Gtk2::Ex::FormFactory:UsergContributed Perl DocGtk2::Ex::FormFactory::Image(3)NAMEGtk2::Ex::FormFactory::Image - An Image in a FormFactory framework
SYNOPSIS
Gtk2::Ex::FormFactory::Image->new (
bgcolor => Background color of the widget,
with_frame => Draw a frame around the image?,
scale_to_fit => Automatially scale the image in its container?,
max_width => Maximum width the image may scale to,
max_height => Maximum height the image may scale to,
scale => Display the image with this constant scaling,
scale_hook => Callback which returns the actual scale,
...
Gtk2::Ex::FormFactory::Widget attributes
);
DESCRIPTION
This class implements an Image in a Gtk2::Ex::FormFactory framework.
The image is always displayed with its natural aspect ratio, but there
are various possibilities to control the scaling of the image.
The value of the associated application object attribute is the
filename of the displayed image. The file format must be supported by
Gtk2::Gdk::PixBuf.
OBJECT HIERARCHY
Gtk2::Ex::FormFactory::Intro
Gtk2::Ex::FormFactory::Widget
+--- Gtk2::Ex::FormFactory::Image
Gtk2::Ex::FormFactory::Layout
Gtk2::Ex::FormFactory::Rules
Gtk2::Ex::FormFactory::Context
Gtk2::Ex::FormFactory::Proxy
ATTRIBUTES
Attributes are handled through the common get_ATTR(), set_ATTR() style
accessors, but they are mostly passed once to the object constructor
and must not be altered after the associated FormFactory was built.
bgcolor = "RGB Hex Triple" [optional]
This is the background color of the widget. If set all areas of the
widget not filled with the image are painted with this color.
with_frame = BOOL [optional]
If set to TRUE a frame is rendered around the image.
scale_to_fit = BOOL [optional]
If set to TRUE the image will automatically scale proportionally
into to the space the container of this widget allocated for the
image widget.
max_width = INTEGER [optional]
With this attribute you can define a maximm width the image may
scale to.
max_height = INTEGER [optional]
With this attribute you can define a maximm height the image may
scale to.
scale = FLOAT [optional]
If you set this attribute, no dynamic scaling applies, but the
image will be constantly scaled with this value. This overrides all
other attributes regarding dynamic scaling.
scale_hook = CODEREF(FormFactory::Image, PixBuf) [optional]
This code reference is called if the image needs an update e.g. if
the associated application object attribute changed or the parent
was resized and scale_to_fit was set.
The Gtk2::Ex::FormFactory::Image instance and the Gtk2::Gdk::PixBuf
of the image are passed to the function.
If scale_to_fit is set the widget's dimension are tracked
automatically. The actual width and height are stored in the
attributes widget_width and widget_height and thus can be accessed
from the callback by calling get_widget_width and get_widget_width.
For more attributes refer to Gtk2::Ex::FormFactory::Widget.
AUTHORS
JA~Xrn Reder <joern at zyn dot de>
COPYRIGHT AND LICENSE
Copyright 2004-2006 by JA~Xrn Reder.
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Library General Public License as published
by the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307
USA.
perl v5.14.1 2006-02-27 Gtk2::Ex::FormFactory::Image(3)
