if the Java element @var{feature} is available. ## ## Possible features are: ## ## @table @asis ## @item @nospell{@qcode{"awt"}} ## Abstract Window Toolkit for GUIs. ## ## @item @qcode{"desktop"} ## Interactive desktop is running. ## ## @item @qcode{"jvm"} ## Java Virtual Machine. ## ## @item @qcode{"swing"} ## Swing components for lightweight GUIs. ## @end table ## ## @code{usejava} determines if specific Java features are available in an ## Octave session. This function is provided for scripts which may alter ## their behavior based on the availability of Java. The feature ## @qcode{"desktop"} always returns @code{false} as Octave has no Java-based ## desktop. Other features may be available if Octave was compiled with the ## Java Interface and Java is installed. ## @seealso{javachk} ## @end deftypefn function retval = usejava (feature) if (nargin < 1 || ! ischar (feature)) print_usage (); endif retval = false; switch (feature) ## For each feature, try methods() on a Java class of a feature case "awt" try dum = methods ("java.awt.Frame"); retval = ! javaMethod ("isHeadless", "java.awt.GraphicsEnvironment"); end_try_catch case "desktop" ## Octave has no Java based GUI/desktop, leave retval = false case "jvm" try dum = methods ("java.lang.Runtime"); retval = true; end_try_catch case "swing" try dum = methods ("javax.swing.Popup"); retval = ! javaMethod ("isHeadless", "java.awt.GraphicsEnvironment"); end_try_catch otherwise error ("usejava: unrecognized FEATURE '%s'", feature); endswitch endfunction %!assert (usejava ("desktop"), false) %!testif HAVE_JAVA; usejava ("jvm") %! assert (usejava ("jvm"), true); ## Test input validation %!error <Invalid call> usejava () %!error <Invalid call> usejava (1) %!error <unrecognized FEATURE> usejava ("abc")