mirror of https://github.com/GNOME/gimp.git
92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
/* The GIMP -- an image manipulation program
|
|
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <string.h>
|
|
|
|
#include <glib-object.h>
|
|
|
|
#include "vectors-types.h"
|
|
|
|
#include "base/temp-buf.h"
|
|
|
|
#include "core/gimpimage.h"
|
|
|
|
#include "gimpstroke.h"
|
|
#include "gimpvectors.h"
|
|
#include "gimpvectors-preview.h"
|
|
|
|
|
|
/* public functions */
|
|
|
|
TempBuf *
|
|
gimp_vectors_get_new_preview (GimpViewable *viewable,
|
|
gint width,
|
|
gint height)
|
|
{
|
|
GimpVectors *vectors;
|
|
GimpItem *item;
|
|
GimpStroke *cur_stroke;
|
|
gdouble xscale, yscale;
|
|
guchar *data;
|
|
TempBuf *temp_buf;
|
|
guchar white[1] = { 255 };
|
|
|
|
vectors = GIMP_VECTORS (viewable);
|
|
item = GIMP_ITEM (viewable);
|
|
|
|
xscale = ((gdouble) width) / gimp_image_get_width (item->gimage);
|
|
yscale = ((gdouble) height) / gimp_image_get_height (item->gimage);
|
|
|
|
temp_buf = temp_buf_new (width, height, 1, 0, 0, white);
|
|
data = temp_buf_data (temp_buf);
|
|
|
|
for (cur_stroke = gimp_vectors_stroke_get_next (vectors, NULL);
|
|
cur_stroke;
|
|
cur_stroke = gimp_vectors_stroke_get_next (vectors, cur_stroke))
|
|
{
|
|
GArray *coords;
|
|
gboolean closed;
|
|
gint i;
|
|
|
|
coords = gimp_stroke_interpolate (cur_stroke, 0.5, &closed);
|
|
|
|
if (coords)
|
|
{
|
|
for (i = 0; i < coords->len; i++)
|
|
{
|
|
GimpCoords point;
|
|
gint x, y;
|
|
|
|
point = g_array_index (coords, GimpCoords, i);
|
|
|
|
x = ROUND (point.x * xscale);
|
|
y = ROUND (point.y * yscale);
|
|
|
|
if (x >= 0 && y >= 0 && x < width && y < height)
|
|
data[y * width + x] = 0;
|
|
}
|
|
|
|
g_array_free (coords, TRUE);
|
|
}
|
|
}
|
|
|
|
return temp_buf;
|
|
}
|