mirror of https://github.com/GNOME/gimp.git
85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <string.h>
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#include <glib-object.h>
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#include "vectors-types.h"
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#include "base/temp-buf.h"
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#include "core/gimpimage.h"
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#include "gimpstroke.h"
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#include "gimpvectors.h"
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#include "gimpvectors-preview.h"
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/* public functions */
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TempBuf *
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gimp_vectors_get_new_preview (GimpViewable *viewable,
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gint width,
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gint height)
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{
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GimpVectors *vectors;
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GimpItem *item;
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GArray *coords;
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GimpCoords point;
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GimpStroke *cur_stroke = NULL;
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gdouble xscale, yscale;
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gint x, y;
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guchar *data;
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gboolean closed;
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TempBuf *temp_buf;
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guchar white[1] = { 255 };
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gint i;
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vectors = GIMP_VECTORS (viewable);
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item = GIMP_ITEM (viewable);
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xscale = ((gdouble) width) / gimp_image_get_width (item->gimage);
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yscale = ((gdouble) height) / gimp_image_get_height (item->gimage);
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temp_buf = temp_buf_new (width, height, 1, 0, 0, white);
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data = temp_buf_data (temp_buf);
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while ((cur_stroke = gimp_vectors_stroke_get_next (vectors, cur_stroke)))
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{
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coords = gimp_stroke_interpolate (cur_stroke, 1.0, &closed);
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for (i=0; i < coords->len; i++)
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{
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point = g_array_index (coords, GimpCoords, i);
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x = (gint) (point.x * xscale + 0.5);
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y = (gint) (point.y * yscale + 0.5);
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if (x >= 0 && y >= 0 && x < width && y < height)
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data[y * width + x] = 0;
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}
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g_array_free (coords, TRUE);
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}
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return temp_buf;
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}
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