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/*
* Hot Beverage Companion – desktop application gtk ui
*
* Copyright (C) 2018 Gediminas Jakutis
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; version 2.1
* of the License.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <gtk/gtk.h>
#include <time.h>
#include <string.h>
#include "util.h"
#include "gtk.h"
struct settings {
int nd;
struct timespec period;
};
struct gtkui {
GtkBuilder *builder;
GObject *window;
GObject *tempvalue;
GObject *resistance;
GObject *voltage;
GObject *reslabel;
GObject *voltlabel;
GObject *showmorebutton;
GObject *button_on;
GObject *button_off;
GObject *ticker;
GError *error;
int showmore;
};
static struct settings settings;
static struct gtkui gtkui;
static int gtkui_update(void *data);
static void gtkui_die(void *data);
static void gtkui_togglemore(void);
int gtkui_init(int *argc, char ***argv, int nd, struct timespec period)
{
int ret = A_OK;
settings.nd = nd;
settings.period = period;
if (!gtk_init_check(argc, argv)) {
ret = ERROR;
goto fail;
}
gtkui.builder = gtk_builder_new();
if (!gtk_builder_add_from_file(gtkui.builder, DATA_DIR "/gtklayout.ui", >kui.error)) {
ret = ERROR;
goto fail;
}
gtkui.window = gtk_builder_get_object(gtkui.builder, "window");
gtkui.tempvalue = gtk_builder_get_object(gtkui.builder, "tempvalue");
gtkui.resistance = gtk_builder_get_object(gtkui.builder, "resistance");
gtkui.voltage = gtk_builder_get_object(gtkui.builder, "voltage");
gtkui.reslabel = gtk_builder_get_object(gtkui.builder, "reslabel");
gtkui.voltlabel = gtk_builder_get_object(gtkui.builder, "voltlabel");
gtkui.showmorebutton = gtk_builder_get_object(gtkui.builder, "showmore");
gtkui.button_on = gtk_builder_get_object(gtkui.builder, "button_on");
gtkui.button_off = gtk_builder_get_object(gtkui.builder, "button_off");
gtkui.ticker = gtk_builder_get_object(gtkui.builder, "ticker");
g_signal_connect(gtkui.window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
g_signal_connect(gtkui.showmorebutton, "toggled", G_CALLBACK(gtkui_togglemore), NULL);
gtkui.showmore = 1; /* we are setting this so we can toggle this off on the following call */
gtkui_togglemore();
fail:
return ret;
}
int gtkui_loop(void)
{
int ret;
g_timeout_add_full(G_PRIORITY_DEFAULT, settings.period.tv_nsec / (1000 * 1000), gtkui_update, &ret, gtkui_die);
gtk_main();
return ret;
}
static int gtkui_update(void *data)
{
static const char ticker[] = "|/-\\";
static const char waitmsg[] = "Waiting.";
static int statechange = 1;
static struct tempmodule_state state;
char textbuf[32];
int *ret;
ret = data;
*ret = refresh_data(settings.nd, &state);
if (*ret == A_OK) {
textbuf[0] = ticker[state.sequence % strlen(ticker)];
textbuf[1] = '\0';
gtk_label_set_text(GTK_LABEL(gtkui.ticker), textbuf);
sprintf(textbuf, "%.1f°C", state.temperature);
gtk_label_set_text(GTK_LABEL(gtkui.tempvalue), textbuf);
sprintf(textbuf, "%hdΩ", state.resistance);
gtk_label_set_text(GTK_LABEL(gtkui.resistance), textbuf);
sprintf(textbuf, "%.3fV", state.voltage);
gtk_label_set_text(GTK_LABEL(gtkui.voltage), textbuf);
statechange = 1;
} else if (*ret == DEAD && statechange) {
gtk_label_set_text(GTK_LABEL(gtkui.tempvalue), waitmsg);
gtk_label_set_text(GTK_LABEL(gtkui.resistance), waitmsg);
gtk_label_set_text(GTK_LABEL(gtkui.voltage), waitmsg);
statechange = 0;
}
return *ret != ERROR;
}
static void gtkui_die(void *data)
{
(void) data; /* silence unused variable warning */
gtk_main_quit();
return;
}
static void gtkui_togglemore(void)
{
gtkui.showmore = !gtkui.showmore;
gtkui.showmore ? gtk_button_set_image(GTK_BUTTON(gtkui.showmorebutton), GTK_WIDGET(gtkui.button_on)) :
gtk_button_set_image(GTK_BUTTON(gtkui.showmorebutton), GTK_WIDGET(gtkui.button_off));
gtk_widget_set_visible (GTK_WIDGET(gtkui.resistance), gtkui.showmore);
gtk_widget_set_visible (GTK_WIDGET(gtkui.voltage), gtkui.showmore);
gtk_widget_set_visible (GTK_WIDGET(gtkui.reslabel), gtkui.showmore);
gtk_widget_set_visible (GTK_WIDGET(gtkui.voltlabel), gtkui.showmore);
}
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