~compiz-team/compiz/0.9.10 : contents of src/eventsource.cpp at revision 3786

~compiz-team/compiz/0.9.10 : (revision 3786)

/*
 * Copyright © 2010 Canonical Ltd.
 *
 * Permission to use, copy, modify, distribute, and sell this software
 * and its documentation for any purpose is hereby granted without
 * fee, provided that the above copyright notice appear in all copies
 * and that both that copyright notice and this permission notice
 * appear in supporting documentation, and that the name of
 * Canonical Ltd. not be used in advertising or publicity pertaining to
 * distribution of the software without specific, written prior permission.
 * Canonical Ltd. makes no representations about the suitability of this
 * software for any purpose. It is provided "as is" without express or
 * implied warranty.
 *
 * CANONICAL, LTD. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
 * NO EVENT SHALL CANONICAL, LTD. BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
 * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 * Authored by: Jason Smith <jason.smith@canonical.com>
 * 	      : Sam Spilsbury <sam.spilsbury@canonical.com>
 */

#include "privateeventsource.h"
#include "core/screen.h"

Glib::RefPtr<CompEventSource>
CompEventSource::create ()
{
    return Glib::RefPtr<CompEventSource> (new CompEventSource (screen->dpy (), ConnectionNumber (screen->dpy ())));
}

sigc::connection
CompEventSource::connect (const sigc::slot <bool> &slot)
{
    return connect_generic (slot);
}

CompEventSource::CompEventSource (Display *dpy, int fd) :
    Glib::Source (),
    mDpy (dpy),
    mConnectionFD (fd)
{
    mPollFD.set_fd (mConnectionFD);
    mPollFD.set_events (Glib::IO_IN);

    set_priority (G_PRIORITY_DEFAULT);
    add_poll (mPollFD);
    set_can_recurse (true);

    connect (sigc::mem_fun <bool, CompEventSource> (this, &CompEventSource::callback));
}

CompEventSource::~CompEventSource ()
{
}

bool
CompEventSource::callback ()
{
    screen->processEvents ();
    return true;
}

bool
CompEventSource::prepare (int &timeout)
{
    timeout = -1;
    return XPending (mDpy);
}

bool
CompEventSource::check ()
{
    if (mPollFD.get_revents () & Glib::IO_IN)
	return XPending (mDpy);

    return false;
}

bool
CompEventSource::dispatch (sigc::slot_base *slot)
{
    return (*static_cast <sigc::slot <bool> *> (slot)) ();
}

2665.2.25 by Sam Spilsbury Move sources around into relevant files	1	/*
2677 by Sam Spilsbury Relicence eventsource.cpp to MIT	2	* Copyright © 2010 Canonical Ltd.
	3	*
	4	* Permission to use, copy, modify, distribute, and sell this software
	5	* and its documentation for any purpose is hereby granted without
	6	* fee, provided that the above copyright notice appear in all copies
	7	* and that both that copyright notice and this permission notice
	8	* appear in supporting documentation, and that the name of
2679 by Sam Spilsbury s/Novell Inc./Canonical Ltd./ in eventsource.cpp copyright	9	* Canonical Ltd. not be used in advertising or publicity pertaining to
2677 by Sam Spilsbury Relicence eventsource.cpp to MIT	10	* distribution of the software without specific, written prior permission.
2679 by Sam Spilsbury s/Novell Inc./Canonical Ltd./ in eventsource.cpp copyright	11	* Canonical Ltd. makes no representations about the suitability of this
2677 by Sam Spilsbury Relicence eventsource.cpp to MIT	12	* software for any purpose. It is provided "as is" without express or
	13	* implied warranty.
	14	*
	15	* CANONICAL, LTD. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
	16	* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
	17	* NO EVENT SHALL CANONICAL, LTD. BE LIABLE FOR ANY SPECIAL, INDIRECT OR
	18	* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
	19	* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
	20	* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
	21	* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
2665.2.25 by Sam Spilsbury Move sources around into relevant files	22	*
	23	* Authored by: Jason Smith <jason.smith@canonical.com>
	24	* : Sam Spilsbury <sam.spilsbury@canonical.com>
	25	*/
	26
3132.1.8 by Alan Griffiths Remove unnecessary includes of privatescreen.h	27	#include "privateeventsource.h"
	28	#include "core/screen.h"
2665.2.25 by Sam Spilsbury Move sources around into relevant files	29
3778.1.1 by Andrea Azzarone Use Glib::RefPtr<Glib::Source> in glib_integration_test and compiz core too. After the fix of bug https://bugzilla.gnome.org/show_bug.cgi?id=561885 Glib::Source::~Source is called when both Source::unreference() and SourceCallbackData::destroy_notify_callback() are called.	30	Glib::RefPtr<CompEventSource>
2665.2.25 by Sam Spilsbury Move sources around into relevant files	31	CompEventSource::create ()
	32	{
3778.1.1 by Andrea Azzarone Use Glib::RefPtr<Glib::Source> in glib_integration_test and compiz core too. After the fix of bug https://bugzilla.gnome.org/show_bug.cgi?id=561885 Glib::Source::~Source is called when both Source::unreference() and SourceCallbackData::destroy_notify_callback() are called.	33	return Glib::RefPtr<CompEventSource> (new CompEventSource (screen->dpy (), ConnectionNumber (screen->dpy ())));
2665.2.25 by Sam Spilsbury Move sources around into relevant files	34	}
	35
	36	sigc::connection
	37	CompEventSource::connect (const sigc::slot <bool> &slot)
	38	{
	39	return connect_generic (slot);
	40	}
	41
3494.2.1 by Sam Spilsbury In order to safely destroy a Glib::Source you need to g_source_destroy its underlying gobj ()	42	CompEventSource::CompEventSource (Display *dpy, int fd) :
2665.2.25 by Sam Spilsbury Move sources around into relevant files	43	Glib::Source (),
3494.2.1 by Sam Spilsbury In order to safely destroy a Glib::Source you need to g_source_destroy its underlying gobj ()	44	mDpy (dpy),
3494.2.5 by Sam Spilsbury We already have the connnection number use the provided fd	45	mConnectionFD (fd)
2665.2.25 by Sam Spilsbury Move sources around into relevant files	46	{
	47	mPollFD.set_fd (mConnectionFD);
	48	mPollFD.set_events (Glib::IO_IN);
	49
	50	set_priority (G_PRIORITY_DEFAULT);
	51	add_poll (mPollFD);
	52	set_can_recurse (true);
	53
	54	connect (sigc::mem_fun <bool, CompEventSource> (this, &CompEventSource::callback));
	55	}
	56
	57	CompEventSource::~CompEventSource ()
	58	{
	59	}
	60
	61	bool
	62	CompEventSource::callback ()
	63	{
2961.6.31 by Alan Griffiths Remove a friend at the cost of a forwarding function	64	screen->processEvents ();
2665.2.25 by Sam Spilsbury Move sources around into relevant files	65	return true;
	66	}
	67
	68	bool
	69	CompEventSource::prepare (int &timeout)
	70	{
	71	timeout = -1;
	72	return XPending (mDpy);
	73	}
	74
	75	bool
	76	CompEventSource::check ()
	77	{
	78	if (mPollFD.get_revents () & Glib::IO_IN)
	79	return XPending (mDpy);
	80
	81	return false;
	82	}
	83
	84	bool
	85	CompEventSource::dispatch (sigc::slot_base *slot)
	86	{
	87	return (static_cast <sigc::slot <bool> > (slot)) ();
	88	}