344 lines
10 KiB
C
344 lines
10 KiB
C
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/* GIMP - The GNU 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 3 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, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <cairo.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gegl.h>
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#include "libgimpbase/gimpbase.h"
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#include "libgimpbase/gimpparasiteio.h"
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#include "libgimpcolor/gimpcolor.h"
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#include "core/core-types.h"
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#include "core/gimp.h"
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#include "core/gimpbrushpipe.h"
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#include "core/gimpbrushpipe-load.h"
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#include "core/gimpbrush-private.h"
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#include "core/gimpdrawable.h"
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#include "core/gimpimage.h"
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#include "core/gimplayer-new.h"
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#include "core/gimpparamspecs.h"
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#include "core/gimptempbuf.h"
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#include "pdb/gimpprocedure.h"
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#include "file-data-gbr.h"
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#include "file-data-gih.h"
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#include "gimp-intl.h"
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/* local function prototypes */
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static GimpImage * file_gih_pipe_to_image (Gimp *gimp,
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GimpBrushPipe *pipe);
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static GimpBrushPipe * file_gih_image_to_pipe (GimpImage *image,
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GimpDrawable *drawable,
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const gchar *name,
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gdouble spacing);
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/* public functions */
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GimpValueArray *
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file_gih_load_invoker (GimpProcedure *procedure,
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Gimp *gimp,
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GimpContext *context,
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GimpProgress *progress,
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const GimpValueArray *args,
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GError **error)
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{
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GimpValueArray *return_vals;
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GimpImage *image = NULL;
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const gchar *uri;
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GFile *file;
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GInputStream *input;
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GError *my_error = NULL;
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gimp_set_busy (gimp);
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uri = g_value_get_string (gimp_value_array_index (args, 1));
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file = g_file_new_for_uri (uri);
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input = G_INPUT_STREAM (g_file_read (file, NULL, &my_error));
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if (input)
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{
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GList *list = gimp_brush_pipe_load (context, file, input, error);
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if (list)
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{
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GimpBrushPipe *pipe = list->data;
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g_list_free (list);
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image = file_gih_pipe_to_image (gimp, pipe);
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g_object_unref (pipe);
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}
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g_object_unref (input);
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}
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else
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{
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g_propagate_prefixed_error (error, my_error,
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_("Could not open '%s' for reading: "),
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gimp_file_get_utf8_name (file));
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}
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g_object_unref (file);
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return_vals = gimp_procedure_get_return_values (procedure, image != NULL,
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error ? *error : NULL);
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if (image)
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gimp_value_set_image (gimp_value_array_index (return_vals, 1), image);
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gimp_unset_busy (gimp);
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return return_vals;
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}
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GimpValueArray *
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file_gih_save_invoker (GimpProcedure *procedure,
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Gimp *gimp,
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GimpContext *context,
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GimpProgress *progress,
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const GimpValueArray *args,
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GError **error)
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{
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GimpValueArray *return_vals;
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GimpImage *image;
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GimpDrawable *drawable;
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GimpBrushPipe *pipe;
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const gchar *uri;
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const gchar *name;
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GFile *file;
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gint spacing;
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gboolean success;
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gimp_set_busy (gimp);
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image = gimp_value_get_image (gimp_value_array_index (args, 1), gimp);
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drawable = gimp_value_get_drawable (gimp_value_array_index (args, 2), gimp);
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uri = g_value_get_string (gimp_value_array_index (args, 3));
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spacing = g_value_get_int (gimp_value_array_index (args, 5));
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name = g_value_get_string (gimp_value_array_index (args, 6));
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file = g_file_new_for_uri (uri);
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pipe = file_gih_image_to_pipe (image, drawable, name, spacing);
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gimp_data_set_file (GIMP_DATA (pipe), file, TRUE, TRUE);
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success = gimp_data_save (GIMP_DATA (pipe), error);
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g_object_unref (pipe);
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g_object_unref (file);
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return_vals = gimp_procedure_get_return_values (procedure, success,
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error ? *error : NULL);
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gimp_unset_busy (gimp);
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return return_vals;
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}
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/* private functions */
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static GimpImage *
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file_gih_pipe_to_image (Gimp *gimp,
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GimpBrushPipe *pipe)
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{
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GimpImage *image;
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const gchar *name;
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GimpImageBaseType base_type;
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GimpParasite *parasite;
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gint i;
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if (gimp_brush_get_pixmap (pipe->current))
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base_type = GIMP_RGB;
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else
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base_type = GIMP_GRAY;
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name = gimp_object_get_name (pipe);
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image = gimp_image_new (gimp, 1, 1, base_type,
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GIMP_PRECISION_U8_GAMMA);
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parasite = gimp_parasite_new ("gimp-brush-pipe-name",
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GIMP_PARASITE_PERSISTENT,
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strlen (name) + 1, name);
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gimp_image_parasite_attach (image, parasite);
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gimp_parasite_free (parasite);
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for (i = 0; i < pipe->n_brushes; i++)
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{
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GimpLayer *layer;
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layer = file_gbr_brush_to_layer (image, pipe->brushes[i]);
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gimp_image_add_layer (image, layer, NULL, i, FALSE);
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}
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if (pipe->params)
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{
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GimpPixPipeParams params;
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gchar *paramstring;
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/* Since we do not (yet) load the pipe as described in the
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* header, but use one layer per brush, we have to alter the
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* paramstring before attaching it as a parasite.
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*
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* (this comment copied over from file-gih, whatever "as
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* described in the header" means) -- mitch
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*/
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gimp_pixpipe_params_init (¶ms);
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gimp_pixpipe_params_parse (pipe->params, ¶ms);
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params.cellwidth = gimp_image_get_width (image);
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params.cellheight = gimp_image_get_height (image);
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params.cols = 1;
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params.rows = 1;
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paramstring = gimp_pixpipe_params_build (¶ms);
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if (paramstring)
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{
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parasite = gimp_parasite_new ("gimp-brush-pipe-parameters",
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GIMP_PARASITE_PERSISTENT,
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strlen (paramstring) + 1,
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paramstring);
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gimp_image_parasite_attach (image, parasite);
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gimp_parasite_free (parasite);
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g_free (paramstring);
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}
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}
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return image;
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}
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static GimpBrushPipe *
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file_gih_image_to_pipe (GimpImage *image,
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GimpDrawable *drawable,
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const gchar *name,
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gdouble spacing)
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{
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#if 0
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GimpBrush *brush;
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GeglBuffer *buffer;
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GimpTempBuf *mask;
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GimpTempBuf *pixmap = NULL;
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gint width;
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gint height;
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buffer = gimp_drawable_get_buffer (drawable);
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width = gimp_item_get_width (GIMP_ITEM (drawable));
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height = gimp_item_get_height (GIMP_ITEM (drawable));
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brush = g_object_new (GIMP_TYPE_BRUSH,
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"name", name,
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"mime-type", "image/x-gimp-gih",
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"spacing", spacing,
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NULL);
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mask = gimp_temp_buf_new (width, height, babl_format ("Y u8"));
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if (gimp_drawable_is_gray (drawable))
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{
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guchar *m = gimp_temp_buf_get_data (mask);
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gint i;
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if (gimp_drawable_has_alpha (drawable))
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{
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GeglBufferIterator *iter;
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GimpRGB white;
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gimp_rgba_set_uchar (&white, 255, 255, 255, 255);
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iter = gegl_buffer_iterator_new (buffer, NULL, 0,
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babl_format ("Y'A u8"),
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GEGL_ACCESS_READ, GEGL_ABYSS_NONE,
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1);
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while (gegl_buffer_iterator_next (iter))
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{
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guint8 *data = (guint8 *) iter->items[0].data;
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gint j;
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for (j = 0; j < iter->length; j++)
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{
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GimpRGB gray;
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gint x, y;
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gint dest;
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gimp_rgba_set_uchar (&gray,
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data[0], data[0], data[0],
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data[1]);
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gimp_rgb_composite (&gray, &white,
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GIMP_RGB_COMPOSITE_BEHIND);
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x = iter->items[0].roi.x + j % iter->items[0].roi.width;
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y = iter->items[0].roi.y + j / iter->items[0].roi.width;
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dest = y * width + x;
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gimp_rgba_get_uchar (&gray, &m[dest], NULL, NULL, NULL);
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data += 2;
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}
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}
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}
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else
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{
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gegl_buffer_get (buffer, GEGL_RECTANGLE (0, 0, width, height), 1.0,
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babl_format ("Y' u8"), m,
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GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
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}
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/* invert */
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for (i = 0; i < width * height; i++)
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m[i] = 255 - m[i];
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}
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else
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{
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pixmap = gimp_temp_buf_new (width, height, babl_format ("R'G'B' u8"));
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gegl_buffer_get (buffer, GEGL_RECTANGLE (0, 0, width, height), 1.0,
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babl_format ("R'G'B' u8"),
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gimp_temp_buf_get_data (pixmap),
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GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
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gegl_buffer_get (buffer, GEGL_RECTANGLE (0, 0, width, height), 1.0,
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babl_format ("A u8"),
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gimp_temp_buf_get_data (mask),
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GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
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}
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brush->priv->mask = mask;
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brush->priv->pixmap = pixmap;
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return brush;
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#endif
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return NULL;
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}
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