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/*
* $Id: gaussian_step.c 23666 2021-05-10 21:56:10Z yeti-dn $
* Copyright (C) 2003-2021 David Necas (Yeti), Petr Klapetek.
* E-mail: yeti@gwyddion.net, klapetek@gwyddion.net.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include <string.h>
#include <gtk/gtk.h>
#include <libgwyddion/gwymacros.h>
#include <libgwyddion/gwymath.h>
#include <libprocess/gwyprocess.h>
#include <libgwydgets/gwystock.h>
#include <libgwymodule/gwymodule-process.h>
#include <app/gwyapp.h>
#include "preview.h"
#define RUN_MODES (GWY_RUN_IMMEDIATE | GWY_RUN_INTERACTIVE)
#define FWHM2SIGMA (1.0/(2.0*sqrt(2*G_LN2)))
enum {
PARAM_GAUSSIAN_FWHM,
PARAM_UPDATE,
};
typedef struct {
GwyParams *params;
GwyDataField *field;
GwyDataField *result;
} ModuleArgs;
typedef struct {
ModuleArgs *args;
GtkWidget *dialog;
GwyParamTable *table;
GwyContainer *data;
} ModuleGUI;
static gboolean module_register (void);
static GwyParamDef* define_module_params(void);
static void gaussian_step (GwyContainer *data,
GwyRunType runtype);
static void execute (ModuleArgs *args);
static GwyDialogOutcome run_gui (ModuleArgs *args,
GwyContainer *data,
gint id);
static void param_changed (ModuleGUI *gui,
gint id);
static void preview (gpointer user_data);
static GwyModuleInfo module_info = {
GWY_MODULE_ABI_VERSION,
&module_register,
N_("Edge detection using a Gaussian step filter."),
"Yeti <Yeti@gwyddion.net>",
"2.0",
"David Nečas (Yeti) & Petr Klapetek",
"2019",
};
GWY_MODULE_QUERY2(module_info, gaussian_step)
static gboolean
module_register(void)
{
gwy_process_func_register("gaussian_step",
(GwyProcessFunc)&gaussian_step,
N_("/_Presentation/_Edge Detection/_Gaussian Step..."),
NULL,
RUN_MODES,
GWY_MENU_FLAG_DATA,
N_("Detect edges using Gaussian step filter"));
return TRUE;
}
static GwyParamDef*
define_module_params(void)
{
static GwyParamDef *paramdef = NULL;
if (paramdef)
return paramdef;
paramdef = gwy_param_def_new();
gwy_param_def_set_function_name(paramdef, gwy_process_func_current());
gwy_param_def_add_double(paramdef, PARAM_GAUSSIAN_FWHM, "gaussian-fwhm", _("_Gaussian FWHM"), 0.0, 25.0, 3.5);
gwy_param_def_add_instant_updates(paramdef, PARAM_UPDATE, "update", NULL, TRUE);
return paramdef;
}
static void
gaussian_step(GwyContainer *data, GwyRunType runtype)
{
GwyDialogOutcome outcome = GWY_DIALOG_PROCEED;
ModuleArgs args;
GQuark squark;
gint id;
g_return_if_fail(runtype & RUN_MODES);
gwy_app_data_browser_get_current(GWY_APP_DATA_FIELD, &args.field,
GWY_APP_DATA_FIELD_ID, &id,
GWY_APP_SHOW_FIELD_KEY, &squark,
0);
g_return_if_fail(args.field && squark);
args.result = gwy_data_field_new_alike(args.field, TRUE);
gwy_si_unit_set_from_string(gwy_data_field_get_si_unit_z(args.result), NULL);
args.params = gwy_params_new_from_settings(define_module_params());
if (runtype == GWY_RUN_INTERACTIVE) {
outcome = run_gui(&args, data, id);
gwy_params_save_to_settings(args.params);
if (outcome == GWY_DIALOG_CANCEL)
goto end;
}
if (outcome != GWY_DIALOG_HAVE_RESULT)
execute(&args);
gwy_app_undo_qcheckpointv(data, 1, &squark);
gwy_container_set_object(data, squark, args.result);
gwy_app_channel_log_add_proc(data, id, id);
end:
g_object_unref(args.result);
g_object_unref(args.params);
}
static GwyDialogOutcome
run_gui(ModuleArgs *args, GwyContainer *data, gint id)
{
GtkWidget *hbox, *dataview;
GwyDialogOutcome outcome;
GwyParamTable *table;
GwyDialog *dialog;
ModuleGUI gui;
gwy_clear(&gui, 1);
gui.args = args;
gui.data = gwy_container_new();
gwy_container_set_object_by_name(gui.data, "/0/data", args->result);
gwy_app_sync_data_items(data, gui.data, id, 0, FALSE,
GWY_DATA_ITEM_PALETTE,
GWY_DATA_ITEM_REAL_SQUARE,
0);
gui.dialog = gwy_dialog_new(_("Gaussian Step Detection"));
dialog = GWY_DIALOG(gui.dialog);
gwy_dialog_add_buttons(dialog, GWY_RESPONSE_UPDATE, GWY_RESPONSE_RESET, GTK_RESPONSE_CANCEL, GTK_RESPONSE_OK, 0);
dataview = gwy_create_preview(gui.data, 0, PREVIEW_SIZE, FALSE);
hbox = gwy_create_dialog_preview_hbox(GTK_DIALOG(dialog), GWY_DATA_VIEW(dataview), FALSE);
table = gui.table = gwy_param_table_new(args->params);
gwy_param_table_append_slider(table, PARAM_GAUSSIAN_FWHM);
gwy_param_table_slider_add_alt(table, PARAM_GAUSSIAN_FWHM);
gwy_param_table_alt_set_field_pixel_x(table, PARAM_GAUSSIAN_FWHM, args->field);
gwy_param_table_append_checkbox(table, PARAM_UPDATE);
gtk_box_pack_start(GTK_BOX(hbox), gwy_param_table_widget(table), TRUE, TRUE, 0);
gwy_dialog_add_param_table(dialog, table);
g_signal_connect_swapped(table, "param-changed", G_CALLBACK(param_changed), &gui);
gwy_dialog_set_preview_func(dialog, GWY_PREVIEW_IMMEDIATE, preview, &gui, NULL);
outcome = gwy_dialog_run(dialog);
g_object_unref(gui.data);
return outcome;
}
static void
param_changed(ModuleGUI *gui, gint id)
{
if (id != PARAM_UPDATE)
gwy_dialog_invalidate(GWY_DIALOG(gui->dialog));
}
static void
preview(gpointer user_data)
{
ModuleGUI *gui = (ModuleGUI*)user_data;
ModuleArgs *args = gui->args;
execute(args);
gwy_data_field_data_changed(args->result);
gwy_dialog_have_result(GWY_DIALOG(gui->dialog));
}
static void
execute(ModuleArgs *args)
{
GwyParams *params = args->params;
gdouble gaussian_fwhm = gwy_params_get_double(params, PARAM_GAUSSIAN_FWHM);
GwyDataField *result = args->result, *field = args->field;
gwy_data_field_copy(field, result, FALSE);
gwy_data_field_filter_gauss_step(result, gaussian_fwhm*FWHM2SIGMA);
gwy_data_field_normalize(result);
}
/* vim: set cin columns=120 tw=118 et ts=4 sw=4 cino=>1s,e0,n0,f0,{0,}0,^0,\:1s,=0,g1s,h0,t0,+1s,c3,(0,u0 : */
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