mirror of https://github.com/GNOME/gimp.git
536 lines
14 KiB
C
536 lines
14 KiB
C
/* 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 <string.h>
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#include <gtk/gtk.h>
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#include <libgimp/gimp.h>
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#include "ppmtool.h"
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#include "infile.h"
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#include "gimpressionist.h"
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#include "preview.h"
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#include "brush.h"
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#include "presets.h"
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#include "random.h"
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#include "orientmap.h"
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#include "size.h"
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#include "libgimp/stdplugins-intl.h"
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static void query (void);
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static void run (const gchar *name,
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gint nparams,
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const GimpParam *param,
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gint *nreturn_vals,
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GimpParam **return_vals);
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static void gimpressionist_main (void);
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const GimpPlugInInfo PLUG_IN_INFO = {
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NULL, /* init_proc */
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NULL, /* quit_proc */
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query, /* query_proc */
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run /* run_proc */
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}; /* PLUG_IN_INFO */
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static gint32 drawable_id;
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static ppm_t infile = {0, 0, NULL};
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static ppm_t inalpha = {0, 0, NULL};
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void
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infile_copy_to_ppm (ppm_t * p)
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{
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if (!PPM_IS_INITED (&infile))
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grabarea ();
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ppm_copy (&infile, p);
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}
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void
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infile_copy_alpha_to_ppm (ppm_t * p)
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{
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ppm_copy (&inalpha, p);
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}
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MAIN ()
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static void
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query (void)
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{
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static const GimpParamDef args[] =
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{
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{ GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0) }" },
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{ GIMP_PDB_IMAGE, "image", "Input image" },
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{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
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{ GIMP_PDB_STRING, "preset", "Preset Name" },
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};
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gimp_install_procedure (PLUG_IN_PROC,
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N_("Performs various artistic operations"),
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"Performs various artistic operations on an image",
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"Vidar Madsen <vidar@prosalg.no>",
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"Vidar Madsen",
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PLUG_IN_VERSION,
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N_("_GIMPressionist..."),
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"RGB*, GRAY*",
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GIMP_PLUGIN,
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G_N_ELEMENTS (args), 0,
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args, NULL);
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gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Filters/Artistic");
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}
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static void
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gimpressionist_get_data (void)
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{
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restore_default_values ();
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gimp_get_data (PLUG_IN_PROC, &pcvals);
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}
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static void
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run (const gchar *name,
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gint nparams,
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const GimpParam *param,
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gint *nreturn_vals,
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GimpParam **return_vals)
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{
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static GimpParam values[2];
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GimpRunMode run_mode;
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GimpPDBStatusType status;
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gboolean with_specified_preset;
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gchar *preset_name = NULL;
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status = GIMP_PDB_SUCCESS;
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run_mode = param[0].data.d_int32;
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with_specified_preset = FALSE;
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if (nparams > 3)
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{
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preset_name = param[3].data.d_string;
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if (strcmp (preset_name, ""))
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{
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with_specified_preset = TRUE;
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}
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}
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values[0].type = GIMP_PDB_STATUS;
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values[0].data.d_status = status;
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*nreturn_vals = 1;
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*return_vals = values;
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INIT_I18N ();
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gegl_init (NULL, NULL);
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/* Get the active drawable info */
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drawable_id = param[2].data.d_drawable;
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img_has_alpha = gimp_drawable_has_alpha (drawable_id);
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random_generator = g_rand_new ();
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/*
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* Check precondition before we open a dialog: Is there a selection
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* that intersects, OR is there no selection (use entire drawable.)
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*/
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{
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gint x1, y1, width, height; /* Not used. */
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if (! gimp_drawable_mask_intersect (drawable_id,
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&x1, &y1, &width, &height))
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{
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values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
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*nreturn_vals = 2;
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values[1].type = GIMP_PDB_STRING;
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values[1].data.d_string = _("The selection does not intersect "
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"the active layer or mask.");
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return;
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}
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}
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switch (run_mode)
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{
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/*
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* Note: there's a limitation here. Running this plug-in before the
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* interactive plug-in was run will cause it to crash, because the
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* data is uninitialized.
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* */
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case GIMP_RUN_INTERACTIVE:
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case GIMP_RUN_NONINTERACTIVE:
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case GIMP_RUN_WITH_LAST_VALS:
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gimpressionist_get_data ();
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if (run_mode == GIMP_RUN_INTERACTIVE)
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{
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if (!create_gimpressionist ())
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return;
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}
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break;
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default:
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status = GIMP_PDB_EXECUTION_ERROR;
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break;
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}
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if ((status == GIMP_PDB_SUCCESS) &&
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(gimp_drawable_is_rgb (drawable_id) ||
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gimp_drawable_is_gray (drawable_id)))
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{
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if (with_specified_preset)
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{
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/* If select_preset fails - set to an error */
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if (select_preset (preset_name))
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{
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status = GIMP_PDB_EXECUTION_ERROR;
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}
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}
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/* It seems that the value of the run variable is stored in
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* the preset. I don't know if it's a bug or a feature, but
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* I just work here and am anxious to get a working version.
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* So I'm setting it to the correct value here.
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*
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* It also seems that defaultpcvals have this erroneous
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* value as well, so it gets set to FALSE as well. Thus it
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* is always set to TRUE upon a non-interactive run.
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* -- Shlomi Fish
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* */
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if (run_mode == GIMP_RUN_NONINTERACTIVE)
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{
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pcvals.run = TRUE;
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}
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if (status == GIMP_PDB_SUCCESS)
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{
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gimpressionist_main ();
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gimp_displays_flush ();
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if (run_mode == GIMP_RUN_INTERACTIVE)
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gimp_set_data (PLUG_IN_PROC,
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&pcvals,
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sizeof (gimpressionist_vals_t));
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}
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}
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else if (status == GIMP_PDB_SUCCESS)
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{
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status = GIMP_PDB_EXECUTION_ERROR;
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}
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/* Resources Cleanup */
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g_rand_free (random_generator);
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free_parsepath_cache ();
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brush_reload (NULL, NULL);
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preview_free_resources ();
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brush_free ();
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preset_free ();
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orientation_map_free_resources ();
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size_map_free_resources ();
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values[0].data.d_status = status;
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}
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static const Babl *
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get_u8_format (gint32 drawable_id)
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{
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if (gimp_drawable_is_rgb (drawable_id))
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{
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if (gimp_drawable_has_alpha (drawable_id))
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return babl_format ("R'G'B'A u8");
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else
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return babl_format ("R'G'B' u8");
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}
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else
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{
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if (gimp_drawable_has_alpha (drawable_id))
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return babl_format ("Y'A u8");
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else
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return babl_format ("Y' u8");
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}
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}
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void
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grabarea (void)
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{
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GeglBuffer *src_buffer;
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GeglBufferIterator *iter;
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const Babl *format;
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gint bpp;
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ppm_t *p;
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gint x1, y1;
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gint x, y;
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gint width, height;
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gint row, col;
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gint rowstride;
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if (! gimp_drawable_mask_intersect (drawable_id,
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&x1, &y1, &width, &height))
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return;
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ppm_new (&infile, width, height);
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p = &infile;
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format = get_u8_format (drawable_id);
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bpp = babl_format_get_bytes_per_pixel (format);
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if (gimp_drawable_has_alpha (drawable_id))
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ppm_new (&inalpha, width, height);
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rowstride = p->width * 3;
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src_buffer = gimp_drawable_get_buffer (drawable_id);
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iter = gegl_buffer_iterator_new (src_buffer,
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GEGL_RECTANGLE (x1, y1, width, height), 0,
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format,
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GEGL_ACCESS_READ, GEGL_ABYSS_NONE, 1);
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while (gegl_buffer_iterator_next (iter))
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{
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GeglRectangle roi = iter->items[0].roi;
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const guchar *src = iter->items[0].data;
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switch (bpp)
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{
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case 1:
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for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
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{
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const guchar *s = src;
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guchar *tmprow = p->col + row * rowstride;
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for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
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{
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gint k = col * 3;
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tmprow[k + 0] = s[0];
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tmprow[k + 1] = s[0];
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tmprow[k + 2] = s[0];
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s++;
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}
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src += bpp * roi.width;
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}
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break;
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case 2:
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for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
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{
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const guchar *s = src;
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guchar *tmprow = p->col + row * rowstride;
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guchar *tmparow = inalpha.col + row * rowstride;
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for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
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{
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gint k = col * 3;
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tmprow[k + 0] = s[0];
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tmprow[k + 1] = s[0];
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tmprow[k + 2] = s[0];
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tmparow[k] = 255 - s[1];
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s += 2;
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}
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src += bpp * roi.width;
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}
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break;
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case 3:
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col = roi.x - x1;
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for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
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{
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memcpy (p->col + row * rowstride + col * 3, src, roi.width * 3);
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src += bpp * roi.width;
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}
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break;
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case 4:
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for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
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{
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const guchar *s = src;
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guchar *tmprow = p->col + row * rowstride;
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guchar *tmparow = inalpha.col + row * rowstride;
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for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
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{
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gint k = col * 3;
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tmprow[k + 0] = s[0];
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tmprow[k + 1] = s[1];
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tmprow[k + 2] = s[2];
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tmparow[k] = 255 - s[3];
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s += 4;
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}
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src += bpp * roi.width;
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}
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break;
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}
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}
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g_object_unref (src_buffer);
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}
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static void
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gimpressionist_main (void)
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{
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GeglBuffer *dest_buffer;
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GeglBufferIterator *iter;
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const Babl *format;
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gint bpp;
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ppm_t *p;
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gint x1, y1;
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gint x, y;
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gint width, height;
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gint row, col;
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gint rowstride;
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glong done = 0;
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glong total;
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if (! gimp_drawable_mask_intersect (drawable_id,
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&x1, &y1, &width, &height))
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return;
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total = width * height;
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format = get_u8_format (drawable_id);
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bpp = babl_format_get_bytes_per_pixel (format);
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gimp_progress_init (_("Painting"));
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if (! PPM_IS_INITED (&infile))
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grabarea ();
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repaint (&infile, (img_has_alpha) ? &inalpha : NULL);
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p = &infile;
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rowstride = p->width * 3;
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dest_buffer = gimp_drawable_get_shadow_buffer (drawable_id);
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iter = gegl_buffer_iterator_new (dest_buffer,
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GEGL_RECTANGLE (x1, y1, width, height), 0,
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format,
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GEGL_ACCESS_WRITE, GEGL_ABYSS_NONE, 1);
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while (gegl_buffer_iterator_next (iter))
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{
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GeglRectangle roi = iter->items[0].roi;
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guchar *dest = iter->items[0].data;
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switch (bpp)
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{
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case 1:
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for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
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{
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guchar *d = dest;
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const guchar *tmprow = p->col + row * rowstride;
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for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
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{
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gint k = col * 3;
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*d++ = GIMP_RGB_LUMINANCE (tmprow[k + 0],
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tmprow[k + 1],
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tmprow[k + 2]);
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}
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dest += bpp * roi.width;
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}
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break;
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case 2:
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for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
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{
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guchar *d = dest;
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const guchar *tmprow = p->col + row * rowstride;
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const guchar *tmparow = inalpha.col + row * rowstride;
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for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
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{
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gint k = col * 3;
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gint value = GIMP_RGB_LUMINANCE (tmprow[k + 0],
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tmprow[k + 1],
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tmprow[k + 2]);
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d[0] = value;
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d[1] = 255 - tmparow[k];
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d += 2;
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}
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dest += bpp * roi.width;
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}
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break;
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case 3:
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col = roi.x - x1;
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for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
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{
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memcpy (dest, p->col + row * rowstride + col * 3, roi.width * 3);
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dest += bpp * roi.width;
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}
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break;
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case 4:
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for (y = 0, row = roi.y - y1; y < roi.height; y++, row++)
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{
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guchar *d = dest;
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const guchar *tmprow = p->col + row * rowstride;
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const guchar *tmparow = inalpha.col + row * rowstride;
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for (x = 0, col = roi.x - x1; x < roi.width; x++, col++)
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{
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gint k = col * 3;
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d[0] = tmprow[k + 0];
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d[1] = tmprow[k + 1];
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d[2] = tmprow[k + 2];
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d[3] = 255 - tmparow[k];
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d += 4;
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}
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dest += bpp * roi.width;
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}
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break;
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}
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done += roi.width * roi.height;
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gimp_progress_update (0.8 + 0.2 * done / total);
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}
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g_object_unref (dest_buffer);
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gimp_progress_update (1.0);
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gimp_drawable_merge_shadow (drawable_id, TRUE);
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gimp_drawable_update (drawable_id, x1, y1, width, height);
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}
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