gimp/plug-ins/gimpressionist/gimp.c

564 lines
16 KiB
C

/* GIMP - The GNU 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 3 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, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include "ppmtool.h"
#include "infile.h"
#include "gimpressionist.h"
#include "preview.h"
#include "brush.h"
#include "presets.h"
#include "random.h"
#include "orientmap.h"
#include "size.h"
#include "libgimp/stdplugins-intl.h"
typedef struct _Gimpressionist Gimpressionist;
typedef struct _GimpressionistClass GimpressionistClass;
struct _Gimpressionist
{
GimpPlugIn parent_instance;
};
struct _GimpressionistClass
{
GimpPlugInClass parent_class;
};
#define GIMPRESSIONIST_TYPE (gimpressionist_get_type ())
#define GIMPRESSIONIST (obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMPRESSIONIST_TYPE, Gimpressionist))
GType gimpressionist_get_type (void) G_GNUC_CONST;
static GList * gimpressionist_query_procedures (GimpPlugIn *plug_in);
static GimpProcedure * gimpressionist_create_procedure (GimpPlugIn *plug_in,
const gchar *name);
static GimpValueArray * gimpressionist_run (GimpProcedure *procedure,
GimpRunMode run_mode,
GimpImage *image,
gint n_drawables,
GimpDrawable **drawables,
const GimpValueArray *args,
gpointer run_data);
static void gimpressionist_main (void);
G_DEFINE_TYPE (Gimpressionist, gimpressionist, GIMP_TYPE_PLUG_IN)
GIMP_MAIN (GIMPRESSIONIST_TYPE)
DEFINE_STD_SET_I18N
static GimpDrawable *drawable;
static ppm_t infile = { 0, 0, NULL };
static ppm_t inalpha = { 0, 0, NULL };
static void
gimpressionist_class_init (GimpressionistClass *klass)
{
GimpPlugInClass *plug_in_class = GIMP_PLUG_IN_CLASS (klass);
plug_in_class->query_procedures = gimpressionist_query_procedures;
plug_in_class->create_procedure = gimpressionist_create_procedure;
plug_in_class->set_i18n = STD_SET_I18N;
}
static void
gimpressionist_init (Gimpressionist *gimpressionist)
{
}
static GList *
gimpressionist_query_procedures (GimpPlugIn *plug_in)
{
return g_list_append (NULL, g_strdup (PLUG_IN_PROC));
}
static GimpProcedure *
gimpressionist_create_procedure (GimpPlugIn *plug_in,
const gchar *name)
{
GimpProcedure *procedure = NULL;
if (! strcmp (name, PLUG_IN_PROC))
{
procedure = gimp_image_procedure_new (plug_in, name,
GIMP_PDB_PROC_TYPE_PLUGIN,
gimpressionist_run, NULL, NULL);
gimp_procedure_set_image_types (procedure, "RGB*, GRAY*");
gimp_procedure_set_sensitivity_mask (procedure,
GIMP_PROCEDURE_SENSITIVE_DRAWABLE);
gimp_procedure_set_menu_label (procedure, _("_GIMPressionist..."));
gimp_procedure_add_menu_path (procedure, "<Image>/Filters/Artistic");
gimp_procedure_set_documentation (procedure,
_("Performs various artistic "
"operations"),
"Performs various artistic operations "
"on an image",
name);
gimp_procedure_set_attribution (procedure,
"Vidar Madsen <vidar@prosalg.no>",
"Vidar Madsen",
PLUG_IN_VERSION);
GIMP_PROC_ARG_STRING (procedure, "preset",
"Preset",
"Preset Name",
NULL,
G_PARAM_READWRITE);
}
return procedure;
}
void
infile_copy_to_ppm (ppm_t * p)
{
if (!PPM_IS_INITED (&infile))
grabarea ();
ppm_copy (&infile, p);
}
void
infile_copy_alpha_to_ppm (ppm_t * p)
{
ppm_copy (&inalpha, p);
}
static GimpValueArray *
gimpressionist_run (GimpProcedure *procedure,
GimpRunMode run_mode,
GimpImage *image,
gint n_drawables,
GimpDrawable **drawables,
const GimpValueArray *args,
gpointer run_data)
{
const gchar *preset_name;
gegl_init (NULL, NULL);
if (n_drawables != 1)
{
GError *error = NULL;
g_set_error (&error, GIMP_PLUG_IN_ERROR, 0,
_("Procedure '%s' only works with one drawable."),
gimp_procedure_get_name (procedure));
return gimp_procedure_new_return_values (procedure,
GIMP_PDB_CALLING_ERROR,
error);
}
else
{
drawable = drawables[0];
}
img_has_alpha = gimp_drawable_has_alpha (drawable);
random_generator = g_rand_new ();
{
gint x1, y1, width, height;
if (! gimp_drawable_mask_intersect (drawable,
&x1, &y1, &width, &height))
{
return gimp_procedure_new_return_values (procedure,
GIMP_PDB_SUCCESS,
NULL);
}
}
restore_default_values ();
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
gimp_get_data (PLUG_IN_PROC, &pcvals);
if (! create_gimpressionist ())
{
return gimp_procedure_new_return_values (procedure,
GIMP_PDB_CANCEL,
NULL);
}
break;
case GIMP_RUN_NONINTERACTIVE:
preset_name = GIMP_VALUES_GET_STRING (args, 0);
if (select_preset (preset_name))
{
return gimp_procedure_new_return_values (procedure,
GIMP_PDB_EXECUTION_ERROR,
NULL);
}
break;
case GIMP_RUN_WITH_LAST_VALS:
gimp_get_data (PLUG_IN_PROC, &pcvals);
break;
}
/* It seems that the value of the run variable is stored in the
* preset. I don't know if it's a bug or a feature, but I just work
* here and am anxious to get a working version. So I'm setting it
* to the correct value here.
*
* It also seems that defaultpcvals have this erroneous value as
* well, so it gets set to FALSE as well. Thus it is always set to
* TRUE upon a non-interactive run. -- Shlomi Fish
*/
pcvals.run = TRUE;
if (gimp_drawable_is_rgb (drawable) ||
gimp_drawable_is_gray (drawable))
{
gimpressionist_main ();
if (run_mode != GIMP_RUN_NONINTERACTIVE)
gimp_displays_flush ();
if (run_mode == GIMP_RUN_INTERACTIVE)
gimp_set_data (PLUG_IN_PROC, &pcvals, sizeof (gimpressionist_vals_t));
}
else
{
return gimp_procedure_new_return_values (procedure,
GIMP_PDB_EXECUTION_ERROR,
NULL);
}
/* Resources Cleanup */
g_rand_free (random_generator);
free_parsepath_cache ();
brush_reload (NULL, NULL);
preview_free_resources ();
brush_free ();
preset_free ();
orientation_map_free_resources ();
size_map_free_resources ();
return gimp_procedure_new_return_values (procedure, GIMP_PDB_SUCCESS, NULL);
}
static const Babl *
get_u8_format (GimpDrawable *drawable)
{
if (gimp_drawable_is_rgb (drawable))
{
if (gimp_drawable_has_alpha (drawable))
return babl_format ("R'G'B'A u8");
else
return babl_format ("R'G'B' u8");
}
else
{
if (gimp_drawable_has_alpha (drawable))
return babl_format ("Y'A u8");
else
return babl_format ("Y' u8");
}
}
void
grabarea (void)
{
GeglBuffer *src_buffer;
GeglBufferIterator *iter;
const Babl *format;
gint bpp;
ppm_t *p;
gint x1, y1;
gint x, y;
gint width, height;
gint row, col;
gint rowstride;
if (! gimp_drawable_mask_intersect (drawable,
&x1, &y1, &width, &height))
return;
ppm_new (&infile, width, height);
p = &infile;
format = get_u8_format (drawable);
bpp = babl_format_get_bytes_per_pixel (format);
if (gimp_drawable_has_alpha (drawable))
ppm_new (&inalpha, width, height);
rowstride = p->width * 3;
src_buffer = gimp_drawable_get_buffer (drawable);
iter = gegl_buffer_iterator_new (src_buffer,
GEGL_RECTANGLE (x1, y1, width, height), 0,
format,
GEGL_ACCESS_READ, GEGL_ABYSS_NONE, 1);
while (gegl_buffer_iterator_next (iter))
{
GeglRectangle roi = iter->items[0].roi;
const guchar *src = iter->items[0].data;
switch (bpp)
{
case 1:
for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
{
const guchar *s = src;
guchar *tmprow = p->col + row * rowstride;
for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
{
gint k = col * 3;
tmprow[k + 0] = s[0];
tmprow[k + 1] = s[0];
tmprow[k + 2] = s[0];
s++;
}
src += bpp * roi.width;
}
break;
case 2:
for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
{
const guchar *s = src;
guchar *tmprow = p->col + row * rowstride;
guchar *tmparow = inalpha.col + row * rowstride;
for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
{
gint k = col * 3;
tmprow[k + 0] = s[0];
tmprow[k + 1] = s[0];
tmprow[k + 2] = s[0];
tmparow[k] = 255 - s[1];
s += 2;
}
src += bpp * roi.width;
}
break;
case 3:
col = roi.x - x1;
for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
{
memcpy (p->col + row * rowstride + col * 3, src, roi.width * 3);
src += bpp * roi.width;
}
break;
case 4:
for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
{
const guchar *s = src;
guchar *tmprow = p->col + row * rowstride;
guchar *tmparow = inalpha.col + row * rowstride;
for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
{
gint k = col * 3;
tmprow[k + 0] = s[0];
tmprow[k + 1] = s[1];
tmprow[k + 2] = s[2];
tmparow[k] = 255 - s[3];
s += 4;
}
src += bpp * roi.width;
}
break;
}
}
g_object_unref (src_buffer);
}
static void
gimpressionist_main (void)
{
GeglBuffer *dest_buffer;
GeglBufferIterator *iter;
const Babl *format;
gint bpp;
ppm_t *p;
gint x1, y1;
gint x, y;
gint width, height;
gint row, col;
gint rowstride;
glong done = 0;
glong total;
if (! gimp_drawable_mask_intersect (drawable,
&x1, &y1, &width, &height))
return;
total = width * height;
format = get_u8_format (drawable);
bpp = babl_format_get_bytes_per_pixel (format);
gimp_progress_init (_("Painting"));
if (! PPM_IS_INITED (&infile))
grabarea ();
repaint (&infile, (img_has_alpha) ? &inalpha : NULL);
p = &infile;
rowstride = p->width * 3;
dest_buffer = gimp_drawable_get_shadow_buffer (drawable);
iter = gegl_buffer_iterator_new (dest_buffer,
GEGL_RECTANGLE (x1, y1, width, height), 0,
format,
GEGL_ACCESS_WRITE, GEGL_ABYSS_NONE, 1);
while (gegl_buffer_iterator_next (iter))
{
GeglRectangle roi = iter->items[0].roi;
guchar *dest = iter->items[0].data;
switch (bpp)
{
case 1:
for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
{
guchar *d = dest;
const guchar *tmprow = p->col + row * rowstride;
for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
{
gint k = col * 3;
*d++ = GIMP_RGB_LUMINANCE (tmprow[k + 0],
tmprow[k + 1],
tmprow[k + 2]);
}
dest += bpp * roi.width;
}
break;
case 2:
for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
{
guchar *d = dest;
const guchar *tmprow = p->col + row * rowstride;
const guchar *tmparow = inalpha.col + row * rowstride;
for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
{
gint k = col * 3;
gint value = GIMP_RGB_LUMINANCE (tmprow[k + 0],
tmprow[k + 1],
tmprow[k + 2]);
d[0] = value;
d[1] = 255 - tmparow[k];
d += 2;
}
dest += bpp * roi.width;
}
break;
case 3:
col = roi.x - x1;
for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
{
memcpy (dest, p->col + row * rowstride + col * 3, roi.width * 3);
dest += bpp * roi.width;
}
break;
case 4:
for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
{
guchar *d = dest;
const guchar *tmprow = p->col + row * rowstride;
const guchar *tmparow = inalpha.col + row * rowstride;
for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
{
gint k = col * 3;
d[0] = tmprow[k + 0];
d[1] = tmprow[k + 1];
d[2] = tmprow[k + 2];
d[3] = 255 - tmparow[k];
d += 4;
}
dest += bpp * roi.width;
}
break;
}
done += roi.width * roi.height;
gimp_progress_update (0.8 + 0.2 * done / total);
}
g_object_unref (dest_buffer);
gimp_progress_update (1.0);
gimp_drawable_merge_shadow (drawable, TRUE);
gimp_drawable_update (drawable, x1, y1, width, height);
}