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gimp/app/file-data/file-data-gbr.c

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/* 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 <cairo.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gegl.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpcolor/gimpcolor.h"
#include "libgimpconfig/gimpconfig.h"
#include "core/core-types.h"
#include "core/gimp.h"
#include "core/gimpbrush.h"
#include "core/gimpbrush-load.h"
#include "core/gimpbrush-private.h"
#include "core/gimpcontainer.h"
#include "core/gimpdrawable.h"
#include "core/gimpimage.h"
#include "core/gimpimage-merge.h"
#include "core/gimpimage-new.h"
#include "core/gimpimage-resize.h"
#include "core/gimplayer-new.h"
#include "core/gimpparamspecs.h"
#include "core/gimppickable.h"
#include "core/gimptempbuf.h"
#include "pdb/gimpprocedure.h"
#include "file-data-gbr.h"
#include "gimp-intl.h"
/* local function prototypes */
static GimpImage * file_gbr_brush_to_image (Gimp *gimp,
GimpBrush *brush);
static GimpBrush * file_gbr_image_to_brush (GimpImage *image,
GimpContext *context,
gint n_drawables,
GimpDrawable **drawables,
const gchar *name,
gdouble spacing);
/* public functions */
GimpValueArray *
file_gbr_load_invoker (GimpProcedure *procedure,
Gimp *gimp,
GimpContext *context,
GimpProgress *progress,
const GimpValueArray *args,
GError **error)
{
GimpValueArray *return_vals;
GimpImage *image = NULL;
GFile *file;
GInputStream *input;
GError *my_error = NULL;
gimp_set_busy (gimp);
file = g_value_get_object (gimp_value_array_index (args, 1));
input = G_INPUT_STREAM (g_file_read (file, NULL, &my_error));
if (input)
{
GimpBrush *brush = gimp_brush_load_brush (context, file, input, error);
if (brush)
{
image = file_gbr_brush_to_image (gimp, brush);
g_object_unref (brush);
}
g_object_unref (input);
}
else
{
g_propagate_prefixed_error (error, my_error,
_("Could not open '%s' for reading: "),
gimp_file_get_utf8_name (file));
}
return_vals = gimp_procedure_get_return_values (procedure, image != NULL,
error ? *error : NULL);
if (image)
g_value_set_object (gimp_value_array_index (return_vals, 1), image);
gimp_unset_busy (gimp);
return return_vals;
}
GimpValueArray *
file_gbr_save_invoker (GimpProcedure *procedure,
Gimp *gimp,
GimpContext *context,
GimpProgress *progress,
const GimpValueArray *args,
GError **error)
{
GimpValueArray *return_vals;
GimpImage *image;
GimpDrawable **drawables;
gint n_drawables;
GimpBrush *brush;
const gchar *name;
GFile *file;
gint spacing;
gboolean success;
gimp_set_busy (gimp);
image = g_value_get_object (gimp_value_array_index (args, 1));
n_drawables = g_value_get_int (gimp_value_array_index (args, 2));
drawables = (GimpDrawable **) gimp_value_get_object_array (gimp_value_array_index (args, 3));
file = g_value_get_object (gimp_value_array_index (args, 4));
spacing = g_value_get_int (gimp_value_array_index (args, 5));
name = g_value_get_string (gimp_value_array_index (args, 6));
brush = file_gbr_image_to_brush (image, context, n_drawables, drawables, name, spacing);
gimp_data_set_file (GIMP_DATA (brush), file, TRUE, TRUE);
success = gimp_data_save (GIMP_DATA (brush), error);
g_object_unref (brush);
return_vals = gimp_procedure_get_return_values (procedure, success,
error ? *error : NULL);
gimp_unset_busy (gimp);
return return_vals;
}
GimpLayer *
file_gbr_brush_to_layer (GimpImage *image,
GimpBrush *brush)
{
GimpLayer *layer;
const Babl *format;
gboolean alpha;
gint width;
gint height;
gint image_width;
gint image_height;
GimpTempBuf *mask;
GimpTempBuf *pixmap;
GeglBuffer *buffer;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (GIMP_IS_BRUSH (brush), NULL);
mask = gimp_brush_get_mask (brush);
pixmap = gimp_brush_get_pixmap (brush);
if (pixmap)
alpha = TRUE;
else
alpha = FALSE;
width = gimp_temp_buf_get_width (mask);
height = gimp_temp_buf_get_height (mask);
image_width = gimp_image_get_width (image);
image_height = gimp_image_get_height (image);
if (width > image_width || height > image_height)
{
gint new_width = MAX (image_width, width);
gint new_height = MAX (image_height, height);
gimp_image_resize (image, gimp_get_user_context (image->gimp),
new_width, new_height,
(new_width - image_width) / 2,
(new_height - image_height) / 2,
NULL);
image_width = new_width;
image_height = new_height;
}
format = gimp_image_get_layer_format (image, alpha);
layer = gimp_layer_new (image, width, height, format,
gimp_object_get_name (brush),
1.0, GIMP_LAYER_MODE_NORMAL);
gimp_item_set_offset (GIMP_ITEM (layer),
(image_width - width) / 2,
(image_height - height) / 2);
buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (layer));
if (pixmap)
{
guchar *pixmap_data;
guchar *mask_data;
guchar *p;
guchar *m;
gint i;
gegl_buffer_set (buffer, GEGL_RECTANGLE (0, 0, width, height), 0,
babl_format ("R'G'B' u8"),
gimp_temp_buf_get_data (pixmap), GEGL_AUTO_ROWSTRIDE);
pixmap_data = gegl_buffer_linear_open (buffer, NULL, NULL, NULL);
mask_data = gimp_temp_buf_get_data (mask);
for (i = 0, p = pixmap_data, m = mask_data;
i < width * height;
i++, p += 4, m += 1)
{
p[3] = *m;
}
gegl_buffer_linear_close (buffer, pixmap_data);
}
else
{
guchar *mask_data = gimp_temp_buf_get_data (mask);
gint i;
for (i = 0; i < width * height; i++)
mask_data[i] = 255 - mask_data[i];
gegl_buffer_set (buffer, GEGL_RECTANGLE (0, 0, width, height), 0,
babl_format ("Y' u8"),
mask_data, GEGL_AUTO_ROWSTRIDE);
}
return layer;
}
GimpBrush *
file_gbr_drawable_to_brush (GimpDrawable *drawable,
const GeglRectangle *rect,
const gchar *name,
gdouble spacing)
{
GimpBrush *brush;
GeglBuffer *buffer;
GimpTempBuf *mask;
GimpTempBuf *pixmap = NULL;
gint width;
gint height;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
g_return_val_if_fail (rect != NULL, NULL);
buffer = gimp_drawable_get_buffer (drawable);
width = rect->width;
height = rect->height;
brush = g_object_new (GIMP_TYPE_BRUSH,
"name", name,
"mime-type", "image/x-gimp-gbr",
"spacing", spacing,
NULL);
mask = gimp_temp_buf_new (width, height, babl_format ("Y u8"));
if (gimp_drawable_is_gray (drawable))
{
guchar *m = gimp_temp_buf_get_data (mask);
gint i;
if (gimp_drawable_has_alpha (drawable))
{
GeglBufferIterator *iter;
GimpRGB white;
gimp_rgba_set_uchar (&white, 255, 255, 255, 255);
iter = gegl_buffer_iterator_new (buffer, rect, 0,
babl_format ("Y'A u8"),
GEGL_ACCESS_READ, GEGL_ABYSS_NONE,
1);
while (gegl_buffer_iterator_next (iter))
{
guint8 *data = (guint8 *) iter->items[0].data;
gint j;
for (j = 0; j < iter->length; j++)
{
GimpRGB gray;
gint x, y;
gint dest;
gimp_rgba_set_uchar (&gray,
data[0], data[0], data[0],
data[1]);
gimp_rgb_composite (&gray, &white,
GIMP_RGB_COMPOSITE_BEHIND);
x = iter->items[0].roi.x + j % iter->items[0].roi.width;
y = iter->items[0].roi.y + j / iter->items[0].roi.width;
dest = y * width + x;
gimp_rgba_get_uchar (&gray, &m[dest], NULL, NULL, NULL);
data += 2;
}
}
}
else
{
gegl_buffer_get (buffer, rect, 1.0,
babl_format ("Y' u8"), m,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
}
/* invert */
for (i = 0; i < width * height; i++)
m[i] = 255 - m[i];
}
else
{
pixmap = gimp_temp_buf_new (width, height, babl_format ("R'G'B' u8"));
gegl_buffer_get (buffer, rect, 1.0,
babl_format ("R'G'B' u8"),
gimp_temp_buf_get_data (pixmap),
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
gegl_buffer_get (buffer, rect, 1.0,
babl_format ("A u8"),
gimp_temp_buf_get_data (mask),
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
}
brush->priv->mask = mask;
brush->priv->pixmap = pixmap;
return brush;
}
/* private functions */
static GimpImage *
file_gbr_brush_to_image (Gimp *gimp,
GimpBrush *brush)
{
GimpImage *image;
GimpLayer *layer;
GimpImageBaseType base_type;
gint width;
gint height;
GimpTempBuf *mask = gimp_brush_get_mask (brush);
GimpTempBuf *pixmap = gimp_brush_get_pixmap (brush);
GString *string;
GimpConfigWriter *writer;
GimpParasite *parasite;
if (pixmap)
base_type = GIMP_RGB;
else
base_type = GIMP_GRAY;
width = gimp_temp_buf_get_width (mask);
height = gimp_temp_buf_get_height (mask);
image = gimp_image_new (gimp, width, height, base_type,
GIMP_PRECISION_U8_NON_LINEAR);
string = g_string_new (NULL);
writer = gimp_config_writer_new_from_string (string);
gimp_config_writer_open (writer, "spacing");
gimp_config_writer_printf (writer, "%d", gimp_brush_get_spacing (brush));
gimp_config_writer_close (writer);
gimp_config_writer_linefeed (writer);
gimp_config_writer_open (writer, "description");
gimp_config_writer_string (writer, gimp_object_get_name (brush));
gimp_config_writer_close (writer);
gimp_config_writer_finish (writer, NULL, NULL);
parasite = gimp_parasite_new ("GimpProcedureConfig-file-gbr-save-last",
GIMP_PARASITE_PERSISTENT,
string->len + 1, string->str);
gimp_image_parasite_attach (image, parasite, FALSE);
gimp_parasite_free (parasite);
g_string_free (string, TRUE);
layer = file_gbr_brush_to_layer (image, brush);
gimp_image_add_layer (image, layer, NULL, 0, FALSE);
return image;
}
static GimpBrush *
file_gbr_image_to_brush (GimpImage *image,
GimpContext *context,
gint n_drawables,
GimpDrawable **drawables,
const gchar *name,
gdouble spacing)
{
GimpBrush *brush;
GimpImage *subimage = NULL;
GimpDrawable *drawable;
gint width;
gint height;
g_return_val_if_fail (n_drawables > 0, NULL);
g_return_val_if_fail (drawables != NULL, NULL);
if (n_drawables > 1)
{
GList *drawable_list = NULL;
for (gint i = 0; i < n_drawables; i++)
drawable_list = g_list_prepend (drawable_list, drawables[i]);
subimage = gimp_image_new_from_drawables (image->gimp, drawable_list, FALSE, FALSE);
g_list_free (drawable_list);
gimp_container_remove (image->gimp->images, GIMP_OBJECT (subimage));
gimp_image_resize_to_layers (subimage, context,
NULL, NULL, NULL, NULL, NULL);
drawable = GIMP_DRAWABLE (gimp_image_merge_visible_layers (subimage, context, GIMP_CLIP_TO_IMAGE,
FALSE, TRUE, NULL));
gimp_pickable_flush (GIMP_PICKABLE (subimage));
}
else
{
drawable = drawables[0];
}
width = gimp_item_get_width (GIMP_ITEM (drawable));
height = gimp_item_get_height (GIMP_ITEM (drawable));
brush = file_gbr_drawable_to_brush (drawable,
GEGL_RECTANGLE (0, 0, width, height),
name, spacing);
g_clear_object (&subimage);
return brush;
}
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