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- /* borderaverage 0.01 - image processing plug-in for the Gimp 1.0 API
- *
- * Copyright (C) 1998 Philipp Klaus (webmaster@access.ch)
- *
- *
- * 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 2 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
- #include "config.h"
-
- #include <stdlib.h>
-
- #include <gtk/gtk.h>
-
- #include <libgimp/gimp.h>
- #include <libgimp/gimpui.h>
-
- #include "libgimp/stdplugins-intl.h"
-
-
- /* Declare local functions.
- */
- static void query (void);
- static void run (gchar *name,
- gint nparams,
- GimpParam *param,
- gint *nreturn_vals,
- GimpParam **return_vals);
-
- static void borderaverage (GimpDrawable *drawable,
- guchar *res_r,
- guchar *res_g,
- guchar *res_b);
-
- static gint borderaverage_dialog (void);
-
- static void add_new_color (gint bytes,
- guchar *buffer,
- gint *cube,
- gint bucket_expo);
-
- GimpPlugInInfo PLUG_IN_INFO =
- {
- NULL, /* init */
- NULL, /* quit */
- query, /* query */
- run, /* run */
- };
-
- static gint borderaverage_thickness = 3;
- static gint borderaverage_bucket_exponent = 4;
-
- struct borderaverage_data
- {
- gint thickness;
- gint bucket_exponent;
- }
- borderaverage_data =
- {
- 3,
- 4
- };
-
-
- MAIN ()
-
- static void
- query (void)
- {
- static GimpParamDef args[] =
- {
- { GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
- { GIMP_PDB_IMAGE, "image", "Input image (unused)" },
- { GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
- { GIMP_PDB_INT32, "thickness", "Border size to take in count" },
- { GIMP_PDB_INT32, "bucket_exponent", "Bits for bucket size (default=4: 16 Levels)" },
- };
- static GimpParamDef return_vals[] =
- {
- { GIMP_PDB_INT32, "num_channels", "Number of color channels returned (always 3)" },
- { GIMP_PDB_INT8ARRAY, "color_vals", "The average color of the specified border"},
- };
- static int nargs = sizeof (args) / sizeof (args[0]);
- static int nreturn_vals = sizeof (return_vals) / sizeof (return_vals[0]);
-
- INIT_I18N();
-
- gimp_install_procedure ("plug_in_borderaverage",
- "Borderaverage",
- "",
- "Philipp Klaus",
- "Internet Access AG",
- "1998",
- N_("<Image>/Filters/Colors/Border Average..."),
- "RGB*",
- GIMP_PLUGIN,
- nargs, nreturn_vals,
- args, return_vals);
- }
-
- static void
- run (gchar *name,
- gint nparams,
- GimpParam *param,
- gint *nreturn_vals,
- GimpParam **return_vals)
- {
- static GimpParam values[3];
- GimpDrawable *drawable;
- GimpRunModeType run_mode;
- GimpPDBStatusType status = GIMP_PDB_SUCCESS;
- gint8 *result_color;
-
- INIT_I18N_UI();
-
- run_mode = param[0].data.d_int32;
-
- /* get the return memory */
- result_color = (gint8 *) g_new(gint8, 3);
-
- /* Get the specified drawable */
- drawable = gimp_drawable_get (param[2].data.d_drawable);
-
- switch (run_mode)
- {
- case GIMP_RUN_INTERACTIVE:
- gimp_get_data ("plug_in_borderaverage", &borderaverage_data);
- borderaverage_thickness = borderaverage_data.thickness;
- borderaverage_bucket_exponent = borderaverage_data.bucket_exponent;
- if (! borderaverage_dialog ())
- status = GIMP_PDB_EXECUTION_ERROR;
- break;
-
- case GIMP_RUN_NONINTERACTIVE:
- if (nparams != 5)
- status = GIMP_PDB_CALLING_ERROR;
- if (status == GIMP_PDB_SUCCESS)
- {
- borderaverage_thickness = param[3].data.d_int32;
- borderaverage_bucket_exponent = param[4].data.d_int32;
- }
- break;
-
- case GIMP_RUN_WITH_LAST_VALS:
- gimp_get_data ("plug_in_borderaverage", &borderaverage_data);
- borderaverage_thickness = borderaverage_data.thickness;
- borderaverage_bucket_exponent = borderaverage_data.bucket_exponent;
- break;
-
- default:
- break;
- }
-
- if (status == GIMP_PDB_SUCCESS)
- {
- /* Make sure that the drawable is RGB color */
- if (gimp_drawable_is_rgb (drawable->id))
- {
- gimp_progress_init ( _("Border Average..."));
- borderaverage (drawable,
- &result_color[0], &result_color[1], &result_color[2]);
-
- if (run_mode != GIMP_RUN_NONINTERACTIVE)
- {
- gimp_palette_set_foreground (result_color[0],
- result_color[1],
- result_color[2]);
- }
- if (run_mode == GIMP_RUN_INTERACTIVE)
- {
- borderaverage_data.thickness = borderaverage_thickness;
- borderaverage_data.bucket_exponent = borderaverage_bucket_exponent;
- gimp_set_data ("plug_in_borderaverage",
- &borderaverage_data, sizeof (borderaverage_data));
- }
- }
- else
- {
- status = GIMP_PDB_EXECUTION_ERROR;
- }
- }
- *nreturn_vals = 3;
- *return_vals = values;
-
- values[0].type = GIMP_PDB_STATUS;
- values[0].data.d_status = status;
-
- values[1].type = GIMP_PDB_INT32;
- values[1].data.d_int32 = 3;
-
- values[2].type = GIMP_PDB_INT8ARRAY;
- values[2].data.d_int8array = result_color;
-
- gimp_drawable_detach (drawable);
- }
-
- static void
- borderaverage (GimpDrawable *drawable,
- guchar *res_r,
- guchar *res_g,
- guchar *res_b)
- {
- gint width;
- gint height;
- gint x1, x2, y1, y2;
- gint bytes;
- gint max;
-
- guchar r, g, b;
-
- guchar *buffer;
- gint bucket_num, bucket_expo, bucket_rexpo;
-
- gint *cube;
-
- gint row, col, i,j,k; /* index variables */
-
- GimpPixelRgn myPR;
-
- /* allocate and clear the cube before */
- bucket_expo = borderaverage_bucket_exponent;
- bucket_rexpo = 8 - bucket_expo;
- cube = g_new (gint, 1 << (bucket_rexpo * 3));
- bucket_num = 1 << bucket_rexpo;
-
- for (i = 0; i < bucket_num; i++)
- {
- for (j = 0; j < bucket_num; j++)
- {
- for (k = 0; k < bucket_num; k++)
- {
- cube[(i << (bucket_rexpo << 1)) + (j << bucket_rexpo) + k] = 0;
- }
- }
- }
-
- /* Get the input area. This is the bounding box of the selection in
- * the image (or the entire image if there is no selection). Only
- * operating on the input area is simply an optimization. It doesn't
- * need to be done for correct operation. (It simply makes it go
- * faster, since fewer pixels need to be operated on).
- */
- gimp_drawable_mask_bounds (drawable->id, &x1, &y1, &x2, &y2);
-
- /* Get the size of the input image. (This will/must be the same
- * as the size of the output image.
- */
- width = drawable->width;
- height = drawable->height;
- bytes = drawable->bpp;
-
- /* allocate row buffer */
- buffer = g_new (guchar, (x2 - x1) * bytes);
-
- /* initialize the pixel regions */
- gimp_pixel_rgn_init (&myPR, drawable, 0, 0, width, height, FALSE, FALSE);
-
- /* loop through the rows, performing our magic*/
- for (row = y1; row < y2; row++)
- {
- gimp_pixel_rgn_get_row (&myPR, buffer, x1, row, (x2-x1));
-
- if (row < y1 + borderaverage_thickness ||
- row >= y2 - borderaverage_thickness)
- {
- /* add the whole row */
- for (col = 0; col < ((x2 - x1) * bytes); col += bytes)
- {
- add_new_color (bytes, &buffer[col], cube, bucket_expo);
- }
- }
- else
- {
- /* add the left border */
- for (col = 0; col < (borderaverage_thickness * bytes); col += bytes)
- {
- add_new_color (bytes, &buffer[col], cube, bucket_expo);
- }
- /* add the right border */
- for (col = ((x2 - x1 - borderaverage_thickness) * bytes);
- col < ((x2 - x1) * bytes); col += bytes)
- {
- add_new_color (bytes, &buffer[col], cube, bucket_expo);
- }
- }
-
- if ((row % 5) == 0)
- gimp_progress_update ((double) row / (double) (y2 - y1));
- }
-
- max = 0; r = 0; g = 0; b = 0;
-
- /* get max of cube */
- for (i = 0; i < bucket_num; i++)
- {
- for (j = 0; j < bucket_num; j++)
- {
- for (k = 0; k < bucket_num; k++)
- {
- if (cube[(i << (bucket_rexpo << 1)) +
- (j << bucket_rexpo) + k] > max)
- {
- max = cube[(i << (bucket_rexpo << 1)) +
- (j << bucket_rexpo) + k];
- r = (i<<bucket_expo) + (1<<(bucket_expo - 1));
- g = (j<<bucket_expo) + (1<<(bucket_expo - 1));
- b = (k<<bucket_expo) + (1<<(bucket_expo - 1));
- }
- }
- }
- }
-
- /* return the color */
- *res_r = r;
- *res_g = g;
- *res_b = b;
-
- g_free (buffer);
- g_free (cube);
- }
-
- static void
- add_new_color (gint bytes,
- guchar *buffer,
- gint *cube,
- gint bucket_expo)
- {
- guchar r, g, b;
- gint bucket_rexpo;
-
- bucket_rexpo = 8 - bucket_expo;
- r = buffer[0] >>bucket_expo;
- if (bytes > 1)
- {
- g = buffer[1] >>bucket_expo;
- }
- else
- {
- g = 0;
- }
- if (bytes > 2)
- {
- b = buffer[2] >>bucket_expo;
- }
- else
- {
- b = 0;
- }
- cube[(r << (bucket_rexpo << 1)) + (g << bucket_rexpo) + b]++;
- }
-
- static gboolean run_flag = FALSE;
-
- static void
- borderaverage_ok_callback (GtkWidget *widget,
- gpointer data)
- {
- run_flag = TRUE;
-
- gtk_widget_destroy (GTK_WIDGET (data));
- }
-
- static gint
- borderaverage_dialog (void)
- {
- GtkWidget *dlg;
- GtkWidget *frame;
- GtkWidget *vbox;
- GtkWidget *hbox;
- GtkWidget *label;
- GtkWidget *spinbutton;
- GtkObject *adj;
- GtkWidget *menu;
-
- gimp_ui_init ("borderaverage", FALSE);
-
- dlg = gimp_dialog_new (_("Borderaverage"), "borderaverage",
- gimp_standard_help_func, "filters/borderaverage.html",
- GTK_WIN_POS_MOUSE,
- FALSE, TRUE, FALSE,
-
- _("OK"), borderaverage_ok_callback,
- NULL, NULL, NULL, TRUE, FALSE,
- _("Cancel"), gtk_widget_destroy,
- NULL, 1, NULL, FALSE, TRUE,
-
- NULL);
-
- gtk_signal_connect (GTK_OBJECT (dlg), "destroy",
- GTK_SIGNAL_FUNC (gtk_main_quit),
- NULL);
-
- vbox = gtk_vbox_new (FALSE, 4);
- gtk_container_set_border_width (GTK_CONTAINER (vbox), 6);
- gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), vbox, TRUE, TRUE, 0);
- gtk_widget_show (vbox);
-
- frame = gtk_frame_new (_("Border Size"));
- gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
- gtk_widget_show (frame);
-
- hbox = gtk_hbox_new (FALSE, 4);
- gtk_container_set_border_width (GTK_CONTAINER (hbox), 4);
- gtk_container_add (GTK_CONTAINER (frame), hbox);
- gtk_widget_show (hbox);
-
- label = gtk_label_new (_("Thickness:"));
- gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
- gtk_widget_show (label);
-
- spinbutton = gimp_spin_button_new (&adj, borderaverage_thickness,
- 0, 256, 1, 5, 0, 0, 0);
- gtk_box_pack_start (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
- gtk_widget_show (spinbutton);
-
- gtk_signal_connect (GTK_OBJECT (adj), "value_changed",
- GTK_SIGNAL_FUNC (gimp_int_adjustment_update),
- &borderaverage_thickness);
-
- frame = gtk_frame_new (_("Number of Colors"));
- gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
- gtk_widget_show (frame);
-
- hbox = gtk_hbox_new (FALSE, 4);
- gtk_container_set_border_width (GTK_CONTAINER (hbox), 4);
- gtk_container_add (GTK_CONTAINER (frame), hbox);
- gtk_widget_show (hbox);
-
- label = gtk_label_new (_("Bucket Size:"));
- gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
- gtk_widget_show (label);
-
- menu = gimp_option_menu_new2 (FALSE, gimp_menu_item_update,
- &borderaverage_bucket_exponent,
- (gpointer) borderaverage_bucket_exponent,
-
- _("1 (nonsense?)"), (gpointer) 0, NULL,
- "2", (gpointer) 1, NULL,
- "4", (gpointer) 2, NULL,
- "8", (gpointer) 3, NULL,
- "16", (gpointer) 4, NULL,
- "32", (gpointer) 5, NULL,
- "64", (gpointer) 6, NULL,
- "128", (gpointer) 7, NULL,
- _("256 (nonsense?)"), (gpointer) 8, NULL,
-
- NULL);
- gtk_box_pack_start (GTK_BOX (hbox), menu, FALSE, FALSE, 0);
- gtk_widget_show (menu);
-
- gtk_widget_show (dlg);
-
- gtk_main ();
- gdk_flush ();
-
- return run_flag;
- }
-