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PIKApp/plug-ins/common/guillotine.c

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/*
* Guillotine plug-in v0.9 by Adam D. Moss, adam@foxbox.org. 1998/09/01
*/
/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* 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 <libpika/pika.h>
#include "libpika/stdplugins-intl.h"
#define PLUG_IN_PROC "plug-in-guillotine"
typedef struct _Guillotine Guillotine;
typedef struct _GuillotineClass GuillotineClass;
struct _Guillotine
{
PikaPlugIn parent_instance;
};
struct _GuillotineClass
{
PikaPlugInClass parent_class;
};
#define GUILLOTINE_TYPE (guillotine_get_type ())
#define GUILLOTINE (obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GUILLOTINE_TYPE, Guillotine))
GType guillotine_get_type (void) G_GNUC_CONST;
static GList * guillotine_query_procedures (PikaPlugIn *plug_in);
static PikaProcedure * guillotine_create_procedure (PikaPlugIn *plug_in,
const gchar *name);
static PikaValueArray * guillotine_run (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
const PikaValueArray *args,
gpointer run_data);
static GList * guillotine (PikaImage *image,
gboolean interactive);
G_DEFINE_TYPE (Guillotine, guillotine, PIKA_TYPE_PLUG_IN)
PIKA_MAIN (GUILLOTINE_TYPE)
DEFINE_STD_SET_I18N
static void
guillotine_class_init (GuillotineClass *klass)
{
PikaPlugInClass *plug_in_class = PIKA_PLUG_IN_CLASS (klass);
plug_in_class->query_procedures = guillotine_query_procedures;
plug_in_class->create_procedure = guillotine_create_procedure;
plug_in_class->set_i18n = STD_SET_I18N;
}
static void
guillotine_init (Guillotine *film)
{
}
static GList *
guillotine_query_procedures (PikaPlugIn *plug_in)
{
return g_list_append (NULL, g_strdup (PLUG_IN_PROC));
}
static PikaProcedure *
guillotine_create_procedure (PikaPlugIn *plug_in,
const gchar *name)
{
PikaProcedure *procedure = NULL;
if (! strcmp (name, PLUG_IN_PROC))
{
procedure = pika_image_procedure_new (plug_in, name,
PIKA_PDB_PROC_TYPE_PLUGIN,
guillotine_run, NULL, NULL);
pika_procedure_set_image_types (procedure, "*");
pika_procedure_set_sensitivity_mask (procedure,
PIKA_PROCEDURE_SENSITIVE_DRAWABLE |
PIKA_PROCEDURE_SENSITIVE_DRAWABLES |
PIKA_PROCEDURE_SENSITIVE_NO_DRAWABLES);
pika_procedure_set_menu_label (procedure, _("Slice Using G_uides"));
pika_procedure_add_menu_path (procedure, "<Image>/Image/[Crop]");
pika_procedure_set_documentation (procedure,
_("Slice the image into subimages "
"using guides"),
"This function takes an image and "
"slices it along its guides, creating "
"new images. The original image is "
"not modified.",
name);
pika_procedure_set_attribution (procedure,
"Adam D. Moss (adam@foxbox.org)",
"Adam D. Moss (adam@foxbox.org)",
"1998");
PIKA_PROC_VAL_INT (procedure, "image-count",
"Number of images created",
"Number of images created",
0, G_MAXINT, 0,
G_PARAM_READWRITE);
PIKA_PROC_VAL_OBJECT_ARRAY (procedure, "images",
"Output images",
"Output images",
PIKA_TYPE_IMAGE,
G_PARAM_READWRITE);
}
return procedure;
}
static PikaValueArray *
guillotine_run (PikaProcedure *procedure,
PikaRunMode run_mode,
PikaImage *image,
gint n_drawables,
PikaDrawable **drawables,
const PikaValueArray *args,
gpointer run_data)
{
PikaValueArray *return_vals = NULL;
PikaPDBStatusType status = PIKA_PDB_SUCCESS;
return_vals = pika_procedure_new_return_values (procedure, status,
NULL);
if (status == PIKA_PDB_SUCCESS)
{
GList *image_list;
GList *list;
PikaImage **images;
gint num_images;
gint i;
pika_progress_init (_("Guillotine"));
image_list = guillotine (image, run_mode == PIKA_RUN_INTERACTIVE);
num_images = g_list_length (image_list);
images = g_new (PikaImage *, num_images);
for (list = image_list, i = 0;
list;
list = g_list_next (list), i++)
{
images[i] = g_object_ref (list->data);
}
g_list_free (image_list);
PIKA_VALUES_SET_INT (return_vals, 1, num_images);
PIKA_VALUES_TAKE_OBJECT_ARRAY (return_vals, 2, PIKA_TYPE_IMAGE, images, num_images);
if (run_mode == PIKA_RUN_INTERACTIVE)
pika_displays_flush ();
}
return return_vals;
}
static gint
guide_sort_func (gconstpointer a,
gconstpointer b)
{
return GPOINTER_TO_INT (a) - GPOINTER_TO_INT (b);
}
static GList *
guillotine (PikaImage *image,
gboolean interactive)
{
GList *images = NULL;
gint guide;
gint image_width;
gint image_height;
gboolean guides_found = FALSE;
GList *hguides, *hg;
GList *vguides, *vg;
image_width = pika_image_get_width (image);
image_height = pika_image_get_height (image);
hguides = g_list_append (NULL, GINT_TO_POINTER (0));
hguides = g_list_append (hguides, GINT_TO_POINTER (image_height));
vguides = g_list_append (NULL, GINT_TO_POINTER (0));
vguides = g_list_append (vguides, GINT_TO_POINTER (image_width));
for (guide = pika_image_find_next_guide (image, 0);
guide > 0;
guide = pika_image_find_next_guide (image, guide))
{
gint position = pika_image_get_guide_position (image, guide);
switch (pika_image_get_guide_orientation (image, guide))
{
case PIKA_ORIENTATION_HORIZONTAL:
if (! g_list_find (hguides, GINT_TO_POINTER (position)))
{
hguides = g_list_insert_sorted (hguides,
GINT_TO_POINTER (position),
guide_sort_func);
guides_found = TRUE;
}
break;
case PIKA_ORIENTATION_VERTICAL:
if (! g_list_find (vguides, GINT_TO_POINTER (position)))
{
vguides = g_list_insert_sorted (vguides,
GINT_TO_POINTER (position),
guide_sort_func);
guides_found = TRUE;
}
break;
case PIKA_ORIENTATION_UNKNOWN:
g_assert_not_reached ();
break;
}
}
if (guides_found)
{
GFile *file;
gint h, v, hpad, vpad;
gint x, y;
gchar *hformat;
gchar *format;
file = pika_image_get_file (image);
if (! file)
file = g_file_new_for_uri (_("Untitled"));
/* get the number horizontal and vertical slices */
h = g_list_length (hguides);
v = g_list_length (vguides);
/* need the number of digits of h and v for the padding */
hpad = log10(h) + 1;
vpad = log10(v) + 1;
/* format for the x-y coordinates in the filename */
hformat = g_strdup_printf ("%%0%i", MAX (hpad, vpad));
format = g_strdup_printf ("-%si-%si", hformat, hformat);
/* Do the actual dup'ing and cropping... this isn't a too naive a
* way to do this since we got copy-on-write tiles, either.
*/
for (y = 0, hg = hguides; hg && hg->next; y++, hg = hg->next)
{
for (x = 0, vg = vguides; vg && vg->next; x++, vg = vg->next)
{
PikaImage *new_image = pika_image_duplicate (image);
GString *new_uri;
GFile *new_file;
gchar *fileextension;
gchar *fileindex;
if (! new_image)
{
g_warning ("Couldn't create new image.");
g_free (hformat);
g_free (format);
return images;
}
pika_image_undo_disable (new_image);
pika_image_crop (new_image,
GPOINTER_TO_INT (vg->next->data) -
GPOINTER_TO_INT (vg->data),
GPOINTER_TO_INT (hg->next->data) -
GPOINTER_TO_INT (hg->data),
GPOINTER_TO_INT (vg->data),
GPOINTER_TO_INT (hg->data));
new_uri = g_string_new (g_file_get_uri (file));
/* show the rough coordinates of the image in the title */
fileindex = g_strdup_printf (format, x, y);
/* get the position of the file extension - last . in filename */
fileextension = strrchr (new_uri->str, '.');
if (fileextension)
{
gint pos;
/* Truncate the extension. */
pos = fileextension - new_uri->str;
g_string_truncate (new_uri, pos);
}
/* insert the coordinates before the extension */
g_string_append (new_uri, fileindex);
g_free (fileindex);
g_string_append (new_uri, ".xcf");
new_file = g_file_new_for_uri (new_uri->str);
g_string_free (new_uri, TRUE);
pika_image_set_file (new_image, new_file);
g_object_unref (new_file);
while ((guide = pika_image_find_next_guide (new_image, 0)))
pika_image_delete_guide (new_image, guide);
pika_image_undo_enable (new_image);
if (interactive)
pika_display_new (new_image);
images = g_list_prepend (images, GINT_TO_POINTER (new_image));
}
}
g_object_unref (file);
g_free (hformat);
g_free (format);
}
g_list_free (hguides);
g_list_free (vguides);
return g_list_reverse (images);
}
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