use Gtk2::ImageView; Gtk2->init; $window = Gtk2::Window->new(); $view = Gtk2::ImageView->new; $view->set_pixbuf($pixbuf, TRUE); $window->add($view); $window->show_all;
GtkImageView is a full-featured general purpose image viewer widget for GTK. It provides a scrollable, zoomable pane in which a pixbuf can be displayed.
The Gtk2::ImageView module allows a perl developer to use the GtkImageView Widget.
GtkImageView Reference Manual at http://trac.bjourne.webfactional.com/
perl(1), Glib(3pm), Gtk2(3pm), Gtk2::ImageViewer - an alternative image viewer widget.
Jeffrey Ratcliffe <Jeffrey dot Ratcliffe at gmail dot com>, with patches from muppet <scott at asofyet dot org>, Torsten Schoenfeld <kaffetisch at web dot de> and Emanuele Bassi <ebassi at gmail dot com> Kevin Ryde <user42 at zip.com.au>
The DESCRIPTION section of this page is adapted from the documentation of GtkImageView.
Copyright (c) 2007 -- 2008 by Jeffrey Ratcliffe <Jeffrey.Ratcliffe@gmail.com> see AUTHORS for complete list of contributors
This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 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 Lesser General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.
The current viewport is defined as the rectangle, in zoomspace coordinates as the area of the loaded pixbuf the Gtk2::ImageView is currently showing.
For example, if the widgets allocated size is 100, 100 and the pixbufs size is 50, 50 and the zoom factor is 1.0, then the pixbuf will be drawn centered on the widget. rect will then be (25,25)-[50,50].
This method is useful when converting from widget to image or zoom space coordinates.
Note that this function may return a rectangle that is not visible on the widget.
The offset is clamped so that it will never cause the GtkImageView to display pixels outside the pixbuf. Setting this attribute causes the widget to repaint itself if it is realized.
If invalidate is TRUE, the views entire area will be invalidated instead of redrawn immidiately. The view is then queued for redraw, which means that additional operations can be performed on it before it is redrawn.
The difference can sometimes be important like when you are overlaying data and get flicker or artifacts when setting the offset. If that happens, setting invalidate to TRUE could fix the problem. See the source code to GtkImageToolSelector for an example.
Normally, invalidate should always be FALSE because it is much faster to repaint immidately than invalidating.
Calling this method causes the widget to immediately repaint. It also causes the pixbuf-changed signal to be emitted. This is done so that other widgets (such as GtkImageNav) will have a chance to render a view of the pixbuf with the new transparency settings.
Setting the fitting causes the widget to immediately repaint itself.
Fitting is by default TRUE.
Sometimes, the fit mode should not be reset. For example, if GtkImageView is showing an animation, it would be bad to reset the fit mode for each new frame. The parameter should then be FALSE which leaves the fit mode of the view untouched.
This method should not be used if merely the contents of the pixbuf has changed. See gtk_image_view_damage_pixels() for that.
If reset_fit is TRUE, the zoom-changed signal is emitted, otherwise not. The pixbuf-changed signal is also emitted.
The default pixbuf is NULL.
Fitting is always disabled after this method has run. The zoom-changed signal is unconditionally emitted.
The default value is FALSE.
The default value is TRUE.
Setting the interpolation mode causes the widget to immidiately repaint itself.
The default interpolation mode is GDK_INTERP_BILINEAR.
The default value is TRUE.
Setting the tool causes the widget to immediately repaint itself.
The default image tool is a Gtk2::ImageView::Tool::Dragger instance. See also Gtk2::ImageView::Tool.
This method must be used when modifying the image data:
// Drawing something cool in the area 20,20 - 60,60 here... ... // And force an update $view->damage_pixels (Gtk2::Gdk::Rectangle->new(20, 20, 40, 40);
If the whole pixbuf has been modified then rect should be NULL to indicate that a total update is needed.
See also gtk_image_view_set_pixbuf().
Returns the version of the underlying GtkImageView C library