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/* $Id: screenshot.c 41 2006-05-22 12:23:29Z mmmaddd $ */
/*
G3DViewer - 3D object viewer
Copyright (C) 2005, 2006 Markus Dahms <mad@automagically.de>
This program 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 2 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <GL/gl.h>
static guint8 *screenshot_get_pixels(guint32 width, guint32 height)
{
guint8 *pixels;
pixels = g_new(guint8, width * height * 4);
glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
return pixels;
}
gboolean screenshot_save(const gchar *filename, guint32 width, guint32 height)
{
guint8 *pixels;
GdkPixbuf *pixbuf, *flipped;
pixels = screenshot_get_pixels(width, height);
if(pixels == NULL)
return FALSE;
pixbuf = gdk_pixbuf_new_from_data(pixels,
GDK_COLORSPACE_RGB, TRUE,
8, width, height, width * 4,
NULL, NULL);
if(pixbuf == NULL)
return FALSE;
/* GL returns pixels starting from lower left corner */
flipped = gdk_pixbuf_flip(pixbuf, FALSE);
if(flipped == NULL)
return FALSE;
gdk_pixbuf_save(flipped, filename, "png", NULL, NULL);
g_free(pixels);
gdk_pixbuf_unref(pixbuf);
gdk_pixbuf_unref(flipped);
return TRUE;
}
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