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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* example_02.c: sample gnome-print code
*
* This program 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 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 Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Authors:
* Chema Celorio <chema@ximian.com>
*
* Copyright (C) 2002 Ximian Inc. and authors
*
*/
/*
* See README
*/
#include <libgnomeprint/gnome-print.h>
#include <libgnomeprint/gnome-print-job.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#define NUMBER_OF_PIXELS 256
static void
my_print_image_from_pixbuf (GnomePrintContext *gpc, GdkPixbuf *pixbuf)
{
guchar *raw_image;
gboolean has_alpha;
gint rowstride, height, width;
raw_image = gdk_pixbuf_get_pixels (pixbuf);
has_alpha = gdk_pixbuf_get_has_alpha (pixbuf);
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
width = gdk_pixbuf_get_width (pixbuf);
if (has_alpha)
gnome_print_rgbaimage (gpc, (char *)raw_image, width, height, rowstride);
else
gnome_print_rgbimage (gpc, (char *)raw_image, width, height, rowstride);
}
static void
my_print_image_from_disk (GnomePrintContext *gpc)
{
GdkPixbuf *pixbuf;
GError *error;
/* Load the image into a pixbuf */
error = NULL;
pixbuf = gdk_pixbuf_new_from_file ("sample-image.png", &error);
if (!pixbuf) {
g_print ("Could not load sample_image.png.\n");
return;
}
/* Save the graphic context, scale, print the image and restore */
gnome_print_gsave (gpc);
gnome_print_scale (gpc, 144, 144);
my_print_image_from_pixbuf (gpc, pixbuf);
gnome_print_grestore (gpc);
g_object_unref (G_OBJECT (pixbuf));
}
static void
my_print_image_from_memory (GnomePrintContext *gpc)
{
gchar color_image [NUMBER_OF_PIXELS] [NUMBER_OF_PIXELS] [3];
gint pixels = NUMBER_OF_PIXELS;
gint x, y;
/* Create the image in memory */
for (y = 0; y < pixels; y++) {
for (x = 0; x < pixels; x++) {
color_image [y][x][0] = (x + y) >> 1;
color_image [y][x][1] = (x + (pixels - 1 - y)) >> 1;
color_image [y][x][2] = ((pixels - 1 - x) + y) >> 1;
}
}
/* All images in postscript are printed on a 1 x 1 square, since we
* want an image which has a size of 2" by 2" inches, we have to scale
* the CTM (Current Transformation Matrix). Save the graphic state and
* restore it after we are done so that our scaling does not affect the
* drawing calls that follow.
*/
gnome_print_gsave (gpc);
gnome_print_scale (gpc, 144, 144);
gnome_print_rgbimage (gpc, (char *)color_image, pixels, pixels, pixels * 3);
gnome_print_grestore (gpc);
}
static void
my_draw (GnomePrintContext *gpc)
{
gnome_print_beginpage (gpc, "1");
gnome_print_translate (gpc, 200, 100);
my_print_image_from_memory (gpc);
gnome_print_translate (gpc, 0, 150);
my_print_image_from_disk (gpc);
gnome_print_showpage (gpc);
}
static void
my_print (void)
{
GnomePrintJob *job;
GnomePrintContext *gpc;
job = gnome_print_job_new (NULL);
gpc = gnome_print_job_get_context (job);
my_draw (gpc);
gnome_print_job_close (job);
gnome_print_job_print (job);
g_object_unref (gpc);
g_object_unref (job);
}
int
main (int argc, char * argv[])
{
g_type_init ();
my_print ();
g_print ("Done...\n");
return 0;
}
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