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/*
* Copyright 2008 Klaus Triendl
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <gtkmm.h>
#include <sigx/sigx.h>
// fwd decl
class TheGUI;
class TheThread: public sigx::glib_threadable
{
public:
TheThread(TheGUI* thegui);
protected:
// virtuals from sigx::threadable
virtual void on_startup();
void on_first_idle();
void on_button_clicked();
private:
TheGUI* m_thegui;
};
class TheGUI: public Gtk::Window, public sigx::glib_auto_dispatchable
{
public:
TheGUI();
public:
// expose Gtk::Button::signal_clicked of m_btn
sigx::signal_f<Glib::SignalProxy0<void> > signal_button_clicked;
private:
void on_first_idle();
void on_thethread_ready();
private:
TheThread m_thethread;
Gtk::Button* m_btn;
};
#include <iostream>
TheThread::TheThread(TheGUI* thegui):
m_thegui(thegui)
{}
//virtual
void TheThread::on_startup()
{
// one-shot idle handler
maincontext()->signal_idle().connect(
sigc::bind_return(
sigc::mem_fun(this, &TheThread::on_first_idle),
false
)
);
}
void TheThread::on_first_idle()
{
std::cout << "TheTread connects to the button_clicked signal." << std::endl;
// connect to TheGUI::signal_button_clicked
m_thegui->signal_button_clicked().connect_notify(
sigc::mem_fun(this, &TheThread::on_button_clicked)
);
}
void TheThread::on_button_clicked()
{
std::cout << "TheThread got notified that the button was clicked" << std::endl;
}
TheGUI::TheGUI():
Gtk::Window(),
sigx::glib_auto_dispatchable(),
// set up signal functor with late object instance binding (because m_btn is still invalid
// but will be constructed later)
signal_button_clicked(*this, sigc::ref(m_btn), &Gtk::Button::signal_clicked),
m_thethread(this),
m_btn()
{
m_btn = Gtk::manage(new Gtk::Button("notify thread"));
m_btn->set_sensitive(false);
add(*m_btn);
// end the thread if close button is clicked
signal_delete_event().connect(
// hide parameter GdkEvent*
sigc::hide(sigc::bind_return(sigc::mem_fun(m_thethread, &TheThread::finish), false))
);
// one-shot idle handler to start the thread
Glib::signal_idle().connect(
sigc::bind_return(sigc::mem_fun(this, &TheGUI::on_first_idle), false)
);
show_all_children();
}
void TheGUI::on_first_idle()
{
std::cout << "starting TheThread." << std::endl;
// start the thread
m_thethread.run();
// it's not yet correct to activate the "notify thread" button because we don't
// know exactly when the thread will have connected to our signal unless we in turn
// let us notify but this is ok for this test example
m_btn->set_sensitive(true);
}
int main(int arg_count, char** args)
{
Glib::thread_init();
Gtk::Main main(arg_count, args);
TheGUI thegui;
main.run(thegui);
}
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