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/* gAlan - Graphical Audio Language
* Copyright (C) 1999 Tony Garnock-Jones
*
* 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 <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <stddef.h>
#include <gdk/gdk.h>
#include <gtk/gtk.h>
#include "global.h"
#include "generator.h"
#include "comp.h"
#include "control.h"
#include "gencomp.h"
#include "msgbox.h"
#define GENERATOR_CLASS_NAME "ctrl"
#define GENERATOR_CLASS_PATH "Controls/Control"
#define EVT_VALUE 0
#define EVT_DISP 1
#define EVT_OUTPUT 0
typedef struct Data {
gdouble min, max, step, page;
gdouble value;
} Data;
PRIVATE int init_instance(Generator *g) {
Data *data = safe_malloc(sizeof(Data));
g->data = data;
data->min = data->value = 0;
data->max = 100;
data->step = data->page = 1;
return 1;
}
PRIVATE void destroy_instance(Generator *g) {
free(g->data);
}
PRIVATE void unpickle_instance(Generator *g, ObjectStoreItem *item, ObjectStore *db) {
Data *data = safe_malloc(sizeof(Data));
g->data = data;
data->min = objectstore_item_get_double(item, "ctrl_min", 0);
data->max = objectstore_item_get_double(item, "ctrl_max", 0);
data->step = objectstore_item_get_double(item, "ctrl_step", 0);
data->page = objectstore_item_get_double(item, "ctrl_page", 0);
data->value = objectstore_item_get_double(item, "ctrl_value", 0);
}
PRIVATE void pickle_instance(Generator *g, ObjectStoreItem *item, ObjectStore *db) {
Data *data = g->data;
objectstore_item_set_double(item, "ctrl_min", data->min);
objectstore_item_set_double(item, "ctrl_max", data->max);
objectstore_item_set_double(item, "ctrl_step", data->step);
objectstore_item_set_double(item, "ctrl_page", data->page);
objectstore_item_set_double(item, "ctrl_value", data->value);
}
PRIVATE void ctrl_setrange(Control *c) {
Data *data= c->g->data;
c->min = data->min;
c->max = data->max;
c->step = data->step;
c->page = data->page;
}
PRIVATE void evt_value_handler(Generator *g, AEvent *event) {
Data *data = g->data;
data->value = event->d.number;
gen_update_controls(g, -1);
gen_send_events(g, EVT_OUTPUT, -1, event);
}
PRIVATE void evt_disp_handler(Generator *g, AEvent *event) {
Data *data = g->data;
data->value = event->d.number;
gen_update_controls(g, -1);
}
PRIVATE ControlDescriptor controls[] = {
{ CONTROL_KIND_KNOB, "knob", 0,0,0,0,0,TRUE, 1,EVT_VALUE,
ctrl_setrange,NULL, control_double_updater, (gpointer) offsetof(Data, value) },
{ CONTROL_KIND_SLIDER, "slider", 0,0,0,0,0,TRUE, 1,EVT_VALUE,
ctrl_setrange,NULL, control_double_updater, (gpointer) offsetof(Data, value) },
{ CONTROL_KIND_TOGGLE, "toggle", 0,0,0,0,0,FALSE, 1,EVT_VALUE,
ctrl_setrange,NULL, control_double_updater, (gpointer) offsetof(Data, value) },
{ CONTROL_KIND_BUTTON, "button", 0,0,0,0,0,FALSE, 1,EVT_VALUE,
ctrl_setrange,NULL, control_double_updater, (gpointer) offsetof(Data, value) },
{ CONTROL_KIND_NONE, }
};
PRIVATE GtkWidget *build_entry(GtkWidget *vbox, char *text, gdouble value) {
GtkWidget *hbox = gtk_hbox_new(FALSE, 2);
GtkWidget *label = gtk_label_new(text);
GtkWidget *entry = gtk_entry_new();
char buf[128];
gtk_box_pack_start(GTK_BOX(hbox), label, TRUE, TRUE, 0);
gtk_box_pack_start(GTK_BOX(hbox), entry, TRUE, TRUE, 0);
gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 0);
gtk_widget_show(label);
gtk_widget_show(entry);
gtk_widget_show(hbox);
sprintf(buf, "%g", value);
gtk_entry_set_text(GTK_ENTRY(entry), buf);
return entry;
}
PRIVATE void props(Component *c, Generator *g) {
Data *data = g->data;
GtkWidget *min, *max, *step, *page;
GtkWidget *vbox;
vbox = gtk_vbox_new(FALSE, 2);
min = build_entry(vbox, "Range Minimum:", data->min);
max = build_entry(vbox, "Range Maximum:", data->max);
step = build_entry(vbox, "Step Increment:", data->step);
page = build_entry(vbox, "Page Increment:", data->page);
if (popup_dialog(g->name, MSGBOX_OK | MSGBOX_CANCEL, 0, MSGBOX_OK, vbox, NULL, 0) == MSGBOX_OK) {
data->min = atof(gtk_entry_get_text(GTK_ENTRY(min)));
data->max = atof(gtk_entry_get_text(GTK_ENTRY(max)));
data->step = atof(gtk_entry_get_text(GTK_ENTRY(step)));
data->page = atof(gtk_entry_get_text(GTK_ENTRY(page)));
g_list_foreach(g->controls, (GFunc) ctrl_setrange, NULL);
g_list_foreach(g->controls, (GFunc) control_update_range, NULL);
}
}
PRIVATE void setup_class(void) {
GeneratorClass *k = gen_new_generatorclass(GENERATOR_CLASS_NAME, FALSE, 2, 1,
NULL, NULL, controls,
init_instance, destroy_instance,
unpickle_instance, pickle_instance);
gen_configure_event_input(k, EVT_VALUE, "Value", evt_value_handler);
gen_configure_event_input(k, EVT_DISP, "Display", evt_disp_handler);
gen_configure_event_output(k, EVT_OUTPUT, "Output");
gencomp_register_generatorclass(k, FALSE, GENERATOR_CLASS_PATH, NULL, props);
}
PUBLIC void init_plugin_ctrl(void) {
setup_class();
}
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