1 files changed, 324 insertions, 0 deletions
diff --git a/kmilo/generic/generic_monitor.cpp b/kmilo/generic/generic_monitor.cpp
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+// -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: t; tab-width: 2; -*-
+/*
+   This file is part of the KDE project
+
+   Copyright (c) 2003 Willi Richert <w.richert@gmx.net>
+   Pretty much ripped off from :
+	 George Staikos <staikos@kde.org> :)
+
+   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; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.
+
+*/
+
+#include <kgenericfactory.h>
+#include <kdebug.h>
+#include <kconfig.h>
+
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "generic_monitor.h"
+#include "kmilointerface.h"
+#include <qmessagebox.h>
+#include <qfile.h>
+
+#define CONFIG_FILE "kmilodrc"
+
+
+using namespace KMilo;
+
+GenericMonitor::GenericMonitor(QObject *parent, const char *name, const QStringList& args)
+: Monitor(parent, name, args)
+{
+	_poll = false;
+	m_displayType = Monitor::None;
+
+	m_mute = false;
+	m_progress = 0;
+	m_minVolume = 0;
+	m_maxVolume = 100;
+	m_volume = 50;
+}
+
+GenericMonitor::~GenericMonitor()
+{
+	if(ga) {
+		ga->remove("FastVolumeUp");
+		ga->remove("FastVolumeDown");
+		ga->remove("SlowVolumeUp");
+		ga->remove("SlowVolumeDown");
+		ga->remove("Mute");
+		delete ga;
+	}
+}
+
+bool GenericMonitor::init()
+{
+	KConfig config(CONFIG_FILE);
+	reconfigure(&config);
+
+	if(!m_enabled)
+		return false; // exit early if we are not supposed to run
+
+	static const ShortcutInfo shortcuts[] = {
+		{ "FastVolumeUp", Qt::Key_VolumeUp, SLOT(fastVolumeUp()) },
+		{ "FastVolumeDown", Qt::Key_VolumeDown, SLOT(fastVolumeDown()) },
+		{ "SlowVolumeUp", Qt::CTRL+Qt::Key_VolumeUp, SLOT(slowVolumeUp()) },
+		{ "SlowVolumeDown", Qt::CTRL+Qt::Key_VolumeDown, SLOT(slowVolumeDown()) },
+		{ "Mute", KShortcut("XF86AudioMute"), SLOT(mute()) }
+	};
+
+	ga = new KGlobalAccel(this, "miloGenericAccel");
+
+	ShortcutInfo si;
+	int len = (int)sizeof(shortcuts)/sizeof(ShortcutInfo);
+	for (int i = 0; i < len; i++) {
+		si = shortcuts[i];
+
+		ga->insert(si.name, QString::null, QString::null,
+							 si.symbol, si.symbol,
+							 this,
+							 si.slot, false);
+	}
+
+	ga->readSettings();
+	ga->updateConnections();
+
+	kmixClient = new DCOPRef("kmix", "Mixer0");
+	kmixWindow = new DCOPRef("kmix", "kmix-mainwindow#1");
+
+	return true;
+}
+
+void GenericMonitor::reconfigure(KConfig *config)
+{
+	config->setGroup("generic monitor");
+
+	m_volumeDeviceIdx = config->readNumEntry("volumeDeviceIdx", -1);
+	m_muteDeviceIdx = config->readNumEntry("muteDeviceIdx", m_volumeDeviceIdx);
+	m_extraDeviceIdx = config->readNumEntry("extraDeviceIdx", -1);
+	m_volumeStepFast = config->readNumEntry("volumeStepFast", 10);
+	m_volumeStepSlow = config->readNumEntry("volumeStepSlow", 1);
+	m_enabled = config->readBoolEntry("enabled", true);
+}
+
+bool GenericMonitor::retrieveKmixDevices()
+{
+	if(m_volumeDeviceIdx != -1 && m_muteDeviceIdx != -1)
+		return true; // both indexes already set
+
+	DCOPReply reply = kmixClient->call("masterDeviceIndex");
+	if (!reply.isValid())
+	{ // maybe the error occurred because kmix wasn't running
+		_interface->displayText(i18n("Starting KMix..."));
+		if (kapp->startServiceByDesktopName("kmix")==0) // trying to start kmix
+		{
+			reply = kmixClient->call("masterDeviceIndex");
+			if (reply.isValid())
+				kmixWindow->send("hide");
+		}
+	}
+		
+	if (!reply.isValid())
+	{
+		kdDebug() << "KMilo: GenericMonitor could not access kmix/Mixer0 via dcop" 
+							<< endl;
+		_interface->displayText(i18n("It seems that KMix is not running."));
+		
+		return false;
+	} else {
+		if (m_volumeDeviceIdx == -1)
+			m_volumeDeviceIdx = reply;
+		if (m_muteDeviceIdx == -1)
+			m_muteDeviceIdx = m_volumeDeviceIdx; // this is the behaviour documented in README
+		return true;
+	}
+}
+
+bool GenericMonitor::retrieveVolume() 
+{
+	bool kmix_error = false;
+
+	if(!retrieveKmixDevices())
+		return false;
+
+	DCOPReply reply = kmixClient->call("absoluteVolume", m_volumeDeviceIdx);
+	if (reply.isValid())
+		m_volume = reply;
+	else
+		kmix_error = true;
+
+	if (kmix_error) // maybe the error occurred because kmix wasn't running
+	{
+		_interface->displayText(i18n("Starting KMix..."));
+		if (kapp->startServiceByDesktopName("kmix")==0) // trying to start kmix
+		{
+			// trying again
+			reply = kmixClient->call("absoluteVolume", m_volumeDeviceIdx);
+			if (reply.isValid()) 
+			{
+				m_volume = reply;
+				kmix_error = false;
+				kmixWindow->send("hide");
+			}
+		}
+	}
+		
+	if (kmix_error)
+	{
+		kdDebug() << "KMilo: GenericMonitor could not access kmix/Mixer0 via dcop" 
+							<< endl;
+		_interface->displayText(i18n("It seems that KMix is not running."));
+		
+		return false;
+	} else {
+		reply = kmixClient->call("absoluteVolumeMax", m_volumeDeviceIdx);
+		m_maxVolume = reply;
+		reply = kmixClient->call("absoluteVolumeMin", m_volumeDeviceIdx);
+		m_minVolume = reply;
+		return true;
+	}
+}
+
+void GenericMonitor::volumeChange(int direction, int step)
+{
+	if (!retrieveVolume())
+		return;
+
+	/* Following snippet of code may seem to be overcomplicated, but it works for both devices with
+	 * volume grain < 100 (32 tested) and devices with volume grain > 100 (256 tested) while preserving
+	 * accuracy for devices with fine grain and preserving usability for devices with rough grain. */
+	int userVisibleVolume = qRound(m_volume * 100.0 / (m_maxVolume - m_minVolume));
+	userVisibleVolume += direction * step; // add requested volume step
+	long previousVolume = m_volume;
+	m_volume = qRound(m_minVolume + userVisibleVolume * (m_maxVolume - m_minVolume) / 100.0);
+	if (m_volume == previousVolume) // if the change was rounded to zero
+		m_volume += direction;
+
+	if (m_volume > m_maxVolume)
+		m_volume = m_maxVolume;
+	if (m_volume < m_minVolume)
+		m_volume = m_minVolume;
+
+	displayVolume();
+}
+
+void GenericMonitor::slowVolumeUp()   { volumeChange( 1, m_volumeStepSlow); }
+void GenericMonitor::slowVolumeDown() { volumeChange(-1, m_volumeStepSlow); }
+void GenericMonitor::fastVolumeUp()   { volumeChange( 1, m_volumeStepFast); }
+void GenericMonitor::fastVolumeDown() { volumeChange(-1, m_volumeStepFast); }
+
+void GenericMonitor::displayVolume()
+{
+	_interface->displayProgress(i18n("Volume"), qRound(m_volume * 100.0 / (m_maxVolume - m_minVolume)));
+
+	// If we got this far, the DCOP communication with kmix works,
+	// so we don't have to test the result.
+	// Also, device indexes are set to their proper values.
+	kmixClient->send("setAbsoluteVolume", m_volumeDeviceIdx, m_volume);
+	if(m_extraDeviceIdx != -1)
+		// for simplicity, use relative volume rather that absolute (extra precision is not needed here)
+		kmixClient->send("setVolume", m_extraDeviceIdx, qRound(m_volume * 100.0 / (m_maxVolume - m_minVolume)));
+
+	// if mute then unmute
+	if (m_mute)
+	{
+		m_mute = false;
+		kmixClient->send("setMute", m_muteDeviceIdx, m_mute);
+	}
+}
+
+bool GenericMonitor::retrieveMute() 
+{
+	bool kmix_error = false;
+
+	if(!retrieveKmixDevices())
+		return false;
+
+	DCOPReply reply = kmixClient->call("mute", m_muteDeviceIdx);
+	if (reply.isValid())
+		m_mute = reply;
+	else
+		kmix_error = true;
+
+	if (kmix_error)
+	{
+		// maybe the error occurred because kmix wasn't running
+		_interface->displayText(i18n("Starting KMix..."));
+		if (kapp->startServiceByDesktopName("kmix")==0) // trying to start kmix
+		{
+			// trying again
+			reply = kmixClient->call("mute", m_muteDeviceIdx);
+			if (reply.isValid()) 
+			{
+				m_mute = reply;
+				kmix_error = false;
+				kmixWindow->send("hide");
+			}
+		}	else 
+		{
+			kmixWindow->send("hide");
+			kmix_error = true;
+		}
+	}
+
+	if (kmix_error)
+	{
+		kdDebug() << "KMilo: GenericMonitor could not access kmix/Mixer0 via dcop" 
+							<< endl;
+		_interface->displayText(i18n("It seems that KMix is not running."));
+		
+		return false;
+	} else {
+		return true;
+	}
+}
+
+void GenericMonitor::mute() 
+{
+	if (!retrieveMute())
+		return;
+
+	m_mute = !m_mute;
+	QString muteText;
+	if (m_mute)
+	{
+		muteText = i18n("Mute on");
+	} else {
+		muteText = i18n("Mute off");
+	}
+
+	kmixClient->send("setMute", m_muteDeviceIdx, m_mute);
+	if(m_extraDeviceIdx != -1)
+		kmixClient->send("setMute", m_extraDeviceIdx, m_mute);
+
+	_interface->displayText(muteText);
+}
+
+int GenericMonitor::progress() const 
+{
+	return m_progress;
+}
+
+Monitor::DisplayType GenericMonitor::poll() 
+{
+	return m_displayType;
+}
+
+
+K_EXPORT_COMPONENT_FACTORY(kmilo_generic, KGenericFactory<GenericMonitor>("kmilo_generic"))
+
+#include "generic_monitor.moc"