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App::MathImage::Gtk2::Ex::ArrowButton -- button with a direction arrow
use App::MathImage::Gtk2::Ex::ArrowButton; my $ab = App::MathImage::Gtk2::Ex::ArrowButton->new;
App::MathImage::Gtk2::Ex::ArrowButton is a subclass of
Gtk2::Widget Gtk2::Container Gtk2::Bin Gtk2::Button App::MathImage::Gtk2::Ex::ArrowButton
An ArrowButton widget is a
Gtk2::Button with a directional arrow drawn in it.
+-----------+ | + | | |\ | | | \ | | | + | | | / | | |/ | | + | +-----------+
In the current code it's done simply with a
Gtk2::Arrow widget child, but with various properties and style settings arranged to make it fill the button, and to avoid the arrow's otherwise hard-coded 15 pixel minimum size.
$ab = App::MathImage::Gtk2::Ex::ArrowButton->new (key=>value,...)
Create and return a new ArrowButton object. Optional key/value pairs set initial properties per
my $ab = App::MathImage::Gtk2::Ex::ArrowButton->new (arrow_type => 'left');
The arrow type to show, one of
nonemeans nothing is shown. The default is the same as
Gtk2::Arrow always responds to its
$arrow->size_request asking for 15x15 pixels. Most container widgets (including
Gtk2::Button) respect that and the effect is that it can be made bigger if desired, but no smaller than 15 pixels. A
$arrow->set_size_request(1,1) or similar can be used to reduce it if the container's size is going to be determined elsewhere and the arrows shouldn't have a minimum.
Copyright 2010, 2011, 2012, 2013, 2014, 2019 Kevin Ryde
Math-Image 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, or (at your option) any later version.
Math-Image 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 Math-Image. If not, see http://www.gnu.org/licenses/.