mirror of https://github.com/GNOME/gimp.git
288 lines
8.6 KiB
C
288 lines
8.6 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 <glib-object.h>
|
|
|
|
#include "paint-types.h"
|
|
|
|
#include "base/boundary.h"
|
|
|
|
#include "core/gimpdrawable.h"
|
|
|
|
#include "vectors/gimpstroke.h"
|
|
#include "vectors/gimpvectors.h"
|
|
|
|
#include "gimppaintcore.h"
|
|
#include "gimppaintcore-stroke.h"
|
|
#include "gimppaintoptions.h"
|
|
|
|
|
|
static const GimpCoords default_coords = GIMP_COORDS_DEFAULT_VALUES;
|
|
|
|
|
|
gboolean
|
|
gimp_paint_core_stroke (GimpPaintCore *core,
|
|
GimpDrawable *drawable,
|
|
GimpPaintOptions *paint_options,
|
|
GimpCoords *strokes,
|
|
gint n_strokes)
|
|
{
|
|
g_return_val_if_fail (GIMP_IS_PAINT_CORE (core), FALSE);
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
|
|
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), FALSE);
|
|
g_return_val_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options), FALSE);
|
|
g_return_val_if_fail (strokes != NULL, FALSE);
|
|
g_return_val_if_fail (n_strokes > 0, FALSE);
|
|
|
|
if (gimp_paint_core_start (core, drawable, paint_options, &strokes[0]))
|
|
{
|
|
gint i;
|
|
|
|
core->start_coords = strokes[0];
|
|
core->last_coords = strokes[0];
|
|
|
|
gimp_paint_core_paint (core, drawable, paint_options,
|
|
GIMP_PAINT_STATE_INIT, 0);
|
|
|
|
gimp_paint_core_paint (core, drawable, paint_options,
|
|
GIMP_PAINT_STATE_MOTION, 0);
|
|
|
|
for (i = 1; i < n_strokes; i++)
|
|
{
|
|
core->cur_coords = strokes[i];
|
|
|
|
gimp_paint_core_interpolate (core, drawable, paint_options, 0);
|
|
}
|
|
|
|
gimp_paint_core_paint (core, drawable, paint_options,
|
|
GIMP_PAINT_STATE_FINISH, 0);
|
|
|
|
gimp_paint_core_finish (core, drawable);
|
|
|
|
gimp_paint_core_cleanup (core);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
gboolean
|
|
gimp_paint_core_stroke_boundary (GimpPaintCore *core,
|
|
GimpDrawable *drawable,
|
|
GimpPaintOptions *paint_options,
|
|
const BoundSeg *bound_segs,
|
|
gint n_bound_segs,
|
|
gint offset_x,
|
|
gint offset_y)
|
|
{
|
|
GimpImage *image;
|
|
BoundSeg *stroke_segs;
|
|
gint n_stroke_segs;
|
|
gint off_x;
|
|
gint off_y;
|
|
GimpCoords *coords;
|
|
gboolean initialized = FALSE;
|
|
gint n_coords;
|
|
gint seg;
|
|
gint s;
|
|
|
|
g_return_val_if_fail (GIMP_IS_PAINT_CORE (core), FALSE);
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
|
|
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), FALSE);
|
|
g_return_val_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options), FALSE);
|
|
g_return_val_if_fail (bound_segs != NULL && n_bound_segs > 0, FALSE);
|
|
|
|
image = gimp_item_get_image (GIMP_ITEM (drawable));
|
|
|
|
stroke_segs = boundary_sort (bound_segs, n_bound_segs, &n_stroke_segs);
|
|
|
|
if (n_stroke_segs == 0)
|
|
return TRUE;
|
|
|
|
gimp_item_offsets (GIMP_ITEM (drawable), &off_x, &off_y);
|
|
|
|
off_x -= offset_x;
|
|
off_y -= offset_y;
|
|
|
|
coords = g_new0 (GimpCoords, n_bound_segs + 4);
|
|
|
|
seg = 0;
|
|
n_coords = 0;
|
|
|
|
/* we offset all coordinates by 0.5 to align the brush with the path */
|
|
|
|
coords[n_coords] = default_coords;
|
|
coords[n_coords].x = (gdouble) (stroke_segs[0].x1 - off_x + 0.5);
|
|
coords[n_coords].y = (gdouble) (stroke_segs[0].y1 - off_y + 0.5);
|
|
|
|
n_coords++;
|
|
|
|
for (s = 0; s < n_stroke_segs; s++)
|
|
{
|
|
while (stroke_segs[seg].x1 != -1 ||
|
|
stroke_segs[seg].x2 != -1 ||
|
|
stroke_segs[seg].y1 != -1 ||
|
|
stroke_segs[seg].y2 != -1)
|
|
{
|
|
coords[n_coords] = default_coords;
|
|
coords[n_coords].x = (gdouble) (stroke_segs[seg].x1 - off_x + 0.5);
|
|
coords[n_coords].y = (gdouble) (stroke_segs[seg].y1 - off_y + 0.5);
|
|
|
|
n_coords++;
|
|
seg++;
|
|
}
|
|
|
|
/* Close the stroke points up */
|
|
coords[n_coords] = coords[0];
|
|
|
|
n_coords++;
|
|
|
|
if (initialized ||
|
|
gimp_paint_core_start (core, drawable, paint_options, &coords[0]))
|
|
{
|
|
gint i;
|
|
|
|
initialized = TRUE;
|
|
|
|
core->start_coords = coords[0];
|
|
core->last_coords = coords[0];
|
|
|
|
gimp_paint_core_paint (core, drawable, paint_options,
|
|
GIMP_PAINT_STATE_INIT, 0);
|
|
|
|
gimp_paint_core_paint (core, drawable, paint_options,
|
|
GIMP_PAINT_STATE_MOTION, 0);
|
|
|
|
for (i = 1; i < n_coords; i++)
|
|
{
|
|
core->cur_coords = coords[i];
|
|
|
|
gimp_paint_core_interpolate (core, drawable, paint_options, 0);
|
|
}
|
|
|
|
gimp_paint_core_paint (core, drawable, paint_options,
|
|
GIMP_PAINT_STATE_FINISH, 0);
|
|
}
|
|
|
|
n_coords = 0;
|
|
seg++;
|
|
|
|
coords[n_coords] = default_coords;
|
|
coords[n_coords].x = (gdouble) (stroke_segs[seg].x1 - off_x + 0.5);
|
|
coords[n_coords].y = (gdouble) (stroke_segs[seg].y1 - off_y + 0.5);
|
|
|
|
n_coords++;
|
|
}
|
|
|
|
if (initialized)
|
|
{
|
|
gimp_paint_core_finish (core, drawable);
|
|
|
|
gimp_paint_core_cleanup (core);
|
|
}
|
|
|
|
g_free (coords);
|
|
g_free (stroke_segs);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
gimp_paint_core_stroke_vectors (GimpPaintCore *core,
|
|
GimpDrawable *drawable,
|
|
GimpPaintOptions *paint_options,
|
|
GimpVectors *vectors)
|
|
{
|
|
GList *stroke;
|
|
GArray *coords = NULL;
|
|
gboolean initialized = FALSE;
|
|
gboolean closed;
|
|
gint off_x, off_y;
|
|
gint vectors_off_x, vectors_off_y;
|
|
|
|
g_return_val_if_fail (GIMP_IS_PAINT_CORE (core), FALSE);
|
|
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
|
|
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), FALSE);
|
|
g_return_val_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options), FALSE);
|
|
g_return_val_if_fail (GIMP_IS_VECTORS (vectors), FALSE);
|
|
|
|
gimp_item_offsets (GIMP_ITEM (vectors), &vectors_off_x, &vectors_off_y);
|
|
gimp_item_offsets (GIMP_ITEM (drawable), &off_x, &off_y);
|
|
|
|
off_x -= vectors_off_x;
|
|
off_y -= vectors_off_y;
|
|
|
|
for (stroke = vectors->strokes; stroke; stroke = stroke->next)
|
|
{
|
|
coords = gimp_stroke_interpolate (GIMP_STROKE (stroke->data),
|
|
1.0, &closed);
|
|
|
|
if (coords && coords->len)
|
|
{
|
|
gint i;
|
|
|
|
for (i = 0; i < coords->len; i++)
|
|
{
|
|
g_array_index (coords, GimpCoords, i).x -= off_x;
|
|
g_array_index (coords, GimpCoords, i).y -= off_y;
|
|
}
|
|
|
|
if (initialized ||
|
|
gimp_paint_core_start (core, drawable, paint_options,
|
|
&g_array_index (coords, GimpCoords, 0)))
|
|
{
|
|
initialized = TRUE;
|
|
|
|
core->start_coords = g_array_index (coords, GimpCoords, 0);
|
|
core->last_coords = g_array_index (coords, GimpCoords, 0);
|
|
|
|
gimp_paint_core_paint (core, drawable, paint_options,
|
|
GIMP_PAINT_STATE_INIT, 0);
|
|
|
|
gimp_paint_core_paint (core, drawable, paint_options,
|
|
GIMP_PAINT_STATE_MOTION, 0);
|
|
|
|
for (i = 1; i < coords->len; i++)
|
|
{
|
|
core->cur_coords = g_array_index (coords, GimpCoords, i);
|
|
|
|
gimp_paint_core_interpolate (core, drawable, paint_options, 0);
|
|
}
|
|
|
|
gimp_paint_core_paint (core, drawable, paint_options,
|
|
GIMP_PAINT_STATE_FINISH, 0);
|
|
}
|
|
}
|
|
|
|
if (coords)
|
|
g_array_free (coords, TRUE);
|
|
}
|
|
|
|
if (initialized)
|
|
{
|
|
gimp_paint_core_finish (core, drawable);
|
|
|
|
gimp_paint_core_cleanup (core);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|