why glibmm is not showing correct time intervals? - c++

Question

I am getting very large values on the interface and where I am using Glib::DateTime::difference(), that function produces negative numbers
initializer of controller class:
UI_Controller::UI_Controller(Gtk::Builder * refference, Gtk::Application * app)
{
view_limit_time = new Gtk::Calendar();
view_limit_time->set_hexpand(true);
deffine_application (app);
this->refference = refference;
refference->get_widget("main_window",this->content_relations);
widgets = refference->get_objects();
Glib::ustring widget_names = "";
//dynamic_cast<Gtk::Button*>(button_access->get_child_at(1,0))
for (int i=0; i < widgets.size(); i++){
widget_names = widget_names+dynamic_cast<Gtk::Widget*>(widgets.at(i).get())->get_name()+"\n";
if (dynamic_cast<Gtk::Buildable*>(widgets.at(i).get())->get_name() == (Glib::ustring) "timer_grid"){
Gtk::Grid * button_access = dynamic_cast<Gtk::Grid*>(widgets.at(i).get());
grid_counter = i;
dynamic_cast<Gtk::Button*>(button_access->get_child_at(0,2))->signal_clicked().connect(sigc::bind<Gtk::Label*>(sigc::mem_fun(*this,&UI_Controller::start_timer),dynamic_cast<Gtk::Label*>(button_access->get_child_at(0,1)),i ) );
dynamic_cast<Gtk::Button*>(button_access->get_child_at(1,2))->signal_clicked().connect(sigc::bind(sigc::mem_fun(*this,&UI_Controller::stop_timer),i ) );
dynamic_cast<Gtk::Button*>(button_access->get_child_at(2,2))->signal_clicked().connect(sigc::bind(sigc::mem_fun(*this,&UI_Controller::restart_timer),i ) );
dynamic_cast<Gtk::Button*>(button_access->get_child_at(3,0))->signal_clicked().connect(sigc::bind<Gtk::Widget*>(sigc::mem_fun(*this,&UI_Controller::add_timer),button_access ) );
button_access->set_size_request(700,100);
//dynamic_cast<Gtk::ScrolledWindow*>((button_access->get_ancestor (GTK_TYPE_SCROLLED_WINDOW)))->set_min_content_height(300);
}
if (dynamic_cast<Gtk::Buildable*>(widgets.at(i).get())->get_name() == (Glib::ustring) "counter_grid"){
Gtk::Grid * button_access = dynamic_cast<Gtk::Grid*>(widgets.at(i).get());
button_access->attach(*(dynamic_cast<Gtk::Widget*>(view_limit_time)),0,1,2,1);
//view_limit_time->signal_day_selected().connect(sigc::bind<Gtk::Widget*>(sigc::mem_fun(*this,&UI_Controller::start_counter),(button_access->get_child_at(2,1)),i,(button_access->get_child_at(0,1))) );
grid_counter = i;
dynamic_cast<Gtk::Button*>(button_access->get_child_at(0,2))->signal_clicked().connect(sigc::bind<Gtk::Widget*>(sigc::mem_fun(*this,&UI_Controller::start_counter),(button_access->get_child_at(2,1)),i,(button_access->get_child_at(0,1))) );
dynamic_cast<Gtk::Button*>(button_access->get_child_at(1,2))->signal_clicked().connect(sigc::bind(sigc::mem_fun(*this,&UI_Controller::stop_counter),i ) );
dynamic_cast<Gtk::Button*>(button_access->get_child_at(2,2))->signal_clicked().connect(sigc::bind(sigc::mem_fun(*this,&UI_Controller::restart_counter),i ) );
dynamic_cast<Gtk::Button*>(button_access->get_child_at(3,0))->signal_clicked().connect(sigc::bind<Gtk::Widget*>(sigc::mem_fun(*this,&UI_Controller::add_counter),button_access ) );
button_access->set_size_request(700,300);
//dynamic_cast<Gtk::ScrolledWindow*>((button_access->get_ancestor (GTK_TYPE_SCROLLED_WINDOW)))->set_min_content_height(300);
}
}
app->run();
}
header from the controller:
#ifndef _U_I_CONTROLLER_H_
#define _U_I_CONTROLLER_H_
#include <unistd.h>
#include <gtkmm.h>
#include <unordered_map>
#include <glibmm/datetime.h>
#include <time-keeper.h>
#include <iostream>
#define TIMER_GRID_UI "src/n_time.ui"
#define COUNTER_GRID_UI "src/n_counter.ui"
namespace std{
template <>
struct hash<Time_Keeper>
{
size_t operator()( Time_Keeper& t) const
{
return t.hasheable().hash();
}
};
}
class UI_Controller
{
public:
UI_Controller(Gtk::Builder* refference,Gtk::Application * app);
void deffine_application(Gtk::Application * app);
void add_window_to_application(Gtk::Window * window);
protected:
private:
int grid_counter;
bool timer_started=false;
Gtk::Builder * refference;
Gtk::ApplicationWindow * content_relations;
Gtk::Application * app;
Gtk::Calendar * view_limit_time;
std::vector<Glib::RefPtr<Glib::Object>> widgets;
std::unordered_map<int,Time_Keeper> bind_time;
void show_window(Gtk::Window *window);
void start_timer(Gtk::Label * selected, int position);
void stop_timer(int i) { (bind_time[i]).stop_timer (); };
void restart_timer(int i) { (bind_time[i]).reset_timer ();};
void add_timer(Gtk::Widget * selected);
bool timeout_timer(Gtk::Label * display,int position);
bool timeout_counter(Gtk::Label * display,int position, Glib::DateTime when);
int get_index(Glib::RefPtr<Glib::Object> target);
void start_counter (Gtk::Widget * selected, int position, Gtk::Widget * set_when);
void stop_counter (int i){ (bind_time[i]).stop_counter();};
void restart_counter(int i){ return ;};
void add_counter(Gtk::Widget * selected);
/*sigc::connection Glib::SignalTimeout::connect(const sigc::slot<bool()>& slot,
unsigned int interval, int priority = Glib::PRIORITY_DEFAULT);*/
};
#endif // _U_I_CONTROLLER_H_
the actionable function related to the counter:
void UI_Controller::start_counter(Gtk::Widget * selected, int position, Gtk::Widget * set_when){
guint selected_year, selected_month, selected_day;
if (bind_time.find(position) == bind_time.end() ){
bind_time [position] = *(new Time_Keeper());
}
//Glib::DateTime when = ( Glib::DateTime::create_from_iso8601(( (dynamic_cast<Gtk::Entry*>(set_when))->get_text())) );
(dynamic_cast<Gtk::Calendar*>(set_when))->get_date(selected_year,selected_month,selected_day);
Glib::DateTime when = (Glib::DateTime::create_utc(selected_year,selected_month,selected_day,1,1,1));
//refference->get_widget("timer_display",display);
//if (!timer_started){
sigc::slot<bool()> my_slot = sigc::bind(sigc::mem_fun(*this,
&UI_Controller::timeout_counter), (dynamic_cast<Gtk::Label*>(selected)), position,when);
auto conn = Glib::signal_timeout().connect(my_slot, 1000);
timer_started = true;
//}
}
the function calculating the time difference on the Time_Keeper class:
Glib::ustring Time_Keeper::display_counter(Glib::DateTime when){
counter_active = true;
Glib::DateTime now = Glib::DateTime::create_now_utc();
size_t seconds = ( ((size_t)(when.difference(now))) /1000000);
std::cout << now.get_year() << std::endl;
size_t hours = (seconds/3600);
seconds%=3600;
size_t minutes=seconds/60;
seconds%=60;
return ((Glib::ustring) ( std::to_string(hours)+":" \
+std::to_string(minutes)+":" \
+std::to_string(seconds) ));
}
ui file:
<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated with glade 3.38.2 -->
<interface>
<requires lib="gtk+" version="3.24"/>
<object class="GtkApplicationWindow" id="main_window">
<property name="can-focus">False</property>
<child>
<object class="GtkBox">
<property name="visible">True</property>
<property name="can-focus">False</property>
<property name="orientation">vertical</property>
<property name="spacing">13</property>
<property name="homogeneous">True</property>
<child>
<object class="GtkScrolledWindow">
<property name="visible">True</property>
<property name="can-focus">True</property>
<property name="shadow-type">in</property>
<child>
<object class="GtkViewport">
<property name="visible">True</property>
<property name="can-focus">False</property>
<child>
<object class="GtkBox">
<property name="visible">True</property>
<property name="can-focus">False</property>
<property name="orientation">vertical</property>
<child>
<object class="GtkLabel">
<property name="visible">True</property>
<property name="can-focus">False</property>
<property name="label" translatable="yes">current activity time</property>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<!-- n-columns=4 n-rows=3 -->
<object class="GtkGrid" id="timer_grid">
<property name="visible">True</property>
<property name="can-focus">False</property>
<property name="hexpand">True</property>
<property name="vexpand">True</property>
<child>
<object class="GtkEntry">
<property name="visible">True</property>
<property name="can-focus">True</property>
<property name="hexpand">True</property>
</object>
<packing>
<property name="left-attach">0</property>
<property name="top-attach">0</property>
<property name="width">3</property>
</packing>
</child>
<child>
<object class="GtkButton" id="start_timer">
<property name="label" translatable="yes">Start</property>
<property name="visible">True</property>
<property name="can-focus">True</property>
<property name="receives-default">True</property>
</object>
<packing>
<property name="left-attach">0</property>
<property name="top-attach">2</property>
</packing>
</child>
<child>
<object class="GtkButton" id="stop_timer">
<property name="label" translatable="yes">Stop</property>
<property name="visible">True</property>
<property name="can-focus">True</property>
<property name="receives-default">True</property>
</object>
<packing>
<property name="left-attach">1</property>
<property name="top-attach">2</property>
</packing>
</child>
<child>
<object class="GtkButton" id="restart_timer">
<property name="label" translatable="yes">Restart</property>
<property name="visible">True</property>
<property name="can-focus">True</property>
<property name="receives-default">True</property>
</object>
<packing>
<property name="left-attach">2</property>
<property name="top-attach">2</property>
</packing>
</child>
<child>
<object class="GtkButton" id="add_timer">
<property name="label" translatable="yes">+</property>
<property name="visible">True</property>
<property name="can-focus">True</property>
<property name="receives-default">True</property>
</object>
<packing>
<property name="left-attach">3</property>
<property name="top-attach">0</property>
<property name="height">3</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="timer_display">
<property name="visible">True</property>
<property name="can-focus">False</property>
<property name="hexpand">True</property>
<property name="vexpand">True</property>
</object>
<packing>
<property name="left-attach">0</property>
<property name="top-attach">1</property>
<property name="width">3</property>
</packing>
</child>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
</child>
</object>
</child>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkScrolledWindow">
<property name="visible">True</property>
<property name="can-focus">True</property>
<property name="shadow-type">in</property>
<child>
<object class="GtkViewport">
<property name="visible">True</property>
<property name="can-focus">False</property>
<child>
<object class="GtkBox">
<property name="visible">True</property>
<property name="can-focus">False</property>
<property name="orientation">vertical</property>
<child>
<object class="GtkLabel">
<property name="visible">True</property>
<property name="can-focus">False</property>
<property name="label" translatable="yes">activity limit</property>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<!-- n-columns=4 n-rows=3 -->
<object class="GtkGrid" id="counter_grid">
<property name="visible">True</property>
<property name="can-focus">False</property>
<property name="hexpand">True</property>
<property name="vexpand">True</property>
<child>
<object class="GtkEntry">
<property name="visible">True</property>
<property name="can-focus">True</property>
<property name="hexpand">True</property>
</object>
<packing>
<property name="left-attach">0</property>
<property name="top-attach">0</property>
<property name="width">3</property>
</packing>
</child>
<child>
<object class="GtkButton">
<property name="label" translatable="yes">Start</property>
<property name="visible">True</property>
<property name="can-focus">True</property>
<property name="receives-default">True</property>
</object>
<packing>
<property name="left-attach">0</property>
<property name="top-attach">2</property>
</packing>
</child>
<child>
<object class="GtkButton">
<property name="label" translatable="yes">Stop</property>
<property name="visible">True</property>
<property name="can-focus">True</property>
<property name="receives-default">True</property>
</object>
<packing>
<property name="left-attach">1</property>
<property name="top-attach">2</property>
</packing>
</child>
<child>
<object class="GtkButton">
<property name="label" translatable="yes">Restart</property>
<property name="visible">True</property>
<property name="can-focus">True</property>
<property name="receives-default">True</property>
</object>
<packing>
<property name="left-attach">2</property>
<property name="top-attach">2</property>
</packing>
</child>
<child>
<object class="GtkButton">
<property name="label" translatable="yes">+</property>
<property name="visible">True</property>
<property name="can-focus">True</property>
<property name="receives-default">True</property>
</object>
<packing>
<property name="left-attach">3</property>
<property name="top-attach">0</property>
<property name="height">3</property>
</packing>
</child>
<child>
<object class="GtkLabel">
<property name="visible">True</property>
<property name="can-focus">False</property>
<property name="hexpand">True</property>
<property name="vexpand">True</property>
</object>
<packing>
<property name="left-attach">2</property>
<property name="top-attach">1</property>
</packing>
</child>
<child>
<placeholder/>
</child>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
</child>
</object>
</child>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
</child>
</object>
</interface>

Answer 1

on the line (dynamic_cast<Gtk::Calendar*>(set_when))->get_date(selected_year,selected_month,selected_day); the month was being set to 1 unity less and that was confusing the calculation of the time difference. I have found it when outputting the difference of the function get_day_of_year from the Glib::DateTime objects "now" and "when" and seeing that it was showing high values